FFmpeg
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bitstream_filter.c
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1 /*
2  * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg 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  * FFmpeg 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 FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20 
21 #include <string.h>
22 
23 #include "avcodec.h"
24 #include "libavutil/mem.h"
25 
27 
29  if(f) return f->next;
30  else return first_bitstream_filter;
31 }
32 
35  first_bitstream_filter= bsf;
36 }
37 
40 
41  while(bsf){
42  if(!strcmp(name, bsf->name)){
44  bsfc->filter= bsf;
45  bsfc->priv_data = bsf->priv_data_size ? av_mallocz(bsf->priv_data_size) : NULL;
46  return bsfc;
47  }
48  bsf= bsf->next;
49  }
50  return NULL;
51 }
52 
54  if(bsfc->filter->close)
55  bsfc->filter->close(bsfc);
56  av_freep(&bsfc->priv_data);
57  av_parser_close(bsfc->parser);
58  av_free(bsfc);
59 }
60 
62  AVCodecContext *avctx, const char *args,
63  uint8_t **poutbuf, int *poutbuf_size,
64  const uint8_t *buf, int buf_size, int keyframe){
65  *poutbuf= (uint8_t *) buf;
66  *poutbuf_size= buf_size;
67  return bsfc->filter->filter(bsfc, avctx, args, poutbuf, poutbuf_size, buf, buf_size, keyframe);
68 }