]> git.sesse.net Git - ffmpeg/blob - libavcodec/bitstream_filter.c
h264: check for luma and chroma bit dept being equal
[ffmpeg] / libavcodec / bitstream_filter.c
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 <string.h>
22
23 #include "avcodec.h"
24 #include "libavutil/mem.h"
25
26 static AVBitStreamFilter *first_bitstream_filter= NULL;
27
28 AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f){
29     if(f) return f->next;
30     else  return first_bitstream_filter;
31 }
32
33 void av_register_bitstream_filter(AVBitStreamFilter *bsf){
34     bsf->next = first_bitstream_filter;
35     first_bitstream_filter= bsf;
36 }
37
38 AVBitStreamFilterContext *av_bitstream_filter_init(const char *name){
39     AVBitStreamFilter *bsf= first_bitstream_filter;
40
41     while(bsf){
42         if(!strcmp(name, bsf->name)){
43             AVBitStreamFilterContext *bsfc= av_mallocz(sizeof(AVBitStreamFilterContext));
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
53 void av_bitstream_filter_close(AVBitStreamFilterContext *bsfc){
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
61 int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,
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 }