mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-09-09 13:48:55 +00:00
1206 lines
37 KiB
C++
1206 lines
37 KiB
C++
/*
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* GStreamer DirectShow codecs wrapper
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* Copyright <2006, 2007, 2008, 2009, 2010> Fluendo <support@fluendo.com>
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* Copyright <2006, 2007, 2008> Pioneers of the Inevitable <songbird@songbirdnest.com>
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* Copyright <2007,2008> Sebastien Moutte <sebastien@moutte.net>
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Alternatively, the contents of this file may be used under the
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* GNU Lesser General Public License Version 2.1 (the "LGPL"), in
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* which case the following provisions apply instead of the ones
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* mentioned above:
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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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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "gstdshowaudiodec.h"
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#include <mmreg.h>
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#include <dmoreg.h>
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#include <wmcodecdsp.h>
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#include <gst/audio/audio.h>
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GST_DEBUG_CATEGORY_STATIC (dshowaudiodec_debug);
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#define GST_CAT_DEFAULT dshowaudiodec_debug
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#define gst_dshowaudiodec_parent_class parent_class
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G_DEFINE_TYPE(GstDshowAudioDec, gst_dshowaudiodec, GST_TYPE_ELEMENT)
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static void gst_dshowaudiodec_finalize (GObject * object);
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static GstStateChangeReturn gst_dshowaudiodec_change_state
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(GstElement * element, GstStateChange transition);
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/* sink pad overwrites */
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static gboolean gst_dshowaudiodec_sink_setcaps (GstPad * pad, GstCaps * caps);
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static GstFlowReturn gst_dshowaudiodec_chain (GstPad * pad, GstObject *parent, GstBuffer * buffer);
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static gboolean gst_dshowaudiodec_sink_event (GstPad * pad, GstObject *parent, GstEvent * event);
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/* utils */
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static gboolean gst_dshowaudiodec_create_graph_and_filters (GstDshowAudioDec *
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adec);
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static gboolean gst_dshowaudiodec_destroy_graph_and_filters (GstDshowAudioDec *
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adec);
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static gboolean gst_dshowaudiodec_flush (GstDshowAudioDec * adec);
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static gboolean gst_dshowaudiodec_get_filter_settings (GstDshowAudioDec * adec);
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static gboolean gst_dshowaudiodec_setup_graph (GstDshowAudioDec * adec, GstCaps *caps);
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/* All the GUIDs we want are generated from the FOURCC like this */
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#define GUID_MEDIASUBTYPE_FROM_FOURCC(fourcc) \
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{ fourcc , 0x0000, 0x0010, \
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{ 0x80, 0x00, 0x00, 0xaa, 0x00, 0x38, 0x9b, 0x71 }}
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/* WMA we should always use the DMO */
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static PreferredFilter preferred_wma_filters[] = {
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{&CLSID_CWMADecMediaObject, &DMOCATEGORY_AUDIO_DECODER},
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{0}
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};
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/* Prefer the Vista (DMO) decoder if present, otherwise the XP
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* decoder (not a DMO), otherwise fallback to highest-merit */
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static const GUID CLSID_XP_MP3_DECODER = {0x38BE3000, 0xDBF4, 0x11D0,
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{0x86,0x0E,0x00,0xA0,0x24,0xCF,0xEF,0x6D}};
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static PreferredFilter preferred_mp3_filters[] = {
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{&CLSID_CMP3DecMediaObject, &DMOCATEGORY_AUDIO_DECODER},
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{&CLSID_XP_MP3_DECODER},
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{0}
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};
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/* MPEG 1/2: use the MPEG Audio Decoder filter */
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static const GUID CLSID_WINDOWS_MPEG_AUDIO_DECODER =
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{0x4A2286E0, 0x7BEF, 0x11CE,
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{0x9B, 0xD9, 0x00, 0x00, 0xE2, 0x02, 0x59, 0x9C}};
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static PreferredFilter preferred_mpegaudio_filters[] = {
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{&CLSID_WINDOWS_MPEG_AUDIO_DECODER},
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{0}
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};
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static const AudioCodecEntry audio_dec_codecs[] = {
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{"dshowadec_wma1", "Windows Media Audio 7",
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WAVE_FORMAT_MSAUDIO1,
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"audio/x-wma, wmaversion = (int) 1",
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preferred_wma_filters},
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{"dshowadec_wma2", "Windows Media Audio 8",
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WAVE_FORMAT_WMAUDIO2,
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"audio/x-wma, wmaversion = (int) 2",
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preferred_wma_filters},
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{"dshowadec_wma3", "Windows Media Audio 9 Professional",
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WAVE_FORMAT_WMAUDIO3,
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"audio/x-wma, wmaversion = (int) 3",
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preferred_wma_filters},
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{"dshowadec_wma4", "Windows Media Audio 9 Lossless",
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WAVE_FORMAT_WMAUDIO_LOSSLESS,
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"audio/x-wma, wmaversion = (int) 4",
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preferred_wma_filters},
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{"dshowadec_wms", "Windows Media Audio Voice v9",
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WAVE_FORMAT_WMAVOICE9,
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"audio/x-wms",
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preferred_wma_filters},
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{"dshowadec_mp3", "MPEG Layer 3 Audio",
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WAVE_FORMAT_MPEGLAYER3,
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"audio/mpeg, "
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"mpegversion = (int) 1, "
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"layer = (int)3, "
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"rate = (int) [ 8000, 48000 ], "
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"channels = (int) [ 1, 2 ], "
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"parsed= (boolean) true",
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preferred_mp3_filters},
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{"dshowadec_mpeg_1_2", "MPEG Layer 1,2 Audio",
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WAVE_FORMAT_MPEG,
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"audio/mpeg, "
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"mpegversion = (int) 1, "
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"layer = (int) [ 1, 2 ], "
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"rate = (int) [ 8000, 48000 ], "
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"channels = (int) [ 1, 2 ], "
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"parsed= (boolean) true",
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preferred_mpegaudio_filters},
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};
