1cabdff1aSopenharmony_ci/* 2cabdff1aSopenharmony_ci * Copyright (C) 2007 The FFmpeg Project 3cabdff1aSopenharmony_ci * 4cabdff1aSopenharmony_ci * This file is part of FFmpeg. 5cabdff1aSopenharmony_ci * 6cabdff1aSopenharmony_ci * FFmpeg is free software; you can redistribute it and/or 7cabdff1aSopenharmony_ci * modify it under the terms of the GNU Lesser General Public 8cabdff1aSopenharmony_ci * License as published by the Free Software Foundation; either 9cabdff1aSopenharmony_ci * version 2.1 of the License, or (at your option) any later version. 10cabdff1aSopenharmony_ci * 11cabdff1aSopenharmony_ci * FFmpeg is distributed in the hope that it will be useful, 12cabdff1aSopenharmony_ci * but WITHOUT ANY WARRANTY; without even the implied warranty of 13cabdff1aSopenharmony_ci * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14cabdff1aSopenharmony_ci * Lesser General Public License for more details. 15cabdff1aSopenharmony_ci * 16cabdff1aSopenharmony_ci * You should have received a copy of the GNU Lesser General Public 17cabdff1aSopenharmony_ci * License along with FFmpeg; if not, write to the Free Software 18cabdff1aSopenharmony_ci * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19cabdff1aSopenharmony_ci */ 20cabdff1aSopenharmony_ci 21cabdff1aSopenharmony_ci#ifndef AVCODEC_XIPH_H 22cabdff1aSopenharmony_ci#define AVCODEC_XIPH_H 23cabdff1aSopenharmony_ci 24cabdff1aSopenharmony_ci#include <stdint.h> 25cabdff1aSopenharmony_ci 26cabdff1aSopenharmony_ci/** 27cabdff1aSopenharmony_ci * Split a single extradata buffer into the three headers that most 28cabdff1aSopenharmony_ci * Xiph codecs use. (e.g. Theora and Vorbis) 29cabdff1aSopenharmony_ci * Works both with Matroska's packing and lavc's packing. 30cabdff1aSopenharmony_ci * 31cabdff1aSopenharmony_ci * @param[in] extradata The single chunk that combines all three headers 32cabdff1aSopenharmony_ci * @param[in] extradata_size The size of the extradata buffer 33cabdff1aSopenharmony_ci * @param[in] first_header_size The size of the first header, used to 34cabdff1aSopenharmony_ci * differentiate between the Matroska packing and lavc packing. 35cabdff1aSopenharmony_ci * @param[out] header_start Pointers to the start of the three separate headers. 36cabdff1aSopenharmony_ci * @param[out] header_len The sizes of each of the three headers. 37cabdff1aSopenharmony_ci * @return On error a negative value is returned, on success zero. 38cabdff1aSopenharmony_ci */ 39cabdff1aSopenharmony_ciint avpriv_split_xiph_headers(const uint8_t *extradata, int extradata_size, 40cabdff1aSopenharmony_ci int first_header_size, const uint8_t *header_start[3], 41cabdff1aSopenharmony_ci int header_len[3]); 42cabdff1aSopenharmony_ci 43cabdff1aSopenharmony_ci#endif /* AVCODEC_XIPH_H */ 44