Statistics
| Branch: | Revision:

ffmpeg / libavcodec / bitstream_filter.c @ 2912e87a

History | View | Annotate | Download (2.21 KB)

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
static AVBitStreamFilter *first_bitstream_filter= NULL;
24

    
25
AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f){
26
    if(f) return f->next;
27
    else  return first_bitstream_filter;
28
}
29

    
30
void av_register_bitstream_filter(AVBitStreamFilter *bsf){
31
    bsf->next = first_bitstream_filter;
32
    first_bitstream_filter= bsf;
33
}
34

    
35
AVBitStreamFilterContext *av_bitstream_filter_init(const char *name){
36
    AVBitStreamFilter *bsf= first_bitstream_filter;
37

    
38
    while(bsf){
39
        if(!strcmp(name, bsf->name)){
40
            AVBitStreamFilterContext *bsfc= av_mallocz(sizeof(AVBitStreamFilterContext));
41
            bsfc->filter= bsf;
42
            bsfc->priv_data= av_mallocz(bsf->priv_data_size);
43
            return bsfc;
44
        }
45
        bsf= bsf->next;
46
    }
47
    return NULL;
48
}
49

    
50
void av_bitstream_filter_close(AVBitStreamFilterContext *bsfc){
51
    if(bsfc->filter->close)
52
        bsfc->filter->close(bsfc);
53
    av_freep(&bsfc->priv_data);
54
    av_parser_close(bsfc->parser);
55
    av_free(bsfc);
56
}
57

    
58
int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
59
                               AVCodecContext *avctx, const char *args,
60
                     uint8_t **poutbuf, int *poutbuf_size,
61
                     const uint8_t *buf, int buf_size, int keyframe){
62
    *poutbuf= (uint8_t *) buf;
63
    *poutbuf_size= buf_size;
64
    return bsfc->filter->filter(bsfc, avctx, args, poutbuf, poutbuf_size, buf, buf_size, keyframe);
65
}