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ffmpeg / libavcodec / remove_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 remove_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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    AVCodecParserContext *s;
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    if(!bsfc->parser){
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        bsfc->parser= av_parser_init(avctx->codec_id);
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    }
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    s= bsfc->parser;
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    if(s && s->parser->split){
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        if(  (((avctx->flags & CODEC_FLAG_GLOBAL_HEADER) || (avctx->flags2 & CODEC_FLAG2_LOCAL_HEADER)) && cmd=='a')
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           ||(!keyframe && cmd=='k')
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           ||(cmd=='e' || !cmd)
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          ){
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            int i= s->parser->split(avctx, buf, buf_size);
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            buf += i;
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            buf_size -= i;
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        }
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    }
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    *poutbuf= (uint8_t *) buf;
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    *poutbuf_size= buf_size;
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    return 0;
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}
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AVBitStreamFilter ff_remove_extradata_bsf={
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    "remove_extra",
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    0,
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    remove_extradata,
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};