mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
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761 lines
22 KiB
C++
761 lines
22 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., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include <gst/video/video-format.h>
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#include "gstdshow.h"
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#include "gstdshowfakesink.h"
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#include "gstdshowvideosrc.h"
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GST_DEBUG_CATEGORY_EXTERN (dshowsrcwrapper_debug);
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#define GST_CAT_DEFAULT dshowsrcwrapper_debug
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gchar *
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wchar_to_gchar (WCHAR * w)
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{
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return g_utf16_to_utf8 ((const gunichar2 *) w, wcslen (w), NULL, NULL, NULL);
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}
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const GUID MEDIASUBTYPE_I420
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= { 0x30323449, 0x0000, 0x0010, {0x80, 0x00, 0x00, 0xAA, 0x00, 0x38, 0x9B,
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0x71}
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};
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void
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gst_dshow_free_mediatype (AM_MEDIA_TYPE * pmt)
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{
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if (pmt != NULL) {
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if (pmt->cbFormat != 0) {
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CoTaskMemFree ((PVOID) pmt->pbFormat);
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pmt->cbFormat = 0;
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pmt->pbFormat = NULL;
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}
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if (pmt->pUnk != NULL) {
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/* Unnecessary because pUnk should not be used, but safest. */
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pmt->pUnk->Release ();
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pmt->pUnk = NULL;
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}
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CoTaskMemFree (pmt);
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}
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}
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void
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gst_dshow_free_pin_mediatype (gpointer pt)
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{
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GstCapturePinMediaType *pin_mediatype = (GstCapturePinMediaType *) pt;
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if (pin_mediatype) {
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if (pin_mediatype->capture_pin) {
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pin_mediatype->capture_pin->Release ();
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pin_mediatype->capture_pin = NULL;
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}
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if (pin_mediatype->mediatype) {
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gst_dshow_free_mediatype (pin_mediatype->mediatype);
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pin_mediatype->mediatype = NULL;
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}
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}
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}
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GstCapturePinMediaType *
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gst_dshow_new_pin_mediatype (IPin * pin)
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{
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GstCapturePinMediaType *pin_mediatype = g_new0 (GstCapturePinMediaType, 1);
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pin->AddRef ();
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pin_mediatype->capture_pin = pin;
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return pin_mediatype;
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}
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GstCapturePinMediaType *
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gst_dshow_new_pin_mediatype_from_enum_mediatypes (IPin * pin, IEnumMediaTypes *enum_mediatypes)
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{
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GstCapturePinMediaType *pin_mediatype = gst_dshow_new_pin_mediatype (pin);
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VIDEOINFOHEADER *video_info = NULL;
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HRESULT hres = enum_mediatypes->Next (1, &pin_mediatype->mediatype, NULL);
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if (hres != S_OK || !pin_mediatype->mediatype) {
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gst_dshow_free_pin_mediatype (pin_mediatype);
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return NULL;
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}
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video_info = (VIDEOINFOHEADER *) pin_mediatype->mediatype->pbFormat;
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pin_mediatype->defaultWidth = video_info->bmiHeader.biWidth;
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pin_mediatype->defaultHeight = video_info->bmiHeader.biHeight;
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pin_mediatype->defaultFPS = (gint) (10000000 / video_info->AvgTimePerFrame);
