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Original commit message from CVS: * sys/dshowdecwrapper/Makefile.am: * sys/dshowdecwrapper/gstdshowaudiodec.c: * sys/dshowdecwrapper/gstdshowaudiodec.cpp: * sys/dshowdecwrapper/gstdshowaudiodec.h: * sys/dshowdecwrapper/gstdshowdecwrapper.c: * sys/dshowdecwrapper/gstdshowdecwrapper.cpp: * sys/dshowdecwrapper/gstdshowdecwrapper.h: * sys/dshowdecwrapper/gstdshowfakesrc.cpp: * sys/dshowdecwrapper/gstdshowfakesrc.h: * sys/dshowdecwrapper/gstdshowutil.cpp: * sys/dshowdecwrapper/gstdshowutil.h: * sys/dshowdecwrapper/gstdshowvideodec.c: * sys/dshowdecwrapper/gstdshowvideodec.cpp: * sys/dshowdecwrapper/gstdshowvideodec.h: Major rewrite of dshowdecwrapper. Converts code to C++, moves to direct use of DirectShow base classes, make a lot of code clearer, simplify, etc. Fix decode of MP3 on Vista by working around an apparent bug in the decoder.
156 lines
4.5 KiB
C++
156 lines
4.5 KiB
C++
/* GStreamer
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* Copyright (C) 2007 Sebastien Moutte <sebastien@moutte.net>
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*
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* gstdshow.cpp:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <atlbase.h>
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#include "gstdshowutil.h"
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#include "gstdshowfakesrc.h"
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IPin *
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gst_dshow_get_pin_from_filter (IBaseFilter *filter, PIN_DIRECTION pindir)
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{
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CComPtr<IEnumPins> enumpins;
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CComPtr<IPin> pin;
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HRESULT hres;
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hres = filter->EnumPins (&enumpins);
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if (FAILED(hres)) {
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return NULL;
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}
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while (enumpins->Next (1, &pin, NULL) == S_OK)
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{
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PIN_DIRECTION pindirtmp;
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hres = pin->QueryDirection (&pindirtmp);
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if (hres == S_OK && pindir == pindirtmp) {
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return pin;
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}
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pin.Release();
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}
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return NULL;
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}
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gboolean gst_dshow_find_filter(CLSID input_majortype, CLSID input_subtype,
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CLSID output_majortype, CLSID output_subtype,
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gchar * prefered_filter_name, IBaseFilter **filter)
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{
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gboolean ret = FALSE;
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HRESULT hres;
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GUID arrayInTypes[2];
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GUID arrayOutTypes[2];
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IFilterMapper2 *mapper = NULL;
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IEnumMoniker *enum_moniker = NULL;
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IMoniker *moniker = NULL;
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ULONG fetched;
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gchar *prefered_filter_upper = NULL;
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gboolean exit = FALSE;
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/* initialize output parameter */
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if (filter)
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*filter = NULL;
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/* create a private copy of prefered filter substring in upper case */
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if (prefered_filter_name) {
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prefered_filter_upper = g_strdup (prefered_filter_name);
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strupr (prefered_filter_upper);
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}
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hres = CoCreateInstance(CLSID_FilterMapper2, NULL, CLSCTX_INPROC,
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IID_IFilterMapper2, (void **) &mapper);
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if (FAILED(hres))
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goto clean;
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memcpy(&arrayInTypes[0], &input_majortype, sizeof (CLSID));
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memcpy(&arrayInTypes[1], &input_subtype, sizeof (CLSID));
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memcpy(&arrayOutTypes[0], &output_majortype, sizeof (CLSID));
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memcpy(&arrayOutTypes[1], &output_subtype, sizeof (CLSID));
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hres = mapper->EnumMatchingFilters (&enum_moniker, 0, FALSE, MERIT_DO_NOT_USE+1,
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TRUE, 1, arrayInTypes, NULL, NULL, FALSE,
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TRUE, 1, arrayOutTypes, NULL, NULL);
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if (FAILED(hres))
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goto clean;
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enum_moniker->Reset ();
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while(hres = enum_moniker->Next (1, &moniker, &fetched),hres == S_OK
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&& !exit) {
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IBaseFilter *filter_temp = NULL;
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IPropertyBag *property_bag = NULL;
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gchar * friendly_name = NULL;
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hres = moniker->BindToStorage (NULL, NULL, IID_IPropertyBag, (void **)&property_bag);
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if(SUCCEEDED(hres) && property_bag) {
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VARIANT varFriendlyName;
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VariantInit (&varFriendlyName);
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hres = property_bag->Read (L"FriendlyName", &varFriendlyName, NULL);
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if(hres == S_OK && varFriendlyName.bstrVal) {
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friendly_name = g_utf16_to_utf8((const gunichar2*)varFriendlyName.bstrVal,
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wcslen(varFriendlyName.bstrVal), NULL, NULL, NULL);
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if (friendly_name)
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strupr (friendly_name);
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SysFreeString (varFriendlyName.bstrVal);
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}
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property_bag->Release ();
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}
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hres = moniker->BindToObject(NULL, NULL, IID_IBaseFilter, (void**)&filter_temp);
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if(SUCCEEDED(hres) && filter_temp) {
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ret = TRUE;
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if (filter) {
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if (*filter)
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(*filter)->Release ();
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*filter = filter_temp;
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(*filter)->AddRef ();
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if (prefered_filter_upper && friendly_name &&
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strstr(friendly_name, prefered_filter_upper))
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exit = TRUE;
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}
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/* if we just want to know if the formats are supported OR
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if we don't care about what will be the filter used
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=> we can stop enumeration */
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if (!filter || !prefered_filter_upper)
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exit = TRUE;
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filter_temp->Release ();
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}
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if (friendly_name)
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g_free (friendly_name);
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moniker->Release ();
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}
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clean:
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if (prefered_filter_upper)
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g_free (prefered_filter_upper);
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if (enum_moniker)
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enum_moniker->Release ();
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if (mapper)
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mapper->Release ();
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return ret;
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}
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