diff options
Diffstat (limited to 'sys/dshowdecwrapper/gstdshowvideodec.cpp')
| -rw-r--r-- | sys/dshowdecwrapper/gstdshowvideodec.cpp | 1170 |
1 files changed, 1170 insertions, 0 deletions
diff --git a/sys/dshowdecwrapper/gstdshowvideodec.cpp b/sys/dshowdecwrapper/gstdshowvideodec.cpp new file mode 100644 index 00000000..80a1a193 --- /dev/null +++ b/sys/dshowdecwrapper/gstdshowvideodec.cpp @@ -0,0 +1,1170 @@ +/* + * 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 <atlbase.h> + +#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 VideoCodecEntry *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); + +/* 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, const 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 VideoCodecEntry 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" + } */ +}; + +HRESULT VideoFakeSink::DoRenderSample(IMediaSample *pMediaSample) +{ + gboolean in_seg = FALSE; + gint64 clip_start = 0, clip_stop = 0; + GstDshowVideoDecClass *klass = + (GstDshowVideoDecClass *) G_OBJECT_GET_CLASS (mDec); + GstBuffer *buf = NULL; + GstClockTime start, stop; + + if(pMediaSample) + { + BYTE *pBuffer = NULL; + LONGLONG lStart = 0, lStop = 0; + long size = pMediaSample->GetActualDataLength(); + + pMediaSample->GetPointer(&pBuffer); + pMediaSample->GetTime(&lStart, &lStop); + + start = lStart * 100; + stop = lStop * 100; + /* check if this buffer is in our current segment */ + in_seg = gst_segment_clip (mDec->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_DEBUG_OBJECT (mDec, + "buffer is out of segment, start %" GST_TIME_FORMAT " stop %" + GST_TIME_FORMAT, GST_TIME_ARGS (start), GST_TIME_ARGS (stop)); + goto done; + } + + /* buffer is in our segment, allocate a new out buffer and clip its + * timestamps */ + mDec->last_ret = gst_pad_alloc_buffer (mDec->srcpad, + GST_BUFFER_OFFSET_NONE, + size, + GST_PAD_CAPS (mDec->srcpad), &buf); + if (!buf) { + GST_WARNING_OBJECT (mDec, + "cannot allocate a new GstBuffer"); + goto done; + } + + /* set buffer properties */ + 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 = mDec->width * 4; + + for (; line < mDec->height; line++) { + memcpy (GST_BUFFER_DATA (buf) + (line * stride), + pBuffer + (size - ((line + 1) * (stride))), stride); + } + } else { + memcpy (GST_BUFFER_DATA (buf), pBuffer, MIN ((unsigned int)size, GST_BUFFER_SIZE (buf))); + } + + GST_LOG_OBJECT (mDec, + "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 */ + mDec->last_ret = gst_pad_push (mDec->srcpad, buf); + } +done: + + return S_OK; +} + +HRESULT VideoFakeSink::CheckMediaType(const CMediaType *pmt) +{ + if (pmt != NULL) { + if (*pmt == m_MediaType) + return S_OK; + } + + return S_FALSE; +} + +static void +gst_dshowvideodec_base_init (gpointer klass) +{ + GstDshowVideoDecClass *videodec_class = (GstDshowVideoDecClass *)klass; + GstPadTemplate *src, *sink; + GstCaps *srccaps, *sinkcaps; + GstElementClass *element_class = GST_ELEMENT_CLASS (klass); + GstElementDetails details; + + videodec_class->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 = (GstElementClass *)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); + HRESULT hr; + + /* 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->fakesrc = NULL; + vdec->fakesink = NULL; + vdec->decfilter = NULL; + + vdec->last_ret = GST_FLOW_OK; + + vdec->filtergraph = NULL; + vdec->mediafilter = NULL; + vdec->srccaps = NULL; + vdec->segment = gst_segment_new (); + + vdec->setup = FALSE; + + hr = CoInitialize (0); + if (SUCCEEDED(hr)) { + vdec->comInitialized = TRUE; + } +} + +static void +gst_dshowvideodec_dispose (GObject * object) +{ + GstDshowVideoDec *vdec = (GstDshowVideoDec *) (object); + + if (vdec->segment) { + gst_segment_free (vdec->segment); + vdec->segment = NULL; + } + + if (vdec->comInitialized) { + CoUninitialize (); + vdec->comInitialized = FALSE; + } + + 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; + guint size = 0; + GstCaps *caps_out; + AM_MEDIA_TYPE output_mediatype, input_mediatype; + VIDEOINFOHEADER *input_vheader = NULL, *output_vheader = NULL; + CComPtr<IPin> output_pin; + CComPtr<IPin> input_pin; + IBaseFilter *srcfilter = NULL; + IBaseFilter *sinkfilter = 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 = (VIDEOINFOHEADER *)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 = (VIDEOINFOHEADER *)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; + + vdec->fakesrc->GetOutputPin()->SetMediaType(&input_mediatype); + + /* set the sample size for fakesrc filter to the output buffer size */ + vdec->fakesrc->GetOutputPin()->SetSampleSize(input_mediatype.lSampleSize); + + /* connect our fake src to decoder */ + hres = vdec->fakesrc->QueryInterface(IID_IBaseFilter, + (void **) &srcfilter); + if (FAILED (hres)) { + GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION, + ("Can't QT fakesrc to IBaseFilter: %x", hres), (NULL)); + goto end; + } + + output_pin = gst_dshow_get_pin_from_filter (srcfilter, PINDIR_OUTPUT); + if (!output_pin) { + GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION, + ("Can't get output pin from our directshow fakesrc filter"), (NULL)); + goto end; + } + input_pin = gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_INPUT); + if (!input_pin) { + GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION, + ("Can't get input pin from decoder filter"), (NULL)); + goto end; + } + + hres = vdec->filtergraph->ConnectDirect (output_pin, input_pin, NULL); + if (hres != S_OK) { + GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION, + ("Can't connect fakesrc with decoder (error=%x)", hres), (NULL)); + goto end; + } + + /* 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 = (BYTE *) output_vheader; + + vdec->fakesink->SetMediaType (&output_mediatype); + + /* connect decoder to our fake sink */ + output_pin = gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT); + if (!output_pin) { + GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION, + ("Can't get output pin from our decoder filter"), (NULL)); + goto end; + } + + hres = vdec->fakesink->QueryInterface(IID_IBaseFilter, + (void **) &sinkfilter); + if (FAILED (hres)) { + GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION, + ("Can't QT fakesink to IBaseFilter: %x", hres), (NULL)); + goto end; + } + + input_pin = gst_dshow_get_pin_from_filter (sinkfilter, PINDIR_INPUT); + if (!input_pin) { + GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION, + ("Can't get input pin from our directshow fakesink filter"), (NULL)); + goto end; + } + + hres = vdec->filtergraph->ConnectDirect(output_pin, input_pin, + &output_mediatype); + if (hres != S_OK) { + GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION, + ("Can't connect decoder with fakesink (error=%x)", 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 = vdec->mediafilter->Run (-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 (srcfilter) + srcfilter->Release(); + if (sinkfilter) + sinkfilter->Release(); + 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; + } + + gst_object_unref (vdec); + + return ret; +} + +static GstFlowReturn +gst_dshowvideodec_chain (GstPad * pad, GstBuffer * buffer) +{ + GstDshowVideoDec *vdec = (GstDshowVideoDec *) gst_pad_get_parent (pad); + bool discont = FALSE; + GstClockTime stop; + + if (!vdec->setup) { + /* we