yading@10: /*
yading@10:  * Copyright (C) 2007  FFmpeg Project
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #ifndef AVCODEC_XIPH_H
yading@10: #define AVCODEC_XIPH_H
yading@10: 
yading@10: #include "libavutil/common.h"
yading@10: 
yading@10: /**
yading@10:  * Split a single extradata buffer into the three headers that most
yading@10:  * Xiph codecs use. (e.g. Theora and Vorbis)
yading@10:  * Works both with Matroska's packing and lavc's packing.
yading@10:  *
yading@10:  * @param[in] extradata The single chunk that combines all three headers
yading@10:  * @param[in] extradata_size The size of the extradata buffer
yading@10:  * @param[in] first_header_size The size of the first header, used to
yading@10:  * differentiate between the Matroska packing and lavc packing.
yading@10:  * @param[out] header_start Pointers to the start of the three separate headers.
yading@10:  * @param[out] header_len The sizes of each of the three headers.
yading@10:  * @return On error a negative value is returned, on success zero.
yading@10:  */
yading@10: int avpriv_split_xiph_headers(uint8_t *extradata, int extradata_size,
yading@10:                               int first_header_size, uint8_t *header_start[3],
yading@10:                               int header_len[3]);
yading@10: 
yading@10: #endif /* AVCODEC_XIPH_H */