• Main Page
  • Related Pages
  • Modules
  • Data Structures
  • Files
  • File List
  • Globals

libavcodec/remove_extradata_bsf.c

Go to the documentation of this file.
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 
00024 static int remove_extradata(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
00025                      uint8_t **poutbuf, int *poutbuf_size,
00026                      const uint8_t *buf, int buf_size, int keyframe){
00027     int cmd= args ? *args : 0;
00028     AVCodecParserContext *s;
00029 
00030     if(!bsfc->parser){
00031         bsfc->parser= av_parser_init(avctx->codec_id);
00032     }
00033     s= bsfc->parser;
00034 
00035     if(s && s->parser->split){
00036         if(  (((avctx->flags & CODEC_FLAG_GLOBAL_HEADER) || (avctx->flags2 & CODEC_FLAG2_LOCAL_HEADER)) && cmd=='a')
00037            ||(!keyframe && cmd=='k')
00038            ||(cmd=='e' || !cmd)
00039           ){
00040             int i= s->parser->split(avctx, buf, buf_size);
00041             buf += i;
00042             buf_size -= i;
00043         }
00044     }
00045     *poutbuf= (uint8_t *) buf;
00046     *poutbuf_size= buf_size;
00047 
00048     return 0;
00049 }
00050 
00051 AVBitStreamFilter remove_extradata_bsf={
00052     "remove_extra",
00053     0,
00054     remove_extradata,
00055 };

Generated on Fri Sep 16 2011 17:17:42 for FFmpeg by  doxygen 1.7.1