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gstreamer/sys/dshowdecwrapper/gstdshowvideodec.c
Sebastian Dröge 32c43f884e sys/dshowdecwrapper/: Chain up dispose methods properly. Fixes bug #515970. 
Original commit message from CVS:
* sys/dshowdecwrapper/gstdshowaudiodec.c:
(gst_dshowaudiodec_dispose):
* sys/dshowdecwrapper/gstdshowvideodec.c:
(gst_dshowvideodec_dispose):
Chain up dispose methods properly. Fixes bug #515970.
2008-02-12 11:08:27 +00:00

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/*
* GStreamer DirectShow codecs wrapper
* Copyright <2006, 2007, 2008> Fluendo <gstreamer@fluendo.com>
* Copyright <2006, 2007, 2008> Pioneers of the Inevitable <songbird@songbirdnest.com>
* Copyright <2007,2008> Sebastien Moutte <sebastien@moutte.net>
*
* 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.
*
* Alternatively, the contents of this file may be used under the
* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
* which case the following provisions apply instead of the ones
* mentioned above:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstdshowvideodec.h"
GST_DEBUG_CATEGORY_STATIC (dshowvideodec_debug);
#define GST_CAT_DEFAULT dshowvideodec_debug
GST_BOILERPLATE (GstDshowVideoDec, gst_dshowvideodec, GstElement,
GST_TYPE_ELEMENT);
static const CodecEntry *tmp;
static void gst_dshowvideodec_dispose (GObject * object);
static GstStateChangeReturn gst_dshowvideodec_change_state
(GstElement * element, GstStateChange transition);
/* sink pad overwrites */
static gboolean gst_dshowvideodec_sink_setcaps (GstPad * pad, GstCaps * caps);
static gboolean gst_dshowvideodec_sink_event (GstPad * pad, GstEvent * event);
static GstFlowReturn gst_dshowvideodec_chain (GstPad * pad, GstBuffer * buffer);
/* src pad overwrites */
static GstCaps *gst_dshowvideodec_src_getcaps (GstPad * pad);
static gboolean gst_dshowvideodec_src_setcaps (GstPad * pad, GstCaps * caps);
/* callback called by our directshow fake sink when it receives a buffer */
static gboolean gst_dshowvideodec_push_buffer (byte * buffer, long size,
byte * src_object, UINT64 start, UINT64 stop);
/* utils */
static gboolean gst_dshowvideodec_create_graph_and_filters (GstDshowVideoDec *
vdec);
static gboolean gst_dshowvideodec_destroy_graph_and_filters (GstDshowVideoDec *
vdec);
static gboolean gst_dshowvideodec_flush (GstDshowVideoDec * adec);
static gboolean gst_dshowvideodec_get_filter_output_format (GstDshowVideoDec *
vdec, GUID * subtype, VIDEOINFOHEADER ** format, guint * size);
#define GUID_MEDIATYPE_VIDEO {0x73646976, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_WMVV1 {0x31564d57, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_WMVV2 {0x32564d57, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_WMVV3 {0x33564d57, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_WMVP {0x50564d57, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_WMVA {0x41564d57, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_CVID {0x64697663, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_MP4S {0x5334504d, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_MP42 {0x3234504d, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_MP43 {0x3334504d, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_M4S2 {0x3253344d, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_XVID {0x44495658, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_DX50 {0x30355844, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_DIVX {0x58564944, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_DIV3 {0x33564944, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_MPG4 {0x3447504d, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_MPEG1Payload {0xe436eb81, 0x524f, 0x11ce, {0x9f, 0x53, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70}}
/* output types */
#define GUID_MEDIASUBTYPE_YUY2 {0x32595559, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_YV12 {0x32315659, 0x0000, 0x0010, { 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
#define GUID_MEDIASUBTYPE_RGB32 {0xe436eb7e, 0x524f, 0x11ce, { 0x9f, 0x53, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70 }}
#define GUID_MEDIASUBTYPE_RGB565 {0xe436eb7b, 0x524f, 0x11ce, { 0x9f, 0x53, 0x00, 0x20, 0xaf, 0x0b, 0xa7, 0x70 }}
/* video codecs array */
