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108 lines
3 KiB
C
108 lines
3 KiB
C
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/* GStreamer
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* Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
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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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#ifndef __GST_FFMPEGAUDDEC_H__
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#define __GST_FFMPEGAUDDEC_H__
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G_BEGIN_DECLS
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#include <gst/gst.h>
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#include <libavcodec/avcodec.h>
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#define MAX_TS_MASK 0xff
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/* for each incomming buffer we keep all timing info in a structure like this.
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* We keep a circular array of these structures around to store the timing info.
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* The index in the array is what we pass as opaque data (to pictures) and
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* pts (to parsers) so that ffmpeg can remember them for us. */
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typedef struct
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{
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gint idx;
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GstClockTime dts;
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GstClockTime pts;
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GstClockTime duration;
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gint64 offset;
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} GstTSInfo;
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typedef struct _GstFFMpegAudDec GstFFMpegAudDec;
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struct _GstFFMpegAudDec
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{
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GstElement element;
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/* We need to keep track of our pads, so we do so here. */
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GstPad *srcpad;
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GstPad *sinkpad;
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/* decoding */
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AVCodecContext *context;
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gboolean opened;
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/* current output format */
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gint channels, samplerate, depth;
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GstAudioChannelPosition ffmpeg_layout[64], gst_layout[64];
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gboolean discont;
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gboolean clear_ts;
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/* for tracking DTS/PTS */
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GstClockTime next_out;
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/* parsing */
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gboolean turnoff_parser; /* used for turning off aac raw parsing
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* See bug #566250 */
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AVCodecParserContext *pctx;
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GstBuffer *pcache;
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/* clipping segment */
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GstSegment segment;
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GstTSInfo ts_info[MAX_TS_MASK + 1];
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gint ts_idx;
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/* reverse playback queue */
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GList *queued;
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/* prevent reopening the decoder on GST_EVENT_CAPS when caps are same as last time. */
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GstCaps *last_caps;
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};
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typedef struct _GstFFMpegAudDecClass GstFFMpegAudDecClass;
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struct _GstFFMpegAudDecClass
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{
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GstElementClass parent_class;
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AVCodec *in_plugin;
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GstPadTemplate *srctempl, *sinktempl;
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};
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#define GST_TYPE_FFMPEGDEC \
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(gst_ffmpegauddec_get_type())
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#define GST_FFMPEGDEC(obj) \
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(G_TYPE_CHECK_INSTANCE_CAST((obj),GST_TYPE_FFMPEGDEC,GstFFMpegAudDec))
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#define GST_FFMPEGAUDDEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_CAST((klass),GST_TYPE_FFMPEGDEC,GstFFMpegAudDecClass))
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#define GST_IS_FFMPEGDEC(obj) \
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(G_TYPE_CHECK_INSTANCE_TYPE((obj),GST_TYPE_FFMPEGDEC))
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#define GST_IS_FFMPEGAUDDEC_CLASS(klass) \
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(G_TYPE_CHECK_CLASS_TYPE((klass),GST_TYPE_FFMPEGDEC))
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G_END_DECLS
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#endif
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