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