lib/bladeenc/l3side.h

   1 /*
   2                         (c) Copyright 1998-2000 - Tord Jansson
   3                         ======================================
   4
   5                 This file is part of the BladeEnc MP3 Encoder, based on
   6                 ISO's reference code for MPEG Layer 3 compression, and might
   7                 contain smaller or larger sections that are directly taken
   8                 from ISO's reference code.
   9
  10                 All changes to the ISO reference code herein are either
  11                 copyrighted by Tord Jansson (tord.jansson@swipnet.se)
  12                 or sublicensed to Tord Jansson by a third party.
  13
  14         BladeEnc is free software; you can redistribute this file
  15         and/or modify it under the terms of the GNU Lesser General Public
  16         License as published by the Free Software Foundation; either
  17         version 2.1 of the License, or (at your option) any later version.
  18
  19
  20
  21         ------------    Changes    ------------
  22
  23         2000-12-04  Andre Piotrowski
  24
  25         -       reformatted, slimmed
  26 */
  27
  28
  29
  30 /**********************************************************************
  31  * ISO MPEG Audio Subgroup Software Simulation Group (1996)
  32  * ISO 13818-3 MPEG-2 Audio Encoder - Lower Sampling Frequency Extension
  33  *
  34  * $Id: l3side.h,v 1.1 2004/05/08 12:14:42 kramm Exp $
  35  *
  36  * $Log: l3side.h,v $
  37  * Revision 1.1  2004/05/08 12:14:42  kramm
  38  * Version 0.94.1 of the bladeenc mp3 encoder
  39  *
  40  * Revision 1.1  2002/01/10 17:30:00  kramm
  41  * Version 0.94.1 of the bladeenc mp3 encoder
  42  *
  43  * Revision 1.1  1996/02/14 04:04:23  rowlands
  44  * Initial revision
  45  *
  46  * Received from Mike Coleman
  47  **********************************************************************/
  48 /**********************************************************************
  49  *   date   programmers                comment                        *
  50  * 25. 6.92  Toshiyuki Ishino          Ver 1.0                        *
  51  * 29.10.92  Masahiro Iwadare          Ver 2.0                        *
  52  * 17. 4.93  Masahiro Iwadare          Updated for IS Modification    *
  53  *                                                                    *
  54  *********************************************************************/
  55
  56 #ifndef         __L3SIDE__
  57 #define         __L3SIDE__
  58
  59
  60
  61
  62
  63 /* #define CBLIMIT_SHORT 12 */
  64
  65
  66
  67
  68
  69 /*      void                                    l3deco (void); */
  70
  71
  72
  73
  74
  75 /* Layer III side information. */
  76
  77 /*      typedef         double                                  D576[576]; */
  78 /*      typedef         int                                             I576[576]; */
  79 /*      typedef         double                                  D192_3[192][3]; */
  80 /*      typedef         int                                             I192_3[192][3]; */
  81 /*      typedef         char                                    C192_3[192][3]; */
  82
  83
  84
  85 /*      typedef         struct
  86                                 {
  87                                         unsigned                                cbl_max;
  88                                         unsigned                                cbs_start;
  89                                 }                                               III_cb_info; */
  90
  91 typedef         struct
  92                         {
  93                                 double                                  l[2][2][21];
  94                                 double                                  s[2][2][12][3];
  95                         }                                               III_psy_ratio;
  96
  97 /*      typedef         struct
  98                                 {
  99                                         double                                  l[2][2][21];
 100                                         double                                  s[2][2][12][3];
 101                                 }                                               III_psy_xmin;*/
 102
 103 /*      typedef         struct
 104                                 {
 105                                         double                                  xr[576];
 106                                         double                                  xr_s[3][192];
 107                                         double                                  xmin[21];
 108                                         double                                  xmin_s[3][192];
 109                                         int                                             ix[576];
 110                                         int                                             ix_s[3][192];
 111                                 }                                               III_input3;*/ /* ch */
 112
 113 typedef         struct
 114                         {
 115                                 unsigned                                part2_3_length;
 116                                 unsigned                                big_values;
 117                                 unsigned                                count1;
 118                                 unsigned                                global_gain;
 119                                 unsigned                                scalefac_compress;
 120                                 unsigned                                window_switching_flag;
 121                                 unsigned                                block_type;
 122                                 unsigned                                mixed_block_flag;
 123                                 unsigned                                table_select[3];
 124                                 int /*  unsigned */             subblock_gain[3];
 125                                 unsigned                                region0_count;
 126                                 unsigned                                region1_count;
 127                                 unsigned                                preflag;
 128                                 unsigned                                scalefac_scale;
 129                                 unsigned                                count1table_select;
 130                                 unsigned                                part2_length;
 131                                 unsigned                                sfb_lmax;
 132                                 unsigned                                sfb_smax;
 133                                 unsigned                                address1;
 134                                 unsigned                                address2;
 135                                 unsigned                                address3;
 136                                 double                                  quantizerStepSize;
 137                                 /* added for LSF */
 138                                 unsigned                                *sfb_partition_table;
 139                                 unsigned                                slen[4];
 140                         }                                               gr_info;
 141
 142 typedef         struct
 143                         {
 144                                 int                                             main_data_begin; /* unsigned -> int */
 145                                 unsigned                                private_bits;
 146                                 int                                             resvDrain;
 147                                 unsigned                                scfsi[2][4];
 148                                 struct
 149                                 {
 150                                         struct gr_info_s
 151                                         {
 152                                                 gr_info                                 tt;
 153                                         }                                               ch[2];
 154                                 }                                               gr[2];
 155                         } III_side_info_t;
 156
 157
 158
 159
 160
 161 /* Layer III scale factors. */
 162
 163 typedef         struct
 164                         {
 165                                 int                                             l[2][2][22];      /*         [cb] */
 166                                 int                                             s[2][2][13][3];   /* [window][cb] */
 167                         }                                               III_scalefac_t;   /* [gr][ch] */
 168
 169
 170
 171
 172
 173 #endif          /* __L3SIDE__ */