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