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libavcodec/dump_extradata_bsf.c

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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 
00024 static int dump_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     /* cast to avoid warning about discarding qualifiers */
00029     if(avctx->extradata){
00030         if(  (keyframe && (avctx->flags2 & CODEC_FLAG2_LOCAL_HEADER) && cmd=='a')
00031            ||(keyframe && (cmd=='k' || !cmd))
00032            ||(cmd=='e')
00033             /*||(? && (s->flags & PARSER_FLAG_DUMP_EXTRADATA_AT_BEGIN)*/){
00034             int size= buf_size + avctx->extradata_size;
00035             *poutbuf_size= size;
00036             *poutbuf= av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
00037 
00038             memcpy(*poutbuf, avctx->extradata, avctx->extradata_size);
00039             memcpy((*poutbuf) + avctx->extradata_size, buf, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
00040             return 1;
00041         }
00042     }
00043     return 0;
00044 }
00045 
00046 AVBitStreamFilter dump_extradata_bsf={
00047     "dump_extra",
00048     0,
00049     dump_extradata,
00050 };

Generated on Fri Sep 16 2011 17:17:35 for FFmpeg by  doxygen 1.7.1