From 5bb127a98f3d7c8e4f3da4dfa5e8d697d5a2dbdc Mon Sep 17 00:00:00 2001 From: Aurelien Jacobs Date: Sun, 25 Mar 2007 01:06:45 +0000 Subject: extract vorbis header spliting code into a reusable function Original thread: Date: Thu, 22 Mar 2007 20:23:08 -0400 Subject: [Ffmpeg-devel] [PATCH] Theora in MKV (GSoC '07 Qualification) Originally committed as revision 8505 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/xiph.h | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 libavcodec/xiph.h (limited to 'libavcodec/xiph.h') diff --git a/libavcodec/xiph.h b/libavcodec/xiph.h new file mode 100644 index 0000000000..85cfeebaf7 --- /dev/null +++ b/libavcodec/xiph.h @@ -0,0 +1,38 @@ +/* + * 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 + */ + +#include "common.h" + +/** + * Splits 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]); -- cgit v1.2.3