FFmpeg
xiph.h
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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 */
uint8_t
int avpriv_split_xiph_headers(const uint8_t *extradata, int extradata_size, int first_header_size, const uint8_t *header_start[3], int header_len[3])
Split a single extradata buffer into the three headers that most Xiph codecs use. ...
Definition: xiph.c:24
common internal and external API header