blob: 1741a51b65d5654ebc960dec089b4f3a9ccc8a2e
1 | /* |
2 | * Copyright (C) 2007 The FFmpeg Project |
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 | #ifndef AVCODEC_XIPH_H |
22 | #define AVCODEC_XIPH_H |
23 | |
24 | #include "libavutil/common.h" |
25 | |
26 | /** |
27 | * Split a single extradata buffer into the three headers that most |
28 | * Xiph codecs use. (e.g. Theora and Vorbis) |
29 | * Works both with Matroska's packing and lavc's packing. |
30 | * |
31 | * @param[in] extradata The single chunk that combines all three headers |
32 | * @param[in] extradata_size The size of the extradata buffer |
33 | * @param[in] first_header_size The size of the first header, used to |
34 | * differentiate between the Matroska packing and lavc packing. |
35 | * @param[out] header_start Pointers to the start of the three separate headers. |
36 | * @param[out] header_len The sizes of each of the three headers. |
37 | * @return On error a negative value is returned, on success zero. |
38 | */ |
39 | int avpriv_split_xiph_headers(const uint8_t *extradata, int extradata_size, |
40 | int first_header_size, const uint8_t *header_start[3], |
41 | int header_len[3]); |
42 | |
43 | #endif /* AVCODEC_XIPH_H */ |
44 |