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pin_mediatype->granularityWidth = 1;
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pin_mediatype->granularityHeight = 1;
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return pin_mediatype;
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}
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GstCapturePinMediaType *
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gst_dshow_new_pin_mediatype_from_streamcaps (IPin * pin, gint id, IAMStreamConfig * streamcaps)
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{
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GstCapturePinMediaType *pin_mediatype = gst_dshow_new_pin_mediatype (pin);
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VIDEOINFOHEADER *video_info = NULL;
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HRESULT hres = streamcaps->GetStreamCaps (id, &pin_mediatype->mediatype,
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(BYTE *) & pin_mediatype->vscc);
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if (FAILED (hres) || !pin_mediatype->mediatype) {
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gst_dshow_free_pin_mediatype (pin_mediatype);
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return NULL;
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}
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video_info = (VIDEOINFOHEADER *) pin_mediatype->mediatype->pbFormat;
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pin_mediatype->defaultWidth = video_info->bmiHeader.biWidth;
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pin_mediatype->defaultHeight = video_info->bmiHeader.biHeight;
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pin_mediatype->defaultFPS = (gint) (10000000 / video_info->AvgTimePerFrame);
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pin_mediatype->granularityWidth = pin_mediatype->vscc.OutputGranularityX;
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pin_mediatype->granularityHeight = pin_mediatype->vscc.OutputGranularityY;
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return pin_mediatype;
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}
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void
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gst_dshow_free_pins_mediatypes (GList * pins_mediatypes)
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{
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g_list_free_full (pins_mediatypes,
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(GDestroyNotify) gst_dshow_free_pin_mediatype);
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}
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gboolean
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gst_dshow_check_mediatype (AM_MEDIA_TYPE * media_type, const GUID sub_type,
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const GUID format_type)
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{
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RPC_STATUS rpcstatus;
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g_return_val_if_fail (media_type != NULL, FALSE);
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return
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UuidCompare (&media_type->subtype, (UUID *) & sub_type,
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&rpcstatus) == 0 && rpcstatus == RPC_S_OK &&
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//IsEqualGUID (&media_type->subtype, &sub_type)
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UuidCompare (&media_type->formattype, (UUID *) & format_type,
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&rpcstatus) == 0 && rpcstatus == RPC_S_OK;
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}
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gboolean
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gst_dshow_get_pin_from_filter (IBaseFilter * filter, PIN_DIRECTION pindir,
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IPin ** pin)
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{
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gboolean ret = FALSE;
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IEnumPins *enumpins = NULL;
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IPin *pintmp = NULL;
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HRESULT hres;
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*pin = NULL;
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hres = filter->EnumPins (&enumpins);
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if (FAILED (hres)) {
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return ret;
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}
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while (enumpins->Next (1, &pintmp, NULL) == S_OK) {
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PIN_DIRECTION pindirtmp;
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hres = pintmp->QueryDirection (&pindirtmp);
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if (hres == S_OK && pindir == pindirtmp) {
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*pin = pintmp;
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ret = TRUE;
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break;
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}
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pintmp->Release ();
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}
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enumpins->Release ();
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return ret;
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}
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gboolean
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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 preferred 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 =
