Libav
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00001 /* 00002 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> 00003 * 00004 * This file is part of FFmpeg. 00005 * 00006 * FFmpeg is free software; you can redistribute it and/or 00007 * modify it under the terms of the GNU Lesser General Public 00008 * License as published by the Free Software Foundation; either 00009 * version 2.1 of the License, or (at your option) any later version. 00010 * 00011 * FFmpeg is distributed in the hope that it will be useful, 00012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00014 * Lesser General Public License for more details. 00015 * 00016 * You should have received a copy of the GNU Lesser General Public 00017 * License along with FFmpeg; if not, write to the Free Software 00018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 00019 */ 00020 00021 #include "avcodec.h" 00022 00023 static AVBitStreamFilter *first_bitstream_filter= NULL; 00024 00025 AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f){ 00026 if(f) return f->next; 00027 else return first_bitstream_filter; 00028 } 00029 00030 void av_register_bitstream_filter(AVBitStreamFilter *bsf){ 00031 bsf->next = first_bitstream_filter; 00032 first_bitstream_filter= bsf; 00033 } 00034 00035 AVBitStreamFilterContext *av_bitstream_filter_init(const char *name){ 00036 AVBitStreamFilter *bsf= first_bitstream_filter; 00037 00038 while(bsf){ 00039 if(!strcmp(name, bsf->name)){ 00040 AVBitStreamFilterContext *bsfc= av_mallocz(sizeof(AVBitStreamFilterContext)); 00041 bsfc->filter= bsf; 00042 bsfc->priv_data= av_mallocz(bsf->priv_data_size); 00043 return bsfc; 00044 } 00045 bsf= bsf->next; 00046 } 00047 return NULL; 00048 } 00049 00050 void av_bitstream_filter_close(AVBitStreamFilterContext *bsfc){ 00051 if(bsfc->filter->close) 00052 bsfc->filter->close(bsfc); 00053 av_freep(&bsfc->priv_data); 00054 av_parser_close(bsfc->parser); 00055 av_free(bsfc); 00056 } 00057 00058 int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc, 00059 AVCodecContext *avctx, const char *args, 00060 uint8_t **poutbuf, int *poutbuf_size, 00061 const uint8_t *buf, int buf_size, int keyframe){ 00062 *poutbuf= (uint8_t *) buf; 00063 *poutbuf_size= buf_size; 00064 return bsfc->filter->filter(bsfc, avctx, args, poutbuf, poutbuf_size, buf, buf_size, keyframe); 00065 }