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HRESULT AudioFakeSink::DoRenderSample(IMediaSample *pMediaSample)
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{
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GstBuffer *out_buf = NULL;
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gboolean in_seg = FALSE;
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GstClockTime buf_start, buf_stop;
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guint64 clip_start = 0, clip_stop = 0;
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guint start_offset = 0, stop_offset;
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GstClockTime duration;
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if(pMediaSample)
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{
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BYTE *pBuffer = NULL;
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LONGLONG lStart = 0, lStop = 0;
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long size = pMediaSample->GetActualDataLength();
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pMediaSample->GetPointer(&pBuffer);
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pMediaSample->GetTime(&lStart, &lStop);
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if (!GST_CLOCK_TIME_IS_VALID (mDec->timestamp)) {
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// Convert REFERENCE_TIME to GST_CLOCK_TIME
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mDec->timestamp = (GstClockTime)lStart * 100;
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}
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duration = (lStop - lStart) * 100;
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buf_start = mDec->timestamp;
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buf_stop = mDec->timestamp + duration;
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/* save stop position to start next buffer with it */
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mDec->timestamp = buf_stop;
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/* check if this buffer is in our current segment */
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in_seg = gst_segment_clip (mDec->segment, GST_FORMAT_TIME,
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buf_start, buf_stop, &clip_start, &clip_stop);
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/* if the buffer is out of segment do not push it downstream */
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if (!in_seg) {
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GST_DEBUG_OBJECT (mDec,
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"buffer is out of segment, start %" GST_TIME_FORMAT " stop %"
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GST_TIME_FORMAT, GST_TIME_ARGS (buf_start), GST_TIME_ARGS (buf_stop));
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goto done;
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}
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/* buffer is entirely or partially in-segment, so allocate a
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* GstBuffer for output, and clip if required */
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/* allocate a new buffer for raw audio */
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out_buf = gst_buffer_new_and_alloc(size);
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if (!out_buf) {
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GST_WARNING_OBJECT (mDec, "cannot allocate a new GstBuffer");
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goto done;
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}
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/* set buffer properties */
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GST_BUFFER_TIMESTAMP (out_buf) = buf_start;
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GST_BUFFER_DURATION (out_buf) = duration;
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if (gst_buffer_fill(out_buf, 0, pBuffer, size) != size) {
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gst_buffer_unref (out_buf);
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GST_WARNING_OBJECT (mDec, "unable to fill output buffer");
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goto done;
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}
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/* we have to remove some heading samples */
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if ((GstClockTime) clip_start > buf_start) {
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start_offset = (guint)gst_util_uint64_scale_int (clip_start - buf_start,
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mDec->rate, GST_SECOND) * mDec->depth / 8 * mDec->channels;
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}
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else
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start_offset = 0;
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/* we have to remove some trailing samples */
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if ((GstClockTime) clip_stop < buf_stop) {
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stop_offset = (guint)gst_util_uint64_scale_int (buf_stop - clip_stop,
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mDec->rate, GST_SECOND) * mDec->depth / 8 * mDec->channels;
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}
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else
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stop_offset = size;
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/* truncating */
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if ((start_offset != 0) || (stop_offset != (size_t) size)) {
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GstBuffer *subbuf = gst_buffer_copy_region (out_buf, GST_BUFFER_COPY_ALL,
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start_offset, stop_offset - start_offset);
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if (subbuf) {
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gst_buffer_unref (out_buf);
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out_buf = subbuf;
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}
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}
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GST_BUFFER_TIMESTAMP (out_buf) = clip_start;
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GST_BUFFER_DURATION (out_buf) = clip_stop - clip_start;
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/* replace the saved stop position by the clipped one */
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mDec->timestamp = clip_stop;
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GST_DEBUG_OBJECT (mDec,
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"push_buffer (size %d)=> pts %" GST_TIME_FORMAT " stop %" GST_TIME_FORMAT
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" duration %" GST_TIME_FORMAT, size,
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (out_buf)),
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GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (out_buf) +
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GST_BUFFER_DURATION (out_buf)),
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GST_TIME_ARGS (GST_BUFFER_DURATION (out_buf)));
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mDec->last_ret = gst_pad_push (mDec->srcpad, out_buf);
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}
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done:
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return S_OK;
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}
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HRESULT AudioFakeSink::CheckMediaType(const CMediaType *pmt)
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{
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if(pmt != NULL)
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{
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/* The Vista MP3 decoder (and possibly others?) outputs an
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* AM_MEDIA_TYPE with the wrong cbFormat. So, rather than using
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* CMediaType.operator==, we implement a sufficient check ourselves.
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* I think this is a bug in the MP3 decoder.
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*/
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if (IsEqualGUID (pmt->majortype, m_MediaType.majortype) &&
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IsEqualGUID (pmt->subtype, m_MediaType.subtype) &&
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IsEqualGUID (pmt->formattype, m_MediaType.formattype))
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{
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/* Types are the same at the top-level. Now, we need to compare
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* the format blocks.
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* We special case WAVEFORMATEX to not check that
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* pmt->cbFormat == m_MediaType.cbFormat, though the actual format
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* blocks must still be the same.