static const CodecEntry video_dec_codecs[] = {
{"dshowvdec_wmv1",
"Windows Media Video 7",
"DMO",
GST_MAKE_FOURCC ('W', 'M', 'V', '1'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_WMVV1,
"video/x-wmv, wmvversion = (int) 1",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"},
{"dshowvdec_wmv2",
"Windows Media Video 8",
"DMO",
GST_MAKE_FOURCC ('W', 'M', 'V', '2'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_WMVV2,
"video/x-wmv, wmvversion = (int) 2",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"},
{"dshowvdec_wmv3",
"Windows Media Video 9",
"DMO",
GST_MAKE_FOURCC ('W', 'M', 'V', '3'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_WMVV3,
"video/x-wmv, wmvversion = (int) 3, " "format = (fourcc) WMV3",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"},
{"dshowvdec_wmvp",
"Windows Media Video 9 Image",
"DMO",
GST_MAKE_FOURCC ('W', 'M', 'V', 'P'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_WMVP,
"video/x-wmv, wmvversion = (int) 3, " "format = (fourcc) WMVP",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"},
{"dshowvdec_wmva",
"Windows Media Video 9 Advanced",
"DMO",
GST_MAKE_FOURCC ('W', 'M', 'V', 'A'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_WMVA,
"video/x-wmv, wmvversion = (int) 3, " "format = (fourcc) WMVA",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"},
{"dshowvdec_cinepak",
"Cinepack",
"AVI Decompressor",
0x64697663,
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_CVID,
"video/x-cinepak",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_RGB32,
"video/x-raw-rgb, bpp=(int)32, depth=(int)24, "
"endianness=(int)4321, red_mask=(int)65280, "
"green_mask=(int)16711680, blue_mask=(int)-16777216"},
{"dshowvdec_msmpeg41",
"Microsoft ISO MPEG-4 version 1",
"DMO",
GST_MAKE_FOURCC ('M', 'P', '4', 'S'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_MP4S,
"video/x-msmpeg, msmpegversion=(int)41",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"},
{"dshowvdec_msmpeg42",
"Microsoft ISO MPEG-4 version 2",
"DMO",
GST_MAKE_FOURCC ('M', 'P', '4', '2'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_MP42,
"video/x-msmpeg, msmpegversion=(int)42",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"},
{"dshowvdec_msmpeg43",
"Microsoft ISO MPEG-4 version 3",
"DMO",
GST_MAKE_FOURCC ('M', 'P', '4', '3'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_MP43,
"video/x-msmpeg, msmpegversion=(int)43",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"},
{"dshowvdec_msmpeg4",
"Microsoft ISO MPEG-4 version 1.1",
"DMO",
GST_MAKE_FOURCC ('M', '4', 'S', '2'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_M4S2,
"video/x-msmpeg, msmpegversion=(int)4",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"},
{"dshowvdec_mpeg1",
"MPEG-1 Video",
"MPEG Video Decoder",
GST_MAKE_FOURCC ('M', 'P', 'E', 'G'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_MPEG1Payload,
"video/mpeg, mpegversion= (int) 1, "
"parsed= (boolean) true, " "systemstream= (boolean) false",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"},
{"dshowvdec_xvid",
"XVID Video",
"ffdshow",
GST_MAKE_FOURCC ('X', 'V', 'I', 'D'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_XVID,
"video/x-xvid",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"},
{"dshowvdec_divx5",
"DIVX 5.0 Video",
"ffdshow",
GST_MAKE_FOURCC ('D', 'X', '5', '0'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_DX50,
"video/x-divx, divxversion=(int)5",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"},
{"dshowvdec_divx4",
"DIVX 4.0 Video",
"ffdshow",
GST_MAKE_FOURCC ('D', 'I', 'V', 'X'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_DIVX,
"video/x-divx, divxversion=(int)4",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"},
{"dshowvdec_divx3",
"DIVX 3.0 Video",
"ffdshow",
GST_MAKE_FOURCC ('D', 'I', 'V', '3'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_DIV3,
"video/x-divx, divxversion=(int)3",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"}
/*,
{ "dshowvdec_mpeg4",
"DMO",
GST_MAKE_FOURCC ('M', 'P', 'G', '4'),
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_MPG4,
"video/mpeg, msmpegversion=(int)4",
GUID_MEDIATYPE_VIDEO, GUID_MEDIASUBTYPE_YUY2,
"video/x-raw-yuv, format=(fourcc)YUY2"
} */
};
static void
