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 23 24static int remove_extradata(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args, 25 uint8_t **poutbuf, int *poutbuf_size, 26 const uint8_t *buf, int buf_size, int keyframe){ 27 int cmd= args ? *args : 0; 28 AVCodecParserContext *s; 29 30 if(!bsfc->parser){ 31 bsfc->parser= av_parser_init(avctx->codec_id); 32 } 33 s= bsfc->parser; 34 35 if(s && s->parser->split){ 36 if( (((avctx->flags & CODEC_FLAG_GLOBAL_HEADER) || (avctx->flags2 & CODEC_FLAG2_LOCAL_HEADER)) && cmd=='a') 37 ||(!keyframe && cmd=='k') 38 ||(cmd=='e' || !cmd) 39 ){ 40 int i= s->parser->split(avctx, buf, buf_size); 41 buf += i; 42 buf_size -= i; 43 } 44 } 45 *poutbuf= (uint8_t *) buf; 46 *poutbuf_size= buf_size; 47 48 return 0; 49} 50 51AVBitStreamFilter remove_extradata_bsf={ 52 "remove_extra", 53 0, 54 remove_extradata, 55}; 56