/*
  * 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 &&
                 avctx->extradata && avctx->extradata_size >= 8 && avctx->channels)

         s->duration = AV_RB16(avctx->extradata + 4) / avctx->channels;
 

     s1->duration = s->duration;
 

     /* 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,
 };