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