mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-23 15:53:08 +00:00
e846617b82
Reviewed-by: Lynne <dev@lynne.ee> Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
78 lines
2.8 KiB
C
78 lines
2.8 KiB
C
/*
|
|
* Opus decoder/parser common functions and structures
|
|
* Copyright (c) 2012 Andrew D'Addesio
|
|
* Copyright (c) 2013-2014 Mozilla Corporation
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef AVCODEC_OPUS_PARSE_H
|
|
#define AVCODEC_OPUS_PARSE_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "avcodec.h"
|
|
#include "opus.h"
|
|
|
|
typedef struct OpusPacket {
|
|
int packet_size; /**< packet size */
|
|
int data_size; /**< size of the useful data -- packet size - padding */
|
|
int code; /**< packet code: specifies the frame layout */
|
|
int stereo; /**< whether this packet is mono or stereo */
|
|
int vbr; /**< vbr flag */
|
|
int config; /**< configuration: tells the audio mode,
|
|
** bandwidth, and frame duration */
|
|
int frame_count; /**< frame count */
|
|
int frame_offset[OPUS_MAX_FRAMES]; /**< frame offsets */
|
|
int frame_size[OPUS_MAX_FRAMES]; /**< frame sizes */
|
|
int frame_duration; /**< frame duration, in samples @ 48kHz */
|
|
enum OpusMode mode; /**< mode */
|
|
enum OpusBandwidth bandwidth; /**< bandwidth */
|
|
} OpusPacket;
|
|
|
|
// a mapping between an opus stream and an output channel
|
|
typedef struct ChannelMap {
|
|
int stream_idx;
|
|
int channel_idx;
|
|
|
|
// when a single decoded channel is mapped to multiple output channels, we
|
|
// write to the first output directly and copy from it to the others
|
|
// this field is set to 1 for those copied output channels
|
|
int copy;
|
|
// this is the index of the output channel to copy from
|
|
int copy_idx;
|
|
|
|
// this channel is silent
|
|
int silence;
|
|
} ChannelMap;
|
|
|
|
typedef struct OpusParseContext {
|
|
int nb_streams;
|
|
int nb_stereo_streams;
|
|
|
|
int16_t gain_i;
|
|
|
|
ChannelMap *channel_maps;
|
|
} OpusParseContext;
|
|
|
|
int ff_opus_parse_packet(OpusPacket *pkt, const uint8_t *buf, int buf_size,
|
|
int self_delimited);
|
|
|
|
int ff_opus_parse_extradata(AVCodecContext *avctx, OpusParseContext *s);
|
|
|
|
#endif /* AVCODEC_OPUS_PARSE_H */
|