lib/bladeenc/loop.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         2000-12-11  Andre Piotrowski
  24
  25         -       reformatted, redesigned
  26 */
  27
  28 /**********************************************************************
  29  * ISO MPEG Audio Subgroup Software Simulation Group (1996)
  30  * ISO 13818-3 MPEG-2 Audio Encoder - Lower Sampling Frequency Extension
  31  *
  32  * $Id: loop.h,v 1.1 2004/05/08 12:18:53 kramm Exp $
  33  *
  34  * $Log: loop.h,v $
  35  * Revision 1.1  2004/05/08 12:18:53  kramm
  36  * Version 0.94.1 of the bladeenc mp3 encoder
  37  *
  38  * Revision 1.1  2002/01/10 17:30:00  kramm
  39  * Version 0.94.1 of the bladeenc mp3 encoder
  40  *
  41  * Revision 1.1  1996/02/14 04:04:23  rowlands
  42  * Initial revision
  43  *
  44  * Received from Mike Coleman
  45  **********************************************************************/
  46
  47 /**********************************************************************
  48  *   date   programmers                comment                        *
  49  * 25. 6.92  Toshiyuki Ishino          Ver 1.0                        *
  50  * 29.10.92  Masahiro Iwadare          Ver 2.0                        *
  51  * 17. 4.93  Masahiro Iwadare          Updated for IS Modification    *
  52  *                                                                    *
  53  *********************************************************************/
  54
  55 #ifndef         __LOOP__
  56 #define         __LOOP__
  57
  58
  59
  60
  61 #include "common.h"
  62 #include "l3side.h"
  63
  64
  65
  66
  67
  68 /*      #define SBLIMIT                 32 */
  69 #define CBLIMIT                 21
  70
  71 #define SFB_LMAX                22
  72 #define SFB_SMAX                13
  73
  74
  75
  76
  77 extern  int                             fInit_iteration_loop;
  78 /* NOT NEEDED
  79 extern  int                             fInit_huffman_read_flag;
  80 */
  81
  82
  83 extern  int                             pretab[];
  84
  85
  86 struct  scalefac_struct
  87 {
  88         int l[23];
  89         int s[14];
  90 };
  91
  92 extern  struct scalefac_struct          sfBandIndex[];  /* Table B.8 -- in loop.c */
  93
  94
  95
  96
  97
  98 void                                    iteration_loop
  99 (
 100         double                                  pe[][2],
 101         double                                  xr_org[2][2][576],
 102         III_psy_ratio                   *ratio,
 103         III_side_info_t                 *l3_side,
 104         int                                             l3_enc[2][2][576],
 105         int                                             mean_bits,
 106         int                                             stereo,
 107         double                                  xr_dec[2][2][576],
 108         III_scalefac_t                  *scalefac,
 109         frame_params                    *fr_ps,
 110         int                                             ancillary_pad,
 111         int                                             bitsPerFrame
 112 );
 113
 114 int                                             my_nint (double in);
 115
 116 void                                    fixStatic_loop (void);
 117
 118 void                                    genNoisePowTab (void);
 119
 120
 121
 122
 123
 124 #endif          /* __LOOP__ */