are not setup */ + GST_WARNING_OBJECT (vdec, "Decoder not set up, failing"); + vdec->last_ret = GST_FLOW_WRONG_STATE; + goto beach; + } + + if (GST_FLOW_IS_FATAL (vdec->last_ret)) { + GST_DEBUG_OBJECT (vdec, "last decoding iteration generated a fatal error " + "%s", gst_flow_get_name (vdec->last_ret)); + 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); + discont = TRUE; + } + + /* push the buffer to the directshow decoder */ + vdec->fakesrc->GetOutputPin()->PushBuffer( + GST_BUFFER_DATA (buffer), GST_BUFFER_TIMESTAMP (buffer), stop, + GST_BUFFER_SIZE (buffer), discont); + +beach: + gst_buffer_unref (buffer); + gst_object_unref (vdec); + + return vdec->last_ret; +} + +static GstCaps * +gst_dshowvideodec_src_getcaps (GstPad * pad) +{ + GstDshowVideoDec *vdec = (GstDshowVideoDec *) gst_pad_get_parent (pad); + GstCaps *caps = NULL; + + if (!vdec->srccaps) + vdec->srccaps = gst_caps_new_empty (); + + if (vdec->decfilter) { + CComPtr<IPin> output_pin; + CComPtr<IEnumMediaTypes> enum_mediatypes; + HRESULT hres; + ULONG fetched; + + output_pin = gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT); + if (!output_pin) { + GST_ELEMENT_ERROR (vdec, STREAM, FAILED, + ("failed getting ouput pin from the decoder"), (NULL)); + goto beach; + } + + hres = output_pin->EnumMediaTypes (&enum_mediatypes); + if (hres == S_OK && enum_mediatypes) { + AM_MEDIA_TYPE *mediatype = NULL; + + enum_mediatypes->Reset(); + while (hres = + enum_mediatypes->Next(1, &mediatype, &fetched), + hres == S_OK) + { + VIDEOINFOHEADER *video_info; + GstCaps *mediacaps = NULL; + + /* RGB24 */ + if (IsEqualGUID (mediatype->subtype, MEDIASUBTYPE_RGB24) && + IsEqualGUID (mediatype->formattype, FORMAT_VideoInfo)) + { + 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 { + DeleteMediaType (mediatype); + } + } else { + DeleteMediaType (mediatype); + } + + } + } + } + + if (vdec->srccaps) + caps = gst_caps_ref (vdec->srccaps); + +beach: + gst_object_unref (vdec); + + return caps; +} + +static gboolean +gst_dshowvideodec_src_setcaps (GstPad * pad, GstCaps * caps) +{ + gboolean ret = FALSE; + + return ret; +} + +static gboolean +gst_dshowvideodec_flush (GstDshowVideoDec * vdec) +{ + if (!vdec->fakesrc) + return FALSE; + + /* flush dshow decoder and reset timestamp */ + vdec->fakesrc->GetOutputPin()->Flush(); + + return TRUE; +} + +static gboolean +gst_dshowvideodec_get_filter_output_format (GstDshowVideoDec * vdec, + const GUID subtype, VIDEOINFOHEADER ** format, guint * size) +{ + CComPtr<IPin> output_pin; + CComPtr<IEnumMediaTypes> enum_mediatypes; + HRESULT hres; + ULONG fetched; + BOOL ret = FALSE; + + if (!vdec->decfilter) + return FALSE; + + output_pin = gst_dshow_get_pin_from_filter (vdec->decfilter, PINDIR_OUTPUT); + if (!output_pin) { + GST_ELEMENT_ERROR (vdec, CORE, NEGOTIATION, + ("failed getting ouput pin from the decoder"), (NULL)); + return FALSE; + } + + hres = output_pin->EnumMediaTypes (&enum_mediatypes); + if (hres == S_OK && enum_mediatypes) { + AM_MEDIA_TYPE *mediatype = NULL; + + enum_mediatypes->Reset(); + while (hres = + enum_mediatypes->Next(1, &mediatype, &fetched), + hres == S_OK) + { + if (IsEqualGUID (mediatype->subtype, subtype) && + IsEqualGUID (mediatype->formattype, FORMAT_VideoInfo)) + { + *size = mediatype->cbFormat; + *format = (VIDEOINFOHEADER *)g_malloc0 (*size); + memcpy (*format, mediatype->pbFormat, *size); + ret = TRUE; + } + DeleteMediaType (mediatype); + if (ret) + break; + } + } + + return ret; +} + +static gboolean +gst_dshowvideodec_create_graph_and_filters (GstDshowVideoDec * vdec) +{ + HRESULT hres = S_FALSE; + GstDshowVideoDecClass *klass = + (GstDshowVideoDecClass *) G_OBJECT_GET_CLASS (vdec); + IBaseFilter *srcfilter = NULL; + IBaseFilter *sinkfilter = NULL; + gboolean ret = FALSE; + + /* 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 = vdec->filtergraph->QueryInterface(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 */ + vdec->fakesrc = new FakeSrc(); + /* Created with a refcount of zero, so increment that */ + vdec->fakesrc->AddRef(); + + hres = vdec->fakesrc->QueryInterface(IID_IBaseFilter, + (void **) &srcfilter); + if (FAILED (hres)) { + GST_WARNING_OBJECT (vdec, "Failed to QI fakesrc to IBaseFilter"); + 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->preferred_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 */ + vdec->fakesink = new VideoFakeSink(vdec); + /* Created with a refcount of zero, so increment that */ + vdec->fakesink->AddRef(); + + hres = vdec->fakesink->QueryInterface(IID_IBaseFilter, + (void **) &sinkfilter); + if (FAILED (hres)) { + GST_WARNING_OBJECT (vdec, "Failed to QI fakesink to IBaseFilter"); + goto error; + } + + /* add filters to the graph */ + hres = vdec->filtergraph->AddFilter (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 = vdec->filtergraph->AddFilter(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 = vdec->filtergraph->AddFilter(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; + } + + vdec->setup = TRUE; + + ret = TRUE; + +done: + if (srcfilter) + srcfilter->Release(); + if (sinkfilter) + sinkfilter->Release(); + return ret; + +error: + if (vdec->fakesrc) { + vdec->fakesrc->Release(); + vdec->fakesrc = NULL; + } + if (vdec->decfilter) { + vdec->decfilter->Release(); + vdec->decfilter = NULL; + } + if (vdec->fakesink) { + vdec->fakesink->Release(); + vdec->fakesink = NULL; + } + if (vdec->mediafilter) { + vdec->mediafilter->Release(); + vdec->mediafilter = NULL; + } + if (vdec->filtergraph) { + vdec->filtergraph->Release(); + vdec->filtergraph = NULL; + } + + goto done; +} + +static gboolean +gst_dshowvideodec_destroy_graph_and_filters (GstDshowVideoDec * vdec) +{ + HRESULT hres; + + if (vdec->mediafilter) { + vdec->mediafilter->Stop(); + } + + if (vdec->fakesrc) { + if (vdec->filtergraph) { + IBaseFilter *filter; + hres = vdec->fakesrc->QueryInterface(IID_IBaseFilter, + (void **) &filter); + if (SUCCEEDED (hres)) { + vdec->filtergraph->RemoveFilter(filter); + filter->Release(); + } + } + + vdec->fakesrc->Release(); + vdec->fakesrc = NULL; + } + if (vdec->decfilter) { + if (vdec->filtergraph) + vdec->filtergraph->RemoveFilter(vdec->decfilter); + vdec->decfilter->Release(); + vdec->decfilter = NULL; + } + if (vdec->fakesink) { + if (vdec->filtergraph) { + IBaseFilter *filter; + hres = vdec->fakesink->QueryInterface(IID_IBaseFilter, + (void **) &filter); + if (SUCCEEDED (hres)) { + vdec->filtergraph->RemoveFilter(filter); + filter->Release(); + } + } + + vdec->fakesink->Release(); + vdec->fakesink = NULL; + } + if (vdec->mediafilter) { + vdec->mediafilter->Release(); + vdec->mediafilter = NULL; + } + if (vdec->filtergraph) { + vdec->filtergraph->Release(); + vdec->filtergraph = NULL; + } + + vdec->setup = FALSE; + + 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; + HRESULT hr; + + GST_DEBUG_CATEGORY_INIT (dshowvideodec_debug, "dshowvideodec", 0, + "Directshow filter video decoder"); + + hr = CoInitialize (0); + + for (i = 0; i < sizeof (video_dec_codecs) / sizeof (VideoCodecEntry); 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].preferred_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, (GTypeFlags)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); + } + } + + if (SUCCEEDED(hr)) + CoUninitialize (); + + return TRUE; +} |