FFmpeg/libavcodec/xiph.h
Andreas Rheinhardt 636631d9db Remove unnecessary libavutil/(avutil|common|internal).h inclusions
Some of these were made possible by moving several common macros to
libavutil/macros.h.

While just at it, also improve the other headers a bit.

Reviewed-by: Martin Storsjö <martin@martin.st>
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2022-02-24 12:56:49 +01:00

44 lines
1.7 KiB
C

/*
* Copyright (C) 2007 The 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 <stdint.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(const uint8_t *extradata, int extradata_size,
int first_header_size, const uint8_t *header_start[3],
int header_len[3]);
#endif /* AVCODEC_XIPH_H */