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mapper->EnumMatchingFilters (&enum_moniker, 0, FALSE,
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MERIT_DO_NOT_USE + 1, TRUE, 1, arrayInTypes, NULL, NULL, FALSE, TRUE, 1,
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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 =
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moniker->BindToStorage (NULL, NULL, IID_IPropertyBag,
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(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 = wchar_to_gchar (varFriendlyName.bstrVal);
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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 =
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moniker->BindToObject (NULL, NULL, IID_IBaseFilter,
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(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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g_free (friendly_name);
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moniker->Release ();
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}
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clean:
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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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void
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gst_dshow_device_entry_free (DshowDeviceEntry * entry)
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{
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if (entry) {
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g_free (entry->device);
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entry->device = NULL;
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g_free (entry->device_name);
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entry->device_name = NULL;
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if (entry->caps) {
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gst_caps_unref (entry->caps);
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entry->caps = NULL;
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}
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if (entry->moniker) {
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entry->moniker->Release ();
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entry->moniker = NULL;
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}
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}
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}
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void
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gst_dshow_device_list_free (GList * devices)
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{
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GList *cur;
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for (cur = devices; cur != NULL; cur = cur->next)
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gst_dshow_device_entry_free ((DshowDeviceEntry *) cur->data);
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g_list_free (devices);
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}
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GList *
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gst_dshow_enumerate_devices (const GUID * device_category, gboolean getcaps)
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{
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GList *result = NULL;
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ICreateDevEnum *devices_enum = NULL;
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IEnumMoniker *enum_moniker = NULL;
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IMoniker *moniker = NULL;
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HRESULT hres = S_FALSE;
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ULONG fetched;
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gint devidx = -1;
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hres = CoCreateInstance (CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER,
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IID_ICreateDevEnum, (void **) &devices_enum);
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if (hres != S_OK) {
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GST_ERROR ("Failed to create System Device Enumerator");
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goto clean;
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}
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hres = devices_enum->CreateClassEnumerator (*device_category,
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&enum_moniker, 0);
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if (hres != S_OK || !enum_moniker) {
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GST_ERROR ("Failed to create audio/video class device enumerator");
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goto clean;
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}
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enum_moniker->Reset ();
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while (enum_moniker->Next (1, &moniker, &fetched) == S_OK) {
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IPropertyBag *property_bag = NULL;
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hres = moniker->BindToStorage (NULL, NULL, IID_IPropertyBag,
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(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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gchar *friendly_name = wchar_to_gchar (varFriendlyName.bstrVal);
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devidx++;
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GST_DEBUG ("Found device idx=%d: device-name='%s'",
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devidx, friendly_name);
