www.pudn.com > bladeenc-0.90.0-src.zip > l3side.h

/* 
			(c) Copyright 1998, 1999 - Tord Jansson 
			======================================= 
 
		This file is part of the BladeEnc MP3 Encoder, based on 
		ISO's reference code for MPEG Layer 3 compression, and might 
		contain smaller or larger sections that are directly taken 
		from ISO's reference code. 
 
		All changes to the ISO reference code herein are either 
		copyrighted by Tord Jansson (tord.jansson@swipnet.se) 
		or sublicensed to Tord Jansson by a third party. 
 
	BladeEnc is free software; you can redistribute this file 
	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. 
 
*/ 
 
 
 
/********************************************************************** 
 * ISO MPEG Audio Subgroup Software Simulation Group (1996) 
 * ISO 13818-3 MPEG-2 Audio Encoder - Lower Sampling Frequency Extension 
 * 
 * $Id: l3side.h,v 1.1 1996/02/14 04:04:23 rowlands Exp $ 
 * 
 * $Log: l3side.h,v $ 
 * Revision 1.1  1996/02/14 04:04:23  rowlands 
 * Initial revision 
 * 
 * Received from Mike Coleman 
 **********************************************************************/ 
/********************************************************************** 
 *   date   programmers                comment                        * 
 * 25. 6.92  Toshiyuki Ishino          Ver 1.0                        * 
 * 29.10.92  Masahiro Iwadare          Ver 2.0                        * 
 * 17. 4.93  Masahiro Iwadare          Updated for IS Modification    * 
 *                                                                    * 
 *********************************************************************/ 
 
#ifndef L3_SIDE_H 
#define L3_SIDE_H 
 
/* Layer III side information. */ 
 
/* #define CBLIMIT_SHORT 12 */ 
 
void l3deco(); 
 
typedef double	D576[576]; 
typedef int	I576[576]; 
typedef double	D192_3[192][3]; 
typedef int	I192_3[192][3]; 
typedef	char	C192_3[192][3]; 
 
typedef struct { 
	unsigned cbl_max; 
	unsigned cbs_start; 
} III_cb_info; 
 
 
typedef struct { 
	double	l[2][2][21]; 
	double	s[2][2][12][3]; 
} III_psy_ratio; 
 
typedef struct { 
	double	l[2][2][21]; 
	double	s[2][2][12][3]; 
} III_psy_xmin; 
 
typedef struct { 
	double	xr[576]; 
	double	xr_s[3][192]; 
	double	xmin[21]; 
	double	xmin_s[3][192]; 
	int	ix[576]; 
	int	ix_s[3][192]; 
	} III_input3; /* ch */ 
 
typedef struct { 
	unsigned part2_3_length; 
	unsigned big_values; 
	unsigned count1; 
 	unsigned global_gain; 
	unsigned scalefac_compress; 
	unsigned window_switching_flag; 
	unsigned block_type; 
	unsigned mixed_block_flag; 
	unsigned table_select[3]; 
int /*	unsigned */ subblock_gain[3]; 
	unsigned region0_count; 
	unsigned region1_count; 
	unsigned preflag; 
	unsigned scalefac_scale; 
	unsigned count1table_select; 
 
	unsigned part2_length; 
	unsigned sfb_lmax; 
	unsigned sfb_smax; 
	unsigned address1; 
	unsigned address2; 
	unsigned address3; 
	double quantizerStepSize; 
	/* added for LSF */ 
	unsigned *sfb_partition_table; 
	unsigned slen[4]; 
} gr_info; 
 
typedef struct { 
	int main_data_begin; /* unsigned -> int */ 
	unsigned private_bits; 
	int resvDrain; 
	unsigned scfsi[2][4]; 
	struct { 
		struct gr_info_s { 
			gr_info tt; 
			} ch[2]; 
		} gr[2]; 
	} III_side_info_t; 
 
/* Layer III scale factors. */ 
 
typedef struct { 
	int l[2][2][22];            /* [cb] */ 
	int s[2][2][13][3];         /* [window][cb] */ 
	} III_scalefac_t;  /* [gr][ch] */ 
 
#endif