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*/
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if (pmt->formattype == FORMAT_WaveFormatEx) {
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if (pmt->cbFormat >= sizeof (WAVEFORMATEX) &&
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m_MediaType.cbFormat >= sizeof (WAVEFORMATEX))
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{
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WAVEFORMATEX *wf1 = (WAVEFORMATEX *)pmt->pbFormat;
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WAVEFORMATEX *wf2 = (WAVEFORMATEX *)m_MediaType.pbFormat;
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if (wf1->cbSize == wf2->cbSize &&
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memcmp (wf1, wf2, sizeof(WAVEFORMATEX) + wf1->cbSize) == 0)
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return S_OK;
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}
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}
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else {
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if (pmt->cbFormat == m_MediaType.cbFormat &&
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pmt->cbFormat == 0 ||
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(pmt->pbFormat != NULL && m_MediaType.pbFormat != NULL &&
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memcmp (pmt->pbFormat, m_MediaType.pbFormat, pmt->cbFormat) == 0))
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return S_OK;
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}
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}
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}
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return S_FALSE;
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}
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int AudioFakeSink::GetBufferSize()
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{
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IMemAllocator *allocator = NULL;
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if (m_pInputPin) {
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allocator = m_pInputPin->Allocator();
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if(allocator) {
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ALLOCATOR_PROPERTIES props;
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allocator->GetProperties(&props);
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return props.cbBuffer;
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}
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}
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return 0;
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}
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static void
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gst_dshowaudiodec_base_init (gpointer klass)
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{
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GstDshowAudioDecClass *audiodec_class = (GstDshowAudioDecClass *) klass;
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GstPadTemplate *src, *sink;
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GstCaps *srccaps, *sinkcaps;
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GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
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const AudioCodecEntry *tmp;
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gpointer qdata;
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gchar *longname, *description;
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qdata = g_type_get_qdata (G_OBJECT_CLASS_TYPE (klass), DSHOW_CODEC_QDATA);
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/* element details */
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tmp = audiodec_class->entry = (AudioCodecEntry *) qdata;
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longname = g_strdup_printf ("DirectShow %s Decoder Wrapper",
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tmp->element_longname);
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description = g_strdup_printf ("DirectShow %s Decoder Wrapper",
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tmp->element_longname);
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gst_element_class_set_metadata(element_class, longname, "Codec/Decoder/Audio", description,
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"Sebastien Moutte <sebastien@moutte.net>");
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g_free (longname);
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g_free (description);
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sinkcaps = gst_caps_from_string (tmp->sinkcaps);
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srccaps = gst_caps_from_string (
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"audio/x-raw,"
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"format = (string)" GST_AUDIO_FORMATS_ALL ","
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"rate = (int)[1, MAX],"
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"channels = (int)[1, MAX],"
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"layout = (string)interleaved");
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sink = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, sinkcaps);
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src = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS, srccaps);
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/* register */
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gst_element_class_add_pad_template (element_class, src);
