/* * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> * * This file is part of Libav. * * Libav is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * Libav is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ #include "avcodec.h" static AVBitStreamFilter *first_bitstream_filter= NULL; AVBitStreamFilter *av_bitstream_filter_next(AVBitStreamFilter *f){    if(f) return f->next;    else  return first_bitstream_filter;} void av_register_bitstream_filter(AVBitStreamFilter *bsf){    bsf->next = first_bitstream_filter;    first_bitstream_filter= bsf;} AVBitStreamFilterContext *av_bitstream_filter_init(const char *name){    AVBitStreamFilter *bsf= first_bitstream_filter;     while(bsf){        if(!strcmp(name, bsf->name)){            AVBitStreamFilterContext *bsfc= av_mallocz(sizeof(AVBitStreamFilterContext));            bsfc->filter= bsf;            bsfc->priv_data = bsf->priv_data_size ? av_mallocz(bsf->priv_data_size) : NULL;            return bsfc;        }        bsf= bsf->next;    }    return NULL;} void av_bitstream_filter_close(AVBitStreamFilterContext *bsfc){    if(bsfc->filter->close)        bsfc->filter->close(bsfc);    av_freep(&bsfc->priv_data);    av_parser_close(bsfc->parser);    av_free(bsfc);} int av_bitstream_filter_filter(AVBitStreamFilterContext *bsfc,                               AVCodecContext *avctx, const char *args,                     uint8_t **poutbuf, int *poutbuf_size,                     const uint8_t *buf, int buf_size, int keyframe){    *poutbuf= (uint8_t *) buf;    *poutbuf_size= buf_size;    return bsfc->filter->filter(bsfc, avctx, args, poutbuf, poutbuf_size, buf, buf_size, keyframe);}