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 dump_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 /* cast to avoid warning about discarding qualifiers */ 29 if(avctx->extradata){ 30 if( (keyframe && (avctx->flags2 & CODEC_FLAG2_LOCAL_HEADER) && cmd=='a') 31 ||(keyframe && (cmd=='k' || !cmd)) 32 ||(cmd=='e') 33 /*||(? && (s->flags & PARSER_FLAG_DUMP_EXTRADATA_AT_BEGIN)*/){ 34 int size= buf_size + avctx->extradata_size; 35 *poutbuf_size= size; 36 *poutbuf= av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE); 37 38 memcpy(*poutbuf, avctx->extradata, avctx->extradata_size); 39 memcpy((*poutbuf) + avctx->extradata_size, buf, buf_size + FF_INPUT_BUFFER_PADDING_SIZE); 40 return 1; 41 } 42 } 43 return 0; 44} 45 46AVBitStreamFilter dump_extradata_bsf={ 47 "dump_extra", 48 0, 49 dump_extradata, 50}; 51