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gst_element_class_add_pad_template (element_class, sink);
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if (sinkcaps)
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gst_caps_unref(sinkcaps);
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if (srccaps)
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gst_caps_unref(srccaps);
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}
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static void
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gst_dshowaudiodec_class_init (GstDshowAudioDecClass * klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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GstElementClass *gstelement_class = GST_ELEMENT_CLASS (klass);
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gobject_class->finalize = gst_dshowaudiodec_finalize;
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gstelement_class->change_state =
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GST_DEBUG_FUNCPTR (gst_dshowaudiodec_change_state);
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parent_class = (GstElementClass *) g_type_class_peek_parent (klass);
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}
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static void
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gst_dshowaudiodec_com_thread (GstDshowAudioDec * adec)
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{
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HRESULT res;
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g_mutex_lock (&adec->com_init_lock);
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/* Initialize COM with a MTA for this process. This thread will
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* be the first one to enter the apartement and the last one to leave
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* it, unitializing COM properly */
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res = CoInitializeEx (0, COINIT_MULTITHREADED);
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if (res == S_FALSE)
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GST_WARNING_OBJECT (adec, "COM has been already initialized in the same process");
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else if (res == RPC_E_CHANGED_MODE)
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GST_WARNING_OBJECT (adec, "The concurrency model of COM has changed.");
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else
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GST_INFO_OBJECT (adec, "COM initialized successfully");
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adec->comInitialized = TRUE;
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|
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/* Signal other threads waiting on this condition that COM was initialized */
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g_cond_signal (&adec->com_initialized);
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g_mutex_unlock (&adec->com_init_lock);
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|
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/* Wait until the uninitialize condition is met to leave the COM apartement */
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g_mutex_lock (&adec->com_deinit_lock);
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g_cond_wait (&adec->com_uninitialize, &adec->com_deinit_lock);
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|
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CoUninitialize ();
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GST_INFO_OBJECT (adec, "COM uninitialized successfully");
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adec->comInitialized = FALSE;
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g_cond_signal (&adec->com_uninitialized);
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g_mutex_unlock (&adec->com_deinit_lock);
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}
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|
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static void
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gst_dshowaudiodec_init (GstDshowAudioDec * adec)
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{
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GstElementClass *element_class = GST_ELEMENT_GET_CLASS (adec);
|
|
|
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/* setup pads */
|
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adec->sinkpad =
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gst_pad_new_from_template (gst_element_class_get_pad_template
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(element_class, "sink"), "sink");
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|
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gst_pad_set_event_function (adec->sinkpad, gst_dshowaudiodec_sink_event);
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gst_pad_set_chain_function (adec->sinkpad, gst_dshowaudiodec_chain);
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gst_element_add_pad (GST_ELEMENT (adec), adec->sinkpad);
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|
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adec->srcpad =
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gst_pad_new_from_template (gst_element_class_get_pad_template
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(element_class, "src"), "src");
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gst_element_add_pad (GST_ELEMENT (adec), adec->srcpad);
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|