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WCHAR *wszDisplayName = NULL;
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hres = moniker->GetDisplayName (NULL, NULL, &wszDisplayName);
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if (hres == S_OK && wszDisplayName) {
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DshowDeviceEntry *entry = g_new0 (DshowDeviceEntry, 1);
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gchar *device_path = NULL;
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GstCaps *caps = NULL;
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device_path = wchar_to_gchar (wszDisplayName);
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CoTaskMemFree (wszDisplayName);
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/* getting caps can be slow, so make it optional when enumerating */
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if (getcaps) {
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IBindCtx *lpbc = NULL;
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hres = CreateBindCtx (0, &lpbc);
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if (SUCCEEDED (hres)) {
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IBaseFilter *video_cap_filter = NULL;
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hres = moniker->BindToObject (lpbc, NULL, IID_IBaseFilter,
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(LPVOID *) & video_cap_filter);
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if (video_cap_filter) {
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caps = gst_dshowvideosrc_getcaps_from_capture_filter (video_cap_filter, NULL);
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video_cap_filter->Release ();
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}
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lpbc->Release ();
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}
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}
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entry->device = device_path;
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entry->device_name = friendly_name;
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entry->device_index = devidx;
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entry->caps = caps;
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entry->moniker = moniker;
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moniker = NULL;
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result = g_list_append (result, entry);
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} else {
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g_free (friendly_name);
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}
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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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if (moniker) {
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moniker->Release ();
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}
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}
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clean:
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if (enum_moniker) {
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enum_moniker->Release ();
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}
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if (devices_enum) {
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devices_enum->Release ();
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}
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return result;
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}
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DshowDeviceEntry *
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gst_dshow_select_device (const GUID * device_category,
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const gchar * device, const gchar * device_name, const gint device_index)
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{
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GList *devices = NULL;
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GList *item = NULL;
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DshowDeviceEntry *selected = NULL;
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GST_DEBUG ("Trying to select device-index=%d, device-name='%s', device='%s'",
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device_index, device_name, device);
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devices = gst_dshow_enumerate_devices (&CLSID_VideoInputDeviceCategory, FALSE);
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for (item = devices; item != NULL; item = item->next) {
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DshowDeviceEntry *entry = (DshowDeviceEntry *) item->data;
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/* device will be used first, then device-name, then device-index */
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if (device && g_strcmp0 (device, entry->device) == 0) {
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selected = entry;
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break;
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} else if (!device && device_name && g_strcmp0 (device_name, entry->device_name) == 0) {
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selected = entry;
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break;
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} else if (!device && !deviceName && device_index == entry->device_index) {
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selected = entry;
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break;
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}
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}
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if (selected) {
