mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
60 lines
1.8 KiB
C
60 lines
1.8 KiB
C
/*
|
|
* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Cook audio parser
|
|
*
|
|
* Determines subpacket duration from extradata.
|
|
*/
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "libavutil/intreadwrite.h"
|
|
#include "parser.h"
|
|
|
|
typedef struct CookParseContext {
|
|
int duration;
|
|
} CookParseContext;
|
|
|
|
static int cook_parse(AVCodecParserContext *s1, AVCodecContext *avctx,
|
|
const uint8_t **poutbuf, int *poutbuf_size,
|
|
const uint8_t *buf, int buf_size)
|
|
{
|
|
CookParseContext *s = s1->priv_data;
|
|
|
|
if (s->duration)
|
|
s1->duration = s->duration;
|
|
else if (avctx->extradata && avctx->extradata_size >= 8 && avctx->channels)
|
|
s->duration = AV_RB16(avctx->extradata + 4) / avctx->channels;
|
|
|
|
/* always return the full packet. this parser isn't doing any splitting or
|
|
combining, only setting packet duration */
|
|
*poutbuf = buf;
|
|
*poutbuf_size = buf_size;
|
|
return buf_size;
|
|
}
|
|
|
|
AVCodecParser ff_cook_parser = {
|
|
.codec_ids = { AV_CODEC_ID_COOK },
|
|
.priv_data_size = sizeof(CookParseContext),
|
|
.parser_parse = cook_parse,
|
|
};
|