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adec->fakesrc = NULL;
|
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adec->fakesink = NULL;
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|
|
adec->decfilter = 0;
|
|
adec->filtergraph = 0;
|
|
adec->mediafilter = 0;
|
|
|
|
adec->timestamp = GST_CLOCK_TIME_NONE;
|
|
adec->segment = gst_segment_new ();
|
|
adec->setup = FALSE;
|
|
adec->depth = 0;
|
|
adec->bitrate = 0;
|
|
adec->block_align = 0;
|
|
adec->channels = 0;
|
|
adec->rate = 0;
|
|
adec->layer = 0;
|
|
adec->codec_data = NULL;
|
|
|
|
adec->last_ret = GST_FLOW_OK;
|
|
|
|
g_mutex_init(&adec->com_init_lock);
|
|
g_mutex_init(&adec->com_deinit_lock);
|
|
g_cond_init(&adec->com_initialized);
|
|
g_cond_init(&adec->com_uninitialize);
|
|
g_cond_init(&adec->com_uninitialized);
|
|
|
|
g_mutex_lock (&adec->com_init_lock);
|
|
|
|
/* create the COM initialization thread */
|
|
g_thread_new ("COM init thread", (GThreadFunc)gst_dshowaudiodec_com_thread,
|
|
adec);
|
|
|
|
/* wait until the COM thread signals that COM has been initialized */
|
|
g_cond_wait (&adec->com_initialized, &adec->com_init_lock);
|
|
g_mutex_unlock (&adec->com_init_lock);
|
|
}
|
|
|
|
static void
|
|
gst_dshowaudiodec_finalize (GObject * object)
|
|
{
|
|
GstDshowAudioDec *adec = (GstDshowAudioDec *) (object);
|
|
|
|
if (adec->segment) {
|
|
gst_segment_free (adec->segment);
|
|
adec->segment = NULL;
|
|
}
|
|
|
|
if (adec->codec_data) {
|
|
gst_buffer_unref (adec->codec_data);
|
|
adec->codec_data = NULL;
|
|
}
|
|
|
|
/* signal the COM thread that it sould uninitialize COM */
|
|
if (adec->comInitialized) {
|
|
g_mutex_lock (&adec->com_deinit_lock);
|
|
g_cond_signal (&adec->com_uninitialize);
|
|
g_cond_wait (&adec->com_uninitialized, &adec->com_deinit_lock);
|
|
g_mutex_unlock (&adec->com_deinit_lock);
|
|
}
|
|
|
|
g_mutex_clear (&adec->com_init_lock);
|
|
g_mutex_clear (&adec->com_deinit_lock);
|
|
g_cond_clear (&adec->com_initialized);
|
|
g_cond_clear (&adec->com_uninitialize);
|
|
g_cond_clear (&adec->com_uninitialized);
|
|
|
|
G_OBJECT_CLASS (parent_class)->finalize (object);
|
|
}
|
|
|
|
|
|
static GstStateChangeReturn
|
|
gst_dshowaudiodec_change_state (GstElement * element, GstStateChange transition)
|
|
{
|
|
GstDshowAudioDec *adec = (GstDshowAudioDec *) (element);
|
|
|
|
switch (transition) {
|
|
case GST_STATE_CHANGE_NULL_TO_READY:
|
|
if (!gst_dshowaudiodec_create_graph_and_filters (adec))
|
|
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:
|
|
adec->depth = 0;
|
|
adec->bitrate = 0;
|
|
adec->block_align = 0;
|
|
adec->channels = 0;
|
|
adec->rate = 0;
|
|
adec->layer = 0;
|
|
if (adec->codec_data) {
|
|
gst_buffer_unref (adec->codec_data);
|
|
adec->codec_data = NULL;
|
|
}
|
|
break;
|
|
case GST_STATE_CHANGE_READY_TO_NULL:
|
|
if (!gst_dshowaudiodec_destroy_graph_and_filters (adec))
|
|
return GST_STATE_CHANGE_FAILURE;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return GST_ELEMENT_CLASS(parent_class)->change_state (element, transition);
|
|
}
|
|
|
|
static gboolean
|
|
gst_dshowaudiodec_sink_setcaps (GstPad * pad, GstCaps * caps)
|
|
{
|
|
gboolean ret = FALSE;
|
|
GstDshowAudioDec *adec = (GstDshowAudioDec *) gst_pad_get_parent (pad);
|
|
GstStructure *s = gst_caps_get_structure (caps, 0);
|
|
const GValue *v = NULL;
|
|
|
|
adec->timestamp = GST_CLOCK_TIME_NONE;
|
|
|
|
/* read data, only rate and channels are needed */
|
|
if (!gst_structure_get_int (s, "rate", &adec->rate) ||
|
|
!gst_structure_get_int (s, "channels", &adec->channels)) {
|
|
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
|
|
("error getting audio specs from caps"), (NULL));
|
|
goto end;
|
|
}
|
|
|
|
gst_structure_get_int (s, "depth", &adec->depth);
|
|
gst_structure_get_int (s, "bitrate", &adec->bitrate);
|
|
gst_structure_get_int (s, "block_align", &adec->block_align);
|
|
gst_structure_get_int (s, "layer", &adec->layer);
|
|
|
|
if (adec->codec_data) {
|
|
gst_buffer_unref (adec->codec_data);
|
|
adec->codec_data = NULL;
|
|
}
|
|
|
|
if ((v = gst_structure_get_value (s, "codec_data")))
|
|
adec->codec_data = gst_buffer_ref (gst_value_get_buffer (v));
|
|
|
|
ret = gst_dshowaudiodec_setup_graph (adec, caps);
|
|
end:
|
|
gst_object_unref (adec);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static GstFlowReturn
|
|
gst_dshowaudiodec_chain (GstPad *pad, GstObject *parent, GstBuffer *buffer)
|
|
{
|
|
GstDshowAudioDec *adec = (GstDshowAudioDec *) gst_pad_get_parent (pad);
|
|
GstMapInfo map;
|
|
bool discont = FALSE;
|
|
|
|
if (!adec->setup) {
|
|
/* we are not set up */
|
|
GST_WARNING_OBJECT (adec, "Decoder not set up, failing");
|
|
adec->last_ret = GST_FLOW_FLUSHING;
|
|
goto beach;
|
|
}
|
|
|
|
if (adec->last_ret != GST_FLOW_OK) {
|
|
GST_DEBUG_OBJECT (adec, "last decoding iteration generated a fatal error "
|
|
"%s", gst_flow_get_name (adec->last_ret));
|
|
goto beach;
|
|
}
|
|
|
|
GST_CAT_DEBUG_OBJECT (dshowaudiodec_debug, adec, "chain (size %d)=> pts %"
|
|
GST_TIME_FORMAT " stop %" GST_TIME_FORMAT,
|
|
gst_buffer_get_size(buffer), GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)),
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer) +
|
|
GST_BUFFER_DURATION (buffer)));
|
|
|
|
/* 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 (dshowaudiodec_debug, adec,
|
|
"this buffer has a DISCONT flag (%" GST_TIME_FORMAT "), flushing",
|
|
GST_TIME_ARGS (GST_BUFFER_TIMESTAMP (buffer)));
|
|
gst_dshowaudiodec_flush (adec);
|
|
discont = TRUE;
|
|
}
|
|
|
|
/* push the buffer to the directshow decoder */
|
|
gst_buffer_map(buffer, &map, GST_MAP_READ);
|
|
adec->fakesrc->GetOutputPin()->PushBuffer (
|
|
map.data, GST_BUFFER_TIMESTAMP (buffer),
|
|
GST_BUFFER_TIMESTAMP (buffer) + GST_BUFFER_DURATION (buffer),
