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2ba45a60 DM |
1 | /* |
2 | * Chomp bitstream filter | |
3 | * Copyright (c) 2010 Alex Converse <alex.converse@gmail.com> | |
4 | * | |
5 | * This file is part of FFmpeg. | |
6 | * | |
7 | * FFmpeg is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU Lesser General Public | |
9 | * License as published by the Free Software Foundation; either | |
10 | * version 2.1 of the License, or (at your option) any later version. | |
11 | * | |
12 | * FFmpeg is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * Lesser General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU Lesser General Public | |
18 | * License along with FFmpeg; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #include "avcodec.h" | |
23 | #include "internal.h" | |
24 | ||
25 | static int chomp_filter(AVBitStreamFilterContext *bsfc, | |
26 | AVCodecContext *avctx, const char *args, | |
27 | uint8_t **poutbuf, int *poutbuf_size, | |
28 | const uint8_t *buf, int buf_size, | |
29 | int keyframe) | |
30 | { | |
31 | while (buf_size > 0 && !buf[buf_size-1]) | |
32 | buf_size--; | |
33 | ||
34 | *poutbuf = (uint8_t*) buf; | |
35 | *poutbuf_size = buf_size; | |
36 | ||
37 | return 0; | |
38 | } | |
39 | ||
40 | /** | |
41 | * This filter removes a string of NULL bytes from the end of a packet. | |
42 | */ | |
43 | AVBitStreamFilter ff_chomp_bsf = { | |
44 | .name = "chomp", | |
45 | .filter = chomp_filter, | |
46 | }; |