/*
  * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
  *
  * 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
  */
 
 #include "avcodec.h"
 
 
 static int dump_extradata(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
                      uint8_t **poutbuf, int *poutbuf_size,
                      const uint8_t *buf, int buf_size, int keyframe){
     int cmd= args ? *args : 0;
     /* cast to avoid warning about discarding qualifiers */
     if(avctx->extradata){
         if(  (keyframe && (avctx->flags2 & CODEC_FLAG2_LOCAL_HEADER) && cmd=='a')
            ||(keyframe && (cmd=='k' || !cmd))
            ||(cmd=='e')
             /*||(? && (s->flags & PARSER_FLAG_DUMP_EXTRADATA_AT_BEGIN)*/){
             int size= buf_size + avctx->extradata_size;
             *poutbuf_size= size;
             *poutbuf= av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
 
             memcpy(*poutbuf, avctx->extradata, avctx->extradata_size);
             memcpy((*poutbuf) + avctx->extradata_size, buf, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
             return 1;
         }
     }
     return 0;
 }
 

 AVBitStreamFilter ff_dump_extradata_bsf={

     "dump_extra",
     0,
     dump_extradata,
 };