gst_dshowvideodec_base_init (GstDshowVideoDecClass * klass)
{
GstPadTemplate *src, *sink;
GstCaps *srccaps, *sinkcaps;
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GstElementDetails details;
klass->entry = tmp;
details.longname = g_strdup_printf ("DirectShow %s Decoder Wrapper",
tmp->element_longname);
details.klass = g_strdup ("Codec/Decoder/Video");
details.description = g_strdup_printf ("DirectShow %s Decoder Wrapper",
tmp->element_longname);
details.author = "Sebastien Moutte <sebastien@moutte.net>";
gst_element_class_set_details (element_class, &details);
g_free (details.longname);
g_free (details.klass);
g_free (details.description);
sinkcaps = gst_caps_from_string (tmp->sinkcaps);
gst_caps_set_simple (sinkcaps,
"width", GST_TYPE_INT_RANGE, 16, 4096,
"height", GST_TYPE_INT_RANGE, 16, 4096,
"framerate", GST_TYPE_FRACTION_RANGE, 0, 1, G_MAXINT, 1, NULL);
srccaps = gst_caps_from_string (tmp->srccaps);
sink = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, sinkcaps);
src = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, srccaps);
gst_element_class_add_pad_template (element_class, src);
gst_element_class_add_pad_template (element_class, sink);
}
static void
gst_dshowvideodec_class_init (GstDshowVideoDecClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
gobject_class->dispose = GST_DEBUG_FUNCPTR (gst_dshowvideodec_dispose);
gstelement_class->change_state =
GST_DEBUG_FUNCPTR (gst_dshowvideodec_change_state);
if (!parent_class)
parent_class = g_type_class_ref (GST_TYPE_ELEMENT);
if (!dshowvideodec_debug) {
GST_DEBUG_CATEGORY_INIT (dshowvideodec_debug, "dshowvideodec", 0,
"Directshow filter video decoder");
}
}
static void
gst_dshowvideodec_init (GstDshowVideoDec * vdec,
GstDshowVideoDecClass * vdec_class)
{
GstElementClass *element_class = GST_ELEMENT_GET_CLASS (vdec);
/* setup pads */
vdec->sinkpad =
gst_pad_new_from_template (gst_element_class_get_pad_template
(element_class, "sink"), "sink");
gst_pad_set_setcaps_function (vdec->sinkpad, gst_dshowvideodec_sink_setcaps);
gst_pad_set_event_function (vdec->sinkpad, gst_dshowvideodec_sink_event);
gst_pad_set_chain_function (vdec->sinkpad, gst_dshowvideodec_chain);
gst_element_add_pad (GST_ELEMENT (vdec), vdec->sinkpad);
vdec->srcpad =
gst_pad_new_from_template (gst_element_class_get_pad_template
(element_class, "src"), "src");
/* needed to implement caps negociation on our src pad */
/* gst_pad_set_getcaps_function (vdec->srcpad, gst_dshowvideodec_src_getcaps);
gst_pad_set_setcaps_function (vdec->srcpad, gst_dshowvideodec_src_setcaps);*/
gst_element_add_pad (GST_ELEMENT (vdec), vdec->srcpad);
vdec->srcfilter = NULL;
vdec->decfilter = NULL;
vdec->sinkfilter = NULL;
vdec->filtergraph = NULL;
vdec->mediafilter = NULL;
vdec->gstdshowsrcfilter = NULL;
vdec->srccaps = NULL;
vdec->segment = gst_segment_new ();
CoInitializeEx (NULL, COINIT_MULTITHREADED);
}
static void
gst_dshowvideodec_dispose (GObject * object)
{
GstDshowVideoDec *vdec = (GstDshowVideoDec *) (object);
if (vdec->segment) {
gst_segment_free (vdec->segment);
vdec->segment = NULL;
}
CoUninitialize ();
G_OBJECT_CLASS (parent_class)->dispose (object);
}
static GstStateChangeReturn
gst_dshowvideodec_change_state (GstElement * element, GstStateChange transition)
{
GstDshowVideoDec *vdec = (GstDshowVideoDec *) (element);
switch (transition) {
case GST_STATE_CHANGE_NULL_TO_READY:
if (!gst_dshowvideodec_create_graph_and_filters (vdec))
return GST_STATE_CHANGE_FAILURE;
break;
case GST_STATE_CHANGE_READY_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_PLAYING:
break;
case GST_STATE_CHANGE_PLAYING_TO_PAUSED:
break;
case GST_STATE_CHANGE_PAUSED_TO_READY:
break;
case GST_STATE_CHANGE_READY_TO_NULL:
if (!gst_dshowvideodec_destroy_graph_and_filters (vdec))
return GST_STATE_CHANGE_FAILURE;
break;
default:
break;
}
return GST_ELEMENT_CLASS (parent_class)->change_state (element, transition);
}
static gboolean
gst_dshowvideodec_sink_setcaps (GstPad * pad, GstCaps * caps)
{
gboolean ret = FALSE;
HRESULT hres;
GstStructure *s = gst_caps_get_structure (caps, 0);
GstDshowVideoDec *vdec = (GstDshowVideoDec *) gst_pad_get_parent (pad);
GstDshowVideoDecClass *klass =
(GstDshowVideoDecClass *) G_OBJECT_GET_CLASS (vdec);
GstBuffer *extradata = NULL;
const GValue *v = NULL;
