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ffmpeg / libavcodec / dump_extradata_bsf.c @ 2912e87a

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/*
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 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
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 *
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 * This file is part of Libav.
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 *
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 * Libav is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2.1 of the License, or (at your option) any later version.
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 *
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 * Libav is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with Libav; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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 */
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#include "avcodec.h"
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static int dump_extradata(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
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                     uint8_t **poutbuf, int *poutbuf_size,
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                     const uint8_t *buf, int buf_size, int keyframe){
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    int cmd= args ? *args : 0;
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    /* cast to avoid warning about discarding qualifiers */
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    if(avctx->extradata){
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        if(  (keyframe && (avctx->flags2 & CODEC_FLAG2_LOCAL_HEADER) && cmd=='a')
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           ||(keyframe && (cmd=='k' || !cmd))
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           ||(cmd=='e')
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            /*||(? && (s->flags & PARSER_FLAG_DUMP_EXTRADATA_AT_BEGIN)*/){
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            int size= buf_size + avctx->extradata_size;
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            *poutbuf_size= size;
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            *poutbuf= av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
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            memcpy(*poutbuf, avctx->extradata, avctx->extradata_size);
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            memcpy((*poutbuf) + avctx->extradata_size, buf, buf_size + FF_INPUT_BUFFER_PADDING_SIZE);
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            return 1;
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        }
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    }
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    return 0;
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}
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AVBitStreamFilter ff_dump_extradata_bsf={
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    "dump_extra",
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    0,
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    dump_extradata,
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};