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devices = g_list_remove (devices, selected);
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GST_DEBUG ("Selected device-index=%d, device-name='%s', device='%s'",
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selected->device_index, selected->device_name, selected->device);
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} else {
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GST_DEBUG ("No matching device found");
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}
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gst_dshow_device_list_free (devices);
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return selected;
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}
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IBaseFilter *
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gst_dshow_create_capture_filter (IMoniker *moniker)
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{
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HRESULT hres = S_OK;
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IBindCtx *lpbc = NULL;
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IBaseFilter *video_cap_filter = NULL;
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g_assert (moniker != NULL);
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hres = CreateBindCtx (0, &lpbc);
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if (SUCCEEDED (hres)) {
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hres = moniker->BindToObject (lpbc, NULL, IID_IBaseFilter,
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(LPVOID *) & video_cap_filter);
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lpbc->Release ();
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}
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return video_cap_filter;
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}
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gchar *
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gst_dshow_getdevice_from_devicename (const GUID * device_category,
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gchar ** device_name, gint * device_index)
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{
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gchar *ret = NULL;
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ICreateDevEnum *devices_enum = NULL;
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IEnumMoniker *enum_moniker = NULL;
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IMoniker *moniker = NULL;
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HRESULT hres = S_FALSE;
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ULONG fetched;
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gboolean bfound = FALSE;
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gint devidx = -1;
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hres = CoCreateInstance (CLSID_SystemDeviceEnum, NULL, CLSCTX_INPROC_SERVER,
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IID_ICreateDevEnum, (void **) &devices_enum);
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if (hres != S_OK) {
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GST_ERROR ("Failed to create System Device Enumerator");
|
|
goto clean;
|
|
}
|
|
|
|
hres = devices_enum->CreateClassEnumerator (*device_category,
|
|
&enum_moniker, 0);
|
|
if (hres != S_OK || !enum_moniker) {
|
|
GST_ERROR ("Failed to create audio/video class device enumerator");
|
|
goto clean;
|
|
}
|
|
|
|
enum_moniker->Reset ();
|
|
|
|
while (hres = enum_moniker->Next (1, &moniker, &fetched), hres == S_OK
|
|
&& !bfound) {
|
|
IPropertyBag *property_bag = NULL;
|
|
hres =
|
|
moniker->BindToStorage (NULL, NULL, IID_IPropertyBag,
|
|
(void **) &property_bag);
|
|
if (SUCCEEDED (hres) && property_bag) {
|
|
VARIANT varFriendlyName;
|
|
VariantInit (&varFriendlyName);
|
|
|
|
hres = property_bag->Read (L"FriendlyName", &varFriendlyName, NULL);
|
|
if (hres == S_OK && varFriendlyName.bstrVal) {
|
|
gchar *friendly_name = wchar_to_gchar (varFriendlyName.bstrVal);
|
|
|
|
devidx++;
|
|
GST_DEBUG ("Found device idx=%d: device-name='%s'",
|
|
devidx, friendly_name);
|
|
|
|
if ((!*device_name || !**device_name) && devidx == *device_index) {
|
|
g_free (*device_name);
|
|
*device_name = g_strdup (friendly_name);
|
|
}
|
|
|
|
if ((*device_name && **device_name)
|
|
&& _stricmp (*device_name, friendly_name) == 0) {
|
|
WCHAR *wszDisplayName = NULL;
|
|
hres = moniker->GetDisplayName (NULL, NULL, &wszDisplayName);
|
|
if (hres == S_OK && wszDisplayName) {
|
|
*device_index = devidx;
|
|
ret = wchar_to_gchar (wszDisplayName);
|
|
CoTaskMemFree (wszDisplayName);
|
|
}
|
|
bfound = TRUE;
|
|
}
|
|
SysFreeString (varFriendlyName.bstrVal);
|
|
}
|
|
property_bag->Release ();
|
|
}
|
|
moniker->Release ();
|
|
}
|
|
|
|
clean:
|
|
if (enum_moniker) {
|
|
enum_moniker->Release ();
|
|
}
|
|
|
|
if (devices_enum) {
|
|
devices_enum->Release ();
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
gboolean
|
|
gst_dshow_show_propertypage (IBaseFilter * base_filter)
|
|
{
|
|
gboolean ret = FALSE;
|
|
ISpecifyPropertyPages *pProp = NULL;
|
|
HRESULT hres =
|
|
base_filter->QueryInterface (IID_ISpecifyPropertyPages, (void **) &pProp);
|
|
if (SUCCEEDED (hres)) {
|
|
/* Get the filter's name and IUnknown pointer. */
|
|
FILTER_INFO FilterInfo;
|
|
CAUUID caGUID;
|
|
IUnknown *pFilterUnk = NULL;
|
|
hres = base_filter->QueryFilterInfo (&FilterInfo);
|
|
base_filter->QueryInterface (IID_IUnknown, (void **) &pFilterUnk);
|
|
|
|
/* Show the page. */
|
|
pProp->GetPages (&caGUID);
|
|
pProp->Release ();
|
|
OleCreatePropertyFrame (GetDesktopWindow (), 0, 0, FilterInfo.achName,
|
|
1, &pFilterUnk, caGUID.cElems, caGUID.pElems, 0, 0, NULL);
|
|
|
|
pFilterUnk->Release ();
|
|
FilterInfo.pGraph->Release ();
|
|
