Add directshow strmbase library source code from Microsoft repo

Original repo is here:
https://github.com/microsoft/Windows-classic-samples

Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/1577>

subprojects/gst-plugins-bad/meson_options.txt

@@ -99,6 +99,7 @@ option('dc1394', type : 'feature', value : 'auto', description : 'libdc1394 IIDC
 option('decklink', type : 'feature', value : 'auto', description : 'DeckLink audio/video source/sink plugin')
 option('directfb', type : 'feature', value : 'auto', description : 'DirectFB video sink plugin')
 option('directsound', type : 'feature', value : 'auto', description : 'Directsound audio source plugin')
+option('directshow', type : 'feature', value : 'auto', description : 'Directshow audio/video plugins')
 option('dtls', type : 'feature', value : 'auto', description : 'DTLS encoder and decoder plugin')
 option('dts', type : 'feature', value : 'auto', description : 'DTS audio decoder plugin (GPL - only built if gpl option is also enabled!)')
 option('dvb', type : 'feature', value : 'auto', description : 'DVB video bin and source plugin')

subprojects/gst-plugins-bad/sys/directshow/meson.build

@@ -0,0 +1,26 @@
+if host_system == 'windows'
+  # Check whether we're building for UWP apps
+  code = '''
+  #include <windows.h>
+  #if !(WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP) && !WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP))
+  #error "Not building for UWP"
+  #endif'''
+  if cc.compiles(code, name : 'building for UWP')
+    if get_option('directshow').enabled()
+      error('directshow plugins cannot be built for UWP')
+    endif
+    subdir_done()
+  endif
+endif
+
+if cxx.get_id() != 'msvc' or get_option('directshow').disabled()
+  if get_option('directshow').enabled()
+    error('directshow plugins can only be built with MSVC')
+  endif
+  subdir_done()
+endif
+
+subdir('strmbase')
+#subdir('dshowdecwrapper')
+#subdir('dshowsrcwrapper')
+#subdir('dshowvideosink')

subprojects/gst-plugins-bad/sys/directshow/strmbase/LICENSE

@@ -0,0 +1,24 @@
+The MIT License (MIT)
+
+Copyright (c) Microsoft Corporation
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ THE SOFTWARE.
+
+Portions of this repo are provided under the SIL Open Font License.
+See the LICENSE file in individual samples for additional details.

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/amextra.cpp

@@ -0,0 +1,111 @@
+//------------------------------------------------------------------------------
+// File: AMExtra.cpp
+//
+// Desc: DirectShow base classes - implements CRenderedInputPin class.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>        // DirectShow base class definitions
+#include <mmsystem.h>       // Needed for definition of timeGetTime
+#include <limits.h>         // Standard data type limit definitions
+#include <measure.h>        // Used for time critical log functions
+
+#include "amextra.h"
+
+#pragma warning(disable:4355)
+
+//  Implements CRenderedInputPin class
+
+CRenderedInputPin::CRenderedInputPin(__in_opt LPCTSTR pObjectName,
+                                     __in CBaseFilter *pFilter,
+                                     __in CCritSec *pLock,
+                                     __inout HRESULT *phr,
+                                     __in_opt LPCWSTR pName) :
+    CBaseInputPin(pObjectName, pFilter, pLock, phr, pName),
+    m_bAtEndOfStream(FALSE),
+    m_bCompleteNotified(FALSE)
+{
+}
+#ifdef UNICODE
+CRenderedInputPin::CRenderedInputPin(__in_opt LPCSTR pObjectName,
+                                     __in CBaseFilter *pFilter,
+                                     __in CCritSec *pLock,
+                                     __inout HRESULT *phr,
+                                     __in_opt LPCWSTR pName) :
+    CBaseInputPin(pObjectName, pFilter, pLock, phr, pName),
+    m_bAtEndOfStream(FALSE),
+    m_bCompleteNotified(FALSE)
+{
+}
+#endif
+
+// Flush end of stream condition - caller should do any
+// necessary stream level locking before calling this
+
+STDMETHODIMP CRenderedInputPin::EndOfStream()
+{
+    HRESULT hr = CheckStreaming();
+
+    //  Do EC_COMPLETE handling for rendered pins
+    if (S_OK == hr  && !m_bAtEndOfStream) {
+        m_bAtEndOfStream = TRUE;
+        FILTER_STATE fs;
+        EXECUTE_ASSERT(SUCCEEDED(m_pFilter->GetState(0, &fs)));
+        if (fs == State_Running) {
+            DoCompleteHandling();
+        }
+    }
+    return hr;
+}
+
+
+// Called to complete the flush
+
+STDMETHODIMP CRenderedInputPin::EndFlush()
+{
+    CAutoLock lck(m_pLock);
+
+    // Clean up renderer state
+    m_bAtEndOfStream = FALSE;
+    m_bCompleteNotified = FALSE;
+
+    return CBaseInputPin::EndFlush();
+}
+
+
+// Notify of Run() from filter
+
+HRESULT CRenderedInputPin::Run(REFERENCE_TIME tStart)
+{
+    UNREFERENCED_PARAMETER(tStart);
+    m_bCompleteNotified = FALSE;
+    if (m_bAtEndOfStream) {
+        DoCompleteHandling();
+    }
+    return S_OK;
+}
+
+
+//  Clear status on going into paused state
+
+HRESULT CRenderedInputPin::Active()
+{
+    m_bAtEndOfStream = FALSE;
+    m_bCompleteNotified = FALSE;
+    return CBaseInputPin::Active();
+}
+
+
+//  Do stuff to deliver end of stream
+
+void CRenderedInputPin::DoCompleteHandling()
+{
+    ASSERT(m_bAtEndOfStream);
+    if (!m_bCompleteNotified) {
+        m_bCompleteNotified = TRUE;
+        m_pFilter->NotifyEvent(EC_COMPLETE, S_OK, (LONG_PTR)(IBaseFilter *)m_pFilter);
+    }
+}
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/amextra.h

@@ -0,0 +1,56 @@
+//------------------------------------------------------------------------------
+// File: AMExtra.h
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __AMEXTRA__
+#define __AMEXTRA__
+
+// Simple rendered input pin
+//
+// NOTE if your filter queues stuff before rendering then it may not be
+// appropriate to use this class
+//
+// In that case queue the end of stream condition until the last sample
+// is actually rendered and flush the condition appropriately
+
+class CRenderedInputPin : public CBaseInputPin
+{
+public:
+
+    CRenderedInputPin(__in_opt LPCTSTR pObjectName,
+                      __in CBaseFilter *pFilter,
+                      __in CCritSec *pLock,
+                      __inout HRESULT *phr,
+                      __in_opt LPCWSTR pName);
+#ifdef UNICODE
+    CRenderedInputPin(__in_opt LPCSTR pObjectName,
+                      __in CBaseFilter *pFilter,
+                      __in CCritSec *pLock,
+                      __inout HRESULT *phr,
+                      __in_opt LPCWSTR pName);
+#endif
+    
+    // Override methods to track end of stream state
+    STDMETHODIMP EndOfStream();
+    STDMETHODIMP EndFlush();
+
+    HRESULT Active();
+    HRESULT Run(REFERENCE_TIME tStart);
+
+protected:
+
+    // Member variables to track state
+    BOOL m_bAtEndOfStream;      // Set by EndOfStream
+    BOOL m_bCompleteNotified;   // Set when we notify for EC_COMPLETE
+
+private:
+    void DoCompleteHandling();
+};
+
+#endif // __AMEXTRA__
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/amvideo.cpp

@@ -0,0 +1,275 @@
+//------------------------------------------------------------------------------
+// File: AMVideo.cpp
+//
+// Desc: DirectShow base classes - implements helper functions for
+//       bitmap formats.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#include <limits.h>
+
+// These are bit field masks for true colour devices
+
+const DWORD bits555[] = {0x007C00,0x0003E0,0x00001F};
+const DWORD bits565[] = {0x00F800,0x0007E0,0x00001F};
+const DWORD bits888[] = {0xFF0000,0x00FF00,0x0000FF};
+
+// This maps bitmap subtypes into a bits per pixel value and also a
+// name. unicode and ansi versions are stored because we have to
+// return a pointer to a static string.
+const struct {
+    const GUID *pSubtype;
+    WORD BitCount;
+    CHAR *pName;
+    WCHAR *wszName;
+} BitCountMap[] =  { &MEDIASUBTYPE_RGB1,        1,   "RGB Monochrome",     L"RGB Monochrome",   
+                     &MEDIASUBTYPE_RGB4,        4,   "RGB VGA",            L"RGB VGA",          
+                     &MEDIASUBTYPE_RGB8,        8,   "RGB 8",              L"RGB 8",            
+                     &MEDIASUBTYPE_RGB565,      16,  "RGB 565 (16 bit)",   L"RGB 565 (16 bit)", 
+                     &MEDIASUBTYPE_RGB555,      16,  "RGB 555 (16 bit)",   L"RGB 555 (16 bit)", 
+                     &MEDIASUBTYPE_RGB24,       24,  "RGB 24",             L"RGB 24",           
+                     &MEDIASUBTYPE_RGB32,       32,  "RGB 32",             L"RGB 32",
+                     &MEDIASUBTYPE_ARGB32,    32,  "ARGB 32",             L"ARGB 32",
+                     &MEDIASUBTYPE_Overlay,     0,   "Overlay",            L"Overlay",          
+                     &GUID_NULL,                0,   "UNKNOWN",            L"UNKNOWN"           
+};
+
+// Return the size of the bitmap as defined by this header
+
+STDAPI_(DWORD) GetBitmapSize(const BITMAPINFOHEADER *pHeader)
+{
+    return DIBSIZE(*pHeader);
+}
+
+
+// This is called if the header has a 16 bit colour depth and needs to work
+// out the detailed type from the bit fields (either RGB 565 or RGB 555)
+
+STDAPI_(const GUID) GetTrueColorType(const BITMAPINFOHEADER *pbmiHeader)
+{
+    BITMAPINFO *pbmInfo = (BITMAPINFO *) pbmiHeader;
+    ASSERT(pbmiHeader->biBitCount == 16);
+
+    // If its BI_RGB then it's RGB 555 by default
+
+    if (pbmiHeader->biCompression == BI_RGB) {
+        return MEDIASUBTYPE_RGB555;
+    }
+
+    // Compare the bit fields with RGB 555
+
+    DWORD *pMask = (DWORD *) pbmInfo->bmiColors;
+    if (pMask[0] == bits555[0]) {
+        if (pMask[1] == bits555[1]) {
+            if (pMask[2] == bits555[2]) {
+                return MEDIASUBTYPE_RGB555;
+            }
+        }
+    }
+
+    // Compare the bit fields with RGB 565
+
+    pMask = (DWORD *) pbmInfo->bmiColors;
+    if (pMask[0] == bits565[0]) {
+        if (pMask[1] == bits565[1]) {
+            if (pMask[2] == bits565[2]) {
+                return MEDIASUBTYPE_RGB565;
+            }
+        }
+    }
+    return GUID_NULL;
+}
+
+
+// Given a BITMAPINFOHEADER structure this returns the GUID sub type that is
+// used to describe it in format negotiations. For example a video codec fills
+// in the format block with a VIDEOINFO structure, it also fills in the major
+// type with MEDIATYPE_VIDEO and the subtype with a GUID that matches the bit
+// count, for example if it is an eight bit image then MEDIASUBTYPE_RGB8
+
+STDAPI_(const GUID) GetBitmapSubtype(const BITMAPINFOHEADER *pbmiHeader)
+{
+    ASSERT(pbmiHeader);
+
+    // If it's not RGB then create a GUID from the compression type
+
+    if (pbmiHeader->biCompression != BI_RGB) {
+        if (pbmiHeader->biCompression != BI_BITFIELDS) {
+            FOURCCMap FourCCMap(pbmiHeader->biCompression);
+            return (const GUID) FourCCMap;
+        }
+    }
+
+    // Map the RGB DIB bit depth to a image GUID
+
+    switch(pbmiHeader->biBitCount) {
+        case 1    :   return MEDIASUBTYPE_RGB1;
+        case 4    :   return MEDIASUBTYPE_RGB4;
+        case 8    :   return MEDIASUBTYPE_RGB8;
+        case 16   :   return GetTrueColorType(pbmiHeader);
+        case 24   :   return MEDIASUBTYPE_RGB24;
+        case 32   :   return MEDIASUBTYPE_RGB32;
+    }
+    return GUID_NULL;
+}
+
+
+// Given a video bitmap subtype we return the number of bits per pixel it uses
+// We return a WORD bit count as thats what the BITMAPINFOHEADER uses. If the
+// GUID subtype is not found in the table we return an invalid USHRT_MAX
+
+STDAPI_(WORD) GetBitCount(const GUID *pSubtype)
+{
+    ASSERT(pSubtype);
+    const GUID *pMediaSubtype;
+    INT iPosition = 0;
+
+    // Scan the mapping list seeing if the source GUID matches any known
+    // bitmap subtypes, the list is terminated by a GUID_NULL entry
+
+    while (TRUE) {
+        pMediaSubtype = BitCountMap[iPosition].pSubtype;
+        if (IsEqualGUID(*pMediaSubtype,GUID_NULL)) {
+            return USHRT_MAX;
+        }
+        if (IsEqualGUID(*pMediaSubtype,*pSubtype)) {
+            return BitCountMap[iPosition].BitCount;
+        }
+        iPosition++;
+    }
+}
+
+
+// Given a bitmap subtype we return a description name that can be used for
+// debug purposes. In a retail build this function still returns the names
+// If the subtype isn't found in the lookup table we return string UNKNOWN
+
+int LocateSubtype(const GUID *pSubtype)
+{
+    ASSERT(pSubtype);
+    const GUID *pMediaSubtype;
+    INT iPosition = 0;
+
+    // Scan the mapping list seeing if the source GUID matches any known
+    // bitmap subtypes, the list is terminated by a GUID_NULL entry
+
+    while (TRUE) {
+        pMediaSubtype = BitCountMap[iPosition].pSubtype;
+        if (IsEqualGUID(*pMediaSubtype,*pSubtype) ||
+            IsEqualGUID(*pMediaSubtype,GUID_NULL)
+            )
+        {
+            break;
+        }
+        
+        iPosition++;
+    }
+
+    return iPosition;
+}
+
+
+
+STDAPI_(WCHAR *) GetSubtypeNameW(const GUID *pSubtype)
+{
+    return BitCountMap[LocateSubtype(pSubtype)].wszName;
+}
+
+STDAPI_(CHAR *) GetSubtypeNameA(const GUID *pSubtype)
+{
+    return BitCountMap[LocateSubtype(pSubtype)].pName;
+}
+
+#ifndef GetSubtypeName
+#error wxutil.h should have defined GetSubtypeName
+#endif
+#undef GetSubtypeName
+
+// this is here for people that linked to it directly; most people
+// would use the header file that picks the A or W version.
+STDAPI_(CHAR *) GetSubtypeName(const GUID *pSubtype)
+{
+    return GetSubtypeNameA(pSubtype);
+}
+
+
+// The mechanism for describing a bitmap format is with the BITMAPINFOHEADER
+// This is really messy to deal with because it invariably has fields that
+// follow it holding bit fields, palettes and the rest. This function gives
+// the number of bytes required to hold a VIDEOINFO that represents it. This
+// count includes the prefix information (like the rcSource rectangle) the
+// BITMAPINFOHEADER field, and any other colour information on the end.
+//
+// WARNING If you want to copy a BITMAPINFOHEADER into a VIDEOINFO always make
+// sure that you use the HEADER macro because the BITMAPINFOHEADER field isn't
+// right at the start of the VIDEOINFO (there are a number of other fields),
+//
+//     CopyMemory(HEADER(pVideoInfo),pbmi,sizeof(BITMAPINFOHEADER));
+//
+
+STDAPI_(LONG) GetBitmapFormatSize(const BITMAPINFOHEADER *pHeader)
+{
+    // Everyone has this to start with this  
+    LONG Size = SIZE_PREHEADER + pHeader->biSize;
+
+    ASSERT(pHeader->biSize >= sizeof(BITMAPINFOHEADER));
+    
+    // Does this format use a palette, if the number of colours actually used
+    // is zero then it is set to the maximum that are allowed for that colour
+    // depth (an example is 256 for eight bits). Truecolour formats may also
+    // pass a palette with them in which case the used count is non zero
+
+    // This would scare me.
+    ASSERT(pHeader->biBitCount <= iPALETTE || pHeader->biClrUsed == 0);
+
+    if (pHeader->biBitCount <= iPALETTE || pHeader->biClrUsed) {
+        LONG Entries = (DWORD) 1 << pHeader->biBitCount;
+        if (pHeader->biClrUsed) {
+            Entries = pHeader->biClrUsed;
+        }
+        Size += Entries * sizeof(RGBQUAD);
+    }
+
+    // Truecolour formats may have a BI_BITFIELDS specifier for compression
+    // type which means that room for three DWORDs should be allocated that
+    // specify where in each pixel the RGB colour components may be found
+
+    if (pHeader->biCompression == BI_BITFIELDS) {
+        Size += SIZE_MASKS;
+    }
+
+    // A BITMAPINFO for a palettised image may also contain a palette map that
+    // provides the information to map from a source palette to a destination
+    // palette during a BitBlt for example, because this information is only
+    // ever processed during drawing you don't normally store the palette map
+    // nor have any way of knowing if it is present in the data structure
+
+    return Size;
+}
+
+
+// Returns TRUE if the VIDEOINFO contains a palette
+
+STDAPI_(BOOL) ContainsPalette(const VIDEOINFOHEADER *pVideoInfo)
+{
+    if (PALETTISED(pVideoInfo) == FALSE) {
+        if (pVideoInfo->bmiHeader.biClrUsed == 0) {
+            return FALSE;
+        }
+    }
+    return TRUE;
+}
+
+
+// Return a pointer to the first entry in a palette
+
+STDAPI_(const RGBQUAD *) GetBitmapPalette(const VIDEOINFOHEADER *pVideoInfo)
+{
+    if (pVideoInfo->bmiHeader.biCompression == BI_BITFIELDS) {
+        return TRUECOLOR(pVideoInfo)->bmiColors;
+    }
+    return COLORS(pVideoInfo);
+}

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/arithutil.cpp

@@ -0,0 +1,360 @@
+//------------------------------------------------------------------------------
+// File: ArithUtil.cpp
+//
+// Desc: DirectShow base classes - implements helper classes for building
+//       multimedia filters.
+//
+// Copyright (c) 1992-2004 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+#include <streams.h>
+
+//
+//  Declare function from largeint.h we need so that PPC can build
+//
+
+//
+// Enlarged integer divide - 64-bits / 32-bits > 32-bits
+//
+
+#ifndef _X86_
+
+#define LLtoU64(x) (*(unsigned __int64*)(void*)(&(x)))
+
+__inline
+ULONG
+WINAPI
+EnlargedUnsignedDivide (
+    IN ULARGE_INTEGER Dividend,
+    IN ULONG Divisor,
+    IN PULONG Remainder
+    )
+{
+        // return remainder if necessary
+        if (Remainder != NULL)
+                *Remainder = (ULONG)(LLtoU64(Dividend) % Divisor);
+        return (ULONG)(LLtoU64(Dividend) / Divisor);
+}
+
+#else
+__inline
+ULONG
+WINAPI
+EnlargedUnsignedDivide (
+    IN ULARGE_INTEGER Dividend,
+    IN ULONG Divisor,
+    IN PULONG Remainder
+    )
+{
+    ULONG ulResult;
+    _asm {
+        mov eax,Dividend.LowPart
+        mov edx,Dividend.HighPart
+        mov ecx,Remainder
+        div Divisor
+        or  ecx,ecx
+        jz  short label
+        mov [ecx],edx
+label:
+        mov ulResult,eax
+    }
+    return ulResult;
+}
+#endif
+
+
+/*  Arithmetic functions to help with time format conversions
+*/
+
+#ifdef _M_ALPHA
+// work around bug in version 12.00.8385 of the alpha compiler where
+// UInt32x32To64 sign-extends its arguments (?)
+#undef UInt32x32To64
+#define UInt32x32To64(a, b) (((ULONGLONG)((ULONG)(a)) & 0xffffffff) * ((ULONGLONG)((ULONG)(b)) & 0xffffffff))
+#endif
+
+/*   Compute (a * b + d) / c */
+LONGLONG WINAPI llMulDiv(LONGLONG a, LONGLONG b, LONGLONG c, LONGLONG d)
+{
+    /*  Compute the absolute values to avoid signed arithmetic problems */
+    ULARGE_INTEGER ua, ub;
+    DWORDLONG uc;
+
+    ua.QuadPart = (DWORDLONG)(a >= 0 ? a : -a);
+    ub.QuadPart = (DWORDLONG)(b >= 0 ? b : -b);
+    uc          = (DWORDLONG)(c >= 0 ? c : -c);
+    BOOL bSign = (a < 0) ^ (b < 0);
+
+    /*  Do long multiplication */
+    ULARGE_INTEGER p[2];
+    p[0].QuadPart  = UInt32x32To64(ua.LowPart, ub.LowPart);
+
+    /*  This next computation cannot overflow into p[1].HighPart because
+        the max number we can compute here is:
+
+                 (2 ** 32 - 1) * (2 ** 32 - 1) +  // ua.LowPart * ub.LowPart
+    (2 ** 32) *  (2 ** 31) * (2 ** 32 - 1) * 2    // x.LowPart * y.HighPart * 2
+
+    == 2 ** 96 - 2 ** 64 + (2 ** 64 - 2 ** 33 + 1)
+    == 2 ** 96 - 2 ** 33 + 1
+    < 2 ** 96
+    */
+
+    ULARGE_INTEGER x;
+    x.QuadPart     = UInt32x32To64(ua.LowPart, ub.HighPart) +
+                     UInt32x32To64(ua.HighPart, ub.LowPart) +
+                     p[0].HighPart;
+    p[0].HighPart  = x.LowPart;
+    p[1].QuadPart  = UInt32x32To64(ua.HighPart, ub.HighPart) + x.HighPart;
+
+    if (d != 0) {
+        ULARGE_INTEGER ud[2];
+        if (bSign) {
+            ud[0].QuadPart = (DWORDLONG)(-d);
+            if (d > 0) {
+                /*  -d < 0 */
+                ud[1].QuadPart = (DWORDLONG)(LONGLONG)-1;
+            } else {
+                ud[1].QuadPart = (DWORDLONG)0;
+            }
+        } else {
+            ud[0].QuadPart = (DWORDLONG)d;
+            if (d < 0) {
+                ud[1].QuadPart = (DWORDLONG)(LONGLONG)-1;
+            } else {
+                ud[1].QuadPart = (DWORDLONG)0;
+            }
+        }
+        /*  Now do extended addition */
+        ULARGE_INTEGER uliTotal;
+
+        /*  Add ls DWORDs */
+        uliTotal.QuadPart  = (DWORDLONG)ud[0].LowPart + p[0].LowPart;
+        p[0].LowPart       = uliTotal.LowPart;
+
+        /*  Propagate carry */
+        uliTotal.LowPart   = uliTotal.HighPart;
+        uliTotal.HighPart  = 0;
+
+        /*  Add 2nd most ls DWORDs */
+        uliTotal.QuadPart += (DWORDLONG)ud[0].HighPart + p[0].HighPart;
+        p[0].HighPart      = uliTotal.LowPart;
+
+        /*  Propagate carry */
+        uliTotal.LowPart   = uliTotal.HighPart;
+        uliTotal.HighPart  = 0;
+
+        /*  Add MS DWORDLONGs - no carry expected */
+        p[1].QuadPart     += ud[1].QuadPart + uliTotal.QuadPart;
+
+        /*  Now see if we got a sign change from the addition */
+        if ((LONG)p[1].HighPart < 0) {
+            bSign = !bSign;
+
+            /*  Negate the current value (ugh!) */
+            p[0].QuadPart  = ~p[0].QuadPart;
+            p[1].QuadPart  = ~p[1].QuadPart;
+            p[0].QuadPart += 1;
+            p[1].QuadPart += (p[0].QuadPart == 0);
+        }
+    }
+
+    /*  Now for the division */
+    if (c < 0) {
+        bSign = !bSign;
+    }
+
+
+    /*  This will catch c == 0 and overflow */
+    if (uc <= p[1].QuadPart) {
+        return bSign ? (LONGLONG)0x8000000000000000 :
+                       (LONGLONG)0x7FFFFFFFFFFFFFFF;
+    }
+
+    DWORDLONG ullResult;
+
+    /*  Do the division */
+    /*  If the dividend is a DWORD_LONG use the compiler */
+    if (p[1].QuadPart == 0) {
+        ullResult = p[0].QuadPart / uc;
+        return bSign ? -(LONGLONG)ullResult : (LONGLONG)ullResult;
+    }
+
+    /*  If the divisor is a DWORD then its simpler */
+    ULARGE_INTEGER ulic;
+    ulic.QuadPart = uc;
+    if (ulic.HighPart == 0) {
+        ULARGE_INTEGER uliDividend;
+        ULARGE_INTEGER uliResult;
+        DWORD dwDivisor = (DWORD)uc;
+        // ASSERT(p[1].HighPart == 0 && p[1].LowPart < dwDivisor);
+        uliDividend.HighPart = p[1].LowPart;
+        uliDividend.LowPart = p[0].HighPart;
+#ifndef USE_LARGEINT
+        uliResult.HighPart = (DWORD)(uliDividend.QuadPart / dwDivisor);
+        p[0].HighPart = (DWORD)(uliDividend.QuadPart % dwDivisor);
+        uliResult.LowPart = 0;
+        uliResult.QuadPart = p[0].QuadPart / dwDivisor + uliResult.QuadPart;
+#else
+        /*  NOTE - this routine will take exceptions if
+            the result does not fit in a DWORD
+        */
+        if (uliDividend.QuadPart >= (DWORDLONG)dwDivisor) {
+            uliResult.HighPart = EnlargedUnsignedDivide(
+                                     uliDividend,
+                                     dwDivisor,
+                                     &p[0].HighPart);
+        } else {
+            uliResult.HighPart = 0;
+        }
+        uliResult.LowPart = EnlargedUnsignedDivide(
+                                 p[0],
+                                 dwDivisor,
+                                 NULL);
+#endif
+        return bSign ? -(LONGLONG)uliResult.QuadPart :
+                        (LONGLONG)uliResult.QuadPart;
+    }
+
+
+    ullResult = 0;
+
+    /*  OK - do long division */
+    for (int i = 0; i < 64; i++) {
+        ullResult <<= 1;
+
+        /*  Shift 128 bit p left 1 */
+        p[1].QuadPart <<= 1;
+        if ((p[0].HighPart & 0x80000000) != 0) {
+            p[1].LowPart++;
+        }
+        p[0].QuadPart <<= 1;
+
+        /*  Compare */
+        if (uc <= p[1].QuadPart) {
+            p[1].QuadPart -= uc;
+            ullResult += 1;
+        }
+    }
+
+    return bSign ? - (LONGLONG)ullResult : (LONGLONG)ullResult;
+}
+
+LONGLONG WINAPI Int64x32Div32(LONGLONG a, LONG b, LONG c, LONG d)
+{
+    ULARGE_INTEGER ua;
+    DWORD ub;
+    DWORD uc;
+
+    /*  Compute the absolute values to avoid signed arithmetic problems */
+    ua.QuadPart = (DWORDLONG)(a >= 0 ? a : -a);
+    ub = (DWORD)(b >= 0 ? b : -b);
+    uc = (DWORD)(c >= 0 ? c : -c);
+    BOOL bSign = (a < 0) ^ (b < 0);
+
+    /*  Do long multiplication */
+    ULARGE_INTEGER p0;
+    DWORD p1;
+    p0.QuadPart  = UInt32x32To64(ua.LowPart, ub);
+
+    if (ua.HighPart != 0) {
+        ULARGE_INTEGER x;
+        x.QuadPart     = UInt32x32To64(ua.HighPart, ub) + p0.HighPart;
+        p0.HighPart  = x.LowPart;
+        p1   = x.HighPart;
+    } else {
+        p1 = 0;
+    }
+
+    if (d != 0) {
+        ULARGE_INTEGER ud0;
+        DWORD ud1;
+
+        if (bSign) {
+            //
+            //  Cast d to LONGLONG first otherwise -0x80000000 sign extends
+            //  incorrectly
+            //
+            ud0.QuadPart = (DWORDLONG)(-(LONGLONG)d);
+            if (d > 0) {
+                /*  -d < 0 */
+                ud1 = (DWORD)-1;
+            } else {
+                ud1 = (DWORD)0;
+            }
+        } else {
+            ud0.QuadPart = (DWORDLONG)d;
+            if (d < 0) {
+                ud1 = (DWORD)-1;
+            } else {
+                ud1 = (DWORD)0;
+            }
+        }
+        /*  Now do extended addition */
+        ULARGE_INTEGER uliTotal;
+
+        /*  Add ls DWORDs */
+        uliTotal.QuadPart  = (DWORDLONG)ud0.LowPart + p0.LowPart;
+        p0.LowPart       = uliTotal.LowPart;
+
+        /*  Propagate carry */
+        uliTotal.LowPart   = uliTotal.HighPart;
+        uliTotal.HighPart  = 0;
+
+        /*  Add 2nd most ls DWORDs */
+        uliTotal.QuadPart += (DWORDLONG)ud0.HighPart + p0.HighPart;
+        p0.HighPart      = uliTotal.LowPart;
+
+        /*  Add MS DWORDLONGs - no carry expected */
+        p1 += ud1 + uliTotal.HighPart;
+
+        /*  Now see if we got a sign change from the addition */
+        if ((LONG)p1 < 0) {
+            bSign = !bSign;
+
+            /*  Negate the current value (ugh!) */
+            p0.QuadPart  = ~p0.QuadPart;
+            p1 = ~p1;
+            p0.QuadPart += 1;
+            p1 += (p0.QuadPart == 0);
+        }
+    }
+
+    /*  Now for the division */
+    if (c < 0) {
+        bSign = !bSign;
+    }
+
+
+    /*  This will catch c == 0 and overflow */
+    if (uc <= p1) {
+        return bSign ? (LONGLONG)0x8000000000000000 :
+                       (LONGLONG)0x7FFFFFFFFFFFFFFF;
+    }
+
+    /*  Do the division */
+
+    /*  If the divisor is a DWORD then its simpler */
+    ULARGE_INTEGER uliDividend;
+    ULARGE_INTEGER uliResult;
+    DWORD dwDivisor = uc;
+    uliDividend.HighPart = p1;
+    uliDividend.LowPart = p0.HighPart;
+    /*  NOTE - this routine will take exceptions if
+        the result does not fit in a DWORD
+    */
+    if (uliDividend.QuadPart >= (DWORDLONG)dwDivisor) {
+        uliResult.HighPart = EnlargedUnsignedDivide(
+                                 uliDividend,
+                                 dwDivisor,
+                                 &p0.HighPart);
+    } else {
+        uliResult.HighPart = 0;
+    }
+    uliResult.LowPart = EnlargedUnsignedDivide(
+                             p0,
+                             dwDivisor,
+                             NULL);
+    return bSign ? -(LONGLONG)uliResult.QuadPart :
+                    (LONGLONG)uliResult.QuadPart;
+}

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/cache.h

@@ -0,0 +1,74 @@
+//------------------------------------------------------------------------------
+// File: Cache.h
+//
+// Desc: DirectShow base classes - efines a non-MFC generic cache class.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+/* This class implements a simple cache. A cache object is instantiated
+   with the number of items it is to hold. An item is a pointer to an
+   object derived from CBaseObject (helps reduce memory leaks). The cache
+   can then have objects added to it and removed from it. The cache size
+   is fixed at construction time and may therefore run out or be flooded.
+   If it runs out it returns a NULL pointer, if it fills up it also returns
+   a NULL pointer instead of a pointer to the object just inserted */
+
+/* Making these classes inherit from CBaseObject does nothing for their
+   functionality but it allows us to check there are no memory leaks */
+
+/* WARNING Be very careful when using this class, what it lets you do is
+   store and retrieve objects so that you can minimise object creation
+   which in turns improves efficiency. However the object you store is
+   exactly the same as the object you get back which means that it short
+   circuits the constructor initialisation phase. This means any class
+   variables the object has (eg pointers) are highly likely to be invalid.
+   Therefore ensure you reinitialise the object before using it again */
+
+
+#ifndef __CACHE__
+#define __CACHE__
+
+
+class CCache : CBaseObject {
+
+    /* Make copy constructor and assignment operator inaccessible */
+
+    CCache(const CCache &refCache);
+    CCache &operator=(const CCache &refCache);
+
+private:
+
+    /* These are initialised in the constructor. The first variable points to
+       an array of pointers, each of which points to a CBaseObject derived
+       object. The m_iCacheSize is the static fixed size for the cache and the
+       m_iUsed defines the number of places filled with objects at any time.
+       We fill the array of pointers from the start (ie m_ppObjects[0] first)
+       and then only add and remove objects from the end position, so in this
+       respect the array of object pointers should be treated as a stack */
+
+    CBaseObject **m_ppObjects;
+    const INT m_iCacheSize;
+    INT m_iUsed;
+
+public:
+
+    CCache(__in_opt LPCTSTR pName,INT iItems);
+    virtual ~CCache();
+
+    /* Add an item to the cache */
+    CBaseObject *AddToCache(__in CBaseObject *pObject);
+
+    /* Remove an item from the cache */
+    CBaseObject *RemoveFromCache();
+
+    /* Delete all the objects held in the cache */
+    void RemoveAll(void);
+
+    /* Return the cache size which is set during construction */
+    INT GetCacheSize(void) const {return m_iCacheSize;};
+};
+
+#endif /* __CACHE__ */
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/checkbmi.h

@@ -0,0 +1,120 @@
+//  Copyright (c) 1992 - 1997  Microsoft Corporation.  All Rights Reserved.
+
+#ifndef _CHECKBMI_H_
+#define _CHECKBMI_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+//  Helper
+__inline BOOL MultiplyCheckOverflow(DWORD a, DWORD b, __deref_out_range(==, a * b) DWORD *pab) {
+    *pab = a * b;
+    if ((a == 0) || (((*pab) / a) == b)) {
+        return TRUE;
+    }
+    return FALSE;
+}
+
+
+//  Checks if the fields in a BITMAPINFOHEADER won't generate
+//  overlows and buffer overruns
+//  This is not a complete check and does not guarantee code using this structure will be secure
+//  from attack
+//  Bugs this is guarding against:
+//        1.  Total structure size calculation overflowing
+//        2.  biClrUsed > 256 for 8-bit palettized content
+//        3.  Total bitmap size in bytes overflowing
+//        4.  biSize < size of the base structure leading to accessessing random memory
+//        5.  Total structure size exceeding know size of data
+//
+
+__success(return != 0) __inline BOOL ValidateBitmapInfoHeader(
+    const BITMAPINFOHEADER *pbmi,   // pointer to structure to check
+    __out_range(>=, sizeof(BITMAPINFOHEADER)) DWORD cbSize     // size of memory block containing structure
+)
+{
+    DWORD dwWidthInBytes;
+    DWORD dwBpp;
+    DWORD dwWidthInBits;
+    DWORD dwHeight;
+    DWORD dwSizeImage;
+    DWORD dwClrUsed;
+
+    // Reject bad parameters - do the size check first to avoid reading bad memory
+    if (cbSize < sizeof(BITMAPINFOHEADER) ||
+        pbmi->biSize < sizeof(BITMAPINFOHEADER) ||
+        pbmi->biSize > 4096) {
+        return FALSE;
+    }
+
+    //  Reject 0 size
+    if (pbmi->biWidth == 0 || pbmi->biHeight == 0) {
+        return FALSE;
+    }
+
+    // Use bpp of 200 for validating against further overflows if not set for compressed format
+    dwBpp = 200;
+
+    if (pbmi->biBitCount > dwBpp) {
+        return FALSE;
+    }
+
+    // Strictly speaking abs can overflow so cast explicitly to DWORD
+    dwHeight = (DWORD)abs(pbmi->biHeight);
+
+    if (!MultiplyCheckOverflow(dwBpp, (DWORD)pbmi->biWidth, &dwWidthInBits)) {
+        return FALSE;
+    }
+
+    //  Compute correct width in bytes - rounding up to 4 bytes
+    dwWidthInBytes = (dwWidthInBits / 8 + 3) & ~3;
+
+    if (!MultiplyCheckOverflow(dwWidthInBytes, dwHeight, &dwSizeImage)) {
+        return FALSE;
+    }
+
+    // Fail if total size is 0 - this catches indivual quantities being 0
+    // Also don't allow huge values > 1GB which might cause arithmetic
+    // errors for users
+    if (dwSizeImage > 0x40000000 ||
+        pbmi->biSizeImage > 0x40000000) {
+        return FALSE;
+    }
+
+    //  Fail if biClrUsed looks bad
+    if (pbmi->biClrUsed > 256) {
+        return FALSE;
+    }
+
+    if (pbmi->biClrUsed == 0 && pbmi->biBitCount <= 8 && pbmi->biBitCount > 0) {
+        dwClrUsed = (1 << pbmi->biBitCount);
+    } else {
+        dwClrUsed = pbmi->biClrUsed;
+    }
+
+    //  Check total size
+    if (cbSize < pbmi->biSize + dwClrUsed * sizeof(RGBQUAD) +
+                 (pbmi->biCompression == BI_BITFIELDS ? 3 * sizeof(DWORD) : 0)) {
+        return FALSE;
+    }
+
+    //  If it is RGB validate biSizeImage - lots of code assumes the size is correct
+    if (pbmi->biCompression == BI_RGB || pbmi->biCompression == BI_BITFIELDS) {
+        if (pbmi->biSizeImage != 0) {
+            DWORD dwBits = (DWORD)pbmi->biWidth * (DWORD)pbmi->biBitCount;
+            DWORD dwWidthInBytes = ((DWORD)((dwBits+31) & (~31)) / 8);
+            DWORD dwTotalSize = (DWORD)abs(pbmi->biHeight) * dwWidthInBytes;
+            if (dwTotalSize > pbmi->biSizeImage) {
+                return FALSE;
+            }
+        }
+    }
+    return TRUE;
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // _CHECKBMI_H_

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/combase.cpp

@@ -0,0 +1,265 @@
+//------------------------------------------------------------------------------
+// File: ComBase.cpp
+//
+// Desc: DirectShow base classes - implements class hierarchy for creating
+//       COM objects.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#pragma warning( disable : 4514 )   // Disable warnings re unused inline functions
+
+
+/* Define the static member variable */
+
+LONG CBaseObject::m_cObjects = 0;
+
+
+/* Constructor */
+
+CBaseObject::CBaseObject(__in_opt LPCTSTR pName)
+{
+    /* Increment the number of active objects */
+    InterlockedIncrement(&m_cObjects);
+
+#ifdef DEBUG
+
+#ifdef UNICODE
+    m_dwCookie = DbgRegisterObjectCreation(0, pName);
+#else
+    m_dwCookie = DbgRegisterObjectCreation(pName, 0);
+#endif
+
+#endif
+}
+
+#ifdef UNICODE
+CBaseObject::CBaseObject(const char *pName)
+{
+    /* Increment the number of active objects */
+    InterlockedIncrement(&m_cObjects);
+
+#ifdef DEBUG
+    m_dwCookie = DbgRegisterObjectCreation(pName, 0);
+#endif
+}
+#endif
+
+HINSTANCE	hlibOLEAut32;
+
+/* Destructor */
+
+CBaseObject::~CBaseObject()
+{
+    /* Decrement the number of objects active */
+    if (InterlockedDecrement(&m_cObjects) == 0) {
+	if (hlibOLEAut32) {
+	    FreeLibrary(hlibOLEAut32);
+
+	    hlibOLEAut32 = 0;
+	}
+    };
+
+
+#ifdef DEBUG
+    DbgRegisterObjectDestruction(m_dwCookie);
+#endif
+}
+
+static const TCHAR szOle32Aut[]   = TEXT("OleAut32.dll");
+
+HINSTANCE LoadOLEAut32()
+{
+    if (hlibOLEAut32 == 0) {
+
+	hlibOLEAut32 = LoadLibrary(szOle32Aut);
+    }
+
+    return hlibOLEAut32;
+}
+
+
+/* Constructor */
+
+// We know we use "this" in the initialization list, we also know we don't modify *phr.
+#pragma warning( disable : 4355 4100 )
+CUnknown::CUnknown(__in_opt LPCTSTR pName, __in_opt LPUNKNOWN pUnk)
+: CBaseObject(pName)
+/* Start the object with a reference count of zero - when the      */
+/* object is queried for it's first interface this may be          */
+/* incremented depending on whether or not this object is          */
+/* currently being aggregated upon                                 */
+, m_cRef(0)
+/* Set our pointer to our IUnknown interface.                      */
+/* If we have an outer, use its, otherwise use ours.               */
+/* This pointer effectivly points to the owner of                  */
+/* this object and can be accessed by the GetOwner() method.       */
+, m_pUnknown( pUnk != 0 ? pUnk : reinterpret_cast<LPUNKNOWN>( static_cast<PNDUNKNOWN>(this) ) )
+ /* Why the double cast?  Well, the inner cast is a type-safe cast */
+ /* to pointer to a type from which we inherit.  The second is     */
+ /* type-unsafe but works because INonDelegatingUnknown "behaves   */
+ /* like" IUnknown. (Only the names on the methods change.)        */
+{
+    // Everything we need to do has been done in the initializer list
+}
+
+// This does the same as above except it has a useless HRESULT argument
+// use the previous constructor, this is just left for compatibility...
+CUnknown::CUnknown(__in_opt LPCTSTR pName, __in_opt LPUNKNOWN pUnk, __inout_opt HRESULT *phr) :
+    CBaseObject(pName),
+    m_cRef(0),
+    m_pUnknown( pUnk != 0 ? pUnk : reinterpret_cast<LPUNKNOWN>( static_cast<PNDUNKNOWN>(this) ) )
+{
+}
+
+#ifdef UNICODE
+CUnknown::CUnknown(__in_opt LPCSTR pName, __in_opt LPUNKNOWN pUnk)
+: CBaseObject(pName), m_cRef(0),
+    m_pUnknown( pUnk != 0 ? pUnk : reinterpret_cast<LPUNKNOWN>( static_cast<PNDUNKNOWN>(this) ) )
+{ }
+
+CUnknown::CUnknown(__in_opt LPCSTR pName, __in_opt LPUNKNOWN pUnk, __inout_opt HRESULT *phr) :
+    CBaseObject(pName), m_cRef(0),
+    m_pUnknown( pUnk != 0 ? pUnk : reinterpret_cast<LPUNKNOWN>( static_cast<PNDUNKNOWN>(this) ) )
+{ }
+
+#endif
+
+#pragma warning( default : 4355 4100 )
+
+
+/* QueryInterface */
+
+STDMETHODIMP CUnknown::NonDelegatingQueryInterface(REFIID riid, __deref_out void ** ppv)
+{
+    CheckPointer(ppv,E_POINTER);
+    ValidateReadWritePtr(ppv,sizeof(PVOID));
+
+    /* We know only about IUnknown */
+
+    if (riid == IID_IUnknown) {
+        GetInterface((LPUNKNOWN) (PNDUNKNOWN) this, ppv);
+        return NOERROR;
+    } else {
+        *ppv = NULL;
+        return E_NOINTERFACE;
+    }
+}
+
+/* We have to ensure that we DON'T use a max macro, since these will typically   */
+/* lead to one of the parameters being evaluated twice.  Since we are worried    */
+/* about concurrency, we can't afford to access the m_cRef twice since we can't  */
+/* afford to run the risk that its value having changed between accesses.        */
+
+template<class T> inline static T ourmax( const T & a, const T & b )
+{
+    return a > b ? a : b;
+}
+
+/* AddRef */
+
+STDMETHODIMP_(ULONG) CUnknown::NonDelegatingAddRef()
+{
+    LONG lRef = InterlockedIncrement( &m_cRef );
+    ASSERT(lRef > 0);
+    DbgLog((LOG_MEMORY,3,TEXT("    Obj %d ref++ = %d"),
+           m_dwCookie, m_cRef));
+    return ourmax(ULONG(m_cRef), 1ul);
+}
+
+
+/* Release */
+
+STDMETHODIMP_(ULONG) CUnknown::NonDelegatingRelease()
+{
+    /* If the reference count drops to zero delete ourselves */
+
+    LONG lRef = InterlockedDecrement( &m_cRef );
+    ASSERT(lRef >= 0);
+
+    DbgLog((LOG_MEMORY,3,TEXT("    Object %d ref-- = %d"),
+	    m_dwCookie, m_cRef));
+    if (lRef == 0) {
+
+        // COM rules say we must protect against re-entrancy.
+        // If we are an aggregator and we hold our own interfaces
+        // on the aggregatee, the QI for these interfaces will
+        // addref ourselves. So after doing the QI we must release
+        // a ref count on ourselves. Then, before releasing the
+        // private interface, we must addref ourselves. When we do
+        // this from the destructor here it will result in the ref
+        // count going to 1 and then back to 0 causing us to
+        // re-enter the destructor. Hence we add an extra refcount here
+        // once we know we will delete the object.
+        // for an example aggregator see filgraph\distrib.cpp.
+
+        m_cRef++;
+
+        delete this;
+        return ULONG(0);
+    } else {
+        //  Don't touch m_cRef again even in this leg as the object
+        //  may have just been released on another thread too
+        return ourmax(ULONG(lRef), 1ul);
+    }
+}
+
+
+/* Return an interface pointer to a requesting client
+   performing a thread safe AddRef as necessary */
+
+STDAPI GetInterface(LPUNKNOWN pUnk, __out void **ppv)
+{
+    CheckPointer(ppv, E_POINTER);
+    *ppv = pUnk;
+    pUnk->AddRef();
+    return NOERROR;
+}
+
+
+/* Compares two interfaces and returns TRUE if they are on the same object */
+
+BOOL WINAPI IsEqualObject(IUnknown *pFirst, IUnknown *pSecond)
+{
+    /*  Different objects can't have the same interface pointer for
+        any interface
+    */
+    if (pFirst == pSecond) {
+        return TRUE;
+    }
+    /*  OK - do it the hard way - check if they have the same
+        IUnknown pointers - a single object can only have one of these
+    */
+    LPUNKNOWN pUnknown1;     // Retrieve the IUnknown interface
+    LPUNKNOWN pUnknown2;     // Retrieve the other IUnknown interface
+    HRESULT hr;              // General OLE return code
+
+    ASSERT(pFirst);
+    ASSERT(pSecond);
+
+    /* See if the IUnknown pointers match */
+
+    hr = pFirst->QueryInterface(IID_IUnknown,(void **) &pUnknown1);
+    if (FAILED(hr)) {
+        return FALSE;
+    }
+    ASSERT(pUnknown1);
+
+    /* Release the extra interface we hold */
+
+    pUnknown1->Release();
+
+    hr = pSecond->QueryInterface(IID_IUnknown,(void **) &pUnknown2);
+    if (FAILED(hr)) {
+        return FALSE;
+    }
+    ASSERT(pUnknown2);
+
+    /* Release the extra interface we hold */
+
+    pUnknown2->Release();
+    return (pUnknown1 == pUnknown2);
+}
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/combase.h

@@ -0,0 +1,305 @@
+//------------------------------------------------------------------------------
+// File: ComBase.h
+//
+// Desc: DirectShow base classes - defines a class hierarchy for creating
+//       COM objects.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+/*
+
+a. Derive your COM object from CUnknown
+
+b. Make a static CreateInstance function that takes an LPUNKNOWN, an HRESULT *
+   and a TCHAR *. The LPUNKNOWN defines the object to delegate IUnknown calls
+   to. The HRESULT * allows error codes to be passed around constructors and
+   the TCHAR * is a descriptive name that can be printed on the debugger.
+
+   It is important that constructors only change the HRESULT * if they have
+   to set an ERROR code, if it was successful then leave it alone or you may
+   overwrite an error code from an object previously created.
+
+   When you call a constructor the descriptive name should be in static store
+   as we do not copy the string. To stop large amounts of memory being used
+   in retail builds by all these static strings use the NAME macro,
+
+   CMyFilter = new CImplFilter(NAME("My filter"),pUnknown,phr);
+   if (FAILED(hr)) {
+       return hr;
+   }
+
+   In retail builds NAME(_x_) compiles to NULL, the base CBaseObject class
+   knows not to do anything with objects that don't have a name.
+
+c. Have a constructor for your object that passes the LPUNKNOWN, HRESULT * and
+   TCHAR * to the CUnknown constructor. You can set the HRESULT if you have an
+   error, or just simply pass it through to the constructor.
+
+   The object creation will fail in the class factory if the HRESULT indicates
+   an error (ie FAILED(HRESULT) == TRUE)
+
+d. Create a FactoryTemplate with your object's class id and CreateInstance
+   function.
+
+Then (for each interface) either
+
+Multiple inheritance
+
+1. Also derive it from ISomeInterface
+2. Include DECLARE_IUNKNOWN in your class definition to declare
+   implementations of QueryInterface, AddRef and Release that
+   call the outer unknown
+3. Override NonDelegatingQueryInterface to expose ISomeInterface by
+   code something like
+
+     if (riid == IID_ISomeInterface) {
+         return GetInterface((ISomeInterface *) this, ppv);
+     } else {
+         return CUnknown::NonDelegatingQueryInterface(riid, ppv);
+     }
+
+4. Declare and implement the member functions of ISomeInterface.
+
+or: Nested interfaces
+
+1. Declare a class derived from CUnknown
+2. Include DECLARE_IUNKNOWN in your class definition
+3. Override NonDelegatingQueryInterface to expose ISomeInterface by
+   code something like
+
+     if (riid == IID_ISomeInterface) {
+         return GetInterface((ISomeInterface *) this, ppv);
+     } else {
+         return CUnknown::NonDelegatingQueryInterface(riid, ppv);
+     }
+
+4. Implement the member functions of ISomeInterface. Use GetOwner() to
+   access the COM object class.
+
+And in your COM object class:
+
+5. Make the nested class a friend of the COM object class, and declare
+   an instance of the nested class as a member of the COM object class.
+
+   NOTE that because you must always pass the outer unknown and an hResult
+   to the CUnknown constructor you cannot use a default constructor, in
+   other words you will have to make the member variable a pointer to the
+   class and make a NEW call in your constructor to actually create it.
+
+6. override the NonDelegatingQueryInterface with code like this:
+
+     if (riid == IID_ISomeInterface) {
+         return m_pImplFilter->
+            NonDelegatingQueryInterface(IID_ISomeInterface, ppv);
+     } else {
+         return CUnknown::NonDelegatingQueryInterface(riid, ppv);
+     }
+
+You can have mixed classes which support some interfaces via multiple
+inheritance and some via nested classes
+
+*/
+
+#ifndef __COMBASE__
+#define __COMBASE__
+
+// Filter Setup data structures no defined in axextend.idl
+
+typedef REGPINTYPES
+AMOVIESETUP_MEDIATYPE, * PAMOVIESETUP_MEDIATYPE, * FAR LPAMOVIESETUP_MEDIATYPE;
+
+typedef REGFILTERPINS
+AMOVIESETUP_PIN, * PAMOVIESETUP_PIN, * FAR LPAMOVIESETUP_PIN;
+
+typedef struct _AMOVIESETUP_FILTER
+{
+  const CLSID * clsID;
+  const WCHAR * strName;
+  DWORD      dwMerit;
+  UINT       nPins;
+  const AMOVIESETUP_PIN * lpPin;
+}
+AMOVIESETUP_FILTER, * PAMOVIESETUP_FILTER, * FAR LPAMOVIESETUP_FILTER;
+
+/* The DLLENTRY module initialises the module handle on loading */
+
+extern HINSTANCE g_hInst;
+
+/* On DLL load remember which platform we are running on */
+
+extern DWORD g_amPlatform;
+extern OSVERSIONINFO g_osInfo;     // Filled in by GetVersionEx
+
+/* Version of IUnknown that is renamed to allow a class to support both
+   non delegating and delegating IUnknowns in the same COM object */
+
+#ifndef INONDELEGATINGUNKNOWN_DEFINED
+DECLARE_INTERFACE(INonDelegatingUnknown)
+{
+    STDMETHOD(NonDelegatingQueryInterface) (THIS_ REFIID, LPVOID *) PURE;
+    STDMETHOD_(ULONG, NonDelegatingAddRef)(THIS) PURE;
+    STDMETHOD_(ULONG, NonDelegatingRelease)(THIS) PURE;
+};
+#define INONDELEGATINGUNKNOWN_DEFINED
+#endif
+
+typedef INonDelegatingUnknown *PNDUNKNOWN;
+
+
+/* This is the base object class that supports active object counting. As
+   part of the debug facilities we trace every time a C++ object is created
+   or destroyed. The name of the object has to be passed up through the class
+   derivation list during construction as you cannot call virtual functions
+   in the constructor. The downside of all this is that every single object
+   constructor has to take an object name parameter that describes it */
+
+class CBaseObject
+{
+
+private:
+
+    // Disable the copy constructor and assignment by default so you will get
+    //   compiler errors instead of unexpected behaviour if you pass objects
+    //   by value or assign objects.
+    CBaseObject(const CBaseObject& objectSrc);          // no implementation
+    void operator=(const CBaseObject& objectSrc);       // no implementation
+
+private:
+    static LONG m_cObjects;     /* Total number of objects active */
+
+protected:
+#ifdef DEBUG
+    DWORD m_dwCookie;           /* Cookie identifying this object */
+#endif
+
+
+public:
+
+    /* These increment and decrement the number of active objects */
+
+    CBaseObject(__in_opt LPCTSTR pName);
+#ifdef UNICODE
+    CBaseObject(__in_opt LPCSTR pName);
+#endif
+    ~CBaseObject();
+
+    /* Call this to find if there are any CUnknown derived objects active */
+
+    static LONG ObjectsActive() {
+        return m_cObjects;
+    };
+};
+
+
+/* An object that supports one or more COM interfaces will be based on
+   this class. It supports counting of total objects for DLLCanUnloadNow
+   support, and an implementation of the core non delegating IUnknown */
+
+class AM_NOVTABLE CUnknown : public INonDelegatingUnknown,
+                 public CBaseObject
+{
+private:
+    const LPUNKNOWN m_pUnknown; /* Owner of this object */
+
+protected:                      /* So we can override NonDelegatingRelease() */
+    volatile LONG m_cRef;       /* Number of reference counts */
+
+public:
+
+    CUnknown(__in_opt LPCTSTR pName, __in_opt LPUNKNOWN pUnk);
+    virtual ~CUnknown() {};
+
+    // This is redundant, just use the other constructor
+    //   as we never touch the HRESULT in this anyway
+    CUnknown(__in_opt LPCTSTR Name, __in_opt LPUNKNOWN pUnk, __inout_opt HRESULT *phr);
+#ifdef UNICODE
+    CUnknown(__in_opt LPCSTR pName, __in_opt LPUNKNOWN pUnk);
+    CUnknown(__in_opt LPCSTR pName, __in_opt LPUNKNOWN pUnk,__inout_opt HRESULT *phr);
+#endif
+
+    /* Return the owner of this object */
+
+    LPUNKNOWN GetOwner() const {
+        return m_pUnknown;
+    };
+
+    /* Called from the class factory to create a new instance, it is
+       pure virtual so it must be overriden in your derived class */
+
+    /* static CUnknown *CreateInstance(LPUNKNOWN, HRESULT *) */
+
+    /* Non delegating unknown implementation */
+
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID, __deref_out void **);
+    STDMETHODIMP_(ULONG) NonDelegatingAddRef();
+    STDMETHODIMP_(ULONG) NonDelegatingRelease();
+};
+
+/* Return an interface pointer to a requesting client
+   performing a thread safe AddRef as necessary */
+
+STDAPI GetInterface(LPUNKNOWN pUnk, __out void **ppv);
+
+/* A function that can create a new COM object */
+
+typedef CUnknown *(CALLBACK *LPFNNewCOMObject)(__in_opt LPUNKNOWN pUnkOuter, __inout_opt HRESULT *phr);
+
+/*  A function (can be NULL) which is called from the DLL entrypoint
+    routine for each factory template:
+
+    bLoading - TRUE on DLL load, FALSE on DLL unload
+    rclsid   - the m_ClsID of the entry
+*/
+typedef void (CALLBACK *LPFNInitRoutine)(BOOL bLoading, const CLSID *rclsid);
+
+/* Create one of these per object class in an array so that
+   the default class factory code can create new instances */
+
+class CFactoryTemplate {
+
+public:
+
+    const WCHAR *              m_Name;
+    const CLSID *              m_ClsID;
+    LPFNNewCOMObject           m_lpfnNew;
+    LPFNInitRoutine            m_lpfnInit;
+    const AMOVIESETUP_FILTER * m_pAMovieSetup_Filter;
+
+    BOOL IsClassID(REFCLSID rclsid) const {
+        return (IsEqualCLSID(*m_ClsID,rclsid));
+    };
+
+    CUnknown *CreateInstance(__inout_opt LPUNKNOWN pUnk, __inout_opt HRESULT *phr) const {
+        CheckPointer(phr,NULL);
+        return m_lpfnNew(pUnk, phr);
+    };
+};
+
+
+/* You must override the (pure virtual) NonDelegatingQueryInterface to return
+   interface pointers (using GetInterface) to the interfaces your derived
+   class supports (the default implementation only supports IUnknown) */
+
+#define DECLARE_IUNKNOWN                                        \
+    STDMETHODIMP QueryInterface(REFIID riid, __deref_out void **ppv) {      \
+        return GetOwner()->QueryInterface(riid,ppv);            \
+    };                                                          \
+    STDMETHODIMP_(ULONG) AddRef() {                             \
+        return GetOwner()->AddRef();                            \
+    };                                                          \
+    STDMETHODIMP_(ULONG) Release() {                            \
+        return GetOwner()->Release();                           \
+    };
+
+
+
+HINSTANCE	LoadOLEAut32();
+
+
+#endif /* __COMBASE__ */
+
+
+
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/cprop.cpp

@@ -0,0 +1,383 @@
+//------------------------------------------------------------------------------
+// File: CProp.cpp
+//
+// Desc: DirectShow base classes - implements CBasePropertyPage class.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+
+// Constructor for the base property page class. As described in the header
+// file we must be initialised with dialog and title resource identifiers.
+// The class supports IPropertyPage and overrides AddRef and Release calls
+// to keep track of the reference counts. When the last count is released
+// we call SetPageSite(NULL) and SetObjects(0,NULL) to release interfaces
+// previously obtained by the property page when it had SetObjects called
+
+CBasePropertyPage::CBasePropertyPage(__in_opt LPCTSTR pName,   // Debug only name
+                                     __inout_opt LPUNKNOWN pUnk, // COM Delegator
+                                     int DialogId,      // Resource ID
+                                     int TitleId) :     // To get tital
+    CUnknown(pName,pUnk),
+    m_DialogId(DialogId),
+    m_TitleId(TitleId),
+    m_hwnd(NULL),
+    m_Dlg(NULL),
+    m_pPageSite(NULL),
+    m_bObjectSet(FALSE),
+    m_bDirty(FALSE)
+{
+}
+
+#ifdef UNICODE
+CBasePropertyPage::CBasePropertyPage(__in_opt LPCSTR pName,     // Debug only name
+                                     __inout_opt LPUNKNOWN pUnk,  // COM Delegator
+                                     int DialogId,      // Resource ID
+                                     int TitleId) :     // To get tital
+    CUnknown(pName,pUnk),
+    m_DialogId(DialogId),
+    m_TitleId(TitleId),
+    m_hwnd(NULL),
+    m_Dlg(NULL),
+    m_pPageSite(NULL),
+    m_bObjectSet(FALSE),
+    m_bDirty(FALSE)
+{
+}
+#endif
+
+// Increment our reference count
+
+STDMETHODIMP_(ULONG) CBasePropertyPage::NonDelegatingAddRef()
+{
+    LONG lRef = InterlockedIncrement(&m_cRef);
+    ASSERT(lRef > 0);
+    return max(ULONG(m_cRef),1ul);
+}
+
+
+// Release a reference count and protect against reentrancy
+
+STDMETHODIMP_(ULONG) CBasePropertyPage::NonDelegatingRelease()
+{
+    // If the reference count drops to zero delete ourselves
+
+    LONG lRef = InterlockedDecrement(&m_cRef);
+    if (lRef == 0) {
+        m_cRef++;
+        SetPageSite(NULL);
+        SetObjects(0,NULL);
+        delete this;
+        return ULONG(0);
+    } else {
+        //  Don't touch m_cRef again here!
+        return max(ULONG(lRef),1ul);
+    }
+}
+
+
+// Expose our IPropertyPage interface
+
+STDMETHODIMP
+CBasePropertyPage::NonDelegatingQueryInterface(REFIID riid,__deref_out void **ppv)
+{
+    if (riid == IID_IPropertyPage) {
+        return GetInterface((IPropertyPage *)this,ppv);
+    } else {
+        return CUnknown::NonDelegatingQueryInterface(riid,ppv);
+    }
+}
+
+
+// Get the page info so that the page site can size itself
+
+STDMETHODIMP CBasePropertyPage::GetPageInfo(__out LPPROPPAGEINFO pPageInfo)
+{
+    CheckPointer(pPageInfo,E_POINTER);
+    WCHAR wszTitle[STR_MAX_LENGTH];
+    WideStringFromResource(wszTitle,m_TitleId);
+
+    // Allocate dynamic memory for the property page title
+
+    LPOLESTR pszTitle;
+    HRESULT hr = AMGetWideString(wszTitle, &pszTitle);
+    if (FAILED(hr)) {
+        NOTE("No caption memory");
+        return hr;
+    }
+
+    pPageInfo->cb               = sizeof(PROPPAGEINFO);
+    pPageInfo->pszTitle         = pszTitle;
+    pPageInfo->pszDocString     = NULL;
+    pPageInfo->pszHelpFile      = NULL;
+    pPageInfo->dwHelpContext    = 0;
+
+    // Set defaults in case GetDialogSize fails
+    pPageInfo->size.cx          = 340;
+    pPageInfo->size.cy          = 150;
+
+    GetDialogSize(m_DialogId, DialogProc,0L,&pPageInfo->size);
+    return NOERROR;
+}
+
+
+// Handles the messages for our property window
+
+INT_PTR CALLBACK CBasePropertyPage::DialogProc(HWND hwnd,
+                                            UINT uMsg,
+                                            WPARAM wParam,
+                                            LPARAM lParam)
+{
+    CBasePropertyPage *pPropertyPage;
+
+    switch (uMsg) {
+
+        case WM_INITDIALOG:
+
+            _SetWindowLongPtr(hwnd, DWLP_USER, lParam);
+
+            // This pointer may be NULL when calculating size
+
+            pPropertyPage = (CBasePropertyPage *) lParam;
+            if (pPropertyPage == NULL) {
+                return (LRESULT) 1;
+            }
+            pPropertyPage->m_Dlg = hwnd;
+    }
+
+    // This pointer may be NULL when calculating size
+
+    pPropertyPage = _GetWindowLongPtr<CBasePropertyPage*>(hwnd, DWLP_USER);
+    if (pPropertyPage == NULL) {
+        return (LRESULT) 1;
+    }
+    return pPropertyPage->OnReceiveMessage(hwnd,uMsg,wParam,lParam);
+}
+
+
+// Tells us the object that should be informed of the property changes
+
+STDMETHODIMP CBasePropertyPage::SetObjects(ULONG cObjects,__in_ecount_opt(cObjects) LPUNKNOWN *ppUnk)
+{
+    if (cObjects == 1) {
+
+        if ((ppUnk == NULL) || (*ppUnk == NULL)) {
+            return E_POINTER;
+        }
+
+        // Set a flag to say that we have set the Object
+        m_bObjectSet = TRUE ;
+        return OnConnect(*ppUnk);
+
+    } else if (cObjects == 0) {
+
+        // Set a flag to say that we have not set the Object for the page
+        m_bObjectSet = FALSE ;
+        return OnDisconnect();
+    }
+
+    DbgBreak("No support for more than one object");
+    return E_UNEXPECTED;
+}
+
+
+// Create the window we will use to edit properties
+
+STDMETHODIMP CBasePropertyPage::Activate(HWND hwndParent,
+                                         LPCRECT pRect,
+                                         BOOL fModal)
+{
+    CheckPointer(pRect,E_POINTER);
+
+    // Return failure if SetObject has not been called.
+    if (m_bObjectSet == FALSE) {
+        return E_UNEXPECTED;
+    }
+
+    if (m_hwnd) {
+        return E_UNEXPECTED;
+    }
+
+    m_hwnd = CreateDialogParam(g_hInst,
+                               MAKEINTRESOURCE(m_DialogId),
+                               hwndParent,
+                               DialogProc,
+                               (LPARAM) this);
+    if (m_hwnd == NULL) {
+        return E_OUTOFMEMORY;
+    }
+
+    OnActivate();
+    Move(pRect);
+    return Show(SW_SHOWNORMAL);
+}
+
+
+// Set the position of the property page
+
+STDMETHODIMP CBasePropertyPage::Move(LPCRECT pRect)
+{
+    CheckPointer(pRect,E_POINTER);
+
+    if (m_hwnd == NULL) {
+        return E_UNEXPECTED;
+    }
+
+    MoveWindow(m_hwnd,              // Property page handle
+               pRect->left,         // x coordinate
+               pRect->top,          // y coordinate
+               WIDTH(pRect),        // Overall window width
+               HEIGHT(pRect),       // And likewise height
+               TRUE);               // Should we repaint it
+
+    return NOERROR;
+}
+
+
+// Display the property dialog
+
+STDMETHODIMP CBasePropertyPage::Show(UINT nCmdShow)
+{
+   // Have we been activated yet
+
+    if (m_hwnd == NULL) {
+        return E_UNEXPECTED;
+    }
+
+    // Ignore wrong show flags
+
+    if ((nCmdShow != SW_SHOW) && (nCmdShow != SW_SHOWNORMAL) && (nCmdShow != SW_HIDE)) {
+        return E_INVALIDARG;
+    }
+
+    ShowWindow(m_hwnd,nCmdShow);
+    InvalidateRect(m_hwnd,NULL,TRUE);
+    return NOERROR;
+}
+
+
+// Destroy the property page dialog
+
+STDMETHODIMP CBasePropertyPage::Deactivate(void)
+{
+    if (m_hwnd == NULL) {
+        return E_UNEXPECTED;
+    }
+
+    // Remove WS_EX_CONTROLPARENT before DestroyWindow call
+
+    DWORD dwStyle = GetWindowLong(m_hwnd, GWL_EXSTYLE);
+    dwStyle = dwStyle & (~WS_EX_CONTROLPARENT);
+
+    //  Set m_hwnd to be NULL temporarily so the message handler
+    //  for WM_STYLECHANGING doesn't add the WS_EX_CONTROLPARENT
+    //  style back in
+    HWND hwnd = m_hwnd;
+    m_hwnd = NULL;
+    SetWindowLong(hwnd, GWL_EXSTYLE, dwStyle);
+    m_hwnd = hwnd;
+
+    OnDeactivate();
+
+    // Destroy the dialog window
+
+    DestroyWindow(m_hwnd);
+    m_hwnd = NULL;
+    return NOERROR;
+}
+
+
+// Tells the application property page site
+
+STDMETHODIMP CBasePropertyPage::SetPageSite(__in_opt LPPROPERTYPAGESITE pPageSite)
+{
+    if (pPageSite) {
+
+        if (m_pPageSite) {
+            return E_UNEXPECTED;
+        }
+
+        m_pPageSite = pPageSite;
+        m_pPageSite->AddRef();
+
+    } else {
+
+        if (m_pPageSite == NULL) {
+            return E_UNEXPECTED;
+        }
+
+        m_pPageSite->Release();
+        m_pPageSite = NULL;
+    }
+    return NOERROR;
+}
+
+
+// Apply any changes so far made
+
+STDMETHODIMP CBasePropertyPage::Apply()
+{
+    // In ActiveMovie 1.0 we used to check whether we had been activated or
+    // not. This is too constrictive. Apply should be allowed as long as
+    // SetObject was called to set an object. So we will no longer check to
+    // see if we have been activated (ie., m_hWnd != NULL), but instead
+    // make sure that m_bObjectSet is TRUE (ie., SetObject has been called).
+
+    if (m_bObjectSet == FALSE) {
+        return E_UNEXPECTED;
+    }
+
+    // Must have had a site set
+
+    if (m_pPageSite == NULL) {
+        return E_UNEXPECTED;
+    }
+
+    // Has anything changed
+
+    if (m_bDirty == FALSE) {
+        return NOERROR;
+    }
+
+    // Commit derived class changes
+
+    HRESULT hr = OnApplyChanges();
+    if (SUCCEEDED(hr)) {
+        m_bDirty = FALSE;
+    }
+    return hr;
+}
+
+
+// Base class definition for message handling
+
+INT_PTR CBasePropertyPage::OnReceiveMessage(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam)
+{
+    // we would like the TAB key to move around the tab stops in our property
+    // page, but for some reason OleCreatePropertyFrame clears the CONTROLPARENT
+    // style behind our back, so we need to switch it back on now behind its
+    // back.  Otherwise the tab key will be useless in every page.
+    //
+
+    CBasePropertyPage *pPropertyPage;
+    {
+        pPropertyPage = _GetWindowLongPtr<CBasePropertyPage*>(hwnd, DWLP_USER);
+
+        if (pPropertyPage->m_hwnd == NULL) {
+            return 0;
+        }
+        switch (uMsg) {
+          case WM_STYLECHANGING:
+              if (wParam == GWL_EXSTYLE) {
+                  LPSTYLESTRUCT lpss = (LPSTYLESTRUCT)lParam;
+                  lpss->styleNew |= WS_EX_CONTROLPARENT;
+                  return 0;
+              }
+        }
+    }
+		
+    return DefWindowProc(hwnd,uMsg,wParam,lParam);
+}
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/cprop.h

@@ -0,0 +1,95 @@
+//------------------------------------------------------------------------------
+// File: CProp.h
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __CPROP__
+#define __CPROP__
+
+// Base property page class. Filters typically expose custom properties by
+// implementing special control interfaces, examples are IDirectDrawVideo
+// and IQualProp on renderers. This allows property pages to be built that
+// use the given interface. Applications such as the ActiveMovie OCX query
+// filters for the property pages they support and expose them to the user
+//
+// This class provides all the framework for a property page. A property
+// page is a COM object that supports IPropertyPage. We should be created
+// with a resource ID for the dialog which we will load when required. We
+// should also be given in the constructor a resource ID for a title string
+// we will load from the DLLs STRINGTABLE. The property page titles must be
+// stored in resource files so that they can be easily internationalised
+//
+// We have a number of virtual methods (not PURE) that may be overriden in
+// derived classes to query for interfaces and so on. These functions have
+// simple implementations here that just return NOERROR. Derived classes
+// will almost definately have to override the message handler method called
+// OnReceiveMessage. We have a static dialog procedure that calls the method
+// so that derived classes don't have to fiddle around with the this pointer
+
+class AM_NOVTABLE CBasePropertyPage : public IPropertyPage, public CUnknown
+{
+protected:
+
+    LPPROPERTYPAGESITE m_pPageSite;       // Details for our property site
+    HWND m_hwnd;                          // Window handle for the page
+    HWND m_Dlg;                           // Actual dialog window handle
+    BOOL m_bDirty;                        // Has anything been changed
+    int m_TitleId;                        // Resource identifier for title
+    int m_DialogId;                       // Dialog resource identifier
+
+    static INT_PTR CALLBACK DialogProc(HWND hwnd,
+                                       UINT uMsg,
+                                       WPARAM wParam,
+                                       LPARAM lParam);
+
+private:
+    BOOL m_bObjectSet ;                  // SetObject has been called or not.
+public:
+
+    CBasePropertyPage(__in_opt LPCTSTR pName,      // Debug only name
+                      __inout_opt LPUNKNOWN pUnk, // COM Delegator
+                      int DialogId,               // Resource ID
+                      int TitleId);               // To get tital
+
+#ifdef UNICODE
+    CBasePropertyPage(__in_opt LPCSTR pName,
+                      __inout_opt LPUNKNOWN pUnk,
+                      int DialogId,  
+                      int TitleId);
+#endif
+    virtual ~CBasePropertyPage() { };
+    DECLARE_IUNKNOWN
+
+    // Override these virtual methods
+
+    virtual HRESULT OnConnect(IUnknown *pUnknown) { return NOERROR; };
+    virtual HRESULT OnDisconnect() { return NOERROR; };
+    virtual HRESULT OnActivate() { return NOERROR; };
+    virtual HRESULT OnDeactivate() { return NOERROR; };
+    virtual HRESULT OnApplyChanges() { return NOERROR; };
+    virtual INT_PTR OnReceiveMessage(HWND hwnd,UINT uMsg,WPARAM wParam,LPARAM lParam);
+
+    // These implement an IPropertyPage interface
+
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv);
+    STDMETHODIMP_(ULONG) NonDelegatingRelease();
+    STDMETHODIMP_(ULONG) NonDelegatingAddRef();
+    STDMETHODIMP SetPageSite(__in_opt LPPROPERTYPAGESITE pPageSite);
+    STDMETHODIMP Activate(HWND hwndParent, LPCRECT prect,BOOL fModal);
+    STDMETHODIMP Deactivate(void);
+    STDMETHODIMP GetPageInfo(__out LPPROPPAGEINFO pPageInfo);
+    STDMETHODIMP SetObjects(ULONG cObjects, __in_ecount_opt(cObjects) LPUNKNOWN *ppUnk);
+    STDMETHODIMP Show(UINT nCmdShow);
+    STDMETHODIMP Move(LPCRECT prect);
+    STDMETHODIMP IsPageDirty(void) { return m_bDirty ? S_OK : S_FALSE; }
+    STDMETHODIMP Apply(void);
+    STDMETHODIMP Help(LPCWSTR lpszHelpDir) { return E_NOTIMPL; }
+    STDMETHODIMP TranslateAccelerator(__inout LPMSG lpMsg) { return E_NOTIMPL; }
+};
+
+#endif // __CPROP__
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/ctlutil.h

