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 2002/01/10 17:30:00 kramm Exp $
  35  *
  36  * $Log: l3side.h,v $
  37  * Revision 1.1  2002/01/10 17:30:00  kramm
  38  * Version 0.94.1 of the bladeenc mp3 encoder
  39  *
  40  * Revision 1.1  1996/02/14 04:04:23  rowlands
  41  * Initial revision
  42  *
  43  * Received from Mike Coleman
  44  **********************************************************************/
  45 /**********************************************************************
  46  *   date   programmers                comment                        *
  47  * 25. 6.92  Toshiyuki Ishino          Ver 1.0                        *
  48  * 29.10.92  Masahiro Iwadare          Ver 2.0                        *
  49  * 17. 4.93  Masahiro Iwadare          Updated for IS Modification    *
  50  *                                                                    *
  51  *********************************************************************/
  52
  53 #ifndef         __L3SIDE__
  54 #define         __L3SIDE__
  55
  56
  57
  58
  59
  60 /* #define CBLIMIT_SHORT 12 */
  61
  62
  63
  64
  65
  66 /*      void                                    l3deco (void); */
  67
  68
  69
  70
  71
  72 /* Layer III side information. */
  73
  74 /*      typedef         double                                  D576[576]; */
  75 /*      typedef         int                                             I576[576]; */
  76 /*      typedef         double                                  D192_3[192][3]; */
  77 /*      typedef         int                                             I192_3[192][3]; */
  78 /*      typedef         char                                    C192_3[192][3]; */
  79
  80
  81
  82 /*      typedef         struct
  83                                 {
  84                                         unsigned                                cbl_max;
  85                                         unsigned                                cbs_start;
  86                                 }                                               III_cb_info; */
  87
  88 typedef         struct
  89                         {
  90                                 double                                  l[2][2][21];
  91                                 double                                  s[2][2][12][3];
  92                         }                                               III_psy_ratio;
  93
  94 /*      typedef         struct
  95                                 {
  96                                         double                                  l[2][2][21];
  97                                         double                                  s[2][2][12][3];
  98                                 }                                               III_psy_xmin;*/
  99
 100 /*      typedef         struct
 101                                 {
 102                                         double                                  xr[576];
 103                                         double                                  xr_s[3][192];
 104                                         double                                  xmin[21];
 105                                         double                                  xmin_s[3][192];
 106                                         int                                             ix[576];
 107                                         int                                             ix_s[3][192];
 108                                 }                                               III_input3;*/ /* ch */
 109
 110 typedef         struct
 111                         {
 112                                 unsigned                                part2_3_length;
 113                                 unsigned                                big_values;
 114                                 unsigned                                count1;
 115                                 unsigned                                global_gain;
 116                                 unsigned                                scalefac_compress;
 117                                 unsigned                                window_switching_flag;
 118                                 unsigned                                block_type;
 119                                 unsigned                                mixed_block_flag;
 120                                 unsigned                                table_select[3];
 121                                 int /*  unsigned */             subblock_gain[3];
 122                                 unsigned                                region0_count;
 123                                 unsigned                                region1_count;
 124                                 unsigned                                preflag;
 125                                 unsigned                                scalefac_scale;
 126                                 unsigned                                count1table_select;
 127                                 unsigned                                part2_length;
 128                                 unsigned                                sfb_lmax;
 129                                 unsigned                                sfb_smax;
 130                                 unsigned                                address1;
 131                                 unsigned                                address2;
 132                                 unsigned                                address3;
 133                                 double                                  quantizerStepSize;
 134                                 /* added for LSF */
 135                                 unsigned                                *sfb_partition_table;
 136                                 unsigned                                slen[4];
 137                         }                                               gr_info;
 138
 139 typedef         struct
 140                         {
 141                                 int                                             main_data_begin; /* unsigned -> int */
 142                                 unsigned                                private_bits;
 143                                 int                                             resvDrain;
 144                                 unsigned                                scfsi[2][4];
 145                                 struct
 146                                 {
 147                                         struct gr_info_s
 148                                         {
 149                                                 gr_info                                 tt;
 150                                         }                                               ch[2];
 151                                 }                                               gr[2];
 152                         } III_side_info_t;
 153
 154
 155
 156
 157
 158 /* Layer III scale factors. */
 159
 160 typedef         struct
 161                         {
 162                                 int                                             l[2][2][22];      /*         [cb] */
 163                                 int                                             s[2][2][13][3];   /* [window][cb] */
 164                         }                                               III_scalefac_t;   /* [gr][ch] */
 165
 166
 167
 168
 169
 170 #endif          /* __L3SIDE__ */