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0fefecd53f
This reverts commit aa20d7b3e8.
Adding these avpriv functions is absolutely overblown: Muxers
can get the desired duration in a few lines themselves.
In particular, using the parse functions from this file
necessitated parsing the extradata (and entailed exporting
the parsing function), although it was only used to know
whether the frames are self-delimiting, but everything of
interest to a muxer does not depend on this at all.
The commit to be reverted also made several structures
part of the ABI, which should be avoided in general.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
/*
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* Opus decoder/parser common functions and structures
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* Copyright (c) 2012 Andrew D'Addesio
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* Copyright (c) 2013-2014 Mozilla Corporation
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg 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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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_OPUS_PARSE_H
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#define AVCODEC_OPUS_PARSE_H
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#include <stdint.h>
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#include "libavcodec/avcodec.h"
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#include "opus.h"
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typedef struct OpusPacket {
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int packet_size; /**< packet size */
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int data_size; /**< size of the useful data -- packet size - padding */
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int code; /**< packet code: specifies the frame layout */
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int stereo; /**< whether this packet is mono or stereo */
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int vbr; /**< vbr flag */
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int config; /**< configuration: tells the audio mode,
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** bandwidth, and frame duration */
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int frame_count; /**< frame count */
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int frame_offset[OPUS_MAX_FRAMES]; /**< frame offsets */
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int frame_size[OPUS_MAX_FRAMES]; /**< frame sizes */
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int frame_duration; /**< frame duration, in samples @ 48kHz */
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enum OpusMode mode; /**< mode */
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enum OpusBandwidth bandwidth; /**< bandwidth */
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} OpusPacket;
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// a mapping between an opus stream and an output channel
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typedef struct ChannelMap {
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int stream_idx;
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int channel_idx;
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// when a single decoded channel is mapped to multiple output channels, we
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// write to the first output directly and copy from it to the others
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// this field is set to 1 for those copied output channels
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int copy;
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// this is the index of the output channel to copy from
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int copy_idx;
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// this channel is silent
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int silence;
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} ChannelMap;
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typedef struct OpusParseContext {
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int nb_streams;
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int nb_stereo_streams;
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int16_t gain_i;
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ChannelMap *channel_maps;
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} OpusParseContext;
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int ff_opus_parse_packet(OpusPacket *pkt, const uint8_t *buf, int buf_size,
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int self_delimited);
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int ff_opus_parse_extradata(AVCodecContext *avctx, OpusParseContext *s);
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#endif /* AVCODEC_OPUS_PARSE_H */
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