@@ -0,0 +1,923 @@
+//------------------------------------------------------------------------------
+// File: CtlUtil.h
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+// Base classes implementing IDispatch parsing for the basic control dual
+// interfaces. Derive from these and implement just the custom method and
+// property methods. We also implement CPosPassThru that can be used by
+// renderers and transforms to pass by IMediaPosition and IMediaSeeking
+
+#ifndef __CTLUTIL__
+#define __CTLUTIL__
+
+// OLE Automation has different ideas of TRUE and FALSE
+
+#define OATRUE (-1)
+#define OAFALSE (0)
+
+
+// It's possible that we could replace this class with CreateStdDispatch
+
+class CBaseDispatch
+{
+    ITypeInfo * m_pti;
+
+public:
+
+    CBaseDispatch() : m_pti(NULL) {}
+    ~CBaseDispatch();
+
+    /* IDispatch methods */
+    STDMETHODIMP GetTypeInfoCount(__out UINT * pctinfo);
+
+    STDMETHODIMP GetTypeInfo(
+      REFIID riid,
+      UINT itinfo,
+      LCID lcid,
+      __deref_out ITypeInfo ** pptinfo);
+
+    STDMETHODIMP GetIDsOfNames(
+      REFIID riid,
+      __in_ecount(cNames) LPOLESTR * rgszNames,
+      UINT cNames,
+      LCID lcid,
+      __out_ecount(cNames) DISPID * rgdispid);
+};
+
+
+class AM_NOVTABLE CMediaControl :
+    public IMediaControl,
+    public CUnknown
+{
+    CBaseDispatch m_basedisp;
+
+public:
+
+    CMediaControl(const TCHAR *, LPUNKNOWN);
+
+    DECLARE_IUNKNOWN
+
+    // override this to publicise our interfaces
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv);
+
+    /* IDispatch methods */
+    STDMETHODIMP GetTypeInfoCount(__out UINT * pctinfo);
+
+    STDMETHODIMP GetTypeInfo(
+      UINT itinfo,
+      LCID lcid,
+      __deref_out ITypeInfo ** pptinfo);
+
+    STDMETHODIMP GetIDsOfNames(
+      REFIID riid,
+      __in_ecount(cNames) LPOLESTR * rgszNames,
+      UINT cNames,
+      LCID lcid,
+      __out_ecount(cNames) DISPID * rgdispid);
+
+    STDMETHODIMP Invoke(
+      DISPID dispidMember,
+      REFIID riid,
+      LCID lcid,
+      WORD wFlags,
+      __in DISPPARAMS * pdispparams,
+      __out_opt VARIANT * pvarResult,
+      __out_opt EXCEPINFO * pexcepinfo,
+      __out_opt UINT * puArgErr);
+};
+
+
+class AM_NOVTABLE CMediaEvent :
+    public IMediaEventEx,
+    public CUnknown
+{
+    CBaseDispatch m_basedisp;
+
+public:
+
+    CMediaEvent(__in_opt LPCTSTR, __in_opt LPUNKNOWN);
+
+    DECLARE_IUNKNOWN
+
+    // override this to publicise our interfaces
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv);
+
+    /* IDispatch methods */
+    STDMETHODIMP GetTypeInfoCount(__out UINT * pctinfo);
+
+    STDMETHODIMP GetTypeInfo(
+      UINT itinfo,
+      LCID lcid,
+      __deref_out ITypeInfo ** pptinfo);
+
+    STDMETHODIMP GetIDsOfNames(
+      REFIID riid,
+      __in_ecount(cNames) LPOLESTR * rgszNames,
+      UINT cNames,
+      LCID lcid,
+      __out_ecount(cNames) DISPID * rgdispid);
+
+    STDMETHODIMP Invoke(
+      DISPID dispidMember,
+      REFIID riid,
+      LCID lcid,
+      WORD wFlags,
+      __in DISPPARAMS * pdispparams,
+      __out_opt VARIANT * pvarResult,
+      __out_opt EXCEPINFO * pexcepinfo,
+      __out_opt UINT * puArgErr);
+};
+
+
+class AM_NOVTABLE CMediaPosition :
+    public IMediaPosition,
+    public CUnknown
+{
+    CBaseDispatch m_basedisp;
+
+
+public:
+
+    CMediaPosition(__in_opt LPCTSTR, __in_opt LPUNKNOWN);
+    CMediaPosition(__in_opt LPCTSTR, __in_opt LPUNKNOWN, __inout HRESULT *phr);
+
+    DECLARE_IUNKNOWN
+
+    // override this to publicise our interfaces
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv);
+
+    /* IDispatch methods */
+    STDMETHODIMP GetTypeInfoCount(__out UINT * pctinfo);
+
+    STDMETHODIMP GetTypeInfo(
+      UINT itinfo,
+      LCID lcid,
+      __deref_out ITypeInfo ** pptinfo);
+
+    STDMETHODIMP GetIDsOfNames(
+      REFIID riid,
+      __in_ecount(cNames) LPOLESTR * rgszNames,
+      UINT cNames,
+      LCID lcid,
+      __out_ecount(cNames) DISPID * rgdispid);
+
+    STDMETHODIMP Invoke(
+      DISPID dispidMember,
+      REFIID riid,
+      LCID lcid,
+      WORD wFlags,
+      __in DISPPARAMS * pdispparams,
+      __out_opt VARIANT * pvarResult,
+      __out_opt EXCEPINFO * pexcepinfo,
+      __out_opt UINT * puArgErr);
+
+};
+
+
+// OA-compatibility means that we must use double as the RefTime value,
+// and REFERENCE_TIME (essentially a LONGLONG) within filters.
+// this class converts between the two
+
+class COARefTime : public CRefTime {
+public:
+
+    COARefTime() {
+    };
+
+    COARefTime(CRefTime t)
+        : CRefTime(t)
+    {
+    };
+
+    COARefTime(REFERENCE_TIME t)
+        : CRefTime(t)
+    {
+    };
+
+    COARefTime(double d) {
+        m_time = (LONGLONG) (d * 10000000);
+    };
+
+    operator double() {
+        return double(m_time) / 10000000;
+    };
+
+    operator REFERENCE_TIME() {
+        return m_time;
+    };
+
+    COARefTime& operator=(const double& rd)  {
+        m_time = (LONGLONG) (rd * 10000000);
+        return *this;
+    }
+
+    COARefTime& operator=(const REFERENCE_TIME& rt)  {
+        m_time = rt;
+        return *this;
+    }
+
+    inline BOOL operator==(const COARefTime& rt)
+    {
+        return m_time == rt.m_time;
+    };
+
+    inline BOOL operator!=(const COARefTime& rt)
+    {
+        return m_time != rt.m_time;
+    };
+
+    inline BOOL operator < (const COARefTime& rt)
+    {
+        return m_time < rt.m_time;
+    };
+
+    inline BOOL operator > (const COARefTime& rt)
+    {
+        return m_time > rt.m_time;
+    };
+
+    inline BOOL operator >= (const COARefTime& rt)
+    {
+        return m_time >= rt.m_time;
+    };
+
+    inline BOOL operator <= (const COARefTime& rt)
+    {
+        return m_time <= rt.m_time;
+    };
+
+    inline COARefTime operator+(const COARefTime& rt)
+    {
+        return COARefTime(m_time + rt.m_time);
+    };
+
+    inline COARefTime operator-(const COARefTime& rt)
+    {
+        return COARefTime(m_time - rt.m_time);
+    };
+
+    inline COARefTime operator*(LONG l)
+    {
+        return COARefTime(m_time * l);
+    };
+
+    inline COARefTime operator/(LONG l)
+    {
+        return COARefTime(m_time / l);
+    };
+
+private:
+    //  Prevent bugs from constructing from LONG (which gets
+    //  converted to double and then multiplied by 10000000
+    COARefTime(LONG);
+    LONG operator=(LONG);
+};
+
+
+// A utility class that handles IMediaPosition and IMediaSeeking on behalf
+// of single-input pin renderers, or transform filters.
+//
+// Renderers will expose this from the filter; transform filters will
+// expose it from the output pin and not the renderer.
+//
+// Create one of these, giving it your IPin* for your input pin, and delegate
+// all IMediaPosition methods to it. It will query the input pin for
+// IMediaPosition and respond appropriately.
+//
+// Call ForceRefresh if the pin connection changes.
+//
+// This class no longer caches the upstream IMediaPosition or IMediaSeeking
+// it acquires it on each method call. This means ForceRefresh is not needed.
+// The method is kept for source compatibility and to minimise the changes
+// if we need to put it back later for performance reasons.
+
+class CPosPassThru : public IMediaSeeking, public CMediaPosition
+{
+    IPin *m_pPin;
+
+    HRESULT GetPeer(__deref_out IMediaPosition **ppMP);
+    HRESULT GetPeerSeeking(__deref_out IMediaSeeking **ppMS);
+
+public:
+
+    CPosPassThru(__in_opt LPCTSTR, __in_opt LPUNKNOWN, __inout HRESULT*, IPin *);
+    DECLARE_IUNKNOWN
+
+    HRESULT ForceRefresh() {
+        return S_OK;
+    };
+
+    // override to return an accurate current position
+    virtual HRESULT GetMediaTime(__out LONGLONG *pStartTime, __out_opt LONGLONG *pEndTime) {
+        return E_FAIL;
+    }
+
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid,__deref_out void **ppv);
+
+    // IMediaSeeking methods
+    STDMETHODIMP GetCapabilities( __out DWORD * pCapabilities );
+    STDMETHODIMP CheckCapabilities( __inout DWORD * pCapabilities );
+    STDMETHODIMP SetTimeFormat(const GUID * pFormat);
+    STDMETHODIMP GetTimeFormat(__out GUID *pFormat);
+    STDMETHODIMP IsUsingTimeFormat(const GUID * pFormat);
+    STDMETHODIMP IsFormatSupported( const GUID * pFormat);
+    STDMETHODIMP QueryPreferredFormat( __out GUID *pFormat);
+    STDMETHODIMP ConvertTimeFormat(__out LONGLONG * pTarget, 
+                                   __in_opt const GUID * pTargetFormat,
+                                   LONGLONG Source, 
+                                   __in_opt const GUID * pSourceFormat );
+    STDMETHODIMP SetPositions( __inout_opt LONGLONG * pCurrent, DWORD CurrentFlags
+                             , __inout_opt LONGLONG * pStop, DWORD StopFlags );
+
+    STDMETHODIMP GetPositions( __out_opt LONGLONG * pCurrent, __out_opt LONGLONG * pStop );
+    STDMETHODIMP GetCurrentPosition( __out LONGLONG * pCurrent );
+    STDMETHODIMP GetStopPosition( __out LONGLONG * pStop );
+    STDMETHODIMP SetRate( double dRate);
+    STDMETHODIMP GetRate( __out double * pdRate);
+    STDMETHODIMP GetDuration( __out LONGLONG *pDuration);
+    STDMETHODIMP GetAvailable( __out_opt LONGLONG *pEarliest, __out_opt LONGLONG *pLatest );
+    STDMETHODIMP GetPreroll( __out LONGLONG *pllPreroll );
+
+    // IMediaPosition properties
+    STDMETHODIMP get_Duration(__out REFTIME * plength);
+    STDMETHODIMP put_CurrentPosition(REFTIME llTime);
+    STDMETHODIMP get_StopTime(__out REFTIME * pllTime);
+    STDMETHODIMP put_StopTime(REFTIME llTime);
+    STDMETHODIMP get_PrerollTime(__out REFTIME * pllTime);
+    STDMETHODIMP put_PrerollTime(REFTIME llTime);
+    STDMETHODIMP get_Rate(__out double * pdRate);
+    STDMETHODIMP put_Rate(double dRate);
+    STDMETHODIMP get_CurrentPosition(__out REFTIME * pllTime);
+    STDMETHODIMP CanSeekForward(__out LONG *pCanSeekForward);
+    STDMETHODIMP CanSeekBackward(__out LONG *pCanSeekBackward);
+
+private:
+    HRESULT GetSeekingLongLong( HRESULT (__stdcall IMediaSeeking::*pMethod)( LONGLONG * ),
+                                __out LONGLONG * pll );
+};
+
+
+// Adds the ability to return a current position
+
+class CRendererPosPassThru : public CPosPassThru
+{
+    CCritSec m_PositionLock;    // Locks access to our position
+    LONGLONG m_StartMedia;      // Start media time last seen
+    LONGLONG m_EndMedia;        // And likewise the end media
+    BOOL m_bReset;              // Have media times been set
+
+public:
+
+    // Used to help with passing media times through graph
+
+    CRendererPosPassThru(__in_opt LPCTSTR, __in_opt LPUNKNOWN, __inout HRESULT*, IPin *);
+    HRESULT RegisterMediaTime(IMediaSample *pMediaSample);
+    HRESULT RegisterMediaTime(LONGLONG StartTime,LONGLONG EndTime);
+    HRESULT GetMediaTime(__out LONGLONG *pStartTime,__out_opt LONGLONG *pEndTime);
+    HRESULT ResetMediaTime();
+    HRESULT EOS();
+};
+
+STDAPI CreatePosPassThru(
+    __in_opt LPUNKNOWN pAgg,
+    BOOL bRenderer,
+    IPin *pPin,
+    __deref_out IUnknown **ppPassThru
+);
+
+// A class that handles the IDispatch part of IBasicAudio and leaves the
+// properties and methods themselves pure virtual.
+
+class AM_NOVTABLE CBasicAudio : public IBasicAudio, public CUnknown
+{
+    CBaseDispatch m_basedisp;
+
+public:
+
+    CBasicAudio(__in_opt LPCTSTR, __in_opt LPUNKNOWN);
+
+    DECLARE_IUNKNOWN
+
+    // override this to publicise our interfaces
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv);
+
+    /* IDispatch methods */
+    STDMETHODIMP GetTypeInfoCount(__out UINT * pctinfo);
+
+    STDMETHODIMP GetTypeInfo(
+      UINT itinfo,
+      LCID lcid,
+      __deref_out ITypeInfo ** pptinfo);
+
+    STDMETHODIMP GetIDsOfNames(
+      REFIID riid,
+      __in_ecount(cNames) LPOLESTR * rgszNames,
+      UINT cNames,
+      LCID lcid,
+      __out_ecount(cNames) DISPID * rgdispid);
+
+    STDMETHODIMP Invoke(
+      DISPID dispidMember,
+      REFIID riid,
+      LCID lcid,
+      WORD wFlags,
+      __in DISPPARAMS * pdispparams,
+      __out_opt VARIANT * pvarResult,
+      __out_opt EXCEPINFO * pexcepinfo,
+      __out_opt UINT * puArgErr);
+};
+
+
+// A class that handles the IDispatch part of IBasicVideo and leaves the
+// properties and methods themselves pure virtual.
+
+class AM_NOVTABLE CBaseBasicVideo : public IBasicVideo2, public CUnknown
+{
+    CBaseDispatch m_basedisp;
+
+public:
+
+    CBaseBasicVideo(__in_opt LPCTSTR, __in_opt LPUNKNOWN);
+
+    DECLARE_IUNKNOWN
+
+    // override this to publicise our interfaces
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv);
+
+    /* IDispatch methods */
+    STDMETHODIMP GetTypeInfoCount(__out UINT * pctinfo);
+
+    STDMETHODIMP GetTypeInfo(
+      UINT itinfo,
+      LCID lcid,
+      __deref_out ITypeInfo ** pptinfo);
+
+    STDMETHODIMP GetIDsOfNames(
+      REFIID riid,
+      __in_ecount(cNames) LPOLESTR * rgszNames,
+      UINT cNames,
+      LCID lcid,
+      __out_ecount(cNames) DISPID * rgdispid);
+
+    STDMETHODIMP Invoke(
+      DISPID dispidMember,
+      REFIID riid,
+      LCID lcid,
+      WORD wFlags,
+      __in DISPPARAMS * pdispparams,
+      __out_opt VARIANT * pvarResult,
+      __out_opt EXCEPINFO * pexcepinfo,
+      __out_opt UINT * puArgErr);
+
+    STDMETHODIMP GetPreferredAspectRatio(
+      __out long *plAspectX,
+      __out long *plAspectY)
+    {
+        return E_NOTIMPL;
+    }
+};
+
+
+// A class that handles the IDispatch part of IVideoWindow and leaves the
+// properties and methods themselves pure virtual.
+
+class AM_NOVTABLE CBaseVideoWindow : public IVideoWindow, public CUnknown
+{
+    CBaseDispatch m_basedisp;
+
+public:
+
+    CBaseVideoWindow(__in_opt LPCTSTR, __in_opt LPUNKNOWN);
+
+    DECLARE_IUNKNOWN
+
+    // override this to publicise our interfaces
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv);
+
+    /* IDispatch methods */
+    STDMETHODIMP GetTypeInfoCount(__out UINT * pctinfo);
+
+    STDMETHODIMP GetTypeInfo(
+      UINT itinfo,
+      LCID lcid,
+      __deref_out ITypeInfo ** pptinfo);
+
+    STDMETHODIMP GetIDsOfNames(
+      REFIID riid,
+      __in_ecount(cNames) LPOLESTR * rgszNames,
+      UINT cNames,
+      LCID lcid,
+      __out_ecount(cNames) DISPID * rgdispid);
+
+    STDMETHODIMP Invoke(
+      DISPID dispidMember,
+      REFIID riid,
+      LCID lcid,
+      WORD wFlags,
+      __in DISPPARAMS * pdispparams,
+      __out_opt VARIANT * pvarResult,
+      __out_opt EXCEPINFO * pexcepinfo,
+      __out_opt UINT * puArgErr);
+};
+
+
+// abstract class to help source filters with their implementation
+// of IMediaPosition. Derive from this and set the duration (and stop
+// position). Also override NotifyChange to do something when the properties
+// change.
+
+class AM_NOVTABLE CSourcePosition : public CMediaPosition
+{
+
+public:
+    CSourcePosition(__in_opt LPCTSTR, __in_opt LPUNKNOWN, __inout HRESULT*, __in CCritSec *);
+
+    // IMediaPosition methods
+    STDMETHODIMP get_Duration(__out REFTIME * plength);
+    STDMETHODIMP put_CurrentPosition(REFTIME llTime);
+    STDMETHODIMP get_StopTime(__out REFTIME * pllTime);
+    STDMETHODIMP put_StopTime(REFTIME llTime);
+    STDMETHODIMP get_PrerollTime(__out REFTIME * pllTime);
+    STDMETHODIMP put_PrerollTime(REFTIME llTime);
+    STDMETHODIMP get_Rate(__out double * pdRate);
+    STDMETHODIMP put_Rate(double dRate);
+    STDMETHODIMP CanSeekForward(__out LONG *pCanSeekForward);
+    STDMETHODIMP CanSeekBackward(__out LONG *pCanSeekBackward);
+
+    // override if you can return the data you are actually working on
+    STDMETHODIMP get_CurrentPosition(__out REFTIME * pllTime) {
+        return E_NOTIMPL;
+    };
+
+protected:
+
+    // we call this to notify changes. Override to handle them
+    virtual HRESULT ChangeStart() PURE;
+    virtual HRESULT ChangeStop() PURE;
+    virtual HRESULT ChangeRate() PURE;
+
+    COARefTime m_Duration;
+    COARefTime m_Start;
+    COARefTime m_Stop;
+    double m_Rate;
+
+    CCritSec * m_pLock;
+};
+
+class AM_NOVTABLE CSourceSeeking :
+    public IMediaSeeking,
+    public CUnknown
+{
+
+public:
+
+    DECLARE_IUNKNOWN;
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv);
+
+    // IMediaSeeking methods
+
+    STDMETHODIMP IsFormatSupported(const GUID * pFormat);
+    STDMETHODIMP QueryPreferredFormat(__out GUID *pFormat);
+    STDMETHODIMP SetTimeFormat(const GUID * pFormat);
+    STDMETHODIMP IsUsingTimeFormat(const GUID * pFormat);
+    STDMETHODIMP GetTimeFormat(__out GUID *pFormat);
+    STDMETHODIMP GetDuration(__out LONGLONG *pDuration);
+    STDMETHODIMP GetStopPosition(__out LONGLONG *pStop);
+    STDMETHODIMP GetCurrentPosition(__out LONGLONG *pCurrent);
+    STDMETHODIMP GetCapabilities( __out DWORD * pCapabilities );
+    STDMETHODIMP CheckCapabilities( __inout DWORD * pCapabilities );
+    STDMETHODIMP ConvertTimeFormat( __out LONGLONG * pTarget, 
+                                    __in_opt const GUID * pTargetFormat,
+                                    LONGLONG Source, 
+                                    __in_opt const GUID * pSourceFormat );
+
+    STDMETHODIMP SetPositions( __inout_opt LONGLONG * pCurrent,  DWORD CurrentFlags
+			     , __inout_opt LONGLONG * pStop,  DWORD StopFlags );
+
+    STDMETHODIMP GetPositions( __out_opt LONGLONG * pCurrent, __out_opt LONGLONG * pStop );
+
+    STDMETHODIMP GetAvailable( __out_opt LONGLONG * pEarliest, __out_opt LONGLONG * pLatest );
+    STDMETHODIMP SetRate( double dRate);
+    STDMETHODIMP GetRate( __out double * pdRate);
+    STDMETHODIMP GetPreroll(__out LONGLONG *pPreroll);
+
+
+protected:
+
+    // ctor
+    CSourceSeeking(__in_opt LPCTSTR, __in_opt LPUNKNOWN, __inout HRESULT*, __in CCritSec *);
+
+    // we call this to notify changes. Override to handle them
+    virtual HRESULT ChangeStart() PURE;
+    virtual HRESULT ChangeStop() PURE;
+    virtual HRESULT ChangeRate() PURE;
+
+    CRefTime m_rtDuration;      // length of stream
+    CRefTime m_rtStart;         // source will start here
+    CRefTime m_rtStop;          // source will stop here
+    double m_dRateSeeking;
+
+    // seeking capabilities
+    DWORD m_dwSeekingCaps;
+
+    CCritSec * m_pLock;
+};
+
+
+// Base classes supporting Deferred commands.
+
+// Deferred commands are queued by calls to methods on the IQueueCommand
+// interface, exposed by the filtergraph and by some filters. A successful
+// call to one of these methods will return an IDeferredCommand interface
+// representing the queued command.
+//
+// A CDeferredCommand object represents a single deferred command, and exposes
+// the IDeferredCommand interface as well as other methods permitting time
+// checks and actual execution. It contains a reference to the CCommandQueue
+// object on which it is queued.
+//
+// CCommandQueue is a base class providing a queue of CDeferredCommand
+// objects, and methods to add, remove, check status and invoke the queued
+// commands. A CCommandQueue object would be part of an object that
+// implemented IQueueCommand.
+
+class CCmdQueue;
+
+// take a copy of the params and store them. Release any allocated
+// memory in destructor
+
+class CDispParams : public DISPPARAMS
+{
+public:
+    CDispParams(UINT nArgs, __in_ecount(nArgs) VARIANT* pArgs, __inout_opt HRESULT *phr = NULL);
+    ~CDispParams();
+};
+
+
+// CDeferredCommand lifetime is controlled by refcounts. Caller of
+// InvokeAt.. gets a refcounted interface pointer, and the CCmdQueue
+// object also holds a refcount on us. Calling Cancel or Invoke takes
+// us off the CCmdQueue and thus reduces the refcount by 1. Once taken
+// off the queue we cannot be put back on the queue.
+
+class CDeferredCommand
+    : public CUnknown,
+      public IDeferredCommand
+{
+public:
+
+    CDeferredCommand(
+        __inout CCmdQueue * pQ,
+        __in_opt LPUNKNOWN   pUnk,               // aggregation outer unk
+        __inout HRESULT *   phr,
+        __in LPUNKNOWN   pUnkExecutor,       // object that will execute this cmd
+        REFTIME     time,
+        __in GUID*       iid,
+        long        dispidMethod,
+        short       wFlags,
+        long        cArgs,
+        __in_ecount(cArgs) VARIANT*    pDispParams,
+        __out VARIANT*    pvarResult,
+        __out short*      puArgErr,
+        BOOL        bStream
+        );
+
+    DECLARE_IUNKNOWN
+
+    // override this to publicise our interfaces
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __out void **ppv);
+
+    // IDeferredCommand methods
+    STDMETHODIMP Cancel();
+    STDMETHODIMP Confidence(
+                    __out LONG* pConfidence);
+    STDMETHODIMP Postpone(
+                    REFTIME newtime);
+    STDMETHODIMP GetHResult(
+                    __out HRESULT* phrResult);
+
+    // other public methods
+
+    HRESULT Invoke();
+
+    // access methods
+
+    // returns TRUE if streamtime, FALSE if presentation time
+    BOOL IsStreamTime() {
+       return m_bStream;
+    };
+
+    CRefTime GetTime() {
+        return m_time;
+    };
+
+    REFIID GetIID() {
+        return *m_iid;
+    };
+
+    long GetMethod() {
+        return m_dispidMethod;
+    };
+
+    short GetFlags() {
+        return m_wFlags;
+    };
+
+    DISPPARAMS* GetParams() {
+        return &m_DispParams;
+    };
+
+    VARIANT* GetResult() {
+        return m_pvarResult;
+    };
+
+protected:
+
+    CCmdQueue* m_pQueue;
+
+    // pUnk for the interface that we will execute the command on
+    LPUNKNOWN   m_pUnk;
+
+    // stored command data
+    REFERENCE_TIME     m_time;
+    GUID*       m_iid;
+    long        m_dispidMethod;
+    short       m_wFlags;
+    VARIANT*    m_pvarResult;
+    BOOL        m_bStream;
+    CDispParams m_DispParams;
+    DISPID      m_DispId;         //  For get and put
+
+    // we use this for ITypeInfo access
+    CBaseDispatch   m_Dispatch;
+
+    // save retval here
+    HRESULT     m_hrResult;
+};
+
+
+// a list of CDeferredCommand objects. this is a base class providing
+// the basics of access to the list. If you want to use CDeferredCommand
+// objects then your queue needs to be derived from this class.
+
+class AM_NOVTABLE CCmdQueue
+{
+public:
+    CCmdQueue(__inout_opt HRESULT *phr = NULL);
+    virtual ~CCmdQueue();
+
+    // returns a new CDeferredCommand object that will be initialised with
+    // the parameters and will be added to the queue during construction.
+    // returns S_OK if successfully created otherwise an error and
+    // no object has been queued.
+    virtual HRESULT  New(
+        __out CDeferredCommand **ppCmd,
+        __in LPUNKNOWN   pUnk,
+        REFTIME     time,
+        __in GUID*       iid,
+        long        dispidMethod,
+        short       wFlags,
+        long        cArgs,
+        __in_ecount(cArgs) VARIANT*    pDispParams,
+        __out VARIANT*    pvarResult,
+        __out short*      puArgErr,
+        BOOL        bStream
+    );
+
+    // called by the CDeferredCommand object to add and remove itself
+    // from the queue
+    virtual HRESULT Insert(__in CDeferredCommand* pCmd);
+    virtual HRESULT Remove(__in CDeferredCommand* pCmd);
+
+    // Command-Due Checking
+    //
+    // There are two schemes of synchronisation: coarse and accurate. In
+    // coarse mode, you wait till the time arrives and then execute the cmd.
+    // In accurate mode, you wait until you are processing the sample that
+    // will appear at the time, and then execute the command. It's up to the
+    // filter which one it will implement. The filtergraph will always
+    // implement coarse mode for commands queued at the filtergraph.
+    //
+    // If you want coarse sync, you probably want to wait until there is a
+    // command due, and then execute it. You can do this by calling
+    // GetDueCommand. If you have several things to wait for, get the
+    // event handle from GetDueHandle() and when this is signalled then call
+    // GetDueCommand. Stream time will only advance between calls to Run and
+    // EndRun. Note that to avoid an extra thread there is no guarantee that
+    // if the handle is set there will be a command ready. Each time the
+    // event is signalled, call GetDueCommand (probably with a 0 timeout);
+    // This may return E_ABORT.
+    //
+    // If you want accurate sync, you must call GetCommandDueFor, passing
+    // as a parameter the stream time of the samples you are about to process.
+    // This will return:
+    //   -- a stream-time command due at or before that stream time
+    //   -- a presentation-time command due at or before the
+    //      time that stream time will be presented (only between Run
+    //      and EndRun calls, since outside of this, the mapping from
+    //      stream time to presentation time is not known.
+    //   -- any presentation-time command due now.
+    // This means that if you want accurate synchronisation on samples that
+    // might be processed during Paused mode, you need to use
+    // stream-time commands.
+    //
+    // In all cases, commands remain queued until Invoked or Cancelled. The
+    // setting and resetting of the event handle is managed entirely by this
+    // queue object.
+
+    // set the clock used for timing
+    virtual HRESULT SetSyncSource(__in_opt IReferenceClock*);
+
+    // switch to run mode. Streamtime to Presentation time mapping known.
+    virtual HRESULT Run(REFERENCE_TIME tStreamTimeOffset);
+
+    // switch to Stopped or Paused mode. Time mapping not known.
+    virtual HRESULT EndRun();
+
+    // return a pointer to the next due command. Blocks for msTimeout
+    // milliseconds until there is a due command.
+    // Stream-time commands will only become due between Run and Endrun calls.
+    // The command remains queued until invoked or cancelled.
+    // Returns E_ABORT if timeout occurs, otherwise S_OK (or other error).
+    // Returns an AddRef-ed object
+    virtual HRESULT GetDueCommand(__out CDeferredCommand ** ppCmd, long msTimeout);
+
+    // return the event handle that will be signalled whenever
+    // there are deferred commands due for execution (when GetDueCommand
+    // will not block).
+    HANDLE GetDueHandle() {
+        return HANDLE(m_evDue);
+    };
+
+    // return a pointer to a command that will be due for a given time.
+    // Pass in a stream time here. The stream time offset will be passed
+    // in via the Run method.
+    // Commands remain queued until invoked or cancelled.
+    // This method will not block. It will report VFW_E_NOT_FOUND if there
+    // are no commands due yet.
+    // Returns an AddRef-ed object
+    virtual HRESULT GetCommandDueFor(REFERENCE_TIME tStream, __out CDeferredCommand**ppCmd);
+
+    // check if a given time is due (TRUE if it is due yet)
+    BOOL CheckTime(CRefTime time, BOOL bStream) {
+
+        // if no clock, nothing is due!
+        if (!m_pClock) {
+            return FALSE;
+        }
+
+        // stream time
+        if (bStream) {
+
+            // not valid if not running
+            if (!m_bRunning) {
+                return FALSE;
+            }
+            // add on known stream time offset to get presentation time
+            time += m_StreamTimeOffset;
+        }
+
+        CRefTime Now;
+        m_pClock->GetTime((REFERENCE_TIME*)&Now);
+        return (time <= Now);
+    };
+
+protected:
+
+    // protect access to lists etc
+    CCritSec m_Lock;
+
+    // commands queued in presentation time are stored here
+    CGenericList<CDeferredCommand> m_listPresentation;
+
+    // commands queued in stream time are stored here
+    CGenericList<CDeferredCommand> m_listStream;
+
+    // set when any commands are due
+    CAMEvent m_evDue;
+
+    // creates an advise for the earliest time required, if any
+    void SetTimeAdvise(void);
+
+    // advise id from reference clock (0 if no outstanding advise)
+    DWORD_PTR m_dwAdvise;
+
+    // advise time is for this presentation time
+    CRefTime m_tCurrentAdvise;
+
+    // the reference clock we are using (addrefed)
+    IReferenceClock* m_pClock;
+
+    // true when running
+    BOOL m_bRunning;
+
+    // contains stream time offset when m_bRunning is true
+    CRefTime m_StreamTimeOffset;
+};
+
+#endif // __CTLUTIL__

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/ddmm.cpp

@@ -0,0 +1,129 @@
+//------------------------------------------------------------------------------
+// File: DDMM.cpp
+//
+// Desc: DirectShow base classes - implements routines for using DirectDraw
+//       on a multimonitor system.
+//
+// Copyright (c) 1995-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#include <ddraw.h>
+#include "ddmm.h"
+
+/*
+ * FindDeviceCallback
+ */
+typedef struct {
+	LPSTR   szDevice;
+	GUID*   lpGUID;
+	GUID    GUID;
+	BOOL    fFound;
+}   FindDeviceData;
+
+BOOL CALLBACK FindDeviceCallback(__in_opt GUID* lpGUID, __in LPSTR szName, __in LPSTR szDevice, __in LPVOID lParam)
+{
+	FindDeviceData *p = (FindDeviceData*)lParam;
+
+	if (lstrcmpiA(p->szDevice, szDevice) == 0) {
+	    if (lpGUID) {
+		p->GUID = *lpGUID;
+		p->lpGUID = &p->GUID;
+	    } else {
+		p->lpGUID = NULL;
+	    }
+	    p->fFound = TRUE;
+	    return FALSE;
+	}
+	return TRUE;
+}
+
+
+BOOL CALLBACK FindDeviceCallbackEx(__in_opt GUID* lpGUID, __in LPSTR szName, __in LPSTR szDevice, __in LPVOID lParam, HMONITOR hMonitor)
+{
+	FindDeviceData *p = (FindDeviceData*)lParam;
+
+	if (lstrcmpiA(p->szDevice, szDevice) == 0) {
+	    if (lpGUID) {
+		p->GUID = *lpGUID;
+		p->lpGUID = &p->GUID;
+	    } else {
+		p->lpGUID = NULL;
+	    }
+	    p->fFound = TRUE;
+	    return FALSE;
+	}
+	return TRUE;
+}
+
+
+/*
+ * DirectDrawCreateFromDevice
+ *
+ * create a DirectDraw object for a particular device
+ */
+IDirectDraw * DirectDrawCreateFromDevice(__in_opt LPSTR szDevice, PDRAWCREATE DirectDrawCreateP, PDRAWENUM DirectDrawEnumerateP)
+{
+	IDirectDraw*    pdd = NULL;
+	FindDeviceData  find;
+
+	if (szDevice == NULL) {
+		DirectDrawCreateP(NULL, &pdd, NULL);
+		return pdd;
+	}
+
+	find.szDevice = szDevice;
+	find.fFound   = FALSE;
+	DirectDrawEnumerateP(FindDeviceCallback, (LPVOID)&find);
+
+	if (find.fFound)
+	{
+		//
+		// In 4bpp mode the following DDraw call causes a message box to be popped
+		// up by DDraw (!?!).  It's DDraw's fault, but we don't like it.  So we
+		// make sure it doesn't happen.
+		//
+		UINT ErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
+		DirectDrawCreateP(find.lpGUID, &pdd, NULL);
+		SetErrorMode(ErrorMode);
+	}
+
+	return pdd;
+}
+
+
+/*
+ * DirectDrawCreateFromDeviceEx
+ *
+ * create a DirectDraw object for a particular device
+ */
+IDirectDraw * DirectDrawCreateFromDeviceEx(__in_opt LPSTR szDevice, PDRAWCREATE DirectDrawCreateP, LPDIRECTDRAWENUMERATEEXA DirectDrawEnumerateExP)
+{
+	IDirectDraw*    pdd = NULL;
+	FindDeviceData  find;
+
+	if (szDevice == NULL) {
+		DirectDrawCreateP(NULL, &pdd, NULL);
+		return pdd;
+	}
+
+	find.szDevice = szDevice;
+	find.fFound   = FALSE;
+	DirectDrawEnumerateExP(FindDeviceCallbackEx, (LPVOID)&find,
+					DDENUM_ATTACHEDSECONDARYDEVICES);
+
+	if (find.fFound)
+	{
+		//
+		// In 4bpp mode the following DDraw call causes a message box to be popped
+		// up by DDraw (!?!).  It's DDraw's fault, but we don't like it.  So we
+		// make sure it doesn't happen.
+		//
+		UINT ErrorMode = SetErrorMode(SEM_FAILCRITICALERRORS);
+		DirectDrawCreateP(find.lpGUID, &pdd, NULL);
+		SetErrorMode(ErrorMode);
+	}
+
+	return pdd;
+}

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/ddmm.h

@@ -0,0 +1,28 @@
+//------------------------------------------------------------------------------
+// File: DDMM.h
+//
+// Desc: DirectShow base classes - efines routines for using DirectDraw 
+//       on a multimonitor system.
+//
+// Copyright (c) 1995-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifdef __cplusplus
+extern "C" {            /* Assume C declarations for C++ */
+#endif  /* __cplusplus */
+
+// DDRAW.H might not include these
+#ifndef DDENUM_ATTACHEDSECONDARYDEVICES
+#define DDENUM_ATTACHEDSECONDARYDEVICES     0x00000001L
+#endif
+
+typedef HRESULT (*PDRAWCREATE)(IID *,LPDIRECTDRAW *,LPUNKNOWN);
+typedef HRESULT (*PDRAWENUM)(LPDDENUMCALLBACKA, LPVOID);
+
+IDirectDraw * DirectDrawCreateFromDevice(__in_opt LPSTR, PDRAWCREATE, PDRAWENUM);
+IDirectDraw * DirectDrawCreateFromDeviceEx(__in_opt LPSTR, PDRAWCREATE, LPDIRECTDRAWENUMERATEEXA);
+
+#ifdef __cplusplus
+}
+#endif	/* __cplusplus */

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/dllentry.cpp

@@ -0,0 +1,367 @@
+//------------------------------------------------------------------------------
+// File: DlleEntry.cpp
+//
+// Desc: DirectShow base classes - implements classes used to support dll
+//       entry points for COM objects.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#include <initguid.h>
+
+#ifdef DEBUG
+#ifdef UNICODE
+#ifndef _UNICODE
+#define _UNICODE
+#endif // _UNICODE
+#endif // UNICODE
+
+#include <tchar.h>
+#endif // DEBUG
+#include <strsafe.h>
+
+extern CFactoryTemplate g_Templates[];
+extern int g_cTemplates;
+
+HINSTANCE g_hInst;
+DWORD	  g_amPlatform;		// VER_PLATFORM_WIN32_WINDOWS etc... (from GetVersionEx)
+OSVERSIONINFO g_osInfo;
+
+//
+// an instance of this is created by the DLLGetClassObject entrypoint
+// it uses the CFactoryTemplate object it is given to support the
+// IClassFactory interface
+
+class CClassFactory : public IClassFactory, public CBaseObject
+{
+
+private:
+    const CFactoryTemplate *const m_pTemplate;
+
+    ULONG m_cRef;
+
+    static int m_cLocked;
+public:
+    CClassFactory(const CFactoryTemplate *);
+
+    // IUnknown
+    STDMETHODIMP QueryInterface(REFIID riid, __deref_out void ** ppv);
+    STDMETHODIMP_(ULONG)AddRef();
+    STDMETHODIMP_(ULONG)Release();
+
+    // IClassFactory
+    STDMETHODIMP CreateInstance(LPUNKNOWN pUnkOuter, REFIID riid, __deref_out void **pv);
+    STDMETHODIMP LockServer(BOOL fLock);
+
+    // allow DLLGetClassObject to know about global server lock status
+    static BOOL IsLocked() {
+        return (m_cLocked > 0);
+    };
+};
+
+// process-wide dll locked state
+int CClassFactory::m_cLocked = 0;
+
+CClassFactory::CClassFactory(const CFactoryTemplate *pTemplate)
+: CBaseObject(NAME("Class Factory"))
+, m_cRef(0)
+, m_pTemplate(pTemplate)
+{
+}
+
+
+STDMETHODIMP
+CClassFactory::QueryInterface(REFIID riid,__deref_out void **ppv)
+{
+    CheckPointer(ppv,E_POINTER)
+    ValidateReadWritePtr(ppv,sizeof(PVOID));
+    *ppv = NULL;
+
+    // any interface on this object is the object pointer.
+    if ((riid == IID_IUnknown) || (riid == IID_IClassFactory)) {
+        *ppv = (LPVOID) this;
+	// AddRef returned interface pointer
+        ((LPUNKNOWN) *ppv)->AddRef();
+        return NOERROR;
+    }
+
+    return ResultFromScode(E_NOINTERFACE);
+}
+
+
+STDMETHODIMP_(ULONG)
+CClassFactory::AddRef()
+{
+    return ++m_cRef;
+}
+
+STDMETHODIMP_(ULONG)
+CClassFactory::Release()
+{
+    LONG lRef = InterlockedDecrement((volatile LONG *)&m_cRef);
+    if (lRef == 0) {
+        delete this;
+        return 0;
+    } else {
+        return lRef;
+    }
+}
+
+STDMETHODIMP
+CClassFactory::CreateInstance(
+    LPUNKNOWN pUnkOuter,
+    REFIID riid,
+    __deref_out void **pv)
+{
+    CheckPointer(pv,E_POINTER)
+    ValidateReadWritePtr(pv,sizeof(void *));
+    *pv = NULL;
+
+    /* Enforce the normal OLE rules regarding interfaces and delegation */
+
+    if (pUnkOuter != NULL) {
+        if (IsEqualIID(riid,IID_IUnknown) == FALSE) {
+            *pv = NULL;
+            return ResultFromScode(E_NOINTERFACE);
+        }
+    }
+
+    /* Create the new object through the derived class's create function */
+
+    HRESULT hr = NOERROR;
+    CUnknown *pObj = m_pTemplate->CreateInstance(pUnkOuter, &hr);
+
+    if (pObj == NULL) {
+        *pv = NULL;
+	if (SUCCEEDED(hr)) {
+	    hr = E_OUTOFMEMORY;
+	}
+	return hr;
+    }
+
+    /* Delete the object if we got a construction error */
+
+    if (FAILED(hr)) {
+        delete pObj;
+        *pv = NULL;
+        return hr;
+    }
+
+    /* Get a reference counted interface on the object */
+
+    /* We wrap the non-delegating QI with NDAddRef & NDRelease. */
+    /* This protects any outer object from being prematurely    */
+    /* released by an inner object that may have to be created  */
+    /* in order to supply the requested interface.              */
+    pObj->NonDelegatingAddRef();
+    hr = pObj->NonDelegatingQueryInterface(riid, pv);
+    pObj->NonDelegatingRelease();
+    /* Note that if NonDelegatingQueryInterface fails, it will  */
+    /* not increment the ref count, so the NonDelegatingRelease */
+    /* will drop the ref back to zero and the object will "self-*/
+    /* destruct".  Hence we don't need additional tidy-up code  */
+    /* to cope with NonDelegatingQueryInterface failing.        */
+
+    if (SUCCEEDED(hr)) {
+        ASSERT(*pv);
+    }
+
+    return hr;
+}
+
+STDMETHODIMP
+CClassFactory::LockServer(BOOL fLock)
+{
+    if (fLock) {
+        m_cLocked++;
+    } else {
+        m_cLocked--;
+    }
+    return NOERROR;
+}
+
+
+// --- COM entrypoints -----------------------------------------
+
+//called by COM to get the class factory object for a given class
+__control_entrypoint(DllExport) STDAPI
+DllGetClassObject(
+    __in REFCLSID rClsID,
+    __in REFIID riid,
+    __deref_out void **pv)
+{
+    *pv = NULL;
+    if (!(riid == IID_IUnknown) && !(riid == IID_IClassFactory)) {
+            return E_NOINTERFACE;
+    }
+
+    // traverse the array of templates looking for one with this
+    // class id
+    for (int i = 0; i < g_cTemplates; i++) {
+        const CFactoryTemplate * pT = &g_Templates[i];
+        if (pT->IsClassID(rClsID)) {
+
+            // found a template - make a class factory based on this
+            // template
+
+            *pv = (LPVOID) (LPUNKNOWN) new CClassFactory(pT);
+            if (*pv == NULL) {
+                return E_OUTOFMEMORY;
+            }
+            ((LPUNKNOWN)*pv)->AddRef();
+            return NOERROR;
+        }
+    }
+    return CLASS_E_CLASSNOTAVAILABLE;
+}
+
+//
+//  Call any initialization routines
+//
+void
+DllInitClasses(BOOL bLoading)
+{
+    int i;
+
+    // traverse the array of templates calling the init routine
+    // if they have one
+    for (i = 0; i < g_cTemplates; i++) {
+        const CFactoryTemplate * pT = &g_Templates[i];
+        if (pT->m_lpfnInit != NULL) {
+            (*pT->m_lpfnInit)(bLoading, pT->m_ClsID);
+        }
+    }
+
+}
+
+// called by COM to determine if this dll can be unloaded
+// return ok unless there are outstanding objects or a lock requested
+// by IClassFactory::LockServer
+//
+// CClassFactory has a static function that can tell us about the locks,
+// and CCOMObject has a static function that can tell us about the active
+// object count
+STDAPI
+DllCanUnloadNow()
+{
+    DbgLog((LOG_MEMORY,2,TEXT("DLLCanUnloadNow called - IsLocked = %d, Active objects = %d"),
+        CClassFactory::IsLocked(),
+        CBaseObject::ObjectsActive()));
+
+    if (CClassFactory::IsLocked() || CBaseObject::ObjectsActive()) {
+	return S_FALSE;
+    } else {
+        return S_OK;
+    }
+}
+
+
+// --- standard WIN32 entrypoints --------------------------------------
+
+
+extern "C" void __cdecl __security_init_cookie(void);
+extern "C" BOOL WINAPI _DllEntryPoint(HINSTANCE, ULONG, __inout_opt LPVOID);
+#pragma comment(linker, "/merge:.CRT=.rdata")
+
+extern "C"
+DECLSPEC_NOINLINE
+BOOL 
+WINAPI
+DllEntryPoint(
+    HINSTANCE hInstance, 
+    ULONG ulReason, 
+    __inout_opt LPVOID pv
+    )
+{
+    if ( ulReason == DLL_PROCESS_ATTACH ) {
+        // Must happen before any other code is executed.  Thankfully - it's re-entrant
+        __security_init_cookie();
+    }
+    return _DllEntryPoint(hInstance, ulReason, pv);
+}
+
+
+DECLSPEC_NOINLINE
+BOOL 
+WINAPI
+_DllEntryPoint(
+    HINSTANCE hInstance, 
+    ULONG ulReason, 
+    __inout_opt LPVOID pv
+    )
+{
+#ifdef DEBUG
+    extern bool g_fDbgInDllEntryPoint;
+    g_fDbgInDllEntryPoint = true;
+#endif
+
+    switch (ulReason)
+    {
+
+    case DLL_PROCESS_ATTACH:
+        DisableThreadLibraryCalls(hInstance);
+        DbgInitialise(hInstance);
+
+    	{
+    	    // The platform identifier is used to work out whether
+    	    // full unicode support is available or not.  Hence the
+    	    // default will be the lowest common denominator - i.e. N/A
+                g_amPlatform = VER_PLATFORM_WIN32_WINDOWS; // win95 assumed in case GetVersionEx fails
+    
+                g_osInfo.dwOSVersionInfoSize = sizeof(g_osInfo);
+                if (GetVersionEx(&g_osInfo)) {
+            	g_amPlatform = g_osInfo.dwPlatformId;
+    	    } else {
+    		DbgLog((LOG_ERROR, 1, TEXT("Failed to get the OS platform, assuming Win95")));
+    	    }
+    	}
+
+        g_hInst = hInstance;
+        DllInitClasses(TRUE);
+        break;
+
+    case DLL_PROCESS_DETACH:
+        DllInitClasses(FALSE);
+
+#ifdef DEBUG
+        if (CBaseObject::ObjectsActive()) {
+            DbgSetModuleLevel(LOG_MEMORY, 2);
+            TCHAR szInfo[512];
+            extern TCHAR m_ModuleName[];     // Cut down module name
+
+            TCHAR FullName[_MAX_PATH];      // Load the full path and module name
+            TCHAR *pName;                   // Searches from the end for a backslash
+
+            GetModuleFileName(NULL,FullName,_MAX_PATH);
+            pName = _tcsrchr(FullName,'\\');
+            if (pName == NULL) {
+                pName = FullName;
+            } else {
+                pName++;
+            }
+
+            (void)StringCchPrintf(szInfo, NUMELMS(szInfo), TEXT("Executable: %s  Pid %x  Tid %x. "),
+			    pName, GetCurrentProcessId(), GetCurrentThreadId());
+
+            (void)StringCchPrintf(szInfo+lstrlen(szInfo), NUMELMS(szInfo) - lstrlen(szInfo), TEXT("Module %s, %d objects left active!"),
+                     m_ModuleName, CBaseObject::ObjectsActive());
+            DbgAssert(szInfo, TEXT(__FILE__),__LINE__);
+
+	    // If running remotely wait for the Assert to be acknowledged
+	    // before dumping out the object register
+            DbgDumpObjectRegister();
+        }
+        DbgTerminate();
+#endif
+        break;
+    }
+
+#ifdef DEBUG
+    g_fDbgInDllEntryPoint = false;
+#endif
+    return TRUE;
+}
+
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/dllsetup.cpp

@@ -0,0 +1,693 @@
+//------------------------------------------------------------------------------
+// File: DllSetup.cpp
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#include <strsafe.h>
+
+//---------------------------------------------------------------------------
+// defines
+
+#define MAX_KEY_LEN  260
+
+
+//---------------------------------------------------------------------------
+// externally defined functions/variable
+
+extern int g_cTemplates;
+extern CFactoryTemplate g_Templates[];
+
+//---------------------------------------------------------------------------
+//
+// EliminateSubKey
+//
+// Try to enumerate all keys under this one.
+// if we find anything, delete it completely.
+// Otherwise just delete it.
+//
+// note - this was pinched/duplicated from
+// Filgraph\Mapper.cpp - so should it be in
+// a lib somewhere?
+//
+//---------------------------------------------------------------------------
+
+STDAPI
+EliminateSubKey( HKEY hkey, LPCTSTR strSubKey )
+{
+  HKEY hk;
+  if (0 == lstrlen(strSubKey) ) {
+      // defensive approach
+      return E_FAIL;
+  }
+
+  LONG lreturn = RegOpenKeyEx( hkey
+                             , strSubKey
+                             , 0
+                             , MAXIMUM_ALLOWED
+                             , &hk );
+
+  ASSERT(    lreturn == ERROR_SUCCESS
+          || lreturn == ERROR_FILE_NOT_FOUND
+          || lreturn == ERROR_INVALID_HANDLE );
+
+  if( ERROR_SUCCESS == lreturn )
+  {
+    // Keep on enumerating the first (zero-th)
+    // key and deleting that
+
+    for( ; ; )
+    {
+      TCHAR Buffer[MAX_KEY_LEN];
+      DWORD dw = MAX_KEY_LEN;
+      FILETIME ft;
+
+      lreturn = RegEnumKeyEx( hk
+                            , 0
+                            , Buffer
+                            , &dw
+                            , NULL
+                            , NULL
+                            , NULL
+                            , &ft);
+
+      ASSERT(    lreturn == ERROR_SUCCESS
+              || lreturn == ERROR_NO_MORE_ITEMS );
+
+      if( ERROR_SUCCESS == lreturn )
+      {
+        EliminateSubKey(hk, Buffer);
+      }
+      else
+      {
+        break;
+      }
+    }
+
+    RegCloseKey(hk);
+    RegDeleteKey(hkey, strSubKey);
+  }
+
+  return NOERROR;
+}
+
+
+//---------------------------------------------------------------------------
+//
+// AMovieSetupRegisterServer()
+//
+// registers specfied file "szFileName" as server for
+// CLSID "clsServer".  A description is also required.
+// The ThreadingModel and ServerType are optional, as
+// they default to InprocServer32 (i.e. dll) and Both.
+//
+//---------------------------------------------------------------------------
+
+STDAPI
+AMovieSetupRegisterServer( CLSID   clsServer
+                         , LPCWSTR szDescription
+                         , LPCWSTR szFileName
+                         , LPCWSTR szThreadingModel = L"Both"
+                         , LPCWSTR szServerType     = L"InprocServer32" )
+{
+  // temp buffer
+  //
+  TCHAR achTemp[MAX_PATH];
+
+  // convert CLSID uuid to string and write
+  // out subkey as string - CLSID\{}
+  //
+  OLECHAR szCLSID[CHARS_IN_GUID];
+  HRESULT hr = StringFromGUID2( clsServer
+                              , szCLSID
+                              , CHARS_IN_GUID );
+  ASSERT( SUCCEEDED(hr) );
+
+  // create key
+  //
+  HKEY hkey;
+  (void)StringCchPrintf( achTemp, NUMELMS(achTemp), TEXT("CLSID\\%ls"), szCLSID );
+  LONG lreturn = RegCreateKey( HKEY_CLASSES_ROOT
+                             , (LPCTSTR)achTemp
+                             , &hkey              );
+  if( ERROR_SUCCESS != lreturn )
+  {
+    return AmHresultFromWin32(lreturn);
+  }
+
+  // set description string
+  //
+
+  (void)StringCchPrintf( achTemp, NUMELMS(achTemp), TEXT("%ls"), szDescription );
+  lreturn = RegSetValue( hkey
+                       , (LPCTSTR)NULL
+                       , REG_SZ
+                       , achTemp
+                       , sizeof(achTemp) );
+  if( ERROR_SUCCESS != lreturn )
+  {
+    RegCloseKey( hkey );
+    return AmHresultFromWin32(lreturn);
+  }
+
+  // create CLSID\\{"CLSID"}\\"ServerType" key,
+  // using key to CLSID\\{"CLSID"} passed back by
+  // last call to RegCreateKey().
+  //
+  HKEY hsubkey;
+
+  (void)StringCchPrintf( achTemp, NUMELMS(achTemp), TEXT("%ls"), szServerType );
+  lreturn = RegCreateKey( hkey
+                        , achTemp
+                        , &hsubkey     );
+  if( ERROR_SUCCESS != lreturn )
+  {
+    RegCloseKey( hkey );
+    return AmHresultFromWin32(lreturn);
+  }
+
+  // set Server string
+  //
+  (void)StringCchPrintf( achTemp, NUMELMS(achTemp), TEXT("%ls"), szFileName );
+  lreturn = RegSetValue( hsubkey
+                       , (LPCTSTR)NULL
+                       , REG_SZ
+                       , (LPCTSTR)achTemp
+                       , sizeof(TCHAR) * (lstrlen(achTemp)+1) );
+  if( ERROR_SUCCESS != lreturn )
+  {
+    RegCloseKey( hkey );
+    RegCloseKey( hsubkey );
+    return AmHresultFromWin32(lreturn);
+  }
+
+  (void)StringCchPrintf( achTemp, NUMELMS(achTemp), TEXT("%ls"), szThreadingModel );
+  lreturn = RegSetValueEx( hsubkey
+                         , TEXT("ThreadingModel")
+                         , 0L
+                         , REG_SZ
+                         , (CONST BYTE *)achTemp
+                         , sizeof(TCHAR) * (lstrlen(achTemp)+1) );
+
+  // close hkeys
+  //
+  RegCloseKey( hkey );
+  RegCloseKey( hsubkey );
+
+  // and return
+  //
+  return HRESULT_FROM_WIN32(lreturn);
+
+}
+
+
+//---------------------------------------------------------------------------
+//
+// AMovieSetupUnregisterServer()
+//
+// default ActiveMovie dll setup function
+// - to use must be called from an exported
+//   function named DllRegisterServer()
+//
+//---------------------------------------------------------------------------
+
+STDAPI
+AMovieSetupUnregisterServer( CLSID clsServer )
+{
+  // convert CLSID uuid to string and write
+  // out subkey CLSID\{}
+  //
+  OLECHAR szCLSID[CHARS_IN_GUID];
+  HRESULT hr = StringFromGUID2( clsServer
+                              , szCLSID
+                              , CHARS_IN_GUID );
+  ASSERT( SUCCEEDED(hr) );
+
+  TCHAR achBuffer[MAX_KEY_LEN];
+  (void)StringCchPrintf( achBuffer, NUMELMS(achBuffer), TEXT("CLSID\\%ls"), szCLSID );
+
+  // delete subkey
+  //
+
+  hr = EliminateSubKey( HKEY_CLASSES_ROOT, achBuffer );
+  ASSERT( SUCCEEDED(hr) );
+
+  // return
+  //
+  return NOERROR;
+}
+
+
+//---------------------------------------------------------------------------
+//
+// AMovieSetupRegisterFilter through IFilterMapper2
+//
+//---------------------------------------------------------------------------
+
+STDAPI
+AMovieSetupRegisterFilter2( const AMOVIESETUP_FILTER * const psetupdata
+                          , IFilterMapper2 *                 pIFM2
+                          , BOOL                             bRegister  )
+{
+  DbgLog((LOG_TRACE, 3, TEXT("= AMovieSetupRegisterFilter")));
+
+  // check we've got data
+  //
+  if( NULL == psetupdata ) return S_FALSE;
+
+
+  // unregister filter
+  // (as pins are subkeys of filter's CLSID key
+  // they do not need to be removed separately).
+  //
+  DbgLog((LOG_TRACE, 3, TEXT("= = unregister filter")));
+  HRESULT hr = pIFM2->UnregisterFilter(
+      0,                        // default category
+      0,                        // default instance name
+      *psetupdata->clsID );
+
+
+  if( bRegister )
+  {
+    REGFILTER2 rf2;
+    rf2.dwVersion = 1;
+    rf2.dwMerit = psetupdata->dwMerit;
+    rf2.cPins = psetupdata->nPins;
+    rf2.rgPins = psetupdata->lpPin;
+    
+    // register filter
+    //
+    DbgLog((LOG_TRACE, 3, TEXT("= = register filter")));
+    hr = pIFM2->RegisterFilter(*psetupdata->clsID
+                             , psetupdata->strName
+                             , 0 // moniker
+                             , 0 // category
+                             , NULL // instance
+                             , &rf2);
+  }
+
+  // handle one acceptable "error" - that
+  // of filter not being registered!
+  // (couldn't find a suitable #define'd
+  // name for the error!)
+  //
+  if( 0x80070002 == hr)
+    return NOERROR;
+  else
+    return hr;
+}
+
+
+//---------------------------------------------------------------------------
+//
+// RegisterAllServers()
+//
+//---------------------------------------------------------------------------
+
+STDAPI
+RegisterAllServers( LPCWSTR szFileName, BOOL bRegister )
+{
+  HRESULT hr = NOERROR;
+
+  for( int i = 0; i < g_cTemplates; i++ )
+  {
+    // get i'th template
+    //
+    const CFactoryTemplate *pT = &g_Templates[i];
+
+    DbgLog((LOG_TRACE, 2, TEXT("- - register %ls"),
+           (LPCWSTR)pT->m_Name ));
+
+    // register CLSID and InprocServer32
+    //
+    if( bRegister )
+    {
+      hr = AMovieSetupRegisterServer( *(pT->m_ClsID)
+                                    , (LPCWSTR)pT->m_Name
+                                    , szFileName );
+    }
+    else
+    {
+      hr = AMovieSetupUnregisterServer( *(pT->m_ClsID) );
+    }
+
+    // check final error for this pass
+    // and break loop if we failed
+    //
+    if( FAILED(hr) )
+      break;
+  }
+
+  return hr;
+}
+
+
+//---------------------------------------------------------------------------
+//
+// AMovieDllRegisterServer2()
+//
+// default ActiveMovie dll setup function
+// - to use must be called from an exported
+//   function named DllRegisterServer()
+//
+// this function is table driven using the
+// static members of the CFactoryTemplate
+// class defined in the dll.
+//
+// it registers the Dll as the InprocServer32
+// and then calls the IAMovieSetup.Register
+// method.
+//
+//---------------------------------------------------------------------------
+
+STDAPI
+AMovieDllRegisterServer2( BOOL bRegister )
+{
+  HRESULT hr = NOERROR;
+
+  DbgLog((LOG_TRACE, 2, TEXT("AMovieDllRegisterServer2()")));
+
+  // get file name (where g_hInst is the
+  // instance handle of the filter dll)
+  //
+  WCHAR achFileName[MAX_PATH];
+
+  // WIN95 doesn't support GetModuleFileNameW
+  //
+  {
+    char achTemp[MAX_PATH];
+
+    DbgLog((LOG_TRACE, 2, TEXT("- get module file name")));
+
+    // g_hInst handle is set in our dll entry point. Make sure
+    // DllEntryPoint in dllentry.cpp is called
+    ASSERT(g_hInst != 0);
+
+    if( 0 == GetModuleFileNameA( g_hInst
+                              , achTemp
+                              , sizeof(achTemp) ) )
+    {
+      // we've failed!
+      DWORD dwerr = GetLastError();
+      return AmHresultFromWin32(dwerr);
+    }
+
+    MultiByteToWideChar( CP_ACP
+                       , 0L
+                       , achTemp
+                       , lstrlenA(achTemp) + 1
+                       , achFileName
+                       , NUMELMS(achFileName) );
+  }
+
+  //
+  // first registering, register all OLE servers
+  //
+  if( bRegister )
+  {
+    DbgLog((LOG_TRACE, 2, TEXT("- register OLE Servers")));
+    hr = RegisterAllServers( achFileName, TRUE );
+  }
+
+  //
+  // next, register/unregister all filters
+  //
+
+  if( SUCCEEDED(hr) )
+  {
+    // init is ref counted so call just in case
+    // we're being called cold.
+    //
+    DbgLog((LOG_TRACE, 2, TEXT("- CoInitialize")));
+    hr = CoInitialize( (LPVOID)NULL );
+    ASSERT( SUCCEEDED(hr) );
+
+    // get hold of IFilterMapper2
+    //
+    DbgLog((LOG_TRACE, 2, TEXT("- obtain IFilterMapper2")));
+    IFilterMapper2 *pIFM2 = 0;
+    IFilterMapper *pIFM = 0;
+    hr = CoCreateInstance( CLSID_FilterMapper2
+                         , NULL
+                         , CLSCTX_INPROC_SERVER
+                         , IID_IFilterMapper2
+                         , (void **)&pIFM2       );
+    if(FAILED(hr))
+    {
+        DbgLog((LOG_TRACE, 2, TEXT("- trying IFilterMapper instead")));
+
+        hr = CoCreateInstance(
+            CLSID_FilterMapper,
+            NULL,
+            CLSCTX_INPROC_SERVER,
+            IID_IFilterMapper,
+            (void **)&pIFM);
+    }
+    if( SUCCEEDED(hr) )
+    {
+      // scan through array of CFactoryTemplates
+      // registering servers and filters.
+      //
+      DbgLog((LOG_TRACE, 2, TEXT("- register Filters")));
+      for( int i = 0; i < g_cTemplates; i++ )
+      {
+        // get i'th template
+        //
+        const CFactoryTemplate *pT = &g_Templates[i];
+
+        if( NULL != pT->m_pAMovieSetup_Filter )
+        {
+          DbgLog((LOG_TRACE, 2, TEXT("- - register %ls"), (LPCWSTR)pT->m_Name ));
+
+          if(pIFM2)
+          {
+              hr = AMovieSetupRegisterFilter2( pT->m_pAMovieSetup_Filter, pIFM2, bRegister );
+          }
+          else
+          {
+              hr = AMovieSetupRegisterFilter( pT->m_pAMovieSetup_Filter, pIFM, bRegister );
+          }
+        }
+
+        // check final error for this pass
+        // and break loop if we failed
+        //
+        if( FAILED(hr) )
+          break;
+      }
+
+      // release interface
+      //
+      if(pIFM2)
+          pIFM2->Release();
+      else
+          pIFM->Release();
+
+    }
+
+    // and clear up
+    //
+    CoFreeUnusedLibraries();
+    CoUninitialize();
+  }
+
+  //
+  // if unregistering, unregister all OLE servers
+  //
+  if( SUCCEEDED(hr) && !bRegister )
+  {
+    DbgLog((LOG_TRACE, 2, TEXT("- register OLE Servers")));
+    hr = RegisterAllServers( achFileName, FALSE );
+  }
+
+  DbgLog((LOG_TRACE, 2, TEXT("- return %0x"), hr));
+  return hr;
+}
+
+
+//---------------------------------------------------------------------------
+//
+// AMovieDllRegisterServer()
+//
+// default ActiveMovie dll setup function
+// - to use must be called from an exported
+//   function named DllRegisterServer()
+//
+// this function is table driven using the
+// static members of the CFactoryTemplate
+// class defined in the dll.
+//
+// it registers the Dll as the InprocServer32
+// and then calls the IAMovieSetup.Register
+// method.
+//
+//---------------------------------------------------------------------------
+
+
+STDAPI
+AMovieDllRegisterServer( void )
+{
+  HRESULT hr = NOERROR;
+
+  // get file name (where g_hInst is the
+  // instance handle of the filter dll)
+  //
+  WCHAR achFileName[MAX_PATH];
+
+  {
+    // WIN95 doesn't support GetModuleFileNameW
+    //
+    char achTemp[MAX_PATH];
+
+    if( 0 == GetModuleFileNameA( g_hInst
+                              , achTemp
+                              , sizeof(achTemp) ) )
+    {
+      // we've failed!
+      DWORD dwerr = GetLastError();
+      return AmHresultFromWin32(dwerr);
+    }
+
+    MultiByteToWideChar( CP_ACP
+                       , 0L
+                       , achTemp
+                       , lstrlenA(achTemp) + 1
+                       , achFileName
+                       , NUMELMS(achFileName) );
+  }
+
+  // scan through array of CFactoryTemplates
+  // registering servers and filters.
+  //
+  for( int i = 0; i < g_cTemplates; i++ )
+  {
+    // get i'th template
+    //
+    const CFactoryTemplate *pT = &g_Templates[i];
+
+    // register CLSID and InprocServer32
+    //
+    hr = AMovieSetupRegisterServer( *(pT->m_ClsID)
+                                  , (LPCWSTR)pT->m_Name
+                                  , achFileName );
+
+    // instantiate all servers and get hold of
+    // IAMovieSetup, if implemented, and call
+    // IAMovieSetup.Register() method
+    //
+    if( SUCCEEDED(hr) && (NULL != pT->m_lpfnNew) )
+    {
+      // instantiate object
+      //
+      PAMOVIESETUP psetup;
+      hr = CoCreateInstance( *(pT->m_ClsID)
+                           , 0
+                           , CLSCTX_INPROC_SERVER
+                           , IID_IAMovieSetup
+                           , reinterpret_cast<void**>(&psetup) );
+      if( SUCCEEDED(hr) )
+      {
+        hr = psetup->Unregister();
+        if( SUCCEEDED(hr) )
+          hr = psetup->Register();
+        psetup->Release();
+      }
+      else
+      {
+        if(    (E_NOINTERFACE      == hr )
+            || (VFW_E_NEED_OWNER == hr ) )
+          hr = NOERROR;
+      }
+    }
+
+    // check final error for this pass
+    // and break loop if we failed
+    //
+    if( FAILED(hr) )
+      break;
+
+  } // end-for
+
+  return hr;
+}
+
+
+//---------------------------------------------------------------------------
+//
+// AMovieDllUnregisterServer()
+//
+// default ActiveMovie dll uninstall function
+// - to use must be called from an exported
+//   function named DllRegisterServer()
+//
+// this function is table driven using the
+// static members of the CFactoryTemplate
+// class defined in the dll.
+//
+// it calls the IAMovieSetup.Unregister
+// method and then unregisters the Dll
+// as the InprocServer32
+//
+//---------------------------------------------------------------------------
+
+STDAPI
+AMovieDllUnregisterServer()
+{
+  // initialize return code
+  //
+  HRESULT hr = NOERROR;
+
+  // scan through CFactory template and unregister
+  // all OLE servers and filters.
+  //
+  for( int i = g_cTemplates; i--; )
+  {
+    // get i'th template
+    //
+    const CFactoryTemplate *pT = &g_Templates[i];
+
+    // check method exists
+    //
+    if( NULL != pT->m_lpfnNew )
+    {
+      // instantiate object
+      //
+      PAMOVIESETUP psetup;
+      hr = CoCreateInstance( *(pT->m_ClsID)
+                           , 0
+                           , CLSCTX_INPROC_SERVER
+                           , IID_IAMovieSetup
+                           , reinterpret_cast<void**>(&psetup) );
+      if( SUCCEEDED(hr) )
+      {
+        hr = psetup->Unregister();
+        psetup->Release();
+      }
+      else
+      {
+        if(    (E_NOINTERFACE      == hr )
+            || (VFW_E_NEED_OWNER == hr ) )
+           hr = NOERROR;
+      }
+    }
+
+    // unregister CLSID and InprocServer32
+    //
+    if( SUCCEEDED(hr) )
+    {
+      hr = AMovieSetupUnregisterServer( *(pT->m_ClsID) );
+    }
+
+    // check final error for this pass
+    // and break loop if we failed
+    //
+    if( FAILED(hr) )
+      break;
+  }
+
+  return hr;
+}

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/dllsetup.h

@@ -0,0 +1,46 @@
+//------------------------------------------------------------------------------
+// File: DllSetup.h
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+// To be self registering, OLE servers must
+// export functions named DllRegisterServer
+// and DllUnregisterServer.  To allow use of
+// custom and default implementations the
+// defaults are named AMovieDllRegisterServer
+// and AMovieDllUnregisterServer.
+//
+// To the use the default implementation you
+// must provide stub functions.
+//
+// i.e. STDAPI DllRegisterServer()
+//      {
+//        return AMovieDllRegisterServer();
+//      }
+//
+//      STDAPI DllUnregisterServer()
+//      {
+//        return AMovieDllUnregisterServer();
+//      }
+//
+//
+// AMovieDllRegisterServer   calls IAMovieSetup.Register(), and
+// AMovieDllUnregisterServer calls IAMovieSetup.Unregister().
+
+STDAPI AMovieDllRegisterServer2( BOOL );
+STDAPI AMovieDllRegisterServer();
+STDAPI AMovieDllUnregisterServer();
+
+// helper functions
+STDAPI EliminateSubKey( HKEY, LPCTSTR );
+
+
+STDAPI
+AMovieSetupRegisterFilter2( const AMOVIESETUP_FILTER * const psetupdata
+                          , IFilterMapper2 *         pIFM2
+                          , BOOL                             bRegister  );
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/dxmperf.h

@@ -0,0 +1,250 @@
+//------------------------------------------------------------------------------
+// File: DXMPerf.h
+//
+// Desc: Macros for DirectShow performance logging.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef _DXMPERF_H_
+#define _DXMPERF_H_
+
+#include <perfstruct.h>
+#include "perflog.h"
+
+#ifdef _IA64_
+extern "C" unsigned __int64 __getReg( int whichReg );
+#pragma intrinsic(__getReg)
+#endif // _IA64_
+
+
+inline ULONGLONG _RDTSC( void ) {
+#ifdef _X86_
+    LARGE_INTEGER   li;
+    __asm {
+        _emit   0x0F
+        _emit   0x31
+        mov li.LowPart,eax
+        mov li.HighPart,edx
+    }
+    return li.QuadPart;
+
+#if 0 // This isn't tested yet
+
+#elif defined (_IA64_)
+
+#define INL_REGID_APITC 3116
+    return __getReg( INL_REGID_APITC );
+
+#endif // 0
+
+#else // unsupported platform
+    // not implemented on non x86/IA64 platforms
+    return 0;
+#endif // _X86_/_IA64_
+}
+
+#define DXMPERF_VIDEOREND   0x00000001
+#define DXMPERF_AUDIOGLITCH 0x00000002
+//#define GETTIME_BIT         0x00000001
+//#define AUDIOREND_BIT       0x00000004
+//#define FRAMEDROP_BIT       0x00000008
+#define AUDIOBREAK_BIT      0x00000010
+#define DXMPERF_AUDIORECV   0x00000020
+#define DXMPERF_AUDIOSLAVE  0x00000040
+#define DXMPERF_AUDIOBREAK  0x00000080
+
+#define PERFLOG_CTOR( name, iface )
+#define PERFLOG_DTOR( name, iface )
+#define PERFLOG_DELIVER( name, source, dest, sample, pmt )
+#define PERFLOG_RECEIVE( name, source, dest, sample, pmt )
+#define PERFLOG_RUN( name, iface, time, oldstate )
+#define PERFLOG_PAUSE( name, iface, oldstate )
+#define PERFLOG_STOP( name, iface, oldstate )
+#define PERFLOG_JOINGRAPH( name, iface, graph )
+#define PERFLOG_GETBUFFER( allocator, sample )
+#define PERFLOG_RELBUFFER( allocator, sample )
+#define PERFLOG_CONNECT( connector, connectee, status, pmt )
+#define PERFLOG_RXCONNECT( connector, connectee, status, pmt )
+#define PERFLOG_DISCONNECT( disconnector, disconnectee, status )
+
+#define PERFLOG_GETTIME( clock, time )    /*{ \
+    PERFINFO_WMI_GETTIME    perfData; \
+    if (NULL != g_pTraceEvent) { \
+        memset( &perfData, 0, sizeof( perfData ) ); \
+        perfData.header.Size  = sizeof( perfData ); \
+        perfData.header.Flags = WNODE_FLAG_TRACED_GUID; \
+        perfData.header.Guid  = GUID_GETTIME; \
+        perfData.data.cycleCounter = _RDTSC(); \
+        perfData.data.dshowClock   = (ULONGLONG) (time); \
+        if (g_perfMasks[GETTIME_INDEX] & GETTIME_BIT) \
+            (*g_pTraceEvent)( g_traceHandle, (PEVENT_TRACE_HEADER) &perfData ); \
+        } \
+    }*/
+
+#define PERFLOG_AUDIOREND( clocktime, sampletime, psample, bytetime, cbytes ) /*{ \
+    PERFINFO_WMI_AVREND    perfData; \
+    if (NULL != g_pTraceEvent) { \
+        memset( &perfData, 0, sizeof( perfData ) ); \
+        perfData.header.Size  = sizeof( perfData ); \
+        perfData.header.Flags = WNODE_FLAG_TRACED_GUID; \
+        perfData.header.Guid  = GUID_AUDIOREND; \
+        perfData.data.cycleCounter = _RDTSC(); \
+        perfData.data.dshowClock   = (clocktime); \
+        perfData.data.sampleTime   = (sampletime); \
+        if (g_perfMasks[AUDIOREND_INDEX] & AUDIOREND_BIT) \
+            (*g_pTraceEvent)( g_traceHandle, (PEVENT_TRACE_HEADER) &perfData ); \
+        } \
+    }*/
+
+#define PERFLOG_AUDIORECV(StreamTime,SampleStart,SampleStop,Discontinuity,Duration) \
+    if (PerflogEnableFlags & DXMPERF_AUDIORECV) {           \
+        PERFINFO_WMI_AUDIORECV  perfData;                   \
+        memset( &perfData, 0, sizeof( perfData ) );         \
+        perfData.header.Size = sizeof( perfData );          \
+        perfData.header.Flags = WNODE_FLAG_TRACED_GUID;     \
+        perfData.header.Guid        = GUID_AUDIORECV;       \
+        perfData.data.streamTime    = StreamTime;           \
+        perfData.data.sampleStart   = SampleStart;          \
+        perfData.data.sampleStop    = SampleStop;           \
+        perfData.data.discontinuity = Discontinuity;        \
+        perfData.data.hwduration    = Duration;             \
+        PerflogTraceEvent((PEVENT_TRACE_HEADER) &perfData); \
+    }
+
+#define PERFLOG_AUDIOSLAVE(MasterClock,SlaveClock,ErrorAccum,LastHighErrorSeen,LastLowErrorSeen) \
+    if (PerflogEnableFlags & DXMPERF_AUDIOSLAVE) {          \
+        PERFINFO_WMI_AUDIOSLAVE perfData;                   \
+        memset( &perfData, 0, sizeof( perfData ) );         \
+        perfData.header.Size = sizeof( perfData );          \
+        perfData.header.Flags = WNODE_FLAG_TRACED_GUID;     \
+        perfData.header.Guid            = GUID_AUDIOSLAVE;  \
+        perfData.data.masterClock       = MasterClock;      \
+        perfData.data.slaveClock        = SlaveClock;       \
+        perfData.data.errorAccum        = ErrorAccum;       \
+        perfData.data.lastHighErrorSeen = LastHighErrorSeen;\
+        perfData.data.lastLowErrorSeen  = LastLowErrorSeen; \
+        PerflogTraceEvent((PEVENT_TRACE_HEADER) &perfData); \
+    }
+
+#define PERFLOG_AUDIOADDBREAK(IterNextWrite,OffsetNextWrite,IterWrite,OffsetWrite) \
+    if (PerflogEnableFlags & DXMPERF_AUDIOBREAK) {              \
+        PERFINFO_WMI_AUDIOADDBREAK perfData;                    \
+        memset( &perfData, 0, sizeof( perfData ) );             \
+        perfData.header.Size = sizeof( perfData );              \
+        perfData.header.Flags = WNODE_FLAG_TRACED_GUID;         \
+        perfData.header.Guid            = GUID_AUDIOADDBREAK;   \
+        perfData.data.iterNextWrite     = IterNextWrite;        \
+        perfData.data.offsetNextWrite   = OffsetNextWrite;      \
+        perfData.data.iterWrite         = IterWrite;            \
+        perfData.data.offsetWrite       = OffsetWrite;          \
+        PerflogTraceEvent((PEVENT_TRACE_HEADER) &perfData);     \
+    }
+
+#define PERFLOG_VIDEOREND( sampletime, clocktime, psample ) \
+    if (PerflogEnableFlags & DXMPERF_VIDEOREND) { \
+        PERFINFO_WMI_AVREND perfData; \
+        memset( &perfData, 0, sizeof( perfData ) ); \
+        perfData.header.Size = sizeof( perfData ); \
+        perfData.header.Flags = WNODE_FLAG_TRACED_GUID; \
+        perfData.header.Guid = GUID_VIDEOREND; \
+        perfData.data.cycleCounter = _RDTSC(); \
+        perfData.data.dshowClock = (clocktime); \
+        perfData.data.sampleTime = (sampletime); \
+        PerflogTraceEvent ((PEVENT_TRACE_HEADER) &perfData); \
+    }
+
+#define PERFLOG_AUDIOGLITCH( instance, glitchtype, currenttime, previoustime ) \
+    if (PerflogEnableFlags & DXMPERF_AUDIOGLITCH) { \
+        PERFINFO_WMI_AUDIOGLITCH perfData; \
+        memset( &perfData, 0, sizeof( perfData ) ); \
+        perfData.header.Size = sizeof( perfData ); \
+        perfData.header.Flags = WNODE_FLAG_TRACED_GUID; \
+        perfData.header.Guid = GUID_DSOUNDGLITCH; \
+        perfData.data.cycleCounter = _RDTSC(); \
+        perfData.data.glitchType = (glitchtype); \
+        perfData.data.sampleTime = (currenttime); \
+        perfData.data.previousTime = (previoustime); \
+        perfData.data.instanceId = (instance); \
+        PerflogTraceEvent ((PEVENT_TRACE_HEADER) &perfData); \
+    }
+
+#define PERFLOG_FRAMEDROP( sampletime, clocktime, psample, renderer )    /*{ \
+    PERFINFO_WMI_FRAMEDROP    perfData; \
+    if (NULL != g_pTraceEvent) { \
+        memset( &perfData, 0, sizeof( perfData ) ); \
+        perfData.header.Size  = sizeof( perfData ); \
+        perfData.header.Flags = WNODE_FLAG_TRACED_GUID; \
+        perfData.header.Guid  = GUID_FRAMEDROP; \
+        perfData.data.cycleCounter = _RDTSC(); \
+        perfData.data.dshowClock   = (clocktime); \
+        perfData.data.frameTime    = (sampletime); \
+        if (g_perfMasks[FRAMEDROP_INDEX] & FRAMEDROP_BIT) \
+            (*g_pTraceEvent)( g_traceHandle, (PEVENT_TRACE_HEADER) &perfData ); \
+        } \
+    }*/
+
+/*
+#define PERFLOG_AUDIOBREAK( nextwrite, writepos, msecs )    { \
+    PERFINFO_WMI_AUDIOBREAK    perfData; \
+    if (NULL != g_pTraceEvent) { \
+        memset( &perfData, 0, sizeof( perfData ) ); \
+        perfData.header.Size  = sizeof( perfData ); \
+        perfData.header.Flags = WNODE_FLAG_TRACED_GUID; \
+        perfData.header.Guid  = GUID_AUDIOBREAK; \
+        perfData.data.cycleCounter   = _RDTSC(); \
+        perfData.data.dshowClock     = (writepos); \
+        perfData.data.sampleTime     = (nextwrite); \
+        perfData.data.sampleDuration = (msecs); \
+        if (g_perfMasks[AUDIOBREAK_INDEX] & AUDIOBREAK_BIT) \
+            (*g_pTraceEvent)( g_traceHandle, (PEVENT_TRACE_HEADER) &perfData ); \
+        } \
+    }
+*/
+
+#define PERFLOG_AUDIOBREAK( nextwrite, writepos, msecs )  \
+    if (PerflogEnableFlags & AUDIOBREAK_BIT) { \
+        PERFINFO_WMI_AUDIOBREAK    perfData; \
+        memset( &perfData, 0, sizeof( perfData ) ); \
+        perfData.header.Size  = sizeof( perfData ); \
+        perfData.header.Flags = WNODE_FLAG_TRACED_GUID; \
+        perfData.header.Guid  = GUID_AUDIOBREAK; \
+        perfData.data.cycleCounter   = _RDTSC(); \
+        perfData.data.dshowClock     = (writepos); \
+        perfData.data.sampleTime     = (nextwrite); \
+        perfData.data.sampleDuration = (msecs); \
+        PerflogTraceEvent ((PEVENT_TRACE_HEADER) &perfData); \
+    } \
+
+
+inline
+VOID PERFLOG_STREAMTRACE(
+    ULONG Level,
+    ULONG Id,
+    ULONGLONG DShowClock,
+    ULONGLONG Data1,
+    ULONGLONG Data2,
+    ULONGLONG Data3,
+    ULONGLONG Data4
+    )
+{
+    if (Level <= PerflogModuleLevel)
+    {
+        PERFINFO_WMI_STREAMTRACE perfData;
+        memset( &perfData, 0, sizeof( perfData ) );
+        perfData.header.Size = sizeof( perfData );
+        perfData.header.Flags = WNODE_FLAG_TRACED_GUID;
+        perfData.header.Guid = GUID_STREAMTRACE;
+        perfData.data.dshowClock = DShowClock;
+        perfData.data.id = Id;
+        perfData.data.data[0] = Data1;
+        perfData.data.data[1] = Data2;
+        perfData.data.data[2] = Data3;
+        perfData.data.data[3] = Data4;
+        PerflogTraceEvent((PEVENT_TRACE_HEADER) &perfData);
+    }
+}
+
+
+#endif // _DXMPERF_H_

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/fourcc.h

@@ -0,0 +1,101 @@
+//------------------------------------------------------------------------------
+// File: FourCC.h
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+// FOURCCMap
+//
+// provides a mapping between old-style multimedia format DWORDs
+// and new-style GUIDs.
+//
+// A range of 4 billion GUIDs has been allocated to ensure that this
+// mapping can be done straightforwardly one-to-one in both directions.
+//
+// January 95
+
+
+#ifndef __FOURCC__
+#define __FOURCC__
+
+
+// Multimedia format types are marked with DWORDs built from four 8-bit
+// chars and known as FOURCCs. New multimedia AM_MEDIA_TYPE definitions include
+// a subtype GUID. In order to simplify the mapping, GUIDs in the range:
+//    XXXXXXXX-0000-0010-8000-00AA00389B71
+// are reserved for FOURCCs.
+
+class FOURCCMap : public GUID
+{
+
+public:
+    FOURCCMap();
+    FOURCCMap(DWORD Fourcc);
+    FOURCCMap(const GUID *);
+
+
+    DWORD GetFOURCC(void);
+    void SetFOURCC(DWORD fourcc);
+    void SetFOURCC(const GUID *);
+
+private:
+    void InitGUID();
+};
+
+#define GUID_Data2      0
+#define GUID_Data3     0x10
+#define GUID_Data4_1   0xaa000080
+#define GUID_Data4_2   0x719b3800
+
+inline void
+FOURCCMap::InitGUID() {
+    Data2 = GUID_Data2;
+    Data3 = GUID_Data3;
+    ((DWORD *)Data4)[0] = GUID_Data4_1;
+    ((DWORD *)Data4)[1] = GUID_Data4_2;
+}
+
+inline
+FOURCCMap::FOURCCMap() {
+    InitGUID();
+    SetFOURCC( DWORD(0));
+}
+
+inline
+FOURCCMap::FOURCCMap(DWORD fourcc)
+{
+    InitGUID();
+    SetFOURCC(fourcc);
+}
+
+inline
+FOURCCMap::FOURCCMap(const GUID * pGuid)
+{
+    InitGUID();
+    SetFOURCC(pGuid);
+}
+
+inline void
+FOURCCMap::SetFOURCC(const GUID * pGuid)
+{
+    FOURCCMap * p = (FOURCCMap*) pGuid;
+    SetFOURCC(p->GetFOURCC());
+}
+
+inline void
+FOURCCMap::SetFOURCC(DWORD fourcc)
+{
+    Data1 = fourcc;
+}
+
+inline DWORD
+FOURCCMap::GetFOURCC(void)
+{
+    return Data1;
+}
+
+#endif /* __FOURCC__ */
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/measure.h