CoTaskMemFree (caGUID.pElems);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
GstVideoFormat
|
|
gst_dshow_guid_to_gst_video_format (AM_MEDIA_TYPE *mediatype)
|
|
{
|
|
if (gst_dshow_check_mediatype (mediatype, MEDIASUBTYPE_I420, FORMAT_VideoInfo))
|
|
return GST_VIDEO_FORMAT_I420;
|
|
|
|
if (gst_dshow_check_mediatype (mediatype, MEDIASUBTYPE_RGB24, FORMAT_VideoInfo))
|
|
return GST_VIDEO_FORMAT_BGR;
|
|
|
|
if (gst_dshow_check_mediatype (mediatype, MEDIASUBTYPE_YUY2, FORMAT_VideoInfo))
|
|
return GST_VIDEO_FORMAT_YUY2;
|
|
|
|
if (gst_dshow_check_mediatype (mediatype, MEDIASUBTYPE_UYVY, FORMAT_VideoInfo))
|
|
return GST_VIDEO_FORMAT_UYVY;
|
|
|
|
if (gst_dshow_check_mediatype (mediatype, MEDIASUBTYPE_RGB32, FORMAT_VideoInfo))
|
|
return GST_VIDEO_FORMAT_BGRx;
|
|
|
|
if (gst_dshow_check_mediatype (mediatype, MEDIASUBTYPE_RGB565, FORMAT_VideoInfo))
|
|
return GST_VIDEO_FORMAT_BGR16;
|
|
|
|
if (gst_dshow_check_mediatype (mediatype, MEDIASUBTYPE_RGB555, FORMAT_VideoInfo))
|
|
return GST_VIDEO_FORMAT_BGR15;
|
|
|
|
if (gst_dshow_check_mediatype (mediatype, MEDIASUBTYPE_RGB8, FORMAT_VideoInfo))
|
|
return GST_VIDEO_FORMAT_GRAY8;
|
|
|
|
return GST_VIDEO_FORMAT_UNKNOWN;
|
|
}
|
|
|
|
gboolean
|
|
gst_dshow_is_pin_connected (IPin * pin)
|
|
{
|
|
IPin *tmp_pin = NULL;
|
|
gboolean res;
|
|
HRESULT hres;
|
|
|
|
g_assert (pin);
|
|
hres = pin->ConnectedTo (&tmp_pin);
|
|
res = (hres != VFW_E_NOT_CONNECTED);
|
|
if (tmp_pin)
|
|
tmp_pin->Release ();
|
|
|
|
return res;
|
|
}
|
|
|
|
GstCaps *
|
|
gst_dshow_new_video_caps (GstVideoFormat video_format, const gchar * name,
|
|
GstCapturePinMediaType * pin_mediatype)
|
|
{
|
|
GstCaps *video_caps = NULL;
|
|
GstStructure *video_structure = NULL;
|
|
gint min_w, max_w;
|
|
gint min_h, max_h;
|
|
gint min_fr, max_fr;
|
|
|
|
/* raw video format */
|
|
switch (video_format) {
|
|
case GST_VIDEO_FORMAT_BGR:
|
|
video_caps = gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("BGR"));
|
|
break;
|
|
case GST_VIDEO_FORMAT_I420:
|
|
video_caps = gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("I420"));
|
|
break;
|
|
case GST_VIDEO_FORMAT_YUY2:
|
|
video_caps = gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("YUY2"));
|
|
break;
|
|
case GST_VIDEO_FORMAT_UYVY:
|
|
video_caps = gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("UYVY"));
|
|
break;
|
|
case GST_VIDEO_FORMAT_BGRx:
|
|
video_caps = gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("BGRx"));
|
|
break;
|
|
case GST_VIDEO_FORMAT_BGR16:
|
|
video_caps = gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("BGR16"));
|
|
break;
|
|
case GST_VIDEO_FORMAT_BGR15:
|
|
video_caps = gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("BGR15"));
|
|
break;
|
|
case GST_VIDEO_FORMAT_GRAY8:
|
|
video_caps = gst_caps_from_string (GST_VIDEO_CAPS_MAKE ("GRAY8"));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
/* other video format */
|
|
if (!video_caps) {
|
|
if (g_ascii_strncasecmp (name, "video/x-dv, systemstream=FALSE", 31) == 0) {
|
|
video_caps = gst_caps_new_simple ("video/x-dv",
|
|
"systemstream", G_TYPE_BOOLEAN, FALSE,
|
|
"format", G_TYPE_STRING, "dvsd",
|
|
NULL);
|
|
} else if (g_ascii_strncasecmp (name, "video/x-dv, systemstream=TRUE", 31) == 0) {
|
|
video_caps = gst_caps_new_simple ("video/x-dv",
|
|
"systemstream", G_TYPE_BOOLEAN, TRUE, NULL);
|
|
return video_caps;
|
|
} else if (g_ascii_strncasecmp (name, "image/jpeg", 10) == 0) {
|
|
video_caps = gst_caps_new_simple ("image/jpeg", NULL);
|
|
} else if (g_ascii_strncasecmp (name, "video/x-h264", 12) == 0) {
|
|
video_caps = gst_caps_new_simple ("video/x-h264", NULL);
|
|
}
|
|
}
|
|
|
|
if (!video_caps)
|
|
return NULL;
|
|
|
|
video_structure = gst_caps_get_structure (video_caps, 0);
|
|
|
|
/* Hope GST_TYPE_INT_RANGE_STEP will exits in future gstreamer releases */
|
|
/* because we could use : */
|
|
/* "width", GST_TYPE_INT_RANGE_STEP, video_default->minWidth, video_default->maxWidth, video_default->granularityWidth */
|
|
/* instead of : */
|
|
/* "width", GST_TYPE_INT_RANGE, video_default->minWidth, video_default->maxWidth */
|
|
|
|
/* For framerate we do not need a step (granularity) because */
|
|
/* "The IAMStreamConfig::SetFormat method will set the frame rate to the closest */
|
|
/* value that the filter supports" as it said in the VIDEO_STREAM_CONFIG_CAPS dshwo doc */
|
|
|
|
min_w = pin_mediatype->vscc.MinOutputSize.cx;
|
|
max_w = pin_mediatype->vscc.MaxOutputSize.cx;
|
|
min_h = pin_mediatype->vscc.MinOutputSize.cy;
|
|
max_h = pin_mediatype->vscc.MaxOutputSize.cy;
|
|
min_fr = (gint) (10000000 / pin_mediatype->vscc.MaxFrameInterval);
|
|
max_fr = (gint)(10000000 / pin_mediatype->vscc.MinFrameInterval);
|
|
|
|
if (min_w == max_w)
|
|
gst_structure_set (video_structure, "width", G_TYPE_INT, min_w, NULL);
|
|
else
|
|
gst_structure_set (video_structure,
|
|
"width", GST_TYPE_INT_RANGE, min_w, max_w, NULL);
|
|
|
|
if (min_h == max_h)
|
|
gst_structure_set (video_structure, "height", G_TYPE_INT, min_h, NULL);
|
|
else
|
|
gst_structure_set (video_structure,
|
|
"height", GST_TYPE_INT_RANGE, min_h, max_h, NULL);
|
|
|
|
if (min_fr == max_fr)
|
|
gst_structure_set (video_structure, "framerate",
|
|
GST_TYPE_FRACTION, min_fr, 1, NULL);
|
|
else
|
|
gst_structure_set (video_structure, "framerate",
|
|
GST_TYPE_FRACTION_RANGE, min_fr, 1, max_fr, 1, NULL);
|
|
|
|
return video_caps;
|
|
}
|
|
|
|
bool gst_dshow_configure_latency (IPin *pCapturePin, guint bufSizeMS)
|
|
{
|
|
HRESULT hr;
|
|
ALLOCATOR_PROPERTIES alloc_prop;
|
|
IAMBufferNegotiation * pNeg = NULL;
|
|
hr = pCapturePin->QueryInterface(IID_IAMBufferNegotiation, (void **)&pNeg);
|
|
|
|
if(!SUCCEEDED (hr))
|
|
return FALSE;
|
|
|
|
alloc_prop.cbAlign = -1; // -1 means no preference.
|
|
alloc_prop.cbBuffer = bufSizeMS;
|
|
alloc_prop.cbPrefix = -1;
|
|
alloc_prop.cBuffers = -1;
|
|
hr = pNeg->SuggestAllocatorProperties (&alloc_prop);
|
|
return SUCCEEDED (hr);
|
|
}
|