gint size = 0;
GstCaps *caps_out;
AM_MEDIA_TYPE output_mediatype, input_mediatype;
VIDEOINFOHEADER *input_vheader = NULL, *output_vheader = NULL;
IPin *output_pin = NULL, *input_pin = NULL;
IGstDshowInterface *gstdshowinterface = NULL;
const GValue *fps;
/* read data */
if (!gst_structure_get_int (s, "width", &vdec->width) ||
!gst_structure_get_int (s, "height", &vdec->height)) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("error getting video width or height from caps"), (NULL));
goto end;
}
fps = gst_structure_get_value (s, "framerate");
if (!fps) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("error getting video framerate from caps"), (NULL));
goto end;
}
vdec->fps_n = gst_value_get_fraction_numerator (fps);
vdec->fps_d = gst_value_get_fraction_denominator (fps);
if ((v = gst_structure_get_value (s, "codec_data")))
extradata = gst_value_get_buffer (v);
/* define the input type format */
memset (&input_mediatype, 0, sizeof (AM_MEDIA_TYPE));
input_mediatype.majortype = klass->entry->input_majortype;
input_mediatype.subtype = klass->entry->input_subtype;
input_mediatype.bFixedSizeSamples = FALSE;
input_mediatype.bTemporalCompression = TRUE;
if (strstr (klass->entry->sinkcaps, "video/mpeg, mpegversion= (int) 1")) {
size =
sizeof (MPEG1VIDEOINFO) + (extradata ? GST_BUFFER_SIZE (extradata) -
1 : 0);
input_vheader = g_malloc0 (size);
input_vheader->bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
if (extradata) {
MPEG1VIDEOINFO *mpeg_info = (MPEG1VIDEOINFO *) input_vheader;
memcpy (mpeg_info->bSequenceHeader,
GST_BUFFER_DATA (extradata), GST_BUFFER_SIZE (extradata));
mpeg_info->cbSequenceHeader = GST_BUFFER_SIZE (extradata);
}
input_mediatype.formattype = FORMAT_MPEGVideo;
} else {
size =
sizeof (VIDEOINFOHEADER) +
(extradata ? GST_BUFFER_SIZE (extradata) : 0);
input_vheader = g_malloc0 (size);
input_vheader->bmiHeader.biSize = sizeof (BITMAPINFOHEADER);
if (extradata) { /* Codec data is appended after our header */
memcpy (((guchar *) input_vheader) + sizeof (VIDEOINFOHEADER),
GST_BUFFER_DATA (extradata), GST_BUFFER_SIZE (extradata));
input_vheader->bmiHeader.biSize += GST_BUFFER_SIZE (extradata);
}
input_mediatype.formattype = FORMAT_VideoInfo;
}
input_vheader->rcSource.top = input_vheader->rcSource.left = 0;
input_vheader->rcSource.right = vdec->width;
input_vheader->rcSource.bottom = vdec->height;
input_vheader->rcTarget = input_vheader->rcSource;
input_vheader->bmiHeader.biWidth = vdec->width;
input_vheader->bmiHeader.biHeight = vdec->height;
input_vheader->bmiHeader.biPlanes = 1;
input_vheader->bmiHeader.biBitCount = 16;
input_vheader->bmiHeader.biCompression = klass->entry->format;
input_vheader->bmiHeader.biSizeImage =
(vdec->width * vdec->height) * (input_vheader->bmiHeader.biBitCount / 8);
input_mediatype.cbFormat = size;
input_mediatype.pbFormat = (BYTE *) input_vheader;
input_mediatype.lSampleSize = input_vheader->bmiHeader.biSizeImage;
hres = IBaseFilter_QueryInterface (vdec->srcfilter, &IID_IGstDshowInterface,
(void **) &gstdshowinterface);
if (hres != S_OK || !gstdshowinterface) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get IGstDshowInterface interface from dshow fakesrc filter (error=%d)",
hres), (NULL));
goto end;
}
/* save a reference to IGstDshowInterface to use it processing functions */
if (!vdec->gstdshowsrcfilter) {
vdec->gstdshowsrcfilter = gstdshowinterface;
IBaseFilter_AddRef (vdec->gstdshowsrcfilter);
}
IGstDshowInterface_gst_set_media_type (gstdshowinterface, &input_mediatype);
IGstDshowInterface_Release (gstdshowinterface);
gstdshowinterface = NULL;
/* set the sample size for fakesrc filter to the output buffer size */
IGstDshowInterface_gst_set_sample_size (vdec->gstdshowsrcfilter,
input_mediatype.lSampleSize);
/* connect our fake src to decoder */
gst_dshow_get_pin_from_filter (vdec->srcfilter, PINDIR_OUTPUT, &output_pin);
if (!output_pin) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get output pin from our directshow fakesrc filter"), (NULL));
goto end;
}
gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_INPUT, &input_pin);
if (!input_pin) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get input pin from decoder filter"), (NULL));
goto end;
}
hres =
IFilterGraph_ConnectDirect (vdec->filtergraph, output_pin, input_pin,