@@ -0,0 +1,222 @@
+//------------------------------------------------------------------------------
+// File: Measure.h
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+/*
+   The idea is to pepper the source code with interesting measurements and
+   have the last few thousand of these recorded in a circular buffer that
+   can be post-processed to give interesting numbers.
+
+   WHAT THE LOG LOOKS LIKE:
+
+  Time (sec)   Type        Delta  Incident_Name
+    0.055,41  NOTE      -.       Incident Nine  - Another note
+    0.055,42  NOTE      0.000,01 Incident Nine  - Another note
+    0.055,44  NOTE      0.000,02 Incident Nine  - Another note
+    0.055,45  STOP      -.       Incident Eight - Also random
+    0.055,47  START     -.       Incident Seven - Random
+    0.055,49  NOTE      0.000,05 Incident Nine  - Another note
+    ------- <etc.  there is a lot of this> ----------------
+    0.125,60  STOP      0.000,03 Msr_Stop
+    0.125,62  START     -.       Msr_Start
+    0.125,63  START     -.       Incident Two   - Start/Stop
+    0.125,65  STOP      0.000,03 Msr_Start
+    0.125,66  START     -.       Msr_Stop
+    0.125,68  STOP      0.000,05 Incident Two   - Start/Stop
+    0.125,70  STOP      0.000,04 Msr_Stop
+    0.125,72  START     -.       Msr_Start
+    0.125,73  START     -.       Incident Two   - Start/Stop
+    0.125,75  STOP      0.000,03 Msr_Start
+    0.125,77  START     -.       Msr_Stop
+    0.125,78  STOP      0.000,05 Incident Two   - Start/Stop
+    0.125,80  STOP      0.000,03 Msr_Stop
+    0.125,81  NOTE      -.       Incident Three - single Note
+    0.125,83  START     -.       Incident Four  - Start, no stop
+    0.125,85  START     -.       Incident Five  - Single Start/Stop
+    0.125,87  STOP      0.000,02 Incident Five  - Single Start/Stop
+
+Number      Average       StdDev     Smallest      Largest Incident_Name
+    10     0.000,58     0.000,10     0.000,55     0.000,85 Incident One   - Note
+    50     0.000,05     0.000,00     0.000,05     0.000,05 Incident Two   - Start/Stop
+     1     -.           -.           -.           -.       Incident Three - single Note
+     0     -.           -.           -.           -.       Incident Four  - Start, no stop
+     1     0.000,02     -.           0.000,02     0.000,02 Incident Five  - Single Start/Stop
+     0     -.           -.           -.           -.       Incident Six   - zero occurrences
+   100     0.000,25     0.000,12     0.000,02     0.000,62 Incident Seven - Random
+   100     0.000,79     0.000,48     0.000,02     0.001,92 Incident Eight - Also random
+  5895     0.000,01     0.000,01     0.000,01     0.000,56 Incident Nine  - Another note
+    10     0.000,03     0.000,00     0.000,03     0.000,04 Msr_Note
+    50     0.000,03     0.000,00     0.000,03     0.000,04 Msr_Start
+    50     0.000,04     0.000,03     0.000,03     0.000,31 Msr_Stop
+
+  WHAT IT MEANS:
+    The log shows what happened and when.  Each line shows the time at which
+    something happened (see WHAT YOU CODE below) what it was that happened
+    and (if approporate) the time since the corresponding previous event
+    (that's the delta column).
+
+    The statistics show how many times each event occurred, what the average
+    delta time was, also the standard deviation, largest and smalles delta.
+
+   WHAT YOU CODE:
+
+   Before anything else executes: - register your ids
+
+    int id1     = Msr_Register("Incident One   - Note");
+    int id2     = Msr_Register("Incident Two   - Start/Stop");
+    int id3     = Msr_Register("Incident Three - single Note");
+    etc.
+
+   At interesting moments:
+
+       // To measure a repetitive event - e.g. end of bitblt to screen
+       Msr_Note(Id9);             // e.g. "video frame hiting the screen NOW!"
+
+           or
+
+       // To measure an elapsed time e.g. time taken to decode an MPEG B-frame
+       Msr_Start(Id2);            // e.g. "Starting to decode MPEG B-frame"
+         . . .
+       MsrStop(Id2);              //      "Finished MPEG decode"
+
+   At the end:
+
+       HANDLE hFile;
+       hFile = CreateFile("Perf.log", GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, 0, NULL);
+       Msr_Dump(hFile);           // This writes the log out to the file
+       CloseHandle(hFile);
+
+           or
+
+       Msr_Dump(NULL);            // This writes it to DbgLog((LOG_TRACE,0, ... ));
+                                  // but if you are writing it out to the debugger
+                                  // then the times are probably all garbage because
+                                  // the debugger can make things run awfully slow.
+
+    A given id should be used either for start / stop or Note calls.  If Notes
+    are mixed in with Starts and Stops their statistics will be gibberish.
+
+    If you code the calls in upper case i.e. MSR_START(idMunge); then you get
+    macros which will turn into nothing unless PERF is defined.
+
+    You can reset the statistical counts for a given id by calling Reset(Id).
+    They are reset by default at the start.
+    It logs Reset as a special incident, so you can see it in the log.
+
+    The log is a circular buffer in storage (to try to minimise disk I/O).
+    It overwrites the oldest entries once full.  The statistics include ALL
+    incidents since the last Reset, whether still visible in the log or not.
+*/
+
+#ifndef __MEASURE__
+#define __MEASURE__
+
+#ifdef PERF
+#define MSR_INIT() Msr_Init()
+#define MSR_TERMINATE() Msr_Terminate()
+#define MSR_REGISTER(a) Msr_Register(a)
+#define MSR_RESET(a) Msr_Reset(a)
+#define MSR_CONTROL(a) Msr_Control(a)
+#define MSR_START(a) Msr_Start(a)
+#define MSR_STOP(a) Msr_Stop(a)
+#define MSR_NOTE(a) Msr_Note(a)
+#define MSR_INTEGER(a,b) Msr_Integer(a,b)
+#define MSR_DUMP(a) Msr_Dump(a)
+#define MSR_DUMPSTATS(a) Msr_DumpStats(a)
+#else
+#define MSR_INIT() ((void)0)
+#define MSR_TERMINATE() ((void)0)
+#define MSR_REGISTER(a) 0
+#define MSR_RESET(a) ((void)0)
+#define MSR_CONTROL(a) ((void)0)
+#define MSR_START(a) ((void)0)
+#define MSR_STOP(a) ((void)0)
+#define MSR_NOTE(a) ((void)0)
+#define MSR_INTEGER(a,b) ((void)0)
+#define MSR_DUMP(a) ((void)0)
+#define MSR_DUMPSTATS(a) ((void)0)
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+// This must be called first - (called by the DllEntry)
+
+void WINAPI Msr_Init(void);
+
+
+// Call this last to clean up (or just let it fall off the end - who cares?)
+
+void WINAPI Msr_Terminate(void);
+
+
+// Call this to get an Id for an "incident" that you can pass to Start, Stop or Note
+// everything that's logged is called an "incident".
+
+int  WINAPI Msr_Register(__in LPTSTR Incident);
+
+
+// Reset the statistical counts for an incident
+
+void WINAPI Msr_Reset(int Id);
+
+
+// Reset all the counts for all incidents
+#define MSR_RESET_ALL 0
+#define MSR_PAUSE 1
+#define MSR_RUN 2
+
+void WINAPI Msr_Control(int iAction);
+
+
+// log the start of an operation
+
+void WINAPI Msr_Start(int Id);
+
+
+// log the end of an operation
+
+void WINAPI Msr_Stop(int Id);
+
+
+// log a one-off or repetitive operation
+
+void WINAPI Msr_Note(int Id);
+
+
+// log an integer (on which we can see statistics later)
+void WINAPI Msr_Integer(int Id, int n);
+
+
+// print out all the vaialable log (it may have wrapped) and then the statistics.
+// When the log wraps you lose log but the statistics are still complete.
+// hFIle==NULL => use DbgLog
+// otherwise hFile must have come from CreateFile or OpenFile.
+
+void WINAPI Msr_Dump(HANDLE hFile);
+
+
+// just dump the statistics - never mind the log
+
+void WINAPI Msr_DumpStats(HANDLE hFile);
+
+// Type definitions in case you want to declare a pointer to the dump functions
+// (makes it a trifle easier to do dynamic linking
+// i.e. LoadModule, GetProcAddress and call that)
+
+// Typedefs so can declare MSR_DUMPPROC *MsrDumpStats; or whatever
+typedef void WINAPI MSR_DUMPPROC(HANDLE hFile);
+typedef void WINAPI MSR_CONTROLPROC(int iAction);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // __MEASURE__

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/msgthrd.h

@@ -0,0 +1,120 @@
+//------------------------------------------------------------------------------
+// File: MsgThrd.h
+//
+// Desc: DirectShow base classes - provides support for a worker thread 
+//       class to which one can asynchronously post messages.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+// Message class - really just a structure.
+//
+class CMsg {
+public:
+    UINT uMsg;
+    DWORD dwFlags;
+    LPVOID lpParam;
+    CAMEvent *pEvent;
+
+    CMsg(UINT u, DWORD dw, __inout_opt LPVOID lp, __in_opt CAMEvent *pEvnt)
+        : uMsg(u), dwFlags(dw), lpParam(lp), pEvent(pEvnt) {}
+
+    CMsg()
+        : uMsg(0), dwFlags(0L), lpParam(NULL), pEvent(NULL) {}
+};
+
+// This is the actual thread class.  It exports all the usual thread control
+// functions.  The created thread is different from a normal WIN32 thread in
+// that it is prompted to perform particaular tasks by responding to messages
+// posted to its message queue.
+//
+class AM_NOVTABLE CMsgThread {
+private:
+    static DWORD WINAPI DefaultThreadProc(__inout LPVOID lpParam);
+    DWORD               m_ThreadId;
+    HANDLE              m_hThread;
+
+protected:
+
+    // if you want to override GetThreadMsg to block on other things
+    // as well as this queue, you need access to this
+    CGenericList<CMsg>        m_ThreadQueue;
+    CCritSec                  m_Lock;
+    HANDLE                    m_hSem;
+    LONG                      m_lWaiting;
+
+public:
+    CMsgThread()
+        : m_ThreadId(0),
+        m_hThread(NULL),
+        m_lWaiting(0),
+        m_hSem(NULL),
+        // make a list with a cache of 5 items
+        m_ThreadQueue(NAME("MsgThread list"), 5)
+        {
+        }
+
+    ~CMsgThread();
+    // override this if you want to block on other things as well
+    // as the message loop
+    void virtual GetThreadMsg(__out CMsg *msg);
+
+    // override this if you want to do something on thread startup
+    virtual void OnThreadInit() {
+    };
+
+    BOOL CreateThread();
+
+    BOOL WaitForThreadExit(__out LPDWORD lpdwExitCode) {
+        if (m_hThread != NULL) {
+            WaitForSingleObject(m_hThread, INFINITE);
+            return GetExitCodeThread(m_hThread, lpdwExitCode);
+        }
+        return FALSE;
+    }
+
+    DWORD ResumeThread() {
+        return ::ResumeThread(m_hThread);
+    }
+
+    DWORD SuspendThread() {
+        return ::SuspendThread(m_hThread);
+    }
+
+    int GetThreadPriority() {
+        return ::GetThreadPriority(m_hThread);
+    }
+
+    BOOL SetThreadPriority(int nPriority) {
+        return ::SetThreadPriority(m_hThread, nPriority);
+    }
+
+    HANDLE GetThreadHandle() {
+        return m_hThread;
+    }
+
+    DWORD GetThreadId() {
+        return m_ThreadId;
+    }
+
+
+    void PutThreadMsg(UINT uMsg, DWORD dwMsgFlags,
+                      __in_opt LPVOID lpMsgParam, __in_opt CAMEvent *pEvent = NULL) {
+        CAutoLock lck(&m_Lock);
+        CMsg* pMsg = new CMsg(uMsg, dwMsgFlags, lpMsgParam, pEvent);
+        m_ThreadQueue.AddTail(pMsg);
+        if (m_lWaiting != 0) {
+            ReleaseSemaphore(m_hSem, m_lWaiting, 0);
+            m_lWaiting = 0;
+        }
+    }
+
+    // This is the function prototype of the function that the client
+    // supplies.  It is always called on the created thread, never on
+    // the creator thread.
+    //
+    virtual LRESULT ThreadMessageProc(
+        UINT uMsg, DWORD dwFlags, __inout_opt LPVOID lpParam, __in_opt CAMEvent *pEvent) = 0;
+};
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/mtype.cpp

@@ -0,0 +1,478 @@
+//------------------------------------------------------------------------------
+// File: MType.cpp
+//
+// Desc: DirectShow base classes - implements a class that holds and 
+//       manages media type information.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+// helper class that derived pin objects can use to compare media
+// types etc. Has same data members as the struct AM_MEDIA_TYPE defined
+// in the streams IDL file, but also has (non-virtual) functions
+
+#include <streams.h>
+#include <mmreg.h>
+
+CMediaType::~CMediaType(){
+    FreeMediaType(*this);
+}
+
+
+CMediaType::CMediaType()
+{
+    InitMediaType();
+}
+
+
+CMediaType::CMediaType(const GUID * type)
+{
+    InitMediaType();
+    majortype = *type;
+}
+
+
+// copy constructor does a deep copy of the format block
+
+CMediaType::CMediaType(const AM_MEDIA_TYPE& rt, __out_opt HRESULT* phr)
+{
+    HRESULT hr = CopyMediaType(this, &rt);
+    if (FAILED(hr) && (NULL != phr)) {
+        *phr = hr;
+    }
+}
+
+
+CMediaType::CMediaType(const CMediaType& rt, __out_opt HRESULT* phr)
+{
+    HRESULT hr = CopyMediaType(this, &rt);
+    if (FAILED(hr) && (NULL != phr)) {
+        *phr = hr;
+    }
+}
+
+
+// this class inherits publicly from AM_MEDIA_TYPE so the compiler could generate
+// the following assignment operator itself, however it could introduce some
+// memory conflicts and leaks in the process because the structure contains
+// a dynamically allocated block (pbFormat) which it will not copy correctly
+
+CMediaType&
+CMediaType::operator=(const AM_MEDIA_TYPE& rt)
+{
+    Set(rt);
+    return *this;
+}
+
+CMediaType&
+CMediaType::operator=(const CMediaType& rt)
+{
+    *this = (AM_MEDIA_TYPE &) rt;
+    return *this;
+}
+
+BOOL
+CMediaType::operator == (const CMediaType& rt) const
+{
+    // I don't believe we need to check sample size or
+    // temporal compression flags, since I think these must
+    // be represented in the type, subtype and format somehow. They
+    // are pulled out as separate flags so that people who don't understand
+    // the particular format representation can still see them, but
+    // they should duplicate information in the format block.
+
+    return ((IsEqualGUID(majortype,rt.majortype) == TRUE) &&
+        (IsEqualGUID(subtype,rt.subtype) == TRUE) &&
+        (IsEqualGUID(formattype,rt.formattype) == TRUE) &&
+        (cbFormat == rt.cbFormat) &&
+        ( (cbFormat == 0) ||
+          pbFormat != NULL && rt.pbFormat != NULL &&
+          (memcmp(pbFormat, rt.pbFormat, cbFormat) == 0)));
+}
+
+
+BOOL
+CMediaType::operator != (const CMediaType& rt) const
+{
+    /* Check to see if they are equal */
+
+    if (*this == rt) {
+        return FALSE;
+    }
+    return TRUE;
+}
+
+
+HRESULT
+CMediaType::Set(const CMediaType& rt)
+{
+    return Set((AM_MEDIA_TYPE &) rt);
+}
+
+
+HRESULT
+CMediaType::Set(const AM_MEDIA_TYPE& rt)
+{
+    if (&rt != this) {
+        FreeMediaType(*this);
+        HRESULT hr = CopyMediaType(this, &rt);
+        if (FAILED(hr)) {
+            return E_OUTOFMEMORY;
+        }
+    }
+
+    return S_OK;    
+}
+
+
+BOOL
+CMediaType::IsValid() const
+{
+    return (!IsEqualGUID(majortype,GUID_NULL));
+}
+
+
+void
+CMediaType::SetType(const GUID* ptype)
+{
+    majortype = *ptype;
+}
+
+
+void
+CMediaType::SetSubtype(const GUID* ptype)
+{
+    subtype = *ptype;
+}
+
+
+ULONG
+CMediaType::GetSampleSize() const {
+    if (IsFixedSize()) {
+        return lSampleSize;
+    } else {
+        return 0;
+    }
+}
+
+
+void
+CMediaType::SetSampleSize(ULONG sz) {
+    if (sz == 0) {
+        SetVariableSize();
+    } else {
+        bFixedSizeSamples = TRUE;
+        lSampleSize = sz;
+    }
+}
+
+
+void
+CMediaType::SetVariableSize() {
+    bFixedSizeSamples = FALSE;
+}
+
+
+void
+CMediaType::SetTemporalCompression(BOOL bCompressed) {
+    bTemporalCompression = bCompressed;
+}
+
+BOOL
+CMediaType::SetFormat(__in_bcount(cb) BYTE * pformat, ULONG cb)
+{
+    if (NULL == AllocFormatBuffer(cb))
+	return(FALSE);
+
+    ASSERT(pbFormat);
+    memcpy(pbFormat, pformat, cb);
+    return(TRUE);
+}
+
+
+// set the type of the media type format block, this type defines what you
+// will actually find in the format pointer. For example FORMAT_VideoInfo or
+// FORMAT_WaveFormatEx. In the future this may be an interface pointer to a
+// property set. Before sending out media types this should be filled in.
+
+void
+CMediaType::SetFormatType(const GUID *pformattype)
+{
+    formattype = *pformattype;
+}
+
+
+// reset the format buffer
+
+void CMediaType::ResetFormatBuffer()
+{
+    if (cbFormat) {
+        CoTaskMemFree((PVOID)pbFormat);
+    }
+    cbFormat = 0;
+    pbFormat = NULL;
+}
+
+
+// allocate length bytes for the format and return a read/write pointer
+// If we cannot allocate the new block of memory we return NULL leaving
+// the original block of memory untouched (as does ReallocFormatBuffer)
+
+BYTE*
+CMediaType::AllocFormatBuffer(ULONG length)
+{
+    ASSERT(length);
+
+    // do the types have the same buffer size
+
+    if (cbFormat == length) {
+        return pbFormat;
+    }
+
+    // allocate the new format buffer
+
+    BYTE *pNewFormat = (PBYTE)CoTaskMemAlloc(length);
+    if (pNewFormat == NULL) {
+        if (length <= cbFormat) return pbFormat; //reuse the old block anyway.
+        return NULL;
+    }
+
+    // delete the old format
+
+    if (cbFormat != 0) {
+        ASSERT(pbFormat);
+        CoTaskMemFree((PVOID)pbFormat);
+    }
+
+    cbFormat = length;
+    pbFormat = pNewFormat;
+    return pbFormat;
+}
+
+
+// reallocate length bytes for the format and return a read/write pointer
+// to it. We keep as much information as we can given the new buffer size
+// if this fails the original format buffer is left untouched. The caller
+// is responsible for ensuring the size of memory required is non zero
+
+BYTE*
+CMediaType::ReallocFormatBuffer(ULONG length)
+{
+    ASSERT(length);
+
+    // do the types have the same buffer size
+
+    if (cbFormat == length) {
+        return pbFormat;
+    }
+
+    // allocate the new format buffer
+
+    BYTE *pNewFormat = (PBYTE)CoTaskMemAlloc(length);
+    if (pNewFormat == NULL) {
+        if (length <= cbFormat) return pbFormat; //reuse the old block anyway.
+        return NULL;
+    }
+
+    // copy any previous format (or part of if new is smaller)
+    // delete the old format and replace with the new one
+
+    if (cbFormat != 0) {
+        ASSERT(pbFormat);
+        memcpy(pNewFormat,pbFormat,min(length,cbFormat));
+        CoTaskMemFree((PVOID)pbFormat);
+    }
+
+    cbFormat = length;
+    pbFormat = pNewFormat;
+    return pNewFormat;
+}
+
+// initialise a media type structure
+
+void CMediaType::InitMediaType()
+{
+    ZeroMemory((PVOID)this, sizeof(*this));
+    lSampleSize = 1;
+    bFixedSizeSamples = TRUE;
+}
+
+
+// a partially specified media type can be passed to IPin::Connect
+// as a constraint on the media type used in the connection.
+// the type, subtype or format type can be null.
+BOOL
+CMediaType::IsPartiallySpecified(void) const
+{
+    if ((majortype == GUID_NULL) ||
+        (formattype == GUID_NULL)) {
+            return TRUE;
+    } else {
+        return FALSE;
+    }
+}
+
+BOOL
+CMediaType::MatchesPartial(const CMediaType* ppartial) const
+{
+    if ((ppartial->majortype != GUID_NULL) &&
+        (majortype != ppartial->majortype)) {
+            return FALSE;
+    }
+    if ((ppartial->subtype != GUID_NULL) &&
+        (subtype != ppartial->subtype)) {
+            return FALSE;
+    }
+
+    if (ppartial->formattype != GUID_NULL) {
+        // if the format block is specified then it must match exactly
+        if (formattype != ppartial->formattype) {
+            return FALSE;
+        }
+        if (cbFormat != ppartial->cbFormat) {
+            return FALSE;
+        }
+        if ((cbFormat != 0) &&
+            (memcmp(pbFormat, ppartial->pbFormat, cbFormat) != 0)) {
+                return FALSE;
+        }
+    }
+
+    return TRUE;
+
+}
+
+
+
+// general purpose function to delete a heap allocated AM_MEDIA_TYPE structure
+// which is useful when calling IEnumMediaTypes::Next as the interface
+// implementation allocates the structures which you must later delete
+// the format block may also be a pointer to an interface to release
+
+void WINAPI DeleteMediaType(__inout_opt AM_MEDIA_TYPE *pmt)
+{
+    // allow NULL pointers for coding simplicity
+
+    if (pmt == NULL) {
+        return;
+    }
+
+    FreeMediaType(*pmt);
+    CoTaskMemFree((PVOID)pmt);
+}
+
+
+// this also comes in useful when using the IEnumMediaTypes interface so
+// that you can copy a media type, you can do nearly the same by creating
+// a CMediaType object but as soon as it goes out of scope the destructor
+// will delete the memory it allocated (this takes a copy of the memory)
+
+AM_MEDIA_TYPE * WINAPI CreateMediaType(AM_MEDIA_TYPE const *pSrc)
+{
+    ASSERT(pSrc);
+
+    // Allocate a block of memory for the media type
+
+    AM_MEDIA_TYPE *pMediaType =
+        (AM_MEDIA_TYPE *)CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE));
+
+    if (pMediaType == NULL) {
+        return NULL;
+    }
+    // Copy the variable length format block
+
+    HRESULT hr = CopyMediaType(pMediaType,pSrc);
+    if (FAILED(hr)) {
+        CoTaskMemFree((PVOID)pMediaType);
+        return NULL;
+    }
+
+    return pMediaType;
+}
+
+
+//  Copy 1 media type to another
+
+HRESULT WINAPI CopyMediaType(__out AM_MEDIA_TYPE *pmtTarget, const AM_MEDIA_TYPE *pmtSource)
+{
+    //  We'll leak if we copy onto one that already exists - there's one
+    //  case we can check like that - copying to itself.
+    ASSERT(pmtSource != pmtTarget);
+    *pmtTarget = *pmtSource;
+    if (pmtSource->cbFormat != 0) {
+        ASSERT(pmtSource->pbFormat != NULL);
+        pmtTarget->pbFormat = (PBYTE)CoTaskMemAlloc(pmtSource->cbFormat);
+        if (pmtTarget->pbFormat == NULL) {
+            pmtTarget->cbFormat = 0;
+            return E_OUTOFMEMORY;
+        } else {
+            CopyMemory((PVOID)pmtTarget->pbFormat, (PVOID)pmtSource->pbFormat,
+                       pmtTarget->cbFormat);
+        }
+    }
+    if (pmtTarget->pUnk != NULL) {
+        pmtTarget->pUnk->AddRef();
+    }
+
+    return S_OK;
+}
+
+//  Free an existing media type (ie free resources it holds)
+
+void WINAPI FreeMediaType(__inout AM_MEDIA_TYPE& mt)
+{
+    if (mt.cbFormat != 0) {
+        CoTaskMemFree((PVOID)mt.pbFormat);
+
+        // Strictly unnecessary but tidier
+        mt.cbFormat = 0;
+        mt.pbFormat = NULL;
+    }
+    if (mt.pUnk != NULL) {
+        mt.pUnk->Release();
+        mt.pUnk = NULL;
+    }
+}
+
+//  Initialize a media type from a WAVEFORMATEX
+
+STDAPI CreateAudioMediaType(
+    const WAVEFORMATEX *pwfx,
+    __out AM_MEDIA_TYPE *pmt,
+    BOOL bSetFormat
+)
+{
+    pmt->majortype            = MEDIATYPE_Audio;
+    if (pwfx->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
+        pmt->subtype = ((PWAVEFORMATEXTENSIBLE)pwfx)->SubFormat;
+    } else {
+        pmt->subtype              = FOURCCMap(pwfx->wFormatTag);
+    }
+    pmt->formattype           = FORMAT_WaveFormatEx;
+    pmt->bFixedSizeSamples    = TRUE;
+    pmt->bTemporalCompression = FALSE;
+    pmt->lSampleSize          = pwfx->nBlockAlign;
+    pmt->pUnk                 = NULL;
+    if (bSetFormat) {
+        if (pwfx->wFormatTag == WAVE_FORMAT_PCM) {
+            pmt->cbFormat         = sizeof(WAVEFORMATEX);
+        } else {
+            pmt->cbFormat         = sizeof(WAVEFORMATEX) + pwfx->cbSize;
+        }
+        pmt->pbFormat             = (PBYTE)CoTaskMemAlloc(pmt->cbFormat);
+        if (pmt->pbFormat == NULL) {
+            return E_OUTOFMEMORY;
+        }
+        if (pwfx->wFormatTag == WAVE_FORMAT_PCM) {
+            CopyMemory(pmt->pbFormat, pwfx, sizeof(PCMWAVEFORMAT));
+            ((WAVEFORMATEX *)pmt->pbFormat)->cbSize = 0;
+        } else {
+            CopyMemory(pmt->pbFormat, pwfx, pmt->cbFormat);
+        }
+    }
+    return S_OK;
+}
+
+// eliminate very many spurious warnings from MS compiler
+#pragma warning(disable:4514)

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/mtype.h

@@ -0,0 +1,89 @@
+//------------------------------------------------------------------------------
+// File: MtType.h
+//
+// Desc: DirectShow base classes - defines a class that holds and manages
+//       media type information.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __MTYPE__
+#define __MTYPE__
+
+/* Helper class that derived pin objects can use to compare media
+   types etc. Has same data members as the struct AM_MEDIA_TYPE defined
+   in the streams IDL file, but also has (non-virtual) functions */
+
+class CMediaType : public _AMMediaType {
+
+public:
+
+    ~CMediaType();
+    CMediaType();
+    CMediaType(const GUID * majortype);
+    CMediaType(const AM_MEDIA_TYPE&, __out_opt HRESULT* phr = NULL);
+    CMediaType(const CMediaType&, __out_opt HRESULT* phr = NULL);
+
+    CMediaType& operator=(const CMediaType&);
+    CMediaType& operator=(const AM_MEDIA_TYPE&);
+
+    BOOL operator == (const CMediaType&) const;
+    BOOL operator != (const CMediaType&) const;
+
+    HRESULT Set(const CMediaType& rt);
+    HRESULT Set(const AM_MEDIA_TYPE& rt);
+
+    BOOL IsValid() const;
+
+    const GUID *Type() const { return &majortype;} ;
+    void SetType(const GUID *);
+    const GUID *Subtype() const { return &subtype;} ;
+    void SetSubtype(const GUID *);
+
+    BOOL IsFixedSize() const {return bFixedSizeSamples; };
+    BOOL IsTemporalCompressed() const {return bTemporalCompression; };
+    ULONG GetSampleSize() const;
+
+    void SetSampleSize(ULONG sz);
+    void SetVariableSize();
+    void SetTemporalCompression(BOOL bCompressed);
+
+    // read/write pointer to format - can't change length without
+    // calling SetFormat, AllocFormatBuffer or ReallocFormatBuffer
+
+    BYTE*   Format() const {return pbFormat; };
+    ULONG   FormatLength() const { return cbFormat; };
+
+    void SetFormatType(const GUID *);
+    const GUID *FormatType() const {return &formattype; };
+    BOOL SetFormat(__in_bcount(length) BYTE *pFormat, ULONG length);
+    void ResetFormatBuffer();
+    BYTE* AllocFormatBuffer(ULONG length);
+    BYTE* ReallocFormatBuffer(ULONG length);
+
+    void InitMediaType();
+
+    BOOL MatchesPartial(const CMediaType* ppartial) const;
+    BOOL IsPartiallySpecified(void) const;
+};
+
+
+/* General purpose functions to copy and delete a task allocated AM_MEDIA_TYPE
+   structure which is useful when using the IEnumMediaFormats interface as
+   the implementation allocates the structures which you must later delete */
+
+void WINAPI DeleteMediaType(__inout_opt AM_MEDIA_TYPE *pmt);
+AM_MEDIA_TYPE * WINAPI CreateMediaType(AM_MEDIA_TYPE const *pSrc);
+HRESULT WINAPI CopyMediaType(__out AM_MEDIA_TYPE *pmtTarget, const AM_MEDIA_TYPE *pmtSource);
+void WINAPI FreeMediaType(__inout AM_MEDIA_TYPE& mt);
+
+//  Initialize a media type from a WAVEFORMATEX
+
+STDAPI CreateAudioMediaType(
+    const WAVEFORMATEX *pwfx,
+    __out AM_MEDIA_TYPE *pmt,
+    BOOL bSetFormat);
+
+#endif /* __MTYPE__ */
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/outputq.cpp

@@ -0,0 +1,801 @@
+//------------------------------------------------------------------------------
+// File: OutputQ.cpp
+//
+// Desc: DirectShow base classes - implements COutputQueue class used by an
+//       output pin which may sometimes want to queue output samples on a
+//       separate thread and sometimes call Receive() directly on the input
+//       pin.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+
+
+//
+//  COutputQueue Constructor :
+//
+//  Determines if a thread is to be created and creates resources
+//
+//     pInputPin  - the downstream input pin we're queueing samples to
+//
+//     phr        - changed to a failure code if this function fails
+//                  (otherwise unchanges)
+//
+//     bAuto      - Ask pInputPin if it can block in Receive by calling
+//                  its ReceiveCanBlock method and create a thread if
+//                  it can block, otherwise not.
+//
+//     bQueue     - if bAuto == FALSE then we create a thread if and only
+//                  if bQueue == TRUE
+//
+//     lBatchSize - work in batches of lBatchSize
+//
+//     bBatchEact - Use exact batch sizes so don't send until the
+//                  batch is full or SendAnyway() is called
+//
+//     lListSize  - If we create a thread make the list of samples queued
+//                  to the thread have this size cache
+//
+//     dwPriority - If we create a thread set its priority to this
+//
+COutputQueue::COutputQueue(
+             IPin         *pInputPin,          //  Pin to send stuff to
+             __inout HRESULT      *phr,        //  'Return code'
+             BOOL          bAuto,              //  Ask pin if queue or not
+             BOOL          bQueue,             //  Send through queue
+             LONG          lBatchSize,         //  Batch
+             BOOL          bBatchExact,        //  Batch exactly to BatchSize
+             LONG          lListSize,
+             DWORD         dwPriority,
+             bool          bFlushingOpt        // flushing optimization
+            ) : m_lBatchSize(lBatchSize),
+                m_bBatchExact(bBatchExact && (lBatchSize > 1)),
+                m_hThread(NULL),
+                m_hSem(NULL),
+                m_List(NULL),
+                m_pPin(pInputPin),
+                m_ppSamples(NULL),
+                m_lWaiting(0),
+                m_evFlushComplete(FALSE, phr),
+                m_pInputPin(NULL),
+                m_bSendAnyway(FALSE),
+                m_nBatched(0),
+                m_bFlushing(FALSE),
+                m_bFlushed(TRUE),
+                m_bFlushingOpt(bFlushingOpt),
+                m_bTerminate(FALSE),
+                m_hEventPop(NULL),
+                m_hr(S_OK)
+{
+    ASSERT(m_lBatchSize > 0);
+
+
+    if (FAILED(*phr)) {
+        return;
+    }
+
+    //  Check the input pin is OK and cache its IMemInputPin interface
+
+    *phr = pInputPin->QueryInterface(IID_IMemInputPin, (void **)&m_pInputPin);
+    if (FAILED(*phr)) {
+        return;
+    }
+
+    // See if we should ask the downstream pin
+
+    if (bAuto) {
+        HRESULT hr = m_pInputPin->ReceiveCanBlock();
+        if (SUCCEEDED(hr)) {
+            bQueue = hr == S_OK;
+        }
+    }
+
+    //  Create our sample batch
+
+    m_ppSamples = new PMEDIASAMPLE[m_lBatchSize];
+    if (m_ppSamples == NULL) {
+        *phr = E_OUTOFMEMORY;
+        return;
+    }
+
+    //  If we're queueing allocate resources
+
+    if (bQueue) {
+        DbgLog((LOG_TRACE, 2, TEXT("Creating thread for output pin")));
+        m_hSem = CreateSemaphore(NULL, 0, 0x7FFFFFFF, NULL);
+        if (m_hSem == NULL) {
+            DWORD dwError = GetLastError();
+            *phr = AmHresultFromWin32(dwError);
+            return;
+        }
+        m_List = new CSampleList(NAME("Sample Queue List"),
+                                 lListSize,
+                                 FALSE         // No lock
+                                );
+        if (m_List == NULL) {
+            *phr = E_OUTOFMEMORY;
+            return;
+        }
+
+
+        DWORD dwThreadId;
+        m_hThread = CreateThread(NULL,
+                                 0,
+                                 InitialThreadProc,
+                                 (LPVOID)this,
+                                 0,
+                                 &dwThreadId);
+        if (m_hThread == NULL) {
+            DWORD dwError = GetLastError();
+            *phr = AmHresultFromWin32(dwError);
+            return;
+        }
+        SetThreadPriority(m_hThread, dwPriority);
+    } else {
+        DbgLog((LOG_TRACE, 2, TEXT("Calling input pin directly - no thread")));
+    }
+}
+
+//
+//  COutputQueuee Destructor :
+//
+//  Free all resources -
+//
+//      Thread,
+//      Batched samples
+//
+COutputQueue::~COutputQueue()
+{
+    DbgLog((LOG_TRACE, 3, TEXT("COutputQueue::~COutputQueue")));
+    /*  Free our pointer */
+    if (m_pInputPin != NULL) {
+        m_pInputPin->Release();
+    }
+    if (m_hThread != NULL) {
+        {
+            CAutoLock lck(this);
+            m_bTerminate = TRUE;
+            m_hr = S_FALSE;
+            NotifyThread();
+        }
+        DbgWaitForSingleObject(m_hThread);
+        EXECUTE_ASSERT(CloseHandle(m_hThread));
+
+        //  The thread frees the samples when asked to terminate
+
+        ASSERT(m_List->GetCount() == 0);
+        delete m_List;
+    } else {
+        FreeSamples();
+    }
+    if (m_hSem != NULL) {
+        EXECUTE_ASSERT(CloseHandle(m_hSem));
+    }
+    delete [] m_ppSamples;
+}
+
+//
+//  Call the real thread proc as a member function
+//
+DWORD WINAPI COutputQueue::InitialThreadProc(__in LPVOID pv)
+{
+    HRESULT hrCoInit = CAMThread::CoInitializeHelper();
+    
+    COutputQueue *pSampleQueue = (COutputQueue *)pv;
+    DWORD dwReturn = pSampleQueue->ThreadProc();
+
+    if(hrCoInit == S_OK) {
+        CoUninitialize();
+    }
+    
+    return dwReturn;
+}
+
+//
+//  Thread sending the samples downstream :
+//
+//  When there is nothing to do the thread sets m_lWaiting (while
+//  holding the critical section) and then waits for m_hSem to be
+//  set (not holding the critical section)
+//
+DWORD COutputQueue::ThreadProc()
+{
+    while (TRUE) {
+        BOOL          bWait = FALSE;
+        IMediaSample *pSample;
+        LONG          lNumberToSend; // Local copy
+        NewSegmentPacket* ppacket;
+
+        //
+        //  Get a batch of samples and send it if possible
+        //  In any case exit the loop if there is a control action
+        //  requested
+        //
+        {
+            CAutoLock lck(this);
+            while (TRUE) {
+
+                if (m_bTerminate) {
+                    FreeSamples();
+                    return 0;
+                }
+                if (m_bFlushing) {
+                    FreeSamples();
+                    SetEvent(m_evFlushComplete);
+                }
+
+                //  Get a sample off the list
+
+                pSample = m_List->RemoveHead();
+		// inform derived class we took something off the queue
+		if (m_hEventPop) {
+                    //DbgLog((LOG_TRACE,3,TEXT("Queue: Delivered  SET EVENT")));
+		    SetEvent(m_hEventPop);
+		}
+
+                if (pSample != NULL &&
+                    !IsSpecialSample(pSample)) {
+
+                    //  If its just a regular sample just add it to the batch
+                    //  and exit the loop if the batch is full
+
+                    m_ppSamples[m_nBatched++] = pSample;
+                    if (m_nBatched == m_lBatchSize) {
+                        break;
+                    }
+                } else {
+
+                    //  If there was nothing in the queue and there's nothing
+                    //  to send (either because there's nothing or the batch
+                    //  isn't full) then prepare to wait
+
+                    if (pSample == NULL &&
+                        (m_bBatchExact || m_nBatched == 0)) {
+
+                        //  Tell other thread to set the event when there's
+                        //  something do to
+
+                        ASSERT(m_lWaiting == 0);
+                        m_lWaiting++;
+                        bWait      = TRUE;
+                    } else {
+
+                        //  We break out of the loop on SEND_PACKET unless
+                        //  there's nothing to send
+
+                        if (pSample == SEND_PACKET && m_nBatched == 0) {
+                            continue;
+                        }
+
+                        if (pSample == NEW_SEGMENT) {
+                            // now we need the parameters - we are
+                            // guaranteed that the next packet contains them
+                            ppacket = (NewSegmentPacket *) m_List->RemoveHead();
+			    // we took something off the queue
+			    if (m_hEventPop) {
+                    	        //DbgLog((LOG_TRACE,3,TEXT("Queue: Delivered  SET EVENT")));
+		    	        SetEvent(m_hEventPop);
+			    }
+
+                            ASSERT(ppacket);
+                        }
+                        //  EOS_PACKET falls through here and we exit the loop
+                        //  In this way it acts like SEND_PACKET
+                    }
+                    break;
+                }
+            }
+            if (!bWait) {
+                // We look at m_nBatched from the client side so keep
+                // it up to date inside the critical section
+                lNumberToSend = m_nBatched;  // Local copy
+                m_nBatched = 0;
+            }
+        }
+
+        //  Wait for some more data
+
+        if (bWait) {
+            DbgWaitForSingleObject(m_hSem);
+            continue;
+        }
+
+
+
+        //  OK - send it if there's anything to send
+        //  We DON'T check m_bBatchExact here because either we've got
+        //  a full batch or we dropped through because we got
+        //  SEND_PACKET or EOS_PACKET - both of which imply we should
+        //  flush our batch
+
+        if (lNumberToSend != 0) {
+            long nProcessed;
+            if (m_hr == S_OK) {
+                ASSERT(!m_bFlushed);
+                HRESULT hr = m_pInputPin->ReceiveMultiple(m_ppSamples,
+                                                          lNumberToSend,
+                                                          &nProcessed);
+                /*  Don't overwrite a flushing state HRESULT */
+                CAutoLock lck(this);
+                if (m_hr == S_OK) {
+                    m_hr = hr;
+                }
+                ASSERT(!m_bFlushed);
+            }
+            while (lNumberToSend != 0) {
+                m_ppSamples[--lNumberToSend]->Release();
+            }
+            if (m_hr != S_OK) {
+
+                //  In any case wait for more data - S_OK just
+                //  means there wasn't an error
+
+                DbgLog((LOG_ERROR, 2, TEXT("ReceiveMultiple returned %8.8X"),
+                       m_hr));
+            }
+        }
+
+        //  Check for end of stream
+
+        if (pSample == EOS_PACKET) {
+
+            //  We don't send even end of stream on if we've previously
+            //  returned something other than S_OK
+            //  This is because in that case the pin which returned
+            //  something other than S_OK should have either sent
+            //  EndOfStream() or notified the filter graph
+
+            if (m_hr == S_OK) {
+                DbgLog((LOG_TRACE, 2, TEXT("COutputQueue sending EndOfStream()")));
+                HRESULT hr = m_pPin->EndOfStream();
+                if (FAILED(hr)) {
+                    DbgLog((LOG_ERROR, 2, TEXT("COutputQueue got code 0x%8.8X from EndOfStream()")));
+                }
+            }
+        }
+
+        //  Data from a new source
+
+        if (pSample == RESET_PACKET) {
+            m_hr = S_OK;
+            SetEvent(m_evFlushComplete);
+        }
+
+        if (pSample == NEW_SEGMENT) {
+            m_pPin->NewSegment(ppacket->tStart, ppacket->tStop, ppacket->dRate);
+            delete ppacket;
+        }
+    }
+}
+
+//  Send batched stuff anyway
+void COutputQueue::SendAnyway()
+{
+    if (!IsQueued()) {
+
+        //  m_bSendAnyway is a private parameter checked in ReceiveMultiple
+
+        m_bSendAnyway = TRUE;
+        LONG nProcessed;
+        ReceiveMultiple(NULL, 0, &nProcessed);
+        m_bSendAnyway = FALSE;
+
+    } else {
+        CAutoLock lck(this);
+        QueueSample(SEND_PACKET);
+        NotifyThread();
+    }
+}
+
+void
+COutputQueue::NewSegment(
+    REFERENCE_TIME tStart,
+    REFERENCE_TIME tStop,
+    double dRate)
+{
+    if (!IsQueued()) {
+        if (S_OK == m_hr) {
+            if (m_bBatchExact) {
+                SendAnyway();
+            }
+            m_pPin->NewSegment(tStart, tStop, dRate);
+        }
+    } else {
+        if (m_hr == S_OK) {
+            //
+            // we need to queue the new segment to appear in order in the
+            // data, but we need to pass parameters to it. Rather than
+            // take the hit of wrapping every single sample so we can tell
+            // special ones apart, we queue special pointers to indicate
+            // special packets, and we guarantee (by holding the
+            // critical section) that the packet immediately following a
+            // NEW_SEGMENT value is a NewSegmentPacket containing the
+            // parameters.
+            NewSegmentPacket * ppack = new NewSegmentPacket;
+            if (ppack == NULL) {
+                return;
+            }
+            ppack->tStart = tStart;
+            ppack->tStop = tStop;
+            ppack->dRate = dRate;
+
+            CAutoLock lck(this);
+            QueueSample(NEW_SEGMENT);
+            QueueSample( (IMediaSample*) ppack);
+            NotifyThread();
+        }
+    }
+}
+
+
+//
+//  End of Stream is queued to output device
+//
+void COutputQueue::EOS()
+{
+    CAutoLock lck(this);
+    if (!IsQueued()) {
+        if (m_bBatchExact) {
+            SendAnyway();
+        }
+        if (m_hr == S_OK) {
+            DbgLog((LOG_TRACE, 2, TEXT("COutputQueue sending EndOfStream()")));
+            m_bFlushed = FALSE;
+            HRESULT hr = m_pPin->EndOfStream();
+            if (FAILED(hr)) {
+                DbgLog((LOG_ERROR, 2, TEXT("COutputQueue got code 0x%8.8X from EndOfStream()")));
+            }
+        }
+    } else {
+        if (m_hr == S_OK) {
+            m_bFlushed = FALSE;
+            QueueSample(EOS_PACKET);
+            NotifyThread();
+        }
+    }
+}
+
+//
+//  Flush all the samples in the queue
+//
+void COutputQueue::BeginFlush()
+{
+    if (IsQueued()) {
+        {
+            CAutoLock lck(this);
+
+            // block receives -- we assume this is done by the
+            // filter in which we are a component
+
+            // discard all queued data
+
+            m_bFlushing = TRUE;
+
+            //  Make sure we discard all samples from now on
+
+            if (m_hr == S_OK) {
+                m_hr = S_FALSE;
+            }
+
+            // Optimize so we don't keep calling downstream all the time
+
+            if (m_bFlushed && m_bFlushingOpt) {
+                return;
+            }
+
+            // Make sure we really wait for the flush to complete
+            m_evFlushComplete.Reset();
+
+            NotifyThread();
+        }
+
+        // pass this downstream
+
+        m_pPin->BeginFlush();
+    } else {
+        // pass downstream first to avoid deadlocks
+        m_pPin->BeginFlush();
+        CAutoLock lck(this);
+        // discard all queued data
+
+        m_bFlushing = TRUE;
+
+        //  Make sure we discard all samples from now on
+
+        if (m_hr == S_OK) {
+            m_hr = S_FALSE;
+        }
+    }
+
+}
+
+//
+// leave flush mode - pass this downstream
+void COutputQueue::EndFlush()
+{
+    {
+        CAutoLock lck(this);
+        ASSERT(m_bFlushing);
+        if (m_bFlushingOpt && m_bFlushed && IsQueued()) {
+            m_bFlushing = FALSE;
+            m_hr = S_OK;
+            return;
+        }
+    }
+
+    // sync with pushing thread -- done in BeginFlush
+    // ensure no more data to go downstream -- done in BeginFlush
+    //
+    // Because we are synching here there is no need to hold the critical
+    // section (in fact we'd deadlock if we did!)
+
+    if (IsQueued()) {
+        m_evFlushComplete.Wait();
+    } else {
+        FreeSamples();
+    }
+
+    //  Be daring - the caller has guaranteed no samples will arrive
+    //  before EndFlush() returns
+
+    m_bFlushing = FALSE;
+    m_bFlushed  = TRUE;
+
+    // call EndFlush on downstream pins
+
+    m_pPin->EndFlush();
+
+    m_hr = S_OK;
+}
+
+//  COutputQueue::QueueSample
+//
+//  private method to Send a sample to the output queue
+//  The critical section MUST be held when this is called
+
+void COutputQueue::QueueSample(IMediaSample *pSample)
+{
+    if (NULL == m_List->AddTail(pSample)) {
+        if (!IsSpecialSample(pSample)) {
+            pSample->Release();
+        }
+    }
+}
+
+//
+//  COutputQueue::Receive()
+//
+//  Send a single sample by the multiple sample route
+//  (NOTE - this could be optimized if necessary)
+//
+//  On return the sample will have been Release()'d
+//
+
+HRESULT COutputQueue::Receive(IMediaSample *pSample)
+{
+    LONG nProcessed;
+    return ReceiveMultiple(&pSample, 1, &nProcessed);
+}
+
+//
+//  COutputQueue::ReceiveMultiple()
+//
+//  Send a set of samples to the downstream pin
+//
+//      ppSamples           - array of samples
+//      nSamples            - how many
+//      nSamplesProcessed   - How many were processed
+//
+//  On return all samples will have been Release()'d
+//
+
+HRESULT COutputQueue::ReceiveMultiple (
+    __in_ecount(nSamples) IMediaSample **ppSamples,
+    long nSamples,
+    __out long *nSamplesProcessed)
+{
+    if (nSamples < 0) {
+        return E_INVALIDARG;
+    }
+    
+    CAutoLock lck(this);
+    //  Either call directly or queue up the samples
+
+    if (!IsQueued()) {
+
+        //  If we already had a bad return code then just return
+
+        if (S_OK != m_hr) {
+
+            //  If we've never received anything since the last Flush()
+            //  and the sticky return code is not S_OK we must be
+            //  flushing
+            //  ((!A || B) is equivalent to A implies B)
+            ASSERT(!m_bFlushed || m_bFlushing);
+
+            //  We're supposed to Release() them anyway!
+            *nSamplesProcessed = 0;
+            for (int i = 0; i < nSamples; i++) {
+                DbgLog((LOG_TRACE, 3, TEXT("COutputQueue (direct) : Discarding %d samples code 0x%8.8X"),
+                        nSamples, m_hr));
+                ppSamples[i]->Release();
+            }
+
+            return m_hr;
+        }
+        //
+        //  If we're flushing the sticky return code should be S_FALSE
+        //
+        ASSERT(!m_bFlushing);
+        m_bFlushed = FALSE;
+
+        ASSERT(m_nBatched < m_lBatchSize);
+        ASSERT(m_nBatched == 0 || m_bBatchExact);
+
+        //  Loop processing the samples in batches
+
+        LONG iLost = 0;
+        long iDone = 0;
+        for (iDone = 0;
+             iDone < nSamples || (m_nBatched != 0 && m_bSendAnyway);
+            ) {
+
+//pragma message (REMIND("Implement threshold scheme"))
+            ASSERT(m_nBatched < m_lBatchSize);
+            if (iDone < nSamples) {
+                m_ppSamples[m_nBatched++] = ppSamples[iDone++];
+            }
+            if (m_nBatched == m_lBatchSize ||
+                nSamples == 0 && (m_bSendAnyway || !m_bBatchExact)) {
+                LONG nDone;
+                DbgLog((LOG_TRACE, 4, TEXT("Batching %d samples"),
+                       m_nBatched));
+
+                if (m_hr == S_OK) {
+                    m_hr = m_pInputPin->ReceiveMultiple(m_ppSamples,
+                                                        m_nBatched,
+                                                        &nDone);
+                } else {
+                    nDone = 0;
+                }
+                iLost += m_nBatched - nDone;
+                for (LONG i = 0; i < m_nBatched; i++) {
+                    m_ppSamples[i]->Release();
+                }
+                m_nBatched = 0;
+            }
+        }
+        *nSamplesProcessed = iDone - iLost;
+        if (*nSamplesProcessed < 0) {
+            *nSamplesProcessed = 0;
+        }
+        return m_hr;
+    } else {
+        /*  We're sending to our thread */
+
+        if (m_hr != S_OK) {
+            *nSamplesProcessed = 0;
+            DbgLog((LOG_TRACE, 3, TEXT("COutputQueue (queued) : Discarding %d samples code 0x%8.8X"),
+                    nSamples, m_hr));
+            for (int i = 0; i < nSamples; i++) {
+                ppSamples[i]->Release();
+            }
+            return m_hr;
+        }
+        m_bFlushed = FALSE;
+        for (long i = 0; i < nSamples; i++) {
+            QueueSample(ppSamples[i]);
+        }
+        *nSamplesProcessed = nSamples;
+        if (!m_bBatchExact ||
+            m_nBatched + m_List->GetCount() >= m_lBatchSize) {
+            NotifyThread();
+        }
+        return S_OK;
+    }
+}
+
+//  Get ready for new data - cancels sticky m_hr
+void COutputQueue::Reset()
+{
+    if (!IsQueued()) {
+        m_hr = S_OK;
+    } else {
+        {
+            CAutoLock lck(this);
+            QueueSample(RESET_PACKET);
+            NotifyThread();
+        }
+        m_evFlushComplete.Wait();
+    }
+}
+
+//  Remove and Release() all queued and Batched samples
+void COutputQueue::FreeSamples()
+{
+    CAutoLock lck(this);
+    if (IsQueued()) {
+        while (TRUE) {
+            IMediaSample *pSample = m_List->RemoveHead();
+	    // inform derived class we took something off the queue
+	    if (m_hEventPop) {
+                //DbgLog((LOG_TRACE,3,TEXT("Queue: Delivered  SET EVENT")));
+	        SetEvent(m_hEventPop);
+	    }
+
+            if (pSample == NULL) {
+                break;
+            }
+            if (!IsSpecialSample(pSample)) {
+                pSample->Release();
+            } else {
+                if (pSample == NEW_SEGMENT) {
+                    //  Free NEW_SEGMENT packet
+                    NewSegmentPacket *ppacket =
+                        (NewSegmentPacket *) m_List->RemoveHead();
+		    // inform derived class we took something off the queue
+		    if (m_hEventPop) {
+                        //DbgLog((LOG_TRACE,3,TEXT("Queue: Delivered  SET EVENT")));
+		        SetEvent(m_hEventPop);
+		    }
+
+                    ASSERT(ppacket != NULL);
+                    delete ppacket;
+                }
+            }
+        }
+    }
+    for (int i = 0; i < m_nBatched; i++) {
+        m_ppSamples[i]->Release();
+    }
+    m_nBatched = 0;
+}
+
+//  Notify the thread if there is something to do
+//
+//  The critical section MUST be held when this is called
+void COutputQueue::NotifyThread()
+{
+    //  Optimize - no need to signal if it's not waiting
+    ASSERT(IsQueued());
+    if (m_lWaiting) {
+        ReleaseSemaphore(m_hSem, m_lWaiting, NULL);
+        m_lWaiting = 0;
+    }
+}
+
+//  See if there's any work to do
+//  Returns
+//      TRUE  if there is nothing on the queue and nothing in the batch
+//            and all data has been sent
+//      FALSE otherwise
+//
+BOOL COutputQueue::IsIdle()
+{
+    CAutoLock lck(this);
+
+    //  We're idle if
+    //      there is no thread (!IsQueued()) OR
+    //      the thread is waiting for more work  (m_lWaiting != 0)
+    //  AND
+    //      there's nothing in the current batch (m_nBatched == 0)
+
+    if (IsQueued() && m_lWaiting == 0 || m_nBatched != 0) {
+        return FALSE;
+    } else {
+
+        //  If we're idle it shouldn't be possible for there
+        //  to be anything on the work queue
+
+        ASSERT(!IsQueued() || m_List->GetCount() == 0);
+        return TRUE;
+    }
+}
+
+
+void COutputQueue::SetPopEvent(HANDLE hEvent)
+{
+    m_hEventPop = hEvent;
+}

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/outputq.h

@@ -0,0 +1,137 @@
+//------------------------------------------------------------------------------
+// File: OutputQ.h
+//
+// Desc: DirectShow base classes -  defines the COutputQueue class, which
+//       makes a queue of samples and sends them to an output pin.  The 
+//       class will optionally send the samples to the pin directly.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+typedef CGenericList<IMediaSample> CSampleList;
+
+class COutputQueue : public CCritSec
+{
+public:
+    //  Constructor
+    COutputQueue(IPin      *pInputPin,          //  Pin to send stuff to
+                 __inout HRESULT *phr,          //  'Return code'
+                 BOOL       bAuto = TRUE,       //  Ask pin if blocks
+                 BOOL       bQueue = TRUE,      //  Send through queue (ignored if
+                                                //  bAuto set)
+                 LONG       lBatchSize = 1,     //  Batch
+                 BOOL       bBatchExact = FALSE,//  Batch exactly to BatchSize
+                 LONG       lListSize =         //  Likely number in the list
+                                DEFAULTCACHE,
+                 DWORD      dwPriority =        //  Priority of thread to create
+                                THREAD_PRIORITY_NORMAL,
+                 bool       bFlushingOpt = false // flushing optimization
+                );
+    ~COutputQueue();
+
+    // enter flush state - discard all data
+    void BeginFlush();      // Begin flushing samples
+
+    // re-enable receives (pass this downstream)
+    void EndFlush();        // Complete flush of samples - downstream
+                            // pin guaranteed not to block at this stage
+
+    void EOS();             // Call this on End of stream
+
+    void SendAnyway();      // Send batched samples anyway (if bBatchExact set)
+
+    void NewSegment(
+            REFERENCE_TIME tStart,
+            REFERENCE_TIME tStop,
+            double dRate);
+
+    HRESULT Receive(IMediaSample *pSample);
+
+    // do something with these media samples
+    HRESULT ReceiveMultiple (
+        __in_ecount(nSamples) IMediaSample **pSamples,
+        long nSamples,
+        __out long *nSamplesProcessed);
+
+    void Reset();           // Reset m_hr ready for more data
+
+    //  See if its idle or not
+    BOOL IsIdle();
+
+    // give the class an event to fire after everything removed from the queue
+    void SetPopEvent(HANDLE hEvent);
+
+protected:
+    static DWORD WINAPI InitialThreadProc(__in LPVOID pv);
+    DWORD ThreadProc();
+    BOOL  IsQueued()
+    {
+        return m_List != NULL;
+    };
+
+    //  The critical section MUST be held when this is called
+    void QueueSample(IMediaSample *pSample);
+
+    BOOL IsSpecialSample(IMediaSample *pSample)
+    {
+        return (DWORD_PTR)pSample > (DWORD_PTR)(LONG_PTR)(-16);
+    };
+
+    //  Remove and Release() batched and queued samples
+    void FreeSamples();
+
+    //  Notify the thread there is something to do
+    void NotifyThread();
+
+
+protected:
+    //  Queue 'messages'
+    #define SEND_PACKET      ((IMediaSample *)(LONG_PTR)(-2))  // Send batch
+    #define EOS_PACKET       ((IMediaSample *)(LONG_PTR)(-3))  // End of stream
+    #define RESET_PACKET     ((IMediaSample *)(LONG_PTR)(-4))  // Reset m_hr
+    #define NEW_SEGMENT      ((IMediaSample *)(LONG_PTR)(-5))  // send NewSegment
+
+    // new segment packet is always followed by one of these
+    struct NewSegmentPacket {
+        REFERENCE_TIME tStart;
+        REFERENCE_TIME tStop;
+        double dRate;
+    };
+
+    // Remember input stuff
+    IPin          * const m_pPin;
+    IMemInputPin  *       m_pInputPin;
+    BOOL            const m_bBatchExact;
+    LONG            const m_lBatchSize;
+
+    CSampleList   *       m_List;
+    HANDLE                m_hSem;
+    CAMEvent                m_evFlushComplete;
+    HANDLE                m_hThread;
+    __field_ecount_opt(m_lBatchSize) IMediaSample  **      m_ppSamples;
+    __range(0, m_lBatchSize)         LONG                  m_nBatched;
+
+    //  Wait optimization
+    LONG                  m_lWaiting;
+    //  Flush synchronization
+    BOOL                  m_bFlushing;
+
+    // flushing optimization. some downstream filters have trouble
+    // with the queue's flushing optimization. other rely on it
+    BOOL                  m_bFlushed;
+    bool                  m_bFlushingOpt;
+
+    //  Terminate now
+    BOOL                  m_bTerminate;
+
+    //  Send anyway flag for batching
+    BOOL                  m_bSendAnyway;
+
+    //  Deferred 'return code'
+    HRESULT volatile         m_hr;
+
+    // an event that can be fired after every deliver
+    HANDLE m_hEventPop;
+};
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/perflog.cpp

@@ -0,0 +1,347 @@
+//------------------------------------------------------------------------------
+// File: perflog.cpp
+//
+// Desc: Macros for DirectShow performance logging.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+#pragma warning (disable:4201)
+
+#include <streams.h>
+#include <windows.h>
+#include <tchar.h>
+#include <winperf.h>
+#include <wmistr.h>
+#include <evntrace.h>
+#include <strsafe.h>
+#include "perflog.h"
+
+//
+// Local function prototypes.
+//
+
+ULONG
+WINAPI
+PerflogCallback (
+    WMIDPREQUESTCODE RequestCode,
+    __in PVOID Context,
+    __out ULONG* BufferSize,
+    __in PVOID Buffer
+    );
+
+//
+// Event tracing function pointers.
+// We have to do this to run on down-level platforms.
+//
+
+#ifdef UNICODE
+
+ULONG
+(__stdcall * _RegisterTraceGuids) (
+    __in IN WMIDPREQUEST RequestAddress,
+    __in IN PVOID RequestContext,
+    IN LPCGUID ControlGuid,
+    IN ULONG GuidCount,
+    __in IN PTRACE_GUID_REGISTRATION TraceGuidReg,
+    IN LPCWSTR MofImagePath,
+    IN LPCWSTR MofResourceName,
+    OUT PTRACEHANDLE RegistrationHandle
+    );
+
+#define REGISTERTRACEGUIDS_NAME "RegisterTraceGuidsW"
+
+#else
+
+ULONG
+(__stdcall * _RegisterTraceGuids) (
+    __in IN WMIDPREQUEST RequestAddress,
+    __in IN PVOID RequestContext,
+    IN LPCGUID ControlGuid,
+    IN ULONG GuidCount,
+    __in IN PTRACE_GUID_REGISTRATION TraceGuidReg,
+    IN LPCSTR MofImagePath,
+    IN LPCSTR MofResourceName,
+    __out OUT PTRACEHANDLE RegistrationHandle
+    );
+
+#define REGISTERTRACEGUIDS_NAME "RegisterTraceGuidsA"
+
+#endif
+
+ULONG
+(__stdcall * _UnregisterTraceGuids) (
+    TRACEHANDLE RegistrationHandle
+    );
+
+TRACEHANDLE
+(__stdcall * _GetTraceLoggerHandle) (
+    __in PVOID Buffer
+    );
+
+UCHAR
+(__stdcall * _GetTraceEnableLevel) (
+    TRACEHANDLE TraceHandle
+    );
+
+ULONG
+(__stdcall * _GetTraceEnableFlags) (
+    TRACEHANDLE TraceHandle
+    );
+
+ULONG
+(__stdcall * _TraceEvent) (
+    TRACEHANDLE TraceHandle,
+    __in PEVENT_TRACE_HEADER EventTrace
+    );
+
+HINSTANCE _Advapi32;
+
+//
+// Global variables.
+//
+
+BOOL EventTracingAvailable=FALSE;
+ULONG PerflogEnableFlags;
+UCHAR PerflogEnableLevel;
+ULONG PerflogModuleLevel = 0;
+void (*OnStateChanged)(void);
+TRACEHANDLE PerflogTraceHandle=NULL;
+TRACEHANDLE PerflogRegHandle;
+
+// The Win32 wsprintf() function writes a maximum of 1024 characters to it's output buffer.
+// See the documentation for wsprintf()'s lpOut parameter for more information.
+const INT iDEBUGINFO = 1024; // Used to format strings
+
+//
+// This routine initializes performance logging.
+// It should be called from DllMain().
+//
+
+
+VOID
+PerflogReadModuleLevel(
+    HINSTANCE hInstance
+    )
+{
+    LONG lReturn;                   // Create key return value
+    TCHAR szInfo[iDEBUGINFO];       // Constructs key names
+    TCHAR szFullName[iDEBUGINFO];   // Load the full path and module name
+    HKEY hModuleKey;                // Module key handle
+    LPTSTR pName;                   // Searches from the end for a backslash
+    DWORD dwKeySize, dwKeyType, dwKeyValue;
+
+    DWORD dwSize = GetModuleFileName(
+        (hInstance ? hInstance : GetModuleHandle( NULL )),
+        szFullName,
+        iDEBUGINFO );
+
+    if (0 == dwSize || iDEBUGINFO == dwSize) {
+        return;
+    }
+
+    pName = _tcsrchr(szFullName,'\\');
+    if (pName == NULL) {
+        pName = szFullName;
+    } else {
+        pName++;
+    }
+
+    /* Construct the base key name */
+    (void)StringCchPrintf(szInfo,NUMELMS(szInfo),TEXT("SOFTWARE\\Debug\\%s"),pName);
+
+    /* Open the key for this module */
+    lReturn =
+        RegOpenKeyEx(
+            HKEY_LOCAL_MACHINE,   // Handle of an open key
+            szInfo,               // Address of subkey name
+            (DWORD) 0,            // Reserved value
+            KEY_QUERY_VALUE,      // Desired security access
+            &hModuleKey );        // Opened handle buffer
+
+    if (lReturn != ERROR_SUCCESS) {
+        return;
+    }
+
+    dwKeySize = sizeof(DWORD);
+    lReturn = RegQueryValueEx(
+        hModuleKey,                 // Handle to an open key
+        TEXT("PERFLOG"),
+        NULL,                       // Reserved field
+        &dwKeyType,                 // Returns the field type
+        (LPBYTE) &dwKeyValue,       // Returns the field's value
+        &dwKeySize );               // Number of bytes transferred
+
+    if ((lReturn == ERROR_SUCCESS) && (dwKeyType == REG_DWORD))
+    {
+        PerflogModuleLevel = dwKeyValue;
+    }
+
+    RegCloseKey(hModuleKey);
+}
+
+BOOL PerflogInitIfEnabled(
+    IN HINSTANCE hInstance,
+    __in IN PPERFLOG_LOGGING_PARAMS LogParams
+    )
+{
+    PerflogReadModuleLevel( hInstance );
+    if (PerflogModuleLevel)
+    {
+        return PerflogInitialize( LogParams );
+    }
+    else
+    {
+        return FALSE;
+    }
+}
+
+BOOL
+PerflogInitialize (
+    __in IN PPERFLOG_LOGGING_PARAMS LogParams
+    )
+{
+    ULONG status;
+
+    //
+    // If we're running on a recent-enough platform, this will get
+    // pointers to the event tracing routines.
+    //
+
+    _Advapi32 = GetModuleHandle (_T("ADVAPI32.DLL"));
+    if (_Advapi32 == NULL) {
+        return FALSE;
+    }
+
+    *((FARPROC*) &_RegisterTraceGuids) = GetProcAddress (_Advapi32, REGISTERTRACEGUIDS_NAME);
+    *((FARPROC*) &_UnregisterTraceGuids) = GetProcAddress (_Advapi32, "UnregisterTraceGuids");
+    *((FARPROC*) &_GetTraceLoggerHandle) = GetProcAddress (_Advapi32, "GetTraceLoggerHandle");
+    *((FARPROC*) &_GetTraceEnableLevel) = GetProcAddress (_Advapi32, "GetTraceEnableLevel");
+    *((FARPROC*) &_GetTraceEnableFlags) = GetProcAddress (_Advapi32, "GetTraceEnableFlags");
+    *((FARPROC*) &_TraceEvent) = GetProcAddress (_Advapi32, "TraceEvent");
+
+    if (_RegisterTraceGuids == NULL ||
+        _UnregisterTraceGuids == NULL ||
+        _GetTraceEnableLevel == NULL ||
+        _GetTraceEnableFlags == NULL ||
+        _TraceEvent == NULL) {
+
+        return FALSE;
+    }
+
+    EventTracingAvailable = TRUE;
+
+    OnStateChanged = LogParams->OnStateChanged;
+
+    //
+    // Register our GUIDs.
+    //
+
+    status = _RegisterTraceGuids (PerflogCallback,
+                                  LogParams,
+                                  &LogParams->ControlGuid,
+                                  LogParams->NumberOfTraceGuids,
+                                  LogParams->TraceGuids,
+                                  NULL,
+                                  NULL,
+                                  &PerflogRegHandle);
+
+    return (status == ERROR_SUCCESS);
+}
+
+//
+// This routine shuts down performance logging.
+//
+
+VOID
+PerflogShutdown (
+    VOID
+    )
+{
+    if (!EventTracingAvailable) {
+        return;
+    }
+
+    _UnregisterTraceGuids (PerflogRegHandle);
+    PerflogRegHandle = NULL;
+    PerflogTraceHandle = NULL;
+}
+
+//
+// Event tracing callback routine.
+// It's called when controllers call event tracing control functions.
+//
+
+ULONG
+WINAPI
+PerflogCallback (
+    WMIDPREQUESTCODE RequestCode,
+    __in PVOID Context,
+    __out ULONG* BufferSize,
+    __in PVOID Buffer
+    )
+{
+    ULONG status;
+
+    UNREFERENCED_PARAMETER (Context);
+
+    ASSERT (EventTracingAvailable);
+
+    status = ERROR_SUCCESS;
+
+    switch (RequestCode) {
+
+    case WMI_ENABLE_EVENTS:
+        PerflogTraceHandle = _GetTraceLoggerHandle (Buffer);
+        PerflogEnableFlags = _GetTraceEnableFlags (PerflogTraceHandle);
+        PerflogEnableLevel = _GetTraceEnableLevel (PerflogTraceHandle);
+        break;
+
+    case WMI_DISABLE_EVENTS:
+        PerflogTraceHandle = NULL;
+        PerflogEnableFlags = 0;
+        PerflogEnableLevel = 0;
+        break;
+
+    default:
+        status = ERROR_INVALID_PARAMETER;
+    }
+
+    if (OnStateChanged != NULL) {
+        OnStateChanged();
+    }
+
+    *BufferSize = 0;
+    return status;
+}
+
+//
+// Logging routine.
+//
+
+VOID
+PerflogTraceEvent (
+    __in PEVENT_TRACE_HEADER Event
+    )
+{
+    if (!EventTracingAvailable) {
+        return;
+    }
+
+    _TraceEvent (PerflogTraceHandle, Event);
+}
+
+VOID
+PerflogTraceEventLevel(
+    ULONG Level,
+    __in PEVENT_TRACE_HEADER Event
+    )
+{
+    if ((!EventTracingAvailable) || (Level <= PerflogModuleLevel)) {
+        return;
+    }
+
+    _TraceEvent (PerflogTraceHandle, Event);
+}
+
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/perflog.h

@@ -0,0 +1,56 @@
+//------------------------------------------------------------------------------
+// File: perflog.h
+//
+// Desc: Performance logging framework.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+typedef struct _PERFLOG_LOGGING_PARAMS {
+    GUID ControlGuid;
+    void (*OnStateChanged)(void);
+    ULONG NumberOfTraceGuids;
+    TRACE_GUID_REGISTRATION TraceGuids[ANYSIZE_ARRAY];
+} PERFLOG_LOGGING_PARAMS, *PPERFLOG_LOGGING_PARAMS;
+
+BOOL
+PerflogInitIfEnabled(
+    IN HINSTANCE hInstance,
+    __in PPERFLOG_LOGGING_PARAMS LogParams
+    );
+
+BOOL
+PerflogInitialize (
+    __in PPERFLOG_LOGGING_PARAMS LogParams
+    );
+
+VOID
+PerflogShutdown (
+    VOID
+    );
+
+VOID
+PerflogTraceEvent (
+    __in PEVENT_TRACE_HEADER Event
+    );
+
+extern ULONG PerflogEnableFlags;
+extern UCHAR PerflogEnableLevel;
+extern ULONG PerflogModuleLevel;
+extern TRACEHANDLE PerflogTraceHandle;
+extern TRACEHANDLE PerflogRegHandle;
+
+#define PerflogTracingEnabled() (PerflogTraceHandle != 0)
+
+#define PerflogEvent( _x_ ) PerflogTraceEventLevel _x_
+
+VOID
+PerflogTraceEventLevel(
+    ULONG Level,
+    __in PEVENT_TRACE_HEADER Event
+    );
+
+VOID
+PerflogTraceEvent (
+    __in PEVENT_TRACE_HEADER Event
+    );

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/perfstruct.h

@@ -0,0 +1,194 @@
+//------------------------------------------------------------------------------
+// File: PerfStruct.h
+//
+// Desc: Structures for DirectShow performance logging.
+//
+// Copyright (c) 2000-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef _PERFSTRUCT_H_
+#define _PERFSTRUCT_H_
+
+#include <wmistr.h>
+#include <evntrace.h>
+
+// {28CF047A-2437-4b24-B653-B9446A419A69}
+DEFINE_GUID(GUID_DSHOW_CTL,
+0x28cf047a, 0x2437, 0x4b24, 0xb6, 0x53, 0xb9, 0x44, 0x6a, 0x41, 0x9a, 0x69);
+
+// {D0DA7AD6-AE80-4de5-AAFC-C126711E7593}
+DEFINE_GUID(GUID_VIDEOREND,
+0xd0da7ad6, 0xae80, 0x4de5, 0xaa, 0xfc, 0xc1, 0x26, 0x71, 0x1e, 0x75, 0x93);
+
+// {DC70AC3E-93E5-48db-88AB-E42064EC276A}
+DEFINE_GUID(GUID_DSOUNDGLITCH,
+0xdc70ac3e, 0x93e5, 0x48db, 0x88, 0xab, 0xe4, 0x20, 0x64, 0xec, 0x27, 0x6a);
+
+// {3d7e7d93-2fc8-4a07-a719-e0922ff2899}
+DEFINE_GUID(GUID_STREAMTRACE,
+0x3d7e7d93, 0x2fc8, 0x4a07, 0xa7, 0x19, 0xe0, 0x92, 0x2f, 0xf2, 0x89, 0x9e);
+
+// AZFIX: the following GUIDs aren't useful right now.
+
+// {3C33F7F5-EE54-493c-BA25-1656539C05AC}
+DEFINE_GUID(GUID_GETTIME,
+0x3c33f7f5, 0xee54, 0x493c, 0xba, 0x25, 0x16, 0x56, 0x53, 0x9c, 0x5, 0xac);
+
+// {CC44B44D-8169-4952-9E4A-A4E13295E492}
+DEFINE_GUID(GUID_AUDIOREND,
+0xcc44b44d, 0x8169, 0x4952, 0x9e, 0x4a, 0xa4, 0xe1, 0x32, 0x95, 0xe4, 0x92);
+
+// {775D19BF-4D8B-4de6-8DC9-66BAC7B310A2}
+DEFINE_GUID(GUID_FRAMEDROP,
+0x775d19bf, 0x4d8b, 0x4de6, 0x8d, 0xc9, 0x66, 0xba, 0xc7, 0xb3, 0x10, 0xa2);
+
+// {56D29065-EFBE-42dc-8C29-E325DC9C27D5}
+DEFINE_GUID(GUID_AUDIOBREAK,
+0x56d29065, 0xefbe, 0x42dc, 0x8c, 0x29, 0xe3, 0x25, 0xdc, 0x9c, 0x27, 0xd5);
+
+// {E1E6EA87-95A8-497e-BFBA-0295AEBCC707}
+DEFINE_GUID(GUID_AUDIORECV,
+0xe1e6ea87, 0x95a8, 0x497e, 0xbf, 0xba, 0x2, 0x95, 0xae, 0xbc, 0xc7, 0x7);
+
+// {10F7768A-B1E7-4242-AD90-A2D44683D9F0}
+DEFINE_GUID(GUID_AUDIOSLAVE,
+0x10f7768a, 0xb1e7, 0x4242, 0xad, 0x90, 0xa2, 0xd4, 0x46, 0x83, 0xd9, 0xf0);
+
+// {8983803D-691A-49bc-8FF6-962A39C0198F}
+DEFINE_GUID(GUID_AUDIOADDBREAK,
+0x8983803d, 0x691a, 0x49bc, 0x8f, 0xf6, 0x96, 0x2a, 0x39, 0xc0, 0x19, 0x8f);
+
+#define GLITCHTYPE_DSOUNDFIRSTGOOD 0
+#define GLITCHTYPE_DSOUNDFIRSTBAD  1
+
+typedef struct PERFINFO_DSHOW_AUDIOGLITCH {
+    ULONGLONG   cycleCounter;
+    DWORD       glitchType;
+    LONGLONG   sampleTime;
+    LONGLONG   previousTime;
+    ULONG_PTR       instanceId;
+} PERFINFO_DSHOW_AUDIOGLITCH, *PPERFINFO_DSHOW_AUDIOGLITCH;
+
+typedef struct PERFINFO_WMI_AUDIOGLITCH {
+    EVENT_TRACE_HEADER          header;
+    PERFINFO_DSHOW_AUDIOGLITCH  data;
+} PERFINFO_WMI_AUDIO_GLITCH, *PPERFINFO_WMI_AUDIOGLITCH;
+
+typedef struct PERFINFO_DSHOW_GETTIME {
+    ULONGLONG    cycleCounter;
+    ULONGLONG    dshowClock;
+} PERFINFO_DSHOW_GETTIME, *PPERFINFO_DSHOW_GETTIME;
+
+typedef struct PERFINFO_WMI_GETTIME {
+    EVENT_TRACE_HEADER        header;
+    PERFINFO_DSHOW_GETTIME    data;
+} PERFINFO_WMI_GETTIME, *PPERFINFO_WMI_GETTIME;
+
+typedef struct PERFINFO_DSHOW_AVREND {
+    ULONGLONG    cycleCounter;
+    ULONGLONG    dshowClock;
+    ULONGLONG    sampleTime;
+} PERFINFO_DSHOW_AVREND, *PPERFINFO_DSHOW_AVREND;
+
+typedef struct PERFINFO_WMI_AVREND {
+    EVENT_TRACE_HEADER      header;
+    PERFINFO_DSHOW_AVREND   data;
+} PERFINFO_WMI_AVREND, *PPERFINFO_WMI_AVREND;
+
+typedef struct PERFINFO_DSHOW_AUDIOBREAK {
+    ULONGLONG    cycleCounter;
+    ULONGLONG    dshowClock;
+    ULONGLONG    sampleTime;
+    ULONGLONG    sampleDuration;
+} PERFINFO_DSHOW_AUDIOBREAK, *PPERFINFO_DSHOW_AUDIOBREAK;
+
+typedef struct PERFINFO_WMI_AUDIOBREAK {
+    EVENT_TRACE_HEADER          header;
+    PERFINFO_DSHOW_AUDIOBREAK   data;
+} PERFINFO_WMI_AUDIOBREAK, *PPERFINFO_WMI_AUDIOBREAK;
+
+typedef struct PERFINFO_DSHOW_FRAMEDROP {
+    ULONGLONG    cycleCounter;
+    ULONGLONG    dshowClock;
+    ULONGLONG    frameTime;
+} PERFINFO_DSHOW_FRAMEDROP, *PPERFINFO_DSHOW_FRAMEDROP;
+
+typedef struct PERFINFO_WMI_FRAMEDROP {
+    EVENT_TRACE_HEADER          header;
+    PERFINFO_DSHOW_FRAMEDROP    data;
+} PERFINFO_WMI_FRAMEDROP, *PPERFINFO_WMI_FRAMEDROP;
+
+#define PERFINFO_STREAMTRACE_MPEG2DEMUX_PTS_TRANSLATION     1
+#define PERFINFO_STREAMTRACE_MPEG2DEMUX_SAMPLE_RECEIVED     2
+#define PERFINFO_STREAMTRACE_VMR_BEGIN_ADVISE               3
+#define PERFINFO_STREAMTRACE_VMR_END_ADVISE                 4
+#define PERFINFO_STREAMTRACE_VMR_RECEIVE                    5
+#define PERFINFO_STREAMTRACE_VMR_BEGIN_DEINTERLACE          6
+#define PERFINFO_STREAMTRACE_VMR_END_DEINTERLACE            7
+#define PERFINFO_STREAMTRACE_VMR_BEGIN_DECODE               8
+#define PERFINFO_STREAMTRACE_VMR_END_DECODE                 9
+#define PERFINFO_STREAMTRACE_VMR_DROPPED_FRAME              10
+#define PERFINFO_STREAMTRACE_ENCDEC_DTFILTERINPUT           11
+#define PERFINFO_STREAMTRACE_ENCDEC_DTFILTEROUTPUT          12
+#define PERFINFO_STREAMTRACE_ENCDEC_ETFILTERINPUT           13
+#define PERFINFO_STREAMTRACE_ENCDEC_ETFILTEROUTPUT          14
+#define PERFINFO_STREAMTRACE_ENCDEC_XDSCODECINPUT           15
+#define PERFINFO_STREAMTRACE_SBE_DVRANALYSISINPUT_RECEIVE   16
+#define PERFINFO_STREAMTRACE_SBE_DVRANALYSISINPUT_DELIVER   17
+#define PERFINFO_STREAMTRACE_SBE_DVRINPUTPIN_RECEIVE        18
+#define PERFINFO_STREAMTRACE_SBE_DVROUTPUTPIN_RECEIVE       19
+#define PERFINFO_STREAMTRACE_VMR_RENDER_TIME                20
+
+typedef struct _PERFINFO_DSHOW_STREAMTRACE {
+    ULONG        id;
+    ULONG        reserved;
+    ULONGLONG    dshowClock;
+    ULONGLONG    data[ 4 ];
+} PERFINFO_DSHOW_STREAMTRACE, *PPERFINFO_DSHOW_STREAMTRACE;
+
+typedef struct _PERFINFO_WMI_STREAMTRACE {
+    EVENT_TRACE_HEADER          header;
+    PERFINFO_DSHOW_STREAMTRACE  data;
+} PERFINFO_WMI_STREAMTRACE, *PPERFINFO_WMI_STREAMTRACE;
+
+
+typedef struct PERFINFO_DSHOW_AUDIORECV {
+    LONGLONG    streamTime ;
+    LONGLONG    sampleStart ;
+    LONGLONG    sampleStop ;
+    LONGLONG    hwduration ;
+    BOOL        discontinuity ;
+} PERFINFO_DSHOW_AUDIORECV, *PPERFINFO_DSHOW_AUDIORECV;
+
+typedef struct PERFINFO_WMI_AUDIORECV {
+    EVENT_TRACE_HEADER          header;
+    PERFINFO_DSHOW_AUDIORECV   data;
+} PERFINFO_WMI_AUDIORECV, *PPERFINFO_WMI_AUDIORECV;
+
+typedef struct PERFINFO_DSHOW_AUDIOSLAVE {
+    LONGLONG    masterClock ;
+    LONGLONG    slaveClock ;
+    LONGLONG    errorAccum ;
+    LONGLONG    lastHighErrorSeen ;
+    LONGLONG    lastLowErrorSeen ;
+} PERFINFO_DSHOW_AUDIOSLAVE, *PPERFINFO_DSHOW_AUDIOSLAVE;
+
+typedef struct PERFINFO_WMI_AUDIOSLAVE {
+    EVENT_TRACE_HEADER          header;
+    PERFINFO_DSHOW_AUDIOSLAVE   data;
+} PERFINFO_WMI_AUDIOSLAVE, *PPERFINFO_WMI_AUDIOSLAVE;
+
+typedef struct PERFINFO_DSHOW_AUDIOADDBREAK {
+    DWORD   iterNextWrite ;
+    DWORD   offsetNextWrite ;
+    DWORD   iterWrite ;
+    DWORD   offsetWrite ;
+} PERFINFO_DSHOW_AUDIOADDBREAK, *PPERFINFO_DSHOW_AUDIOADDBREAK;
+
+typedef struct PERFINFO_WMI_AUDIOADDBREAK {
+    EVENT_TRACE_HEADER              header;
+    PERFINFO_DSHOW_AUDIOADDBREAK    data;
+} PERFINFO_WMI_AUDIOADDBREAK, *PPERFINFO_WMI_AUDIOADDBREAK;
+
+#endif // _PREFSTRUCT_H_

