dump_extradata_bsf.c
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1 /*
2  * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of Libav.
5  *
6  * Libav is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * Libav is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with Libav; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include "avcodec.h"
22 
23 
24 static int dump_extradata(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
25  uint8_t **poutbuf, int *poutbuf_size,
26  const uint8_t *buf, int buf_size, int keyframe){
27  int cmd= args ? *args : 0;
28  /* cast to avoid warning about discarding qualifiers */
29  if(avctx->extradata){
30  if( (keyframe && (avctx->flags2 & CODEC_FLAG2_LOCAL_HEADER) && cmd=='a')
31  ||(keyframe && (cmd=='k' || !cmd))
32  ||(cmd=='e')
33  /*||(? && (s->flags & PARSER_FLAG_DUMP_EXTRADATA_AT_BEGIN)*/){
34  int size= buf_size + avctx->extradata_size;
35  *poutbuf_size= size;
36  *poutbuf= av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
37 
38  memcpy(*poutbuf, avctx->extradata, avctx->extradata_size);
39  memcpy((*poutbuf) + avctx->extradata_size, buf, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
40  return 1;
41  }
42  }
43  return 0;
44 }
45 
47  "dump_extra",
48  0,
50 };