0,0 → 1,59 |
/* |
* 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, |
}; |