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/pstream.cpp

@@ -0,0 +1,197 @@
+//------------------------------------------------------------------------------
+// File: PStream.cpp
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#include <strsafe.h>
+
+#ifdef PERF
+#include <measure.h>
+#endif
+// #include "pstream.h"  in streams.h
+
+//
+// Constructor
+//
+CPersistStream::CPersistStream(IUnknown *punk, __inout HRESULT *phr)
+    : mPS_fDirty(FALSE)
+{
+    mPS_dwFileVersion = GetSoftwareVersion();
+}
+
+
+//
+// Destructor
+//
+CPersistStream::~CPersistStream() {
+    // Nothing to do
+}
+
+#if 0
+SAMPLE CODE TO COPY - not active at the moment
+
+//
+// NonDelegatingQueryInterface
+//
+// This object supports IPersist & IPersistStream
+STDMETHODIMP CPersistStream::NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv)
+{
+    if (riid == IID_IPersist) {
+        return GetInterface((IPersist *) this, ppv);      // ???
+    }
+    else if (riid == IID_IPersistStream) {
+        return GetInterface((IPersistStream *) this, ppv);
+    }
+    else {
+        return CUnknown::NonDelegatingQueryInterface(riid, ppv);
+    }
+}
+#endif
+
+
+//
+// WriteToStream
+//
+// Writes to the stream (default action is to write nothing)
+HRESULT CPersistStream::WriteToStream(IStream *pStream)
+{
+    // You can override this to do things like
+    // hr = pStream->Write(MyStructure, sizeof(MyStructure), NULL);
+
+    return NOERROR;
+}
+
+
+
+HRESULT CPersistStream::ReadFromStream(IStream * pStream)
+{
+    // You can override this to do things like
+    // hr = pStream->Read(MyStructure, sizeof(MyStructure), NULL);
+
+    return NOERROR;
+}
+
+
+//
+// Load
+//
+// Load all the data from the given stream
+STDMETHODIMP CPersistStream::Load(LPSTREAM pStm)
+{
+    HRESULT hr;
+    // Load the version number then the data
+    mPS_dwFileVersion = ReadInt(pStm, hr);
+    if (FAILED(hr)) {
+        return hr;
+    }
+
+    return ReadFromStream(pStm);
+}  // Load
+
+
+
+//
+// Save
+//
+// Save the contents of this Stream.
+STDMETHODIMP CPersistStream::Save(LPSTREAM pStm, BOOL fClearDirty)
+{
+
+    HRESULT hr = WriteInt(pStm, GetSoftwareVersion());
+    if (FAILED(hr)) {
+        return hr;
+    }
+
+    hr = WriteToStream(pStm);
+    if (FAILED(hr)) {
+        return hr;
+    }
+
+    mPS_fDirty = !fClearDirty;
+
+    return hr;
+} // Save
+
+
+// WriteInt
+//
+// Writes an integer to an IStream as 11 UNICODE characters followed by one space.
+// You could use this for shorts or unsigneds or anything (up to 32 bits)
+// where the value isn't actually truncated by squeezing it into 32 bits.
+// Values such as (unsigned) 0x80000000 would come out as -2147483648
+// but would then load as 0x80000000 through ReadInt.  Cast as you please.
+
+STDAPI WriteInt(IStream *pIStream, int n)
+{
+    WCHAR Buff[13];  // Allows for trailing null that we don't write
+    (void)StringCchPrintfW(Buff, NUMELMS(Buff),L"%011d ",n);
+    return pIStream->Write(&(Buff[0]), 12*sizeof(WCHAR), NULL);
+} // WriteInt
+
+
+// ReadInt
+//
+// Reads an integer from an IStream.
+// Read as 4 bytes.  You could use this for shorts or unsigneds or anything
+// where the value isn't actually truncated by squeezing it into 32 bits
+// Striped down subset of what sscanf can do (without dragging in the C runtime)
+
+STDAPI_(int) ReadInt(IStream *pIStream, __out HRESULT &hr)
+{
+
+    int Sign = 1;
+    unsigned int n = 0;    // result wil be n*Sign
+    WCHAR wch;
+
+    hr = pIStream->Read( &wch, sizeof(wch), NULL);
+    if (FAILED(hr)) {
+        return 0;
+    }
+
+    if (wch==L'-'){
+        Sign = -1;
+        hr = pIStream->Read( &wch, sizeof(wch), NULL);
+        if (FAILED(hr)) {
+            return 0;
+        }
+    }
+
+    for( ; ; ) {
+        if (wch>=L'0' && wch<=L'9') {
+            n = 10*n+(int)(wch-L'0');
+        } else if (  wch == L' '
+                  || wch == L'\t'
+                  || wch == L'\r'
+                  || wch == L'\n'
+                  || wch == L'\0'
+                  ) {
+            break;
+        } else {
+            hr = VFW_E_INVALID_FILE_FORMAT;
+            return 0;
+        }
+
+        hr = pIStream->Read( &wch, sizeof(wch), NULL);
+        if (FAILED(hr)) {
+            return 0;
+        }
+    }
+
+    if (n==0x80000000 && Sign==-1) {
+        // This is the negative number that has no positive version!
+        return (int)n;
+    }
+    else return (int)n * Sign;
+} // ReadInt
+
+
+// The microsoft C/C++ compile generates level 4 warnings to the effect that
+// a particular inline function (from some base class) was not needed.
+// This line gets rid of hundreds of such unwanted messages and makes
+// -W4 compilation feasible:
+#pragma warning(disable: 4514)

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/pstream.h

@@ -0,0 +1,114 @@
+//------------------------------------------------------------------------------
+// File: PStream.h
+//
+// Desc: DirectShow base classes - defines a class for persistent properties
+//       of filters.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __PSTREAM__
+#define __PSTREAM__
+
+// Base class for persistent properties of filters
+// (i.e. filter properties in saved graphs)
+
+// The simplest way to use this is:
+// 1. Arrange for your filter to inherit this class
+// 2. Implement in your class WriteToStream and ReadFromStream
+//    These will override the "do nothing" functions here.
+// 3. Change your NonDelegatingQueryInterface to handle IPersistStream
+// 4. Implement SizeMax to return the number of bytes of data you save.
+//    If you save UNICODE data, don't forget a char is 2 bytes.
+// 5. Whenever your data changes, call SetDirty()
+//
+// At some point you may decide to alter, or extend the format of your data.
+// At that point you will wish that you had a version number in all the old
+// saved graphs, so that you can tell, when you read them, whether they
+// represent the old or new form.  To assist you in this, this class
+// writes and reads a version number.
+// When it writes, it calls GetSoftwareVersion()  to enquire what version
+// of the software we have at the moment.  (In effect this is a version number
+// of the data layout in the file).  It writes this as the first thing in the data.
+// If you want to change the version, implement (override) GetSoftwareVersion().
+// It reads this from the file into mPS_dwFileVersion before calling ReadFromStream,
+// so in ReadFromStream you can check mPS_dwFileVersion to see if you are reading
+// an old version file.
+// Normally you should accept files whose version is no newer than the software
+// version that's reading them.
+
+
+// CPersistStream
+//
+// Implements IPersistStream.
+// See 'OLE Programmers Reference (Vol 1):Structured Storage Overview' for
+// more implementation information.
+class CPersistStream : public IPersistStream {
+    private:
+
+        // Internal state:
+
+    protected:
+        DWORD     mPS_dwFileVersion;         // version number of file (being read)
+        BOOL      mPS_fDirty;
+
+    public:
+
+        // IPersistStream methods
+
+        STDMETHODIMP IsDirty()
+            {return (mPS_fDirty ? S_OK : S_FALSE);}  // note FALSE means clean
+        STDMETHODIMP Load(LPSTREAM pStm);
+        STDMETHODIMP Save(LPSTREAM pStm, BOOL fClearDirty);
+        STDMETHODIMP GetSizeMax(__out ULARGE_INTEGER * pcbSize)
+                         // Allow 24 bytes for version.
+                         { pcbSize->QuadPart = 12*sizeof(WCHAR)+SizeMax(); return NOERROR; }
+
+        // implementation
+
+        CPersistStream(IUnknown *punk, __inout HRESULT *phr);
+        ~CPersistStream();
+
+        HRESULT SetDirty(BOOL fDirty)
+            { mPS_fDirty = fDirty; return NOERROR;}
+
+
+        // override to reveal IPersist & IPersistStream
+        // STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, void **ppv);
+
+        // --- IPersist ---
+
+        // You must override this to provide your own class id
+        STDMETHODIMP GetClassID(__out CLSID *pClsid) PURE;
+
+        // overrideable if you want
+        // file version number.  Override it if you ever change format
+        virtual DWORD GetSoftwareVersion(void) { return 0; }
+
+
+        //=========================================================================
+        // OVERRIDE THESE to read and write your data
+        // OVERRIDE THESE to read and write your data
+        // OVERRIDE THESE to read and write your data
+
+        virtual int SizeMax() {return 0;}
+        virtual HRESULT WriteToStream(IStream *pStream);
+        virtual HRESULT ReadFromStream(IStream *pStream);
+        //=========================================================================
+
+    private:
+
+};
+
+
+// --- Useful helpers ---
+
+
+// Writes an int to an IStream as UNICODE.
+STDAPI WriteInt(IStream *pIStream, int n);
+
+// inverse of WriteInt
+STDAPI_(int) ReadInt(IStream *pIStream, __out HRESULT &hr);
+
+#endif // __PSTREAM__

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/pullpin.cpp

@@ -0,0 +1,588 @@
+//------------------------------------------------------------------------------
+// File: PullPin.cpp
+//
+// Desc: DirectShow base classes - implements CPullPin class that pulls data
+//       from IAsyncReader.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#include "pullpin.h"
+
+#ifdef DXMPERF
+#include "dxmperf.h"
+#endif // DXMPERF
+
+
+CPullPin::CPullPin()
+  : m_pReader(NULL),
+    m_pAlloc(NULL),
+    m_State(TM_Exit)
+{
+#ifdef DXMPERF
+	PERFLOG_CTOR( L"CPullPin", this );
+#endif // DXMPERF
+
+}
+
+CPullPin::~CPullPin()
+{
+    Disconnect();
+
+#ifdef DXMPERF
+	PERFLOG_DTOR( L"CPullPin", this );
+#endif // DXMPERF
+
+}
+
+// returns S_OK if successfully connected to an IAsyncReader interface
+// from this object
+// Optional allocator should be proposed as a preferred allocator if
+// necessary
+HRESULT
+CPullPin::Connect(IUnknown* pUnk, IMemAllocator* pAlloc, BOOL bSync)
+{
+    CAutoLock lock(&m_AccessLock);
+
+    if (m_pReader) {
+	return VFW_E_ALREADY_CONNECTED;
+    }
+
+    HRESULT hr = pUnk->QueryInterface(IID_IAsyncReader, (void**)&m_pReader);
+    if (FAILED(hr)) {
+
+#ifdef DXMPERF
+		{
+		AM_MEDIA_TYPE *	pmt = NULL;
+		PERFLOG_CONNECT( this, pUnk, hr, pmt );
+		}
+#endif // DXMPERF
+
+	return(hr);
+    }
+
+    hr = DecideAllocator(pAlloc, NULL);
+    if (FAILED(hr)) {
+	Disconnect();
+
+#ifdef DXMPERF
+		{
+		AM_MEDIA_TYPE *	pmt = NULL;
+		PERFLOG_CONNECT( this, pUnk, hr, pmt );
+		}
+#endif // DXMPERF
+
+	return hr;
+    }
+
+    LONGLONG llTotal, llAvail;
+    hr = m_pReader->Length(&llTotal, &llAvail);
+    if (FAILED(hr)) {
+	Disconnect();
+
+#ifdef DXMPERF
+		{
+		AM_MEDIA_TYPE *	pmt = NULL;
+		PERFLOG_CONNECT( this, pUnk, hr, pmt );
+		}
+#endif
+
+	return hr;
+    }
+
+    // convert from file position to reference time
+    m_tDuration = llTotal * UNITS;
+    m_tStop = m_tDuration;
+    m_tStart = 0;
+
+    m_bSync = bSync;
+
+#ifdef DXMPERF
+	{
+	AM_MEDIA_TYPE *	pmt = NULL;
+	PERFLOG_CONNECT( this, pUnk, S_OK, pmt );
+	}
+#endif // DXMPERF
+
+
+    return S_OK;
+}
+
+// disconnect any connection made in Connect
+HRESULT
+CPullPin::Disconnect()
+{
+    CAutoLock lock(&m_AccessLock);
+
+    StopThread();
+
+
+#ifdef DXMPERF
+	PERFLOG_DISCONNECT( this, m_pReader, S_OK );
+#endif // DXMPERF
+
+
+    if (m_pReader) {
+	m_pReader->Release();
+	m_pReader = NULL;
+    }
+
+    if (m_pAlloc) {
+	m_pAlloc->Release();
+	m_pAlloc = NULL;
+    }
+
+    return S_OK;
+}
+
+// agree an allocator using RequestAllocator - optional
+// props param specifies your requirements (non-zero fields).
+// returns an error code if fail to match requirements.
+// optional IMemAllocator interface is offered as a preferred allocator
+// but no error occurs if it can't be met.
+HRESULT
+CPullPin::DecideAllocator(
+    IMemAllocator * pAlloc,
+    __inout_opt ALLOCATOR_PROPERTIES * pProps)
+{
+    ALLOCATOR_PROPERTIES *pRequest;
+    ALLOCATOR_PROPERTIES Request;
+    if (pProps == NULL) {
+	Request.cBuffers = 3;
+	Request.cbBuffer = 64*1024;
+	Request.cbAlign = 0;
+	Request.cbPrefix = 0;
+	pRequest = &Request;
+    } else {
+	pRequest = pProps;
+    }
+    HRESULT hr = m_pReader->RequestAllocator(
+		    pAlloc,
+		    pRequest,
+		    &m_pAlloc);
+    return hr;
+}
+
+// start pulling data
+HRESULT
+CPullPin::Active(void)
+{
+    ASSERT(!ThreadExists());
+    return StartThread();
+}
+
+// stop pulling data
+HRESULT
+CPullPin::Inactive(void)
+{
+    StopThread();
+
+    return S_OK;
+}
+
+HRESULT
+CPullPin::Seek(REFERENCE_TIME tStart, REFERENCE_TIME tStop)
+{
+    CAutoLock lock(&m_AccessLock);
+
+    ThreadMsg AtStart = m_State;
+
+    if (AtStart == TM_Start) {
+	BeginFlush();
+	PauseThread();
+	EndFlush();
+    }
+
+    m_tStart = tStart;
+    m_tStop = tStop;
+
+    HRESULT hr = S_OK;
+    if (AtStart == TM_Start) {
+	hr = StartThread();
+    }
+
+    return hr;
+}
+
+HRESULT
+CPullPin::Duration(__out REFERENCE_TIME* ptDuration)
+{
+    *ptDuration = m_tDuration;
+    return S_OK;
+}
+
+
+HRESULT
+CPullPin::StartThread()
+{
+    CAutoLock lock(&m_AccessLock);
+
+    if (!m_pAlloc || !m_pReader) {
+	return E_UNEXPECTED;
+    }
+
+    HRESULT hr;
+    if (!ThreadExists()) {
+
+	// commit allocator
+	hr = m_pAlloc->Commit();
+	if (FAILED(hr)) {
+	    return hr;
+	}
+
+	// start thread
+	if (!Create()) {
+	    return E_FAIL;
+	}
+    }
+
+    m_State = TM_Start;
+    hr = (HRESULT) CallWorker(m_State);
+    return hr;
+}
+
+HRESULT
+CPullPin::PauseThread()
+{
+    CAutoLock lock(&m_AccessLock);
+
+    if (!ThreadExists()) {
+	return E_UNEXPECTED;
+    }
+
+    // need to flush to ensure the thread is not blocked
+    // in WaitForNext
+    HRESULT hr = m_pReader->BeginFlush();
+    if (FAILED(hr)) {
+	return hr;
+    }
+
+    m_State = TM_Pause;
+    hr = CallWorker(TM_Pause);
+
+    m_pReader->EndFlush();
+    return hr;
+}
+
+HRESULT
+CPullPin::StopThread()
+{
+    CAutoLock lock(&m_AccessLock);
+
+    if (!ThreadExists()) {
+	return S_FALSE;
+    }
+
+    // need to flush to ensure the thread is not blocked
+    // in WaitForNext
+    HRESULT hr = m_pReader->BeginFlush();
+    if (FAILED(hr)) {
+	return hr;
+    }
+
+    m_State = TM_Exit;
+    hr = CallWorker(TM_Exit);
+
+    m_pReader->EndFlush();
+
+    // wait for thread to completely exit
+    Close();
+
+    // decommit allocator
+    if (m_pAlloc) {
+	m_pAlloc->Decommit();
+    }
+
+    return S_OK;
+}
+
+
+DWORD
+CPullPin::ThreadProc(void)
+{
+    while(1) {
+	DWORD cmd = GetRequest();
+	switch(cmd) {
+	case TM_Exit:
+	    Reply(S_OK);
+	    return 0;
+
+	case TM_Pause:
+	    // we are paused already
+	    Reply(S_OK);
+	    break;
+
+	case TM_Start:
+	    Reply(S_OK);
+	    Process();
+	    break;
+	}
+
+	// at this point, there should be no outstanding requests on the
+	// upstream filter.
+	// We should force begin/endflush to ensure that this is true.
+	// !!!Note that we may currently be inside a BeginFlush/EndFlush pair
+	// on another thread, but the premature EndFlush will do no harm now
+	// that we are idle.
+	m_pReader->BeginFlush();
+	CleanupCancelled();
+	m_pReader->EndFlush();
+    }
+}
+
+HRESULT
+CPullPin::QueueSample(
+    __inout REFERENCE_TIME& tCurrent,
+    REFERENCE_TIME tAlignStop,
+    BOOL bDiscontinuity
+    )
+{
+    IMediaSample* pSample;
+
+    HRESULT hr = m_pAlloc->GetBuffer(&pSample, NULL, NULL, 0);
+    if (FAILED(hr)) {
+	return hr;
+    }
+
+    LONGLONG tStopThis = tCurrent + (pSample->GetSize() * UNITS);
+    if (tStopThis > tAlignStop) {
+	tStopThis = tAlignStop;
+    }
+    pSample->SetTime(&tCurrent, &tStopThis);
+    tCurrent = tStopThis;
+
+    pSample->SetDiscontinuity(bDiscontinuity);
+
+    hr = m_pReader->Request(
+			pSample,
+			0);
+    if (FAILED(hr)) {
+	pSample->Release();
+
+	CleanupCancelled();
+	OnError(hr);
+    }
+    return hr;
+}
+
+HRESULT
+CPullPin::CollectAndDeliver(
+    REFERENCE_TIME tStart,
+    REFERENCE_TIME tStop)
+{
+    IMediaSample* pSample = NULL;   // better be sure pSample is set
+    DWORD_PTR dwUnused;
+    HRESULT hr = m_pReader->WaitForNext(
+			INFINITE,
+			&pSample,
+			&dwUnused);
+    if (FAILED(hr)) {
+	if (pSample) {
+	    pSample->Release();
+	}
+    } else {
+	hr = DeliverSample(pSample, tStart, tStop);
+    }
+    if (FAILED(hr)) {
+	CleanupCancelled();
+	OnError(hr);
+    }
+    return hr;
+
+}
+
+HRESULT
+CPullPin::DeliverSample(
+    IMediaSample* pSample,
+    REFERENCE_TIME tStart,
+    REFERENCE_TIME tStop
+    )
+{
+    // fix up sample if past actual stop (for sector alignment)
+    REFERENCE_TIME t1, t2;
+    if (S_OK == pSample->GetTime(&t1, &t2)) {
+        if (t2 > tStop) {
+            t2 = tStop;
+        }
+
+        // adjust times to be relative to (aligned) start time
+        t1 -= tStart;
+        t2 -= tStart;
+        HRESULT hr = pSample->SetTime(&t1, &t2);
+        if (FAILED(hr)) {
+            return hr;
+        }
+    }
+
+#ifdef DXMPERF
+	{
+	AM_MEDIA_TYPE *	pmt = NULL;
+	pSample->GetMediaType( &pmt );
+	PERFLOG_RECEIVE( L"CPullPin", m_pReader, this, pSample, pmt );
+	}
+#endif
+
+    HRESULT hr = Receive(pSample);
+    pSample->Release();
+    return hr;
+}
+
+void
+CPullPin::Process(void)
+{
+    // is there anything to do?
+    if (m_tStop <= m_tStart) {
+	EndOfStream();
+	return;
+    }
+
+    BOOL bDiscontinuity = TRUE;
+
+    // if there is more than one sample at the allocator,
+    // then try to queue 2 at once in order to overlap.
+    // -- get buffer count and required alignment
+    ALLOCATOR_PROPERTIES Actual;
+    HRESULT hr = m_pAlloc->GetProperties(&Actual);
+
+    // align the start position downwards
+    REFERENCE_TIME tStart = AlignDown(m_tStart / UNITS, Actual.cbAlign) * UNITS;
+    REFERENCE_TIME tCurrent = tStart;
+
+    REFERENCE_TIME tStop = m_tStop;
+    if (tStop > m_tDuration) {
+	tStop = m_tDuration;
+    }
+
+    // align the stop position - may be past stop, but that
+    // doesn't matter
+    REFERENCE_TIME tAlignStop = AlignUp(tStop / UNITS, Actual.cbAlign) * UNITS;
+
+
+    DWORD dwRequest;
+
+    if (!m_bSync) {
+
+	//  Break out of the loop either if we get to the end or we're asked
+	//  to do something else
+	while (tCurrent < tAlignStop) {
+
+	    // Break out without calling EndOfStream if we're asked to
+	    // do something different
+	    if (CheckRequest(&dwRequest)) {
+		return;
+	    }
+
+	    // queue a first sample
+	    if (Actual.cBuffers > 1) {
+
+		hr = QueueSample(tCurrent, tAlignStop, TRUE);
+		bDiscontinuity = FALSE;
+
+		if (FAILED(hr)) {
+		    return;
+		}
+	    }
+
+
+
+	    // loop queueing second and waiting for first..
+	    while (tCurrent < tAlignStop) {
+
+		hr = QueueSample(tCurrent, tAlignStop, bDiscontinuity);
+		bDiscontinuity = FALSE;
+
+		if (FAILED(hr)) {
+		    return;
+		}
+
+		hr = CollectAndDeliver(tStart, tStop);
+		if (S_OK != hr) {
+
+		    // stop if error, or if downstream filter said
+		    // to stop.
+		    return;
+		}
+	    }
+
+	    if (Actual.cBuffers > 1) {
+		hr = CollectAndDeliver(tStart, tStop);
+		if (FAILED(hr)) {
+		    return;
+		}
+	    }
+	}
+    } else {
+
+	// sync version of above loop
+	while (tCurrent < tAlignStop) {
+
+	    // Break out without calling EndOfStream if we're asked to
+	    // do something different
+	    if (CheckRequest(&dwRequest)) {
+		return;
+	    }
+
+	    IMediaSample* pSample;
+
+	    hr = m_pAlloc->GetBuffer(&pSample, NULL, NULL, 0);
+	    if (FAILED(hr)) {
+		OnError(hr);
+		return;
+	    }
+
+	    LONGLONG tStopThis = tCurrent + (pSample->GetSize() * UNITS);
+	    if (tStopThis > tAlignStop) {
+		tStopThis = tAlignStop;
+	    }
+	    pSample->SetTime(&tCurrent, &tStopThis);
+	    tCurrent = tStopThis;
+
+	    if (bDiscontinuity) {
+		pSample->SetDiscontinuity(TRUE);
+		bDiscontinuity = FALSE;
+	    }
+
+	    hr = m_pReader->SyncReadAligned(pSample);
+
+	    if (FAILED(hr)) {
+		pSample->Release();
+		OnError(hr);
+		return;
+	    }
+
+	    hr = DeliverSample(pSample, tStart, tStop);
+	    if (hr != S_OK) {
+		if (FAILED(hr)) {
+		    OnError(hr);
+		}
+		return;
+	    }
+	}
+    }
+
+    EndOfStream();
+}
+
+// after a flush, cancelled i/o will be waiting for collection
+// and release
+void
+CPullPin::CleanupCancelled(void)
+{
+    while (1) {
+	IMediaSample * pSample;
+	DWORD_PTR dwUnused;
+
+	HRESULT hr = m_pReader->WaitForNext(
+			    0,          // no wait
+			    &pSample,
+			    &dwUnused);
+	if(pSample) {
+	    pSample->Release();
+	} else {
+	    // no more samples
+	    return;
+	}
+    }
+}

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/pullpin.h

@@ -0,0 +1,152 @@
+//------------------------------------------------------------------------------
+// File: PullPin.h
+//
+// Desc: DirectShow base classes - defines CPullPin class.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __PULLPIN_H__
+#define __PULLPIN_H__
+
+//
+// CPullPin
+//
+// object supporting pulling data from an IAsyncReader interface.
+// Given a start/stop position, calls a pure Receive method with each
+// IMediaSample received.
+//
+// This is essentially for use in a MemInputPin when it finds itself
+// connected to an IAsyncReader pin instead of a pushing pin.
+//
+
+class CPullPin : public CAMThread
+{
+    IAsyncReader*       m_pReader;
+    REFERENCE_TIME      m_tStart;
+    REFERENCE_TIME      m_tStop;
+    REFERENCE_TIME      m_tDuration;
+    BOOL                m_bSync;
+
+    enum ThreadMsg {
+	TM_Pause,       // stop pulling and wait for next message
+	TM_Start,       // start pulling
+	TM_Exit,        // stop and exit
+    };
+
+    ThreadMsg m_State;
+
+    // override pure thread proc from CAMThread
+    DWORD ThreadProc(void);
+
+    // running pull method (check m_bSync)
+    void Process(void);
+
+    // clean up any cancelled i/o after a flush
+    void CleanupCancelled(void);
+
+    // suspend thread from pulling, eg during seek
+    HRESULT PauseThread();
+
+    // start thread pulling - create thread if necy
+    HRESULT StartThread();
+
+    // stop and close thread
+    HRESULT StopThread();
+
+    // called from ProcessAsync to queue and collect requests
+    HRESULT QueueSample(
+		__inout REFERENCE_TIME& tCurrent,
+		REFERENCE_TIME tAlignStop,
+		BOOL bDiscontinuity);
+
+    HRESULT CollectAndDeliver(
+		REFERENCE_TIME tStart,
+		REFERENCE_TIME tStop);
+
+    HRESULT DeliverSample(
+		IMediaSample* pSample,
+		REFERENCE_TIME tStart,
+		REFERENCE_TIME tStop);
+
+protected:
+    IMemAllocator *     m_pAlloc;
+
+public:
+    CPullPin();
+    virtual ~CPullPin();
+
+    // returns S_OK if successfully connected to an IAsyncReader interface
+    // from this object
+    // Optional allocator should be proposed as a preferred allocator if
+    // necessary
+    // bSync is TRUE if we are to use sync reads instead of the
+    // async methods.
+    HRESULT Connect(IUnknown* pUnk, IMemAllocator* pAlloc, BOOL bSync);
+
+    // disconnect any connection made in Connect
+    HRESULT Disconnect();
+
+    // agree an allocator using RequestAllocator - optional
+    // props param specifies your requirements (non-zero fields).
+    // returns an error code if fail to match requirements.
+    // optional IMemAllocator interface is offered as a preferred allocator
+    // but no error occurs if it can't be met.
+    virtual HRESULT DecideAllocator(
+		IMemAllocator* pAlloc,
+		__inout_opt ALLOCATOR_PROPERTIES * pProps);
+
+    // set start and stop position. if active, will start immediately at
+    // the new position. Default is 0 to duration
+    HRESULT Seek(REFERENCE_TIME tStart, REFERENCE_TIME tStop);
+
+    // return the total duration
+    HRESULT Duration(__out REFERENCE_TIME* ptDuration);
+
+    // start pulling data
+    HRESULT Active(void);
+
+    // stop pulling data
+    HRESULT Inactive(void);
+
+    // helper functions
+    LONGLONG AlignDown(LONGLONG ll, LONG lAlign) {
+	// aligning downwards is just truncation
+	return ll & ~(lAlign-1);
+    };
+
+    LONGLONG AlignUp(LONGLONG ll, LONG lAlign) {
+	// align up: round up to next boundary
+	return (ll + (lAlign -1)) & ~(lAlign -1);
+    };
+
+    // GetReader returns the (addrefed) IAsyncReader interface
+    // for SyncRead etc
+    IAsyncReader* GetReader() {
+	m_pReader->AddRef();
+	return m_pReader;
+    };
+
+    // -- pure --
+
+    // override this to handle data arrival
+    // return value other than S_OK will stop data
+    virtual HRESULT Receive(IMediaSample*) PURE;
+
+    // override this to handle end-of-stream
+    virtual HRESULT EndOfStream(void) PURE;
+
+    // called on runtime errors that will have caused pulling
+    // to stop
+    // these errors are all returned from the upstream filter, who
+    // will have already reported any errors to the filtergraph.
+    virtual void OnError(HRESULT hr) PURE;
+
+    // flush this pin and all downstream
+    virtual HRESULT BeginFlush() PURE;
+    virtual HRESULT EndFlush() PURE;
+
+};
+
+#endif //__PULLPIN_H__

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/refclock.cpp

@@ -0,0 +1,402 @@
+//------------------------------------------------------------------------------
+// File: RefClock.cpp
+//
+// Desc: DirectShow base classes - implements the IReferenceClock interface.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#include <limits.h>
+
+#ifdef DXMPERF
+#include "dxmperf.h"
+#endif // DXMPERF
+
+
+// 'this' used in constructor list
+#pragma warning(disable:4355)
+
+
+STDMETHODIMP CBaseReferenceClock::NonDelegatingQueryInterface(
+    REFIID riid,
+    __deref_out void ** ppv)
+{
+    HRESULT hr;
+
+    if (riid == IID_IReferenceClock)
+    {
+        hr = GetInterface((IReferenceClock *) this, ppv);
+    }
+    else if (riid == IID_IReferenceClockTimerControl)
+    {
+        hr = GetInterface((IReferenceClockTimerControl *) this, ppv);
+    }
+    else
+    {
+        hr = CUnknown::NonDelegatingQueryInterface(riid, ppv);
+    }
+    return hr;
+}
+
+CBaseReferenceClock::~CBaseReferenceClock()
+{
+#ifdef DXMPERF
+    PERFLOG_DTOR( L"CBaseReferenceClock", (IReferenceClock *) this );
+#endif // DXMPERF
+
+    if (m_TimerResolution) timeEndPeriod(m_TimerResolution);
+
+    if (m_pSchedule)
+    {
+        m_pSchedule->DumpLinkedList();
+    }
+
+    if (m_hThread)
+    {
+        m_bAbort = TRUE;
+        TriggerThread();
+        WaitForSingleObject( m_hThread, INFINITE );
+        EXECUTE_ASSERT( CloseHandle(m_hThread) );
+        m_hThread = 0;
+        EXECUTE_ASSERT( CloseHandle(m_pSchedule->GetEvent()) );
+	delete m_pSchedule;
+    }
+}
+
+// A derived class may supply a hThreadEvent if it has its own thread that will take care
+// of calling the schedulers Advise method.  (Refere to CBaseReferenceClock::AdviseThread()
+// to see what such a thread has to do.)
+CBaseReferenceClock::CBaseReferenceClock( __in_opt LPCTSTR pName, 
+                                          __inout_opt LPUNKNOWN pUnk, 
+                                          __inout HRESULT *phr, 
+                                          __inout_opt CAMSchedule * pShed )
+: CUnknown( pName, pUnk )
+, m_rtLastGotTime(0)
+, m_TimerResolution(0)
+, m_bAbort( FALSE )
+, m_pSchedule( pShed ? pShed : new CAMSchedule(CreateEvent(NULL, FALSE, FALSE, NULL)) )
+, m_hThread(0)
+{
+
+#ifdef DXMPERF
+    PERFLOG_CTOR( pName ? pName : L"CBaseReferenceClock", (IReferenceClock *) this );
+#endif // DXMPERF
+
+    ASSERT(m_pSchedule);
+    if (!m_pSchedule)
+    {
+        *phr = E_OUTOFMEMORY;
+    }
+    else
+    {
+        // Set up the highest resolution timer we can manage
+        TIMECAPS tc;
+        m_TimerResolution = (TIMERR_NOERROR == timeGetDevCaps(&tc, sizeof(tc)))
+                            ? tc.wPeriodMin
+                            : 1;
+
+        timeBeginPeriod(m_TimerResolution);
+
+        /* Initialise our system times - the derived clock should set the right values */
+        m_dwPrevSystemTime = timeGetTime();
+        m_rtPrivateTime = (UNITS / MILLISECONDS) * m_dwPrevSystemTime;
+
+        #ifdef PERF
+            m_idGetSystemTime = MSR_REGISTER(TEXT("CBaseReferenceClock::GetTime"));
+        #endif
+
+        if ( !pShed )
+        {
+            DWORD ThreadID;
+            m_hThread = ::CreateThread(NULL,                  // Security attributes
+                                       (DWORD) 0,             // Initial stack size
+                                       AdviseThreadFunction,  // Thread start address
+                                       (LPVOID) this,         // Thread parameter
+                                       (DWORD) 0,             // Creation flags
+                                       &ThreadID);            // Thread identifier
+
+            if (m_hThread)
+            {
+                SetThreadPriority( m_hThread, THREAD_PRIORITY_TIME_CRITICAL );
+            }
+            else
+            {
+                *phr = E_FAIL;
+                EXECUTE_ASSERT( CloseHandle(m_pSchedule->GetEvent()) );
+                delete m_pSchedule;
+                m_pSchedule = NULL;
+            }
+        }
+    }
+}
+
+void CBaseReferenceClock::Restart (IN REFERENCE_TIME rtMinTime)
+{
+    Lock();
+    m_rtLastGotTime = rtMinTime ;
+    Unlock();
+}
+
+STDMETHODIMP CBaseReferenceClock::GetTime(__out REFERENCE_TIME *pTime)
+{
+    HRESULT hr;
+    if (pTime)
+    {
+        REFERENCE_TIME rtNow;
+        Lock();
+        rtNow = GetPrivateTime();
+        if (rtNow > m_rtLastGotTime)
+        {
+            m_rtLastGotTime = rtNow;
+            hr = S_OK;
+        }
+        else
+        {
+            hr = S_FALSE;
+        }
+        *pTime = m_rtLastGotTime;
+        Unlock();
+        MSR_INTEGER(m_idGetSystemTime, LONG((*pTime) / (UNITS/MILLISECONDS)) );
+
+#ifdef DXMPERF
+        PERFLOG_GETTIME( (IReferenceClock *) this, *pTime );
+#endif // DXMPERF
+
+    }
+    else hr = E_POINTER;
+
+    return hr;
+}
+
+/* Ask for an async notification that a time has elapsed */
+
+STDMETHODIMP CBaseReferenceClock::AdviseTime(
+    REFERENCE_TIME baseTime,         // base reference time
+    REFERENCE_TIME streamTime,       // stream offset time
+    HEVENT hEvent,                   // advise via this event
+    __out DWORD_PTR *pdwAdviseCookie)// where your cookie goes
+{
+    CheckPointer(pdwAdviseCookie, E_POINTER);
+    *pdwAdviseCookie = 0;
+
+    // Check that the event is not already set
+    ASSERT(WAIT_TIMEOUT == WaitForSingleObject(HANDLE(hEvent),0));
+
+    HRESULT hr;
+
+    const REFERENCE_TIME lRefTime = baseTime + streamTime;
+    if ( lRefTime <= 0 || lRefTime == MAX_TIME )
+    {
+        hr = E_INVALIDARG;
+    }
+    else
+    {
+        *pdwAdviseCookie = m_pSchedule->AddAdvisePacket( lRefTime, 0, HANDLE(hEvent), FALSE );
+        hr = *pdwAdviseCookie ? NOERROR : E_OUTOFMEMORY;
+    }
+    return hr;
+}
+
+
+/* Ask for an asynchronous periodic notification that a time has elapsed */
+
+STDMETHODIMP CBaseReferenceClock::AdvisePeriodic(
+    REFERENCE_TIME StartTime,         // starting at this time
+    REFERENCE_TIME PeriodTime,        // time between notifications
+    HSEMAPHORE hSemaphore,            // advise via a semaphore
+    __out DWORD_PTR *pdwAdviseCookie) // where your cookie goes
+{
+    CheckPointer(pdwAdviseCookie, E_POINTER);
+    *pdwAdviseCookie = 0;
+
+    HRESULT hr;
+    if (StartTime > 0 && PeriodTime > 0 && StartTime != MAX_TIME )
+    {
+        *pdwAdviseCookie = m_pSchedule->AddAdvisePacket( StartTime, PeriodTime, HANDLE(hSemaphore), TRUE );
+        hr = *pdwAdviseCookie ? NOERROR : E_OUTOFMEMORY;
+    }
+    else hr = E_INVALIDARG;
+
+    return hr;
+}
+
+
+STDMETHODIMP CBaseReferenceClock::Unadvise(DWORD_PTR dwAdviseCookie)
+{
+    return m_pSchedule->Unadvise(dwAdviseCookie);
+}
+
+
+REFERENCE_TIME CBaseReferenceClock::GetPrivateTime()
+{
+    CAutoLock cObjectLock(this);
+
+
+    /* If the clock has wrapped then the current time will be less than
+     * the last time we were notified so add on the extra milliseconds
+     *
+     * The time period is long enough so that the likelihood of
+     * successive calls spanning the clock cycle is not considered.
+     */
+
+    DWORD dwTime = timeGetTime();
+    {
+        m_rtPrivateTime += Int32x32To64(UNITS / MILLISECONDS, (DWORD)(dwTime - m_dwPrevSystemTime));
+        m_dwPrevSystemTime = dwTime;
+    }
+
+    return m_rtPrivateTime;
+}
+
+
+/* Adjust the current time by the input value.  This allows an
+   external time source to work out some of the latency of the clock
+   system and adjust the "current" time accordingly.  The intent is
+   that the time returned to the user is synchronised to a clock
+   source and allows drift to be catered for.
+
+   For example: if the clock source detects a drift it can pass a delta
+   to the current time rather than having to set an explicit time.
+*/
+
+STDMETHODIMP CBaseReferenceClock::SetTimeDelta(const REFERENCE_TIME & TimeDelta)
+{
+#ifdef DEBUG
+
+    // Just break if passed an improper time delta value
+    LONGLONG llDelta = TimeDelta > 0 ? TimeDelta : -TimeDelta;
+    if (llDelta > UNITS * 1000) {
+        DbgLog((LOG_TRACE, 0, TEXT("Bad Time Delta")));
+        //DebugBreak();
+    }
+
+    // We're going to calculate a "severity" for the time change. Max -1
+    // min 8.  We'll then use this as the debug logging level for a
+    // debug log message.
+    const LONG usDelta = LONG(TimeDelta/10);      // Delta in micro-secs
+
+    DWORD delta        = abs(usDelta);            // varying delta
+    // Severity == 8 - ceil(log<base 8>(abs( micro-secs delta)))
+    int   Severity     = 8;
+    while ( delta > 0 )
+    {
+        delta >>= 3;                              // div 8
+        Severity--;
+    }
+
+    // Sev == 0 => > 2 second delta!
+    DbgLog((LOG_TIMING, Severity < 0 ? 0 : Severity,
+        TEXT("Sev %2i: CSystemClock::SetTimeDelta(%8ld us) %lu -> %lu ms."),
+        Severity, usDelta, DWORD(ConvertToMilliseconds(m_rtPrivateTime)),
+        DWORD(ConvertToMilliseconds(TimeDelta+m_rtPrivateTime)) ));
+
+    // Don't want the DbgBreak to fire when running stress on debug-builds.
+    #ifdef BREAK_ON_SEVERE_TIME_DELTA
+        if (Severity < 0)
+            DbgBreakPoint(TEXT("SetTimeDelta > 16 seconds!"),
+                          TEXT(__FILE__),__LINE__);
+    #endif
+
+#endif
+
+    CAutoLock cObjectLock(this);
+    m_rtPrivateTime += TimeDelta;
+    // If time goes forwards, and we have advises, then we need to
+    // trigger the thread so that it can re-evaluate its wait time.
+    // Since we don't want the cost of the thread switches if the change
+    // is really small, only do it if clock goes forward by more than
+    // 0.5 millisecond.  If the time goes backwards, the thread will
+    // wake up "early" (relativly speaking) and will re-evaluate at
+    // that time.
+    if ( TimeDelta > 5000 && m_pSchedule->GetAdviseCount() > 0 ) TriggerThread();
+    return NOERROR;
+}
+
+// Thread stuff
+
+DWORD __stdcall CBaseReferenceClock::AdviseThreadFunction(__in LPVOID p)
+{
+    return DWORD(reinterpret_cast<CBaseReferenceClock*>(p)->AdviseThread());
+}
+
+HRESULT CBaseReferenceClock::AdviseThread()
+{
+    DWORD dwWait = INFINITE;
+
+    // The first thing we do is wait until something interesting happens
+    // (meaning a first advise or shutdown).  This prevents us calling
+    // GetPrivateTime immediately which is goodness as that is a virtual
+    // routine and the derived class may not yet be constructed.  (This
+    // thread is created in the base class constructor.)
+
+    while ( !m_bAbort )
+    {
+        // Wait for an interesting event to happen
+        DbgLog((LOG_TIMING, 3, TEXT("CBaseRefClock::AdviseThread() Delay: %lu ms"), dwWait ));
+        WaitForSingleObject(m_pSchedule->GetEvent(), dwWait);
+        if (m_bAbort) break;
+
+        // There are several reasons why we need to work from the internal
+        // time, mainly to do with what happens when time goes backwards.
+        // Mainly, it stop us looping madly if an event is just about to
+        // expire when the clock goes backward (i.e. GetTime stop for a
+        // while).
+        const REFERENCE_TIME  rtNow = GetPrivateTime();
+
+        DbgLog((LOG_TIMING, 3,
+              TEXT("CBaseRefClock::AdviseThread() Woke at = %lu ms"),
+              ConvertToMilliseconds(rtNow) ));
+
+        // We must add in a millisecond, since this is the resolution of our
+        // WaitForSingleObject timer.  Failure to do so will cause us to loop
+        // franticly for (approx) 1 a millisecond.
+        m_rtNextAdvise = m_pSchedule->Advise( 10000 + rtNow );
+        LONGLONG llWait = m_rtNextAdvise - rtNow;
+
+        ASSERT( llWait > 0 );
+
+        llWait = ConvertToMilliseconds(llWait);
+        // DON'T replace this with a max!! (The type's of these things is VERY important)
+        dwWait = (llWait > REFERENCE_TIME(UINT_MAX)) ? UINT_MAX : DWORD(llWait);
+    };
+    return NOERROR;
+}
+
+HRESULT CBaseReferenceClock::SetDefaultTimerResolution(
+        REFERENCE_TIME timerResolution // in 100ns
+    )
+{
+    CAutoLock cObjectLock(this);
+    if( 0 == timerResolution  ) {
+        if( m_TimerResolution ) {
+           timeEndPeriod( m_TimerResolution );
+           m_TimerResolution = 0;
+        }
+    } else {
+        TIMECAPS tc;
+        DWORD dwMinResolution = (TIMERR_NOERROR == timeGetDevCaps(&tc, sizeof(tc)))
+                            ? tc.wPeriodMin
+                            : 1;
+        DWORD dwResolution = max( dwMinResolution, DWORD(timerResolution / 10000) );
+        if( dwResolution != m_TimerResolution ) {
+            timeEndPeriod(m_TimerResolution);
+            m_TimerResolution = dwResolution;
+            timeBeginPeriod( m_TimerResolution );
+        }
+    }
+    return S_OK;
+}
+
+HRESULT CBaseReferenceClock::GetDefaultTimerResolution(
+        __out REFERENCE_TIME* pTimerResolution // in 100ns
+    )
+{
+    if( !pTimerResolution ) {
+        return E_POINTER;
+    }
+    CAutoLock cObjectLock(this);
+    *pTimerResolution = m_TimerResolution * 10000;
+    return S_OK;
+}

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/refclock.h

@@ -0,0 +1,184 @@
+//------------------------------------------------------------------------------
+// File: RefClock.h
+//
+// Desc: DirectShow base classes - defines the IReferenceClock interface.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __BASEREFCLOCK__
+#define __BASEREFCLOCK__
+
+#include <Schedule.h>
+
+const UINT RESOLUTION = 1;                      /* High resolution timer */
+const INT ADVISE_CACHE = 4;                     /* Default cache size */
+const LONGLONG MAX_TIME = 0x7FFFFFFFFFFFFFFF;   /* Maximum LONGLONG value */
+
+inline LONGLONG WINAPI ConvertToMilliseconds(const REFERENCE_TIME& RT)
+{
+    /* This converts an arbitrary value representing a reference time
+       into a MILLISECONDS value for use in subsequent system calls */
+
+    return (RT / (UNITS / MILLISECONDS));
+}
+
+/* This class hierarchy will support an IReferenceClock interface so
+   that an audio card (or other externally driven clock) can update the
+   system wide clock that everyone uses.
+
+   The interface will be pretty thin with probably just one update method
+   This interface has not yet been defined.
+ */
+
+/* This abstract base class implements the IReferenceClock
+ * interface.  Classes that actually provide clock signals (from
+ * whatever source) have to be derived from this class.
+ *
+ * The abstract class provides implementations for:
+ *  CUnknown support
+ *      locking support (CCritSec)
+ *  client advise code (creates a thread)
+ *
+ * Question: what can we do about quality?  Change the timer
+ * resolution to lower the system load?  Up the priority of the
+ * timer thread to force more responsive signals?
+ *
+ * During class construction we create a worker thread that is destroyed during
+ * destuction.  This thread executes a series of WaitForSingleObject calls,
+ * waking up when a command is given to the thread or the next wake up point
+ * is reached.  The wakeup points are determined by clients making Advise
+ * calls.
+ *
+ * Each advise call defines a point in time when they wish to be notified.  A
+ * periodic advise is a series of these such events.  We maintain a list of
+ * advise links and calculate when the nearest event notification is due for.
+ * We then call WaitForSingleObject with a timeout equal to this time.  The
+ * handle we wait on is used by the class to signal that something has changed
+ * and that we must reschedule the next event.  This typically happens when
+ * someone comes in and asks for an advise link while we are waiting for an
+ * event to timeout.
+ *
+ * While we are modifying the list of advise requests we
+ * are protected from interference through a critical section.  Clients are NOT
+ * advised through callbacks.  One shot clients have an event set, while
+ * periodic clients have a semaphore released for each event notification.  A
+ * semaphore allows a client to be kept up to date with the number of events
+ * actually triggered and be assured that they can't miss multiple events being
+ * set.
+ *
+ * Keeping track of advises is taken care of by the CAMSchedule class.
+ */
+
+class CBaseReferenceClock
+: public CUnknown, public IReferenceClock, public CCritSec, public IReferenceClockTimerControl 
+{
+protected:
+    virtual ~CBaseReferenceClock();     // Don't let me be created on the stack!
+public:
+    CBaseReferenceClock(__in_opt LPCTSTR pName, 
+                        __inout_opt LPUNKNOWN pUnk, 
+                        __inout HRESULT *phr, 
+                        __inout_opt CAMSchedule * pSched = 0 );
+
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __deref_out void ** ppv);
+
+    DECLARE_IUNKNOWN
+
+    /* IReferenceClock methods */
+    // Derived classes must implement GetPrivateTime().  All our GetTime
+    // does is call GetPrivateTime and then check so that time does not
+    // go backwards.  A return code of S_FALSE implies that the internal
+    // clock has gone backwards and GetTime time has halted until internal
+    // time has caught up. (Don't know if this will be much use to folk,
+    // but it seems odd not to use the return code for something useful.)
+    STDMETHODIMP GetTime(__out REFERENCE_TIME *pTime);
+    // When this is called, it sets m_rtLastGotTime to the time it returns.
+
+    /* Provide standard mechanisms for scheduling events */
+
+    /* Ask for an async notification that a time has elapsed */
+    STDMETHODIMP AdviseTime(
+        REFERENCE_TIME baseTime,        // base reference time
+        REFERENCE_TIME streamTime,      // stream offset time
+        HEVENT hEvent,                  // advise via this event
+        __out DWORD_PTR *pdwAdviseCookie// where your cookie goes
+    );
+
+    /* Ask for an asynchronous periodic notification that a time has elapsed */
+    STDMETHODIMP AdvisePeriodic(
+        REFERENCE_TIME StartTime,       // starting at this time
+        REFERENCE_TIME PeriodTime,      // time between notifications
+        HSEMAPHORE hSemaphore,          // advise via a semaphore
+        __out DWORD_PTR *pdwAdviseCookie// where your cookie goes
+    );
+
+    /* Cancel a request for notification(s) - if the notification was
+     * a one shot timer then this function doesn't need to be called
+     * as the advise is automatically cancelled, however it does no
+     * harm to explicitly cancel a one-shot advise.  It is REQUIRED that
+     * clients call Unadvise to clear a Periodic advise setting.
+     */
+
+    STDMETHODIMP Unadvise(DWORD_PTR dwAdviseCookie);
+
+    /* Methods for the benefit of derived classes or outer objects */
+
+    // GetPrivateTime() is the REAL clock.  GetTime is just a cover for
+    // it.  Derived classes will probably override this method but not
+    // GetTime() itself.
+    // The important point about GetPrivateTime() is it's allowed to go
+    // backwards.  Our GetTime() will keep returning the LastGotTime
+    // until GetPrivateTime() catches up.
+    virtual REFERENCE_TIME GetPrivateTime();
+
+    /* Provide a method for correcting drift */
+    STDMETHODIMP SetTimeDelta( const REFERENCE_TIME& TimeDelta );
+
+    CAMSchedule * GetSchedule() const { return m_pSchedule; }
+
+    // IReferenceClockTimerControl methods
+    //
+    // Setting a default of 0 disables the default of 1ms
+    STDMETHODIMP SetDefaultTimerResolution(
+        REFERENCE_TIME timerResolution // in 100ns
+    );
+    STDMETHODIMP GetDefaultTimerResolution(
+        __out REFERENCE_TIME* pTimerResolution // in 100ns
+    );
+
+private:
+    REFERENCE_TIME m_rtPrivateTime;     // Current best estimate of time
+    DWORD          m_dwPrevSystemTime;  // Last vaule we got from timeGetTime
+    REFERENCE_TIME m_rtLastGotTime;     // Last time returned by GetTime
+    REFERENCE_TIME m_rtNextAdvise;      // Time of next advise
+    UINT           m_TimerResolution;
+
+#ifdef PERF
+    int m_idGetSystemTime;
+#endif
+
+// Thread stuff
+public:
+    void TriggerThread()    // Wakes thread up.  Need to do this if
+    {                       // time to next advise needs reevaluating.
+        EXECUTE_ASSERT(SetEvent(m_pSchedule->GetEvent()));
+    }
+
+
+private:
+    BOOL           m_bAbort;            // Flag used for thread shutdown
+    HANDLE         m_hThread;           // Thread handle
+
+    HRESULT AdviseThread();             // Method in which the advise thread runs
+    static DWORD __stdcall AdviseThreadFunction(__in LPVOID); // Function used to get there
+
+protected:
+    CAMSchedule * m_pSchedule;
+
+    void Restart (IN REFERENCE_TIME rtMinTime = 0I64) ;
+};
+
+#endif
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/reftime.h

@@ -0,0 +1,116 @@
+//------------------------------------------------------------------------------
+// File: RefTime.h
+//
+// Desc: DirectShow base classes - defines CRefTime, a class that manages
+//       reference times.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation. All rights reserved.
+//------------------------------------------------------------------------------
+
+
+//
+// CRefTime
+//
+// Manage reference times.
+// Shares same data layout as REFERENCE_TIME, but adds some (nonvirtual)
+// functions providing simple comparison, conversion and arithmetic.
+//
+// A reference time (at the moment) is a unit of seconds represented in
+// 100ns units as is used in the Win32 FILETIME structure. BUT the time
+// a REFERENCE_TIME represents is NOT the time elapsed since 1/1/1601 it
+// will either be stream time or reference time depending upon context
+//
+// This class provides simple arithmetic operations on reference times
+//
+// keep non-virtual otherwise the data layout will not be the same as
+// REFERENCE_TIME
+
+
+// -----
+// note that you are safe to cast a CRefTime* to a REFERENCE_TIME*, but
+// you will need to do so explicitly
+// -----
+
+
+#ifndef __REFTIME__
+#define __REFTIME__
+
+
+const LONGLONG MILLISECONDS = (1000);            // 10 ^ 3
+const LONGLONG NANOSECONDS = (1000000000);       // 10 ^ 9
+const LONGLONG UNITS = (NANOSECONDS / 100);      // 10 ^ 7
+
+/*  Unfortunately an inline function here generates a call to __allmul
+    - even for constants!
+*/
+#define MILLISECONDS_TO_100NS_UNITS(lMs) \
+    Int32x32To64((lMs), (UNITS / MILLISECONDS))
+
+class CRefTime
+{
+public:
+
+    // *MUST* be the only data member so that this class is exactly
+    // equivalent to a REFERENCE_TIME.
+    // Also, must be *no virtual functions*
+
+    REFERENCE_TIME m_time;
+
+    inline CRefTime()
+    {
+        // default to 0 time
+        m_time = 0;
+    };
+
+    inline CRefTime(LONG msecs)
+    {
+        m_time = MILLISECONDS_TO_100NS_UNITS(msecs);
+    };
+
+    inline CRefTime(REFERENCE_TIME rt)
+    {
+        m_time = rt;
+    };
+
+    inline operator REFERENCE_TIME() const
+    {
+        return m_time;
+    };
+
+    inline CRefTime& operator=(const CRefTime& rt)
+    {
+        m_time = rt.m_time;
+        return *this;
+    };
+
+    inline CRefTime& operator=(const LONGLONG ll)
+    {
+        m_time = ll;
+        return *this;
+    };
+
+    inline CRefTime& operator+=(const CRefTime& rt)
+    {
+        return (*this = *this + rt);
+    };
+
+    inline CRefTime& operator-=(const CRefTime& rt)
+    {
+        return (*this = *this - rt);
+    };
+
+    inline LONG Millisecs(void)
+    {
+        return (LONG)(m_time / (UNITS / MILLISECONDS));
+    };
+
+    inline LONGLONG GetUnits(void)
+    {
+        return m_time;
+    };
+};
+
+const LONGLONG TimeZero = 0;
+
+#endif /* __REFTIME__ */
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/renbase.h

@@ -0,0 +1,478 @@
+//------------------------------------------------------------------------------
+// File: RenBase.h
+//
+// Desc: DirectShow base classes - defines a generic ActiveX base renderer
+//       class.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __RENBASE__
+#define __RENBASE__
+
+// Forward class declarations
+
+class CBaseRenderer;
+class CBaseVideoRenderer;
+class CRendererInputPin;
+
+// This is our input pin class that channels calls to the renderer
+
+class CRendererInputPin : public CBaseInputPin
+{
+protected:
+
+    CBaseRenderer *m_pRenderer;
+
+public:
+
+    CRendererInputPin(__inout CBaseRenderer *pRenderer,
+                      __inout HRESULT *phr,
+                      __in_opt LPCWSTR Name);
+
+    // Overriden from the base pin classes
+
+    HRESULT BreakConnect();
+    HRESULT CompleteConnect(IPin *pReceivePin);
+    HRESULT SetMediaType(const CMediaType *pmt);
+    HRESULT CheckMediaType(const CMediaType *pmt);
+    HRESULT Active();
+    HRESULT Inactive();
+
+    // Add rendering behaviour to interface functions
+
+    STDMETHODIMP QueryId(__deref_out LPWSTR *Id);
+    STDMETHODIMP EndOfStream();
+    STDMETHODIMP BeginFlush();
+    STDMETHODIMP EndFlush();
+    STDMETHODIMP Receive(IMediaSample *pMediaSample);
+
+    // Helper
+    IMemAllocator inline *Allocator() const
+    {
+        return m_pAllocator;
+    }
+};
+
+// Main renderer class that handles synchronisation and state changes
+
+class CBaseRenderer : public CBaseFilter
+{
+protected:
+
+    friend class CRendererInputPin;
+
+    friend void CALLBACK EndOfStreamTimer(UINT uID,      // Timer identifier
+                                          UINT uMsg,     // Not currently used
+                                          DWORD_PTR dwUser,  // User information
+                                          DWORD_PTR dw1,     // Windows reserved
+                                          DWORD_PTR dw2);    // Is also reserved
+
+    CRendererPosPassThru *m_pPosition;  // Media seeking pass by object
+    CAMEvent m_RenderEvent;             // Used to signal timer events
+    CAMEvent m_ThreadSignal;            // Signalled to release worker thread
+    CAMEvent m_evComplete;              // Signalled when state complete
+    BOOL m_bAbort;                      // Stop us from rendering more data
+    BOOL m_bStreaming;                  // Are we currently streaming
+    DWORD_PTR m_dwAdvise;                   // Timer advise cookie
+    IMediaSample *m_pMediaSample;       // Current image media sample
+    BOOL m_bEOS;                        // Any more samples in the stream
+    BOOL m_bEOSDelivered;               // Have we delivered an EC_COMPLETE
+    CRendererInputPin *m_pInputPin;     // Our renderer input pin object
+    CCritSec m_InterfaceLock;           // Critical section for interfaces
+    CCritSec m_RendererLock;            // Controls access to internals
+    IQualityControl * m_pQSink;         // QualityControl sink
+    BOOL m_bRepaintStatus;              // Can we signal an EC_REPAINT
+    //  Avoid some deadlocks by tracking filter during stop
+    volatile BOOL  m_bInReceive;        // Inside Receive between PrepareReceive
+                                        // And actually processing the sample
+    REFERENCE_TIME m_SignalTime;        // Time when we signal EC_COMPLETE
+    UINT m_EndOfStreamTimer;            // Used to signal end of stream
+    CCritSec m_ObjectCreationLock;      // This lock protects the creation and
+                                        // of m_pPosition and m_pInputPin.  It
+                                        // ensures that two threads cannot create
+                                        // either object simultaneously.
+
+public:
+
+    CBaseRenderer(REFCLSID RenderClass, // CLSID for this renderer
+                  __in_opt LPCTSTR pName,         // Debug ONLY description
+                  __inout_opt LPUNKNOWN pUnk,       // Aggregated owner object
+                  __inout HRESULT *phr);        // General OLE return code
+
+    ~CBaseRenderer();
+
+    // Overriden to say what interfaces we support and where
+
+    virtual HRESULT GetMediaPositionInterface(REFIID riid, __deref_out void **ppv);
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID, __deref_out void **);
+
+    virtual HRESULT SourceThreadCanWait(BOOL bCanWait);
+
+#ifdef DEBUG
+    // Debug only dump of the renderer state
+    void DisplayRendererState();
+#endif
+    virtual HRESULT WaitForRenderTime();
+    virtual HRESULT CompleteStateChange(FILTER_STATE OldState);
+
+    // Return internal information about this filter
+
+    BOOL IsEndOfStream() { return m_bEOS; };
+    BOOL IsEndOfStreamDelivered() { return m_bEOSDelivered; };
+    BOOL IsStreaming() { return m_bStreaming; };
+    void SetAbortSignal(BOOL bAbort) { m_bAbort = bAbort; };
+    virtual void OnReceiveFirstSample(IMediaSample *pMediaSample) { };
+    CAMEvent *GetRenderEvent() { return &m_RenderEvent; };
+
+    // Permit access to the transition state
+
+    void Ready() { m_evComplete.Set(); };
+    void NotReady() { m_evComplete.Reset(); };
+    BOOL CheckReady() { return m_evComplete.Check(); };
+
+    virtual int GetPinCount();
+    virtual CBasePin *GetPin(int n);
+    FILTER_STATE GetRealState();
+    void SendRepaint();
+    void SendNotifyWindow(IPin *pPin,HWND hwnd);
+    BOOL OnDisplayChange();
+    void SetRepaintStatus(BOOL bRepaint);
+
+    // Override the filter and pin interface functions
+
+    STDMETHODIMP Stop();
+    STDMETHODIMP Pause();
+    STDMETHODIMP Run(REFERENCE_TIME StartTime);
+    STDMETHODIMP GetState(DWORD dwMSecs, __out FILTER_STATE *State);
+    STDMETHODIMP FindPin(LPCWSTR Id, __deref_out IPin **ppPin);
+
+    // These are available for a quality management implementation
+
+    virtual void OnRenderStart(IMediaSample *pMediaSample);
+    virtual void OnRenderEnd(IMediaSample *pMediaSample);
+    virtual HRESULT OnStartStreaming() { return NOERROR; };
+    virtual HRESULT OnStopStreaming() { return NOERROR; };
+    virtual void OnWaitStart() { };
+    virtual void OnWaitEnd() { };
+    virtual void PrepareRender() { };
+
+#ifdef PERF
+    REFERENCE_TIME m_trRenderStart; // Just before we started drawing
+                                    // Set in OnRenderStart, Used in OnRenderEnd
+    int m_idBaseStamp;              // MSR_id for frame time stamp
+    int m_idBaseRenderTime;         // MSR_id for true wait time
+    int m_idBaseAccuracy;           // MSR_id for time frame is late (int)
+#endif
+
+    // Quality management implementation for scheduling rendering
+
+    virtual BOOL ScheduleSample(IMediaSample *pMediaSample);
+    virtual HRESULT GetSampleTimes(IMediaSample *pMediaSample,
+                                   __out REFERENCE_TIME *pStartTime,
+                                   __out REFERENCE_TIME *pEndTime);
+
+    virtual HRESULT ShouldDrawSampleNow(IMediaSample *pMediaSample,
+                                        __out REFERENCE_TIME *ptrStart,
+                                        __out REFERENCE_TIME *ptrEnd);
+
+    // Lots of end of stream complexities
+
+    void TimerCallback();
+    void ResetEndOfStreamTimer();
+    HRESULT NotifyEndOfStream();
+    virtual HRESULT SendEndOfStream();
+    virtual HRESULT ResetEndOfStream();
+    virtual HRESULT EndOfStream();
+
+    // Rendering is based around the clock
+
+    void SignalTimerFired();
+    virtual HRESULT CancelNotification();
+    virtual HRESULT ClearPendingSample();
+
+    // Called when the filter changes state
+
+    virtual HRESULT Active();
+    virtual HRESULT Inactive();
+    virtual HRESULT StartStreaming();
+    virtual HRESULT StopStreaming();
+    virtual HRESULT BeginFlush();
+    virtual HRESULT EndFlush();
+
+    // Deal with connections and type changes
+
+    virtual HRESULT BreakConnect();
+    virtual HRESULT SetMediaType(const CMediaType *pmt);
+    virtual HRESULT CompleteConnect(IPin *pReceivePin);
+
+    // These look after the handling of data samples
+
+    virtual HRESULT PrepareReceive(IMediaSample *pMediaSample);
+    virtual HRESULT Receive(IMediaSample *pMediaSample);
+    virtual BOOL HaveCurrentSample();
+    virtual IMediaSample *GetCurrentSample();
+    virtual HRESULT Render(IMediaSample *pMediaSample);
+
+    // Derived classes MUST override these
+    virtual HRESULT DoRenderSample(IMediaSample *pMediaSample) PURE;
+    virtual HRESULT CheckMediaType(const CMediaType *) PURE;
+
+    // Helper
+    void WaitForReceiveToComplete();
+};
+
+
+// CBaseVideoRenderer is a renderer class (see its ancestor class) and
+// it handles scheduling of media samples so that they are drawn at the
+// correct time by the reference clock.  It implements a degradation
+// strategy.  Possible degradation modes are:
+//    Drop frames here (only useful if the drawing takes significant time)
+//    Signal supplier (upstream) to drop some frame(s) - i.e. one-off skip.
+//    Signal supplier to change the frame rate - i.e. ongoing skipping.
+//    Or any combination of the above.
+// In order to determine what's useful to try we need to know what's going
+// on.  This is done by timing various operations (including the supplier).
+// This timing is done by using timeGetTime as it is accurate enough and
+// usually cheaper than calling the reference clock.  It also tells the
+// truth if there is an audio break and the reference clock stops.
+// We provide a number of public entry points (named OnXxxStart, OnXxxEnd)
+// which the rest of the renderer calls at significant moments.  These do
+// the timing.
+
+// the number of frames that the sliding averages are averaged over.
+// the rule is (1024*NewObservation + (AVGPERIOD-1) * PreviousAverage)/AVGPERIOD
+#define AVGPERIOD 4
+#define DO_MOVING_AVG(avg,obs) (avg = (1024*obs + (AVGPERIOD-1)*avg)/AVGPERIOD)
+// Spot the bug in this macro - I can't. but it doesn't work!
+
+class CBaseVideoRenderer : public CBaseRenderer,    // Base renderer class
+                           public IQualProp,        // Property page guff
+                           public IQualityControl   // Allow throttling
+{
+protected:
+
+    // Hungarian:
+    //     tFoo is the time Foo in mSec (beware m_tStart from filter.h)
+    //     trBar is the time Bar by the reference clock
+
+    //******************************************************************
+    // State variables to control synchronisation
+    //******************************************************************
+
+    // Control of sending Quality messages.  We need to know whether
+    // we are in trouble (e.g. frames being dropped) and where the time
+    // is being spent.
+
+    // When we drop a frame we play the next one early.
+    // The frame after that is likely to wait before drawing and counting this
+    // wait as spare time is unfair, so we count it as a zero wait.
+    // We therefore need to know whether we are playing frames early or not.
+
+    int m_nNormal;                  // The number of consecutive frames
+                                    // drawn at their normal time (not early)
+                                    // -1 means we just dropped a frame.
+
+#ifdef PERF
+    BOOL m_bDrawLateFrames;         // Don't drop any frames (debug and I'm
+                                    // not keen on people using it!)
+#endif
+
+    BOOL m_bSupplierHandlingQuality;// The response to Quality messages says
+                                    // our supplier is handling things.
+                                    // We will allow things to go extra late
+                                    // before dropping frames.  We will play
+                                    // very early after he has dropped one.
+
+    // Control of scheduling, frame dropping etc.
+    // We need to know where the time is being spent so as to tell whether
+    // we should be taking action here, signalling supplier or what.
+    // The variables are initialised to a mode of NOT dropping frames.
+    // They will tell the truth after a few frames.
+    // We typically record a start time for an event, later we get the time
+    // again and subtract to get the elapsed time, and we average this over
+    // a few frames.  The average is used to tell what mode we are in.
+
+    // Although these are reference times (64 bit) they are all DIFFERENCES
+    // between times which are small.  An int will go up to 214 secs before
+    // overflow.  Avoiding 64 bit multiplications and divisions seems
+    // worth while.
+
+
+
+    // Audio-video throttling.  If the user has turned up audio quality
+    // very high (in principle it could be any other stream, not just audio)
+    // then we can receive cries for help via the graph manager.  In this case
+    // we put in a wait for some time after rendering each frame.
+    int m_trThrottle;
+
+    // The time taken to render (i.e. BitBlt) frames controls which component
+    // needs to degrade.  If the blt is expensive, the renderer degrades.
+    // If the blt is cheap it's done anyway and the supplier degrades.
+    int m_trRenderAvg;              // Time frames are taking to blt
+    int m_trRenderLast;             // Time for last frame blt
+    int m_tRenderStart;             // Just before we started drawing (mSec)
+                                    // derived from timeGetTime.
+
+    // When frames are dropped we will play the next frame as early as we can.
+    // If it was a false alarm and the machine is fast we slide gently back to
+    // normal timing.  To do this, we record the offset showing just how early
+    // we really are.  This will normally be negative meaning early or zero.
+    int m_trEarliness;
+
+    // Target provides slow long-term feedback to try to reduce the
+    // average sync offset to zero.  Whenever a frame is actually rendered
+    // early we add a msec or two, whenever late we take off a few.
+    // We add or take off 1/32 of the error time.
+    // Eventually we should be hovering around zero.  For a really bad case
+    // where we were (say) 300mSec off, it might take 100 odd frames to
+    // settle down.  The rate of change of this is intended to be slower
+    // than any other mechanism in Quartz, thereby avoiding hunting.
+    int m_trTarget;
+
+    // The proportion of time spent waiting for the right moment to blt
+    // controls whether we bother to drop a frame or whether we reckon that
+    // we're doing well enough that we can stand a one-frame glitch.
+    int m_trWaitAvg;                // Average of last few wait times
+                                    // (actually we just average how early
+                                    // we were).  Negative here means LATE.
+
+    // The average inter-frame time.
+    // This is used to calculate the proportion of the time used by the
+    // three operations (supplying us, waiting, rendering)
+    int m_trFrameAvg;               // Average inter-frame time
+    int m_trDuration;               // duration of last frame.
+
+#ifdef PERF
+    // Performance logging identifiers
+    int m_idTimeStamp;              // MSR_id for frame time stamp
+    int m_idEarliness;              // MSR_id for earliness fudge
+    int m_idTarget;                 // MSR_id for Target fudge
+    int m_idWaitReal;               // MSR_id for true wait time
+    int m_idWait;                   // MSR_id for wait time recorded
+    int m_idFrameAccuracy;          // MSR_id for time frame is late (int)
+    int m_idRenderAvg;              // MSR_id for Render time recorded (int)
+    int m_idSchLateTime;            // MSR_id for lateness at scheduler
+    int m_idQualityRate;            // MSR_id for Quality rate requested
+    int m_idQualityTime;            // MSR_id for Quality time requested
+    int m_idDecision;               // MSR_id for decision code
+    int m_idDuration;               // MSR_id for duration of a frame
+    int m_idThrottle;               // MSR_id for audio-video throttling
+    //int m_idDebug;                  // MSR_id for trace style debugging
+    //int m_idSendQuality;          // MSR_id for timing the notifications per se
+#endif // PERF
+    REFERENCE_TIME m_trRememberStampForPerf;  // original time stamp of frame
+                                              // with no earliness fudges etc.
+#ifdef PERF
+    REFERENCE_TIME m_trRememberFrameForPerf;  // time when previous frame rendered
+
+    // debug...
+    int m_idFrameAvg;
+    int m_idWaitAvg;
+#endif
+
+    // PROPERTY PAGE
+    // This has edit fields that show the user what's happening
+    // These member variables hold these counts.
+
+    int m_cFramesDropped;           // cumulative frames dropped IN THE RENDERER
+    int m_cFramesDrawn;             // Frames since streaming started seen BY THE
+                                    // RENDERER (some may be dropped upstream)
+
+    // Next two support average sync offset and standard deviation of sync offset.
+    LONGLONG m_iTotAcc;                  // Sum of accuracies in mSec
+    LONGLONG m_iSumSqAcc;           // Sum of squares of (accuracies in mSec)
+
+    // Next two allow jitter calculation.  Jitter is std deviation of frame time.
+    REFERENCE_TIME m_trLastDraw;    // Time of prev frame (for inter-frame times)
+    LONGLONG m_iSumSqFrameTime;     // Sum of squares of (inter-frame time in mSec)
+    LONGLONG m_iSumFrameTime;            // Sum of inter-frame times in mSec
+
+    // To get performance statistics on frame rate, jitter etc, we need
+    // to record the lateness and inter-frame time.  What we actually need are the
+    // data above (sum, sum of squares and number of entries for each) but the data
+    // is generated just ahead of time and only later do we discover whether the
+    // frame was actually drawn or not.  So we have to hang on to the data
+    int m_trLate;                   // hold onto frame lateness
+    int m_trFrame;                  // hold onto inter-frame time
+
+    int m_tStreamingStart;          // if streaming then time streaming started
+                                    // else time of last streaming session
+                                    // used for property page statistics
+#ifdef PERF
+    LONGLONG m_llTimeOffset;        // timeGetTime()*10000+m_llTimeOffset==ref time
+#endif
+
+public:
+
+
+    CBaseVideoRenderer(REFCLSID RenderClass, // CLSID for this renderer
+                       __in_opt LPCTSTR pName,         // Debug ONLY description
+                       __inout_opt LPUNKNOWN pUnk,       // Aggregated owner object
+                       __inout HRESULT *phr);        // General OLE return code
+
+    ~CBaseVideoRenderer();
+
+    // IQualityControl methods - Notify allows audio-video throttling
+
+    STDMETHODIMP SetSink( IQualityControl * piqc);
+    STDMETHODIMP Notify( IBaseFilter * pSelf, Quality q);
+
+    // These provide a full video quality management implementation
+
+    void OnRenderStart(IMediaSample *pMediaSample);
+    void OnRenderEnd(IMediaSample *pMediaSample);
+    void OnWaitStart();
+    void OnWaitEnd();
+    HRESULT OnStartStreaming();
+    HRESULT OnStopStreaming();
+    void ThrottleWait();
+
+    // Handle the statistics gathering for our quality management
+
+    void PreparePerformanceData(int trLate, int trFrame);
+    virtual void RecordFrameLateness(int trLate, int trFrame);
+    virtual void OnDirectRender(IMediaSample *pMediaSample);
+    virtual HRESULT ResetStreamingTimes();
+    BOOL ScheduleSample(IMediaSample *pMediaSample);
+    HRESULT ShouldDrawSampleNow(IMediaSample *pMediaSample,
+                                __inout REFERENCE_TIME *ptrStart,
+                                __inout REFERENCE_TIME *ptrEnd);
+
+    virtual HRESULT SendQuality(REFERENCE_TIME trLate, REFERENCE_TIME trRealStream);
+    STDMETHODIMP JoinFilterGraph(__inout_opt IFilterGraph * pGraph, __in_opt LPCWSTR pName);
+
+    //
+    //  Do estimates for standard deviations for per-frame
+    //  statistics
+    //
+    //  *piResult = (llSumSq - iTot * iTot / m_cFramesDrawn - 1) /
+    //                            (m_cFramesDrawn - 2)
+    //  or 0 if m_cFramesDrawn <= 3
+    //
+    HRESULT GetStdDev(
+        int nSamples,
+        __out int *piResult,
+        LONGLONG llSumSq,
+        LONGLONG iTot
+    );
+public:
+
+    // IQualProp property page support
+
+    STDMETHODIMP get_FramesDroppedInRenderer(__out int *cFramesDropped);
+    STDMETHODIMP get_FramesDrawn(__out int *pcFramesDrawn);
+    STDMETHODIMP get_AvgFrameRate(__out int *piAvgFrameRate);
+    STDMETHODIMP get_Jitter(__out int *piJitter);
+    STDMETHODIMP get_AvgSyncOffset(__out int *piAvg);
+    STDMETHODIMP get_DevSyncOffset(__out int *piDev);
+
+    // Implement an IUnknown interface and expose IQualProp
+
+    DECLARE_IUNKNOWN
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid,__deref_out VOID **ppv);
+};
+
+#endif // __RENBASE__
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/schedule.cpp