|
|
map.size, (bool)discont);
|
|
gst_buffer_unmap(buffer, &map);
|
|
|
|
beach:
|
|
gst_buffer_unref (buffer);
|
|
gst_object_unref (adec);
|
|
return adec->last_ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_dshowaudiodec_sink_event (GstPad * pad, GstObject *parent, GstEvent * event)
|
|
{
|
|
gboolean ret = TRUE;
|
|
GstDshowAudioDec *adec = (GstDshowAudioDec *) parent;
|
|
|
|
switch (GST_EVENT_TYPE (event)) {
|
|
case GST_EVENT_CAPS:{
|
|
GstCaps *caps;
|
|
gst_event_parse_caps(event, &caps);
|
|
ret = gst_dshowaudiodec_sink_setcaps(pad, caps);
|
|
break;
|
|
}
|
|
|
|
case GST_EVENT_FLUSH_STOP:{
|
|
gst_dshowaudiodec_flush (adec);
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
}
|
|
|
|
case GST_EVENT_SEGMENT:{
|
|
const GstSegment *segment;
|
|
gst_event_parse_segment (event, &segment);
|
|
|
|
GST_CAT_DEBUG_OBJECT (dshowaudiodec_debug, adec,
|
|
"received new segment from %" GST_TIME_FORMAT " to %" GST_TIME_FORMAT,
|
|
GST_TIME_ARGS (segment->start), GST_TIME_ARGS (segment->stop));
|
|
|
|
/* save the new segment in our local current segment */
|
|
gst_segment_copy_into(segment, adec->segment);
|
|
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
ret = gst_pad_event_default (pad, parent, event);
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_dshowaudiodec_flush (GstDshowAudioDec * adec)
|
|
{
|
|
if (!adec->fakesrc)
|
|
return FALSE;
|
|
|
|
/* flush dshow decoder and reset timestamp */
|
|
adec->fakesrc->GetOutputPin()->Flush();
|
|
|
|
adec->timestamp = GST_CLOCK_TIME_NONE;
|
|
adec->last_ret = GST_FLOW_OK;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static AM_MEDIA_TYPE *
|
|
dshowaudiodec_set_input_format (GstDshowAudioDec *adec, GstCaps *caps)
|
|
{
|
|
AM_MEDIA_TYPE *mediatype;
|
|
WAVEFORMATEX *format;
|
|
GstDshowAudioDecClass *klass =
|
|
(GstDshowAudioDecClass *) G_OBJECT_GET_CLASS (adec);
|
|
const AudioCodecEntry *codec_entry = klass->entry;
|
|
int size;
|
|
|
|
mediatype = (AM_MEDIA_TYPE *)g_malloc0 (sizeof(AM_MEDIA_TYPE));
|
|
mediatype->majortype = MEDIATYPE_Audio;
|
|
GUID subtype = GUID_MEDIASUBTYPE_FROM_FOURCC (0x00000000);
|
|
subtype.Data1 = codec_entry->format;
|
|
mediatype->subtype = subtype;
|
|
mediatype->bFixedSizeSamples = TRUE;
|
|
mediatype->bTemporalCompression = FALSE;
|
|
if (adec->block_align)
|
|
mediatype->lSampleSize = adec->block_align;
|
|
else
|
|
mediatype->lSampleSize = 8192; /* need to evaluate it dynamically */
|
|
mediatype->formattype = FORMAT_WaveFormatEx;
|
|
|
|
/* We need this special behaviour for layers 1 and 2 (layer 3 uses a different
|
|
* decoder which doesn't need this */
|
|
if (adec->layer == 1 || adec->layer == 2) {
|
|
MPEG1WAVEFORMAT *mpeg1_format;
|
|
int samples, version;
|
|
GstStructure *structure = gst_caps_get_structure (caps, 0);
|
|
|
|
size = sizeof (MPEG1WAVEFORMAT);
|
|
format = (WAVEFORMATEX *)g_malloc0 (size);
|
|
format->cbSize = sizeof (MPEG1WAVEFORMAT) - sizeof (WAVEFORMATEX);
|
|
format->wFormatTag = WAVE_FORMAT_MPEG;
|
|
|
|
mpeg1_format = (MPEG1WAVEFORMAT *) format;
|
|
|
|
mpeg1_format->wfx.nChannels = adec->channels;
|
|
if (adec->channels == 2)
|
|
mpeg1_format->fwHeadMode = ACM_MPEG_STEREO;
|
|
else
|
|
mpeg1_format->fwHeadMode = ACM_MPEG_SINGLECHANNEL;
|
|
|
|
mpeg1_format->fwHeadModeExt = 0;
|
|
mpeg1_format->wHeadEmphasis = 0;
|
|
mpeg1_format->fwHeadFlags = 0;
|
|
|
|
switch (adec->layer) {
|
|
case 1:
|
|
mpeg1_format->fwHeadLayer = ACM_MPEG_LAYER3;
|
|
break;
|
|
case 2:
|
|
mpeg1_format->fwHeadLayer = ACM_MPEG_LAYER2;
|
|
break;
|
|
case 3:
|
|
mpeg1_format->fwHeadLayer = ACM_MPEG_LAYER1;
|
|
break;
|
|
};
|
|
|
|
gst_structure_get_int (structure, "mpegaudioversion", &version);
|
|
if (adec->layer == 1) {
|
|
samples = 384;
|
|
} else {
|
|
if (version == 1) {
|
|
samples = 576;
|
|
} else {
|
|
samples = 1152;
|
|
}
|
|
}
|
|
mpeg1_format->wfx.nBlockAlign = (WORD) samples;
|
|
mpeg1_format->wfx.nSamplesPerSec = adec->rate;
|
|
mpeg1_format->dwHeadBitrate = 128000; /* This doesn't seem to matter */
|
|
mpeg1_format->wfx.nAvgBytesPerSec = mpeg1_format->dwHeadBitrate / 8;
|
|
}
|
|
else
|
|
{
|
|
size = sizeof (WAVEFORMATEX) +
|
|
(adec->codec_data ? gst_buffer_get_size(adec->codec_data) : 0);
|
|
|
|
if (adec->layer == 3) {
|
|
MPEGLAYER3WAVEFORMAT *mp3format;
|
|
|
|
/* The WinXP mp3 decoder doesn't actually check the size of this structure,
|
|
* but requires that this be allocated and filled out (or we get obscure
|
|
* random crashes)
|
|
*/
|
|
size = sizeof (MPEGLAYER3WAVEFORMAT);
|
|
mp3format = (MPEGLAYER3WAVEFORMAT *)g_malloc0 (size);
|
|
format = (WAVEFORMATEX *)mp3format;
|
|
format->cbSize = MPEGLAYER3_WFX_EXTRA_BYTES;
|
|
|
|
mp3format->wID = MPEGLAYER3_ID_MPEG;
|
|
mp3format->fdwFlags = MPEGLAYER3_FLAG_PADDING_ISO; /* No idea what this means for a decoder */
|
|
|
|
/* The XP decoder divides by nBlockSize, so we must set this to a
|
|
non-zero value, but it doesn't matter what - this is meaningless
|
|
for VBR mp3 anyway */
|
|
mp3format->nBlockSize = 1;
|
|
mp3format->nFramesPerBlock = 1;
|
|
mp3format->nCodecDelay = 0;
|
|
}
|
|
else {
|
|
format = (WAVEFORMATEX *)g_malloc0 (size);
|
|
|
|
if (adec->codec_data) { /* Codec data is appended after our header */
|
|
gsize codec_size = gst_buffer_get_size(adec->codec_data);
|
|
gst_buffer_extract(adec->codec_data, 0, ((guchar *) format) + sizeof (WAVEFORMATEX),
|
|
codec_size);
|
|
format->cbSize = codec_size;
|
|
}
|
|
}
|
|
|
|
format->wFormatTag = codec_entry->format;
|
|
format->nChannels = adec->channels;
|
|
format->nSamplesPerSec = adec->rate;
|
|
format->nAvgBytesPerSec = adec->bitrate / 8;
|
|
format->nBlockAlign = adec->block_align;
|
|
format->wBitsPerSample = adec->depth;
|
|
}
|
|
|
|