NULL);
if (hres != S_OK) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't connect fakesrc with decoder (error=%d)", hres), (NULL));
goto end;
}
IPin_Release (input_pin);
IPin_Release (output_pin);
input_pin = NULL;
output_pin = NULL;
/* get decoder output video format */
if (!gst_dshowvideodec_get_filter_output_format (vdec,
&klass->entry->output_subtype, &output_vheader, &size)) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get decoder output video format"), (NULL));
goto end;
}
memset (&output_mediatype, 0, sizeof (AM_MEDIA_TYPE));
output_mediatype.majortype = klass->entry->output_majortype;
output_mediatype.subtype = klass->entry->output_subtype;
output_mediatype.bFixedSizeSamples = TRUE;
output_mediatype.bTemporalCompression = FALSE;
output_mediatype.lSampleSize = output_vheader->bmiHeader.biSizeImage;
output_mediatype.formattype = FORMAT_VideoInfo;
output_mediatype.cbFormat = size;
output_mediatype.pbFormat = (char *) output_vheader;
hres = IBaseFilter_QueryInterface (vdec->sinkfilter, &IID_IGstDshowInterface,
(void **) &gstdshowinterface);
if (hres != S_OK || !gstdshowinterface) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get IGstDshowInterface interface from dshow fakesink filter (error=%d)",
hres), (NULL));
goto end;
}
IGstDshowInterface_gst_set_media_type (gstdshowinterface, &output_mediatype);
IGstDshowInterface_gst_set_buffer_callback (gstdshowinterface,
gst_dshowvideodec_push_buffer, (byte *) vdec);
IGstDshowInterface_Release (gstdshowinterface);
gstdshowinterface = NULL;
/* connect decoder to our fake sink */
gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT, &output_pin);
if (!output_pin) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get output pin from our decoder filter"), (NULL));
goto end;
}
gst_dshow_get_pin_from_filter (vdec->sinkfilter, PINDIR_INPUT, &input_pin);
if (!input_pin) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't get input pin from our directshow fakesink filter"), (NULL));
goto end;
}
hres =
IFilterGraph_ConnectDirect (vdec->filtergraph, output_pin, input_pin,
&output_mediatype);
if (hres != S_OK) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't connect decoder with fakesink (error=%d)", hres), (NULL));
goto end;
}
/* negotiate output */
caps_out = gst_caps_from_string (klass->entry->srccaps);
gst_caps_set_simple (caps_out,
"width", G_TYPE_INT, vdec->width,
"height", G_TYPE_INT, vdec->height,
"framerate", GST_TYPE_FRACTION, vdec->fps_n, vdec->fps_d, NULL);
if (!gst_pad_set_caps (vdec->srcpad, caps_out)) {
gst_caps_unref (caps_out);
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Failed to negotiate output"), (NULL));
goto end;
}
gst_caps_unref (caps_out);
hres = IMediaFilter_Run (vdec->mediafilter, -1);
if (hres != S_OK) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("Can't run the directshow graph (error=%d)", hres), (NULL));
goto end;
}
ret = TRUE;
end:
gst_object_unref (vdec);
if (input_vheader)
g_free (input_vheader);
if (gstdshowinterface)
IGstDshowInterface_Release (gstdshowinterface);
if (input_pin)
IPin_Release (input_pin);
if (output_pin)
IPin_Release (output_pin);
return ret;
}
static gboolean
gst_dshowvideodec_sink_event (GstPad * pad, GstEvent * event)
{
gboolean ret = TRUE;
GstDshowVideoDec *vdec = (GstDshowVideoDec *) gst_pad_get_parent (pad);
switch (GST_EVENT_TYPE (event)) {
case GST_EVENT_FLUSH_STOP:
gst_dshowvideodec_flush (vdec);
ret = gst_pad_event_default (pad, event);
break;
case GST_EVENT_NEWSEGMENT:
{
GstFormat format;
gdouble rate;
gint64 start, stop, time;
gboolean update;
gst_event_parse_new_segment (event, &update, &rate, &format, &start,
&stop, &time);
/* save the new segment in our local current segment */
gst_segment_set_newsegment (vdec->segment, update, rate, format, start,
stop, time);
GST_CAT_DEBUG_OBJECT (dshowvideodec_debug, vdec,
"new segment received => start=%" GST_TIME_FORMAT " stop=%"
GST_TIME_FORMAT, GST_TIME_ARGS (vdec->segment->start),
GST_TIME_ARGS (vdec->segment->stop));
if (update) {
GST_CAT_DEBUG_OBJECT (dshowvideodec_debug, vdec,
"closing current segment flushing..");
gst_dshowvideodec_flush (vdec);
}
ret = gst_pad_event_default (pad, event);
break;
}
default:
ret = gst_pad_event_default (pad, event);