@@ -0,0 +1,284 @@
+//------------------------------------------------------------------------------
+// File: Schedule.cpp
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1996-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+
+// DbgLog values (all on LOG_TIMING):
+//
+// 2 for schedulting, firing and shunting of events
+// 3 for wait delays and wake-up times of event thread
+// 4 for details of whats on the list when the thread awakes
+
+/* Construct & destructors */
+
+CAMSchedule::CAMSchedule( HANDLE ev )
+: CBaseObject(TEXT("CAMSchedule"))
+, head(&z, 0), z(0, MAX_TIME)
+, m_dwNextCookie(0), m_dwAdviseCount(0)
+, m_pAdviseCache(0), m_dwCacheCount(0)
+, m_ev( ev )
+{
+    head.m_dwAdviseCookie = z.m_dwAdviseCookie = 0;
+}
+
+CAMSchedule::~CAMSchedule()
+{
+    m_Serialize.Lock();
+
+    // Delete cache
+    CAdvisePacket * p = m_pAdviseCache;
+    while (p)
+    {
+        CAdvisePacket *const p_next = p->m_next;
+        delete p;
+        p = p_next;
+    }
+
+    ASSERT( m_dwAdviseCount == 0 );
+    // Better to be safe than sorry
+    if ( m_dwAdviseCount > 0 )
+    {
+        DumpLinkedList();
+        while ( !head.m_next->IsZ() )
+        {
+            head.DeleteNext();
+            --m_dwAdviseCount;
+        }
+    }
+
+    // If, in the debug version, we assert twice, it means, not only
+    // did we have left over advises, but we have also let m_dwAdviseCount
+    // get out of sync. with the number of advises actually on the list.
+    ASSERT( m_dwAdviseCount == 0 );
+
+    m_Serialize.Unlock();
+}
+
+/* Public methods */
+
+DWORD CAMSchedule::GetAdviseCount()
+{
+    // No need to lock, m_dwAdviseCount is 32bits & declared volatile
+    return m_dwAdviseCount;
+}
+
+REFERENCE_TIME CAMSchedule::GetNextAdviseTime()
+{
+    CAutoLock lck(&m_Serialize); // Need to stop the linked list from changing
+    return head.m_next->m_rtEventTime;
+}
+
+DWORD_PTR CAMSchedule::AddAdvisePacket
+( const REFERENCE_TIME & time1
+, const REFERENCE_TIME & time2
+, HANDLE h, BOOL periodic
+)
+{
+    // Since we use MAX_TIME as a sentry, we can't afford to
+    // schedule a notification at MAX_TIME
+    ASSERT( time1 < MAX_TIME );
+    DWORD_PTR Result;
+    CAdvisePacket * p;
+
+    m_Serialize.Lock();
+
+    if (m_pAdviseCache)
+    {
+        p = m_pAdviseCache;
+        m_pAdviseCache = p->m_next;
+        --m_dwCacheCount;
+    }
+    else
+    {
+        p = new CAdvisePacket();
+    }
+    if (p)
+    {
+        p->m_rtEventTime = time1; p->m_rtPeriod = time2;
+        p->m_hNotify = h; p->m_bPeriodic = periodic;
+        Result = AddAdvisePacket( p );
+    }
+    else Result = 0;
+
+    m_Serialize.Unlock();
+
+    return Result;
+}
+
+HRESULT CAMSchedule::Unadvise(DWORD_PTR dwAdviseCookie)
+{
+    HRESULT hr = S_FALSE;
+    CAdvisePacket * p_prev = &head;
+    CAdvisePacket * p_n;
+    m_Serialize.Lock();
+    while ( p_n = p_prev->Next() ) // The Next() method returns NULL when it hits z
+    {
+        if ( p_n->m_dwAdviseCookie == dwAdviseCookie )
+        {
+            Delete( p_prev->RemoveNext() );
+            --m_dwAdviseCount;
+            hr = S_OK;
+	    // Having found one cookie that matches, there should be no more
+            #ifdef DEBUG
+	       while (p_n = p_prev->Next())
+               {
+                   ASSERT(p_n->m_dwAdviseCookie != dwAdviseCookie);
+                   p_prev = p_n;
+               }
+            #endif
+            break;
+        }
+        p_prev = p_n;
+    };
+    m_Serialize.Unlock();
+    return hr;
+}
+
+REFERENCE_TIME CAMSchedule::Advise( const REFERENCE_TIME & rtTime )
+{
+    REFERENCE_TIME  rtNextTime;
+    CAdvisePacket * pAdvise;
+
+    DbgLog((LOG_TIMING, 2,
+        TEXT("CAMSchedule::Advise( %lu ms )"), ULONG(rtTime / (UNITS / MILLISECONDS))));
+
+    CAutoLock lck(&m_Serialize);
+
+    #ifdef DEBUG
+        if (DbgCheckModuleLevel(LOG_TIMING, 4)) DumpLinkedList();
+    #endif
+
+    //  Note - DON'T cache the difference, it might overflow 
+    while ( rtTime >= (rtNextTime = (pAdvise=head.m_next)->m_rtEventTime) &&
+            !pAdvise->IsZ() )
+    {
+        ASSERT(pAdvise->m_dwAdviseCookie); // If this is zero, its the head or the tail!!
+
+        ASSERT(pAdvise->m_hNotify != INVALID_HANDLE_VALUE);
+
+        if (pAdvise->m_bPeriodic == TRUE)
+        {
+            ReleaseSemaphore(pAdvise->m_hNotify,1,NULL);
+            pAdvise->m_rtEventTime += pAdvise->m_rtPeriod;
+            ShuntHead();
+        }
+        else
+        {
+            ASSERT( pAdvise->m_bPeriodic == FALSE );
+            EXECUTE_ASSERT(SetEvent(pAdvise->m_hNotify));
+            --m_dwAdviseCount;
+            Delete( head.RemoveNext() );
+        }
+
+    }
+
+    DbgLog((LOG_TIMING, 3,
+            TEXT("CAMSchedule::Advise() Next time stamp: %lu ms, for advise %lu."),
+            DWORD(rtNextTime / (UNITS / MILLISECONDS)), pAdvise->m_dwAdviseCookie ));
+
+    return rtNextTime;
+}
+
+/* Private methods */
+
+DWORD_PTR CAMSchedule::AddAdvisePacket( __inout CAdvisePacket * pPacket )
+{
+    ASSERT(pPacket->m_rtEventTime >= 0 && pPacket->m_rtEventTime < MAX_TIME);
+    ASSERT(CritCheckIn(&m_Serialize));
+
+    CAdvisePacket * p_prev = &head;
+    CAdvisePacket * p_n;
+
+    const DWORD_PTR Result = pPacket->m_dwAdviseCookie = ++m_dwNextCookie;
+    // This relies on the fact that z is a sentry with a maximal m_rtEventTime
+    for(;;p_prev = p_n)
+    {
+        p_n = p_prev->m_next;
+        if ( p_n->m_rtEventTime >= pPacket->m_rtEventTime ) break;
+    }
+    p_prev->InsertAfter( pPacket );
+    ++m_dwAdviseCount;
+
+    DbgLog((LOG_TIMING, 2, TEXT("Added advise %lu, for thread 0x%02X, scheduled at %lu"),
+    	pPacket->m_dwAdviseCookie, GetCurrentThreadId(), (pPacket->m_rtEventTime / (UNITS / MILLISECONDS)) ));
+
+    // If packet added at the head, then clock needs to re-evaluate wait time.
+    if ( p_prev == &head ) SetEvent( m_ev );
+
+    return Result;
+}
+
+void CAMSchedule::Delete( __inout CAdvisePacket * pPacket )
+{
+    if ( m_dwCacheCount >= dwCacheMax ) delete pPacket;
+    else
+    {
+        m_Serialize.Lock();
+        pPacket->m_next = m_pAdviseCache;
+        m_pAdviseCache = pPacket;
+        ++m_dwCacheCount;
+        m_Serialize.Unlock();
+    }
+}
+
+
+// Takes the head of the list & repositions it
+void CAMSchedule::ShuntHead()
+{
+    CAdvisePacket * p_prev = &head;
+    CAdvisePacket * p_n;
+
+    m_Serialize.Lock();
+    CAdvisePacket *const pPacket = head.m_next;
+
+    // This will catch both an empty list,
+    // and if somehow a MAX_TIME time gets into the list
+    // (which would also break this method).
+    ASSERT( pPacket->m_rtEventTime < MAX_TIME );
+
+    // This relies on the fact that z is a sentry with a maximal m_rtEventTime
+    for(;;p_prev = p_n)
+    {
+        p_n = p_prev->m_next;
+        if ( p_n->m_rtEventTime > pPacket->m_rtEventTime ) break;
+    }
+    // If p_prev == pPacket then we're already in the right place
+    if (p_prev != pPacket)
+    {
+        head.m_next = pPacket->m_next;
+        (p_prev->m_next = pPacket)->m_next = p_n;
+    }
+    #ifdef DEBUG
+        DbgLog((LOG_TIMING, 2, TEXT("Periodic advise %lu, shunted to %lu"),
+    	    pPacket->m_dwAdviseCookie, (pPacket->m_rtEventTime / (UNITS / MILLISECONDS)) ));
+    #endif
+    m_Serialize.Unlock();
+}
+
+
+#ifdef DEBUG
+void CAMSchedule::DumpLinkedList()
+{
+    m_Serialize.Lock();
+    int i=0;
+    DbgLog((LOG_TIMING, 1, TEXT("CAMSchedule::DumpLinkedList() this = 0x%p"), this));
+    for ( CAdvisePacket * p = &head
+        ; p
+        ; p = p->m_next         , i++
+        )	
+    {
+        DbgLog((LOG_TIMING, 1, TEXT("Advise List # %lu, Cookie %d,  RefTime %lu"),
+            i,
+	    p->m_dwAdviseCookie,
+	    p->m_rtEventTime / (UNITS / MILLISECONDS)
+            ));
+    }
+    m_Serialize.Unlock();
+}
+#endif

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/schedule.h

@@ -0,0 +1,128 @@
+//------------------------------------------------------------------------------
+// File: Schedule.h
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1996-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __CAMSchedule__
+#define __CAMSchedule__
+
+class CAMSchedule : private CBaseObject
+{
+public:
+    virtual ~CAMSchedule();
+    // ev is the event we should fire if the advise time needs re-evaluating
+    CAMSchedule( HANDLE ev );
+
+    DWORD GetAdviseCount();
+    REFERENCE_TIME GetNextAdviseTime();
+
+    // We need a method for derived classes to add advise packets, we return the cookie
+    DWORD_PTR AddAdvisePacket( const REFERENCE_TIME & time1, const REFERENCE_TIME & time2, HANDLE h, BOOL periodic );
+    // And a way to cancel
+    HRESULT Unadvise(DWORD_PTR dwAdviseCookie);
+
+    // Tell us the time please, and we'll dispatch the expired events.  We return the time of the next event.
+    // NB: The time returned will be "useless" if you start adding extra Advises.  But that's the problem of
+    // whoever is using this helper class (typically a clock).
+    REFERENCE_TIME Advise( const REFERENCE_TIME & rtTime );
+
+    // Get the event handle which will be set if advise time requires re-evaluation.
+    HANDLE GetEvent() const { return m_ev; }
+
+private:
+    // We define the nodes that will be used in our singly linked list
+    // of advise packets.  The list is ordered by time, with the
+    // elements that will expire first at the front.
+    class CAdvisePacket
+    {
+    public:
+        CAdvisePacket()
+        {}
+
+        CAdvisePacket * m_next;
+        DWORD_PTR       m_dwAdviseCookie;
+        REFERENCE_TIME  m_rtEventTime;      // Time at which event should be set
+        REFERENCE_TIME  m_rtPeriod;         // Periodic time
+        HANDLE          m_hNotify;          // Handle to event or semephore
+        BOOL            m_bPeriodic;        // TRUE => Periodic event
+
+        CAdvisePacket( __inout_opt CAdvisePacket * next, LONGLONG time ) : m_next(next), m_rtEventTime(time)
+        {}
+
+        void InsertAfter( __inout CAdvisePacket * p )
+        {
+            p->m_next = m_next;
+            m_next    = p;
+        }
+
+        int IsZ() const // That is, is it the node that represents the end of the list
+        { return m_next == 0; }
+
+        CAdvisePacket * RemoveNext()
+        {
+            CAdvisePacket *const next = m_next;
+            CAdvisePacket *const new_next = next->m_next;
+            m_next = new_next;
+            return next;
+        }
+
+        void DeleteNext()
+        {
+            delete RemoveNext();
+        }
+
+        CAdvisePacket * Next() const
+        {
+            CAdvisePacket * result = m_next;
+            if (result->IsZ()) result = 0;
+            return result;
+        }
+
+        DWORD_PTR Cookie() const
+        { return m_dwAdviseCookie; }
+    };
+
+    // Structure is:
+    // head -> elmt1 -> elmt2 -> z -> null
+    // So an empty list is:       head -> z -> null
+    // Having head & z as links makes insertaion,
+    // deletion and shunting much easier.
+    CAdvisePacket   head, z;            // z is both a tail and a sentry
+
+    volatile DWORD_PTR  m_dwNextCookie;     // Strictly increasing
+    volatile DWORD  m_dwAdviseCount;    // Number of elements on list
+
+    CCritSec        m_Serialize;
+
+    // AddAdvisePacket: adds the packet, returns the cookie (0 if failed)
+    DWORD_PTR AddAdvisePacket( __inout CAdvisePacket * pPacket );
+    // Event that we should set if the packed added above will be the next to fire.
+    const HANDLE m_ev;
+
+    // A Shunt is where we have changed the first element in the
+    // list and want it re-evaluating (i.e. repositioned) in
+    // the list.
+    void ShuntHead();
+
+    // Rather than delete advise packets, we cache them for future use
+    CAdvisePacket * m_pAdviseCache;
+    DWORD           m_dwCacheCount;
+    enum { dwCacheMax = 5 };             // Don't bother caching more than five
+
+    void Delete( __inout CAdvisePacket * pLink );// This "Delete" will cache the Link
+
+// Attributes and methods for debugging
+public:
+#ifdef DEBUG
+    void DumpLinkedList();
+#else
+    void DumpLinkedList() {}
+#endif
+
+};
+
+#endif // __CAMSchedule__

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/seekpt.cpp

@@ -0,0 +1,83 @@
+//------------------------------------------------------------------------------
+// File: SeekPT.cpp
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#include "seekpt.h"
+
+//==================================================================
+// CreateInstance
+// This goes in the factory template table to create new instances
+// If there is already a mapper instance - return that, else make one
+// and save it in a static variable so that forever after we can return that.
+//==================================================================
+
+CUnknown * CSeekingPassThru::CreateInstance(__inout_opt LPUNKNOWN pUnk, __inout HRESULT *phr)
+{
+    return new CSeekingPassThru(NAME("Seeking PassThru"),pUnk, phr);
+}
+
+
+STDMETHODIMP CSeekingPassThru::NonDelegatingQueryInterface(REFIID riid, __deref_out void ** ppv)
+{
+    if (riid == IID_ISeekingPassThru) {
+        return GetInterface((ISeekingPassThru *) this, ppv);
+    } else {
+        if (m_pPosPassThru &&
+            (riid == IID_IMediaSeeking ||
+             riid == IID_IMediaPosition)) {
+            return m_pPosPassThru->NonDelegatingQueryInterface(riid,ppv);
+        } else {
+            return CUnknown::NonDelegatingQueryInterface(riid, ppv);
+        }
+    }
+}
+
+
+CSeekingPassThru::CSeekingPassThru( __in_opt LPCTSTR pName, __inout_opt LPUNKNOWN pUnk, __inout HRESULT *phr )
+                            : CUnknown(pName, pUnk, phr),
+                            m_pPosPassThru(NULL)
+{
+}
+
+
+CSeekingPassThru::~CSeekingPassThru()
+{
+    delete m_pPosPassThru;
+}
+
+STDMETHODIMP CSeekingPassThru::Init(BOOL bRendererSeeking, IPin *pPin)
+{
+    HRESULT hr = NOERROR;
+    if (m_pPosPassThru) {
+        hr = E_FAIL;
+    } else {
+        m_pPosPassThru =
+            bRendererSeeking ?
+                new CRendererPosPassThru(
+                    NAME("Render Seeking COM object"),
+                    (IUnknown *)this,
+                    &hr,
+                    pPin) :
+                new CPosPassThru(
+                    NAME("Render Seeking COM object"),
+                    (IUnknown *)this,
+                    &hr,
+                    pPin);
+        if (!m_pPosPassThru) {
+            hr = E_OUTOFMEMORY;
+        } else {
+            if (FAILED(hr)) {
+                delete m_pPosPassThru;
+                m_pPosPassThru = NULL;
+            }
+        }
+    }
+    return hr;
+}
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/seekpt.h

@@ -0,0 +1,30 @@
+//------------------------------------------------------------------------------
+// File: SeekPT.h
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __seekpt_h__
+#define __seekpt_h__
+
+
+class CSeekingPassThru : public ISeekingPassThru, public CUnknown
+{
+public:
+    static CUnknown *CreateInstance(__inout_opt LPUNKNOWN pUnk, __inout HRESULT *phr);
+    CSeekingPassThru(__in_opt LPCTSTR pName, __inout_opt LPUNKNOWN pUnk, __inout HRESULT *phr);
+    ~CSeekingPassThru();
+
+    DECLARE_IUNKNOWN;
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __deref_out void ** ppv);
+
+    STDMETHODIMP Init(BOOL bSupportRendering, IPin *pPin);
+
+private:
+    CPosPassThru              *m_pPosPassThru;
+};
+
+#endif

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/source.cpp

@@ -0,0 +1,522 @@
+//------------------------------------------------------------------------------
+// File: Source.cpp
+//
+// Desc: DirectShow  base classes - implements CSource, which is a Quartz
+//       source filter 'template.'
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+// Locking Strategy.
+//
+// Hold the filter critical section (m_pFilter->pStateLock()) to serialise
+// access to functions. Note that, in general, this lock may be held
+// by a function when the worker thread may want to hold it. Therefore
+// if you wish to access shared state from the worker thread you will
+// need to add another critical section object. The execption is during
+// the threads processing loop, when it is safe to get the filter critical
+// section from within FillBuffer().
+
+#include <streams.h>
+
+
+//
+// CSource::Constructor
+//
+// Initialise the pin count for the filter. The user will create the pins in
+// the derived class.
+CSource::CSource(__in_opt LPCTSTR pName, __inout_opt LPUNKNOWN lpunk, CLSID clsid)
+    : CBaseFilter(pName, lpunk, &m_cStateLock, clsid),
+      m_iPins(0),
+      m_paStreams(NULL)
+{
+}
+
+CSource::CSource(__in_opt LPCTSTR pName, __inout_opt LPUNKNOWN lpunk, CLSID clsid, __inout HRESULT *phr)
+    : CBaseFilter(pName, lpunk, &m_cStateLock, clsid),
+      m_iPins(0),
+      m_paStreams(NULL)
+{
+    UNREFERENCED_PARAMETER(phr);
+}
+
+#ifdef UNICODE
+CSource::CSource(__in_opt LPCSTR pName, __inout_opt LPUNKNOWN lpunk, CLSID clsid)
+    : CBaseFilter(pName, lpunk, &m_cStateLock, clsid),
+      m_iPins(0),
+      m_paStreams(NULL)
+{
+}
+
+CSource::CSource(__in_opt LPCSTR pName, __inout_opt LPUNKNOWN lpunk, CLSID clsid, __inout HRESULT *phr)
+    : CBaseFilter(pName, lpunk, &m_cStateLock, clsid),
+      m_iPins(0),
+      m_paStreams(NULL)
+{
+    UNREFERENCED_PARAMETER(phr);
+}
+#endif
+
+//
+// CSource::Destructor
+//
+CSource::~CSource()
+{
+    /*  Free our pins and pin array */
+    while (m_iPins != 0) {
+	// deleting the pins causes them to be removed from the array...
+	delete m_paStreams[m_iPins - 1];
+    }
+
+    ASSERT(m_paStreams == NULL);
+}
+
+
+//
+//  Add a new pin
+//
+HRESULT CSource::AddPin(__in CSourceStream *pStream)
+{
+    CAutoLock lock(&m_cStateLock);
+
+    /*  Allocate space for this pin and the old ones */
+    CSourceStream **paStreams = new CSourceStream *[m_iPins + 1];
+    if (paStreams == NULL) {
+        return E_OUTOFMEMORY;
+    }
+    if (m_paStreams != NULL) {
+        CopyMemory((PVOID)paStreams, (PVOID)m_paStreams,
+                   m_iPins * sizeof(m_paStreams[0]));
+        paStreams[m_iPins] = pStream;
+        delete [] m_paStreams;
+    }
+    m_paStreams = paStreams;
+    m_paStreams[m_iPins] = pStream;
+    m_iPins++;
+    return S_OK;
+}
+
+//
+//  Remove a pin - pStream is NOT deleted
+//
+HRESULT CSource::RemovePin(__in CSourceStream *pStream)
+{
+    int i;
+    for (i = 0; i < m_iPins; i++) {
+        if (m_paStreams[i] == pStream) {
+            if (m_iPins == 1) {
+                delete [] m_paStreams;
+                m_paStreams = NULL;
+            } else {
+                /*  no need to reallocate */
+		while (++i < m_iPins)
+		    m_paStreams[i - 1] = m_paStreams[i];
+            }
+            m_iPins--;
+            return S_OK;
+        }
+    }
+    return S_FALSE;
+}
+
+//
+// FindPin
+//
+// Set *ppPin to the IPin* that has the id Id.
+// or to NULL if the Id cannot be matched.
+STDMETHODIMP CSource::FindPin(LPCWSTR Id, __deref_out IPin **ppPin)
+{
+    CheckPointer(ppPin,E_POINTER);
+    ValidateReadWritePtr(ppPin,sizeof(IPin *));
+    // The -1 undoes the +1 in QueryId and ensures that totally invalid
+    // strings (for which WstrToInt delivers 0) give a deliver a NULL pin.
+    int i = WstrToInt(Id) -1;
+    *ppPin = GetPin(i);
+    if (*ppPin!=NULL){
+        (*ppPin)->AddRef();
+        return NOERROR;
+    } else {
+        return VFW_E_NOT_FOUND;
+    }
+}
+
+//
+// FindPinNumber
+//
+// return the number of the pin with this IPin* or -1 if none
+int CSource::FindPinNumber(__in IPin *iPin) {
+    int i;
+    for (i=0; i<m_iPins; ++i) {
+        if ((IPin *)(m_paStreams[i])==iPin) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+//
+// GetPinCount
+//
+// Returns the number of pins this filter has
+int CSource::GetPinCount(void) {
+
+    CAutoLock lock(&m_cStateLock);
+    return m_iPins;
+}
+
+
+//
+// GetPin
+//
+// Return a non-addref'd pointer to pin n
+// needed by CBaseFilter
+CBasePin *CSource::GetPin(int n) {
+
+    CAutoLock lock(&m_cStateLock);
+
+    // n must be in the range 0..m_iPins-1
+    // if m_iPins>n  && n>=0 it follows that m_iPins>0
+    // which is what used to be checked (i.e. checking that we have a pin)
+    if ((n >= 0) && (n < m_iPins)) {
+
+        ASSERT(m_paStreams[n]);
+	return m_paStreams[n];
+    }
+    return NULL;
+}
+
+
+//
+
+
+// *
+// * --- CSourceStream ----
+// *
+
+//
+// Set Id to point to a CoTaskMemAlloc'd
+STDMETHODIMP CSourceStream::QueryId(__deref_out LPWSTR *Id) {
+    CheckPointer(Id,E_POINTER);
+    ValidateReadWritePtr(Id,sizeof(LPWSTR));
+
+    // We give the pins id's which are 1,2,...
+    // FindPinNumber returns -1 for an invalid pin
+    int i = 1+ m_pFilter->FindPinNumber(this);
+    if (i<1) return VFW_E_NOT_FOUND;
+    *Id = (LPWSTR)CoTaskMemAlloc(sizeof(WCHAR) * 12);
+    if (*Id==NULL) {
+       return E_OUTOFMEMORY;
+    }
+    IntToWstr(i, *Id);
+    return NOERROR;
+}
+
+
+
+//
+// CSourceStream::Constructor
+//
+// increments the number of pins present on the filter
+CSourceStream::CSourceStream(
+    __in_opt LPCTSTR pObjectName,
+    __inout HRESULT *phr,
+    __inout CSource *ps,
+    __in_opt LPCWSTR pPinName)
+    : CBaseOutputPin(pObjectName, ps, ps->pStateLock(), phr, pPinName),
+      m_pFilter(ps) {
+
+     *phr = m_pFilter->AddPin(this);
+}
+
+#ifdef UNICODE
+CSourceStream::CSourceStream(
+    __in_opt LPCSTR pObjectName,
+    __inout HRESULT *phr,
+    __inout CSource *ps,
+    __in_opt LPCWSTR pPinName)
+    : CBaseOutputPin(pObjectName, ps, ps->pStateLock(), phr, pPinName),
+      m_pFilter(ps) {
+
+     *phr = m_pFilter->AddPin(this);
+}
+#endif
+//
+// CSourceStream::Destructor
+//
+// Decrements the number of pins on this filter
+CSourceStream::~CSourceStream(void) {
+
+     m_pFilter->RemovePin(this);
+}
+
+
+//
+// CheckMediaType
+//
+// Do we support this type? Provides the default support for 1 type.
+HRESULT CSourceStream::CheckMediaType(const CMediaType *pMediaType) {
+
+    CAutoLock lock(m_pFilter->pStateLock());
+
+    CMediaType mt;
+    GetMediaType(&mt);
+
+    if (mt == *pMediaType) {
+        return NOERROR;
+    }
+
+    return E_FAIL;
+}
+
+
+//
+// GetMediaType/3
+//
+// By default we support only one type
+// iPosition indexes are 0-n
+HRESULT CSourceStream::GetMediaType(int iPosition, __inout CMediaType *pMediaType) {
+
+    CAutoLock lock(m_pFilter->pStateLock());
+
+    if (iPosition<0) {
+        return E_INVALIDARG;
+    }
+    if (iPosition>0) {
+        return VFW_S_NO_MORE_ITEMS;
+    }
+    return GetMediaType(pMediaType);
+}
+
+
+//
+// Active
+//
+// The pin is active - start up the worker thread
+HRESULT CSourceStream::Active(void) {
+
+    CAutoLock lock(m_pFilter->pStateLock());
+
+    HRESULT hr;
+
+    if (m_pFilter->IsActive()) {
+	return S_FALSE;	// succeeded, but did not allocate resources (they already exist...)
+    }
+
+    // do nothing if not connected - its ok not to connect to
+    // all pins of a source filter
+    if (!IsConnected()) {
+        return NOERROR;
+    }
+
+    hr = CBaseOutputPin::Active();
+    if (FAILED(hr)) {
+        return hr;
+    }
+
+    ASSERT(!ThreadExists());
+
+    // start the thread
+    if (!Create()) {
+        return E_FAIL;
+    }
+
+    // Tell thread to initialize. If OnThreadCreate Fails, so does this.
+    hr = Init();
+    if (FAILED(hr))
+	return hr;
+
+    return Pause();
+}
+
+
+//
+// Inactive
+//
+// Pin is inactive - shut down the worker thread
+// Waits for the worker to exit before returning.
+HRESULT CSourceStream::Inactive(void) {
+
+    CAutoLock lock(m_pFilter->pStateLock());
+
+    HRESULT hr;
+
+    // do nothing if not connected - its ok not to connect to
+    // all pins of a source filter
+    if (!IsConnected()) {
+        return NOERROR;
+    }
+
+    // !!! need to do this before trying to stop the thread, because
+    // we may be stuck waiting for our own allocator!!!
+
+    hr = CBaseOutputPin::Inactive();  // call this first to Decommit the allocator
+    if (FAILED(hr)) {
+	return hr;
+    }
+
+    if (ThreadExists()) {
+	hr = Stop();
+
+	if (FAILED(hr)) {
+	    return hr;
+	}
+
+	hr = Exit();
+	if (FAILED(hr)) {
+	    return hr;
+	}
+
+	Close();	// Wait for the thread to exit, then tidy up.
+    }
+
+    // hr = CBaseOutputPin::Inactive();  // call this first to Decommit the allocator
+    //if (FAILED(hr)) {
+    //	return hr;
+    //}
+
+    return NOERROR;
+}
+
+
+//
+// ThreadProc
+//
+// When this returns the thread exits
+// Return codes > 0 indicate an error occured
+DWORD CSourceStream::ThreadProc(void) {
+
+    HRESULT hr;  // the return code from calls
+    Command com;
+
+    do {
+	com = GetRequest();
+	if (com != CMD_INIT) {
+	    DbgLog((LOG_ERROR, 1, TEXT("Thread expected init command")));
+	    Reply((DWORD) E_UNEXPECTED);
+	}
+    } while (com != CMD_INIT);
+
+    DbgLog((LOG_TRACE, 1, TEXT("CSourceStream worker thread initializing")));
+
+    hr = OnThreadCreate(); // perform set up tasks
+    if (FAILED(hr)) {
+        DbgLog((LOG_ERROR, 1, TEXT("CSourceStream::OnThreadCreate failed. Aborting thread.")));
+        OnThreadDestroy();
+	Reply(hr);	// send failed return code from OnThreadCreate
+        return 1;
+    }
+
+    // Initialisation suceeded
+    Reply(NOERROR);
+
+    Command cmd;
+    do {
+	cmd = GetRequest();
+
+	switch (cmd) {
+
+	case CMD_EXIT:
+	    Reply(NOERROR);
+	    break;
+
+	case CMD_RUN:
+	    DbgLog((LOG_ERROR, 1, TEXT("CMD_RUN received before a CMD_PAUSE???")));
+	    // !!! fall through???
+	
+	case CMD_PAUSE:
+	    Reply(NOERROR);
+	    DoBufferProcessingLoop();
+	    break;
+
+	case CMD_STOP:
+	    Reply(NOERROR);
+	    break;
+
+	default:
+	    DbgLog((LOG_ERROR, 1, TEXT("Unknown command %d received!"), cmd));
+	    Reply((DWORD) E_NOTIMPL);
+	    break;
+	}
+    } while (cmd != CMD_EXIT);
+
+    hr = OnThreadDestroy();	// tidy up.
+    if (FAILED(hr)) {
+        DbgLog((LOG_ERROR, 1, TEXT("CSourceStream::OnThreadDestroy failed. Exiting thread.")));
+        return 1;
+    }
+
+    DbgLog((LOG_TRACE, 1, TEXT("CSourceStream worker thread exiting")));
+    return 0;
+}
+
+
+//
+// DoBufferProcessingLoop
+//
+// Grabs a buffer and calls the users processing function.
+// Overridable, so that different delivery styles can be catered for.
+HRESULT CSourceStream::DoBufferProcessingLoop(void) {
+
+    Command com;
+
+    OnThreadStartPlay();
+
+    do {
+	while (!CheckRequest(&com)) {
+
+	    IMediaSample *pSample;
+
+	    HRESULT hr = GetDeliveryBuffer(&pSample,NULL,NULL,0);
+	    if (FAILED(hr)) {
+                Sleep(1);
+		continue;	// go round again. Perhaps the error will go away
+			    // or the allocator is decommited & we will be asked to
+			    // exit soon.
+	    }
+
+	    // Virtual function user will override.
+	    hr = FillBuffer(pSample);
+
+	    if (hr == S_OK) {
+		hr = Deliver(pSample);
+                pSample->Release();
+
+                // downstream filter returns S_FALSE if it wants us to
+                // stop or an error if it's reporting an error.
+                if(hr != S_OK)
+                {
+                  DbgLog((LOG_TRACE, 2, TEXT("Deliver() returned %08x; stopping"), hr));
+                  return S_OK;
+                }
+
+	    } else if (hr == S_FALSE) {
+                // derived class wants us to stop pushing data
+		pSample->Release();
+		DeliverEndOfStream();
+		return S_OK;
+	    } else {
+                // derived class encountered an error
+                pSample->Release();
+		DbgLog((LOG_ERROR, 1, TEXT("Error %08lX from FillBuffer!!!"), hr));
+                DeliverEndOfStream();
+                m_pFilter->NotifyEvent(EC_ERRORABORT, hr, 0);
+                return hr;
+	    }
+
+            // all paths release the sample
+	}
+
+        // For all commands sent to us there must be a Reply call!
+
+	if (com == CMD_RUN || com == CMD_PAUSE) {
+	    Reply(NOERROR);
+	} else if (com != CMD_STOP) {
+	    Reply((DWORD) E_UNEXPECTED);
+	    DbgLog((LOG_ERROR, 1, TEXT("Unexpected command!!!")));
+	}
+    } while (com != CMD_STOP);
+
+    return S_FALSE;
+}
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/source.h

@@ -0,0 +1,172 @@
+//------------------------------------------------------------------------------
+// File: Source.h
+//
+// Desc: DirectShow base classes - defines classes to simplify creation of
+//       ActiveX source filters that support continuous generation of data.
+//       No support is provided for IMediaControl or IMediaPosition.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+//
+// Derive your source filter from CSource.
+// During construction either:
+//    Create some CSourceStream objects to manage your pins
+//    Provide the user with a means of doing so eg, an IPersistFile interface.
+//
+// CSource provides:
+//    IBaseFilter interface management
+//    IMediaFilter interface management, via CBaseFilter
+//    Pin counting for CBaseFilter
+//
+// Derive a class from CSourceStream to manage your output pin types
+//  Implement GetMediaType/1 to return the type you support. If you support multiple
+//   types then overide GetMediaType/3, CheckMediaType and GetMediaTypeCount.
+//  Implement Fillbuffer() to put data into one buffer.
+//
+// CSourceStream provides:
+//    IPin management via CBaseOutputPin
+//    Worker thread management
+
+#ifndef __CSOURCE__
+#define __CSOURCE__
+
+class CSourceStream;  // The class that will handle each pin
+
+
+//
+// CSource
+//
+// Override construction to provide a means of creating
+// CSourceStream derived objects - ie a way of creating pins.
+class CSource : public CBaseFilter {
+public:
+
+    CSource(__in_opt LPCTSTR pName, __inout_opt LPUNKNOWN lpunk, CLSID clsid, __inout HRESULT *phr);
+    CSource(__in_opt LPCTSTR pName, __inout_opt LPUNKNOWN lpunk, CLSID clsid);
+#ifdef UNICODE
+    CSource(__in_opt LPCSTR pName, __inout_opt LPUNKNOWN lpunk, CLSID clsid, __inout HRESULT *phr);
+    CSource(__in_opt LPCSTR pName, __inout_opt LPUNKNOWN lpunk, CLSID clsid);
+#endif
+    ~CSource();
+
+    int       GetPinCount(void);
+    CBasePin *GetPin(int n);
+
+    // -- Utilities --
+
+    CCritSec*	pStateLock(void) { return &m_cStateLock; }	// provide our critical section
+
+    HRESULT     AddPin(__in CSourceStream *);
+    HRESULT     RemovePin(__in CSourceStream *);
+
+    STDMETHODIMP FindPin(
+        LPCWSTR Id,
+        __deref_out IPin ** ppPin
+    );
+
+    int FindPinNumber(__in IPin *iPin);
+    
+protected:
+
+    int             m_iPins;       // The number of pins on this filter. Updated by CSourceStream
+    	   			   // constructors & destructors.
+    CSourceStream **m_paStreams;   // the pins on this filter.
+
+    CCritSec m_cStateLock;	// Lock this to serialize function accesses to the filter state
+
+};
+
+
+//
+// CSourceStream
+//
+// Use this class to manage a stream of data that comes from a
+// pin.
+// Uses a worker thread to put data on the pin.
+class CSourceStream : public CAMThread, public CBaseOutputPin {
+public:
+
+    CSourceStream(__in_opt LPCTSTR pObjectName,
+                  __inout HRESULT *phr,
+                  __inout CSource *pms,
+                  __in_opt LPCWSTR pName);
+#ifdef UNICODE
+    CSourceStream(__in_opt LPCSTR pObjectName,
+                  __inout HRESULT *phr,
+                  __inout CSource *pms,
+                  __in_opt LPCWSTR pName);
+#endif
+    virtual ~CSourceStream(void);  // virtual destructor ensures derived class destructors are called too.
+
+protected:
+
+    CSource *m_pFilter;	// The parent of this stream
+
+    // *
+    // * Data Source
+    // *
+    // * The following three functions: FillBuffer, OnThreadCreate/Destroy, are
+    // * called from within the ThreadProc. They are used in the creation of
+    // * the media samples this pin will provide
+    // *
+
+    // Override this to provide the worker thread a means
+    // of processing a buffer
+    virtual HRESULT FillBuffer(IMediaSample *pSamp) PURE;
+
+    // Called as the thread is created/destroyed - use to perform
+    // jobs such as start/stop streaming mode
+    // If OnThreadCreate returns an error the thread will exit.
+    virtual HRESULT OnThreadCreate(void) {return NOERROR;};
+    virtual HRESULT OnThreadDestroy(void) {return NOERROR;};
+    virtual HRESULT OnThreadStartPlay(void) {return NOERROR;};
+
+    // *
+    // * Worker Thread
+    // *
+
+    HRESULT Active(void);    // Starts up the worker thread
+    HRESULT Inactive(void);  // Exits the worker thread.
+
+public:
+    // thread commands
+    enum Command {CMD_INIT, CMD_PAUSE, CMD_RUN, CMD_STOP, CMD_EXIT};
+    HRESULT Init(void) { return CallWorker(CMD_INIT); }
+    HRESULT Exit(void) { return CallWorker(CMD_EXIT); }
+    HRESULT Run(void) { return CallWorker(CMD_RUN); }
+    HRESULT Pause(void) { return CallWorker(CMD_PAUSE); }
+    HRESULT Stop(void) { return CallWorker(CMD_STOP); }
+
+protected:
+    Command GetRequest(void) { return (Command) CAMThread::GetRequest(); }
+    BOOL    CheckRequest(Command *pCom) { return CAMThread::CheckRequest( (DWORD *) pCom); }
+
+    // override these if you want to add thread commands
+    virtual DWORD ThreadProc(void);  		// the thread function
+
+    virtual HRESULT DoBufferProcessingLoop(void);    // the loop executed whilst running
+
+
+    // *
+    // * AM_MEDIA_TYPE support
+    // *
+
+    // If you support more than one media type then override these 2 functions
+    virtual HRESULT CheckMediaType(const CMediaType *pMediaType);
+    virtual HRESULT GetMediaType(int iPosition, __inout CMediaType *pMediaType);  // List pos. 0-n
+
+    // If you support only one type then override this fn.
+    // This will only be called by the default implementations
+    // of CheckMediaType and GetMediaType(int, CMediaType*)
+    // You must override this fn. or the above 2!
+    virtual HRESULT GetMediaType(__inout CMediaType *pMediaType) {return E_UNEXPECTED;}
+
+    STDMETHODIMP QueryId(
+        __deref_out LPWSTR * Id
+    );
+};
+
+#endif // __CSOURCE__
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/streams.h

@@ -0,0 +1,202 @@
+//------------------------------------------------------------------------------
+// File: Streams.h
+//
+// Desc: DirectShow base classes - defines overall streams architecture.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __STREAMS__
+#define __STREAMS__
+
+#ifdef	_MSC_VER
+// disable some level-4 warnings, use #pragma warning(enable:###) to re-enable
+#pragma warning(disable:4100) // warning C4100: unreferenced formal parameter
+#pragma warning(disable:4201) // warning C4201: nonstandard extension used : nameless struct/union
+#pragma warning(disable:4511) // warning C4511: copy constructor could not be generated
+#pragma warning(disable:4512) // warning C4512: assignment operator could not be generated
+#pragma warning(disable:4514) // warning C4514: "unreferenced inline function has been removed"
+
+#if _MSC_VER>=1100
+#define AM_NOVTABLE __declspec(novtable)
+#else
+#define AM_NOVTABLE
+#endif
+#endif	// MSC_VER
+
+
+// Because of differences between Visual C++ and older Microsoft SDKs,
+// you may have defined _DEBUG without defining DEBUG.  This logic
+// ensures that both will be set if Visual C++ sets _DEBUG.
+#ifdef _DEBUG
+#ifndef DEBUG
+#define DEBUG
+#endif
+#endif
+
+
+#include <windows.h>
+#include <windowsx.h>
+#include <olectl.h>
+#include <ddraw.h>
+#include <mmsystem.h>
+
+
+#ifndef NUMELMS
+#if _WIN32_WINNT < 0x0600
+   #define NUMELMS(aa) (sizeof(aa)/sizeof((aa)[0]))
+#else
+   #define NUMELMS(aa) ARRAYSIZE(aa)
+#endif   
+#endif
+
+///////////////////////////////////////////////////////////////////////////
+// The following definitions come from the Platform SDK and are required if
+// the applicaiton is being compiled with the headers from Visual C++ 6.0.
+/////////////////////////////////////////////////// ////////////////////////
+#ifndef InterlockedExchangePointer
+	#define InterlockedExchangePointer(Target, Value) \
+   (PVOID)InterlockedExchange((PLONG)(Target), (LONG)(Value))
+#endif
+
+#ifndef _WAVEFORMATEXTENSIBLE_
+#define _WAVEFORMATEXTENSIBLE_
+typedef struct {
+    WAVEFORMATEX    Format;
+    union {
+        WORD wValidBitsPerSample;       /* bits of precision  */
+        WORD wSamplesPerBlock;          /* valid if wBitsPerSample==0 */
+        WORD wReserved;                 /* If neither applies, set to zero. */
+    } Samples;
+    DWORD           dwChannelMask;      /* which channels are */
+                                        /* present in stream  */
+    GUID            SubFormat;
+} WAVEFORMATEXTENSIBLE, *PWAVEFORMATEXTENSIBLE;
+#endif // !_WAVEFORMATEXTENSIBLE_
+
+#if !defined(WAVE_FORMAT_EXTENSIBLE)
+#define  WAVE_FORMAT_EXTENSIBLE                 0xFFFE
+#endif // !defined(WAVE_FORMAT_EXTENSIBLE)
+
+#ifndef GetWindowLongPtr
+  #define GetWindowLongPtrA   GetWindowLongA
+  #define GetWindowLongPtrW   GetWindowLongW
+  #ifdef UNICODE
+    #define GetWindowLongPtr  GetWindowLongPtrW
+  #else
+    #define GetWindowLongPtr  GetWindowLongPtrA
+  #endif // !UNICODE
+#endif // !GetWindowLongPtr
+
+#ifndef SetWindowLongPtr
+  #define SetWindowLongPtrA   SetWindowLongA
+  #define SetWindowLongPtrW   SetWindowLongW
+  #ifdef UNICODE
+    #define SetWindowLongPtr  SetWindowLongPtrW
+  #else
+    #define SetWindowLongPtr  SetWindowLongPtrA
+  #endif // !UNICODE
+#endif // !SetWindowLongPtr
+
+#ifndef GWLP_WNDPROC
+  #define GWLP_WNDPROC        (-4)
+#endif
+#ifndef GWLP_HINSTANCE
+  #define GWLP_HINSTANCE      (-6)
+#endif
+#ifndef GWLP_HWNDPARENT
+  #define GWLP_HWNDPARENT     (-8)
+#endif
+#ifndef GWLP_USERDATA
+  #define GWLP_USERDATA       (-21)
+#endif
+#ifndef GWLP_ID
+  #define GWLP_ID             (-12)
+#endif
+#ifndef DWLP_MSGRESULT
+  #define DWLP_MSGRESULT  0
+#endif
+#ifndef DWLP_DLGPROC 
+  #define DWLP_DLGPROC    DWLP_MSGRESULT + sizeof(LRESULT)
+#endif
+#ifndef DWLP_USER
+  #define DWLP_USER       DWLP_DLGPROC + sizeof(DLGPROC)
+#endif
+
+
+#pragma warning(push)
+#pragma warning(disable: 4312 4244)
+// _GetWindowLongPtr
+// Templated version of GetWindowLongPtr, to suppress spurious compiler warning.
+template <class T>
+T _GetWindowLongPtr(HWND hwnd, int nIndex)
+{
+    return (T)GetWindowLongPtr(hwnd, nIndex);
+}
+
+// _SetWindowLongPtr
+// Templated version of SetWindowLongPtr, to suppress spurious compiler warning.
+template <class T>
+LONG_PTR _SetWindowLongPtr(HWND hwnd, int nIndex, T p)
+{
+    return SetWindowLongPtr(hwnd, nIndex, (LONG_PTR)p);
+}
+#pragma warning(pop)
+
+///////////////////////////////////////////////////////////////////////////
+// End Platform SDK definitions
+///////////////////////////////////////////////////////////////////////////
+
+
+#include <strmif.h>     // Generated IDL header file for streams interfaces
+#include <intsafe.h>    // required by amvideo.h
+
+#include <reftime.h>    // Helper class for REFERENCE_TIME management
+#include <wxdebug.h>    // Debug support for logging and ASSERTs
+#include <amvideo.h>    // ActiveMovie video interfaces and definitions
+//include amaudio.h explicitly if you need it.  it requires the DX SDK.
+//#include <amaudio.h>    // ActiveMovie audio interfaces and definitions
+#include <wxutil.h>     // General helper classes for threads etc
+#include <combase.h>    // Base COM classes to support IUnknown
+#include <dllsetup.h>   // Filter registration support functions
+#include <measure.h>    // Performance measurement
+#include <comlite.h>    // Light weight com function prototypes
+
+#include <cache.h>      // Simple cache container class
+#include <wxlist.h>     // Non MFC generic list class
+#include <msgthrd.h>	// CMsgThread
+#include <mtype.h>      // Helper class for managing media types
+#include <fourcc.h>     // conversions between FOURCCs and GUIDs
+#include <control.h>    // generated from control.odl
+#include <ctlutil.h>    // control interface utility classes
+#include <evcode.h>     // event code definitions
+#include <amfilter.h>   // Main streams architecture class hierachy
+#include <transfrm.h>   // Generic transform filter
+#include <transip.h>    // Generic transform-in-place filter
+#include <uuids.h>      // declaration of type GUIDs and well-known clsids
+#include <source.h>	// Generic source filter
+#include <outputq.h>    // Output pin queueing
+#include <errors.h>     // HRESULT status and error definitions
+#include <renbase.h>    // Base class for writing ActiveX renderers
+#include <winutil.h>    // Helps with filters that manage windows
+#include <winctrl.h>    // Implements the IVideoWindow interface
+#include <videoctl.h>   // Specifically video related classes
+#include <refclock.h>	// Base clock class
+#include <sysclock.h>	// System clock
+#include <pstream.h>    // IPersistStream helper class
+#include <vtrans.h>     // Video Transform Filter base class
+#include <amextra.h>
+#include <cprop.h>      // Base property page class
+#include <strmctl.h>    // IAMStreamControl support
+#include <edevdefs.h>   // External device control interface defines
+#include <audevcod.h>   // audio filter device error event codes
+
+
+
+#else
+    #ifdef DEBUG
+    #pragma message("STREAMS.H included TWICE")
+    #endif
+#endif // __STREAMS__
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/strmctl.cpp

@@ -0,0 +1,402 @@
+//------------------------------------------------------------------------------
+// File: StrmCtl.cpp
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1996-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#include <strmctl.h>
+
+CBaseStreamControl::CBaseStreamControl(__inout HRESULT *phr)
+: m_StreamState(STREAM_FLOWING)
+, m_StreamStateOnStop(STREAM_FLOWING) // means no pending stop
+, m_tStartTime(MAX_TIME)
+, m_tStopTime(MAX_TIME)
+, m_StreamEvent(FALSE, phr)
+, m_dwStartCookie(0)
+, m_dwStopCookie(0)
+, m_pRefClock(NULL)
+, m_FilterState(State_Stopped)
+, m_bIsFlushing(FALSE)
+, m_bStopSendExtra(FALSE)
+{}
+
+CBaseStreamControl::~CBaseStreamControl()
+{
+    // Make sure we release the clock.
+    SetSyncSource(NULL);
+    return;
+}
+
+
+STDMETHODIMP CBaseStreamControl::StopAt(const REFERENCE_TIME * ptStop, BOOL bSendExtra, DWORD dwCookie)
+{
+    CAutoLock lck(&m_CritSec);
+    m_bStopSendExtra = FALSE;	// reset
+    m_bStopExtraSent = FALSE;
+    if (ptStop)
+    {
+        if (*ptStop == MAX_TIME)
+        {
+            DbgLog((LOG_TRACE,2,TEXT("StopAt: Cancel stop")));
+            CancelStop();
+	    // If there's now a command to start in the future, we assume
+	    // they want to be stopped when the graph is first run
+	    if (m_FilterState == State_Stopped && m_tStartTime < MAX_TIME) {
+	        m_StreamState = STREAM_DISCARDING;
+                DbgLog((LOG_TRACE,2,TEXT("graph will begin by DISCARDING")));
+	    }
+            return NOERROR;
+        }
+        DbgLog((LOG_TRACE,2,TEXT("StopAt: %dms extra=%d"),
+				(int)(*ptStop/10000), bSendExtra));
+	// if the first command is to stop in the future, then we assume they
+        // want to be started when the graph is first run
+	if (m_FilterState == State_Stopped && m_tStartTime > *ptStop) {
+	    m_StreamState = STREAM_FLOWING;
+            DbgLog((LOG_TRACE,2,TEXT("graph will begin by FLOWING")));
+	}
+        m_bStopSendExtra = bSendExtra;
+        m_tStopTime = *ptStop;
+        m_dwStopCookie = dwCookie;
+        m_StreamStateOnStop = STREAM_DISCARDING;
+    }
+    else
+    {
+        DbgLog((LOG_TRACE,2,TEXT("StopAt: now")));
+	// sending an extra frame when told to stop now would mess people up
+        m_bStopSendExtra = FALSE;
+        m_tStopTime = MAX_TIME;
+        m_dwStopCookie = 0;
+        m_StreamState = STREAM_DISCARDING;
+        m_StreamStateOnStop = STREAM_FLOWING;	// no pending stop
+    }
+    // we might change our mind what to do with a sample we're blocking
+    m_StreamEvent.Set();
+    return NOERROR;
+}
+
+STDMETHODIMP CBaseStreamControl::StartAt
+( const REFERENCE_TIME *ptStart, DWORD dwCookie )
+{
+    CAutoLock lck(&m_CritSec);
+    if (ptStart)
+    {
+        if (*ptStart == MAX_TIME)
+        {
+            DbgLog((LOG_TRACE,2,TEXT("StartAt: Cancel start")));
+            CancelStart();
+	    // If there's now a command to stop in the future, we assume
+	    // they want to be started when the graph is first run
+	    if (m_FilterState == State_Stopped && m_tStopTime < MAX_TIME) {
+                DbgLog((LOG_TRACE,2,TEXT("graph will begin by FLOWING")));
+	        m_StreamState = STREAM_FLOWING;
+	    }
+            return NOERROR;
+        }
+        DbgLog((LOG_TRACE,2,TEXT("StartAt: %dms"), (int)(*ptStart/10000)));
+	// if the first command is to start in the future, then we assume they
+        // want to be stopped when the graph is first run
+	if (m_FilterState == State_Stopped && m_tStopTime >= *ptStart) {
+            DbgLog((LOG_TRACE,2,TEXT("graph will begin by DISCARDING")));
+	    m_StreamState = STREAM_DISCARDING;
+	}
+        m_tStartTime = *ptStart;
+        m_dwStartCookie = dwCookie;
+        // if (m_tStopTime == m_tStartTime) CancelStop();
+    }
+    else
+    {
+        DbgLog((LOG_TRACE,2,TEXT("StartAt: now")));
+        m_tStartTime = MAX_TIME;
+        m_dwStartCookie = 0;
+        m_StreamState = STREAM_FLOWING;
+    }
+    // we might change our mind what to do with a sample we're blocking
+    m_StreamEvent.Set();
+    return NOERROR;
+}
+
+//  Retrieve information about current settings
+STDMETHODIMP CBaseStreamControl::GetInfo(__out AM_STREAM_INFO *pInfo)
+{
+    if (pInfo == NULL)
+	return E_POINTER;
+
+    pInfo->tStart = m_tStartTime;
+    pInfo->tStop  = m_tStopTime;
+    pInfo->dwStartCookie = m_dwStartCookie;
+    pInfo->dwStopCookie  = m_dwStopCookie;
+    pInfo->dwFlags = m_bStopSendExtra ? AM_STREAM_INFO_STOP_SEND_EXTRA : 0;
+    pInfo->dwFlags |= m_tStartTime == MAX_TIME ? 0 : AM_STREAM_INFO_START_DEFINED;
+    pInfo->dwFlags |= m_tStopTime == MAX_TIME ? 0 : AM_STREAM_INFO_STOP_DEFINED;
+    switch (m_StreamState) {
+    default:
+        DbgBreak("Invalid stream state");
+    case STREAM_FLOWING:
+        break;
+    case STREAM_DISCARDING:
+        pInfo->dwFlags |= AM_STREAM_INFO_DISCARDING;
+        break;
+    }
+    return S_OK;
+}
+
+
+void CBaseStreamControl::ExecuteStop()
+{
+    ASSERT(CritCheckIn(&m_CritSec));
+    m_StreamState = m_StreamStateOnStop;
+    if (m_dwStopCookie && m_pSink) {
+	DbgLog((LOG_TRACE,2,TEXT("*sending EC_STREAM_CONTROL_STOPPED (%d)"),
+							m_dwStopCookie));
+        m_pSink->Notify(EC_STREAM_CONTROL_STOPPED, (LONG_PTR)this, m_dwStopCookie);
+    }
+    CancelStop(); // This will do the tidy up
+}
+
+void CBaseStreamControl::ExecuteStart()
+{
+    ASSERT(CritCheckIn(&m_CritSec));
+    m_StreamState = STREAM_FLOWING;
+    if (m_dwStartCookie) {
+	DbgLog((LOG_TRACE,2,TEXT("*sending EC_STREAM_CONTROL_STARTED (%d)"),
+							m_dwStartCookie));
+        m_pSink->Notify(EC_STREAM_CONTROL_STARTED, (LONG_PTR)this, m_dwStartCookie);
+    }
+    CancelStart(); // This will do the tidy up
+}
+
+void CBaseStreamControl::CancelStop()
+{
+    ASSERT(CritCheckIn(&m_CritSec));
+    m_tStopTime = MAX_TIME;
+    m_dwStopCookie = 0;
+    m_StreamStateOnStop = STREAM_FLOWING;
+}
+
+void CBaseStreamControl::CancelStart()
+{
+    ASSERT(CritCheckIn(&m_CritSec));
+    m_tStartTime = MAX_TIME;
+    m_dwStartCookie = 0;
+}
+
+
+// This guy will return one of the three StreamControlState's.  Here's what the caller
+// should do for each one:
+//
+// STREAM_FLOWING:      Proceed as usual (render or pass the sample on)
+// STREAM_DISCARDING:   Calculate the time 'til *pSampleStart and wait that long
+//                      for the event handle (GetStreamEventHandle()).  If the
+//                      wait expires, throw the sample away.  If the event
+//			fires, call me back, I've changed my mind.
+//			I use pSampleStart (not Stop) so that live sources don't
+// 			block for the duration of their samples, since the clock
+//			will always read approximately pSampleStart when called
+
+
+// All through this code, you'll notice the following rules:
+// - When start and stop time are the same, it's as if start was first
+// - An event is considered inside the sample when it's >= sample start time
+//   but < sample stop time
+// - if any part of the sample is supposed to be sent, we'll send the whole
+//   thing since we don't break it into smaller pieces
+// - If we skip over a start or stop without doing it, we still signal the event
+//   and reset ourselves in case somebody's waiting for the event, and to make
+//   sure we notice that the event is past and should be forgotten
+// Here are the 19 cases that have to be handled (x=start o=stop <-->=sample):
+//
+// 1.	xo<-->		start then stop
+// 2.	ox<-->		stop then start
+// 3.	 x<o->		start
+// 4.	 o<x->		stop then start
+// 5.	 x<-->o		start
+// 6.	 o<-->x		stop
+// 7.	  <x->o		start
+// 8.	  <o->x		no change
+// 9.	  <xo>		start
+// 10.	  <ox>		stop then start
+// 11.	  <-->xo	no change
+// 12.	  <-->ox	no change
+// 13.	 x<-->		start
+// 14.    <x->		start
+// 15.    <-->x		no change
+// 16.   o<-->		stop
+// 17.	  <o->		no change
+// 18.	  <-->o		no change
+// 19.    <-->		no change
+
+
+enum CBaseStreamControl::StreamControlState CBaseStreamControl::CheckSampleTimes
+( __in const REFERENCE_TIME * pSampleStart, __in const REFERENCE_TIME * pSampleStop )
+{
+    CAutoLock lck(&m_CritSec);
+
+    ASSERT(!m_bIsFlushing);
+    ASSERT(pSampleStart && pSampleStop);
+
+    // Don't ask me how I came up with the code below to handle all 19 cases
+    // - DannyMi
+
+    if (m_tStopTime >= *pSampleStart)
+    {
+        if (m_tStartTime >= *pSampleStop)
+	    return m_StreamState;		// cases  8 11 12 15 17 18 19
+	if (m_tStopTime < m_tStartTime)
+	    ExecuteStop();			// case 10
+	ExecuteStart();                         // cases 3 5 7 9 13 14
+	return m_StreamState;
+    }
+
+    if (m_tStartTime >= *pSampleStop)
+    {
+        ExecuteStop();                          // cases 6 16
+        return m_StreamState;
+    }
+
+    if (m_tStartTime <= m_tStopTime)
+    {
+	ExecuteStart();
+	ExecuteStop();
+        return m_StreamState;		// case 1
+    }
+    else
+    {
+	ExecuteStop();
+	ExecuteStart();
+        return m_StreamState;		// cases 2 4
+    }
+}
+
+
+enum CBaseStreamControl::StreamControlState CBaseStreamControl::CheckStreamState( IMediaSample * pSample )
+{
+
+    REFERENCE_TIME rtBufferStart, rtBufferStop;
+    const BOOL bNoBufferTimes =
+              pSample == NULL ||
+              FAILED(pSample->GetTime(&rtBufferStart, &rtBufferStop));
+
+    StreamControlState state;
+    LONG lWait;
+
+    do
+        {
+ 	    // something has to break out of the blocking
+            if (m_bIsFlushing || m_FilterState == State_Stopped)
+		return STREAM_DISCARDING;
+
+            if (bNoBufferTimes) {
+                //  Can't do anything until we get a time stamp
+                state = m_StreamState;
+                break;
+            } else {
+                state = CheckSampleTimes( &rtBufferStart, &rtBufferStop );
+                if (state == STREAM_FLOWING)
+		    break;
+
+		// we aren't supposed to send this, but we've been
+		// told to send one more than we were supposed to
+		// (and the stop isn't still pending and we're streaming)
+		if (m_bStopSendExtra && !m_bStopExtraSent &&
+					m_tStopTime == MAX_TIME &&
+					m_FilterState != State_Stopped) {
+		    m_bStopExtraSent = TRUE;
+		    DbgLog((LOG_TRACE,2,TEXT("%d sending an EXTRA frame"),
+							    m_dwStopCookie));
+		    state = STREAM_FLOWING;
+		    break;
+		}
+            }
+
+            // We're in discarding mode
+
+            // If we've no clock, discard as fast as we can
+            if (!m_pRefClock) {
+		break;
+
+	    // If we're paused, we can't discard in a timely manner because
+	    // there's no such thing as stream times.  We must block until
+	    // we run or stop, or we'll end up throwing the whole stream away
+	    // as quickly as possible
+	    } else if (m_FilterState == State_Paused) {
+		lWait = INFINITE;
+
+	    } else {
+	        // wait until it's time for the sample until we say "discard"
+	        // ("discard in a timely fashion")
+	        REFERENCE_TIME rtNow;
+                EXECUTE_ASSERT(SUCCEEDED(m_pRefClock->GetTime(&rtNow)));
+                rtNow -= m_tRunStart;   // Into relative ref-time
+                lWait = LONG((rtBufferStart - rtNow)/10000); // 100ns -> ms
+                if (lWait < 10) break; // Not worth waiting - discard early
+	    }
+
+    } while(WaitForSingleObject(GetStreamEventHandle(), lWait) != WAIT_TIMEOUT);
+
+    return state;
+}
+
+
+void CBaseStreamControl::NotifyFilterState( FILTER_STATE new_state, REFERENCE_TIME tStart )
+{
+    CAutoLock lck(&m_CritSec);
+
+    // or we will get confused
+    if (m_FilterState == new_state)
+	return;
+
+    switch (new_state)
+    {
+        case State_Stopped:
+
+            DbgLog((LOG_TRACE,2,TEXT("Filter is STOPPED")));
+
+	    // execute any pending starts and stops in the right order,
+	    // to make sure all notifications get sent, and we end up
+	    // in the right state to begin next time (??? why not?)
+
+	    if (m_tStartTime != MAX_TIME && m_tStopTime == MAX_TIME) {
+		ExecuteStart();
+	    } else if (m_tStopTime != MAX_TIME && m_tStartTime == MAX_TIME) {
+		ExecuteStop();
+	    } else if (m_tStopTime != MAX_TIME && m_tStartTime != MAX_TIME) {
+		if (m_tStartTime <= m_tStopTime) {
+		    ExecuteStart();
+		    ExecuteStop();
+		} else {
+		    ExecuteStop();
+		    ExecuteStart();
+		}
+	    }
+	    // always start off flowing when the graph starts streaming
+	    // unless told otherwise
+	    m_StreamState = STREAM_FLOWING;
+            m_FilterState = new_state;
+            break;
+
+        case State_Running:
+
+            DbgLog((LOG_TRACE,2,TEXT("Filter is RUNNING")));
+
+            m_tRunStart = tStart;
+            // fall-through
+
+        default: // case State_Paused:
+            m_FilterState = new_state;
+    }
+    // unblock!
+    m_StreamEvent.Set();
+}
+
+
+void CBaseStreamControl::Flushing(BOOL bInProgress)
+{
+    CAutoLock lck(&m_CritSec);
+    m_bIsFlushing = bInProgress;
+    m_StreamEvent.Set();
+}

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/strmctl.h

@@ -0,0 +1,157 @@
+//------------------------------------------------------------------------------
+// File: StrmCtl.h
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1996-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __strmctl_h__
+#define __strmctl_h__
+
+class CBaseStreamControl : public IAMStreamControl
+{
+public:
+    // Used by the implementation
+    enum StreamControlState
+    { STREAM_FLOWING = 0x1000,
+      STREAM_DISCARDING
+    };
+
+private:
+    enum StreamControlState	m_StreamState;		// Current stream state
+    enum StreamControlState	m_StreamStateOnStop;	// State after next stop
+						// (i.e.Blocking or Discarding)
+
+    REFERENCE_TIME	m_tStartTime;	    // MAX_TIME implies none
+    REFERENCE_TIME	m_tStopTime;	    // MAX_TIME implies none
+    DWORD		m_dwStartCookie;    // Cookie for notification to app
+    DWORD		m_dwStopCookie;	    // Cookie for notification to app
+    volatile BOOL       m_bIsFlushing;        // No optimization pls!
+    volatile BOOL	m_bStopSendExtra;   // bSendExtra was set
+    volatile BOOL	m_bStopExtraSent;   // the extra one was sent
+
+    CCritSec		m_CritSec;	    // CritSec to guard above attributes
+
+    // Event to fire when we can come
+    // out of blocking, or to come out of waiting
+    // to discard if we change our minds.
+    //
+    CAMEvent			m_StreamEvent;
+
+    // All of these methods execute immediately.  Helpers for others.
+    //
+    void ExecuteStop();
+    void ExecuteStart();
+    void CancelStop();
+    void CancelStart();
+
+    // Some things we need to be told by our owning filter
+    // Your pin must also expose IAMStreamControl when QI'd for it!
+    //
+    IReferenceClock *	m_pRefClock;	    // Need it to set advises
+					    // Filter must tell us via
+					    // SetSyncSource
+    IMediaEventSink *   m_pSink;            // Event sink
+					    // Filter must tell us after it
+					    // creates it in JoinFilterGraph()
+    FILTER_STATE	m_FilterState;	    // Just need it!
+					    // Filter must tell us via
+					    // NotifyFilterState
+    REFERENCE_TIME	m_tRunStart;	    // Per the Run call to the filter
+
+    // This guy will return one of the three StreamControlState's.  Here's what
+    // the caller should do for each one:
+    //
+    // STREAM_FLOWING:		Proceed as usual (render or pass the sample on)
+    // STREAM_DISCARDING:	Calculate the time 'til *pSampleStop and wait
+    //				that long for the event handle
+    //				(GetStreamEventHandle()).  If the wait
+    //				expires, throw the sample away.  If the event
+    //				fires, call me back - I've changed my mind.
+    //
+    enum StreamControlState CheckSampleTimes( __in const REFERENCE_TIME * pSampleStart,
+					      __in const REFERENCE_TIME * pSampleStop );
+
+public:
+    // You don't have to tell us much when we're created, but there are other
+    // obligations that must be met.  See SetSyncSource & NotifyFilterState
+    // below.
+    //
+    CBaseStreamControl(__inout_opt HRESULT *phr = NULL);
+    ~CBaseStreamControl();
+
+    // If you want this class to work properly, there are thing you need to
+    // (keep) telling it.  Filters with pins that use this class
+    // should ensure that they pass through to this method any calls they
+    // receive on their SetSyncSource.
+
+    // We need a clock to see what time it is.  This is for the
+    // "discard in a timely fashion" logic.  If we discard everything as
+    // quick as possible, a whole 60 minute file could get discarded in the
+    // first 10 seconds, and if somebody wants to turn streaming on at 30 
+    // minutes into the file, and they make the call more than a few seconds
+    // after the graph is run, it may be too late!
+    // So we hold every sample until it's time has gone, then we discard it.
+    // The filter should call this when it gets a SetSyncSource
+    //
+    void SetSyncSource( IReferenceClock * pRefClock )
+    {
+	CAutoLock lck(&m_CritSec);
+	if (m_pRefClock) m_pRefClock->Release();
+	m_pRefClock = pRefClock;
+	if (m_pRefClock) m_pRefClock->AddRef();
+    }
+
+    // Set event sink for notifications
+    // The filter should call this in its JoinFilterGraph after it creates the
+    // IMediaEventSink
+    //
+    void SetFilterGraph( IMediaEventSink *pSink ) {
+        m_pSink = pSink;
+    }
+
+    // Since we schedule in stream time, we need the tStart and must track the
+    // state of our owning filter.
+    // The app should call this ever state change
+    //
+    void NotifyFilterState( FILTER_STATE new_state, REFERENCE_TIME tStart = 0 );
+
+    // Filter should call Flushing(TRUE) in BeginFlush,
+    // and Flushing(FALSE) in EndFlush.
+    //
+    void Flushing( BOOL bInProgress );
+
+
+    // The two main methods of IAMStreamControl
+
+    // Class adds default values suitable for immediate
+    // muting and unmuting of the stream.
+
+    STDMETHODIMP StopAt( const REFERENCE_TIME * ptStop = NULL,
+			 BOOL bSendExtra = FALSE,
+			 DWORD dwCookie = 0 );
+    STDMETHODIMP StartAt( const REFERENCE_TIME * ptStart = NULL,
+		    	  DWORD dwCookie = 0 );
+    STDMETHODIMP GetInfo( __out AM_STREAM_INFO *pInfo);
+
+    // Helper function for pin's receive method.  Call this with
+    // the sample and we'll tell you what to do with it.  We'll do a
+    // WaitForSingleObject within this call if one is required.  This is
+    // a "What should I do with this sample?" kind of call. We'll tell the
+    // caller to either flow it or discard it.
+    // If pSample is NULL we evaluate based on the current state
+    // settings
+    enum StreamControlState CheckStreamState( IMediaSample * pSample );
+
+private:
+    // These don't require locking, but we are relying on the fact that
+    // m_StreamState can be retrieved with integrity, and is a snap shot that
+    // may have just been, or may be just about to be, changed.
+    HANDLE GetStreamEventHandle() const { return m_StreamEvent; }
+    enum StreamControlState GetStreamState() const { return m_StreamState; }
+    BOOL IsStreaming() const { return m_StreamState == STREAM_FLOWING; }
+};
+
+#endif

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/sysclock.cpp

@@ -0,0 +1,74 @@
+//------------------------------------------------------------------------------
+// File: SysClock.cpp
+//
+// Desc: DirectShow base classes - implements a system clock based on 
+//       IReferenceClock.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#include <limits.h>
+
+
+#ifdef FILTER_DLL
+
+/* List of class IDs and creator functions for the class factory. This
+   provides the link between the OLE entry point in the DLL and an object
+   being created. The class factory will call the static CreateInstance
+   function when it is asked to create a CLSID_SystemClock object */
+
+CFactoryTemplate g_Templates[1] = {
+    {&CLSID_SystemClock, CSystemClock::CreateInstance}
+};
+
+int g_cTemplates = sizeof(g_Templates) / sizeof(g_Templates[0]);
+#endif
+
+/* This goes in the factory template table to create new instances */
+CUnknown * WINAPI CSystemClock::CreateInstance(__inout_opt LPUNKNOWN pUnk, __inout HRESULT *phr)
+{
+    return new CSystemClock(NAME("System reference clock"),pUnk, phr);
+}
+
+
+CSystemClock::CSystemClock(__in_opt LPCTSTR pName, __inout_opt LPUNKNOWN pUnk, __inout HRESULT *phr) :
+    CBaseReferenceClock(pName, pUnk, phr)
+{
+}
+
+STDMETHODIMP CSystemClock::NonDelegatingQueryInterface(
+    REFIID riid,
+    __deref_out void ** ppv)
+{
+    if (riid == IID_IPersist)
+    {
+        return GetInterface(static_cast<IPersist *>(this), ppv);
+    }
+    else if (riid == IID_IAMClockAdjust)
+    {
+        return GetInterface(static_cast<IAMClockAdjust *>(this), ppv);
+    }
+    else
+    {
+        return CBaseReferenceClock::NonDelegatingQueryInterface(riid, ppv);
+    }
+}
+
+/* Return the clock's clsid */
+STDMETHODIMP
+CSystemClock::GetClassID(__out CLSID *pClsID)
+{
+    CheckPointer(pClsID,E_POINTER);
+    ValidateReadWritePtr(pClsID,sizeof(CLSID));
+    *pClsID = CLSID_SystemClock;
+    return NOERROR;
+}
+
+
+STDMETHODIMP 
+CSystemClock::SetClockDelta(REFERENCE_TIME rtDelta)
+{
+    return SetTimeDelta(rtDelta);
+}

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/sysclock.h

@@ -0,0 +1,39 @@
+//------------------------------------------------------------------------------
+// File: SysClock.h
+//
+// Desc: DirectShow base classes - defines a system clock implementation of
+//       IReferenceClock.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __SYSTEMCLOCK__
+#define __SYSTEMCLOCK__
+
+//
+// Base clock.  Uses timeGetTime ONLY
+// Uses most of the code in the base reference clock.
+// Provides GetTime
+//
+
+class CSystemClock : public CBaseReferenceClock, public IAMClockAdjust, public IPersist
+{
+public:
+    // We must be able to create an instance of ourselves
+    static CUnknown * WINAPI CreateInstance(__inout_opt LPUNKNOWN pUnk, __inout HRESULT *phr);
+    CSystemClock(__in_opt LPCTSTR pName, __inout_opt LPUNKNOWN pUnk, __inout HRESULT *phr);
+
+    DECLARE_IUNKNOWN
+
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __deref_out void ** ppv);
+
+    // Yield up our class id so that we can be persisted
+    // Implement required Ipersist method
+    STDMETHODIMP GetClassID(__out CLSID *pClsID);
+
+    //  IAMClockAdjust methods
+    STDMETHODIMP SetClockDelta(REFERENCE_TIME rtDelta);
+}; //CSystemClock
+
+#endif /* __SYSTEMCLOCK__ */

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/transfrm.h

@@ -0,0 +1,304 @@
+//------------------------------------------------------------------------------
+// File: Transfrm.h
+//
+// Desc: DirectShow base classes - defines classes from which simple 
+//       transform codecs may be derived.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+// It assumes the codec has one input and one output stream, and has no
+// interest in memory management, interface negotiation or anything else.
+//
+// derive your class from this, and supply Transform and the media type/format
+// negotiation functions. Implement that class, compile and link and
+// you're done.
+
+
+#ifndef __TRANSFRM__
+#define __TRANSFRM__
+
+// ======================================================================
+// This is the com object that represents a simple transform filter. It
+// supports IBaseFilter, IMediaFilter and two pins through nested interfaces
+// ======================================================================
+
+class CTransformFilter;
+
+// ==================================================
+// Implements the input pin
+// ==================================================
+
+class CTransformInputPin : public CBaseInputPin
+{
+    friend class CTransformFilter;
+
+protected:
+    CTransformFilter *m_pTransformFilter;
+
+
+public:
+
+    CTransformInputPin(
+        __in_opt LPCTSTR pObjectName,
+        __inout CTransformFilter *pTransformFilter,
+        __inout HRESULT * phr,
+        __in_opt LPCWSTR pName);
+#ifdef UNICODE
+    CTransformInputPin(
+        __in_opt LPCSTR pObjectName,
+        __inout CTransformFilter *pTransformFilter,
+        __inout HRESULT * phr,
+        __in_opt LPCWSTR pName);
+#endif
+
+    STDMETHODIMP QueryId(__deref_out LPWSTR * Id)
+    {
+        return AMGetWideString(L"In", Id);
+    }
+
+    // Grab and release extra interfaces if required
+
+    HRESULT CheckConnect(IPin *pPin);
+    HRESULT BreakConnect();
+    HRESULT CompleteConnect(IPin *pReceivePin);
+
+    // check that we can support this output type
+    HRESULT CheckMediaType(const CMediaType* mtIn);
+
+    // set the connection media type
+    HRESULT SetMediaType(const CMediaType* mt);
+
+    // --- IMemInputPin -----
+
+    // here's the next block of data from the stream.
+    // AddRef it yourself if you need to hold it beyond the end
+    // of this call.
+    STDMETHODIMP Receive(IMediaSample * pSample);
+
+    // provide EndOfStream that passes straight downstream
+    // (there is no queued data)
+    STDMETHODIMP EndOfStream(void);
+
+    // passes it to CTransformFilter::BeginFlush
+    STDMETHODIMP BeginFlush(void);
+
+    // passes it to CTransformFilter::EndFlush
+    STDMETHODIMP EndFlush(void);
+
+    STDMETHODIMP NewSegment(
+                        REFERENCE_TIME tStart,
+                        REFERENCE_TIME tStop,
+                        double dRate);
+
+    // Check if it's OK to process samples
+    virtual HRESULT CheckStreaming();
+
+    // Media type
+public:
+    CMediaType& CurrentMediaType() { return m_mt; };
+
+};
+
+// ==================================================
+// Implements the output pin
+// ==================================================
+
+class CTransformOutputPin : public CBaseOutputPin
+{
+    friend class CTransformFilter;
+
+protected:
+    CTransformFilter *m_pTransformFilter;
+
+public:
+
+    // implement IMediaPosition by passing upstream
+    IUnknown * m_pPosition;
+
+    CTransformOutputPin(
+        __in_opt LPCTSTR pObjectName,
+        __inout CTransformFilter *pTransformFilter,
+        __inout HRESULT * phr,
+        __in_opt LPCWSTR pName);
+#ifdef UNICODE
+    CTransformOutputPin(
+        __in_opt LPCSTR pObjectName,
+        __inout CTransformFilter *pTransformFilter,
+        __inout HRESULT * phr,
+        __in_opt LPCWSTR pName);
+#endif
+    ~CTransformOutputPin();
+
+    // override to expose IMediaPosition
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv);
+
+    // --- CBaseOutputPin ------------
+
+    STDMETHODIMP QueryId(__deref_out LPWSTR * Id)
+    {
+        return AMGetWideString(L"Out", Id);
+    }
+
+    // Grab and release extra interfaces if required
+
+    HRESULT CheckConnect(IPin *pPin);
+    HRESULT BreakConnect();
+    HRESULT CompleteConnect(IPin *pReceivePin);
+
+    // check that we can support this output type
+    HRESULT CheckMediaType(const CMediaType* mtOut);
+
+    // set the connection media type
+    HRESULT SetMediaType(const CMediaType *pmt);
+
+    // called from CBaseOutputPin during connection to ask for
+    // the count and size of buffers we need.
+    HRESULT DecideBufferSize(
+                IMemAllocator * pAlloc,
+                __inout ALLOCATOR_PROPERTIES *pProp);
+
+    // returns the preferred formats for a pin
+    HRESULT GetMediaType(int iPosition, __inout CMediaType *pMediaType);
+
+    // inherited from IQualityControl via CBasePin
+    STDMETHODIMP Notify(IBaseFilter * pSender, Quality q);
+
+    // Media type
+public:
+    CMediaType& CurrentMediaType() { return m_mt; };
+};
+
+
+class AM_NOVTABLE CTransformFilter : public CBaseFilter
+{
+
+public:
+
+    // map getpin/getpincount for base enum of pins to owner
+    // override this to return more specialised pin objects
+
+    virtual int GetPinCount();
+    virtual CBasePin * GetPin(int n);
+    STDMETHODIMP FindPin(LPCWSTR Id, __deref_out IPin **ppPin);
+
+    // override state changes to allow derived transform filter
+    // to control streaming start/stop
+    STDMETHODIMP Stop();
+    STDMETHODIMP Pause();
+
+public:
+
+    CTransformFilter(__in_opt LPCTSTR , __inout_opt LPUNKNOWN, REFCLSID clsid);
+#ifdef UNICODE
+    CTransformFilter(__in_opt LPCSTR , __inout_opt LPUNKNOWN, REFCLSID clsid);
+#endif
+    ~CTransformFilter();
+
+    // =================================================================
+    // ----- override these bits ---------------------------------------
+    // =================================================================
+
+    // These must be supplied in a derived class
+
+    virtual HRESULT Transform(IMediaSample * pIn, IMediaSample *pOut);
+
+    // check if you can support mtIn
+    virtual HRESULT CheckInputType(const CMediaType* mtIn) PURE;
+
+    // check if you can support the transform from this input to this output
+    virtual HRESULT CheckTransform(const CMediaType* mtIn, const CMediaType* mtOut) PURE;
+
+    // this goes in the factory template table to create new instances
+    // static CCOMObject * CreateInstance(__inout_opt LPUNKNOWN, HRESULT *);
+
+    // call the SetProperties function with appropriate arguments
+    virtual HRESULT DecideBufferSize(
+                        IMemAllocator * pAllocator,
+                        __inout ALLOCATOR_PROPERTIES *pprop) PURE;
+
+    // override to suggest OUTPUT pin media types
+    virtual HRESULT GetMediaType(int iPosition, __inout CMediaType *pMediaType) PURE;
+
+
+
+    // =================================================================
+    // ----- Optional Override Methods           -----------------------
+    // =================================================================
+
+    // you can also override these if you want to know about streaming
+    virtual HRESULT StartStreaming();
+    virtual HRESULT StopStreaming();
+
+    // override if you can do anything constructive with quality notifications
+    virtual HRESULT AlterQuality(Quality q);
+
+    // override this to know when the media type is actually set
+    virtual HRESULT SetMediaType(PIN_DIRECTION direction,const CMediaType *pmt);
+
+    // chance to grab extra interfaces on connection
+    virtual HRESULT CheckConnect(PIN_DIRECTION dir,IPin *pPin);
+    virtual HRESULT BreakConnect(PIN_DIRECTION dir);
+    virtual HRESULT CompleteConnect(PIN_DIRECTION direction,IPin *pReceivePin);
+
+    // chance to customize the transform process
+    virtual HRESULT Receive(IMediaSample *pSample);
+
+    // Standard setup for output sample
+    HRESULT InitializeOutputSample(IMediaSample *pSample, __deref_out IMediaSample **ppOutSample);
+
+    // if you override Receive, you may need to override these three too
+    virtual HRESULT EndOfStream(void);
+    virtual HRESULT BeginFlush(void);
+    virtual HRESULT EndFlush(void);
+    virtual HRESULT NewSegment(
+                        REFERENCE_TIME tStart,
+                        REFERENCE_TIME tStop,
+                        double dRate);
+
+#ifdef PERF
+    // Override to register performance measurement with a less generic string
+    // You should do this to avoid confusion with other filters
+    virtual void RegisterPerfId()
+         {m_idTransform = MSR_REGISTER(TEXT("Transform"));}
+#endif // PERF
+
+
+// implementation details
+
+protected:
+
+#ifdef PERF
+    int m_idTransform;                 // performance measuring id
+#endif
+    BOOL m_bEOSDelivered;              // have we sent EndOfStream
+    BOOL m_bSampleSkipped;             // Did we just skip a frame
+    BOOL m_bQualityChanged;            // Have we degraded?
+
+    // critical section protecting filter state.
+
+    CCritSec m_csFilter;
+
+    // critical section stopping state changes (ie Stop) while we're
+    // processing a sample.
+    //
+    // This critical section is held when processing
+    // events that occur on the receive thread - Receive() and EndOfStream().
+    //
+    // If you want to hold both m_csReceive and m_csFilter then grab
+    // m_csFilter FIRST - like CTransformFilter::Stop() does.
+
+    CCritSec m_csReceive;
+
+    // these hold our input and output pins
+
+    friend class CTransformInputPin;
+    friend class CTransformOutputPin;
+    CTransformInputPin *m_pInput;
+    CTransformOutputPin *m_pOutput;
+};
+
+#endif /* __TRANSFRM__ */
+
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/transip.cpp

