text: /*
   * 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 avpriv_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 */
  