mediatype->cbFormat = size;
|
|
mediatype->pbFormat = (BYTE *) format;
|
|
|
|
return mediatype;
|
|
}
|
|
|
|
static AM_MEDIA_TYPE *
|
|
dshowaudiodec_set_output_format (GstDshowAudioDec *adec)
|
|
{
|
|
AM_MEDIA_TYPE *mediatype;
|
|
WAVEFORMATEX *format;
|
|
GstDshowAudioDecClass *klass =
|
|
(GstDshowAudioDecClass *) G_OBJECT_GET_CLASS (adec);
|
|
const AudioCodecEntry *codec_entry = klass->entry;
|
|
|
|
if (!gst_dshowaudiodec_get_filter_settings (adec)) {
|
|
return NULL;
|
|
}
|
|
|
|
format = (WAVEFORMATEX *)g_malloc0(sizeof (WAVEFORMATEX));
|
|
format->wFormatTag = WAVE_FORMAT_PCM;
|
|
format->wBitsPerSample = adec->depth;
|
|
format->nChannels = adec->channels;
|
|
format->nBlockAlign = adec->channels * (adec->depth / 8);
|
|
format->nSamplesPerSec = adec->rate;
|
|
format->nAvgBytesPerSec = format->nBlockAlign * adec->rate;
|
|
|
|
mediatype = (AM_MEDIA_TYPE *)g_malloc0(sizeof (AM_MEDIA_TYPE));
|
|
mediatype->majortype = MEDIATYPE_Audio;
|
|
GUID subtype = GUID_MEDIASUBTYPE_FROM_FOURCC (WAVE_FORMAT_PCM);
|
|
mediatype->subtype = subtype;
|
|
mediatype->bFixedSizeSamples = TRUE;
|
|
mediatype->bTemporalCompression = FALSE;
|
|
mediatype->lSampleSize = format->nBlockAlign;
|
|
mediatype->formattype = FORMAT_WaveFormatEx;
|
|
mediatype->cbFormat = sizeof (WAVEFORMATEX);
|
|
mediatype->pbFormat = (BYTE *)format;
|
|
|
|
return mediatype;
|
|
}
|
|
|
|
static void
|
|
dshowadec_free_mediatype (AM_MEDIA_TYPE *mediatype)
|
|
{
|
|
g_free (mediatype->pbFormat);
|
|
g_free (mediatype);
|
|
}
|
|
|
|
static gboolean
|
|
gst_dshowaudiodec_setup_graph (GstDshowAudioDec * adec, GstCaps *caps)
|
|
{
|
|
gboolean ret = FALSE;
|
|
GstDshowAudioDecClass *klass =
|
|
(GstDshowAudioDecClass *) G_OBJECT_GET_CLASS (adec);
|
|
HRESULT hres;
|
|
GstCaps *outcaps = NULL;
|
|
AM_MEDIA_TYPE *output_mediatype = NULL;
|
|
AM_MEDIA_TYPE *input_mediatype = NULL;
|
|
IPinPtr output_pin = NULL;
|
|
IPinPtr input_pin = NULL;
|
|
const AudioCodecEntry *codec_entry = klass->entry;
|
|
IBaseFilterPtr srcfilter;
|
|
IBaseFilterPtr sinkfilter;
|
|
GstAudioInfo audio_info;
|
|
|
|
input_mediatype = dshowaudiodec_set_input_format (adec, caps);
|
|
|
|
adec->fakesrc->GetOutputPin()->SetMediaType (input_mediatype);
|
|
|
|
srcfilter = adec->fakesrc;
|
|
|
|
/* connect our fake source to decoder */
|
|
output_pin = gst_dshow_get_pin_from_filter (srcfilter, PINDIR_OUTPUT);
|
|
if (!output_pin) {
|
|
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
|
|
("Can't get output pin from our directshow fakesrc filter"), (NULL));
|
|
goto end;
|
|
}
|
|
input_pin = gst_dshow_get_pin_from_filter (adec->decfilter, PINDIR_INPUT);
|
|
if (!input_pin) {
|
|
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
|
|
("Can't get input pin from decoder filter"), (NULL));
|
|
goto end;
|
|
}
|
|
|
|
hres = adec->filtergraph->ConnectDirect (output_pin, input_pin,
|
|
NULL);
|
|
if (hres != S_OK) {
|
|
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
|
|
("Can't connect fakesrc with decoder (error=%x)", hres), (NULL));
|
|
goto end;
|
|
}
|
|
|
|
output_mediatype = dshowaudiodec_set_output_format (adec);
|
|
if (!output_mediatype) {
|
|
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
|
|
("Can't get audio output format from decoder"), (NULL));
|
|
goto end;
|
|
}
|
|
|
|
adec->fakesink->SetMediaType(output_mediatype);
|
|
|
|
gst_audio_info_init(&audio_info);
|
|
gst_audio_info_set_format(&audio_info,
|
|
gst_audio_format_build_integer(TRUE, G_BYTE_ORDER, adec->depth, adec->depth),
|
|
adec->rate, adec->channels, NULL);
|
|
|
|
outcaps = gst_audio_info_to_caps(&audio_info);
|
|
|
|
if (!gst_pad_set_caps (adec->srcpad, outcaps)) {
|
|
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
|
|
("Failed to negotiate output"), (NULL));
|
|
goto end;
|
|
}
|
|
|
|
/* connect the decoder to our fake sink */
|
|
output_pin = gst_dshow_get_pin_from_filter (adec->decfilter, PINDIR_OUTPUT);
|
|
if (!output_pin) {
|
|
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
|
|
("Can't get output pin from our decoder filter"), (NULL));
|
|
goto end;
|
|
}
|
|
|
|
sinkfilter = adec->fakesink;
|
|
input_pin = gst_dshow_get_pin_from_filter (sinkfilter, PINDIR_INPUT);
|
|
if (!input_pin) {
|
|
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
|
|
("Can't get input pin from our directshow fakesink filter"), (NULL));
|
|
goto end;
|
|
}
|
|
|
|
hres = adec->filtergraph->ConnectDirect(output_pin, input_pin, NULL);
|
|
if (hres != S_OK) {
|
|
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
|
|
("Can't connect decoder with fakesink (error=%x)", hres), (NULL));
|
|
goto end;
|
|
}
|
|
|
|
hres = adec->mediafilter->Run (-1);
|
|
if (hres != S_OK) {
|
|
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
|
|
("Can't run the directshow graph (error=%x)", hres), (NULL));
|
|
goto end;
|
|
}
|
|
|
|
ret = TRUE;
|
|
adec->setup = TRUE;
|
|
end:
|
|
if (outcaps)
|
|
gst_caps_unref(outcaps);
|
|
if (input_mediatype)
|
|
dshowadec_free_mediatype (input_mediatype);
|
|
if (output_mediatype)
|
|
dshowadec_free_mediatype (output_mediatype);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_dshowaudiodec_get_filter_settings (GstDshowAudioDec * adec)
|
|
{
|
|
IPinPtr output_pin;
|
|
IEnumMediaTypesPtr enum_mediatypes;
|
|
HRESULT hres;
|
|
ULONG fetched;
|
|
BOOL ret = FALSE;
|
|
|
|
if (adec->decfilter == 0)
|
|
return FALSE;
|
|
|
|
output_pin = gst_dshow_get_pin_from_filter (adec->decfilter, PINDIR_OUTPUT);
|
|
if (!output_pin) {
|
|
GST_ELEMENT_ERROR (adec, CORE, NEGOTIATION,
|
|
("failed getting output 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 (!ret && enum_mediatypes->Next(1, &mediatype, &fetched) == S_OK)
|
|
{
|
|
if (IsEqualGUID (mediatype->subtype, MEDIASUBTYPE_PCM) &&
