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 "avcodec.h"
22
23static AVBitStreamFilter *first_bitstream_filter= NULL;
24
25AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f){
26    if(f) return f->next;
27    else  return first_bitstream_filter;
28}
29
30void av_register_bitstream_filter(AVBitStreamFilter *bsf){
31    bsf->next = first_bitstream_filter;
32    first_bitstream_filter= bsf;
33}
34
35AVBitStreamFilterContext *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
50void 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
58int 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}
66