| 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 | }; |