@@ -0,0 +1,974 @@
+//------------------------------------------------------------------------------
+// File: TransIP.cpp
+//
+// Desc: DirectShow base classes - implements class for simple Transform-
+//       In-Place filters such as audio.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+// How allocators are decided.
+//
+// An in-place transform tries to do its work in someone else's buffers.
+// It tries to persuade the filters on either side to use the same allocator
+// (and for that matter the same media type).  In desperation, if the downstream
+// filter refuses to supply an allocator and the upstream filter offers only
+// a read-only one then it will provide an allocator.
+// if the upstream filter insists on a read-only allocator then the transform
+// filter will (reluctantly) copy the data before transforming it.
+//
+// In order to pass an allocator through it needs to remember the one it got
+// from the first connection to pass it on to the second one.
+//
+// It is good if we can avoid insisting on a particular order of connection
+// (There is a precedent for insisting on the input
+// being connected first.  Insisting on the output being connected first is
+// not allowed.  That would break RenderFile.)
+//
+// The base pin classes (CBaseOutputPin and CBaseInputPin) both have a
+// m_pAllocator member which is used in places like
+// CBaseOutputPin::GetDeliveryBuffer and CBaseInputPin::Inactive.
+// To avoid lots of extra overriding, we should keep these happy
+// by using these pointers.
+//
+// When each pin is connected, it will set the corresponding m_pAllocator
+// and will have a single ref-count on that allocator.
+//
+// Refcounts are acquired by GetAllocator calls which return AddReffed
+// allocators and are released in one of:
+//     CBaseInputPin::Disconnect
+//     CBaseOutputPin::BreakConect
+// In each case m_pAllocator is set to NULL after the release, so this
+// is the last chance to ever release it.  If there should ever be
+// multiple refcounts associated with the same pointer, this had better
+// be cleared up before that happens.  To avoid such problems, we'll
+// stick with one per pointer.
+
+
+
+// RECONNECTING and STATE CHANGES
+//
+// Each pin could be disconnected, connected with a read-only allocator,
+// connected with an upstream read/write allocator, connected with an
+// allocator from downstream or connected with its own allocator.
+// Five states for each pin gives a data space of 25 states.
+//
+// Notation:
+//
+// R/W == read/write
+// R-O == read-only
+//
+// <input pin state> <output pin state> <comments>
+//
+// 00 means an unconnected pin.
+// <- means using a R/W allocator from the upstream filter
+// <= means using a R-O allocator from an upstream filter
+// || means using our own (R/W) allocator.
+// -> means using a R/W allocator from a downstream filter
+//    (a R-O allocator from downstream is nonsense, it can't ever work).
+//
+//
+// That makes 25 possible states.  Some states are nonsense (two different
+// allocators from the same place).  These are just an artifact of the notation.
+//        <=  <-  Nonsense.
+//        <-  <=  Nonsense
+// Some states are illegal (the output pin never accepts a R-O allocator):
+//        00  <=  !! Error !!
+//        <=  <=  !! Error !!
+//        ||  <=  !! Error !!
+//        ->  <=  !! Error !!
+// Three states appears to be inaccessible:
+//        ->  ||  Inaccessible
+//        ||  ->  Inaccessible
+//        ||  <-  Inaccessible
+// Some states only ever occur as intermediates with a pending reconnect which
+// is guaranteed to finish in another state.
+//        ->  00  ?? unstable goes to || 00
+//        00  <-  ?? unstable goes to 00 ||
+//        ->  <-  ?? unstable goes to -> ->
+//        <-  ||  ?? unstable goes to <- <-
+//        <-  ->  ?? unstable goes to <- <-
+// And that leaves 11 possible resting states:
+// 1      00  00  Nothing connected.
+// 2      <-  00  Input pin connected.
+// 3      <=  00  Input pin connected using R-O allocator.
+// 4      ||  00  Needs several state changes to get here.
+// 5      00  ||  Output pin connected using our allocator
+// 6      00  ->  Downstream only connected
+// 7      ||  ||  Undesirable but can be forced upon us.
+// 8      <=  ||  Copy forced.  <=  -> is preferable
+// 9      <=  ->  OK - forced to copy.
+// 10     <-  <-  Transform in place (ideal)
+// 11     ->  ->  Transform in place (ideal)
+//
+// The object of the exercise is to ensure that we finish up in states
+// 10 or 11 whenever possible.  State 10 is only possible if the upstream
+// filter has a R/W allocator (the AVI splitter notoriously
+// doesn't) and state 11 is only possible if the downstream filter does
+// offer an allocator.
+//
+// The transition table (entries marked * go via a reconnect)
+//
+// There are 8 possible transitions:
+// A: Connect upstream to filter with R-O allocator that insists on using it.
+// B: Connect upstream to filter with R-O allocator but chooses not to use it.
+// C: Connect upstream to filter with R/W allocator and insists on using it.
+// D: Connect upstream to filter with R/W allocator but chooses not to use it.
+// E: Connect downstream to a filter that offers an allocator
+// F: Connect downstream to a filter that does not offer an allocator
+// G: disconnect upstream
+// H: Disconnect downstream
+//
+//            A      B      C      D      E      F      G      H
+//           ---------------------------------------------------------
+// 00  00 1 | 3      3      2      2      6      5      .      .      |1  00  00
+// <-  00 2 | .      .      .      .      *10/11 10     1      .      |2  <-  00
+// <=  00 3 | .      .      .      .      *9/11  *7/8   1      .      |3  <=  00
+// ||  00 4 | .      .      .      .      *8     *7     1      .      |4  ||  00
+// 00  || 5 | 8      7      *10    7      .      .      .      1      |5  00  ||
+// 00  -> 6 | 9      11     *10    11     .      .      .      1      |6  00  ->
+// ||  || 7 | .      .      .      .      .      .      5      4      |7  ||  ||
+// <=  || 8 | .      .      .      .      .      .      5      3      |8  <=  ||
+// <=  -> 9 | .      .      .      .      .      .      6      3      |9  <=  ->
+// <-  <- 10| .      .      .      .      .      .      *5/6   2      |10 <-  <-
+// ->  -> 11| .      .      .      .      .      .      6      *2/3   |11 ->  ->
+//           ---------------------------------------------------------
+//            A      B      C      D      E      F      G      H
+//
+// All these states are accessible without requiring any filter to
+// change its behaviour but not all transitions are accessible, for
+// instance a transition from state 4 to anywhere other than
+// state 8 requires that the upstream filter first offer a R-O allocator
+// and then changes its mind and offer R/W.  This is NOT allowable - it
+// leads to things like the output pin getting a R/W allocator from
+// upstream and then the input pin being told it can only have a R-O one.
+// Note that you CAN change (say) the upstream filter for a different one, but
+// only as a disconnect / connect, not as a Reconnect.  (Exercise for
+// the reader is to see how you get into state 4).
+//
+// The reconnection stuff goes as follows (some of the cases shown here as
+// "no reconnect" may get one to finalise media type - an old story).
+// If there is a reconnect where it says "no reconnect" here then the
+// reconnection must not change the allocator choice.
+//
+// state 2: <- 00 transition E <- <- case C <- <- (no change)
+//                                   case D -> <- and then to -> ->
+//
+// state 2: <- 00 transition F <- <- (no reconnect)
+//
+// state 3: <= 00 transition E <= -> case A <= -> (no change)
+//                                   case B -> ->
+//                transition F <= || case A <= || (no change)
+//                                   case B || ||
+//
+// state 4: || 00 transition E || || case B -> || and then all cases to -> ->
+//                           F || || case B || || (no change)
+//
+// state 5: 00 || transition A <= || (no reconnect)
+//                           B || || (no reconnect)
+//                           C <- || all cases     <- <-
+//                           D || || (unfortunate, but upstream's choice)
+//
+// state 6: 00 -> transition A <= -> (no reconnect)
+//                           B -> -> (no reconnect)
+//                           C <- -> all cases <- <-
+//                           D -> -> (no reconnect)
+//
+// state 10:<- <- transition G 00 <- case E 00 ->
+//                                   case F 00 ||
+//
+// state 11:-> -> transition H -> 00 case A <= 00 (schizo)
+//                                   case B <= 00
+//                                   case C <- 00 (schizo)
+//                                   case D <- 00
+//
+// The Rules:
+// To sort out media types:
+// The input is reconnected
+//    if the input pin is connected and the output pin connects
+// The output is reconnected
+//    If the output pin is connected
+//    and the input pin connects to a different media type
+//
+// To sort out allocators:
+// The input is reconnected
+//    if the output disconnects and the input was using a downstream allocator
+// The output pin calls SetAllocator to pass on a new allocator
+//    if the output is connected and
+//       if the input disconnects and the output was using an upstream allocator
+//       if the input acquires an allocator different from the output one
+//          and that new allocator is not R-O
+//
+// Data is copied (i.e. call getbuffer and copy the data before transforming it)
+//    if the two allocators are different.
+
+
+
+// CHAINS of filters:
+//
+// We sit between two filters (call them A and Z).  We should finish up
+// with the same allocator on both of our pins and that should be the
+// same one that A and Z would have agreed on if we hadn't been in the
+// way.  Furthermore, it should not matter how many in-place transforms
+// are in the way.  Let B, C, D... be in-place transforms ("us").
+// Here's how it goes:
+//
+// 1.
+// A connects to B.  They agree on A's allocator.
+//   A-a->B
+//
+// 2.
+// B connects to C.  Same story. There is no point in a reconnect, but
+// B will request an input reconnect anyway.
+//   A-a->B-a->C
+//
+// 3.
+// C connects to Z.
+// C insists on using A's allocator, but compromises by requesting a reconnect.
+// of C's input.
+//   A-a->B-?->C-a->Z
+//
+// We now have pending reconnects on both A--->B and B--->C
+//
+// 4.
+// The A--->B link is reconnected.
+// A asks B for an allocator.  B sees that it has a downstream connection so
+// asks its downstream input pin i.e. C's input pin for an allocator.  C sees
+// that it too has a downstream connection so asks Z for an allocator.
+//
+// Even though Z's input pin is connected, it is being asked for an allocator.
+// It could refuse, in which case the chain is done and will use A's allocator
+// Alternatively, Z may supply one.  A chooses either Z's or A's own one.
+// B's input pin gets NotifyAllocator called to tell it the decision and it
+// propagates this downstream by calling ReceiveAllocator on its output pin
+// which calls NotifyAllocator on the next input pin downstream etc.
+// If the choice is Z then it goes:
+//   A-z->B-a->C-a->Z
+//   A-z->B-z->C-a->Z
+//   A-z->B-z->C-z->Z
+//
+// And that's IT!!  Any further (essentially spurious) reconnects peter out
+// with no change in the chain.
+
+#include <streams.h>
+#include <measure.h>
+#include <transip.h>
+
+
+// =================================================================
+// Implements the CTransInPlaceFilter class
+// =================================================================
+
+CTransInPlaceFilter::CTransInPlaceFilter
+   ( __in_opt LPCTSTR    pName,
+     __inout_opt LPUNKNOWN  pUnk,
+     REFCLSID   clsid,
+     __inout HRESULT   *phr,
+     bool       bModifiesData
+   )
+   : CTransformFilter(pName, pUnk, clsid),
+     m_bModifiesData(bModifiesData)
+{
+#ifdef PERF
+    RegisterPerfId();
+#endif //  PERF
+
+} // constructor
+
+#ifdef UNICODE
+CTransInPlaceFilter::CTransInPlaceFilter
+   ( __in_opt LPCSTR  pName,
+     __inout_opt LPUNKNOWN  pUnk,
+     REFCLSID   clsid,
+     __inout HRESULT   *phr,
+     bool       bModifiesData
+   )
+   : CTransformFilter(pName, pUnk, clsid),
+     m_bModifiesData(bModifiesData)
+{
+#ifdef PERF
+    RegisterPerfId();
+#endif //  PERF
+
+} // constructor
+#endif
+
+// return a non-addrefed CBasePin * for the user to addref if he holds onto it
+// for longer than his pointer to us. We create the pins dynamically when they
+// are asked for rather than in the constructor. This is because we want to
+// give the derived class an oppportunity to return different pin objects
+
+// As soon as any pin is needed we create both (this is different from the
+// usual transform filter) because enumerators, allocators etc are passed
+// through from one pin to another and it becomes very painful if the other
+// pin isn't there.  If we fail to create either pin we ensure we fail both.
+
+CBasePin *
+CTransInPlaceFilter::GetPin(int n)
+{
+    HRESULT hr = S_OK;
+
+    // Create an input pin if not already done
+
+    if (m_pInput == NULL) {
+
+        m_pInput = new CTransInPlaceInputPin( NAME("TransInPlace input pin")
+                                            , this        // Owner filter
+                                            , &hr         // Result code
+                                            , L"Input"    // Pin name
+                                            );
+
+        // Constructor for CTransInPlaceInputPin can't fail
+        ASSERT(SUCCEEDED(hr));
+    }
+
+    // Create an output pin if not already done
+
+    if (m_pInput!=NULL && m_pOutput == NULL) {
+
+        m_pOutput = new CTransInPlaceOutputPin( NAME("TransInPlace output pin")
+                                              , this       // Owner filter
+                                              , &hr        // Result code
+                                              , L"Output"  // Pin name
+                                              );
+
+        // a failed return code should delete the object
+
+        ASSERT(SUCCEEDED(hr));
+        if (m_pOutput == NULL) {
+            delete m_pInput;
+            m_pInput = NULL;
+        }
+    }
+
+    // Return the appropriate pin
+
+    ASSERT (n>=0 && n<=1);
+    if (n == 0) {
+        return m_pInput;
+    } else if (n==1) {
+        return m_pOutput;
+    } else {
+        return NULL;
+    }
+
+} // GetPin
+
+
+
+// dir is the direction of our pin.
+// pReceivePin is the pin we are connecting to.
+HRESULT CTransInPlaceFilter::CompleteConnect(PIN_DIRECTION dir, IPin *pReceivePin)
+{
+    UNREFERENCED_PARAMETER(pReceivePin);
+    ASSERT(m_pInput);
+    ASSERT(m_pOutput);
+
+    // if we are not part of a graph, then don't indirect the pointer
+    // this probably prevents use of the filter without a filtergraph
+    if (!m_pGraph) {
+        return VFW_E_NOT_IN_GRAPH;
+    }
+
+    // Always reconnect the input to account for buffering changes
+    //
+    // Because we don't get to suggest a type on ReceiveConnection
+    // we need another way of making sure the right type gets used.
+    //
+    // One way would be to have our EnumMediaTypes return our output
+    // connection type first but more deterministic and simple is to
+    // call ReconnectEx passing the type we want to reconnect with
+    // via the base class ReconeectPin method.
+
+    if (dir == PINDIR_OUTPUT) {
+        if( m_pInput->IsConnected() ) {
+            return ReconnectPin( m_pInput, &m_pOutput->CurrentMediaType() );
+        }
+        return NOERROR;
+    }
+
+    ASSERT(dir == PINDIR_INPUT);
+
+    // Reconnect output if necessary
+
+    if( m_pOutput->IsConnected() ) {
+
+        if (  m_pInput->CurrentMediaType()
+           != m_pOutput->CurrentMediaType()
+           ) {
+            return ReconnectPin( m_pOutput, &m_pInput->CurrentMediaType() );
+        }
+    }
+    return NOERROR;
+
+} // ComnpleteConnect
+
+
+//
+// DecideBufferSize
+//
+// Tell the output pin's allocator what size buffers we require.
+// *pAlloc will be the allocator our output pin is using.
+//
+
+HRESULT CTransInPlaceFilter::DecideBufferSize
+            ( IMemAllocator *pAlloc
+            , __inout ALLOCATOR_PROPERTIES *pProperties
+            )
+{
+    ALLOCATOR_PROPERTIES Request, Actual;
+    HRESULT hr;
+
+    // If we are connected upstream, get his views
+    if (m_pInput->IsConnected()) {
+        // Get the input pin allocator, and get its size and count.
+        // we don't care about his alignment and prefix.
+
+        hr = InputPin()->PeekAllocator()->GetProperties(&Request);
+        if (FAILED(hr)) {
+            // Input connected but with a secretive allocator - enough!
+            return hr;
+        }
+    } else {
+        // Propose one byte
+        // If this isn't enough then when the other pin does get connected
+        // we can revise it.
+        ZeroMemory(&Request, sizeof(Request));
+        Request.cBuffers = 1;
+        Request.cbBuffer = 1;
+    }
+
+
+    DbgLog((LOG_MEMORY,1,TEXT("Setting Allocator Requirements")));
+    DbgLog((LOG_MEMORY,1,TEXT("Count %d, Size %d"),
+           Request.cBuffers, Request.cbBuffer));
+
+    // Pass the allocator requirements to our output side
+    // but do a little sanity checking first or we'll just hit
+    // asserts in the allocator.
+
+    pProperties->cBuffers = Request.cBuffers;
+    pProperties->cbBuffer = Request.cbBuffer;
+    pProperties->cbAlign = Request.cbAlign;
+    if (pProperties->cBuffers<=0) {pProperties->cBuffers = 1; }
+    if (pProperties->cbBuffer<=0) {pProperties->cbBuffer = 1; }
+    hr = pAlloc->SetProperties(pProperties, &Actual);
+
+    if (FAILED(hr)) {
+        return hr;
+    }
+
+    DbgLog((LOG_MEMORY,1,TEXT("Obtained Allocator Requirements")));
+    DbgLog((LOG_MEMORY,1,TEXT("Count %d, Size %d, Alignment %d"),
+           Actual.cBuffers, Actual.cbBuffer, Actual.cbAlign));
+
+    // Make sure we got the right alignment and at least the minimum required
+
+    if (  (Request.cBuffers > Actual.cBuffers)
+       || (Request.cbBuffer > Actual.cbBuffer)
+       || (Request.cbAlign  > Actual.cbAlign)
+       ) {
+        return E_FAIL;
+    }
+    return NOERROR;
+
+} // DecideBufferSize
+
+//
+// Copy
+//
+// return a pointer to an identical copy of pSample
+__out_opt IMediaSample * CTransInPlaceFilter::Copy(IMediaSample *pSource)
+{
+    IMediaSample * pDest;
+
+    HRESULT hr;
+    REFERENCE_TIME tStart, tStop;
+    const BOOL bTime = S_OK == pSource->GetTime( &tStart, &tStop);
+
+    // this may block for an indeterminate amount of time
+    hr = OutputPin()->PeekAllocator()->GetBuffer(
+              &pDest
+              , bTime ? &tStart : NULL
+              , bTime ? &tStop : NULL
+              , m_bSampleSkipped ? AM_GBF_PREVFRAMESKIPPED : 0
+              );
+
+    if (FAILED(hr)) {
+        return NULL;
+    }
+
+    ASSERT(pDest);
+    IMediaSample2 *pSample2;
+    if (SUCCEEDED(pDest->QueryInterface(IID_IMediaSample2, (void **)&pSample2))) {
+        HRESULT hrProps = pSample2->SetProperties(
+            FIELD_OFFSET(AM_SAMPLE2_PROPERTIES, pbBuffer),
+            (PBYTE)m_pInput->SampleProps());
+        pSample2->Release();
+        if (FAILED(hrProps)) {
+            pDest->Release();
+            return NULL;
+        }
+    } else {
+        if (bTime) {
+            pDest->SetTime(&tStart, &tStop);
+        }
+
+        if (S_OK == pSource->IsSyncPoint()) {
+            pDest->SetSyncPoint(TRUE);
+        }
+        if (S_OK == pSource->IsDiscontinuity() || m_bSampleSkipped) {
+            pDest->SetDiscontinuity(TRUE);
+        }
+        if (S_OK == pSource->IsPreroll()) {
+            pDest->SetPreroll(TRUE);
+        }
+
+        // Copy the media type
+        AM_MEDIA_TYPE *pMediaType;
+        if (S_OK == pSource->GetMediaType(&pMediaType)) {
+            pDest->SetMediaType(pMediaType);
+            DeleteMediaType( pMediaType );
+        }
+
+    }
+
+    m_bSampleSkipped = FALSE;
+
+    // Copy the sample media times
+    REFERENCE_TIME TimeStart, TimeEnd;
+    if (pSource->GetMediaTime(&TimeStart,&TimeEnd) == NOERROR) {
+        pDest->SetMediaTime(&TimeStart,&TimeEnd);
+    }
+
+    // Copy the actual data length and the actual data.
+    {
+        const long lDataLength = pSource->GetActualDataLength();
+        if (FAILED(pDest->SetActualDataLength(lDataLength))) {
+            pDest->Release();
+            return NULL;
+        }
+
+        // Copy the sample data
+        {
+            BYTE *pSourceBuffer, *pDestBuffer;
+            long lSourceSize  = pSource->GetSize();
+            long lDestSize = pDest->GetSize();
+
+            ASSERT(lDestSize >= lSourceSize && lDestSize >= lDataLength);
+
+            if (FAILED(pSource->GetPointer(&pSourceBuffer)) ||
+                FAILED(pDest->GetPointer(&pDestBuffer)) ||
+                lDestSize < lDataLength ||
+                lDataLength < 0) {
+                pDest->Release();
+                return NULL;
+            }
+            ASSERT(lDestSize == 0 || pSourceBuffer != NULL && pDestBuffer != NULL);
+
+            CopyMemory( (PVOID) pDestBuffer, (PVOID) pSourceBuffer, lDataLength );
+        }
+    }
+
+    return pDest;
+
+} // Copy
+
+
+// override this to customize the transform process
+
+HRESULT
+CTransInPlaceFilter::Receive(IMediaSample *pSample)
+{
+    /*  Check for other streams and pass them on */
+    AM_SAMPLE2_PROPERTIES * const pProps = m_pInput->SampleProps();
+    if (pProps->dwStreamId != AM_STREAM_MEDIA) {
+        return m_pOutput->Deliver(pSample);
+    }
+    HRESULT hr;
+
+    // Start timing the TransInPlace (if PERF is defined)
+    MSR_START(m_idTransInPlace);
+
+    if (UsingDifferentAllocators()) {
+
+        // We have to copy the data.
+
+        pSample = Copy(pSample);
+
+        if (pSample==NULL) {
+            MSR_STOP(m_idTransInPlace);
+            return E_UNEXPECTED;
+        }
+    }
+
+    // have the derived class transform the data
+    hr = Transform(pSample);
+
+    // Stop the clock and log it (if PERF is defined)
+    MSR_STOP(m_idTransInPlace);
+
+    if (FAILED(hr)) {
+        DbgLog((LOG_TRACE, 1, TEXT("Error from TransInPlace")));
+        if (UsingDifferentAllocators()) {
+            pSample->Release();
+        }
+        return hr;
+    }
+
+    // the Transform() function can return S_FALSE to indicate that the
+    // sample should not be delivered; we only deliver the sample if it's
+    // really S_OK (same as NOERROR, of course.)
+    if (hr == NOERROR) {
+        hr = m_pOutput->Deliver(pSample);
+    } else {
+        //  But it would be an error to return this private workaround
+        //  to the caller ...
+        if (S_FALSE == hr) {
+            // S_FALSE returned from Transform is a PRIVATE agreement
+            // We should return NOERROR from Receive() in this cause because
+            // returning S_FALSE from Receive() means that this is the end
+            // of the stream and no more data should be sent.
+            m_bSampleSkipped = TRUE;
+            if (!m_bQualityChanged) {
+                NotifyEvent(EC_QUALITY_CHANGE,0,0);
+                m_bQualityChanged = TRUE;
+            }
+            hr = NOERROR;
+        }
+    }
+
+    // release the output buffer. If the connected pin still needs it,
+    // it will have addrefed it itself.
+    if (UsingDifferentAllocators()) {
+        pSample->Release();
+    }
+
+    return hr;
+
+} // Receive
+
+
+
+// =================================================================
+// Implements the CTransInPlaceInputPin class
+// =================================================================
+
+
+// constructor
+
+CTransInPlaceInputPin::CTransInPlaceInputPin
+    ( __in_opt LPCTSTR             pObjectName
+    , __inout CTransInPlaceFilter *pFilter
+    , __inout HRESULT             *phr
+    , __in_opt LPCWSTR             pName
+    )
+    : CTransformInputPin(pObjectName,
+                         pFilter,
+                         phr,
+                         pName)
+    , m_bReadOnly(FALSE)
+    , m_pTIPFilter(pFilter)
+{
+    DbgLog((LOG_TRACE, 2
+           , TEXT("CTransInPlaceInputPin::CTransInPlaceInputPin")));
+
+} // constructor
+
+
+// =================================================================
+// Implements IMemInputPin interface
+// =================================================================
+
+
+// If the downstream filter has one then offer that (even if our own output
+// pin is not using it yet.  If the upstream filter chooses it then we will
+// tell our output pin to ReceiveAllocator).
+// Else if our output pin is using an allocator then offer that.
+//     ( This could mean offering the upstream filter his own allocator,
+//       it could mean offerring our own
+//     ) or it could mean offering the one from downstream
+// Else fail to offer any allocator at all.
+
+STDMETHODIMP CTransInPlaceInputPin::GetAllocator(__deref_out IMemAllocator ** ppAllocator)
+{
+    CheckPointer(ppAllocator,E_POINTER);
+    ValidateReadWritePtr(ppAllocator,sizeof(IMemAllocator *));
+    CAutoLock cObjectLock(m_pLock);
+
+    HRESULT hr;
+
+    if ( m_pTIPFilter->m_pOutput->IsConnected() ) {
+        //  Store the allocator we got
+        hr = m_pTIPFilter->OutputPin()->ConnectedIMemInputPin()
+                                        ->GetAllocator( ppAllocator );
+        if (SUCCEEDED(hr)) {
+            m_pTIPFilter->OutputPin()->SetAllocator( *ppAllocator );
+        }
+    }
+    else {
+        //  Help upstream filter (eg TIP filter which is having to do a copy)
+        //  by providing a temp allocator here - we'll never use
+        //  this allocator because when our output is connected we'll
+        //  reconnect this pin
+        hr = CTransformInputPin::GetAllocator( ppAllocator );
+    }
+    return hr;
+
+} // GetAllocator
+
+
+
+/* Get told which allocator the upstream output pin is actually going to use */
+
+
+STDMETHODIMP
+CTransInPlaceInputPin::NotifyAllocator(
+    IMemAllocator * pAllocator,
+    BOOL bReadOnly)
+{
+    HRESULT hr = S_OK;
+    CheckPointer(pAllocator,E_POINTER);
+    ValidateReadPtr(pAllocator,sizeof(IMemAllocator));
+
+    CAutoLock cObjectLock(m_pLock);
+
+    m_bReadOnly = bReadOnly;
+    //  If we modify data then don't accept the allocator if it's
+    //  the same as the output pin's allocator
+
+    //  If our output is not connected just accept the allocator
+    //  We're never going to use this allocator because when our
+    //  output pin is connected we'll reconnect this pin
+    if (!m_pTIPFilter->OutputPin()->IsConnected()) {
+        return CTransformInputPin::NotifyAllocator(pAllocator, bReadOnly);
+    }
+
+    //  If the allocator is read-only and we're modifying data
+    //  and the allocator is the same as the output pin's
+    //  then reject
+    if (bReadOnly && m_pTIPFilter->m_bModifiesData) {
+        IMemAllocator *pOutputAllocator =
+            m_pTIPFilter->OutputPin()->PeekAllocator();
+
+        //  Make sure we have an output allocator
+        if (pOutputAllocator == NULL) {
+            hr = m_pTIPFilter->OutputPin()->ConnectedIMemInputPin()->
+                                      GetAllocator(&pOutputAllocator);
+            if(FAILED(hr)) {
+                hr = CreateMemoryAllocator(&pOutputAllocator);
+            }
+            if (SUCCEEDED(hr)) {
+                m_pTIPFilter->OutputPin()->SetAllocator(pOutputAllocator);
+                pOutputAllocator->Release();
+            }
+        }
+        if (pAllocator == pOutputAllocator) {
+            hr = E_FAIL;
+        } else if(SUCCEEDED(hr)) {
+            //  Must copy so set the allocator properties on the output
+            ALLOCATOR_PROPERTIES Props, Actual;
+            hr = pAllocator->GetProperties(&Props);
+            if (SUCCEEDED(hr)) {
+                hr = pOutputAllocator->SetProperties(&Props, &Actual);
+            }
+            if (SUCCEEDED(hr)) {
+                if (  (Props.cBuffers > Actual.cBuffers)
+                   || (Props.cbBuffer > Actual.cbBuffer)
+                   || (Props.cbAlign  > Actual.cbAlign)
+                   ) {
+                    hr =  E_FAIL;
+                }
+            }
+
+            //  Set the allocator on the output pin
+            if (SUCCEEDED(hr)) {
+                hr = m_pTIPFilter->OutputPin()->ConnectedIMemInputPin()
+                                       ->NotifyAllocator( pOutputAllocator, FALSE );
+            }
+        }
+    } else {
+        hr = m_pTIPFilter->OutputPin()->ConnectedIMemInputPin()
+                                   ->NotifyAllocator( pAllocator, bReadOnly );
+        if (SUCCEEDED(hr)) {
+            m_pTIPFilter->OutputPin()->SetAllocator( pAllocator );
+        }
+    }
+
+    if (SUCCEEDED(hr)) {
+
+        // It's possible that the old and the new are the same thing.
+        // AddRef before release ensures that we don't unload it.
+        pAllocator->AddRef();
+
+        if( m_pAllocator != NULL )
+            m_pAllocator->Release();
+
+        m_pAllocator = pAllocator;    // We have an allocator for the input pin
+    }
+
+    return hr;
+
+} // NotifyAllocator
+
+
+// EnumMediaTypes
+// - pass through to our downstream filter
+STDMETHODIMP CTransInPlaceInputPin::EnumMediaTypes( __deref_out IEnumMediaTypes **ppEnum )
+{
+    // Can only pass through if connected
+    if( !m_pTIPFilter->m_pOutput->IsConnected() )
+        return VFW_E_NOT_CONNECTED;
+
+    return m_pTIPFilter->m_pOutput->GetConnected()->EnumMediaTypes( ppEnum );
+
+} // EnumMediaTypes
+
+
+// CheckMediaType
+// - agree to anything if not connected,
+// otherwise pass through to the downstream filter.
+// This assumes that the filter does not change the media type.
+
+HRESULT CTransInPlaceInputPin::CheckMediaType(const CMediaType *pmt )
+{
+    HRESULT hr = m_pTIPFilter->CheckInputType(pmt);
+    if (hr!=S_OK) return hr;
+
+    if( m_pTIPFilter->m_pOutput->IsConnected() )
+        return m_pTIPFilter->m_pOutput->GetConnected()->QueryAccept( pmt );
+    else
+        return S_OK;
+
+} // CheckMediaType
+
+
+// If upstream asks us what our requirements are, we will try to ask downstream
+// if that doesn't work, we'll just take the defaults.
+STDMETHODIMP
+CTransInPlaceInputPin::GetAllocatorRequirements(__out ALLOCATOR_PROPERTIES *pProps)
+{
+
+    if( m_pTIPFilter->m_pOutput->IsConnected() )
+        return m_pTIPFilter->OutputPin()
+               ->ConnectedIMemInputPin()->GetAllocatorRequirements( pProps );
+    else
+        return E_NOTIMPL;
+
+} // GetAllocatorRequirements
+
+
+// CTransInPlaceInputPin::CompleteConnect() calls CBaseInputPin::CompleteConnect()
+// and then calls CTransInPlaceFilter::CompleteConnect().  It does this because 
+// CTransInPlaceFilter::CompleteConnect() can reconnect a pin and we do not
+// want to reconnect a pin if CBaseInputPin::CompleteConnect() fails.
+HRESULT
+CTransInPlaceInputPin::CompleteConnect(IPin *pReceivePin)
+{
+    HRESULT hr = CBaseInputPin::CompleteConnect(pReceivePin);
+    if (FAILED(hr)) {
+        return hr;
+    }
+
+    return m_pTransformFilter->CompleteConnect(PINDIR_INPUT,pReceivePin);
+} // CompleteConnect
+
+
+// =================================================================
+// Implements the CTransInPlaceOutputPin class
+// =================================================================
+
+
+// constructor
+
+CTransInPlaceOutputPin::CTransInPlaceOutputPin(
+    __in_opt LPCTSTR pObjectName,
+    __inout CTransInPlaceFilter *pFilter,
+    __inout HRESULT * phr,
+    __in_opt LPCWSTR pPinName)
+    : CTransformOutputPin( pObjectName
+                         , pFilter
+                         , phr
+                         , pPinName),
+      m_pTIPFilter(pFilter)
+{
+    DbgLog(( LOG_TRACE, 2
+           , TEXT("CTransInPlaceOutputPin::CTransInPlaceOutputPin")));
+
+} // constructor
+
+
+// EnumMediaTypes
+// - pass through to our upstream filter
+STDMETHODIMP CTransInPlaceOutputPin::EnumMediaTypes( __deref_out IEnumMediaTypes **ppEnum )
+{
+    // Can only pass through if connected.
+    if( ! m_pTIPFilter->m_pInput->IsConnected() )
+        return VFW_E_NOT_CONNECTED;
+
+    return m_pTIPFilter->m_pInput->GetConnected()->EnumMediaTypes( ppEnum );
+
+} // EnumMediaTypes
+
+
+
+// CheckMediaType
+// - agree to anything if not connected,
+// otherwise pass through to the upstream filter.
+
+HRESULT CTransInPlaceOutputPin::CheckMediaType(const CMediaType *pmt )
+{
+    // Don't accept any output pin type changes if we're copying
+    // between allocators - it's too late to change the input
+    // allocator size.
+    if (m_pTIPFilter->UsingDifferentAllocators() && !m_pFilter->IsStopped()) {
+        if (*pmt == m_mt) {
+            return S_OK;
+        } else {
+            return VFW_E_TYPE_NOT_ACCEPTED;
+        }
+    }
+
+    // Assumes the type does not change.  That's why we're calling
+    // CheckINPUTType here on the OUTPUT pin.
+    HRESULT hr = m_pTIPFilter->CheckInputType(pmt);
+    if (hr!=S_OK) return hr;
+
+    if( m_pTIPFilter->m_pInput->IsConnected() )
+        return m_pTIPFilter->m_pInput->GetConnected()->QueryAccept( pmt );
+    else
+        return S_OK;
+
+} // CheckMediaType
+
+
+/* Save the allocator pointer in the output pin
+*/
+void
+CTransInPlaceOutputPin::SetAllocator(IMemAllocator * pAllocator)
+{
+    pAllocator->AddRef();
+    if (m_pAllocator) {
+        m_pAllocator->Release();
+    }
+    m_pAllocator = pAllocator;
+} // SetAllocator
+
+
+// CTransInPlaceOutputPin::CompleteConnect() calls CBaseOutputPin::CompleteConnect()
+// and then calls CTransInPlaceFilter::CompleteConnect().  It does this because 
+// CTransInPlaceFilter::CompleteConnect() can reconnect a pin and we do not want to 
+// reconnect a pin if CBaseOutputPin::CompleteConnect() fails.  
+// CBaseOutputPin::CompleteConnect() often fails when our output pin is being connected 
+// to the Video Mixing Renderer.
+HRESULT
+CTransInPlaceOutputPin::CompleteConnect(IPin *pReceivePin)
+{
+    HRESULT hr = CBaseOutputPin::CompleteConnect(pReceivePin);
+    if (FAILED(hr)) {
+        return hr;
+    }
+
+    return m_pTransformFilter->CompleteConnect(PINDIR_OUTPUT,pReceivePin);
+} // CompleteConnect

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/transip.h

@@ -0,0 +1,250 @@
+//------------------------------------------------------------------------------
+// File: TransIP.h
+//
+// Desc: DirectShow base classes - defines classes from which simple
+//       Transform-In-Place filters may be derived.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+//
+// The difference between this and Transfrm.h is that Transfrm copies the data.
+//
+// It assumes the filter has one input and one output stream, and has no
+// interest in memory management, interface negotiation or anything else.
+//
+// Derive your class from this, and supply Transform and the media type/format
+// negotiation functions. Implement that class, compile and link and
+// you're done.
+
+
+#ifndef __TRANSIP__
+#define __TRANSIP__
+
+// ======================================================================
+// This is the com object that represents a simple transform filter. It
+// supports IBaseFilter, IMediaFilter and two pins through nested interfaces
+// ======================================================================
+
+class CTransInPlaceFilter;
+
+// Several of the pin functions call filter functions to do the work,
+// so you can often use the pin classes unaltered, just overriding the
+// functions in CTransInPlaceFilter.  If that's not enough and you want
+// to derive your own pin class, override GetPin in the filter to supply
+// your own pin classes to the filter.
+
+// ==================================================
+// Implements the input pin
+// ==================================================
+
+class CTransInPlaceInputPin : public CTransformInputPin
+{
+
+protected:
+    CTransInPlaceFilter * const m_pTIPFilter;    // our filter
+    BOOL                 m_bReadOnly;    // incoming stream is read only
+
+public:
+
+    CTransInPlaceInputPin(
+        __in_opt LPCTSTR     pObjectName,
+        __inout CTransInPlaceFilter *pFilter,
+        __inout HRESULT             *phr,
+        __in_opt LPCWSTR              pName);
+
+    // --- IMemInputPin -----
+
+    // Provide an enumerator for media types by getting one from downstream
+    STDMETHODIMP EnumMediaTypes( __deref_out IEnumMediaTypes **ppEnum );
+
+    // Say whether media type is acceptable.
+    HRESULT CheckMediaType(const CMediaType* pmt);
+
+    // Return our upstream allocator
+    STDMETHODIMP GetAllocator(__deref_out IMemAllocator ** ppAllocator);
+
+    // get told which allocator the upstream output pin is actually
+    // going to use.
+    STDMETHODIMP NotifyAllocator(IMemAllocator * pAllocator,
+                                 BOOL bReadOnly);
+
+    // Allow the filter to see what allocator we have
+    // N.B. This does NOT AddRef
+    __out IMemAllocator * PeekAllocator() const
+        {  return m_pAllocator; }
+
+    // Pass this on downstream if it ever gets called.
+    STDMETHODIMP GetAllocatorRequirements(__out ALLOCATOR_PROPERTIES *pProps);
+
+    HRESULT CompleteConnect(IPin *pReceivePin);
+
+    inline const BOOL ReadOnly() { return m_bReadOnly ; }
+
+};  // CTransInPlaceInputPin
+
+// ==================================================
+// Implements the output pin
+// ==================================================
+
+class CTransInPlaceOutputPin : public CTransformOutputPin
+{
+
+protected:
+    // m_pFilter points to our CBaseFilter
+    CTransInPlaceFilter * const m_pTIPFilter;
+
+public:
+
+    CTransInPlaceOutputPin(
+        __in_opt LPCTSTR     pObjectName,
+        __inout CTransInPlaceFilter *pFilter,
+        __inout HRESULT             *phr,
+        __in_opt LPCWSTR              pName);
+
+
+    // --- CBaseOutputPin ------------
+
+    // negotiate the allocator and its buffer size/count
+    // Insists on using our own allocator.  (Actually the one upstream of us).
+    // We don't override this - instead we just agree the default
+    // then let the upstream filter decide for itself on reconnect
+    // virtual HRESULT DecideAllocator(IMemInputPin * pPin, IMemAllocator ** pAlloc);
+
+    // Provide a media type enumerator.  Get it from upstream.
+    STDMETHODIMP EnumMediaTypes( __deref_out IEnumMediaTypes **ppEnum );
+
+    // Say whether media type is acceptable.
+    HRESULT CheckMediaType(const CMediaType* pmt);
+
+    //  This just saves the allocator being used on the output pin
+    //  Also called by input pin's GetAllocator()
+    void SetAllocator(IMemAllocator * pAllocator);
+
+    __out_opt IMemInputPin * ConnectedIMemInputPin()
+        { return m_pInputPin; }
+
+    // Allow the filter to see what allocator we have
+    // N.B. This does NOT AddRef
+    __out IMemAllocator * PeekAllocator() const
+        {  return m_pAllocator; }
+
+    HRESULT CompleteConnect(IPin *pReceivePin);
+
+};  // CTransInPlaceOutputPin
+
+
+class AM_NOVTABLE CTransInPlaceFilter : public CTransformFilter
+{
+
+public:
+
+    // map getpin/getpincount for base enum of pins to owner
+    // override this to return more specialised pin objects
+
+    virtual CBasePin *GetPin(int n);
+
+public:
+
+    //  Set bModifiesData == false if your derived filter does
+    //  not modify the data samples (for instance it's just copying
+    //  them somewhere else or looking at the timestamps).
+
+    CTransInPlaceFilter(__in_opt LPCTSTR, __inout_opt LPUNKNOWN, REFCLSID clsid, __inout HRESULT *,
+                        bool bModifiesData = true);
+#ifdef UNICODE
+    CTransInPlaceFilter(__in_opt LPCSTR, __inout_opt LPUNKNOWN, REFCLSID clsid, __inout HRESULT *,
+                        bool bModifiesData = true);
+#endif
+    // The following are defined to avoid undefined pure virtuals.
+    // Even if they are never called, they will give linkage warnings/errors
+
+    // We override EnumMediaTypes to bypass the transform class enumerator
+    // which would otherwise call this.
+    HRESULT GetMediaType(int iPosition, __inout CMediaType *pMediaType)
+        {   DbgBreak("CTransInPlaceFilter::GetMediaType should never be called");
+            return E_UNEXPECTED;
+        }
+
+    // This is called when we actually have to provide our own allocator.
+    HRESULT DecideBufferSize(IMemAllocator*, __inout ALLOCATOR_PROPERTIES *);
+
+    // The functions which call this in CTransform are overridden in this
+    // class to call CheckInputType with the assumption that the type
+    // does not change.  In Debug builds some calls will be made and
+    // we just ensure that they do not assert.
+    HRESULT CheckTransform(const CMediaType *mtIn, const CMediaType *mtOut)
+    {
+        return S_OK;
+    };
+
+
+    // =================================================================
+    // ----- You may want to override this -----------------------------
+    // =================================================================
+
+    HRESULT CompleteConnect(PIN_DIRECTION dir,IPin *pReceivePin);
+
+    // chance to customize the transform process
+    virtual HRESULT Receive(IMediaSample *pSample);
+
+    // =================================================================
+    // ----- You MUST override these -----------------------------------
+    // =================================================================
+
+    virtual HRESULT Transform(IMediaSample *pSample) PURE;
+
+    // this goes in the factory template table to create new instances
+    // static CCOMObject * CreateInstance(LPUNKNOWN, HRESULT *);
+
+
+#ifdef PERF
+    // Override to register performance measurement with a less generic string
+    // You should do this to avoid confusion with other filters
+    virtual void RegisterPerfId()
+         {m_idTransInPlace = MSR_REGISTER(TEXT("TransInPlace"));}
+#endif // PERF
+
+
+// implementation details
+
+protected:
+
+    __out_opt IMediaSample * CTransInPlaceFilter::Copy(IMediaSample *pSource);
+
+#ifdef PERF
+    int m_idTransInPlace;                 // performance measuring id
+#endif // PERF
+    bool  m_bModifiesData;                // Does this filter change the data?
+
+    // these hold our input and output pins
+
+    friend class CTransInPlaceInputPin;
+    friend class CTransInPlaceOutputPin;
+
+    __out CTransInPlaceInputPin  *InputPin() const
+    {
+        return (CTransInPlaceInputPin *)m_pInput;
+    };
+    __out CTransInPlaceOutputPin *OutputPin() const
+    {
+        return (CTransInPlaceOutputPin *)m_pOutput;
+    };
+
+    //  Helper to see if the input and output types match
+    BOOL TypesMatch()
+    {
+        return InputPin()->CurrentMediaType() ==
+               OutputPin()->CurrentMediaType();
+    }
+
+    //  Are the input and output allocators different?
+    BOOL UsingDifferentAllocators() const
+    {
+        return InputPin()->PeekAllocator() != OutputPin()->PeekAllocator();
+    }
+}; // CTransInPlaceFilter
+
+#endif /* __TRANSIP__ */
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/videoctl.cpp

@@ -0,0 +1,746 @@
+//------------------------------------------------------------------------------
+// File: VideoCtl.cpp
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#include "ddmm.h"
+
+// Load a string from the resource file string table. The buffer must be at
+// least STR_MAX_LENGTH bytes. The easiest way to use this is to declare a
+// buffer in the property page class and use it for all string loading. It
+// cannot be static as multiple property pages may be active simultaneously
+
+LPTSTR WINAPI StringFromResource(__out_ecount(STR_MAX_LENGTH) LPTSTR pBuffer, int iResourceID)
+{
+    if (LoadString(g_hInst,iResourceID,pBuffer,STR_MAX_LENGTH) == 0) {
+        return TEXT("");
+    }
+    return pBuffer;
+}
+
+#ifdef UNICODE
+LPSTR WINAPI StringFromResource(__out_ecount(STR_MAX_LENGTH) LPSTR pBuffer, int iResourceID)
+{
+    if (LoadStringA(g_hInst,iResourceID,pBuffer,STR_MAX_LENGTH) == 0) {
+        return "";
+    }
+    return pBuffer;
+}
+#endif
+
+
+
+// Property pages typically are called through their OLE interfaces. These
+// use UNICODE strings regardless of how the binary is built. So when we
+// load strings from the resource file we sometimes want to convert them
+// to UNICODE. This method is passed the target UNICODE buffer and does a
+// convert after loading the string (if built UNICODE this is not needed)
+// On WinNT we can explicitly call LoadStringW which saves two conversions
+
+#ifndef UNICODE
+
+LPWSTR WINAPI WideStringFromResource(__out_ecount(STR_MAX_LENGTH) LPWSTR pBuffer, int iResourceID)
+{
+    *pBuffer = 0;
+
+    if (g_amPlatform == VER_PLATFORM_WIN32_NT) {
+	LoadStringW(g_hInst,iResourceID,pBuffer,STR_MAX_LENGTH);
+    } else {
+
+	CHAR szBuffer[STR_MAX_LENGTH];
+	DWORD dwStringLength = LoadString(g_hInst,iResourceID,szBuffer,STR_MAX_LENGTH);
+	// if we loaded a string convert it to wide characters, ensuring
+	// that we also null terminate the result.
+	if (dwStringLength++) {
+	    MultiByteToWideChar(CP_ACP,0,szBuffer,dwStringLength,pBuffer,STR_MAX_LENGTH);
+	}
+    }
+    return pBuffer;
+}
+
+#endif
+
+
+// Helper function to calculate the size of the dialog
+
+BOOL WINAPI GetDialogSize(int iResourceID,
+                          DLGPROC pDlgProc,
+                          LPARAM lParam,
+                          __out SIZE *pResult)
+{
+    RECT rc;
+    HWND hwnd;
+
+    // Create a temporary property page
+
+    hwnd = CreateDialogParam(g_hInst,
+                             MAKEINTRESOURCE(iResourceID),
+                             GetDesktopWindow(),
+                             pDlgProc,
+                             lParam);
+    if (hwnd == NULL) {
+        return FALSE;
+    }
+
+    GetWindowRect(hwnd, &rc);
+    pResult->cx = rc.right - rc.left;
+    pResult->cy = rc.bottom - rc.top;
+
+    DestroyWindow(hwnd);
+    return TRUE;
+}
+
+
+// Class that aggregates on the IDirectDraw interface. Although DirectDraw
+// has the ability in its interfaces to be aggregated they're not currently
+// implemented. This makes it difficult for various parts of Quartz that want
+// to aggregate these interfaces. In particular the video renderer passes out
+// media samples that expose IDirectDraw and IDirectDrawSurface. The filter
+// graph manager also exposes IDirectDraw as a plug in distributor. For these
+// objects we provide these aggregation classes that republish the interfaces
+
+STDMETHODIMP CAggDirectDraw::NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv)
+{
+    ASSERT(m_pDirectDraw);
+
+    // Do we have this interface
+
+    if (riid == IID_IDirectDraw) {
+        return GetInterface((IDirectDraw *)this,ppv);
+    } else {
+        return CUnknown::NonDelegatingQueryInterface(riid,ppv);
+    }
+}
+
+
+STDMETHODIMP CAggDirectDraw::Compact()
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->Compact();
+}
+
+
+STDMETHODIMP CAggDirectDraw::CreateClipper(DWORD dwFlags, __deref_out LPDIRECTDRAWCLIPPER *lplpDDClipper, __inout_opt IUnknown *pUnkOuter)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->CreateClipper(dwFlags,lplpDDClipper,pUnkOuter);
+}
+
+
+STDMETHODIMP CAggDirectDraw::CreatePalette(DWORD dwFlags,
+                                           __in LPPALETTEENTRY lpColorTable,
+                                           __deref_out LPDIRECTDRAWPALETTE *lplpDDPalette,
+                                           __inout_opt IUnknown *pUnkOuter)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->CreatePalette(dwFlags,lpColorTable,lplpDDPalette,pUnkOuter);
+}
+
+
+STDMETHODIMP CAggDirectDraw::CreateSurface(__in LPDDSURFACEDESC lpDDSurfaceDesc,
+                                           __deref_out LPDIRECTDRAWSURFACE *lplpDDSurface,
+                                           __inout_opt IUnknown *pUnkOuter)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->CreateSurface(lpDDSurfaceDesc,lplpDDSurface,pUnkOuter);
+}
+
+
+STDMETHODIMP CAggDirectDraw::DuplicateSurface(__in LPDIRECTDRAWSURFACE lpDDSurface,
+                                              __deref_out LPDIRECTDRAWSURFACE *lplpDupDDSurface)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->DuplicateSurface(lpDDSurface,lplpDupDDSurface);
+}
+
+
+STDMETHODIMP CAggDirectDraw::EnumDisplayModes(DWORD dwSurfaceDescCount,
+                                              __in LPDDSURFACEDESC lplpDDSurfaceDescList,
+                                              __in LPVOID lpContext,
+                                              __in LPDDENUMMODESCALLBACK lpEnumCallback)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->EnumDisplayModes(dwSurfaceDescCount,lplpDDSurfaceDescList,lpContext,lpEnumCallback);
+}
+
+
+STDMETHODIMP CAggDirectDraw::EnumSurfaces(DWORD dwFlags,
+                                          __in LPDDSURFACEDESC lpDDSD,
+                                          __in LPVOID lpContext,
+                                          __in LPDDENUMSURFACESCALLBACK lpEnumCallback)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->EnumSurfaces(dwFlags,lpDDSD,lpContext,lpEnumCallback);
+}
+
+
+STDMETHODIMP CAggDirectDraw::FlipToGDISurface()
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->FlipToGDISurface();
+}
+
+
+STDMETHODIMP CAggDirectDraw::GetCaps(__out LPDDCAPS lpDDDriverCaps,__out LPDDCAPS lpDDHELCaps)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->GetCaps(lpDDDriverCaps,lpDDHELCaps);
+}
+
+
+STDMETHODIMP CAggDirectDraw::GetDisplayMode(__out LPDDSURFACEDESC lpDDSurfaceDesc)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->GetDisplayMode(lpDDSurfaceDesc);
+}
+
+
+STDMETHODIMP CAggDirectDraw::GetFourCCCodes(__inout LPDWORD lpNumCodes,__out_ecount(*lpNumCodes) LPDWORD lpCodes)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->GetFourCCCodes(lpNumCodes,lpCodes);
+}
+
+
+STDMETHODIMP CAggDirectDraw::GetGDISurface(__deref_out LPDIRECTDRAWSURFACE *lplpGDIDDSurface)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->GetGDISurface(lplpGDIDDSurface);
+}
+
+
+STDMETHODIMP CAggDirectDraw::GetMonitorFrequency(__out LPDWORD lpdwFrequency)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->GetMonitorFrequency(lpdwFrequency);
+}
+
+
+STDMETHODIMP CAggDirectDraw::GetScanLine(__out LPDWORD lpdwScanLine)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->GetScanLine(lpdwScanLine);
+}
+
+
+STDMETHODIMP CAggDirectDraw::GetVerticalBlankStatus(__out LPBOOL lpblsInVB)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->GetVerticalBlankStatus(lpblsInVB);
+}
+
+
+STDMETHODIMP CAggDirectDraw::Initialize(__in GUID *lpGUID)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->Initialize(lpGUID);
+}
+
+
+STDMETHODIMP CAggDirectDraw::RestoreDisplayMode()
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->RestoreDisplayMode();
+}
+
+
+STDMETHODIMP CAggDirectDraw::SetCooperativeLevel(HWND hWnd,DWORD dwFlags)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->SetCooperativeLevel(hWnd,dwFlags);
+}
+
+
+STDMETHODIMP CAggDirectDraw::SetDisplayMode(DWORD dwWidth,DWORD dwHeight,DWORD dwBpp)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->SetDisplayMode(dwWidth,dwHeight,dwBpp);
+}
+
+
+STDMETHODIMP CAggDirectDraw::WaitForVerticalBlank(DWORD dwFlags,HANDLE hEvent)
+{
+    ASSERT(m_pDirectDraw);
+    return m_pDirectDraw->WaitForVerticalBlank(dwFlags,hEvent);
+}
+
+
+// Class that aggregates an IDirectDrawSurface interface. Although DirectDraw
+// has the ability in its interfaces to be aggregated they're not currently
+// implemented. This makes it difficult for various parts of Quartz that want
+// to aggregate these interfaces. In particular the video renderer passes out
+// media samples that expose IDirectDraw and IDirectDrawSurface. The filter
+// graph manager also exposes IDirectDraw as a plug in distributor. For these
+// objects we provide these aggregation classes that republish the interfaces
+
+STDMETHODIMP CAggDrawSurface::NonDelegatingQueryInterface(REFIID riid, __deref_out void **ppv)
+{
+    ASSERT(m_pDirectDrawSurface);
+
+    // Do we have this interface
+
+    if (riid == IID_IDirectDrawSurface) {
+        return GetInterface((IDirectDrawSurface *)this,ppv);
+    } else {
+        return CUnknown::NonDelegatingQueryInterface(riid,ppv);
+    }
+}
+
+
+STDMETHODIMP CAggDrawSurface::AddAttachedSurface(__in LPDIRECTDRAWSURFACE lpDDSAttachedSurface)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->AddAttachedSurface(lpDDSAttachedSurface);
+}
+
+
+STDMETHODIMP CAggDrawSurface::AddOverlayDirtyRect(__in LPRECT lpRect)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->AddOverlayDirtyRect(lpRect);
+}
+
+
+STDMETHODIMP CAggDrawSurface::Blt(__in LPRECT lpDestRect,
+                                  __in LPDIRECTDRAWSURFACE lpDDSrcSurface,
+                                  __in LPRECT lpSrcRect,
+                                  DWORD dwFlags,
+                                  __in LPDDBLTFX lpDDBltFx)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->Blt(lpDestRect,lpDDSrcSurface,lpSrcRect,dwFlags,lpDDBltFx);
+}
+
+
+STDMETHODIMP CAggDrawSurface::BltBatch(__in_ecount(dwCount) LPDDBLTBATCH lpDDBltBatch,DWORD dwCount,DWORD dwFlags)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->BltBatch(lpDDBltBatch,dwCount,dwFlags);
+}
+
+
+STDMETHODIMP CAggDrawSurface::BltFast(DWORD dwX,DWORD dwY,
+                                      __in LPDIRECTDRAWSURFACE lpDDSrcSurface,
+                                      __in LPRECT lpSrcRect,
+                                      DWORD dwTrans)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->BltFast(dwX,dwY,lpDDSrcSurface,lpSrcRect,dwTrans);
+}
+
+
+STDMETHODIMP CAggDrawSurface::DeleteAttachedSurface(DWORD dwFlags,
+                                                    __in LPDIRECTDRAWSURFACE lpDDSAttachedSurface)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->DeleteAttachedSurface(dwFlags,lpDDSAttachedSurface);
+}
+
+
+STDMETHODIMP CAggDrawSurface::EnumAttachedSurfaces(__in LPVOID lpContext,
+                                                   __in LPDDENUMSURFACESCALLBACK lpEnumSurfacesCallback)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->EnumAttachedSurfaces(lpContext,lpEnumSurfacesCallback);
+}
+
+
+STDMETHODIMP CAggDrawSurface::EnumOverlayZOrders(DWORD dwFlags,
+                                                 __in LPVOID lpContext,
+                                                 __in LPDDENUMSURFACESCALLBACK lpfnCallback)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->EnumOverlayZOrders(dwFlags,lpContext,lpfnCallback);
+}
+
+
+STDMETHODIMP CAggDrawSurface::Flip(__in LPDIRECTDRAWSURFACE lpDDSurfaceTargetOverride,DWORD dwFlags)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->Flip(lpDDSurfaceTargetOverride,dwFlags);
+}
+
+
+STDMETHODIMP CAggDrawSurface::GetAttachedSurface(__in LPDDSCAPS lpDDSCaps,
+                                                 __deref_out LPDIRECTDRAWSURFACE *lplpDDAttachedSurface)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->GetAttachedSurface(lpDDSCaps,lplpDDAttachedSurface);
+}
+
+
+STDMETHODIMP CAggDrawSurface::GetBltStatus(DWORD dwFlags)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->GetBltStatus(dwFlags);
+}
+
+
+STDMETHODIMP CAggDrawSurface::GetCaps(__out LPDDSCAPS lpDDSCaps)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->GetCaps(lpDDSCaps);
+}
+
+
+STDMETHODIMP CAggDrawSurface::GetClipper(__deref_out LPDIRECTDRAWCLIPPER *lplpDDClipper)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->GetClipper(lplpDDClipper);
+}
+
+
+STDMETHODIMP CAggDrawSurface::GetColorKey(DWORD dwFlags,__out LPDDCOLORKEY lpDDColorKey)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->GetColorKey(dwFlags,lpDDColorKey);
+}
+
+
+STDMETHODIMP CAggDrawSurface::GetDC(__out HDC *lphDC)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->GetDC(lphDC);
+}
+
+
+STDMETHODIMP CAggDrawSurface::GetFlipStatus(DWORD dwFlags)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->GetFlipStatus(dwFlags);
+}
+
+
+STDMETHODIMP CAggDrawSurface::GetOverlayPosition(__out LPLONG lpdwX,__out LPLONG lpdwY)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->GetOverlayPosition(lpdwX,lpdwY);
+}
+
+
+STDMETHODIMP CAggDrawSurface::GetPalette(__deref_out LPDIRECTDRAWPALETTE *lplpDDPalette)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->GetPalette(lplpDDPalette);
+}
+
+
+STDMETHODIMP CAggDrawSurface::GetPixelFormat(__out LPDDPIXELFORMAT lpDDPixelFormat)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->GetPixelFormat(lpDDPixelFormat);
+}
+
+
+// A bit of a warning here: Our media samples in DirectShow aggregate on
+// IDirectDraw and IDirectDrawSurface (ie are available through IMediaSample
+// by QueryInterface). Unfortunately the underlying DirectDraw code cannot
+// be aggregated so we have to use these classes. The snag is that when we
+// call a different surface and pass in this interface as perhaps the source
+// surface the call will fail because DirectDraw dereferences the pointer to
+// get at its private data structures. Therefore we supply this workaround to give
+// access to the real IDirectDraw surface. A filter can call GetSurfaceDesc
+// and we will fill in the lpSurface pointer with the real underlying surface
+
+STDMETHODIMP CAggDrawSurface::GetSurfaceDesc(__out LPDDSURFACEDESC lpDDSurfaceDesc)
+{
+    ASSERT(m_pDirectDrawSurface);
+
+    // First call down to the underlying DirectDraw
+
+    HRESULT hr = m_pDirectDrawSurface->GetSurfaceDesc(lpDDSurfaceDesc);
+    if (FAILED(hr)) {
+        return hr;
+    }
+
+    // Store the real DirectDrawSurface interface
+    lpDDSurfaceDesc->lpSurface = m_pDirectDrawSurface;
+    return hr;
+}
+
+
+STDMETHODIMP CAggDrawSurface::Initialize(__in LPDIRECTDRAW lpDD,__in LPDDSURFACEDESC lpDDSurfaceDesc)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->Initialize(lpDD,lpDDSurfaceDesc);
+}
+
+
+STDMETHODIMP CAggDrawSurface::IsLost()
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->IsLost();
+}
+
+
+STDMETHODIMP CAggDrawSurface::Lock(__in LPRECT lpDestRect,
+                                   __inout LPDDSURFACEDESC lpDDSurfaceDesc,
+                                   DWORD dwFlags,
+                                   HANDLE hEvent)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->Lock(lpDestRect,lpDDSurfaceDesc,dwFlags,hEvent);
+}
+
+
+STDMETHODIMP CAggDrawSurface::ReleaseDC(HDC hDC)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->ReleaseDC(hDC);
+}
+
+
+STDMETHODIMP CAggDrawSurface::Restore()
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->Restore();
+}
+
+
+STDMETHODIMP CAggDrawSurface::SetClipper(__in LPDIRECTDRAWCLIPPER lpDDClipper)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->SetClipper(lpDDClipper);
+}
+
+
+STDMETHODIMP CAggDrawSurface::SetColorKey(DWORD dwFlags,__in LPDDCOLORKEY lpDDColorKey)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->SetColorKey(dwFlags,lpDDColorKey);
+}
+
+
+STDMETHODIMP CAggDrawSurface::SetOverlayPosition(LONG dwX,LONG dwY)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->SetOverlayPosition(dwX,dwY);
+}
+
+
+STDMETHODIMP CAggDrawSurface::SetPalette(__in LPDIRECTDRAWPALETTE lpDDPalette)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->SetPalette(lpDDPalette);
+}
+
+
+STDMETHODIMP CAggDrawSurface::Unlock(__in LPVOID lpSurfaceData)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->Unlock(lpSurfaceData);
+}
+
+
+STDMETHODIMP CAggDrawSurface::UpdateOverlay(__in LPRECT lpSrcRect,
+                                            __in LPDIRECTDRAWSURFACE lpDDDestSurface,
+                                            __in LPRECT lpDestRect,
+                                            DWORD dwFlags,
+                                            __in LPDDOVERLAYFX lpDDOverlayFX)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->UpdateOverlay(lpSrcRect,lpDDDestSurface,lpDestRect,dwFlags,lpDDOverlayFX);
+}
+
+
+STDMETHODIMP CAggDrawSurface::UpdateOverlayDisplay(DWORD dwFlags)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->UpdateOverlayDisplay(dwFlags);
+}
+
+
+STDMETHODIMP CAggDrawSurface::UpdateOverlayZOrder(DWORD dwFlags,__in LPDIRECTDRAWSURFACE lpDDSReference)
+{
+    ASSERT(m_pDirectDrawSurface);
+    return m_pDirectDrawSurface->UpdateOverlayZOrder(dwFlags,lpDDSReference);
+}
+
+
+// DirectShow must work on multiple platforms.  In particular, it also runs on
+// Windows NT 3.51 which does not have DirectDraw capabilities. The filters
+// cannot therefore link statically to the DirectDraw library. To make their
+// lives that little bit easier we provide this class that manages loading
+// and unloading the library and creating the initial IDirectDraw interface
+
+CLoadDirectDraw::CLoadDirectDraw() :
+    m_pDirectDraw(NULL),
+    m_hDirectDraw(NULL)
+{
+}
+
+
+// Destructor forces unload
+
+CLoadDirectDraw::~CLoadDirectDraw()
+{
+    ReleaseDirectDraw();
+
+    if (m_hDirectDraw) {
+        NOTE("Unloading library");
+        FreeLibrary(m_hDirectDraw);
+    }
+}
+
+
+// We can't be sure that DirectDraw is always available so we can't statically
+// link to the library. Therefore we load the library, get the function entry
+// point addresses and call them to create the driver objects. We return S_OK
+// if we manage to load DirectDraw correctly otherwise we return E_NOINTERFACE
+// We initialise a DirectDraw instance by explicitely loading the library and
+// calling GetProcAddress on the DirectDrawCreate entry point that it exports
+
+// On a multi monitor system, we can get the DirectDraw object for any
+// monitor (device) with the optional szDevice parameter
+
+HRESULT CLoadDirectDraw::LoadDirectDraw(__in LPSTR szDevice)
+{
+    PDRAWCREATE pDrawCreate;
+    PDRAWENUM pDrawEnum;
+    LPDIRECTDRAWENUMERATEEXA pDrawEnumEx;
+    HRESULT hr = NOERROR;
+
+    NOTE("Entering DoLoadDirectDraw");
+
+    // Is DirectDraw already loaded
+
+    if (m_pDirectDraw) {
+        NOTE("Already loaded");
+        ASSERT(m_hDirectDraw);
+        return NOERROR;
+    }
+
+    // Make sure the library is available
+
+    if(!m_hDirectDraw)
+    {
+        UINT ErrorMode = SetErrorMode(SEM_NOOPENFILEERRORBOX);
+        m_hDirectDraw = LoadLibrary(TEXT("DDRAW.DLL"));
+        SetErrorMode(ErrorMode);
+
+        if (m_hDirectDraw == NULL) {
+            DbgLog((LOG_ERROR,1,TEXT("Can't load DDRAW.DLL")));
+            NOTE("No library");
+            return E_NOINTERFACE;
+        }
+    }
+
+    // Get the DLL address for the creator function
+
+    pDrawCreate = (PDRAWCREATE)GetProcAddress(m_hDirectDraw,"DirectDrawCreate");
+    // force ANSI, we assume it
+    pDrawEnum = (PDRAWENUM)GetProcAddress(m_hDirectDraw,"DirectDrawEnumerateA");
+    pDrawEnumEx = (LPDIRECTDRAWENUMERATEEXA)GetProcAddress(m_hDirectDraw,
+						"DirectDrawEnumerateExA");
+
+    // We don't NEED DirectDrawEnumerateEx, that's just for multimon stuff
+    if (pDrawCreate == NULL || pDrawEnum == NULL) {
+        DbgLog((LOG_ERROR,1,TEXT("Can't get functions: Create=%x Enum=%x"),
+			pDrawCreate, pDrawEnum));
+        NOTE("No entry point");
+        ReleaseDirectDraw();
+        return E_NOINTERFACE;
+    }
+
+    DbgLog((LOG_TRACE,3,TEXT("Creating DDraw for device %s"),
+					szDevice ? szDevice : "<NULL>"));
+
+    // Create a DirectDraw display provider for this device, using the fancy
+    // multimon-aware version, if it exists
+    if (pDrawEnumEx)
+        m_pDirectDraw = DirectDrawCreateFromDeviceEx(szDevice, pDrawCreate,
+								pDrawEnumEx);
+    else
+        m_pDirectDraw = DirectDrawCreateFromDevice(szDevice, pDrawCreate,
+								pDrawEnum);
+
+    if (m_pDirectDraw == NULL) {
+            DbgLog((LOG_ERROR,1,TEXT("Can't create DDraw")));
+            NOTE("No instance");
+            ReleaseDirectDraw();
+            return E_NOINTERFACE;
+    }
+    return NOERROR;
+}
+
+
+// Called to release any DirectDraw provider we previously loaded. We may be
+// called at any time especially when something goes horribly wrong and when
+// we need to clean up before returning so we can't guarantee that all state
+// variables are consistent so free only those really allocated allocated
+// This should only be called once all reference counts have been released
+
+void CLoadDirectDraw::ReleaseDirectDraw()
+{
+    NOTE("Releasing DirectDraw driver");
+
+    // Release any DirectDraw provider interface
+
+    if (m_pDirectDraw) {
+        NOTE("Releasing instance");
+        m_pDirectDraw->Release();
+        m_pDirectDraw = NULL;
+    }
+
+}
+
+
+// Return NOERROR (S_OK) if DirectDraw has been loaded by this object
+
+HRESULT CLoadDirectDraw::IsDirectDrawLoaded()
+{
+    NOTE("Entering IsDirectDrawLoaded");
+
+    if (m_pDirectDraw == NULL) {
+        NOTE("DirectDraw not loaded");
+        return S_FALSE;
+    }
+    return NOERROR;
+}
+
+
+// Return the IDirectDraw interface we look after
+
+LPDIRECTDRAW CLoadDirectDraw::GetDirectDraw()
+{
+    NOTE("Entering GetDirectDraw");
+
+    if (m_pDirectDraw == NULL) {
+        NOTE("No DirectDraw");
+        return NULL;
+    }
+
+    NOTE("Returning DirectDraw");
+    m_pDirectDraw->AddRef();
+    return m_pDirectDraw;
+}
+
+
+// Are we running on Direct Draw version 1?  We need to find out as
+// we rely on specific bug fixes in DirectDraw 2 for fullscreen playback. To
+// find out, we simply see if it supports IDirectDraw2.  Only version 2 and
+// higher support this.
+
+BOOL CLoadDirectDraw::IsDirectDrawVersion1()
+{
+
+    if (m_pDirectDraw == NULL)
+	return FALSE;
+
+    IDirectDraw2 *p = NULL;
+    HRESULT hr = m_pDirectDraw->QueryInterface(IID_IDirectDraw2, (void **)&p);
+    if (p)
+	p->Release();
+    if (hr == NOERROR) {
+        DbgLog((LOG_TRACE,3,TEXT("Direct Draw Version 2 or greater")));
+	return FALSE;
+    } else {
+        DbgLog((LOG_TRACE,3,TEXT("Direct Draw Version 1")));
+	return TRUE;
+    }
+}

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/videoctl.h

@@ -0,0 +1,168 @@
+//------------------------------------------------------------------------------
+// File: VideoCtl.h
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __VIDEOCTL__
+#define __VIDEOCTL__
+
+// These help with property page implementations. The first can be used to
+// load any string from a resource file. The buffer to load into is passed
+// as an input parameter. The same buffer is the return value if the string
+// was found otherwise it returns TEXT(""). The GetDialogSize is passed the
+// resource ID of a dialog box and returns the size of it in screen pixels
+
+#define STR_MAX_LENGTH 256
+LPTSTR WINAPI StringFromResource(__out_ecount(STR_MAX_LENGTH) LPTSTR pBuffer, int iResourceID);
+
+#ifdef UNICODE
+#define WideStringFromResource StringFromResource
+LPSTR WINAPI StringFromResource(__out_ecount(STR_MAX_LENGTH) LPSTR pBuffer, int iResourceID);
+#else
+LPWSTR WINAPI WideStringFromResource(__out_ecount(STR_MAX_LENGTH) LPWSTR pBuffer, int iResourceID);
+#endif
+
+
+BOOL WINAPI GetDialogSize(int iResourceID,     // Dialog box resource identifier
+                          DLGPROC pDlgProc,    // Pointer to dialog procedure
+                          LPARAM lParam,       // Any user data wanted in pDlgProc
+                          __out SIZE *pResult);// Returns the size of dialog box
+
+// Class that aggregates an IDirectDraw interface
+
+class CAggDirectDraw : public IDirectDraw, public CUnknown
+{
+protected:
+
+    LPDIRECTDRAW m_pDirectDraw;
+
+public:
+
+    DECLARE_IUNKNOWN
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid,__deref_out void **ppv);
+
+    // Constructor and destructor
+
+    CAggDirectDraw(__in_opt LPCTSTR pName,__inout_opt LPUNKNOWN pUnk) :
+        CUnknown(pName,pUnk),
+        m_pDirectDraw(NULL) { };
+
+    virtual CAggDirectDraw::~CAggDirectDraw() { };
+
+    // Set the object we should be aggregating
+    void SetDirectDraw(__inout LPDIRECTDRAW pDirectDraw) {
+        m_pDirectDraw = pDirectDraw;
+    }
+
+    // IDirectDraw methods
+
+    STDMETHODIMP Compact();
+    STDMETHODIMP CreateClipper(DWORD dwFlags,__deref_out LPDIRECTDRAWCLIPPER *lplpDDClipper,__inout_opt IUnknown *pUnkOuter);
+    STDMETHODIMP CreatePalette(DWORD dwFlags,__in LPPALETTEENTRY lpColorTable,__deref_out LPDIRECTDRAWPALETTE *lplpDDPalette,__inout_opt IUnknown *pUnkOuter);
+    STDMETHODIMP CreateSurface(__in LPDDSURFACEDESC lpDDSurfaceDesc,__deref_out LPDIRECTDRAWSURFACE *lplpDDSurface,__inout_opt IUnknown *pUnkOuter);
+    STDMETHODIMP DuplicateSurface(__in LPDIRECTDRAWSURFACE lpDDSurface,__deref_out LPDIRECTDRAWSURFACE *lplpDupDDSurface);
+    STDMETHODIMP EnumDisplayModes(DWORD dwSurfaceDescCount,__in LPDDSURFACEDESC lplpDDSurfaceDescList,__in LPVOID lpContext,__in LPDDENUMMODESCALLBACK lpEnumCallback);
+    STDMETHODIMP EnumSurfaces(DWORD dwFlags,__in LPDDSURFACEDESC lpDDSD,__in LPVOID lpContext,__in LPDDENUMSURFACESCALLBACK lpEnumCallback);
+    STDMETHODIMP FlipToGDISurface();
+    STDMETHODIMP GetCaps(__out LPDDCAPS lpDDDriverCaps,__out LPDDCAPS lpDDHELCaps);
+    STDMETHODIMP GetDisplayMode(__out LPDDSURFACEDESC lpDDSurfaceDesc);
+    STDMETHODIMP GetFourCCCodes(__inout LPDWORD lpNumCodes,__out_ecount(*lpNumCodes) LPDWORD lpCodes);
+    STDMETHODIMP GetGDISurface(__deref_out LPDIRECTDRAWSURFACE *lplpGDIDDSurface);
+    STDMETHODIMP GetMonitorFrequency(__out LPDWORD lpdwFrequency);
+    STDMETHODIMP GetScanLine(__out LPDWORD lpdwScanLine);
+    STDMETHODIMP GetVerticalBlankStatus(__out LPBOOL lpblsInVB);
+    STDMETHODIMP Initialize(__in GUID *lpGUID);
+    STDMETHODIMP RestoreDisplayMode();
+    STDMETHODIMP SetCooperativeLevel(HWND hWnd,DWORD dwFlags);
+    STDMETHODIMP SetDisplayMode(DWORD dwWidth,DWORD dwHeight,DWORD dwBpp);
+    STDMETHODIMP WaitForVerticalBlank(DWORD dwFlags,HANDLE hEvent);
+};
+
+
+// Class that aggregates an IDirectDrawSurface interface
+
+class CAggDrawSurface : public IDirectDrawSurface, public CUnknown
+{
+protected:
+
+    LPDIRECTDRAWSURFACE m_pDirectDrawSurface;
+
+public:
+
+    DECLARE_IUNKNOWN
+    STDMETHODIMP NonDelegatingQueryInterface(REFIID riid,__deref_out void **ppv);
+
+    // Constructor and destructor
+
+    CAggDrawSurface(__in_opt LPCTSTR pName,__inout_opt LPUNKNOWN pUnk) :
+        CUnknown(pName,pUnk),
+        m_pDirectDrawSurface(NULL) { };
+
+    virtual ~CAggDrawSurface() { };
+
+    // Set the object we should be aggregating
+    void SetDirectDrawSurface(__inout LPDIRECTDRAWSURFACE pDirectDrawSurface) {
+        m_pDirectDrawSurface = pDirectDrawSurface;
+    }
+
+    // IDirectDrawSurface methods
+
+    STDMETHODIMP AddAttachedSurface(__in LPDIRECTDRAWSURFACE lpDDSAttachedSurface);
+    STDMETHODIMP AddOverlayDirtyRect(__in LPRECT lpRect);
+    STDMETHODIMP Blt(__in LPRECT lpDestRect,__in LPDIRECTDRAWSURFACE lpDDSrcSurface,__in LPRECT lpSrcRect,DWORD dwFlags,__in LPDDBLTFX lpDDBltFx);
+    STDMETHODIMP BltBatch(__in_ecount(dwCount) LPDDBLTBATCH lpDDBltBatch,DWORD dwCount,DWORD dwFlags);
+    STDMETHODIMP BltFast(DWORD dwX,DWORD dwY,__in LPDIRECTDRAWSURFACE lpDDSrcSurface,__in LPRECT lpSrcRect,DWORD dwTrans);
+    STDMETHODIMP DeleteAttachedSurface(DWORD dwFlags,__in LPDIRECTDRAWSURFACE lpDDSAttachedSurface);
+    STDMETHODIMP EnumAttachedSurfaces(__in LPVOID lpContext,__in LPDDENUMSURFACESCALLBACK lpEnumSurfacesCallback);
+    STDMETHODIMP EnumOverlayZOrders(DWORD dwFlags,__in LPVOID lpContext,__in LPDDENUMSURFACESCALLBACK lpfnCallback);
+    STDMETHODIMP Flip(__in LPDIRECTDRAWSURFACE lpDDSurfaceTargetOverride,DWORD dwFlags);
+    STDMETHODIMP GetAttachedSurface(__in LPDDSCAPS lpDDSCaps,__deref_out LPDIRECTDRAWSURFACE *lplpDDAttachedSurface);
+    STDMETHODIMP GetBltStatus(DWORD dwFlags);
+    STDMETHODIMP GetCaps(__out LPDDSCAPS lpDDSCaps);
+    STDMETHODIMP GetClipper(__deref_out LPDIRECTDRAWCLIPPER *lplpDDClipper);
+    STDMETHODIMP GetColorKey(DWORD dwFlags,__out LPDDCOLORKEY lpDDColorKey);
+    STDMETHODIMP GetDC(__out HDC *lphDC);
+    STDMETHODIMP GetFlipStatus(DWORD dwFlags);
+    STDMETHODIMP GetOverlayPosition(__out LPLONG lpdwX,__out LPLONG lpdwY);
+    STDMETHODIMP GetPalette(__deref_out LPDIRECTDRAWPALETTE *lplpDDPalette);
+    STDMETHODIMP GetPixelFormat(__out LPDDPIXELFORMAT lpDDPixelFormat);
+    STDMETHODIMP GetSurfaceDesc(__out LPDDSURFACEDESC lpDDSurfaceDesc);
+    STDMETHODIMP Initialize(__in LPDIRECTDRAW lpDD,__in LPDDSURFACEDESC lpDDSurfaceDesc);
+    STDMETHODIMP IsLost();
+    STDMETHODIMP Lock(__in LPRECT lpDestRect,__inout LPDDSURFACEDESC lpDDSurfaceDesc,DWORD dwFlags,HANDLE hEvent);
+    STDMETHODIMP ReleaseDC(HDC hDC);
+    STDMETHODIMP Restore();
+    STDMETHODIMP SetClipper(__in LPDIRECTDRAWCLIPPER lpDDClipper);
+    STDMETHODIMP SetColorKey(DWORD dwFlags,__in LPDDCOLORKEY lpDDColorKey);
+    STDMETHODIMP SetOverlayPosition(LONG dwX,LONG dwY);
+    STDMETHODIMP SetPalette(__in LPDIRECTDRAWPALETTE lpDDPalette);
+    STDMETHODIMP Unlock(__in LPVOID lpSurfaceData);
+    STDMETHODIMP UpdateOverlay(__in LPRECT lpSrcRect,__in LPDIRECTDRAWSURFACE lpDDDestSurface,__in LPRECT lpDestRect,DWORD dwFlags,__in LPDDOVERLAYFX lpDDOverlayFX);
+    STDMETHODIMP UpdateOverlayDisplay(DWORD dwFlags);
+    STDMETHODIMP UpdateOverlayZOrder(DWORD dwFlags,__in LPDIRECTDRAWSURFACE lpDDSReference);
+};
+
+
+class CLoadDirectDraw
+{
+    LPDIRECTDRAW m_pDirectDraw;     // The DirectDraw driver instance
+    HINSTANCE m_hDirectDraw;        // Handle to the loaded library
+
+public:
+
+    CLoadDirectDraw();
+    ~CLoadDirectDraw();
+
+    HRESULT LoadDirectDraw(__in LPSTR szDevice);
+    void ReleaseDirectDraw();
+    HRESULT IsDirectDrawLoaded();
+    LPDIRECTDRAW GetDirectDraw();
+    BOOL IsDirectDrawVersion1();
+};
+
+#endif // __VIDEOCTL__
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/vtrans.cpp

