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