break;
}
return ret;
}
static GstFlowReturn
gst_dshowvideodec_chain (GstPad * pad, GstBuffer * buffer)
{
GstFlowReturn ret = GST_FLOW_OK;
GstDshowVideoDec *vdec = (GstDshowVideoDec *) gst_pad_get_parent (pad);
gboolean discount = FALSE;
GstClockTime stop;
if (!vdec->gstdshowsrcfilter) {
/* we are not setup */
ret = GST_FLOW_WRONG_STATE;
goto beach;
}
/* check if duration is valid and use duration only when it's valid
/* because dshow is not decoding frames having stop smaller than start */
if (GST_BUFFER_DURATION_IS_VALID (buffer)) {
stop = GST_BUFFER_TIMESTAMP (buffer) + GST_BUFFER_DURATION (buffer);
} else {
stop = GST_BUFFER_TIMESTAMP (buffer);
}
GST_CAT_LOG_OBJECT (dshowvideodec_debug, vdec,
"chain (size %d)=> pts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT,
GST_BUFFER_SIZE (buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
GST_TIME_ARGS (stop));
/* if the incoming buffer has discont flag set => flush decoder data */
if (buffer && GST_BUFFER_FLAG_IS_SET (buffer, GST_BUFFER_FLAG_DISCONT)) {
GST_CAT_DEBUG_OBJECT (dshowvideodec_debug, vdec,
"this buffer has a DISCONT flag (%" GST_TIME_FORMAT "), flushing",
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
gst_dshowvideodec_flush (vdec);
discount = TRUE;
}
/* push the buffer to the directshow decoder */
IGstDshowInterface_gst_push_buffer (vdec->gstdshowsrcfilter,
GST_BUFFER_DATA (buffer), GST_BUFFER_TIMESTAMP (buffer), stop,
GST_BUFFER_SIZE (buffer), discount);
beach:
gst_buffer_unref (buffer);
gst_object_unref (vdec);
return ret;
}
static gboolean
gst_dshowvideodec_push_buffer (byte * buffer, long size, byte * src_object,
UINT64 start, UINT64 stop)
{
GstDshowVideoDec *vdec = (GstDshowVideoDec *) src_object;
GstDshowVideoDecClass *klass =
(GstDshowVideoDecClass *) G_OBJECT_GET_CLASS (vdec);
GstBuffer *buf = NULL;
gboolean in_seg = FALSE;
gint64 clip_start = 0, clip_stop = 0;
/* check if this buffer is in our current segment */
in_seg = gst_segment_clip (vdec->segment, GST_FORMAT_TIME,
start, stop, &clip_start, &clip_stop);
/* if the buffer is out of segment do not push it downstream */
if (!in_seg) {
GST_CAT_DEBUG_OBJECT (dshowvideodec_debug, vdec,
"buffer is out of segment, start %" GST_TIME_FORMAT " stop %"
GST_TIME_FORMAT, GST_TIME_ARGS (start), GST_TIME_ARGS (stop));
return FALSE;
}
/* buffer is in our segment allocate a new out buffer and clip its timestamps */
gst_pad_alloc_buffer (vdec->srcpad, GST_BUFFER_OFFSET_NONE,
size, GST_PAD_CAPS (vdec->srcpad), &buf);
if (!buf) {
GST_CAT_WARNING_OBJECT (dshowvideodec_debug, vdec,
"can't not allocate a new GstBuffer");
return FALSE;
}
/* set buffer properties */
GST_BUFFER_SIZE (buf) = size;
GST_BUFFER_TIMESTAMP (buf) = clip_start;
GST_BUFFER_DURATION (buf) = clip_stop - clip_start;
if (strstr (klass->entry->srccaps, "rgb")) {
/* FOR RGB directshow decoder will return bottom-up BITMAP
* There is probably a way to get top-bottom video frames from
* the decoder...
*/
gint line = 0;
guint stride = vdec->width * 4;
for (; line < vdec->height; line++) {
memcpy (GST_BUFFER_DATA (buf) + (line * stride),
buffer + (size - ((line + 1) * (stride))), stride);
}
} else {
memcpy (GST_BUFFER_DATA (buf), buffer, size);
}
GST_CAT_LOG_OBJECT (dshowvideodec_debug, vdec,
"push_buffer (size %d)=> pts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT
" duration %" GST_TIME_FORMAT, size,
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf)),
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buf) + GST_BUFFER_DURATION (buf)),
GST_TIME_ARGS (GST_BUFFER_DURATION (buf)));
/* push the buffer downstream */
gst_pad_push (vdec->srcpad, buf);
return TRUE;
}
static GstCaps *
gst_dshowvideodec_src_getcaps (GstPad * pad)
{
GstDshowVideoDec *vdec = (GstDshowVideoDec *) gst_pad_get_parent (pad);
if (!vdec->srccaps)
vdec->srccaps = gst_caps_new_empty ();
if (vdec->decfilter) {
IPin *output_pin = NULL;
IEnumMediaTypes *enum_mediatypes = NULL;
HRESULT hres;
ULONG fetched;
if (!gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT,
&output_pin)) {
GST_ELEMENT_ERROR (vdec, STREAM, FAILED,
("failed getting ouput pin from the decoder"), (NULL));
return NULL;
}
hres = IPin_EnumMediaTypes (output_pin, &enum_mediatypes);
if (hres == S_OK && enum_mediatypes) {
AM_MEDIA_TYPE *mediatype = NULL;