|
|
IsEqualGUID (mediatype->formattype, FORMAT_WaveFormatEx))
|
|
{
|
|
WAVEFORMATEX *audio_info = (WAVEFORMATEX *) mediatype->pbFormat;
|
|
|
|
adec->channels = audio_info->nChannels;
|
|
adec->depth = audio_info->wBitsPerSample;
|
|
adec->rate = audio_info->nSamplesPerSec;
|
|
ret = TRUE;
|
|
}
|
|
DeleteMediaType (mediatype);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static gboolean
|
|
gst_dshowaudiodec_create_graph_and_filters (GstDshowAudioDec * adec)
|
|
{
|
|
HRESULT hres;
|
|
GstDshowAudioDecClass *klass =
|
|
(GstDshowAudioDecClass *) G_OBJECT_GET_CLASS (adec);
|
|
IBaseFilterPtr srcfilter;
|
|
IBaseFilterPtr sinkfilter;
|
|
GUID insubtype = GUID_MEDIASUBTYPE_FROM_FOURCC (klass->entry->format);
|
|
GUID outsubtype = GUID_MEDIASUBTYPE_FROM_FOURCC (WAVE_FORMAT_PCM);
|
|
|
|
/* create the filter graph manager object */
|
|
hres = adec->filtergraph.CreateInstance (
|
|
CLSID_FilterGraph, NULL, CLSCTX_INPROC);
|
|
if (FAILED (hres)) {
|
|
GST_ELEMENT_ERROR (adec, STREAM, FAILED,
|
|
("Can't create an instance of the directshow graph manager (error=%d)",
|
|
hres), (NULL));
|
|
goto error;
|
|
}
|
|
|
|
hres = adec->filtergraph->QueryInterface (&adec->mediafilter);
|
|
if (FAILED (hres)) {
|
|
GST_WARNING_OBJECT (adec, "Can't QI filtergraph to mediafilter");
|
|
goto error;
|
|
}
|
|
|
|
/* create fake src filter */
|
|
adec->fakesrc = new FakeSrc();
|
|
/* Created with a refcount of zero, so increment that */
|
|
adec->fakesrc->AddRef();
|
|
|
|
/* create decoder filter */
|
|
adec->decfilter = gst_dshow_find_filter (MEDIATYPE_Audio,
|
|
insubtype,
|
|
MEDIATYPE_Audio,
|
|
outsubtype,
|
|
klass->entry->preferred_filters);
|
|
if (adec->decfilter == NULL) {
|
|
GST_ELEMENT_ERROR (adec, STREAM, FAILED,
|
|
("Can't create an instance of the decoder filter"), (NULL));
|
|
goto error;
|
|
}
|
|
|
|
/* create fake sink filter */
|
|
adec->fakesink = new AudioFakeSink(adec);
|
|
/* Created with a refcount of zero, so increment that */
|
|
adec->fakesink->AddRef();
|
|
|
|
/* add filters to the graph */
|
|
srcfilter = adec->fakesrc;
|
|
hres = adec->filtergraph->AddFilter (srcfilter, L"src");
|
|
if (hres != S_OK) {
|
|
GST_ELEMENT_ERROR (adec, STREAM, FAILED,
|
|
("Can't add fakesrc filter to the graph (error=%d)", hres), (NULL));
|
|
goto error;
|
|
}
|
|
|
|
hres = adec->filtergraph->AddFilter(adec->decfilter, L"decoder");
|
|
if (hres != S_OK) {
|
|
GST_ELEMENT_ERROR (adec, STREAM, FAILED,
|
|
("Can't add decoder filter to the graph (error=%d)", hres), (NULL));
|
|
goto error;
|
|
}
|
|
|
|
sinkfilter = adec->fakesink;
|
|
hres = adec->filtergraph->AddFilter(sinkfilter, L"sink");
|
|
if (hres != S_OK) {
|
|
GST_ELEMENT_ERROR (adec, STREAM, FAILED,
|
|
("Can't add fakesink filter to the graph (error=%d)", hres), (NULL));
|
|
goto error;
|
|
}
|
|
|
|
return TRUE;
|
|
|
|
error:
|
|
if (adec->fakesrc) {
|
|
adec->fakesrc->Release();
|
|
adec->fakesrc = NULL;
|
|
}
|
|
if (adec->fakesink) {
|
|
adec->fakesink->Release();
|
|
adec->fakesink = NULL;
|
|
}
|
|
adec->decfilter = 0;
|
|
adec->mediafilter = 0;
|
|
adec->filtergraph = 0;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static gboolean
|
|
gst_dshowaudiodec_destroy_graph_and_filters (GstDshowAudioDec * adec)
|
|
{
|
|
if (adec->mediafilter) {
|
|
adec->mediafilter->Stop();
|
|
}
|
|
|
|
if (adec->fakesrc) {
|
|
if (adec->filtergraph) {
|
|
IBaseFilterPtr filter = adec->fakesrc;
|
|
adec->filtergraph->RemoveFilter(filter);
|
|
}
|
|
adec->fakesrc->Release();
|
|
adec->fakesrc = NULL;
|
|
}
|
|
if (adec->decfilter) {
|
|
if (adec->filtergraph)
|
|
adec->filtergraph->RemoveFilter(adec->decfilter);
|
|
adec->decfilter = 0;
|
|
}
|
|
if (adec->fakesink) {
|
|
if (adec->filtergraph) {
|
|
IBaseFilterPtr filter = adec->fakesink;
|
|
adec->filtergraph->RemoveFilter(filter);
|
|
}
|
|
|
|
adec->fakesink->Release();
|
|
adec->fakesink = NULL;
|
|
}
|
|
adec->mediafilter = 0;
|
|
adec->filtergraph = 0;
|
|
|
|
adec->setup = FALSE;
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
gboolean
|
|
dshow_adec_register (GstPlugin * plugin)
|
|
{
|
|
GTypeInfo info = {
|
|
sizeof (GstDshowAudioDecClass),
|
|
(GBaseInitFunc) gst_dshowaudiodec_base_init,
|
|
NULL,
|
|
(GClassInitFunc) gst_dshowaudiodec_class_init,
|
|
NULL,
|
|
NULL,
|
|
sizeof (GstDshowAudioDec),
|
|
0,
|
|
(GInstanceInitFunc) gst_dshowaudiodec_init,
|
|
};
|
|
gint i;
|
|
HRESULT hr;
|
|
|
|
GST_DEBUG_CATEGORY_INIT (dshowaudiodec_debug, "dshowaudiodec", 0,
|
|
"Directshow filter audio decoder");
|
|
|
|
hr = CoInitialize(0);
|
|
for (i = 0; i < sizeof (audio_dec_codecs) / sizeof (AudioCodecEntry); i++) {
|
|
GType type;
|
|
IBaseFilterPtr filter;
|
|
GUID insubtype = GUID_MEDIASUBTYPE_FROM_FOURCC (audio_dec_codecs[i].format);
|
|
GUID outsubtype = GUID_MEDIASUBTYPE_FROM_FOURCC (WAVE_FORMAT_PCM);
|
|
|
|
filter = gst_dshow_find_filter (MEDIATYPE_Audio,
|
|
insubtype,
|
|
MEDIATYPE_Audio,
|
|
outsubtype,
|
|
audio_dec_codecs[i].preferred_filters);
|
|
|
|
if (filter)
|
|
{
|
|
GST_DEBUG ("Registering %s", audio_dec_codecs[i].element_name);
|
|
|
|
type = g_type_register_static (GST_TYPE_ELEMENT,
|
|
audio_dec_codecs[i].element_name, &info, (GTypeFlags)0);
|
|
g_type_set_qdata (type, DSHOW_CODEC_QDATA, (gpointer) (audio_dec_codecs + i));
|
|
if (!gst_element_register (plugin, audio_dec_codecs[i].element_name,
|
|
GST_RANK_MARGINAL, type)) {
|
|
return FALSE;
|
|
}
|
|
GST_CAT_DEBUG (dshowaudiodec_debug, "Registered %s",
|
|
audio_dec_codecs[i].element_name);
|
|
}
|
|
else {
|
|
GST_DEBUG ("Element %s not registered "
|
|
"(the format is not supported by the system)",
|
|
audio_dec_codecs[i].element_name);
|
|
}
|
|
}
|
|
|
|
if (SUCCEEDED(hr))
|
|
CoUninitialize ();
|
|
|
|
return TRUE;
|
|
}
|