From 99ff31dc750e8ac562b529c3ec374cfbb3e66157 Mon Sep 17 00:00:00 2001 From: Aurelien Jacobs Date: Tue, 8 May 2007 23:25:31 +0000 Subject: move aac and ac3 parsers in their own files Originally committed as revision 8941 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/ac3_parser.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 libavcodec/ac3_parser.h (limited to 'libavcodec/ac3_parser.h') diff --git a/libavcodec/ac3_parser.h b/libavcodec/ac3_parser.h new file mode 100644 index 0000000000..fb35b975be --- /dev/null +++ b/libavcodec/ac3_parser.h @@ -0,0 +1,40 @@ +/* + * AC3 parser prototypes + * Copyright (c) 2003 Fabrice Bellard. + * Copyright (c) 2003 Michael Niedermayer. + * + * 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 AC3_PARSER_H +#define AC3_PARSER_H + +#include "ac3.h" + +/** + * Parses AC-3 frame header. + * Parses the header up to the lfeon element, which is the first 52 or 54 bits + * depending on the audio coding mode. + * @param buf[in] Array containing the first 7 bytes of the frame. + * @param hdr[out] Pointer to struct where header info is written. + * @return Returns 0 on success, -1 if there is a sync word mismatch, + * -2 if the bsid (version) element is invalid, -3 if the fscod (sample rate) + * element is invalid, or -4 if the frmsizecod (bit rate) element is invalid. + */ +int ff_ac3_parse_header(const uint8_t buf[7], AC3HeaderInfo *hdr); + +#endif /* AC3_PARSER_H */ -- cgit v1.2.3