IEnumMediaTypes_Reset (enum_mediatypes);
while (hres =
IEnumMoniker_Next (enum_mediatypes, 1, &mediatype, &fetched),
hres == S_OK) {
RPC_STATUS rpcstatus;
VIDEOINFOHEADER *video_info;
GstCaps *mediacaps = NULL;
/* RGB24 */
if ((UuidCompare (&mediatype->subtype, &MEDIASUBTYPE_RGB24,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)
&& (UuidCompare (&mediatype->formattype, &FORMAT_VideoInfo,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)) {
video_info = (VIDEOINFOHEADER *) mediatype->pbFormat;
/* ffmpegcolorspace handles RGB24 in BIG_ENDIAN */
mediacaps = gst_caps_new_simple ("video/x-raw-rgb",
"bpp", G_TYPE_INT, 24,
"depth", G_TYPE_INT, 24,
"width", G_TYPE_INT, video_info->bmiHeader.biWidth,
"height", G_TYPE_INT, video_info->bmiHeader.biHeight,
"framerate", GST_TYPE_FRACTION,
(int) (10000000 / video_info->AvgTimePerFrame), 1, "endianness",
G_TYPE_INT, G_BIG_ENDIAN, "red_mask", G_TYPE_INT, 255,
"green_mask", G_TYPE_INT, 65280, "blue_mask", G_TYPE_INT,
16711680, NULL);
if (mediacaps) {
vdec->mediatypes = g_list_append (vdec->mediatypes, mediatype);
gst_caps_append (vdec->srccaps, mediacaps);
} else {
gst_dshow_free_mediatype (mediatype);
}
} else {
gst_dshow_free_mediatype (mediatype);
}
}
IEnumMediaTypes_Release (enum_mediatypes);
}
if (output_pin) {
IPin_Release (output_pin);
}
}
if (vdec->srccaps)
return gst_caps_ref (vdec->srccaps);
return NULL;
}
static gboolean
gst_dshowvideodec_src_setcaps (GstPad * pad, GstCaps * caps)
{
gboolean ret = FALSE;
return ret;
}
static gboolean
gst_dshowvideodec_flush (GstDshowVideoDec * vdec)
{
if (!vdec->gstdshowsrcfilter)
return FALSE;
/* flush dshow decoder and reset timestamp */
IGstDshowInterface_gst_flush (vdec->gstdshowsrcfilter);
return TRUE;
}
static gboolean
gst_dshowvideodec_get_filter_output_format (GstDshowVideoDec * vdec,
GUID * subtype, VIDEOINFOHEADER ** format, guint * size)
{
IPin *output_pin = NULL;
IEnumMediaTypes *enum_mediatypes = NULL;
HRESULT hres;
ULONG fetched;
BOOL ret = FALSE;
if (!vdec->decfilter)
return FALSE;
if (!gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT,
&output_pin)) {
GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION,
("failed getting ouput pin from the decoder"), (NULL));
return FALSE;
}
hres = IPin_EnumMediaTypes (output_pin, &enum_mediatypes);
if (hres == S_OK && enum_mediatypes) {
AM_MEDIA_TYPE *mediatype = NULL;
IEnumMediaTypes_Reset (enum_mediatypes);
while (hres =
IEnumMoniker_Next (enum_mediatypes, 1, &mediatype, &fetched),
hres == S_OK) {
RPC_STATUS rpcstatus;
if ((UuidCompare (&mediatype->subtype, subtype, &rpcstatus) == 0
&& rpcstatus == RPC_S_OK) &&
(UuidCompare (&mediatype->formattype, &FORMAT_VideoInfo,
&rpcstatus) == 0 && rpcstatus == RPC_S_OK)) {
*size = mediatype->cbFormat;
*format = g_malloc0 (*size);
memcpy (*format, mediatype->pbFormat, *size);
ret = TRUE;
}
gst_dshow_free_mediatype (mediatype);
if (ret)
break;
}
IEnumMediaTypes_Release (enum_mediatypes);
}
if (output_pin) {
IPin_Release (output_pin);
}
return ret;
}
static gboolean
gst_dshowvideodec_create_graph_and_filters (GstDshowVideoDec * vdec)
{
HRESULT hres = S_FALSE;
GstDshowVideoDecClass *klass =
(GstDshowVideoDecClass *) G_OBJECT_GET_CLASS (vdec);
/* create the filter graph manager object */
hres = CoCreateInstance (&CLSID_FilterGraph, NULL, CLSCTX_INPROC,
&IID_IFilterGraph, (LPVOID *) & vdec->filtergraph);
if (hres != S_OK || !vdec->filtergraph) {
GST_ELEMENT_ERROR (vdec, STREAM, FAILED, ("Can't create an instance "
"of the directshow graph manager (error=%d)", hres), (NULL));
goto error;
}
hres = IFilterGraph_QueryInterface (vdec->filtergraph, &IID_IMediaFilter,
(void **) &vdec->mediafilter);
if (hres != S_OK || !vdec->mediafilter) {
GST_ELEMENT_ERROR (vdec, STREAM, FAILED,
("Can't get IMediacontrol interface "
"from the graph manager (error=%d)", hres), (NULL));
goto error;
}
/* create fake src filter */
hres = CoCreateInstance (&CLSID_DshowFakeSrc, NULL, CLSCTX_INPROC,
&IID_IBaseFilter, (LPVOID *) & vdec->srcfilter);
if (hres != S_OK || !vdec->srcfilter) {
GST_ELEMENT_ERROR (vdec, STREAM, FAILED, ("Can't create an instance "
"of the directshow fakesrc (error=%d)", hres), (NULL));
goto error;
}
/* search a decoder filter and create it */
if (!gst_dshow_find_filter (klass->entry->input_majortype,