@@ -0,0 +1,468 @@
+//------------------------------------------------------------------------------
+// File: Vtrans.cpp
+//
+// Desc: DirectShow base classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#include <measure.h>
+// #include <vtransfr.h>         // now in precomp file streams.h
+
+CVideoTransformFilter::CVideoTransformFilter
+    ( __in_opt LPCTSTR pName, __inout_opt LPUNKNOWN pUnk, REFCLSID clsid)
+    : CTransformFilter(pName, pUnk, clsid)
+    , m_itrLate(0)
+    , m_nKeyFramePeriod(0)      // No QM until we see at least 2 key frames
+    , m_nFramesSinceKeyFrame(0)
+    , m_bSkipping(FALSE)
+    , m_tDecodeStart(0)
+    , m_itrAvgDecode(300000)    // 30mSec - probably allows skipping
+    , m_bQualityChanged(FALSE)
+{
+#ifdef PERF
+    RegisterPerfId();
+#endif //  PERF
+}
+
+
+CVideoTransformFilter::~CVideoTransformFilter()
+{
+  // nothing to do
+}
+
+
+// Reset our quality management state
+
+HRESULT CVideoTransformFilter::StartStreaming()
+{
+    m_itrLate = 0;
+    m_nKeyFramePeriod = 0;       // No QM until we see at least 2 key frames
+    m_nFramesSinceKeyFrame = 0;
+    m_bSkipping = FALSE;
+    m_tDecodeStart = 0;
+    m_itrAvgDecode = 300000;     // 30mSec - probably allows skipping
+    m_bQualityChanged = FALSE;
+    m_bSampleSkipped = FALSE;
+    return NOERROR;
+}
+
+
+// Overriden to reset quality management information
+
+HRESULT CVideoTransformFilter::EndFlush()
+{
+    {
+        //  Synchronize
+        CAutoLock lck(&m_csReceive);
+
+        // Reset our stats
+        //
+        // Note - we don't want to call derived classes here,
+        // we only want to reset our internal variables and this
+        // is a convenient way to do it
+        CVideoTransformFilter::StartStreaming();
+    }
+    return CTransformFilter::EndFlush();
+}
+
+
+HRESULT CVideoTransformFilter::AbortPlayback(HRESULT hr)
+{
+    NotifyEvent(EC_ERRORABORT, hr, 0);
+    m_pOutput->DeliverEndOfStream();
+    return hr;
+}
+
+
+// Receive()
+//
+// Accept a sample from upstream, decide whether to process it
+// or drop it.  If we process it then get a buffer from the
+// allocator of the downstream connection, transform it into the
+// new buffer and deliver it to the downstream filter.
+// If we decide not to process it then we do not get a buffer.
+
+// Remember that although this code will notice format changes coming into
+// the input pin, it will NOT change its output format if that results
+// in the filter needing to make a corresponding output format change.  Your
+// derived filter will have to take care of that.  (eg. a palette change if
+// the input and output is an 8 bit format).  If the input sample is discarded
+// and nothing is sent out for this Receive, please remember to put the format
+// change on the first output sample that you actually do send.
+// If your filter will produce the same output type even when the input type
+// changes, then this base class code will do everything you need.
+
+HRESULT CVideoTransformFilter::Receive(IMediaSample *pSample)
+{
+    // If the next filter downstream is the video renderer, then it may
+    // be able to operate in DirectDraw mode which saves copying the data
+    // and gives higher performance.  In that case the buffer which we
+    // get from GetDeliveryBuffer will be a DirectDraw buffer, and
+    // drawing into this buffer draws directly onto the display surface.
+    // This means that any waiting for the correct time to draw occurs
+    // during GetDeliveryBuffer, and that once the buffer is given to us
+    // the video renderer will count it in its statistics as a frame drawn.
+    // This means that any decision to drop the frame must be taken before
+    // calling GetDeliveryBuffer.
+
+    ASSERT(CritCheckIn(&m_csReceive));
+    AM_MEDIA_TYPE *pmtOut, *pmt;
+#ifdef DEBUG
+    FOURCCMap fccOut;
+#endif
+    HRESULT hr;
+    ASSERT(pSample);
+    IMediaSample * pOutSample;
+
+    // If no output pin to deliver to then no point sending us data
+    ASSERT (m_pOutput != NULL) ;
+
+    // The source filter may dynamically ask us to start transforming from a
+    // different media type than the one we're using now.  If we don't, we'll
+    // draw garbage. (typically, this is a palette change in the movie,
+    // but could be something more sinister like the compression type changing,
+    // or even the video size changing)
+
+#define rcS1 ((VIDEOINFOHEADER *)(pmt->pbFormat))->rcSource
+#define rcT1 ((VIDEOINFOHEADER *)(pmt->pbFormat))->rcTarget
+
+    pSample->GetMediaType(&pmt);
+    if (pmt != NULL && pmt->pbFormat != NULL) {
+
+	// spew some debug output
+	ASSERT(!IsEqualGUID(pmt->majortype, GUID_NULL));
+#ifdef DEBUG
+        fccOut.SetFOURCC(&pmt->subtype);
+	LONG lCompression = HEADER(pmt->pbFormat)->biCompression;
+	LONG lBitCount = HEADER(pmt->pbFormat)->biBitCount;
+	LONG lStride = (HEADER(pmt->pbFormat)->biWidth * lBitCount + 7) / 8;
+	lStride = (lStride + 3) & ~3;
+        DbgLog((LOG_TRACE,3,TEXT("*Changing input type on the fly to")));
+        DbgLog((LOG_TRACE,3,TEXT("FourCC: %lx Compression: %lx BitCount: %ld"),
+		fccOut.GetFOURCC(), lCompression, lBitCount));
+        DbgLog((LOG_TRACE,3,TEXT("biHeight: %ld rcDst: (%ld, %ld, %ld, %ld)"),
+		HEADER(pmt->pbFormat)->biHeight,
+		rcT1.left, rcT1.top, rcT1.right, rcT1.bottom));
+        DbgLog((LOG_TRACE,3,TEXT("rcSrc: (%ld, %ld, %ld, %ld) Stride: %ld"),
+		rcS1.left, rcS1.top, rcS1.right, rcS1.bottom,
+		lStride));
+#endif
+
+	// now switch to using the new format.  I am assuming that the
+	// derived filter will do the right thing when its media type is
+	// switched and streaming is restarted.
+
+	StopStreaming();
+	m_pInput->CurrentMediaType() = *pmt;
+	DeleteMediaType(pmt);
+	// if this fails, playback will stop, so signal an error
+	hr = StartStreaming();
+	if (FAILED(hr)) {
+	    return AbortPlayback(hr);
+	}
+    }
+
+    // Now that we have noticed any format changes on the input sample, it's
+    // OK to discard it.
+
+    if (ShouldSkipFrame(pSample)) {
+        MSR_NOTE(m_idSkip);
+        m_bSampleSkipped = TRUE;
+        return NOERROR;
+    }
+
+    // Set up the output sample
+    hr = InitializeOutputSample(pSample, &pOutSample);
+
+    if (FAILED(hr)) {
+        return hr;
+    }
+
+    m_bSampleSkipped = FALSE;
+
+    // The renderer may ask us to on-the-fly to start transforming to a
+    // different format.  If we don't obey it, we'll draw garbage
+
+#define rcS ((VIDEOINFOHEADER *)(pmtOut->pbFormat))->rcSource
+#define rcT ((VIDEOINFOHEADER *)(pmtOut->pbFormat))->rcTarget
+
+    pOutSample->GetMediaType(&pmtOut);
+    if (pmtOut != NULL && pmtOut->pbFormat != NULL) {
+
+	// spew some debug output
+	ASSERT(!IsEqualGUID(pmtOut->majortype, GUID_NULL));
+#ifdef DEBUG
+        fccOut.SetFOURCC(&pmtOut->subtype);
+	LONG lCompression = HEADER(pmtOut->pbFormat)->biCompression;
+	LONG lBitCount = HEADER(pmtOut->pbFormat)->biBitCount;
+	LONG lStride = (HEADER(pmtOut->pbFormat)->biWidth * lBitCount + 7) / 8;
+	lStride = (lStride + 3) & ~3;
+        DbgLog((LOG_TRACE,3,TEXT("*Changing output type on the fly to")));
+        DbgLog((LOG_TRACE,3,TEXT("FourCC: %lx Compression: %lx BitCount: %ld"),
+		fccOut.GetFOURCC(), lCompression, lBitCount));
+        DbgLog((LOG_TRACE,3,TEXT("biHeight: %ld rcDst: (%ld, %ld, %ld, %ld)"),
+		HEADER(pmtOut->pbFormat)->biHeight,
+		rcT.left, rcT.top, rcT.right, rcT.bottom));
+        DbgLog((LOG_TRACE,3,TEXT("rcSrc: (%ld, %ld, %ld, %ld) Stride: %ld"),
+		rcS.left, rcS.top, rcS.right, rcS.bottom,
+		lStride));
+#endif
+
+	// now switch to using the new format.  I am assuming that the
+	// derived filter will do the right thing when its media type is
+	// switched and streaming is restarted.
+
+	StopStreaming();
+	m_pOutput->CurrentMediaType() = *pmtOut;
+	DeleteMediaType(pmtOut);
+	hr = StartStreaming();
+
+	if (SUCCEEDED(hr)) {
+ 	    // a new format, means a new empty buffer, so wait for a keyframe
+	    // before passing anything on to the renderer.
+	    // !!! a keyframe may never come, so give up after 30 frames
+            DbgLog((LOG_TRACE,3,TEXT("Output format change means we must wait for a keyframe")));
+	    m_nWaitForKey = 30;
+
+	// if this fails, playback will stop, so signal an error
+	} else {
+
+            //  Must release the sample before calling AbortPlayback
+            //  because we might be holding the win16 lock or
+            //  ddraw lock
+            pOutSample->Release();
+	    AbortPlayback(hr);
+            return hr;
+	}
+    }
+
+    // After a discontinuity, we need to wait for the next key frame
+    if (pSample->IsDiscontinuity() == S_OK) {
+        DbgLog((LOG_TRACE,3,TEXT("Non-key discontinuity - wait for keyframe")));
+	m_nWaitForKey = 30;
+    }
+
+    // Start timing the transform (and log it if PERF is defined)
+
+    if (SUCCEEDED(hr)) {
+        m_tDecodeStart = timeGetTime();
+        MSR_START(m_idTransform);
+
+        // have the derived class transform the data
+        hr = Transform(pSample, pOutSample);
+
+        // Stop the clock (and log it if PERF is defined)
+        MSR_STOP(m_idTransform);
+        m_tDecodeStart = timeGetTime()-m_tDecodeStart;
+        m_itrAvgDecode = m_tDecodeStart*(10000/16) + 15*(m_itrAvgDecode/16);
+
+        // Maybe we're waiting for a keyframe still?
+        if (m_nWaitForKey)
+            m_nWaitForKey--;
+        if (m_nWaitForKey && pSample->IsSyncPoint() == S_OK)
+	    m_nWaitForKey = FALSE;
+
+        // if so, then we don't want to pass this on to the renderer
+        if (m_nWaitForKey && hr == NOERROR) {
+            DbgLog((LOG_TRACE,3,TEXT("still waiting for a keyframe")));
+	    hr = S_FALSE;
+	}
+    }
+
+    if (FAILED(hr)) {
+        DbgLog((LOG_TRACE,1,TEXT("Error from video transform")));
+    } else {
+        // the Transform() function can return S_FALSE to indicate that the
+        // sample should not be delivered; we only deliver the sample if it's
+        // really S_OK (same as NOERROR, of course.)
+        // Try not to return S_FALSE to a direct draw buffer (it's wasteful)
+        // Try to take the decision earlier - before you get it.
+
+        if (hr == NOERROR) {
+    	    hr = m_pOutput->Deliver(pOutSample);
+        } else {
+            // S_FALSE returned from Transform is a PRIVATE agreement
+            // We should return NOERROR from Receive() in this case because returning S_FALSE
+            // from Receive() means that this is the end of the stream and no more data should
+            // be sent.
+            if (S_FALSE == hr) {
+
+                //  We must Release() the sample before doing anything
+                //  like calling the filter graph because having the
+                //  sample means we may have the DirectDraw lock
+                //  (== win16 lock on some versions)
+                pOutSample->Release();
+                m_bSampleSkipped = TRUE;
+                if (!m_bQualityChanged) {
+                    m_bQualityChanged = TRUE;
+                    NotifyEvent(EC_QUALITY_CHANGE,0,0);
+                }
+                return NOERROR;
+            }
+        }
+    }
+
+    // release the output buffer. If the connected pin still needs it,
+    // it will have addrefed it itself.
+    pOutSample->Release();
+    ASSERT(CritCheckIn(&m_csReceive));
+
+    return hr;
+}
+
+
+
+BOOL CVideoTransformFilter::ShouldSkipFrame( IMediaSample * pIn)
+{
+    REFERENCE_TIME trStart, trStopAt;
+    HRESULT hr = pIn->GetTime(&trStart, &trStopAt);
+
+    // Don't skip frames with no timestamps
+    if (hr != S_OK)
+	return FALSE;
+
+    int itrFrame = (int)(trStopAt - trStart);  // frame duration
+
+    if(S_OK==pIn->IsSyncPoint()) {
+        MSR_INTEGER(m_idFrameType, 1);
+        if ( m_nKeyFramePeriod < m_nFramesSinceKeyFrame ) {
+            // record the max
+            m_nKeyFramePeriod = m_nFramesSinceKeyFrame;
+        }
+        m_nFramesSinceKeyFrame = 0;
+        m_bSkipping = FALSE;
+    } else {
+        MSR_INTEGER(m_idFrameType, 2);
+        if (  m_nFramesSinceKeyFrame>m_nKeyFramePeriod
+           && m_nKeyFramePeriod>0
+           ) {
+            // We haven't seen the key frame yet, but we were clearly being
+            // overoptimistic about how frequent they are.
+            m_nKeyFramePeriod = m_nFramesSinceKeyFrame;
+        }
+    }
+
+
+    // Whatever we might otherwise decide,
+    // if we are taking only a small fraction of the required frame time to decode
+    // then any quality problems are actually coming from somewhere else.
+    // Could be a net problem at the source for instance.  In this case there's
+    // no point in us skipping frames here.
+    if (m_itrAvgDecode*4>itrFrame) {
+
+        // Don't skip unless we are at least a whole frame late.
+        // (We would skip B frames if more than 1/2 frame late, but they're safe).
+        if ( m_itrLate > itrFrame ) {
+
+            // Don't skip unless the anticipated key frame would be no more than
+            // 1 frame early.  If the renderer has not been waiting (we *guess*
+            // it hasn't because we're late) then it will allow frames to be
+            // played early by up to a frame.
+
+            // Let T = Stream time from now to anticipated next key frame
+            // = (frame duration) * (KeyFramePeriod - FramesSinceKeyFrame)
+            // So we skip if T - Late < one frame  i.e.
+            //   (duration) * (freq - FramesSince) - Late < duration
+            // or (duration) * (freq - FramesSince - 1) < Late
+
+            // We don't dare skip until we have seen some key frames and have
+            // some idea how often they occur and they are reasonably frequent.
+            if (m_nKeyFramePeriod>0) {
+                // It would be crazy - but we could have a stream with key frames
+                // a very long way apart - and if they are further than about
+                // 3.5 minutes apart then we could get arithmetic overflow in
+                // reference time units.  Therefore we switch to mSec at this point
+                int it = (itrFrame/10000)
+                         * (m_nKeyFramePeriod-m_nFramesSinceKeyFrame -  1);
+                MSR_INTEGER(m_idTimeTillKey, it);
+
+                // For debug - might want to see the details - dump them as scratch pad
+#ifdef VTRANSPERF
+                MSR_INTEGER(0, itrFrame);
+                MSR_INTEGER(0, m_nFramesSinceKeyFrame);
+                MSR_INTEGER(0, m_nKeyFramePeriod);
+#endif
+                if (m_itrLate/10000 > it) {
+                    m_bSkipping = TRUE;
+                    // Now we are committed.  Once we start skipping, we
+                    // cannot stop until we hit a key frame.
+                } else {
+#ifdef VTRANSPERF
+                    MSR_INTEGER(0, 777770);  // not near enough to next key
+#endif
+                }
+            } else {
+#ifdef VTRANSPERF
+                MSR_INTEGER(0, 777771);  // Next key not predictable
+#endif
+            }
+        } else {
+#ifdef VTRANSPERF
+            MSR_INTEGER(0, 777772);  // Less than one frame late
+            MSR_INTEGER(0, m_itrLate);
+            MSR_INTEGER(0, itrFrame);
+#endif
+        }
+    } else {
+#ifdef VTRANSPERF
+        MSR_INTEGER(0, 777773);  // Decode time short - not not worth skipping
+        MSR_INTEGER(0, m_itrAvgDecode);
+        MSR_INTEGER(0, itrFrame);
+#endif
+    }
+
+    ++m_nFramesSinceKeyFrame;
+
+    if (m_bSkipping) {
+        // We will count down the lateness as we skip each frame.
+        // We re-assess each frame.  The key frame might not arrive when expected.
+        // We reset m_itrLate if we get a new Quality message, but actually that's
+        // not likely because we're not sending frames on to the Renderer.  In
+        // fact if we DID get another one it would mean that there's a long
+        // pipe between us and the renderer and we might need an altogether
+        // better strategy to avoid hunting!
+        m_itrLate = m_itrLate - itrFrame;
+    }
+
+    MSR_INTEGER(m_idLate, (int)m_itrLate/10000 ); // Note how late we think we are
+    if (m_bSkipping) {
+        if (!m_bQualityChanged) {
+            m_bQualityChanged = TRUE;
+            NotifyEvent(EC_QUALITY_CHANGE,0,0);
+        }
+    }
+    return m_bSkipping;
+}
+
+
+HRESULT CVideoTransformFilter::AlterQuality(Quality q)
+{
+    // to reduce the amount of 64 bit arithmetic, m_itrLate is an int.
+    // +, -, >, == etc  are not too bad, but * and / are painful.
+    if (m_itrLate>300000000) {
+        // Avoid overflow and silliness - more than 30 secs late is already silly
+        m_itrLate = 300000000;
+    } else {
+        m_itrLate = (int)q.Late;
+    }
+    // We ignore the other fields
+
+    // We're actually not very good at handling this.  In non-direct draw mode
+    // most of the time can be spent in the renderer which can skip any frame.
+    // In that case we'd rather the renderer handled things.
+    // Nevertheless we will keep an eye on it and if we really start getting
+    // a very long way behind then we will actually skip - but we'll still tell
+    // the renderer (or whoever is downstream) that they should handle quality.
+
+    return E_FAIL;     // Tell the renderer to do his thing.
+
+}
+
+
+
+// This will avoid several hundred useless warnings if compiled -W4 by MS VC++ v4
+#pragma warning(disable:4514)
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/vtrans.h

@@ -0,0 +1,143 @@
+//------------------------------------------------------------------------------
+// File: VTrans.h
+//
+// Desc: DirectShow base classes - defines a video transform class.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+// This class is derived from CTransformFilter, but is specialised to handle
+// the requirements of video quality control by frame dropping.
+// This is a non-in-place transform, (i.e. it copies the data) such as a decoder.
+
+class CVideoTransformFilter : public CTransformFilter
+{
+  public:
+
+    CVideoTransformFilter(__in_opt LPCTSTR, __inout_opt LPUNKNOWN, REFCLSID clsid);
+    ~CVideoTransformFilter();
+    HRESULT EndFlush();
+
+    // =================================================================
+    // ----- override these bits ---------------------------------------
+    // =================================================================
+    // The following methods are in CTransformFilter which is inherited.
+    // They are mentioned here for completeness
+    //
+    // These MUST be supplied in a derived class
+    //
+    // NOTE:
+    // virtual HRESULT Transform(IMediaSample * pIn, IMediaSample *pOut);
+    // virtual HRESULT CheckInputType(const CMediaType* mtIn) PURE;
+    // virtual HRESULT CheckTransform
+    //     (const CMediaType* mtIn, const CMediaType* mtOut) PURE;
+    // static CCOMObject * CreateInstance(LPUNKNOWN, HRESULT *);
+    // virtual HRESULT DecideBufferSize
+    //     (IMemAllocator * pAllocator, ALLOCATOR_PROPERTIES *pprop) PURE;
+    // virtual HRESULT GetMediaType(int iPosition, CMediaType *pMediaType) PURE;
+    //
+    // These MAY also be overridden
+    //
+    // virtual HRESULT StopStreaming();
+    // virtual HRESULT SetMediaType(PIN_DIRECTION direction,const CMediaType *pmt);
+    // virtual HRESULT CheckConnect(PIN_DIRECTION dir,IPin *pPin);
+    // virtual HRESULT BreakConnect(PIN_DIRECTION dir);
+    // virtual HRESULT CompleteConnect(PIN_DIRECTION direction,IPin *pReceivePin);
+    // virtual HRESULT EndOfStream(void);
+    // virtual HRESULT BeginFlush(void);
+    // virtual HRESULT EndFlush(void);
+    // virtual HRESULT NewSegment
+    //     (REFERENCE_TIME tStart,REFERENCE_TIME tStop,double dRate);
+#ifdef PERF
+
+    // If you override this - ensure that you register all these ids
+    // as well as any of your own,
+    virtual void RegisterPerfId() {
+        m_idSkip        = MSR_REGISTER(TEXT("Video Transform Skip frame"));
+        m_idFrameType   = MSR_REGISTER(TEXT("Video transform frame type"));
+        m_idLate        = MSR_REGISTER(TEXT("Video Transform Lateness"));
+        m_idTimeTillKey = MSR_REGISTER(TEXT("Video Transform Estd. time to next key"));
+        CTransformFilter::RegisterPerfId();
+    }
+#endif
+
+  protected:
+
+    // =========== QUALITY MANAGEMENT IMPLEMENTATION ========================
+    // Frames are assumed to come in three types:
+    // Type 1: an AVI key frame or an MPEG I frame.
+    //        This frame can be decoded with no history.
+    //        Dropping this frame means that no further frame can be decoded
+    //        until the next type 1 frame.
+    //        Type 1 frames are sync points.
+    // Type 2: an AVI non-key frame or an MPEG P frame.
+    //        This frame cannot be decoded unless the previous type 1 frame was
+    //        decoded and all type 2 frames since have been decoded.
+    //        Dropping this frame means that no further frame can be decoded
+    //        until the next type 1 frame.
+    // Type 3: An MPEG B frame.
+    //        This frame cannot be decoded unless the previous type 1 or 2 frame
+    //        has been decoded AND the subsequent type 1 or 2 frame has also
+    //        been decoded.  (This requires decoding the frames out of sequence).
+    //        Dropping this frame affects no other frames.  This implementation
+    //        does not allow for these.  All non-sync-point frames are treated
+    //        as being type 2.
+    //
+    // The spacing of frames of type 1 in a file is not guaranteed.  There MUST
+    // be a type 1 frame at (well, near) the start of the file in order to start
+    // decoding at all.  After that there could be one every half second or so,
+    // there could be one at the start of each scene (aka "cut", "shot") or
+    // there could be no more at all.
+    // If there is only a single type 1 frame then NO FRAMES CAN BE DROPPED
+    // without losing all the rest of the movie.  There is no way to tell whether
+    // this is the case, so we find that we are in the gambling business.
+    // To try to improve the odds, we record the greatest interval between type 1s
+    // that we have seen and we bet on things being no worse than this in the
+    // future.
+
+    // You can tell if it's a type 1 frame by calling IsSyncPoint().
+    // there is no architected way to test for a type 3, so you should override
+    // the quality management here if you have B-frames.
+
+    int m_nKeyFramePeriod; // the largest observed interval between type 1 frames
+                           // 1 means every frame is type 1, 2 means every other.
+
+    int m_nFramesSinceKeyFrame; // Used to count frames since the last type 1.
+                                // becomes the new m_nKeyFramePeriod if greater.
+
+    BOOL m_bSkipping;           // we are skipping to the next type 1 frame
+
+#ifdef PERF
+    int m_idFrameType;          // MSR id Frame type.  1=Key, 2="non-key"
+    int m_idSkip;               // MSR id skipping
+    int m_idLate;               // MSR id lateness
+    int m_idTimeTillKey;        // MSR id for guessed time till next key frame.
+#endif
+
+    virtual HRESULT StartStreaming();
+
+    HRESULT AbortPlayback(HRESULT hr);	// if something bad happens
+
+    HRESULT Receive(IMediaSample *pSample);
+
+    HRESULT AlterQuality(Quality q);
+
+    BOOL ShouldSkipFrame(IMediaSample * pIn);
+
+    int m_itrLate;              // lateness from last Quality message
+                                // (this overflows at 214 secs late).
+    int m_tDecodeStart;         // timeGetTime when decode started.
+    int m_itrAvgDecode;         // Average decode time in reference units.
+
+    BOOL m_bNoSkip;             // debug - no skipping.
+
+    // We send an EC_QUALITY_CHANGE notification to the app if we have to degrade.
+    // We send one when we start degrading, not one for every frame, this means
+    // we track whether we've sent one yet.
+    BOOL m_bQualityChanged;
+
+    // When non-zero, don't pass anything to renderer until next keyframe
+    // If there are few keys, give up and eventually draw something
+    int m_nWaitForKey;
+};

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/winctrl.h

@@ -0,0 +1,224 @@
+//------------------------------------------------------------------------------
+// File: WinCtrl.h
+//
+// Desc: DirectShow base classes - defines classes for video control 
+//       interfaces.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __WINCTRL__
+#define __WINCTRL__
+
+#define ABSOL(x) (x < 0 ? -x : x)
+#define NEGAT(x) (x > 0 ? -x : x)
+
+//  Helper
+BOOL WINAPI PossiblyEatMessage(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
+
+class CBaseControlWindow : public CBaseVideoWindow, public CBaseWindow
+{
+protected:
+
+    CBaseFilter *m_pFilter;            // Pointer to owning media filter
+    CBasePin *m_pPin;                  // Controls media types for connection
+    CCritSec *m_pInterfaceLock;        // Externally defined critical section
+    COLORREF m_BorderColour;           // Current window border colour
+    BOOL m_bAutoShow;                  // What happens when the state changes
+    HWND m_hwndOwner;                  // Owner window that we optionally have
+    HWND m_hwndDrain;                  // HWND to post any messages received
+    BOOL m_bCursorHidden;              // Should we hide the window cursor
+
+public:
+
+    // Internal methods for other objects to get information out
+
+    HRESULT DoSetWindowStyle(long Style,long WindowLong);
+    HRESULT DoGetWindowStyle(__out long *pStyle,long WindowLong);
+    BOOL IsAutoShowEnabled() { return m_bAutoShow; };
+    COLORREF GetBorderColour() { return m_BorderColour; };
+    HWND GetOwnerWindow() { return m_hwndOwner; };
+    BOOL IsCursorHidden() { return m_bCursorHidden; };
+
+    inline BOOL PossiblyEatMessage(UINT uMsg, WPARAM wParam, LPARAM lParam)
+    {
+        return ::PossiblyEatMessage(m_hwndDrain, uMsg, wParam, lParam);
+    }
+
+    // Derived classes must call this to set the pin the filter is using
+    // We don't have the pin passed in to the constructor (as we do with
+    // the CBaseFilter object) because filters typically create the
+    // pins dynamically when requested in CBaseFilter::GetPin. This can
+    // not be called from our constructor because is is a virtual method
+
+    void SetControlWindowPin(CBasePin *pPin) {
+        m_pPin = pPin;
+    }
+
+public:
+
+    CBaseControlWindow(__inout CBaseFilter *pFilter,   // Owning media filter
+                       __in CCritSec *pInterfaceLock,  // Locking object
+                       __in_opt LPCTSTR pName,         // Object description
+                       __inout_opt LPUNKNOWN pUnk,     // Normal COM ownership
+                       __inout HRESULT *phr);          // OLE return code
+
+    // These are the properties we support
+
+    STDMETHODIMP put_Caption(__in BSTR strCaption);
+    STDMETHODIMP get_Caption(__out BSTR *pstrCaption);
+    STDMETHODIMP put_AutoShow(long AutoShow);
+    STDMETHODIMP get_AutoShow(__out long *AutoShow);
+    STDMETHODIMP put_WindowStyle(long WindowStyle);
+    STDMETHODIMP get_WindowStyle(__out long *pWindowStyle);
+    STDMETHODIMP put_WindowStyleEx(long WindowStyleEx);
+    STDMETHODIMP get_WindowStyleEx(__out long *pWindowStyleEx);
+    STDMETHODIMP put_WindowState(long WindowState);
+    STDMETHODIMP get_WindowState(__out long *pWindowState);
+    STDMETHODIMP put_BackgroundPalette(long BackgroundPalette);
+    STDMETHODIMP get_BackgroundPalette(__out long *pBackgroundPalette);
+    STDMETHODIMP put_Visible(long Visible);
+    STDMETHODIMP get_Visible(__out long *pVisible);
+    STDMETHODIMP put_Left(long Left);
+    STDMETHODIMP get_Left(__out long *pLeft);
+    STDMETHODIMP put_Width(long Width);
+    STDMETHODIMP get_Width(__out long *pWidth);
+    STDMETHODIMP put_Top(long Top);
+    STDMETHODIMP get_Top(__out long *pTop);
+    STDMETHODIMP put_Height(long Height);
+    STDMETHODIMP get_Height(__out long *pHeight);
+    STDMETHODIMP put_Owner(OAHWND Owner);
+    STDMETHODIMP get_Owner(__out OAHWND *Owner);
+    STDMETHODIMP put_MessageDrain(OAHWND Drain);
+    STDMETHODIMP get_MessageDrain(__out OAHWND *Drain);
+    STDMETHODIMP get_BorderColor(__out long *Color);
+    STDMETHODIMP put_BorderColor(long Color);
+    STDMETHODIMP get_FullScreenMode(__out long *FullScreenMode);
+    STDMETHODIMP put_FullScreenMode(long FullScreenMode);
+
+    // And these are the methods
+
+    STDMETHODIMP SetWindowForeground(long Focus);
+    STDMETHODIMP NotifyOwnerMessage(OAHWND hwnd,long uMsg,LONG_PTR wParam,LONG_PTR lParam);
+    STDMETHODIMP GetMinIdealImageSize(__out long *pWidth,__out long *pHeight);
+    STDMETHODIMP GetMaxIdealImageSize(__out long *pWidth,__out long *pHeight);
+    STDMETHODIMP SetWindowPosition(long Left,long Top,long Width,long Height);
+    STDMETHODIMP GetWindowPosition(__out long *pLeft,__out long *pTop,__out long *pWidth,__out long *pHeight);
+    STDMETHODIMP GetRestorePosition(__out long *pLeft,__out long *pTop,__out long *pWidth,__out long *pHeight);
+	STDMETHODIMP HideCursor(long HideCursor);
+    STDMETHODIMP IsCursorHidden(__out long *CursorHidden);
+};
+
+// This class implements the IBasicVideo interface
+
+class CBaseControlVideo : public CBaseBasicVideo
+{
+protected:
+
+    CBaseFilter *m_pFilter;   // Pointer to owning media filter
+    CBasePin *m_pPin;                   // Controls media types for connection
+    CCritSec *m_pInterfaceLock;         // Externally defined critical section
+
+public:
+
+    // Derived classes must provide these for the implementation
+
+    virtual HRESULT IsDefaultTargetRect() PURE;
+    virtual HRESULT SetDefaultTargetRect() PURE;
+    virtual HRESULT SetTargetRect(RECT *pTargetRect) PURE;
+    virtual HRESULT GetTargetRect(RECT *pTargetRect) PURE;
+    virtual HRESULT IsDefaultSourceRect() PURE;
+    virtual HRESULT SetDefaultSourceRect() PURE;
+    virtual HRESULT SetSourceRect(RECT *pSourceRect) PURE;
+    virtual HRESULT GetSourceRect(RECT *pSourceRect) PURE;
+    virtual HRESULT GetStaticImage(__inout long *pBufferSize,__out_bcount_part(*pBufferSize, *pBufferSize) long *pDIBImage) PURE;
+
+    // Derived classes must override this to return a VIDEOINFO representing
+    // the video format. We cannot call IPin ConnectionMediaType to get this
+    // format because various filters dynamically change the type when using
+    // DirectDraw such that the format shows the position of the logical
+    // bitmap in a frame buffer surface, so the size might be returned as
+    // 1024x768 pixels instead of 320x240 which is the real video dimensions
+
+    __out virtual VIDEOINFOHEADER *GetVideoFormat() PURE;
+
+    // Helper functions for creating memory renderings of a DIB image
+
+    HRESULT GetImageSize(__in VIDEOINFOHEADER *pVideoInfo,
+                         __out LONG *pBufferSize,
+                         __in RECT *pSourceRect);
+
+    HRESULT CopyImage(IMediaSample *pMediaSample,
+                      __in VIDEOINFOHEADER *pVideoInfo,
+                      __inout LONG *pBufferSize,
+                      __out_bcount_part(*pBufferSize, *pBufferSize) BYTE *pVideoImage,
+                      __in RECT *pSourceRect);
+
+    // Override this if you want notifying when the rectangles change
+    virtual HRESULT OnUpdateRectangles() { return NOERROR; };
+    virtual HRESULT OnVideoSizeChange();
+
+    // Derived classes must call this to set the pin the filter is using
+    // We don't have the pin passed in to the constructor (as we do with
+    // the CBaseFilter object) because filters typically create the
+    // pins dynamically when requested in CBaseFilter::GetPin. This can
+    // not be called from our constructor because is is a virtual method
+
+    void SetControlVideoPin(__inout CBasePin *pPin) {
+        m_pPin = pPin;
+    }
+
+    // Helper methods for checking rectangles
+    virtual HRESULT CheckSourceRect(__in RECT *pSourceRect);
+    virtual HRESULT CheckTargetRect(__in RECT *pTargetRect);
+
+public:
+
+    CBaseControlVideo(__inout CBaseFilter *pFilter,    // Owning media filter
+                      __in CCritSec *pInterfaceLock,   // Serialise interface
+                      __in_opt LPCTSTR pName,          // Object description
+                      __inout_opt LPUNKNOWN pUnk,      // Normal COM ownership
+                      __inout HRESULT *phr);           // OLE return code
+
+    // These are the properties we support
+
+    STDMETHODIMP get_AvgTimePerFrame(__out REFTIME *pAvgTimePerFrame);
+    STDMETHODIMP get_BitRate(__out long *pBitRate);
+    STDMETHODIMP get_BitErrorRate(__out long *pBitErrorRate);
+    STDMETHODIMP get_VideoWidth(__out long *pVideoWidth);
+    STDMETHODIMP get_VideoHeight(__out long *pVideoHeight);
+    STDMETHODIMP put_SourceLeft(long SourceLeft);
+    STDMETHODIMP get_SourceLeft(__out long *pSourceLeft);
+    STDMETHODIMP put_SourceWidth(long SourceWidth);
+    STDMETHODIMP get_SourceWidth(__out long *pSourceWidth);
+    STDMETHODIMP put_SourceTop(long SourceTop);
+    STDMETHODIMP get_SourceTop(__out long *pSourceTop);
+    STDMETHODIMP put_SourceHeight(long SourceHeight);
+    STDMETHODIMP get_SourceHeight(__out long *pSourceHeight);
+    STDMETHODIMP put_DestinationLeft(long DestinationLeft);
+    STDMETHODIMP get_DestinationLeft(__out long *pDestinationLeft);
+    STDMETHODIMP put_DestinationWidth(long DestinationWidth);
+    STDMETHODIMP get_DestinationWidth(__out long *pDestinationWidth);
+    STDMETHODIMP put_DestinationTop(long DestinationTop);
+    STDMETHODIMP get_DestinationTop(__out long *pDestinationTop);
+    STDMETHODIMP put_DestinationHeight(long DestinationHeight);
+    STDMETHODIMP get_DestinationHeight(__out long *pDestinationHeight);
+
+    // And these are the methods
+
+    STDMETHODIMP GetVideoSize(__out long *pWidth,__out long *pHeight);
+    STDMETHODIMP SetSourcePosition(long Left,long Top,long Width,long Height);
+    STDMETHODIMP GetSourcePosition(__out long *pLeft,__out long *pTop,__out long *pWidth,__out long *pHeight);
+    STDMETHODIMP GetVideoPaletteEntries(long StartIndex,long Entries,__out long *pRetrieved,__out_ecount_part(Entries, *pRetrieved) long *pPalette);
+    STDMETHODIMP SetDefaultSourcePosition();
+    STDMETHODIMP IsUsingDefaultSource();
+    STDMETHODIMP SetDestinationPosition(long Left,long Top,long Width,long Height);
+    STDMETHODIMP GetDestinationPosition(__out long *pLeft,__out long *pTop,__out long *pWidth,__out long *pHeight);
+    STDMETHODIMP SetDefaultDestinationPosition();
+    STDMETHODIMP IsUsingDefaultDestination();
+    STDMETHODIMP GetCurrentImage(__inout long *pBufferSize,__out_bcount_part(*pBufferSize, *pBufferSize) long *pVideoImage);
+};
+
+#endif // __WINCTRL__
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/winutil.h

@@ -0,0 +1,419 @@
+//------------------------------------------------------------------------------
+// File: WinUtil.h
+//
+// Desc: DirectShow base classes - defines generic handler classes.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+// Make sure that you call PrepareWindow to initialise the window after
+// the object has been constructed. It is a separate method so that
+// derived classes can override useful methods like MessageLoop. Also
+// any derived class must call DoneWithWindow in its destructor. If it
+// doesn't a message may be retrieved and call a derived class member
+// function while a thread is executing the base class destructor code
+
+#ifndef __WINUTIL__
+#define __WINUTIL__
+
+const int DEFWIDTH = 320;                    // Initial window width
+const int DEFHEIGHT = 240;                   // Initial window height
+const int CAPTION = 256;                     // Maximum length of caption
+const int TIMELENGTH = 50;                   // Maximum length of times
+const int PROFILESTR = 128;                  // Normal profile string
+const WORD PALVERSION = 0x300;               // GDI palette version
+const LONG PALETTE_VERSION = (LONG) 1;       // Initial palette version
+const COLORREF VIDEO_COLOUR = 0;             // Defaults to black background
+const HANDLE hMEMORY = (HANDLE) (-1);        // Says to open as memory file
+
+#define WIDTH(x) ((*(x)).right - (*(x)).left)
+#define HEIGHT(x) ((*(x)).bottom - (*(x)).top)
+#define SHOWSTAGE TEXT("WM_SHOWSTAGE")
+#define SHOWSTAGETOP TEXT("WM_SHOWSTAGETOP")
+#define REALIZEPALETTE TEXT("WM_REALIZEPALETTE")
+
+class AM_NOVTABLE CBaseWindow
+{
+protected:
+
+    HINSTANCE m_hInstance;          // Global module instance handle
+    HWND m_hwnd;                    // Handle for our window
+    HDC m_hdc;                      // Device context for the window
+    LONG m_Width;                   // Client window width
+    LONG m_Height;                  // Client window height
+    BOOL m_bActivated;              // Has the window been activated
+    LPTSTR m_pClassName;            // Static string holding class name
+    DWORD m_ClassStyles;            // Passed in to our constructor
+    DWORD m_WindowStyles;           // Likewise the initial window styles
+    DWORD m_WindowStylesEx;         // And the extended window styles
+    UINT m_ShowStageMessage;        // Have the window shown with focus
+    UINT m_ShowStageTop;            // Makes the window WS_EX_TOPMOST
+    UINT m_RealizePalette;          // Makes us realize our new palette
+    HDC m_MemoryDC;                 // Used for fast BitBlt operations
+    HPALETTE m_hPalette;            // Handle to any palette we may have
+    BYTE m_bNoRealize;              // Don't realize palette now
+    BYTE m_bBackground;             // Should we realise in background
+    BYTE m_bRealizing;              // already realizing the palette
+    CCritSec m_WindowLock;          // Serialise window object access
+    BOOL m_bDoGetDC;                // Should this window get a DC
+    bool m_bDoPostToDestroy;        // Use PostMessage to destroy
+    CCritSec m_PaletteLock;         // This lock protects m_hPalette.
+                                    // It should be held anytime the
+                                    // program use the value of m_hPalette.
+
+    // Maps windows message procedure into C++ methods
+    friend LRESULT CALLBACK WndProc(HWND hwnd,      // Window handle
+                                    UINT uMsg,      // Message ID
+                                    WPARAM wParam,  // First parameter
+                                    LPARAM lParam); // Other parameter
+
+    virtual LRESULT OnPaletteChange(HWND hwnd, UINT Message);
+
+public:
+
+    CBaseWindow(BOOL bDoGetDC = TRUE, bool bPostToDestroy = false);
+
+#ifdef DEBUG
+    virtual ~CBaseWindow();
+#endif
+
+    virtual HRESULT DoneWithWindow();
+    virtual HRESULT PrepareWindow();
+    virtual HRESULT InactivateWindow();
+    virtual HRESULT ActivateWindow();
+    virtual BOOL OnSize(LONG Width, LONG Height);
+    virtual BOOL OnClose();
+    virtual RECT GetDefaultRect();
+    virtual HRESULT UninitialiseWindow();
+    virtual HRESULT InitialiseWindow(HWND hwnd);
+
+    HRESULT CompleteConnect();
+    HRESULT DoCreateWindow();
+
+    HRESULT PerformanceAlignWindow();
+    HRESULT DoShowWindow(LONG ShowCmd);
+    void PaintWindow(BOOL bErase);
+    void DoSetWindowForeground(BOOL bFocus);
+    virtual HRESULT SetPalette(HPALETTE hPalette);
+    void SetRealize(BOOL bRealize)
+    {
+        m_bNoRealize = !bRealize;
+    }
+
+    //  Jump over to the window thread to set the current palette
+    HRESULT SetPalette();
+    void UnsetPalette(void);
+    virtual HRESULT DoRealisePalette(BOOL bForceBackground = FALSE);
+
+    void LockPaletteLock();
+    void UnlockPaletteLock();
+
+    virtual BOOL PossiblyEatMessage(UINT uMsg, WPARAM wParam, LPARAM lParam)
+	    { return FALSE; };
+
+    // Access our window information
+
+    bool WindowExists();
+    LONG GetWindowWidth();
+    LONG GetWindowHeight();
+    HWND GetWindowHWND();
+    HDC GetMemoryHDC();
+    HDC GetWindowHDC();
+
+    #ifdef DEBUG
+    HPALETTE GetPalette();
+    #endif // DEBUG
+
+    // This is the window procedure the derived object should override
+
+    virtual LRESULT OnReceiveMessage(HWND hwnd,          // Window handle
+                                     UINT uMsg,          // Message ID
+                                     WPARAM wParam,      // First parameter
+                                     LPARAM lParam);     // Other parameter
+
+    // Must be overriden to return class and window styles
+
+    virtual LPTSTR GetClassWindowStyles(
+                            __out DWORD *pClassStyles,          // Class styles
+                            __out DWORD *pWindowStyles,         // Window styles
+                            __out DWORD *pWindowStylesEx) PURE; // Extended styles
+};
+
+
+// This helper class is entirely subservient to the owning CBaseWindow object
+// All this object does is to split out the actual drawing operation from the
+// main object (because it was becoming too large). We have a number of entry
+// points to set things like the draw device contexts, to implement the actual
+// drawing and to set the destination rectangle in the client window. We have
+// no critical section locking in this class because we are used exclusively
+// by the owning window object which looks after serialising calls into us
+
+// If you want to use this class make sure you call NotifyAllocator once the
+// allocate has been agreed, also call NotifyMediaType with a pointer to a
+// NON stack based CMediaType once that has been set (we keep a pointer to
+// the original rather than taking a copy). When the palette changes call
+// IncrementPaletteVersion (easiest thing to do is to also call this method
+// in the SetMediaType method most filters implement). Finally before you
+// start rendering anything call SetDrawContext so that we can get the HDCs
+// for drawing from the CBaseWindow object we are given during construction
+
+class CDrawImage
+{
+protected:
+
+    CBaseWindow *m_pBaseWindow;     // Owning video window object
+    CRefTime m_StartSample;         // Start time for the current sample
+    CRefTime m_EndSample;           // And likewise it's end sample time
+    HDC m_hdc;                      // Main window device context
+    HDC m_MemoryDC;                 // Offscreen draw device context
+    RECT m_TargetRect;              // Target destination rectangle
+    RECT m_SourceRect;              // Source image rectangle
+    BOOL m_bStretch;                // Do we have to stretch the images
+    BOOL m_bUsingImageAllocator;    // Are the samples shared DIBSECTIONs
+    CMediaType *m_pMediaType;       // Pointer to the current format
+    int m_perfidRenderTime;         // Time taken to render an image
+    LONG m_PaletteVersion;          // Current palette version cookie
+
+    // Draw the video images in the window
+
+    void SlowRender(IMediaSample *pMediaSample);
+    void FastRender(IMediaSample *pMediaSample);
+    void DisplaySampleTimes(IMediaSample *pSample);
+    void UpdateColourTable(HDC hdc,__in BITMAPINFOHEADER *pbmi);
+    void SetStretchMode();
+
+public:
+
+    // Used to control the image drawing
+
+    CDrawImage(__inout CBaseWindow *pBaseWindow);
+    BOOL DrawImage(IMediaSample *pMediaSample);
+    BOOL DrawVideoImageHere(HDC hdc, IMediaSample *pMediaSample,
+                            __in LPRECT lprcSrc, __in LPRECT lprcDst);
+    void SetDrawContext();
+    void SetTargetRect(__in RECT *pTargetRect);
+    void SetSourceRect(__in RECT *pSourceRect);
+    void GetTargetRect(__out RECT *pTargetRect);
+    void GetSourceRect(__out RECT *pSourceRect);
+    virtual RECT ScaleSourceRect(const RECT *pSource);
+
+    // Handle updating palettes as they change
+
+    LONG GetPaletteVersion();
+    void ResetPaletteVersion();
+    void IncrementPaletteVersion();
+
+    // Tell us media types and allocator assignments
+
+    void NotifyAllocator(BOOL bUsingImageAllocator);
+    void NotifyMediaType(__in CMediaType *pMediaType);
+    BOOL UsingImageAllocator();
+
+    // Called when we are about to draw an image
+
+    void NotifyStartDraw() {
+        MSR_START(m_perfidRenderTime);
+    };
+
+    // Called when we complete an image rendering
+
+    void NotifyEndDraw() {
+        MSR_STOP(m_perfidRenderTime);
+    };
+};
+
+
+// This is the structure used to keep information about each GDI DIB. All the
+// samples we create from our allocator will have a DIBSECTION allocated to
+// them. When we receive the sample we know we can BitBlt straight to an HDC
+
+typedef struct tagDIBDATA {
+
+    LONG        PaletteVersion;     // Current palette version in use
+    DIBSECTION  DibSection;         // Details of DIB section allocated
+    HBITMAP     hBitmap;            // Handle to bitmap for drawing
+    HANDLE      hMapping;           // Handle to shared memory block
+    BYTE        *pBase;             // Pointer to base memory address
+
+} DIBDATA;
+
+
+// This class inherits from CMediaSample and uses all of it's methods but it
+// overrides the constructor to initialise itself with the DIBDATA structure
+// When we come to render an IMediaSample we will know if we are using our own
+// allocator, and if we are, we can cast the IMediaSample to a pointer to one
+// of these are retrieve the DIB section information and hence the HBITMAP
+
+class CImageSample : public CMediaSample
+{
+protected:
+
+    DIBDATA m_DibData;      // Information about the DIBSECTION
+    BOOL m_bInit;           // Is the DIB information setup
+
+public:
+
+    // Constructor
+
+    CImageSample(__inout CBaseAllocator *pAllocator,
+                 __in_opt LPCTSTR pName,
+                 __inout HRESULT *phr,
+                 __in_bcount(length) LPBYTE pBuffer,
+                 LONG length);
+
+    // Maintain the DIB/DirectDraw state
+
+    void SetDIBData(__in DIBDATA *pDibData);
+    __out DIBDATA *GetDIBData();
+};
+
+
+// This is an allocator based on the abstract CBaseAllocator base class that
+// allocates sample buffers in shared memory. The number and size of these
+// are determined when the output pin calls Prepare on us. The shared memory
+// blocks are used in subsequent calls to GDI CreateDIBSection, once that
+// has been done the output pin can fill the buffers with data which will
+// then be handed to GDI through BitBlt calls and thereby remove one copy
+
+class CImageAllocator : public CBaseAllocator
+{
+protected:
+
+    CBaseFilter *m_pFilter;   // Delegate reference counts to
+    CMediaType *m_pMediaType;           // Pointer to the current format
+
+    // Used to create and delete samples
+
+    HRESULT Alloc();
+    void Free();
+
+    // Manage the shared DIBSECTION and DCI/DirectDraw buffers
+
+    HRESULT CreateDIB(LONG InSize,DIBDATA &DibData);
+    STDMETHODIMP CheckSizes(__in ALLOCATOR_PROPERTIES *pRequest);
+    virtual CImageSample *CreateImageSample(__in_bcount(Length) LPBYTE pData,LONG Length);
+
+public:
+
+    // Constructor and destructor
+
+    CImageAllocator(__inout CBaseFilter *pFilter,__in_opt LPCTSTR pName,__inout HRESULT *phr);
+#ifdef DEBUG
+    ~CImageAllocator();
+#endif
+
+    STDMETHODIMP_(ULONG) NonDelegatingAddRef();
+    STDMETHODIMP_(ULONG) NonDelegatingRelease();
+    void NotifyMediaType(__in CMediaType *pMediaType);
+
+    // Agree the number of buffers to be used and their size
+
+    STDMETHODIMP SetProperties(
+        __in ALLOCATOR_PROPERTIES *pRequest,
+        __out ALLOCATOR_PROPERTIES *pActual);
+};
+
+
+// This class is a fairly specialised helper class for image renderers that
+// have to create and manage palettes. The CBaseWindow class looks after
+// realising palettes once they have been installed. This class can be used
+// to create the palette handles from a media format (which must contain a
+// VIDEOINFO structure in the format block). We try to make the palette an
+// identity palette to maximise performance and also only change palettes
+// if actually required to (we compare palette colours before updating).
+// All the methods are virtual so that they can be overriden if so required
+
+class CImagePalette
+{
+protected:
+
+    CBaseWindow *m_pBaseWindow;             // Window to realise palette in
+    CBaseFilter *m_pFilter;                 // Media filter to send events
+    CDrawImage *m_pDrawImage;               // Object who will be drawing
+    HPALETTE m_hPalette;                    // The palette handle we own
+
+public:
+
+    CImagePalette(__inout CBaseFilter *pBaseFilter,
+                  __inout CBaseWindow *pBaseWindow,
+                  __inout CDrawImage *pDrawImage);
+
+#ifdef DEBUG
+    virtual ~CImagePalette();
+#endif
+
+    static HPALETTE MakePalette(const VIDEOINFOHEADER *pVideoInfo, __in LPSTR szDevice);
+    HRESULT RemovePalette();
+    static HRESULT MakeIdentityPalette(__inout_ecount_full(iColours) PALETTEENTRY *pEntry,INT iColours, __in LPSTR szDevice);
+    HRESULT CopyPalette(const CMediaType *pSrc,__out CMediaType *pDest);
+    BOOL ShouldUpdate(const VIDEOINFOHEADER *pNewInfo,const VIDEOINFOHEADER *pOldInfo);
+    HRESULT PreparePalette(const CMediaType *pmtNew,const CMediaType *pmtOld,__in LPSTR szDevice);
+
+    BOOL DrawVideoImageHere(HDC hdc, IMediaSample *pMediaSample, __in LPRECT lprcSrc, __in LPRECT lprcDst)
+    {
+        return m_pDrawImage->DrawVideoImageHere(hdc, pMediaSample, lprcSrc,lprcDst);
+    }
+};
+
+
+// Another helper class really for video based renderers. Most such renderers
+// need to know what the display format is to some degree or another. This
+// class initialises itself with the display format. The format can be asked
+// for through GetDisplayFormat and various other accessor functions. If a
+// filter detects a display format change (perhaps it gets a WM_DEVMODECHANGE
+// message then it can call RefreshDisplayType to reset that format). Also
+// many video renderers will want to check formats as they are proposed by
+// source filters. This class provides methods to check formats and only
+// accept those video formats that can be efficiently drawn using GDI calls
+
+class CImageDisplay : public CCritSec
+{
+protected:
+
+    // This holds the display format; biSize should not be too big, so we can
+    // safely use the VIDEOINFO structure
+    VIDEOINFO m_Display;
+
+    static DWORD CountSetBits(const DWORD Field);
+    static DWORD CountPrefixBits(const DWORD Field);
+    static BOOL CheckBitFields(const VIDEOINFO *pInput);
+
+public:
+
+    // Constructor and destructor
+
+    CImageDisplay();
+
+    // Used to manage BITMAPINFOHEADERs and the display format
+
+    const VIDEOINFO *GetDisplayFormat();
+    HRESULT RefreshDisplayType(__in_opt LPSTR szDeviceName);
+    static BOOL CheckHeaderValidity(const VIDEOINFO *pInput);
+    static BOOL CheckPaletteHeader(const VIDEOINFO *pInput);
+    BOOL IsPalettised();
+    WORD GetDisplayDepth();
+
+    // Provide simple video format type checking
+
+    HRESULT CheckMediaType(const CMediaType *pmtIn);
+    HRESULT CheckVideoType(const VIDEOINFO *pInput);
+    HRESULT UpdateFormat(__inout VIDEOINFO *pVideoInfo);
+    const DWORD *GetBitMasks(const VIDEOINFO *pVideoInfo);
+
+    BOOL GetColourMask(__out DWORD *pMaskRed,
+                       __out DWORD *pMaskGreen,
+                       __out DWORD *pMaskBlue);
+};
+
+//  Convert a FORMAT_VideoInfo to FORMAT_VideoInfo2
+STDAPI ConvertVideoInfoToVideoInfo2(__inout AM_MEDIA_TYPE *pmt);
+
+//  Check a media type containing VIDEOINFOHEADER
+STDAPI CheckVideoInfoType(const AM_MEDIA_TYPE *pmt);
+
+//  Check a media type containing VIDEOINFOHEADER
+STDAPI CheckVideoInfo2Type(const AM_MEDIA_TYPE *pmt);
+
+#endif // __WINUTIL__
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/wxdebug.h

@@ -0,0 +1,359 @@
+//------------------------------------------------------------------------------
+// File: WXDebug.h
+//
+// Desc: DirectShow base classes - provides debugging facilities.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __WXDEBUG__
+#define __WXDEBUG__
+
+// This library provides fairly straight forward debugging functionality, this
+// is split into two main sections. The first is assertion handling, there are
+// three types of assertions provided here. The most commonly used one is the
+// ASSERT(condition) macro which will pop up a message box including the file
+// and line number if the condition evaluates to FALSE. Then there is the
+// EXECUTE_ASSERT macro which is the same as ASSERT except the condition will
+// still be executed in NON debug builds. The final type of assertion is the
+// KASSERT macro which is more suitable for pure (perhaps kernel) filters as
+// the condition is printed onto the debugger rather than in a message box.
+//
+// The other part of the debug module facilties is general purpose logging.
+// This is accessed by calling DbgLog(). The function takes a type and level
+// field which define the type of informational string you are presenting and
+// it's relative importance. The type field can be a combination (one or more)
+// of LOG_TIMING, LOG_TRACE, LOG_MEMORY, LOG_LOCKING and LOG_ERROR. The level
+// is a DWORD value where zero defines highest important. Use of zero as the
+// debug logging level is to be encouraged ONLY for major errors or events as
+// they will ALWAYS be displayed on the debugger. Other debug output has it's
+// level matched against the current debug output level stored in the registry
+// for this module and if less than the current setting it will be displayed.
+//
+// Each module or executable has it's own debug output level for each of the
+// five types. These are read in when the DbgInitialise function is called
+// for DLLs linking to STRMBASE.LIB this is done automatically when the DLL
+// is loaded, executables must call it explicitely with the module instance
+// handle given to them through the WINMAIN entry point. An executable must
+// also call DbgTerminate when they have finished to clean up the resources
+// the debug library uses, once again this is done automatically for DLLs
+
+// These are the five different categories of logging information
+
+enum {  LOG_TIMING = 0x01,    // Timing and performance measurements
+        LOG_TRACE = 0x02,     // General step point call tracing
+        LOG_MEMORY =  0x04,   // Memory and object allocation/destruction
+        LOG_LOCKING = 0x08,   // Locking/unlocking of critical sections
+        LOG_ERROR = 0x10,     // Debug error notification
+        LOG_CUSTOM1 = 0x20,
+        LOG_CUSTOM2 = 0x40,
+        LOG_CUSTOM3 = 0x80,
+        LOG_CUSTOM4 = 0x100,
+        LOG_CUSTOM5 = 0x200,
+};
+
+#define LOG_FORCIBLY_SET 0x80000000
+
+enum {  CDISP_HEX = 0x01,
+        CDISP_DEC = 0x02};
+
+// For each object created derived from CBaseObject (in debug builds) we
+// create a descriptor that holds it's name (statically allocated memory)
+// and a cookie we assign it. We keep a list of all the active objects
+// we have registered so that we can dump a list of remaining objects
+
+typedef struct tag_ObjectDesc {
+    LPCSTR m_szName;
+    LPCWSTR m_wszName;
+    DWORD m_dwCookie;
+    tag_ObjectDesc *m_pNext;
+} ObjectDesc;
+
+#define DLLIMPORT __declspec(dllimport)
+#define DLLEXPORT __declspec(dllexport)
+
+#ifdef DEBUG
+
+    #define NAME(x) TEXT(x)
+
+    // These are used internally by the debug library (PRIVATE)
+
+    void WINAPI DbgInitKeyLevels(HKEY hKey, bool fTakeMax);
+    void WINAPI DbgInitGlobalSettings(bool fTakeMax);
+    void WINAPI DbgInitModuleSettings(bool fTakeMax);
+    void WINAPI DbgInitModuleName();
+    DWORD WINAPI DbgRegisterObjectCreation(
+        LPCSTR szObjectName, LPCWSTR wszObjectName);
+
+    BOOL WINAPI DbgRegisterObjectDestruction(DWORD dwCookie);
+
+    // These are the PUBLIC entry points
+
+    BOOL WINAPI DbgCheckModuleLevel(DWORD Type,DWORD Level);
+    void WINAPI DbgSetModuleLevel(DWORD Type,DWORD Level);
+    void WINAPI DbgSetAutoRefreshLevels(bool fAuto);
+
+    // Initialise the library with the module handle
+
+    void WINAPI DbgInitialise(HINSTANCE hInst);
+    void WINAPI DbgTerminate();
+
+    void WINAPI DbgDumpObjectRegister();
+
+    // Display error and logging to the user
+
+    void WINAPI DbgAssert(LPCTSTR pCondition,LPCTSTR pFileName,INT iLine);
+    void WINAPI DbgBreakPoint(LPCTSTR pCondition,LPCTSTR pFileName,INT iLine);
+    void WINAPI DbgBreakPoint(LPCTSTR pFileName,INT iLine,__format_string LPCTSTR  szFormatString,...);
+
+    void WINAPI DbgKernelAssert(LPCTSTR pCondition,LPCTSTR pFileName,INT iLine);
+    void WINAPI DbgLogInfo(DWORD Type,DWORD Level,__format_string LPCTSTR pFormat,...);
+#ifdef UNICODE
+    void WINAPI DbgLogInfo(DWORD Type,DWORD Level,__format_string LPCSTR pFormat,...);
+    void WINAPI DbgAssert(LPCSTR pCondition,LPCSTR pFileName,INT iLine);
+    void WINAPI DbgBreakPoint(LPCSTR pCondition,LPCSTR pFileName,INT iLine);
+    void WINAPI DbgKernelAssert(LPCSTR pCondition,LPCSTR pFileName,INT iLine);
+#endif
+    void WINAPI DbgOutString(LPCTSTR psz);
+
+    //  Debug infinite wait stuff
+    DWORD WINAPI DbgWaitForSingleObject(HANDLE h);
+    DWORD WINAPI DbgWaitForMultipleObjects(DWORD nCount,
+                                    __in_ecount(nCount) CONST HANDLE *lpHandles,
+                                    BOOL bWaitAll);
+    void WINAPI DbgSetWaitTimeout(DWORD dwTimeout);
+
+#ifdef __strmif_h__
+    // Display a media type: Terse at level 2, verbose at level 5
+    void WINAPI DisplayType(LPCTSTR label, const AM_MEDIA_TYPE *pmtIn);
+
+    // Dump lots of information about a filter graph
+    void WINAPI DumpGraph(IFilterGraph *pGraph, DWORD dwLevel);
+#endif
+
+    #define KASSERT(_x_) if (!(_x_))         \
+        DbgKernelAssert(TEXT(#_x_),TEXT(__FILE__),__LINE__)
+
+    //  Break on the debugger without putting up a message box
+    //  message goes to debugger instead
+
+    #define KDbgBreak(_x_)                   \
+        DbgKernelAssert(TEXT(#_x_),TEXT(__FILE__),__LINE__)
+
+    // We chose a common name for our ASSERT macro, MFC also uses this name
+    // So long as the implementation evaluates the condition and handles it
+    // then we will be ok. Rather than override the behaviour expected we
+    // will leave whatever first defines ASSERT as the handler (i.e. MFC)
+    #ifndef ASSERT
+        #define ASSERT(_x_) if (!(_x_))         \
+            DbgAssert(TEXT(#_x_),TEXT(__FILE__),__LINE__)
+    #endif
+
+    #define DbgAssertAligned( _ptr_, _alignment_ ) ASSERT( ((DWORD_PTR) (_ptr_)) % (_alignment_) == 0)
+
+    //  Put up a message box informing the user of a halt
+    //  condition in the program
+
+    #define DbgBreak(_x_)                   \
+        DbgBreakPoint(TEXT(#_x_),TEXT(__FILE__),__LINE__)
+
+    #define EXECUTE_ASSERT(_x_) ASSERT(_x_)
+    #define DbgLog(_x_) DbgLogInfo _x_
+    // MFC style trace macros
+
+    #define NOTE(_x_)             DbgLog((LOG_TRACE,5,TEXT(_x_)))
+    #define NOTE1(_x_,a)          DbgLog((LOG_TRACE,5,TEXT(_x_),a))
+    #define NOTE2(_x_,a,b)        DbgLog((LOG_TRACE,5,TEXT(_x_),a,b))
+    #define NOTE3(_x_,a,b,c)      DbgLog((LOG_TRACE,5,TEXT(_x_),a,b,c))
+    #define NOTE4(_x_,a,b,c,d)    DbgLog((LOG_TRACE,5,TEXT(_x_),a,b,c,d))
+    #define NOTE5(_x_,a,b,c,d,e)  DbgLog((LOG_TRACE,5,TEXT(_x_),a,b,c,d,e))
+
+#else
+
+    // Retail builds make public debug functions inert  - WARNING the source
+    // files do not define or build any of the entry points in debug builds
+    // (public entry points compile to nothing) so if you go trying to call
+    // any of the private entry points in your source they won't compile
+
+    #define NAME(_x_) ((LPTSTR) NULL)
+
+    #define DbgInitialise(hInst)
+    #define DbgTerminate()
+    #define DbgLog(_x_) 0
+    #define DbgOutString(psz)
+    #define DbgAssertAligned( _ptr_, _alignment_ ) 0
+
+    #define DbgRegisterObjectCreation(pObjectName)
+    #define DbgRegisterObjectDestruction(dwCookie)
+    #define DbgDumpObjectRegister()
+
+    #define DbgCheckModuleLevel(Type,Level)
+    #define DbgSetModuleLevel(Type,Level)
+    #define DbgSetAutoRefreshLevels(fAuto)
+
+    #define DbgWaitForSingleObject(h)  WaitForSingleObject(h, INFINITE)
+    #define DbgWaitForMultipleObjects(nCount, lpHandles, bWaitAll)     \
+               WaitForMultipleObjects(nCount, lpHandles, bWaitAll, INFINITE)
+    #define DbgSetWaitTimeout(dwTimeout)
+
+    #define KDbgBreak(_x_)
+    #define DbgBreak(_x_)
+
+    #define KASSERT(_x_) ((void)0)
+    #ifndef ASSERT
+	#define ASSERT(_x_) ((void)0)
+    #endif
+    #define EXECUTE_ASSERT(_x_) ((void)(_x_))
+
+    // MFC style trace macros
+
+    #define NOTE(_x_) ((void)0)
+    #define NOTE1(_x_,a) ((void)0)
+    #define NOTE2(_x_,a,b) ((void)0)
+    #define NOTE3(_x_,a,b,c) ((void)0)
+    #define NOTE4(_x_,a,b,c,d) ((void)0)
+    #define NOTE5(_x_,a,b,c,d,e) ((void)0)
+
+    #define DisplayType(label, pmtIn) ((void)0)
+    #define DumpGraph(pGraph, label) ((void)0)
+#endif
+
+
+// Checks a pointer which should be non NULL - can be used as follows.
+
+#define CheckPointer(p,ret) {if((p)==NULL) return (ret);}
+
+//   HRESULT Foo(VOID *pBar)
+//   {
+//       CheckPointer(pBar,E_INVALIDARG)
+//   }
+//
+//   Or if the function returns a boolean
+//
+//   BOOL Foo(VOID *pBar)
+//   {
+//       CheckPointer(pBar,FALSE)
+//   }
+
+#define ValidateReadPtr(p,cb) 0
+#define ValidateWritePtr(p,cb) 0
+#define ValidateReadWritePtr(p,cb) 0
+#define ValidateStringPtr(p) 0
+#define ValidateStringPtrA(p) 0
+#define ValidateStringPtrW(p) 0
+
+
+#ifdef _OBJBASE_H_
+
+    //  Outputting GUID names.  If you want to include the name
+    //  associated with a GUID (eg CLSID_...) then
+    //
+    //      GuidNames[yourGUID]
+    //
+    //  Returns the name defined in uuids.h as a string
+
+    typedef struct {
+        CHAR   *szName;
+        GUID    guid;
+    } GUID_STRING_ENTRY;
+
+    class CGuidNameList {
+    public:
+        CHAR *operator [] (const GUID& guid);
+    };
+
+    extern CGuidNameList GuidNames;
+
+#endif
+
+#ifndef REMIND
+    //  REMIND macro - generates warning as reminder to complete coding
+    //  (eg) usage:
+    //
+    //  #pragma message (REMIND("Add automation support"))
+
+
+    #define QUOTE(x) #x
+    #define QQUOTE(y) QUOTE(y)
+    #define REMIND(str) __FILE__ "(" QQUOTE(__LINE__) ") :  " str
+#endif
+
+//  Method to display objects in a useful format
+//
+//  eg If you want to display a LONGLONG ll in a debug string do (eg)
+//
+//  DbgLog((LOG_TRACE, n, TEXT("Value is %s"), (LPCTSTR)CDisp(ll, CDISP_HEX)));
+
+
+class CDispBasic
+{
+public:
+    CDispBasic() { m_pString = m_String; };
+    ~CDispBasic();
+protected:
+    PTCHAR m_pString;  // normally points to m_String... unless too much data
+    TCHAR m_String[50];
+};
+class CDisp : public CDispBasic
+{
+public:
+    CDisp(LONGLONG ll, int Format = CDISP_HEX); // Display a LONGLONG in CDISP_HEX or CDISP_DEC form
+    CDisp(REFCLSID clsid);      // Display a GUID
+    CDisp(double d);            // Display a floating point number
+#ifdef __strmif_h__
+#ifdef __STREAMS__
+    CDisp(CRefTime t);          // Display a Reference Time
+#endif
+    CDisp(IPin *pPin);          // Display a pin as {filter clsid}(pin name)
+    CDisp(IUnknown *pUnk);      // Display a filter or pin
+#endif // __strmif_h__
+    ~CDisp();
+
+    //  Implement cast to (LPCTSTR) as parameter to logger
+    operator LPCTSTR()
+    {
+        return (LPCTSTR)m_pString;
+    };
+};
+
+
+#if defined(DEBUG)
+class CAutoTrace
+{
+private:
+    LPCTSTR  _szBlkName;
+    const int _level;
+    static const TCHAR _szEntering[];
+    static const TCHAR _szLeaving[];
+public:
+    CAutoTrace(LPCTSTR szBlkName, const int level = 15)
+        : _szBlkName(szBlkName), _level(level)
+    {DbgLog((LOG_TRACE, _level, _szEntering, _szBlkName));}
+
+    ~CAutoTrace()
+    {DbgLog((LOG_TRACE, _level, _szLeaving, _szBlkName));}
+};
+
+#if defined (__FUNCTION__)
+
+#define AMTRACEFN()  CAutoTrace __trace(TEXT(__FUNCTION__))
+#define AMTRACE(_x_) CAutoTrace __trace(TEXT(__FUNCTION__))
+
+#else
+
+#define AMTRACE(_x_) CAutoTrace __trace _x_
+#define AMTRACEFN()
+
+#endif
+
+#else
+
+#define AMTRACE(_x_)
+#define AMTRACEFN()
+
+#endif
+
+#endif // __WXDEBUG__
+
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/wxlist.cpp

