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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 | ||
24 | static int remove_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 | AVCodecParserContext *s; | |
29 | ||
30 | if(!bsfc->parser){ | |
31 | bsfc->parser= av_parser_init(avctx->codec_id); | |
32 | } | |
33 | s= bsfc->parser; | |
34 | ||
35 | if(s && s->parser->split){ | |
36 | if( (((avctx->flags & CODEC_FLAG_GLOBAL_HEADER) || (avctx->flags2 & CODEC_FLAG2_LOCAL_HEADER)) && cmd=='a') | |
37 | ||(!keyframe && cmd=='k') | |
38 | ||(cmd=='e' || !cmd) | |
39 | ){ | |
40 | int i= s->parser->split(avctx, buf, buf_size); | |
41 | buf += i; | |
42 | buf_size -= i; | |
43 | } | |
44 | } | |
45 | *poutbuf= (uint8_t *) buf; | |
46 | *poutbuf_size= buf_size; | |
47 | ||
48 | return 0; | |
49 | } | |
50 | ||
51 | AVBitStreamFilter ff_remove_extradata_bsf={ | |
52 | .name = "remove_extra", | |
53 | .filter = remove_extradata, | |
54 | }; |