klass->entry->input_subtype,
klass->entry->output_majortype,
klass->entry->output_subtype,
klass->entry->prefered_filter_substring, &vdec->decfilter)) {
GST_ELEMENT_ERROR (vdec, STREAM, FAILED, ("Can't create an instance "
"of the decoder filter"), (NULL));
goto error;
}
/* create fake sink filter */
hres = CoCreateInstance (&CLSID_DshowFakeSink, NULL, CLSCTX_INPROC,
&IID_IBaseFilter, (LPVOID *) & vdec->sinkfilter);
if (hres != S_OK || !vdec->sinkfilter) {
GST_ELEMENT_ERROR (vdec, STREAM, FAILED, ("Can't create an instance "
"of the directshow fakesink (error=%d)", hres), (NULL));
goto error;
}
/* add filters to the graph */
hres = IFilterGraph_AddFilter (vdec->filtergraph, vdec->srcfilter, L"src");
if (hres != S_OK) {
GST_ELEMENT_ERROR (vdec, STREAM, FAILED, ("Can't add fakesrc filter "
"to the graph (error=%d)", hres), (NULL));
goto error;
}
hres =
IFilterGraph_AddFilter (vdec->filtergraph, vdec->decfilter, L"decoder");
if (hres != S_OK) {
GST_ELEMENT_ERROR (vdec, STREAM, FAILED, ("Can't add decoder filter "
"to the graph (error=%d)", hres), (NULL));
goto error;
}
hres = IFilterGraph_AddFilter (vdec->filtergraph, vdec->sinkfilter, L"sink");
if (hres != S_OK) {
GST_ELEMENT_ERROR (vdec, STREAM, FAILED, ("Can't add fakesink filter "
"to the graph (error=%d)", hres), (NULL));
goto error;
}
return TRUE;
error:
if (vdec->srcfilter) {
IBaseFilter_Release (vdec->srcfilter);
vdec->srcfilter = NULL;
}
if (vdec->decfilter) {
IBaseFilter_Release (vdec->decfilter);
vdec->decfilter = NULL;
}
if (vdec->sinkfilter) {
IBaseFilter_Release (vdec->sinkfilter);
vdec->sinkfilter = NULL;
}
if (vdec->mediafilter) {
IMediaFilter_Release (vdec->mediafilter);
vdec->mediafilter = NULL;
}
if (vdec->filtergraph) {
IFilterGraph_Release (vdec->filtergraph);
vdec->filtergraph = NULL;
}
return FALSE;
}
static gboolean
gst_dshowvideodec_destroy_graph_and_filters (GstDshowVideoDec * vdec)
{
if (vdec->mediafilter) {
IMediaFilter_Stop (vdec->mediafilter);
}
if (vdec->gstdshowsrcfilter) {
IGstDshowInterface_Release (vdec->gstdshowsrcfilter);
vdec->gstdshowsrcfilter = NULL;
}
if (vdec->srcfilter) {
if (vdec->filtergraph)
IFilterGraph_RemoveFilter (vdec->filtergraph, vdec->srcfilter);
IBaseFilter_Release (vdec->srcfilter);
vdec->srcfilter = NULL;
}
if (vdec->decfilter) {
if (vdec->filtergraph)
IFilterGraph_RemoveFilter (vdec->filtergraph, vdec->decfilter);
IBaseFilter_Release (vdec->decfilter);
vdec->decfilter = NULL;
}
if (vdec->sinkfilter) {
if (vdec->filtergraph)
IFilterGraph_RemoveFilter (vdec->filtergraph, vdec->sinkfilter);
IBaseFilter_Release (vdec->sinkfilter);
vdec->sinkfilter = NULL;
}
if (vdec->mediafilter) {
IMediaFilter_Release (vdec->mediafilter);
vdec->mediafilter = NULL;
}
if (vdec->filtergraph) {
IFilterGraph_Release (vdec->filtergraph);
vdec->filtergraph = NULL;
}
return TRUE;
}
gboolean
dshow_vdec_register (GstPlugin * plugin)
{
GTypeInfo info = {
sizeof (GstDshowVideoDecClass),
(GBaseInitFunc) gst_dshowvideodec_base_init,
NULL,
(GClassInitFunc) gst_dshowvideodec_class_init,
NULL,
NULL,
sizeof (GstDshowVideoDec),
0,
(GInstanceInitFunc) gst_dshowvideodec_init,
};
gint i;
GST_DEBUG_CATEGORY_INIT (dshowvideodec_debug, "dshowvideodec", 0,
"Directshow filter video decoder");
CoInitializeEx (NULL, COINIT_MULTITHREADED);
for (i = 0; i < sizeof (video_dec_codecs) / sizeof (CodecEntry); i++) {
GType type;
if (gst_dshow_find_filter (video_dec_codecs[i].input_majortype,
video_dec_codecs[i].input_subtype,
video_dec_codecs[i].output_majortype,
video_dec_codecs[i].output_subtype,
video_dec_codecs[i].prefered_filter_substring, NULL)) {
GST_CAT_DEBUG (dshowvideodec_debug, "Registering %s",
video_dec_codecs[i].element_name);
tmp = &video_dec_codecs[i];
type =
g_type_register_static (GST_TYPE_ELEMENT,
video_dec_codecs[i].element_name, &info, 0);
if (!gst_element_register (plugin, video_dec_codecs[i].element_name,
GST_RANK_PRIMARY, type)) {
return FALSE;
}
GST_CAT_DEBUG (dshowvideodec_debug, "Registered %s",
video_dec_codecs[i].element_name);
} else {
GST_CAT_DEBUG (dshowvideodec_debug,
"Element %s not registered (the format is not supported by the system)",
video_dec_codecs[i].element_name);
}
}
CoUninitialize ();
return TRUE;
}
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