@@ -0,0 +1,891 @@
+//------------------------------------------------------------------------------
+// File: WXList.cpp
+//
+// Desc: DirectShow base classes - implements a non-MFC based generic list
+//       template class.
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+/* A generic list of pointers to objects.
+   Objectives: avoid using MFC libraries in ndm kernel mode and
+   provide a really useful list type.
+
+   The class is thread safe in that separate threads may add and
+   delete items in the list concurrently although the application
+   must ensure that constructor and destructor access is suitably
+   synchronised.
+
+   The list name must not conflict with MFC classes as an
+   application may use both
+
+   The nodes form a doubly linked, NULL terminated chain with an anchor
+   block (the list object per se) holding pointers to the first and last
+   nodes and a count of the nodes.
+   There is a node cache to reduce the allocation and freeing overhead.
+   It optionally (determined at construction time) has an Event which is
+   set whenever the list becomes non-empty and reset whenever it becomes
+   empty.
+   It optionally (determined at construction time) has a Critical Section
+   which is entered during the important part of each operation.  (About
+   all you can do outside it is some parameter checking).
+
+   The node cache is a repository of nodes that are NOT in the list to speed
+   up storage allocation.  Each list has its own cache to reduce locking and
+   serialising.  The list accesses are serialised anyway for a given list - a
+   common cache would mean that we would have to separately serialise access
+   of all lists within the cache.  Because the cache only stores nodes that are
+   not in the list, releasing the cache does not release any list nodes.  This
+   means that list nodes can be copied or rechained from one list to another
+   without danger of creating a dangling reference if the original cache goes
+   away.
+
+   Questionable design decisions:
+   1. Retaining the warts for compatibility
+   2. Keeping an element count -i.e. counting whenever we do anything
+      instead of only when we want the count.
+   3. Making the chain pointers NULL terminated.  If the list object
+      itself looks just like a node and the list is kept as a ring then
+      it reduces the number of special cases.  All inserts look the same.
+*/
+
+
+#include <streams.h>
+
+/* set cursor to the position of each element of list in turn  */
+#define INTERNALTRAVERSELIST(list, cursor)               \
+for ( cursor = (list).GetHeadPositionI()           \
+    ; cursor!=NULL                               \
+    ; cursor = (list).Next(cursor)                \
+    )
+
+
+/* set cursor to the position of each element of list in turn
+   in reverse order
+*/
+#define INTERNALREVERSETRAVERSELIST(list, cursor)        \
+for ( cursor = (list).GetTailPositionI()           \
+    ; cursor!=NULL                               \
+    ; cursor = (list).Prev(cursor)                \
+    )
+
+/* Constructor calls a separate initialisation function that
+   creates a node cache, optionally creates a lock object
+   and optionally creates a signaling object.
+
+   By default we create a locking object, a DEFAULTCACHE sized
+   cache but no event object so the list cannot be used in calls
+   to WaitForSingleObject
+*/
+CBaseList::CBaseList(__in_opt LPCTSTR pName,    // Descriptive list name
+                     INT iItems) :    // Node cache size
+#ifdef DEBUG
+    CBaseObject(pName),
+#endif
+    m_pFirst(NULL),
+    m_pLast(NULL),
+    m_Count(0),
+    m_Cache(iItems)
+{
+} // constructor
+
+CBaseList::CBaseList(__in_opt LPCTSTR pName) :  // Descriptive list name
+#ifdef DEBUG
+    CBaseObject(pName),
+#endif
+    m_pFirst(NULL),
+    m_pLast(NULL),
+    m_Count(0),
+    m_Cache(DEFAULTCACHE)
+{
+} // constructor
+
+#ifdef UNICODE
+CBaseList::CBaseList(__in_opt LPCSTR pName,    // Descriptive list name
+                     INT iItems) :    // Node cache size
+#ifdef DEBUG
+    CBaseObject(pName),
+#endif
+    m_pFirst(NULL),
+    m_pLast(NULL),
+    m_Count(0),
+    m_Cache(iItems)
+{
+} // constructor
+
+CBaseList::CBaseList(__in_opt LPCSTR pName) :  // Descriptive list name
+#ifdef DEBUG
+    CBaseObject(pName),
+#endif
+    m_pFirst(NULL),
+    m_pLast(NULL),
+    m_Count(0),
+    m_Cache(DEFAULTCACHE)
+{
+} // constructor
+
+#endif
+
+/* The destructor enumerates all the node objects in the list and
+   in the cache deleting each in turn. We do not do any processing
+   on the objects that the list holds (i.e. points to) so if they
+   represent interfaces for example the creator of the list should
+   ensure that each of them is released before deleting us
+*/
+CBaseList::~CBaseList()
+{
+    /* Delete all our list nodes */
+
+    RemoveAll();
+
+} // destructor
+
+/* Remove all the nodes from the list but don't do anything
+   with the objects that each node looks after (this is the
+   responsibility of the creator).
+   Aa a last act we reset the signalling event
+   (if available) to indicate to clients that the list
+   does not have any entries in it.
+*/
+void CBaseList::RemoveAll()
+{
+    /* Free up all the CNode objects NOTE we don't bother putting the
+       deleted nodes into the cache as this method is only really called
+       in serious times of change such as when we are being deleted at
+       which point the cache will be deleted anway */
+
+    CNode *pn = m_pFirst;
+    while (pn) {
+        CNode *op = pn;
+        pn = pn->Next();
+        delete op;
+    }
+
+    /* Reset the object count and the list pointers */
+
+    m_Count = 0;
+    m_pFirst = m_pLast = NULL;
+
+} // RemoveAll
+
+
+
+/* Return a position enumerator for the entire list.
+   A position enumerator is a pointer to a node object cast to a
+   transparent type so all we do is return the head/tail node
+   pointer in the list.
+   WARNING because the position is a pointer to a node there is
+   an implicit assumption for users a the list class that after
+   deleting an object from the list that any other position
+   enumerators that you have may be invalid (since the node
+   may be gone).
+*/
+__out_opt POSITION CBaseList::GetHeadPositionI() const
+{
+    return (POSITION) m_pFirst;
+} // GetHeadPosition
+
+
+
+__out_opt POSITION CBaseList::GetTailPositionI() const
+{
+    return (POSITION) m_pLast;
+} // GetTailPosition
+
+
+
+/* Get the number of objects in the list,
+   Get the lock before accessing the count.
+   Locking may not be entirely necessary but it has the side effect
+   of making sure that all operations are complete before we get it.
+   So for example if a list is being added to this list then that
+   will have completed in full before we continue rather than seeing
+   an intermediate albeit valid state
+*/
+int CBaseList::GetCountI() const
+{
+    return m_Count;
+} // GetCount
+
+
+
+/* Return the object at rp, update rp to the next object from
+   the list or NULL if you have moved over the last object.
+   You may still call this function once we return NULL but
+   we will continue to return a NULL position value
+*/
+__out void *CBaseList::GetNextI(__inout POSITION& rp) const
+{
+    /* have we reached the end of the list */
+
+    if (rp == NULL) {
+        return NULL;
+    }
+
+    /* Lock the object before continuing */
+
+    void *pObject;
+
+    /* Copy the original position then step on */
+
+    CNode *pn = (CNode *) rp;
+    ASSERT(pn != NULL);
+    rp = (POSITION) pn->Next();
+
+    /* Get the object at the original position from the list */
+
+    pObject = pn->GetData();
+    // ASSERT(pObject != NULL);    // NULL pointers in the list are allowed.
+    return pObject;
+} //GetNext
+
+
+
+/* Return the object at p.
+   Asking for the object at NULL ASSERTs then returns NULL
+   The object is NOT locked.  The list is not being changed
+   in any way.  If another thread is busy deleting the object
+   then locking would only result in a change from one bad
+   behaviour to another.
+*/
+__out_opt void *CBaseList::GetI(__in_opt POSITION p) const
+{
+    if (p == NULL) {
+        return NULL;
+    }
+
+    CNode * pn = (CNode *) p;
+    void *pObject = pn->GetData();
+    // ASSERT(pObject != NULL);    // NULL pointers in the list are allowed.
+    return pObject;
+} //Get
+
+__out void *CBaseList::GetValidI(__in POSITION p) const
+{
+    CNode * pn = (CNode *) p;
+    void *pObject = pn->GetData();
+    // ASSERT(pObject != NULL);    // NULL pointers in the list are allowed.
+    return pObject;
+} //Get
+
+
+/* Return the first position in the list which holds the given pointer.
+   Return NULL if it's not found.
+*/
+__out_opt POSITION CBaseList::FindI( __in void * pObj) const
+{
+    POSITION pn;
+    INTERNALTRAVERSELIST(*this, pn){
+        if (GetI(pn)==pObj) {
+            return pn;
+        }
+    }
+    return NULL;
+} // Find
+
+
+
+/* Remove the first node in the list (deletes the pointer to its object
+   from the list, does not free the object itself).
+   Return the pointer to its object or NULL if empty
+*/
+__out_opt void *CBaseList::RemoveHeadI()
+{
+    /* All we do is get the head position and ask for that to be deleted.
+       We could special case this since some of the code path checking
+       in Remove() is redundant as we know there is no previous
+       node for example but it seems to gain little over the
+       added complexity
+    */
+
+    return RemoveI((POSITION)m_pFirst);
+} // RemoveHead
+
+
+
+/* Remove the last node in the list (deletes the pointer to its object
+   from the list, does not free the object itself).
+   Return the pointer to its object or NULL if empty
+*/
+__out_opt void *CBaseList::RemoveTailI()
+{
+    /* All we do is get the tail position and ask for that to be deleted.
+       We could special case this since some of the code path checking
+       in Remove() is redundant as we know there is no previous
+       node for example but it seems to gain little over the
+       added complexity
+    */
+
+    return RemoveI((POSITION)m_pLast);
+} // RemoveTail
+
+
+
+/* Remove the pointer to the object in this position from the list.
+   Deal with all the chain pointers
+   Return a pointer to the object removed from the list.
+   The node object that is freed as a result
+   of this operation is added to the node cache where
+   it can be used again.
+   Remove(NULL) is a harmless no-op - but probably is a wart.
+*/
+__out_opt void *CBaseList::RemoveI(__in_opt POSITION pos)
+{
+    /* Lock the critical section before continuing */
+
+    // ASSERT (pos!=NULL);     // Removing NULL is to be harmless!
+    if (pos==NULL) return NULL;
+
+
+    CNode *pCurrent = (CNode *) pos;
+    ASSERT(pCurrent != NULL);
+
+    /* Update the previous node */
+
+    CNode *pNode = pCurrent->Prev();
+    if (pNode == NULL) {
+        m_pFirst = pCurrent->Next();
+    } else {
+        pNode->SetNext(pCurrent->Next());
+    }
+
+    /* Update the following node */
+
+    pNode = pCurrent->Next();
+    if (pNode == NULL) {
+        m_pLast = pCurrent->Prev();
+    } else {
+        pNode->SetPrev(pCurrent->Prev());
+    }
+
+    /* Get the object this node was looking after */
+
+    void *pObject = pCurrent->GetData();
+
+    // ASSERT(pObject != NULL);    // NULL pointers in the list are allowed.
+
+    /* Try and add the node object to the cache -
+       a NULL return code from the cache means we ran out of room.
+       The cache size is fixed by a constructor argument when the
+       list is created and defaults to DEFAULTCACHE.
+       This means that the cache will have room for this many
+       node objects. So if you have a list of media samples
+       and you know there will never be more than five active at
+       any given time of them for example then override the default
+       constructor
+    */
+
+    m_Cache.AddToCache(pCurrent);
+
+    /* If the list is empty then reset the list event */
+
+    --m_Count;
+    ASSERT(m_Count >= 0);
+    return pObject;
+} // Remove
+
+
+
+/* Add this object to the tail end of our list
+   Return the new tail position.
+*/
+
+__out_opt POSITION CBaseList::AddTailI(__in void *pObject)
+{
+    /* Lock the critical section before continuing */
+
+    CNode *pNode;
+    // ASSERT(pObject);   // NULL pointers in the list are allowed.
+
+    /* If there is a node objects in the cache then use
+       that otherwise we will have to create a new one */
+
+    pNode = (CNode *) m_Cache.RemoveFromCache();
+    if (pNode == NULL) {
+        pNode = new CNode;
+    }
+
+    /* Check we have a valid object */
+
+    if (pNode == NULL) {
+        return NULL;
+    }
+
+    /* Initialise all the CNode object
+       just in case it came from the cache
+    */
+
+    pNode->SetData(pObject);
+    pNode->SetNext(NULL);
+    pNode->SetPrev(m_pLast);
+
+    if (m_pLast == NULL) {
+        m_pFirst = pNode;
+    } else {
+        m_pLast->SetNext(pNode);
+    }
+
+    /* Set the new last node pointer and also increment the number
+       of list entries, the critical section is unlocked when we
+       exit the function
+    */
+
+    m_pLast = pNode;
+    ++m_Count;
+
+    return (POSITION) pNode;
+} // AddTail(object)
+
+
+
+/* Add this object to the head end of our list
+   Return the new head position.
+*/
+__out_opt POSITION CBaseList::AddHeadI(__in void *pObject)
+{
+    CNode *pNode;
+    // ASSERT(pObject);  // NULL pointers in the list are allowed.
+
+    /* If there is a node objects in the cache then use
+       that otherwise we will have to create a new one */
+
+    pNode = (CNode *) m_Cache.RemoveFromCache();
+    if (pNode == NULL) {
+        pNode = new CNode;
+    }
+
+    /* Check we have a valid object */
+
+    if (pNode == NULL) {
+        return NULL;
+    }
+
+    /* Initialise all the CNode object
+       just in case it came from the cache
+    */
+
+    pNode->SetData(pObject);
+
+    /* chain it in (set four pointers) */
+    pNode->SetPrev(NULL);
+    pNode->SetNext(m_pFirst);
+
+    if (m_pFirst == NULL) {
+        m_pLast = pNode;
+    } else {
+        m_pFirst->SetPrev(pNode);
+    }
+    m_pFirst = pNode;
+
+    ++m_Count;
+
+    return (POSITION) pNode;
+} // AddHead(object)
+
+
+
+/* Add all the elements in *pList to the tail of this list.
+   Return TRUE if it all worked, FALSE if it didn't.
+   If it fails some elements may have been added.
+*/
+BOOL CBaseList::AddTail(__in CBaseList *pList)
+{
+    /* lock the object before starting then enumerate
+       each entry in the source list and add them one by one to
+       our list (while still holding the object lock)
+       Lock the other list too.
+    */
+    POSITION pos = pList->GetHeadPositionI();
+
+    while (pos) {
+       if (NULL == AddTailI(pList->GetNextI(pos))) {
+           return FALSE;
+       }
+    }
+    return TRUE;
+} // AddTail(list)
+
+
+
+/* Add all the elements in *pList to the head of this list.
+   Return TRUE if it all worked, FALSE if it didn't.
+   If it fails some elements may have been added.
+*/
+BOOL CBaseList::AddHead(__in CBaseList *pList)
+{
+    /* lock the object before starting then enumerate
+       each entry in the source list and add them one by one to
+       our list (while still holding the object lock)
+       Lock the other list too.
+
+       To avoid reversing the list, traverse it backwards.
+    */
+
+    POSITION pos;
+
+    INTERNALREVERSETRAVERSELIST(*pList, pos) {
+        if (NULL== AddHeadI(pList->GetValidI(pos))){
+            return FALSE;
+        }
+    }
+    return TRUE;
+} // AddHead(list)
+
+
+
+/* Add the object after position p
+   p is still valid after the operation.
+   AddAfter(NULL,x) adds x to the start - same as AddHead
+   Return the position of the new object, NULL if it failed
+*/
+__out_opt POSITION  CBaseList::AddAfterI(__in_opt POSITION pos, __in void * pObj)
+{
+    if (pos==NULL)
+        return AddHeadI(pObj);
+
+    /* As someone else might be furkling with the list -
+       Lock the critical section before continuing
+    */
+    CNode *pAfter = (CNode *) pos;
+    ASSERT(pAfter != NULL);
+    if (pAfter==m_pLast)
+        return AddTailI(pObj);
+
+    /* set pnode to point to a new node, preferably from the cache */
+
+    CNode *pNode = (CNode *) m_Cache.RemoveFromCache();
+    if (pNode == NULL) {
+        pNode = new CNode;
+    }
+
+    /* Check we have a valid object */
+
+    if (pNode == NULL) {
+        return NULL;
+    }
+
+    /* Initialise all the CNode object
+       just in case it came from the cache
+    */
+
+    pNode->SetData(pObj);
+
+    /* It is to be added to the middle of the list - there is a before
+       and after node.  Chain it after pAfter, before pBefore.
+    */
+    CNode * pBefore = pAfter->Next();
+    ASSERT(pBefore != NULL);
+
+    /* chain it in (set four pointers) */
+    pNode->SetPrev(pAfter);
+    pNode->SetNext(pBefore);
+    pBefore->SetPrev(pNode);
+    pAfter->SetNext(pNode);
+
+    ++m_Count;
+
+    return (POSITION) pNode;
+
+} // AddAfter(object)
+
+
+
+BOOL CBaseList::AddAfter(__in_opt POSITION p, __in CBaseList *pList)
+{
+    POSITION pos;
+    INTERNALTRAVERSELIST(*pList, pos) {
+        /* p follows along the elements being added */
+        p = AddAfterI(p, pList->GetValidI(pos));
+        if (p==NULL) return FALSE;
+    }
+    return TRUE;
+} // AddAfter(list)
+
+
+
+/* Mirror images:
+   Add the element or list after position p.
+   p is still valid after the operation.
+   AddBefore(NULL,x) adds x to the end - same as AddTail
+*/
+__out_opt POSITION CBaseList::AddBeforeI(__in_opt POSITION pos, __in void * pObj)
+{
+    if (pos==NULL)
+        return AddTailI(pObj);
+
+    /* set pnode to point to a new node, preferably from the cache */
+
+    CNode *pBefore = (CNode *) pos;
+    ASSERT(pBefore != NULL);
+    if (pBefore==m_pFirst)
+        return AddHeadI(pObj);
+
+    CNode * pNode = (CNode *) m_Cache.RemoveFromCache();
+    if (pNode == NULL) {
+        pNode = new CNode;
+    }
+
+    /* Check we have a valid object */
+
+    if (pNode == NULL) {
+        return NULL;
+    }
+
+    /* Initialise all the CNode object
+       just in case it came from the cache
+    */
+
+    pNode->SetData(pObj);
+
+    /* It is to be added to the middle of the list - there is a before
+       and after node.  Chain it after pAfter, before pBefore.
+    */
+
+    CNode * pAfter = pBefore->Prev();
+    ASSERT(pAfter != NULL);
+
+    /* chain it in (set four pointers) */
+    pNode->SetPrev(pAfter);
+    pNode->SetNext(pBefore);
+    pBefore->SetPrev(pNode);
+    pAfter->SetNext(pNode);
+
+    ++m_Count;
+
+    return (POSITION) pNode;
+
+} // Addbefore(object)
+
+
+
+BOOL CBaseList::AddBefore(__in_opt POSITION p, __in CBaseList *pList)
+{
+    POSITION pos;
+    INTERNALREVERSETRAVERSELIST(*pList, pos) {
+        /* p follows along the elements being added */
+        p = AddBeforeI(p, pList->GetValidI(pos));
+        if (p==NULL) return FALSE;
+    }
+    return TRUE;
+} // AddBefore(list)
+
+
+
+/* Split *this after position p in *this
+   Retain as *this the tail portion of the original *this
+   Add the head portion to the tail end of *pList
+   Return TRUE if it all worked, FALSE if it didn't.
+
+   e.g.
+      foo->MoveToTail(foo->GetHeadPosition(), bar);
+          moves one element from the head of foo to the tail of bar
+      foo->MoveToTail(NULL, bar);
+          is a no-op
+      foo->MoveToTail(foo->GetTailPosition, bar);
+          concatenates foo onto the end of bar and empties foo.
+
+   A better, except excessively long name might be
+       MoveElementsFromHeadThroughPositionToOtherTail
+*/
+BOOL CBaseList::MoveToTail
+        (__in_opt POSITION pos, __in CBaseList *pList)
+{
+    /* Algorithm:
+       Note that the elements (including their order) in the concatenation
+       of *pList to the head of *this is invariant.
+       1. Count elements to be moved
+       2. Join *pList onto the head of this to make one long chain
+       3. Set first/Last pointers in *this and *pList
+       4. Break the chain at the new place
+       5. Adjust counts
+       6. Set/Reset any events
+    */
+
+    if (pos==NULL) return TRUE;  // no-op.  Eliminates special cases later.
+
+
+    /* Make cMove the number of nodes to move */
+    CNode * p = (CNode *)pos;
+    int cMove = 0;            // number of nodes to move
+    while(p!=NULL) {
+       p = p->Prev();
+       ++cMove;
+    }
+
+
+    /* Join the two chains together */
+    if (pList->m_pLast!=NULL)
+        pList->m_pLast->SetNext(m_pFirst);
+    if (m_pFirst!=NULL)
+        m_pFirst->SetPrev(pList->m_pLast);
+
+
+    /* set first and last pointers */
+    p = (CNode *)pos;
+
+    if (pList->m_pFirst==NULL)
+        pList->m_pFirst = m_pFirst;
+    m_pFirst = p->Next();
+    if (m_pFirst==NULL)
+        m_pLast = NULL;
+    pList->m_pLast = p;
+
+
+    /* Break the chain after p to create the new pieces */
+    if (m_pFirst!=NULL)
+        m_pFirst->SetPrev(NULL);
+    p->SetNext(NULL);
+
+
+    /* Adjust the counts */
+    m_Count -= cMove;
+    pList->m_Count += cMove;
+
+    return TRUE;
+
+} // MoveToTail
+
+
+
+/* Mirror image of MoveToTail:
+   Split *this before position p in *this.
+   Retain in *this the head portion of the original *this
+   Add the tail portion to the start (i.e. head) of *pList
+   Return TRUE if it all worked, FALSE if it didn't.
+
+   e.g.
+      foo->MoveToHead(foo->GetTailPosition(), bar);
+          moves one element from the tail of foo to the head of bar
+      foo->MoveToHead(NULL, bar);
+          is a no-op
+      foo->MoveToHead(foo->GetHeadPosition, bar);
+          concatenates foo onto the start of bar and empties foo.
+*/
+BOOL CBaseList::MoveToHead
+        (__in_opt POSITION pos, __in CBaseList *pList)
+{
+
+    /* See the comments on the algorithm in MoveToTail */
+
+    if (pos==NULL) return TRUE;  // no-op.  Eliminates special cases later.
+
+    /* Make cMove the number of nodes to move */
+    CNode * p = (CNode *)pos;
+    int cMove = 0;            // number of nodes to move
+    while(p!=NULL) {
+       p = p->Next();
+       ++cMove;
+    }
+
+
+    /* Join the two chains together */
+    if (pList->m_pFirst!=NULL)
+        pList->m_pFirst->SetPrev(m_pLast);
+    if (m_pLast!=NULL)
+        m_pLast->SetNext(pList->m_pFirst);
+
+
+    /* set first and last pointers */
+    p = (CNode *)pos;
+
+
+    if (pList->m_pLast==NULL)
+        pList->m_pLast = m_pLast;
+
+    m_pLast = p->Prev();
+    if (m_pLast==NULL)
+        m_pFirst = NULL;
+    pList->m_pFirst = p;
+
+
+    /* Break the chain after p to create the new pieces */
+    if (m_pLast!=NULL)
+        m_pLast->SetNext(NULL);
+    p->SetPrev(NULL);
+
+
+    /* Adjust the counts */
+    m_Count -= cMove;
+    pList->m_Count += cMove;
+
+    return TRUE;
+
+} // MoveToHead
+
+
+
+/* Reverse the order of the [pointers to] objects in *this
+*/
+void CBaseList::Reverse()
+{
+    /* algorithm:
+       The obvious booby trap is that you flip pointers around and lose
+       addressability to the node that you are going to process next.
+       The easy way to avoid this is do do one chain at a time.
+
+       Run along the forward chain,
+       For each node, set the reverse pointer to the one ahead of us.
+       The reverse chain is now a copy of the old forward chain, including
+       the NULL termination.
+
+       Run along the reverse chain (i.e. old forward chain again)
+       For each node set the forward pointer of the node ahead to point back
+       to the one we're standing on.
+       The first node needs special treatment,
+       it's new forward pointer is NULL.
+       Finally set the First/Last pointers
+
+    */
+    CNode * p;
+
+    // Yes we COULD use a traverse, but it would look funny!
+    p = m_pFirst;
+    while (p!=NULL) {
+        CNode * q;
+        q = p->Next();
+        p->SetNext(p->Prev());
+        p->SetPrev(q);
+        p = q;
+    }
+
+    p = m_pFirst;
+    m_pFirst = m_pLast;
+    m_pLast = p;
+
+
+#if 0     // old version
+
+    if (m_pFirst==NULL) return;          // empty list
+    if (m_pFirst->Next()==NULL) return;  // single node list
+
+
+    /* run along forward chain */
+    for ( p = m_pFirst
+        ; p!=NULL
+        ; p = p->Next()
+        ){
+        p->SetPrev(p->Next());
+    }
+
+
+    /* special case first element */
+    m_pFirst->SetNext(NULL);     // fix the old first element
+
+
+    /* run along new reverse chain i.e. old forward chain again */
+    for ( p = m_pFirst           // start at the old first element
+        ; p->Prev()!=NULL        // while there's a node still to be set
+        ; p = p->Prev()          // work in the same direction as before
+        ){
+        p->Prev()->SetNext(p);
+    }
+
+
+    /* fix forward and reverse pointers
+       - the triple XOR swap would work but all the casts look hideous */
+    p = m_pFirst;
+    m_pFirst = m_pLast;
+    m_pLast = p;
+#endif
+
+} // Reverse

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/wxlist.h

@@ -0,0 +1,553 @@
+//------------------------------------------------------------------------------
+// File: WXList.h
+//
+// Desc: DirectShow base classes - defines a non-MFC generic template list
+//       class.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+/* A generic list of pointers to objects.
+   No storage management or copying is done on the objects pointed to.
+   Objectives: avoid using MFC libraries in ndm kernel mode and
+   provide a really useful list type.
+
+   The class is thread safe in that separate threads may add and
+   delete items in the list concurrently although the application
+   must ensure that constructor and destructor access is suitably
+   synchronised. An application can cause deadlock with operations
+   which use two lists by simultaneously calling
+   list1->Operation(list2) and list2->Operation(list1).  So don't!
+
+   The names must not conflict with MFC classes as an application
+   may use both.
+   */
+
+#ifndef __WXLIST__
+#define __WXLIST__
+
+   /* A POSITION represents (in some fashion that's opaque) a cursor
+      on the list that can be set to identify any element.  NULL is
+      a valid value and several operations regard NULL as the position
+      "one step off the end of the list".  (In an n element list there
+      are n+1 places to insert and NULL is that "n+1-th" value).
+      The POSITION of an element in the list is only invalidated if
+      that element is deleted.  Move operations may mean that what
+      was a valid POSITION in one list is now a valid POSITION in
+      a different list.
+
+      Some operations which at first sight are illegal are allowed as
+      harmless no-ops.  For instance RemoveHead is legal on an empty
+      list and it returns NULL.  This allows an atomic way to test if
+      there is an element there, and if so, get it.  The two operations
+      AddTail and RemoveHead thus implement a MONITOR (See Hoare's paper).
+
+      Single element operations return POSITIONs, non-NULL means it worked.
+      whole list operations return a BOOL.  TRUE means it all worked.
+
+      This definition is the same as the POSITION type for MFCs, so we must
+      avoid defining it twice.
+   */
+#ifndef __AFX_H__
+struct __POSITION { int unused; };
+typedef __POSITION* POSITION;
+#endif
+
+const int DEFAULTCACHE = 10;    /* Default node object cache size */
+
+/* A class representing one node in a list.
+   Each node knows a pointer to it's adjacent nodes and also a pointer
+   to the object that it looks after.
+   All of these pointers can be retrieved or set through member functions.
+*/
+class CBaseList 
+#ifdef DEBUG
+    : public CBaseObject
+#endif
+{
+    /* Making these classes inherit from CBaseObject does nothing
+       functionally but it allows us to check there are no memory
+       leaks in debug builds. 
+    */
+
+public:
+
+#ifdef DEBUG
+    class CNode : public CBaseObject {
+#else
+    class CNode {
+#endif
+
+        CNode *m_pPrev;         /* Previous node in the list */
+        CNode *m_pNext;         /* Next node in the list */
+        void *m_pObject;      /* Pointer to the object */
+
+    public:
+
+        /* Constructor - initialise the object's pointers */
+        CNode()
+#ifdef DEBUG
+            : CBaseObject(NAME("List node"))
+#endif
+        {
+        };
+
+
+        /* Return the previous node before this one */
+        __out CNode *Prev() const { return m_pPrev; };
+
+
+        /* Return the next node after this one */
+        __out CNode *Next() const { return m_pNext; };
+
+
+        /* Set the previous node before this one */
+        void SetPrev(__in_opt CNode *p) { m_pPrev = p; };
+
+
+        /* Set the next node after this one */
+        void SetNext(__in_opt CNode *p) { m_pNext = p; };
+
+
+        /* Get the pointer to the object for this node */
+        __out void *GetData() const { return m_pObject; };
+
+
+        /* Set the pointer to the object for this node */
+        void SetData(__in void *p) { m_pObject = p; };
+    };
+
+    class CNodeCache
+    {
+    public:
+        CNodeCache(INT iCacheSize) : m_iCacheSize(iCacheSize),
+                                     m_pHead(NULL),
+                                     m_iUsed(0)
+                                     {};
+        ~CNodeCache() {
+            CNode *pNode = m_pHead;
+            while (pNode) {
+                CNode *pCurrent = pNode;
+                pNode = pNode->Next();
+                delete pCurrent;
+            }
+        };
+        void AddToCache(__inout CNode *pNode)
+        {
+            if (m_iUsed < m_iCacheSize) {
+                pNode->SetNext(m_pHead);
+                m_pHead = pNode;
+                m_iUsed++;
+            } else {
+                delete pNode;
+            }
+        };
+        CNode *RemoveFromCache()
+        {
+            CNode *pNode = m_pHead;
+            if (pNode != NULL) {
+                m_pHead = pNode->Next();
+                m_iUsed--;
+                ASSERT(m_iUsed >= 0);
+            } else {
+                ASSERT(m_iUsed == 0);
+            }
+            return pNode;
+        };
+    private:
+        INT m_iCacheSize;
+        INT m_iUsed;
+        CNode *m_pHead;
+    };
+
+protected:
+
+    CNode* m_pFirst;    /* Pointer to first node in the list */
+    CNode* m_pLast;     /* Pointer to the last node in the list */
+    LONG m_Count;       /* Number of nodes currently in the list */
+
+private:
+
+    CNodeCache m_Cache; /* Cache of unused node pointers */
+
+private:
+
+    /* These override the default copy constructor and assignment
+       operator for all list classes. They are in the private class
+       declaration section so that anybody trying to pass a list
+       object by value will generate a compile time error of
+       "cannot access the private member function". If these were
+       not here then the compiler will create default constructors
+       and assignment operators which when executed first take a
+       copy of all member variables and then during destruction
+       delete them all. This must not be done for any heap
+       allocated data.
+    */
+    CBaseList(const CBaseList &refList);
+    CBaseList &operator=(const CBaseList &refList);
+
+public:
+
+    CBaseList(__in_opt LPCTSTR pName,
+              INT iItems);
+
+    CBaseList(__in_opt LPCTSTR pName);
+#ifdef UNICODE
+    CBaseList(__in_opt LPCSTR pName,
+              INT iItems);
+
+    CBaseList(__in_opt LPCSTR pName);
+#endif
+    ~CBaseList();
+
+    /* Remove all the nodes from *this i.e. make the list empty */
+    void RemoveAll();
+
+
+    /* Return a cursor which identifies the first element of *this */
+    __out_opt POSITION GetHeadPositionI() const;
+
+
+    /* Return a cursor which identifies the last element of *this */
+    __out_opt POSITION GetTailPositionI() const;
+
+
+    /* Return the number of objects in *this */
+    int GetCountI() const;
+
+protected:
+    /* Return the pointer to the object at rp,
+       Update rp to the next node in *this
+       but make it NULL if it was at the end of *this.
+       This is a wart retained for backwards compatibility.
+       GetPrev is not implemented.
+       Use Next, Prev and Get separately.
+    */
+    __out void *GetNextI(__inout POSITION& rp) const;
+
+
+    /* Return a pointer to the object at p
+       Asking for the object at NULL will return NULL harmlessly.
+    */
+    __out_opt void *GetI(__in_opt POSITION p) const;
+    __out void *GetValidI(__in POSITION p) const;
+
+public:
+    /* return the next / prev position in *this
+       return NULL when going past the end/start.
+       Next(NULL) is same as GetHeadPosition()
+       Prev(NULL) is same as GetTailPosition()
+       An n element list therefore behaves like a n+1 element
+       cycle with NULL at the start/end.
+
+       !!WARNING!! - This handling of NULL is DIFFERENT from GetNext.
+
+       Some reasons are:
+       1. For a list of n items there are n+1 positions to insert
+          These are conveniently encoded as the n POSITIONs and NULL.
+       2. If you are keeping a list sorted (fairly common) and you
+          search forward for an element to insert before and don't
+          find it you finish up with NULL as the element before which
+          to insert.  You then want that NULL to be a valid POSITION
+          so that you can insert before it and you want that insertion
+          point to mean the (n+1)-th one that doesn't have a POSITION.
+          (symmetrically if you are working backwards through the list).
+       3. It simplifies the algebra which the methods generate.
+          e.g. AddBefore(p,x) is identical to AddAfter(Prev(p),x)
+          in ALL cases.  All the other arguments probably are reflections
+          of the algebraic point.
+    */
+    __out_opt POSITION Next(__in_opt POSITION pos) const
+    {
+        if (pos == NULL) {
+            return (POSITION) m_pFirst;
+        }
+        CNode *pn = (CNode *) pos;
+        return (POSITION) pn->Next();
+    } //Next
+
+    // See Next
+    __out_opt POSITION Prev(__in_opt POSITION pos) const
+    {
+        if (pos == NULL) {
+            return (POSITION) m_pLast;
+        }
+        CNode *pn = (CNode *) pos;
+        return (POSITION) pn->Prev();
+    } //Prev
+
+
+    /* Return the first position in *this which holds the given
+       pointer.  Return NULL if the pointer was not not found.
+    */
+protected:
+    __out_opt POSITION FindI( __in void * pObj) const;
+
+    // ??? Should there be (or even should there be only)
+    // ??? POSITION FindNextAfter(void * pObj, POSITION p)
+    // ??? And of course FindPrevBefore too.
+    // ??? List.Find(&Obj) then becomes List.FindNextAfter(&Obj, NULL)
+
+
+    /* Remove the first node in *this (deletes the pointer to its
+       object from the list, does not free the object itself).
+       Return the pointer to its object.
+       If *this was already empty it will harmlessly return NULL.
+    */
+    __out_opt void *RemoveHeadI();
+
+
+    /* Remove the last node in *this (deletes the pointer to its
+       object from the list, does not free the object itself).
+       Return the pointer to its object.
+       If *this was already empty it will harmlessly return NULL.
+    */
+    __out_opt void *RemoveTailI();
+
+
+    /* Remove the node identified by p from the list (deletes the pointer
+       to its object from the list, does not free the object itself).
+       Asking to Remove the object at NULL will harmlessly return NULL.
+       Return the pointer to the object removed.
+    */
+    __out_opt void *RemoveI(__in_opt POSITION p);
+
+    /* Add single object *pObj to become a new last element of the list.
+       Return the new tail position, NULL if it fails.
+       If you are adding a COM objects, you might want AddRef it first.
+       Other existing POSITIONs in *this are still valid
+    */
+    __out_opt POSITION AddTailI(__in void * pObj);
+public:
+
+
+    /* Add all the elements in *pList to the tail of *this.
+       This duplicates all the nodes in *pList (i.e. duplicates
+       all its pointers to objects).  It does not duplicate the objects.
+       If you are adding a list of pointers to a COM object into the list
+       it's a good idea to AddRef them all  it when you AddTail it.
+       Return TRUE if it all worked, FALSE if it didn't.
+       If it fails some elements may have been added.
+       Existing POSITIONs in *this are still valid
+
+       If you actually want to MOVE the elements, use MoveToTail instead.
+    */
+    BOOL AddTail(__in CBaseList *pList);
+
+
+    /* Mirror images of AddHead: */
+
+    /* Add single object to become a new first element of the list.
+       Return the new head position, NULL if it fails.
+       Existing POSITIONs in *this are still valid
+    */
+protected:
+    __out_opt POSITION AddHeadI(__in void * pObj);
+public:
+
+    /* Add all the elements in *pList to the head of *this.
+       Same warnings apply as for AddTail.
+       Return TRUE if it all worked, FALSE if it didn't.
+       If it fails some of the objects may have been added.
+
+       If you actually want to MOVE the elements, use MoveToHead instead.
+    */
+    BOOL AddHead(__in CBaseList *pList);
+
+
+    /* Add the object *pObj to *this after position p in *this.
+       AddAfter(NULL,x) adds x to the start - equivalent to AddHead
+       Return the position of the object added, NULL if it failed.
+       Existing POSITIONs in *this are undisturbed, including p.
+    */
+protected:
+    __out_opt POSITION AddAfterI(__in_opt POSITION p, __in void * pObj);
+public:
+
+    /* Add the list *pList to *this after position p in *this
+       AddAfter(NULL,x) adds x to the start - equivalent to AddHead
+       Return TRUE if it all worked, FALSE if it didn't.
+       If it fails, some of the objects may be added
+       Existing POSITIONs in *this are undisturbed, including p.
+    */
+    BOOL AddAfter(__in_opt POSITION p, __in CBaseList *pList);
+
+
+    /* Mirror images:
+       Add the object *pObj to this-List after position p in *this.
+       AddBefore(NULL,x) adds x to the end - equivalent to AddTail
+       Return the position of the new object, NULL if it fails
+       Existing POSITIONs in *this are undisturbed, including p.
+    */
+    protected:
+    __out_opt POSITION AddBeforeI(__in_opt POSITION p, __in void * pObj);
+    public:
+
+    /* Add the list *pList to *this before position p in *this
+       AddAfter(NULL,x) adds x to the start - equivalent to AddHead
+       Return TRUE if it all worked, FALSE if it didn't.
+       If it fails, some of the objects may be added
+       Existing POSITIONs in *this are undisturbed, including p.
+    */
+    BOOL AddBefore(__in_opt POSITION p, __in CBaseList *pList);
+
+
+    /* Note that AddAfter(p,x) is equivalent to AddBefore(Next(p),x)
+       even in cases where p is NULL or Next(p) is NULL.
+       Similarly for mirror images etc.
+       This may make it easier to argue about programs.
+    */
+
+
+
+    /* The following operations do not copy any elements.
+       They move existing blocks of elements around by switching pointers.
+       They are fairly efficient for long lists as for short lists.
+       (Alas, the Count slows things down).
+
+       They split the list into two parts.
+       One part remains as the original list, the other part
+       is appended to the second list.  There are eight possible
+       variations:
+       Split the list {after/before} a given element
+       keep the {head/tail} portion in the original list
+       append the rest to the {head/tail} of the new list.
+
+       Since After is strictly equivalent to Before Next
+       we are not in serious need of the Before/After variants.
+       That leaves only four.
+
+       If you are processing a list left to right and dumping
+       the bits that you have processed into another list as
+       you go, the Tail/Tail variant gives the most natural result.
+       If you are processing in reverse order, Head/Head is best.
+
+       By using NULL positions and empty lists judiciously either
+       of the other two can be built up in two operations.
+
+       The definition of NULL (see Next/Prev etc) means that
+       degenerate cases include
+          "move all elements to new list"
+          "Split a list into two lists"
+          "Concatenate two lists"
+          (and quite a few no-ops)
+
+       !!WARNING!! The type checking won't buy you much if you get list
+       positions muddled up - e.g. use a POSITION that's in a different
+       list and see what a mess you get!
+    */
+
+    /* Split *this after position p in *this
+       Retain as *this the tail portion of the original *this
+       Add the head portion to the tail end of *pList
+       Return TRUE if it all worked, FALSE if it didn't.
+
+       e.g.
+          foo->MoveToTail(foo->GetHeadPosition(), bar);
+              moves one element from the head of foo to the tail of bar
+          foo->MoveToTail(NULL, bar);
+              is a no-op, returns NULL
+          foo->MoveToTail(foo->GetTailPosition, bar);
+              concatenates foo onto the end of bar and empties foo.
+
+       A better, except excessively long name might be
+           MoveElementsFromHeadThroughPositionToOtherTail
+    */
+    BOOL MoveToTail(__in_opt POSITION pos, __in CBaseList *pList);
+
+
+    /* Mirror image:
+       Split *this before position p in *this.
+       Retain in *this the head portion of the original *this
+       Add the tail portion to the start (i.e. head) of *pList
+
+       e.g.
+          foo->MoveToHead(foo->GetTailPosition(), bar);
+              moves one element from the tail of foo to the head of bar
+          foo->MoveToHead(NULL, bar);
+              is a no-op, returns NULL
+          foo->MoveToHead(foo->GetHeadPosition, bar);
+              concatenates foo onto the start of bar and empties foo.
+    */
+    BOOL MoveToHead(__in_opt POSITION pos, __in CBaseList *pList);
+
+
+    /* Reverse the order of the [pointers to] objects in *this
+    */
+    void Reverse();
+
+
+    /* set cursor to the position of each element of list in turn  */
+    #define TRAVERSELIST(list, cursor)               \
+    for ( cursor = (list).GetHeadPosition()           \
+        ; cursor!=NULL                               \
+        ; cursor = (list).Next(cursor)                \
+        )
+
+
+    /* set cursor to the position of each element of list in turn
+       in reverse order
+    */
+    #define REVERSETRAVERSELIST(list, cursor)        \
+    for ( cursor = (list).GetTailPosition()           \
+        ; cursor!=NULL                               \
+        ; cursor = (list).Prev(cursor)                \
+        )
+
+}; // end of class declaration
+
+template<class OBJECT> class CGenericList : public CBaseList
+{
+public:
+    CGenericList(__in_opt LPCTSTR pName,
+                 INT iItems,
+                 BOOL bLock = TRUE,
+                 BOOL bAlert = FALSE) :
+                     CBaseList(pName, iItems) {
+        UNREFERENCED_PARAMETER(bAlert);
+        UNREFERENCED_PARAMETER(bLock);
+    };
+    CGenericList(__in_opt LPCTSTR pName) :
+                     CBaseList(pName) {
+    };
+
+    __out_opt POSITION GetHeadPosition() const { return (POSITION)m_pFirst; }
+    __out_opt POSITION GetTailPosition() const { return (POSITION)m_pLast; }
+    int GetCount() const { return m_Count; }
+
+    __out OBJECT *GetNext(__inout POSITION& rp) const { return (OBJECT *) GetNextI(rp); }
+
+    __out_opt OBJECT *Get(__in_opt POSITION p) const { return (OBJECT *) GetI(p); }
+    __out OBJECT *GetValid(__in POSITION p) const { return (OBJECT *) GetValidI(p); }
+    __out_opt OBJECT *GetHead() const  { return Get(GetHeadPosition()); }
+
+    __out_opt OBJECT *RemoveHead() { return (OBJECT *) RemoveHeadI(); }
+
+    __out_opt OBJECT *RemoveTail() { return (OBJECT *) RemoveTailI(); }
+
+    __out_opt OBJECT *Remove(__in_opt POSITION p) { return (OBJECT *) RemoveI(p); }
+    __out_opt POSITION AddBefore(__in_opt POSITION p, __in OBJECT * pObj) { return AddBeforeI(p, pObj); }
+    __out_opt POSITION AddAfter(__in_opt POSITION p, __in OBJECT * pObj)  { return AddAfterI(p, pObj); }
+    __out_opt POSITION AddHead(__in OBJECT * pObj) { return AddHeadI(pObj); }
+    __out_opt POSITION AddTail(__in OBJECT * pObj)  { return AddTailI(pObj); }
+    BOOL AddTail(__in CGenericList<OBJECT> *pList)
+            { return CBaseList::AddTail((CBaseList *) pList); }
+    BOOL AddHead(__in CGenericList<OBJECT> *pList)
+            { return CBaseList::AddHead((CBaseList *) pList); }
+    BOOL AddAfter(__in_opt POSITION p, __in CGenericList<OBJECT> *pList)
+            { return CBaseList::AddAfter(p, (CBaseList *) pList); };
+    BOOL AddBefore(__in_opt POSITION p, __in CGenericList<OBJECT> *pList)
+            { return CBaseList::AddBefore(p, (CBaseList *) pList); };
+    __out_opt POSITION Find( __in OBJECT * pObj) const { return FindI(pObj); }
+}; // end of class declaration
+
+
+
+/* These define the standard list types */
+
+typedef CGenericList<CBaseObject> CBaseObjectList;
+typedef CGenericList<IUnknown> CBaseInterfaceList;
+
+#endif /* __WXLIST__ */
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/wxutil.cpp

@@ -0,0 +1,769 @@
+//------------------------------------------------------------------------------
+// File: WXUtil.cpp
+//
+// Desc: DirectShow base classes - implements helper classes for building
+//       multimedia filters.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#include <streams.h>
+#define STRSAFE_NO_DEPRECATE
+#include <strsafe.h>
+
+
+// --- CAMEvent -----------------------
+CAMEvent::CAMEvent(BOOL fManualReset, __inout_opt HRESULT *phr)
+{
+    m_hEvent = CreateEvent(NULL, fManualReset, FALSE, NULL);
+    if (NULL == m_hEvent) {
+        if (NULL != phr && SUCCEEDED(*phr)) {
+            *phr = E_OUTOFMEMORY;
+        }
+    }
+}
+
+CAMEvent::CAMEvent(__inout_opt HRESULT *phr)
+{
+    m_hEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
+    if (NULL == m_hEvent) {
+        if (NULL != phr && SUCCEEDED(*phr)) {
+            *phr = E_OUTOFMEMORY;
+        }
+    }
+}
+
+CAMEvent::~CAMEvent()
+{
+    if (m_hEvent) {
+	EXECUTE_ASSERT(CloseHandle(m_hEvent));
+    }
+}
+
+
+// --- CAMMsgEvent -----------------------
+// One routine.  The rest is handled in CAMEvent
+
+CAMMsgEvent::CAMMsgEvent(__inout_opt HRESULT *phr) : CAMEvent(FALSE, phr)
+{
+}
+
+BOOL CAMMsgEvent::WaitMsg(DWORD dwTimeout)
+{
+    // wait for the event to be signalled, or for the
+    // timeout (in MS) to expire.  allow SENT messages
+    // to be processed while we wait
+    DWORD dwWait;
+    DWORD dwStartTime;
+
+    // set the waiting period.
+    DWORD dwWaitTime = dwTimeout;
+
+    // the timeout will eventually run down as we iterate
+    // processing messages.  grab the start time so that
+    // we can calculate elapsed times.
+    if (dwWaitTime != INFINITE) {
+        dwStartTime = timeGetTime();
+    }
+
+    do {
+        dwWait = MsgWaitForMultipleObjects(1,&m_hEvent,FALSE, dwWaitTime, QS_SENDMESSAGE);
+        if (dwWait == WAIT_OBJECT_0 + 1) {
+	    MSG Message;
+            PeekMessage(&Message,NULL,0,0,PM_NOREMOVE);
+
+	    // If we have an explicit length of time to wait calculate
+	    // the next wake up point - which might be now.
+	    // If dwTimeout is INFINITE, it stays INFINITE
+	    if (dwWaitTime != INFINITE) {
+
+		DWORD dwElapsed = timeGetTime()-dwStartTime;
+
+		dwWaitTime =
+		    (dwElapsed >= dwTimeout)
+			? 0  // wake up with WAIT_TIMEOUT
+			: dwTimeout-dwElapsed;
+	    }
+        }
+    } while (dwWait == WAIT_OBJECT_0 + 1);
+
+    // return TRUE if we woke on the event handle,
+    //        FALSE if we timed out.
+    return (dwWait == WAIT_OBJECT_0);
+}
+
+// --- CAMThread ----------------------
+
+
+CAMThread::CAMThread(__inout_opt HRESULT *phr)
+    : m_EventSend(TRUE, phr),     // must be manual-reset for CheckRequest()
+      m_EventComplete(FALSE, phr)
+{
+    m_hThread = NULL;
+}
+
+CAMThread::~CAMThread() {
+    Close();
+}
+
+
+// when the thread starts, it calls this function. We unwrap the 'this'
+//pointer and call ThreadProc.
+DWORD WINAPI
+CAMThread::InitialThreadProc(__inout LPVOID pv)
+{
+    HRESULT hrCoInit = CAMThread::CoInitializeHelper();
+    if(FAILED(hrCoInit)) {
+        DbgLog((LOG_ERROR, 1, TEXT("CoInitializeEx failed.")));
+    }
+
+    CAMThread * pThread = (CAMThread *) pv;
+
+    HRESULT hr = pThread->ThreadProc();
+
+    if(SUCCEEDED(hrCoInit)) {
+        CoUninitialize();
+    }
+
+    return hr;
+}
+
+BOOL
+CAMThread::Create()
+{
+    DWORD threadid;
+
+    CAutoLock lock(&m_AccessLock);
+
+    if (ThreadExists()) {
+	return FALSE;
+    }
+
+    m_hThread = CreateThread(
+		    NULL,
+		    0,
+		    CAMThread::InitialThreadProc,
+		    this,
+		    0,
+		    &threadid);
+
+    if (!m_hThread) {
+	return FALSE;
+    }
+
+    return TRUE;
+}
+
+DWORD
+CAMThread::CallWorker(DWORD dwParam)
+{
+    // lock access to the worker thread for scope of this object
+    CAutoLock lock(&m_AccessLock);
+
+    if (!ThreadExists()) {
+	return (DWORD) E_FAIL;
+    }
+
+    // set the parameter
+    m_dwParam = dwParam;
+
+    // signal the worker thread
+    m_EventSend.Set();
+
+    // wait for the completion to be signalled
+    m_EventComplete.Wait();
+
+    // done - this is the thread's return value
+    return m_dwReturnVal;
+}
+
+// Wait for a request from the client
+DWORD
+CAMThread::GetRequest()
+{
+    m_EventSend.Wait();
+    return m_dwParam;
+}
+
+// is there a request?
+BOOL
+CAMThread::CheckRequest(__out_opt DWORD * pParam)
+{
+    if (!m_EventSend.Check()) {
+	return FALSE;
+    } else {
+	if (pParam) {
+	    *pParam = m_dwParam;
+	}
+	return TRUE;
+    }
+}
+
+// reply to the request
+void
+CAMThread::Reply(DWORD dw)
+{
+    m_dwReturnVal = dw;
+
+    // The request is now complete so CheckRequest should fail from
+    // now on
+    //
+    // This event should be reset BEFORE we signal the client or
+    // the client may Set it before we reset it and we'll then
+    // reset it (!)
+
+    m_EventSend.Reset();
+
+    // Tell the client we're finished
+
+    m_EventComplete.Set();
+}
+
+HRESULT CAMThread::CoInitializeHelper()
+{
+    // call CoInitializeEx and tell OLE not to create a window (this
+    // thread probably won't dispatch messages and will hang on
+    // broadcast msgs o/w).
+    //
+    // If CoInitEx is not available, threads that don't call CoCreate
+    // aren't affected. Threads that do will have to handle the
+    // failure. Perhaps we should fall back to CoInitialize and risk
+    // hanging?
+    //
+
+    // older versions of ole32.dll don't have CoInitializeEx
+
+    HRESULT hr = E_FAIL;
+    HINSTANCE hOle = GetModuleHandle(TEXT("ole32.dll"));
+    if(hOle)
+    {
+        typedef HRESULT (STDAPICALLTYPE *PCoInitializeEx)(
+            LPVOID pvReserved, DWORD dwCoInit);
+        PCoInitializeEx pCoInitializeEx =
+            (PCoInitializeEx)(GetProcAddress(hOle, "CoInitializeEx"));
+        if(pCoInitializeEx)
+        {
+            hr = (*pCoInitializeEx)(0, COINIT_DISABLE_OLE1DDE );
+        }
+    }
+    else
+    {
+        // caller must load ole32.dll
+        DbgBreak("couldn't locate ole32.dll");
+    }
+
+    return hr;
+}
+
+
+// destructor for CMsgThread  - cleans up any messages left in the
+// queue when the thread exited
+CMsgThread::~CMsgThread()
+{
+    if (m_hThread != NULL) {
+        WaitForSingleObject(m_hThread, INFINITE);
+        EXECUTE_ASSERT(CloseHandle(m_hThread));
+    }
+
+    POSITION pos = m_ThreadQueue.GetHeadPosition();
+    while (pos) {
+        CMsg * pMsg = m_ThreadQueue.GetNext(pos);
+        delete pMsg;
+    }
+    m_ThreadQueue.RemoveAll();
+
+    if (m_hSem != NULL) {
+        EXECUTE_ASSERT(CloseHandle(m_hSem));
+    }
+}
+
+BOOL
+CMsgThread::CreateThread(
+    )
+{
+    m_hSem = CreateSemaphore(NULL, 0, 0x7FFFFFFF, NULL);
+    if (m_hSem == NULL) {
+        return FALSE;
+    }
+
+    m_hThread = ::CreateThread(NULL, 0, DefaultThreadProc,
+			       (LPVOID)this, 0, &m_ThreadId);
+    return m_hThread != NULL;
+}
+
+
+// This is the threads message pump.  Here we get and dispatch messages to
+// clients thread proc until the client refuses to process a message.
+// The client returns a non-zero value to stop the message pump, this
+// value becomes the threads exit code.
+
+DWORD WINAPI
+CMsgThread::DefaultThreadProc(
+    __inout LPVOID lpParam
+    )
+{
+    CMsgThread *lpThis = (CMsgThread *)lpParam;
+    CMsg msg;
+    LRESULT lResult;
+
+    // !!!
+    CoInitialize(NULL);
+
+    // allow a derived class to handle thread startup
+    lpThis->OnThreadInit();
+
+    do {
+	lpThis->GetThreadMsg(&msg);
+	lResult = lpThis->ThreadMessageProc(msg.uMsg,msg.dwFlags,
+					    msg.lpParam, msg.pEvent);
+    } while (lResult == 0L);
+
+    // !!!
+    CoUninitialize();
+
+    return (DWORD)lResult;
+}
+
+
+// Block until the next message is placed on the list m_ThreadQueue.
+// copies the message to the message pointed to by *pmsg
+void
+CMsgThread::GetThreadMsg(__out CMsg *msg)
+{
+    CMsg * pmsg = NULL;
+
+    // keep trying until a message appears
+    while (TRUE) {
+        {
+            CAutoLock lck(&m_Lock);
+            pmsg = m_ThreadQueue.RemoveHead();
+            if (pmsg == NULL) {
+                m_lWaiting++;
+            } else {
+                break;
+            }
+        }
+        // the semaphore will be signalled when it is non-empty
+        WaitForSingleObject(m_hSem, INFINITE);
+    }
+    // copy fields to caller's CMsg
+    *msg = *pmsg;
+
+    // this CMsg was allocated by the 'new' in PutThreadMsg
+    delete pmsg;
+
+}
+
+// Helper function - convert int to WSTR
+void WINAPI IntToWstr(int i, __out_ecount(12) LPWSTR wstr)
+{
+#ifdef UNICODE
+    if (FAILED(StringCchPrintf(wstr, 12, L"%d", i))) {
+        wstr[0] = 0;
+    }
+#else
+    TCHAR temp[12];
+    if (FAILED(StringCchPrintf(temp, NUMELMS(temp), "%d", i))) {
+        wstr[0] = 0;
+    } else {
+        MultiByteToWideChar(CP_ACP, 0, temp, -1, wstr, 12);
+    }
+#endif
+} // IntToWstr
+
+
+#define MEMORY_ALIGNMENT        4
+#define MEMORY_ALIGNMENT_LOG2   2
+#define MEMORY_ALIGNMENT_MASK   MEMORY_ALIGNMENT - 1
+
+void * __stdcall memmoveInternal(void * dst, const void * src, size_t count)
+{
+    void * ret = dst;
+
+#ifdef _X86_
+    if (dst <= src || (char *)dst >= ((char *)src + count)) {
+
+        /*
+         * Non-Overlapping Buffers
+         * copy from lower addresses to higher addresses
+         */
+        _asm {
+            mov     esi,src
+            mov     edi,dst
+            mov     ecx,count
+            cld
+            mov     edx,ecx
+            and     edx,MEMORY_ALIGNMENT_MASK
+            shr     ecx,MEMORY_ALIGNMENT_LOG2
+            rep     movsd
+            or      ecx,edx
+            jz      memmove_done
+            rep     movsb
+memmove_done:
+        }
+    }
+    else {
+
+        /*
+         * Overlapping Buffers
+         * copy from higher addresses to lower addresses
+         */
+        _asm {
+            mov     esi,src
+            mov     edi,dst
+            mov     ecx,count
+            std
+            add     esi,ecx
+            add     edi,ecx
+            dec     esi
+            dec     edi
+            rep     movsb
+            cld
+        }
+    }
+#else
+    MoveMemory(dst, src, count);
+#endif
+
+    return ret;
+}
+
+HRESULT AMSafeMemMoveOffset(
+    __in_bcount(dst_size) void * dst,
+    __in size_t dst_size,
+    __in DWORD cb_dst_offset,
+    __in_bcount(src_size) const void * src,
+    __in size_t src_size,
+    __in DWORD cb_src_offset,
+    __in size_t count)
+{
+    // prevent read overruns
+    if( count + cb_src_offset < count ||   // prevent integer overflow
+        count + cb_src_offset > src_size)  // prevent read overrun
+    {
+        return E_INVALIDARG;
+    }
+
+    // prevent write overruns
+    if( count + cb_dst_offset < count ||   // prevent integer overflow
+        count + cb_dst_offset > dst_size)  // prevent write overrun
+    {
+        return E_INVALIDARG;
+    }
+
+    memmoveInternal( (BYTE *)dst+cb_dst_offset, (BYTE *)src+cb_src_offset, count);
+    return S_OK;
+}
+
+
+#ifdef DEBUG
+/******************************Public*Routine******************************\
+* Debug CCritSec helpers
+*
+* We provide debug versions of the Constructor, destructor, Lock and Unlock
+* routines.  The debug code tracks who owns each critical section by
+* maintaining a depth count.
+*
+* History:
+*
+\**************************************************************************/
+
+CCritSec::CCritSec()
+{
+    InitializeCriticalSection(&m_CritSec);
+    m_currentOwner = m_lockCount = 0;
+    m_fTrace = FALSE;
+}
+
+CCritSec::~CCritSec()
+{
+    DeleteCriticalSection(&m_CritSec);
+}
+
+void CCritSec::Lock()
+{
+    UINT tracelevel=3;
+    DWORD us = GetCurrentThreadId();
+    DWORD currentOwner = m_currentOwner;
+    if (currentOwner && (currentOwner != us)) {
+        // already owned, but not by us
+        if (m_fTrace) {
+            DbgLog((LOG_LOCKING, 2, TEXT("Thread %d about to wait for lock %x owned by %d"),
+                GetCurrentThreadId(), &m_CritSec, currentOwner));
+            tracelevel=2;
+	        // if we saw the message about waiting for the critical
+	        // section we ensure we see the message when we get the
+	        // critical section
+        }
+    }
+    EnterCriticalSection(&m_CritSec);
+    if (0 == m_lockCount++) {
+        // we now own it for the first time.  Set owner information
+        m_currentOwner = us;
+
+        if (m_fTrace) {
+            DbgLog((LOG_LOCKING, tracelevel, TEXT("Thread %d now owns lock %x"), m_currentOwner, &m_CritSec));
+        }
+    }
+}
+
+void CCritSec::Unlock() {
+    if (0 == --m_lockCount) {
+        // about to be unowned
+        if (m_fTrace) {
+            DbgLog((LOG_LOCKING, 3, TEXT("Thread %d releasing lock %x"), m_currentOwner, &m_CritSec));
+        }
+
+        m_currentOwner = 0;
+    }
+    LeaveCriticalSection(&m_CritSec);
+}
+
+void WINAPI DbgLockTrace(CCritSec * pcCrit, BOOL fTrace)
+{
+    pcCrit->m_fTrace = fTrace;
+}
+
+BOOL WINAPI CritCheckIn(CCritSec * pcCrit)
+{
+    return (GetCurrentThreadId() == pcCrit->m_currentOwner);
+}
+
+BOOL WINAPI CritCheckIn(const CCritSec * pcCrit)
+{
+    return (GetCurrentThreadId() == pcCrit->m_currentOwner);
+}
+
+BOOL WINAPI CritCheckOut(CCritSec * pcCrit)
+{
+    return (GetCurrentThreadId() != pcCrit->m_currentOwner);
+}
+
+BOOL WINAPI CritCheckOut(const CCritSec * pcCrit)
+{
+    return (GetCurrentThreadId() != pcCrit->m_currentOwner);
+}
+#endif
+
+
+STDAPI WriteBSTR(__deref_out BSTR *pstrDest, LPCWSTR szSrc)
+{
+    *pstrDest = SysAllocString( szSrc );
+    if( !(*pstrDest) ) return E_OUTOFMEMORY;
+    return NOERROR;
+}
+
+
+STDAPI FreeBSTR(__deref_in BSTR* pstr)
+{
+    if( (PVOID)*pstr == NULL ) return S_FALSE;
+    SysFreeString( *pstr );
+    return NOERROR;
+}
+
+
+// Return a wide string - allocating memory for it
+// Returns:
+//    S_OK          - no error
+//    E_POINTER     - ppszReturn == NULL
+//    E_OUTOFMEMORY - can't allocate memory for returned string
+STDAPI AMGetWideString(LPCWSTR psz, __deref_out LPWSTR *ppszReturn)
+{
+    CheckPointer(ppszReturn, E_POINTER);
+    ValidateReadWritePtr(ppszReturn, sizeof(LPWSTR));
+    *ppszReturn = NULL;
+    size_t nameLen;
+    HRESULT hr = StringCbLengthW(psz, 100000, &nameLen);
+    if (FAILED(hr)) {
+        return hr;
+    }
+    *ppszReturn = (LPWSTR)CoTaskMemAlloc(nameLen + sizeof(WCHAR));
+    if (*ppszReturn == NULL) {
+       return E_OUTOFMEMORY;
+    }
+    CopyMemory(*ppszReturn, psz, nameLen + sizeof(WCHAR));
+    return NOERROR;
+}
+
+// Waits for the HANDLE hObject.  While waiting messages sent
+// to windows on our thread by SendMessage will be processed.
+// Using this function to do waits and mutual exclusion
+// avoids some deadlocks in objects with windows.
+// Return codes are the same as for WaitForSingleObject
+DWORD WINAPI WaitDispatchingMessages(
+    HANDLE hObject,
+    DWORD dwWait,
+    HWND hwnd,
+    UINT uMsg,
+    HANDLE hEvent)
+{
+    BOOL bPeeked = FALSE;
+    DWORD dwResult;
+    DWORD dwStart;
+    DWORD dwThreadPriority;
+
+    static UINT uMsgId = 0;
+
+    HANDLE hObjects[2] = { hObject, hEvent };
+    if (dwWait != INFINITE && dwWait != 0) {
+        dwStart = GetTickCount();
+    }
+    for (; ; ) {
+        DWORD nCount = NULL != hEvent ? 2 : 1;
+
+        //  Minimize the chance of actually dispatching any messages
+        //  by seeing if we can lock immediately.
+        dwResult = WaitForMultipleObjects(nCount, hObjects, FALSE, 0);
+        if (dwResult < WAIT_OBJECT_0 + nCount) {
+            break;
+        }
+
+        DWORD dwTimeOut = dwWait;
+        if (dwTimeOut > 10) {
+            dwTimeOut = 10;
+        }
+        dwResult = MsgWaitForMultipleObjects(
+                             nCount,
+                             hObjects,
+                             FALSE,
+                             dwTimeOut,
+                             hwnd == NULL ? QS_SENDMESSAGE :
+                                            QS_SENDMESSAGE + QS_POSTMESSAGE);
+        if (dwResult == WAIT_OBJECT_0 + nCount ||
+            dwResult == WAIT_TIMEOUT && dwTimeOut != dwWait) {
+            MSG msg;
+            if (hwnd != NULL) {
+                while (PeekMessage(&msg, hwnd, uMsg, uMsg, PM_REMOVE)) {
+                    DispatchMessage(&msg);
+                }
+            }
+            // Do this anyway - the previous peek doesn't flush out the
+            // messages
+            PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE);
+
+            if (dwWait != INFINITE && dwWait != 0) {
+                DWORD dwNow = GetTickCount();
+
+                // Working with differences handles wrap-around
+                DWORD dwDiff = dwNow - dwStart;
+                if (dwDiff > dwWait) {
+                    dwWait = 0;
+                } else {
+                    dwWait -= dwDiff;
+                }
+                dwStart = dwNow;
+            }
+            if (!bPeeked) {
+                //  Raise our priority to prevent our message queue
+                //  building up
+                dwThreadPriority = GetThreadPriority(GetCurrentThread());
+                if (dwThreadPriority < THREAD_PRIORITY_HIGHEST) {
+                    SetThreadPriority(GetCurrentThread(), THREAD_PRIORITY_HIGHEST);
+                }
+                bPeeked = TRUE;
+            }
+        } else {
+            break;
+        }
+    }
+    if (bPeeked) {
+        SetThreadPriority(GetCurrentThread(), dwThreadPriority);
+        if (HIWORD(GetQueueStatus(QS_POSTMESSAGE)) & QS_POSTMESSAGE) {
+            if (uMsgId == 0) {
+                uMsgId = RegisterWindowMessage(TEXT("AMUnblock"));
+            }
+            if (uMsgId != 0) {
+                MSG msg;
+                //  Remove old ones
+                while (PeekMessage(&msg, (HWND)-1, uMsgId, uMsgId, PM_REMOVE)) {
+                }
+            }
+            PostThreadMessage(GetCurrentThreadId(), uMsgId, 0, 0);
+        }
+    }
+    return dwResult;
+}
+
+HRESULT AmGetLastErrorToHResult()
+{
+    DWORD dwLastError = GetLastError();
+    if(dwLastError != 0)
+    {
+        return HRESULT_FROM_WIN32(dwLastError);
+    }
+    else
+    {
+        return E_FAIL;
+    }
+}
+
+IUnknown* QzAtlComPtrAssign(__deref_inout_opt IUnknown** pp, __in_opt IUnknown* lp)
+{
+    if (lp != NULL)
+        lp->AddRef();
+    if (*pp)
+        (*pp)->Release();
+    *pp = lp;
+    return lp;
+}
+
+/******************************************************************************
+
+CompatibleTimeSetEvent
+
+    CompatibleTimeSetEvent() sets the TIME_KILL_SYNCHRONOUS flag before calling
+timeSetEvent() if the current operating system supports it.  TIME_KILL_SYNCHRONOUS
+is supported on Windows XP and later operating systems.
+
+Parameters:
+- The same parameters as timeSetEvent().  See timeSetEvent()'s documentation in 
+the Platform SDK for more information.
+
+Return Value:
+- The same return value as timeSetEvent().  See timeSetEvent()'s documentation in 
+the Platform SDK for more information.
+
+******************************************************************************/
+MMRESULT CompatibleTimeSetEvent( UINT uDelay, UINT uResolution, __in LPTIMECALLBACK lpTimeProc, DWORD_PTR dwUser, UINT fuEvent )
+{
+    #if WINVER >= 0x0501
+    {
+        static bool fCheckedVersion = false;
+        static bool fTimeKillSynchronousFlagAvailable = false; 
+
+        if( !fCheckedVersion ) {
+            fTimeKillSynchronousFlagAvailable = TimeKillSynchronousFlagAvailable();
+            fCheckedVersion = true;
+        }
+
+        if( fTimeKillSynchronousFlagAvailable ) {
+            fuEvent = fuEvent | TIME_KILL_SYNCHRONOUS;
+        }
+    }
+    #endif // WINVER >= 0x0501
+
+    return timeSetEvent( uDelay, uResolution, lpTimeProc, dwUser, fuEvent );
+}
+
+bool TimeKillSynchronousFlagAvailable( void )
+{
+    OSVERSIONINFO osverinfo;
+
+    osverinfo.dwOSVersionInfoSize = sizeof(osverinfo);
+
+    if( GetVersionEx( &osverinfo ) ) {
+        
+        // Windows XP's major version is 5 and its' minor version is 1.
+        // timeSetEvent() started supporting the TIME_KILL_SYNCHRONOUS flag
+        // in Windows XP.
+        if( (osverinfo.dwMajorVersion > 5) || 
+            ( (osverinfo.dwMajorVersion == 5) && (osverinfo.dwMinorVersion >= 1) ) ) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+

subprojects/gst-plugins-bad/sys/directshow/strmbase/baseclasses/wxutil.h

@@ -0,0 +1,532 @@
+//------------------------------------------------------------------------------
+// File: WXUtil.h
+//
+// Desc: DirectShow base classes - defines helper classes and functions for
+//       building multimedia filters.
+//
+// Copyright (c) 1992-2001 Microsoft Corporation.  All rights reserved.
+//------------------------------------------------------------------------------
+
+
+#ifndef __WXUTIL__
+#define __WXUTIL__
+
+// eliminate spurious "statement has no effect" warnings.
+#pragma warning(disable: 4705)
+
+// wrapper for whatever critical section we have
+class CCritSec {
+
+    // make copy constructor and assignment operator inaccessible
+
+    CCritSec(const CCritSec &refCritSec);
+    CCritSec &operator=(const CCritSec &refCritSec);
+
+    CRITICAL_SECTION m_CritSec;
+
+#ifdef DEBUG
+public:
+    DWORD   m_currentOwner;
+    DWORD   m_lockCount;
+    BOOL    m_fTrace;        // Trace this one
+public:
+    CCritSec();
+    ~CCritSec();
+    void Lock();
+    void Unlock();
+#else
+
+public:
+    CCritSec() {
+        InitializeCriticalSection(&m_CritSec);
+    };
+
+    ~CCritSec() {
+        DeleteCriticalSection(&m_CritSec);
+    };
+
+    void Lock() {
+        EnterCriticalSection(&m_CritSec);
+    };
+
+    void Unlock() {
+        LeaveCriticalSection(&m_CritSec);
+    };
+#endif
+};
+
+//
+// To make deadlocks easier to track it is useful to insert in the
+// code an assertion that says whether we own a critical section or
+// not.  We make the routines that do the checking globals to avoid
+// having different numbers of member functions in the debug and
+// retail class implementations of CCritSec.  In addition we provide
+// a routine that allows usage of specific critical sections to be
+// traced.  This is NOT on by default - there are far too many.
+//
+
+#ifdef DEBUG
+    BOOL WINAPI CritCheckIn(CCritSec * pcCrit);
+    BOOL WINAPI CritCheckIn(const CCritSec * pcCrit);
+    BOOL WINAPI CritCheckOut(CCritSec * pcCrit);
+    BOOL WINAPI CritCheckOut(const CCritSec * pcCrit);
+    void WINAPI DbgLockTrace(CCritSec * pcCrit, BOOL fTrace);
+#else
+    #define CritCheckIn(x) TRUE
+    #define CritCheckOut(x) TRUE
+    #define DbgLockTrace(pc, fT)
+#endif
+
+
+// locks a critical section, and unlocks it automatically
+// when the lock goes out of scope
+class CAutoLock {
+
+    // make copy constructor and assignment operator inaccessible
+
+    CAutoLock(const CAutoLock &refAutoLock);
+    CAutoLock &operator=(const CAutoLock &refAutoLock);
+
+protected:
+    CCritSec * m_pLock;
+
+public:
+    CAutoLock(CCritSec * plock)
+    {
+        m_pLock = plock;
+        m_pLock->Lock();
+    };
+
+    ~CAutoLock() {
+        m_pLock->Unlock();
+    };
+};
+
+
+
+// wrapper for event objects
+class CAMEvent
+{
+
+    // make copy constructor and assignment operator inaccessible
+
+    CAMEvent(const CAMEvent &refEvent);
+    CAMEvent &operator=(const CAMEvent &refEvent);
+
+protected:
+    HANDLE m_hEvent;
+public:
+    CAMEvent(BOOL fManualReset = FALSE, __inout_opt HRESULT *phr = NULL);
+    CAMEvent(__inout_opt HRESULT *phr);
+    ~CAMEvent();
+
+    // Cast to HANDLE - we don't support this as an lvalue
+    operator HANDLE () const { return m_hEvent; };
+
+    void Set() {EXECUTE_ASSERT(SetEvent(m_hEvent));};
+    BOOL Wait(DWORD dwTimeout = INFINITE) {
+	return (WaitForSingleObject(m_hEvent, dwTimeout) == WAIT_OBJECT_0);
+    };
+    void Reset() { ResetEvent(m_hEvent); };
+    BOOL Check() { return Wait(0); };
+};
+
+
+// wrapper for event objects that do message processing
+// This adds ONE method to the CAMEvent object to allow sent
+// messages to be processed while waiting
+
+class CAMMsgEvent : public CAMEvent
+{
+
+public:
+
+    CAMMsgEvent(__inout_opt HRESULT *phr = NULL);
+
+    // Allow SEND messages to be processed while waiting
+    BOOL WaitMsg(DWORD dwTimeout = INFINITE);
+};
+
+// old name supported for the time being
+#define CTimeoutEvent CAMEvent
+
+// support for a worker thread
+
+#ifdef AM_NOVTABLE
+// simple thread class supports creation of worker thread, synchronization
+// and communication. Can be derived to simplify parameter passing
+class AM_NOVTABLE CAMThread {
+
+    // make copy constructor and assignment operator inaccessible
+
+    CAMThread(const CAMThread &refThread);
+    CAMThread &operator=(const CAMThread &refThread);
+
+    CAMEvent m_EventSend;
+    CAMEvent m_EventComplete;
+
+    DWORD m_dwParam;
+    DWORD m_dwReturnVal;
+
+protected:
+    HANDLE m_hThread;
+
+    // thread will run this function on startup
+    // must be supplied by derived class
+    virtual DWORD ThreadProc() = 0;
+
+public:
+    CAMThread(__inout_opt HRESULT *phr = NULL);
+    virtual ~CAMThread();
+
+    CCritSec m_AccessLock;	// locks access by client threads
+    CCritSec m_WorkerLock;	// locks access to shared objects
+
+    // thread initially runs this. param is actually 'this'. function
+    // just gets this and calls ThreadProc
+    static DWORD WINAPI InitialThreadProc(__inout LPVOID pv);
+
+    // start thread running  - error if already running
+    BOOL Create();
+
+    // signal the thread, and block for a response
+    //
+    DWORD CallWorker(DWORD);
+
+    // accessor thread calls this when done with thread (having told thread
+    // to exit)
+    void Close() {
+
+        // Disable warning: Conversion from LONG to PVOID of greater size
+#pragma warning(push)
+#pragma warning(disable: 4312)
+        HANDLE hThread = (HANDLE)InterlockedExchangePointer(&m_hThread, 0);
+#pragma warning(pop)
+
+        if (hThread) {
+            WaitForSingleObject(hThread, INFINITE);
+            CloseHandle(hThread);
+        }
+    };
+
+    // ThreadExists
+    // Return TRUE if the thread exists. FALSE otherwise
+    BOOL ThreadExists(void) const
+    {
+        if (m_hThread == 0) {
+            return FALSE;
+        } else {
+            return TRUE;
+        }
+    }
+
+    // wait for the next request
+    DWORD GetRequest();
+
+    // is there a request?
+    BOOL CheckRequest(__out_opt DWORD * pParam);
+
+    // reply to the request
+    void Reply(DWORD);
+
+    // If you want to do WaitForMultipleObjects you'll need to include
+    // this handle in your wait list or you won't be responsive
+    HANDLE GetRequestHandle() const { return m_EventSend; };
+
+    // Find out what the request was
+    DWORD GetRequestParam() const { return m_dwParam; };
+
+    // call CoInitializeEx (COINIT_DISABLE_OLE1DDE) if
+    // available. S_FALSE means it's not available.
+    static HRESULT CoInitializeHelper();
+};
+#endif // AM_NOVTABLE
+
+
+// CQueue
+//
+// Implements a simple Queue ADT.  The queue contains a finite number of
+// objects, access to which is controlled by a semaphore.  The semaphore
+// is created with an initial count (N).  Each time an object is added
+// a call to WaitForSingleObject is made on the semaphore's handle.  When
+// this function returns a slot has been reserved in the queue for the new
+// object.  If no slots are available the function blocks until one becomes
+// available.  Each time an object is removed from the queue ReleaseSemaphore
+// is called on the semaphore's handle, thus freeing a slot in the queue.
+// If no objects are present in the queue the function blocks until an
+// object has been added.
+
+#define DEFAULT_QUEUESIZE   2
+
+template <class T> class CQueue {
+private:
+    HANDLE          hSemPut;        // Semaphore controlling queue "putting"
+    HANDLE          hSemGet;        // Semaphore controlling queue "getting"
+    CRITICAL_SECTION CritSect;      // Thread seriallization
+    int             nMax;           // Max objects allowed in queue
+    int             iNextPut;       // Array index of next "PutMsg"
+    int             iNextGet;       // Array index of next "GetMsg"
+    T              *QueueObjects;   // Array of objects (ptr's to void)
+
+    void Initialize(int n) {
+        iNextPut = iNextGet = 0;
+        nMax = n;
+        InitializeCriticalSection(&CritSect);
+        hSemPut = CreateSemaphore(NULL, n, n, NULL);
+        hSemGet = CreateSemaphore(NULL, 0, n, NULL);
+        QueueObjects = new T[n];
+    }
+
+
+public:
+    CQueue(int n) {
+        Initialize(n);
+    }
+
+    CQueue() {
+        Initialize(DEFAULT_QUEUESIZE);
+    }
+
+    ~CQueue() {
+        delete [] QueueObjects;
+        DeleteCriticalSection(&CritSect);
+        CloseHandle(hSemPut);
+        CloseHandle(hSemGet);
+    }
+
+    T GetQueueObject() {
+        int iSlot;
+        T Object;
+        LONG lPrevious;
+
+        // Wait for someone to put something on our queue, returns straight
+        // away is there is already an object on the queue.
+        //
+        WaitForSingleObject(hSemGet, INFINITE);
+
+        EnterCriticalSection(&CritSect);
+        iSlot = iNextGet++ % nMax;
+        Object = QueueObjects[iSlot];
+        LeaveCriticalSection(&CritSect);
+
+        // Release anyone waiting to put an object onto our queue as there
+        // is now space available in the queue.
+        //
+        ReleaseSemaphore(hSemPut, 1L, &lPrevious);
+        return Object;
+    }
+
+    void PutQueueObject(T Object) {
+        int iSlot;
+        LONG lPrevious;
+
+        // Wait for someone to get something from our queue, returns straight
+        // away is there is already an empty slot on the queue.
+        //
+        WaitForSingleObject(hSemPut, INFINITE);
+
+        EnterCriticalSection(&CritSect);
+        iSlot = iNextPut++ % nMax;
+        QueueObjects[iSlot] = Object;
+        LeaveCriticalSection(&CritSect);
+
+        // Release anyone waiting to remove an object from our queue as there
+        // is now an object available to be removed.
+        //
+        ReleaseSemaphore(hSemGet, 1L, &lPrevious);
+    }
+};
+
+// Ensures that memory is not read past the length source buffer
+// and that memory is not written past the length of the dst buffer
+//   dst - buffer to copy to
+//   dst_size - total size of destination buffer
+//   cb_dst_offset - offset, first byte copied to dst+cb_dst_offset
+//   src - buffer to copy from
+//   src_size - total size of source buffer
+//   cb_src_offset - offset, first byte copied from src+cb_src_offset
+//   count - number of bytes to copy
+//
+// Returns:
+//    S_OK          - no error
+//    E_INVALIDARG  - values passed would lead to overrun
+HRESULT AMSafeMemMoveOffset(
+    __in_bcount(dst_size) void * dst,
+    __in size_t dst_size,
+    __in DWORD cb_dst_offset,
+    __in_bcount(src_size) const void * src,
+    __in size_t src_size,
+    __in DWORD cb_src_offset,
+    __in size_t count);
+
+extern "C"
+void * __stdcall memmoveInternal(void *, const void *, size_t);
+
+inline void * __cdecl memchrInternal(const void *buf, int chr, size_t cnt)
+{
+#ifdef _X86_
+    void *pRet = NULL;
+
+    _asm {
+        cld                 // make sure we get the direction right
+        mov     ecx, cnt    // num of bytes to scan
+        mov     edi, buf    // pointer byte stream
+        mov     eax, chr    // byte to scan for
+        repne   scasb       // look for the byte in the byte stream
+        jnz     exit_memchr // Z flag set if byte found
+        dec     edi         // scasb always increments edi even when it
+                            // finds the required byte
+        mov     pRet, edi
+exit_memchr:
+    }
+    return pRet;
+
+#else
+    while ( cnt && (*(unsigned char *)buf != (unsigned char)chr) ) {
+        buf = (unsigned char *)buf + 1;
+        cnt--;
+    }
+
+    return(cnt ? (void *)buf : NULL);
+#endif
+}
+
+void WINAPI IntToWstr(int i, __out_ecount(12) LPWSTR wstr);
+
+#define WstrToInt(sz) _wtoi(sz)
+#define atoiW(sz) _wtoi(sz)
+#define atoiA(sz) atoi(sz)
+
+// These are available to help managing bitmap VIDEOINFOHEADER media structures
+
+extern const DWORD bits555[3];
+extern const DWORD bits565[3];
+extern const DWORD bits888[3];
+
+// These help convert between VIDEOINFOHEADER and BITMAPINFO structures
+
+STDAPI_(const GUID) GetTrueColorType(const BITMAPINFOHEADER *pbmiHeader);
+STDAPI_(const GUID) GetBitmapSubtype(const BITMAPINFOHEADER *pbmiHeader);
+STDAPI_(WORD) GetBitCount(const GUID *pSubtype);
+
+// strmbase.lib implements this for compatibility with people who
+// managed to link to this directly.  we don't want to advertise it.
+//
+// STDAPI_(/* T */ CHAR *) GetSubtypeName(const GUID *pSubtype);
+
+STDAPI_(CHAR *) GetSubtypeNameA(const GUID *pSubtype);
+STDAPI_(WCHAR *) GetSubtypeNameW(const GUID *pSubtype);
+
+#ifdef UNICODE
+#define GetSubtypeName GetSubtypeNameW
+#else
+#define GetSubtypeName GetSubtypeNameA
+#endif
+
+STDAPI_(LONG) GetBitmapFormatSize(const BITMAPINFOHEADER *pHeader);
+STDAPI_(DWORD) GetBitmapSize(const BITMAPINFOHEADER *pHeader);
+
+#ifdef __AMVIDEO__
+STDAPI_(BOOL) ContainsPalette(const VIDEOINFOHEADER *pVideoInfo);
+STDAPI_(const RGBQUAD *) GetBitmapPalette(const VIDEOINFOHEADER *pVideoInfo);
+#endif // __AMVIDEO__
+
+
+// Compares two interfaces and returns TRUE if they are on the same object
+BOOL WINAPI IsEqualObject(IUnknown *pFirst, IUnknown *pSecond);
+
+// This is for comparing pins
+#define EqualPins(pPin1, pPin2) IsEqualObject(pPin1, pPin2)
+
+
+// Arithmetic helper functions
+
+// Compute (a * b + rnd) / c
+LONGLONG WINAPI llMulDiv(LONGLONG a, LONGLONG b, LONGLONG c, LONGLONG rnd);
+LONGLONG WINAPI Int64x32Div32(LONGLONG a, LONG b, LONG c, LONG rnd);
+
+
+// Avoids us dyna-linking to SysAllocString to copy BSTR strings
+STDAPI WriteBSTR(__deref_out BSTR * pstrDest, LPCWSTR szSrc);
+STDAPI FreeBSTR(__deref_in BSTR* pstr);
+
+// Return a wide string - allocating memory for it
+// Returns:
+//    S_OK          - no error
+//    E_POINTER     - ppszReturn == NULL
+//    E_OUTOFMEMORY - can't allocate memory for returned string
+STDAPI AMGetWideString(LPCWSTR pszString, __deref_out LPWSTR *ppszReturn);
+
+// Special wait for objects owning windows
+DWORD WINAPI WaitDispatchingMessages(
+    HANDLE hObject,
+    DWORD dwWait,
+    HWND hwnd = NULL,
+    UINT uMsg = 0,
+    HANDLE hEvent = NULL);
+
+// HRESULT_FROM_WIN32 converts ERROR_SUCCESS to a success code, but in
+// our use of HRESULT_FROM_WIN32, it typically means a function failed
+// to call SetLastError(), and we still want a failure code.
+//
+#define AmHresultFromWin32(x) (MAKE_HRESULT(SEVERITY_ERROR, FACILITY_WIN32, x))
+
+// call GetLastError and return an HRESULT value that will fail the
+// SUCCEEDED() macro.
+HRESULT AmGetLastErrorToHResult(void);
+
+// duplicate of ATL's CComPtr to avoid linker conflicts.
+
+IUnknown* QzAtlComPtrAssign(__deref_inout_opt IUnknown** pp, __in_opt IUnknown* lp);
+
+template <class T>
+class QzCComPtr
+{
+public:
+	typedef T _PtrClass;
+	QzCComPtr() {p=NULL;}
+	QzCComPtr(T* lp)
+	{
+		if ((p = lp) != NULL)
+			p->AddRef();
+	}
+	QzCComPtr(const QzCComPtr<T>& lp)
+	{
+		if ((p = lp.p) != NULL)
+			p->AddRef();
+	}
+	~QzCComPtr() {if (p) p->Release();}
+	void Release() {if (p) p->Release(); p=NULL;}
+	operator T*() {return (T*)p;}
+	T& operator*() {ASSERT(p!=NULL); return *p; }
+	//The assert on operator& usually indicates a bug.  If this is really
+	//what is needed, however, take the address of the p member explicitly.
+	T** operator&() { ASSERT(p==NULL); return &p; }
+	T* operator->() { ASSERT(p!=NULL); return p; }
+	T* operator=(T* lp){return (T*)QzAtlComPtrAssign((IUnknown**)&p, lp);}
+	T* operator=(const QzCComPtr<T>& lp)
+	{
+		return (T*)QzAtlComPtrAssign((IUnknown**)&p, lp.p);
+	}
+#if _MSC_VER>1020
+	bool operator!(){return (p == NULL);}
+#else
+	BOOL operator!(){return (p == NULL) ? TRUE : FALSE;}
+#endif
+	T* p;
+};
+
+MMRESULT CompatibleTimeSetEvent( UINT uDelay, UINT uResolution, __in LPTIMECALLBACK lpTimeProc, DWORD_PTR dwUser, UINT fuEvent );
+bool TimeKillSynchronousFlagAvailable( void );
+
+//  Helper to replace lstrcpmi
+__inline int lstrcmpiLocaleIndependentW(LPCWSTR lpsz1, LPCWSTR lpsz2)
+{
+    return  CompareStringW(LOCALE_INVARIANT, NORM_IGNORECASE, lpsz1, -1, lpsz2, -1) - CSTR_EQUAL;
+}
+__inline int lstrcmpiLocaleIndependentA(LPCSTR lpsz1, LPCSTR lpsz2)
+{
+    return  CompareStringA(LOCALE_INVARIANT, NORM_IGNORECASE, lpsz1, -1, lpsz2, -1) - CSTR_EQUAL;
+}
+
+#endif /* __WXUTIL__ */

subprojects/gst-plugins-bad/sys/directshow/strmbase/meson.build

@@ -0,0 +1,72 @@
+strmbase_sources = [
+  'amextra.cpp',
+  'amfilter.cpp',
+  'amvideo.cpp',
+  'arithutil.cpp',
+  'combase.cpp',
+  'cprop.cpp',
+  'ctlutil.cpp',
+  'ddmm.cpp',
+  'dllentry.cpp',
+  'dllsetup.cpp',
+  'mtype.cpp',
+  'outputq.cpp',
+  'perflog.cpp',
+  'pstream.cpp',
+  'pullpin.cpp',
+  'refclock.cpp',
+  'renbase.cpp',
+  'schedule.cpp',
+  'seekpt.cpp',
+  'source.cpp',
+  'strmctl.cpp',
+  'sysclock.cpp',
+  'transfrm.cpp',
+  'transip.cpp',
+  'videoctl.cpp',
+  'vtrans.cpp',
+  'winctrl.cpp',
+  'winutil.cpp',
+  'wxdebug.cpp',
+  'wxlist.cpp',
+  'wxutil.cpp'
+]
+
+strmbase_cpp_args = ['-D_MBCS']
+strmbase_cpp_args += cxx.get_supported_arguments([
+  '/wd4189', # 'identifier' : local variable is initialized but not referenced
+  '/wd4456', # declaration of 'identifier' hides previous local declaration
+  '/wd4701', # potentially uninitialized local variable 'name' used
+  '/wd4703', # potentially uninitialized local pointer variable 'name' used
+  '/wd4706', # assignment within conditional expression
+  '/wd4996'  # code uses a function, class member, variable, or typedef that's marked deprecated
+])
+
+strmbase_subdir = 'baseclasses'
+strmbase_includes = include_directories(strmbase_subdir)
+
+strmiids_dep = cxx.find_library('strmiids', required: get_option('directshow'))
+if not strmiids_dep.found()
+  message('strmiids not found, not building directshow strmbase')
+  strmbase_dep = disabler()
+  subdir_done()
+endif
+
+strmbase_cpp_sources = []
+foreach file : strmbase_sources
+  strmbase_cpp_sources += strmbase_subdir + '/' + file
+endforeach
+
+strmbase_lib = static_library(
+  'strmbase',
+  strmbase_cpp_sources,
+  cpp_args: strmbase_cpp_args,
+  dependencies: strmiids_dep,
+  include_directories: strmbase_includes,
+  override_options: ['cpp_std=none'])
+
+strmbase_dep = declare_dependency(
+  link_with: strmbase_lib,
+  compile_args: strmbase_cpp_args,
+  dependencies: strmiids_dep,
+  include_directories: strmbase_includes)

subprojects/gst-plugins-bad/sys/meson.build

@@ -6,9 +6,7 @@ subdir('d3d11')
 subdir('d3dvideosink')
 subdir('decklink')
 subdir('directsound')
-#subdir('dshowdecwrapper')
-#subdir('dshowsrcwrapper')
-#subdir('dshowvideosink')
+subdir('directshow')
 subdir('dvb')
 subdir('fbdev')
 subdir('ipcpipeline')