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/*
* Copyright (c) 2012 Justin Ruggles <justin.ruggles@gmail.com>
*
* This file is part of Libav.
*
* Libav 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.
*
* Libav 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 Libav; 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,
};
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