[deb_ffmpeg.git] / ffmpeg / libavcodec / ac3_parser.h

/*
 * AC-3 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 AVCODEC_AC3_PARSER_H
#define AVCODEC_AC3_PARSER_H

#include "ac3.h"
#include "get_bits.h"

/**
 * Parse AC-3 frame header.
 * Parse the header up to the lfeon element, which is the first 52 or 54 bits
 * depending on the audio coding mode.
 * @param[in]  gbc BitContext containing the first 54 bits of the frame.
 * @param[out] hdr Pointer to Pointer to struct where header info is written.
 *                 will be allocated if NULL
 * @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 avpriv_ac3_parse_header2(GetBitContext *gbc, AC3HeaderInfo **hdr);

int avpriv_ac3_parse_header(GetBitContext *gbc, AC3HeaderInfo *hdr);

#endif /* AVCODEC_AC3_PARSER_H */
Commit	Line	Data
2ba45a60 DM	1	/*
	2	* AC-3 parser prototypes
	3	* Copyright (c) 2003 Fabrice Bellard
	4	* Copyright (c) 2003 Michael Niedermayer
	5	*
	6	* This file is part of FFmpeg.
	7	*
	8	* FFmpeg is free software; you can redistribute it and/or
	9	* modify it under the terms of the GNU Lesser General Public
	10	* License as published by the Free Software Foundation; either
	11	* version 2.1 of the License, or (at your option) any later version.
	12	*
	13	* FFmpeg is distributed in the hope that it will be useful,
	14	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	15	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	16	* Lesser General Public License for more details.
	17	*
	18	* You should have received a copy of the GNU Lesser General Public
	19	* License along with FFmpeg; if not, write to the Free Software
	20	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
	21	*/
	22
	23	#ifndef AVCODEC_AC3_PARSER_H
	24	#define AVCODEC_AC3_PARSER_H
	25
	26	#include "ac3.h"
	27	#include "get_bits.h"
	28
	29	/**
	30	* Parse AC-3 frame header.
	31	* Parse the header up to the lfeon element, which is the first 52 or 54 bits
	32	* depending on the audio coding mode.
	33	* @param[in] gbc BitContext containing the first 54 bits of the frame.
	34	* @param[out] hdr Pointer to Pointer to struct where header info is written.
	35	* will be allocated if NULL
	36	* @return Returns 0 on success, -1 if there is a sync word mismatch,
	37	* -2 if the bsid (version) element is invalid, -3 if the fscod (sample rate)
	38	* element is invalid, or -4 if the frmsizecod (bit rate) element is invalid.
	39	*/
	40	int avpriv_ac3_parse_header2(GetBitContext gbc, AC3HeaderInfo *hdr);
	41
	42	int avpriv_ac3_parse_header(GetBitContext gbc, AC3HeaderInfo hdr);
	43
	44	#endif /* AVCODEC_AC3_PARSER_H */