annotate decoders/mpglib/layer3.c @ 420:5b8a07b5162e

Latest altcvt from Frank.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 26 Sep 2002 04:34:35 +0000
parents 9d0b5ec9cc26
children 5b00e43ec23c
rev   line source
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1 /*
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2 * Mpeg Layer-3 audio decoder
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3 * --------------------------
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4 * copyright (c) 1995,1996,1997 by Michael Hipp.
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5 * All rights reserved. See also 'README'
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6 */
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7
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8 #include <stdlib.h>
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9
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10 #include "SDL_sound.h"
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11
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12 #define __SDL_SOUND_INTERNAL__
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13 #include "SDL_sound_internal.h"
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14
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15 #include "mpg123_sdlsound.h"
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16 #include "mpglib_sdlsound.h"
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17 #include "huffman.h"
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18
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19 #define MPEG1
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20
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21 static real ispow[8207];
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22 static real aa_ca[8],aa_cs[8];
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23 static real COS1[12][6];
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24 static real win[4][36];
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25 static real win1[4][36];
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26 static real gainpow2[256+118+4];
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27 static real COS9[9];
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28 static real COS6_1,COS6_2;
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29 static real tfcos36[9];
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30 static real tfcos12[3];
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31
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32 struct bandInfoStruct {
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33 short longIdx[23];
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34 short longDiff[22];
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35 short shortIdx[14];
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36 short shortDiff[13];
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37 };
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38
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39 int longLimit[9][23];
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40 int shortLimit[9][14];
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41
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42 struct bandInfoStruct bandInfo[9] = {
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43
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44 /* MPEG 1.0 */
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45 { {0,4,8,12,16,20,24,30,36,44,52,62,74, 90,110,134,162,196,238,288,342,418,576},
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46 {4,4,4,4,4,4,6,6,8, 8,10,12,16,20,24,28,34,42,50,54, 76,158},
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47 {0,4*3,8*3,12*3,16*3,22*3,30*3,40*3,52*3,66*3, 84*3,106*3,136*3,192*3},
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48 {4,4,4,4,6,8,10,12,14,18,22,30,56} } ,
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49
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50 { {0,4,8,12,16,20,24,30,36,42,50,60,72, 88,106,128,156,190,230,276,330,384,576},
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51 {4,4,4,4,4,4,6,6,6, 8,10,12,16,18,22,28,34,40,46,54, 54,192},
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52 {0,4*3,8*3,12*3,16*3,22*3,28*3,38*3,50*3,64*3, 80*3,100*3,126*3,192*3},
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53 {4,4,4,4,6,6,10,12,14,16,20,26,66} } ,
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54
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55 { {0,4,8,12,16,20,24,30,36,44,54,66,82,102,126,156,194,240,296,364,448,550,576} ,
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56 {4,4,4,4,4,4,6,6,8,10,12,16,20,24,30,38,46,56,68,84,102, 26} ,
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57 {0,4*3,8*3,12*3,16*3,22*3,30*3,42*3,58*3,78*3,104*3,138*3,180*3,192*3} ,
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58 {4,4,4,4,6,8,12,16,20,26,34,42,12} } ,
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59
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60 /* MPEG 2.0 */
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61 { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576},
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62 {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54 } ,
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63 {0,4*3,8*3,12*3,18*3,24*3,32*3,42*3,56*3,74*3,100*3,132*3,174*3,192*3} ,
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64 {4,4,4,6,6,8,10,14,18,26,32,42,18 } } ,
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65
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66 { {0,6,12,18,24,30,36,44,54,66,80,96,114,136,162,194,232,278,330,394,464,540,576},
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67 {6,6,6,6,6,6,8,10,12,14,16,18,22,26,32,38,46,52,64,70,76,36 } ,
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68 {0,4*3,8*3,12*3,18*3,26*3,36*3,48*3,62*3,80*3,104*3,136*3,180*3,192*3} ,
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69 {4,4,4,6,8,10,12,14,18,24,32,44,12 } } ,
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70
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71 { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576},
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72 {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54 },
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73 {0,4*3,8*3,12*3,18*3,26*3,36*3,48*3,62*3,80*3,104*3,134*3,174*3,192*3},
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74 {4,4,4,6,8,10,12,14,18,24,30,40,18 } } ,
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75 /* MPEG 2.5 */
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76 { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576} ,
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77 {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54},
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78 {0,12,24,36,54,78,108,144,186,240,312,402,522,576},
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79 {4,4,4,6,8,10,12,14,18,24,30,40,18} },
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80 { {0,6,12,18,24,30,36,44,54,66,80,96,116,140,168,200,238,284,336,396,464,522,576} ,
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81 {6,6,6,6,6,6,8,10,12,14,16,20,24,28,32,38,46,52,60,68,58,54},
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82 {0,12,24,36,54,78,108,144,186,240,312,402,522,576},
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83 {4,4,4,6,8,10,12,14,18,24,30,40,18} },
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84 { {0,12,24,36,48,60,72,88,108,132,160,192,232,280,336,400,476,566,568,570,572,574,576},
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85 {12,12,12,12,12,12,16,20,24,28,32,40,48,56,64,76,90,2,2,2,2,2},
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86 {0, 24, 48, 72,108,156,216,288,372,480,486,492,498,576},
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87 {8,8,8,12,16,20,24,28,36,2,2,2,26} } ,
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88 };
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89
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90 static int mapbuf0[9][152];
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91 static int mapbuf1[9][156];
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92 static int mapbuf2[9][44];
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93 static int *map[9][3];
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94 static int *mapend[9][3];
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95
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96 static unsigned int n_slen2[512]; /* MPEG 2.0 slen for 'normal' mode */
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97 static unsigned int i_slen2[256]; /* MPEG 2.0 slen for intensity stereo */
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98
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99 static real tan1_1[16],tan2_1[16],tan1_2[16],tan2_2[16];
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100 static real pow1_1[2][16],pow2_1[2][16],pow1_2[2][16],pow2_2[2][16];
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101
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102 /*
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103 * init tables for layer-3
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104 */
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105 void init_layer3(int down_sample_sblimit)
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106 {
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107 int i,j,k,l;
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108
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109 for(i=-256;i<118+4;i++)
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110 gainpow2[i+256] = pow((double)2.0,-0.25 * (double) (i+210) );
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111
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112 for(i=0;i<8207;i++)
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113 ispow[i] = pow((double)i,(double)4.0/3.0);
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114
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115 for (i=0;i<8;i++)
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116 {
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117 static double Ci[8]={-0.6,-0.535,-0.33,-0.185,-0.095,-0.041,-0.0142,-0.0037};
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118 double sq=sqrt(1.0+Ci[i]*Ci[i]);
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119 aa_cs[i] = 1.0/sq;
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120 aa_ca[i] = Ci[i]/sq;
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121 }
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122
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123 for(i=0;i<18;i++)
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124 {
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125 win[0][i] = win[1][i] = 0.5 * sin( M_PI / 72.0 * (double) (2*(i+0) +1) ) / cos ( M_PI * (double) (2*(i+0) +19) / 72.0 );
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126 win[0][i+18] = win[3][i+18] = 0.5 * sin( M_PI / 72.0 * (double) (2*(i+18)+1) ) / cos ( M_PI * (double) (2*(i+18)+19) / 72.0 );
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127 }
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128 for(i=0;i<6;i++)
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129 {
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130 win[1][i+18] = 0.5 / cos ( M_PI * (double) (2*(i+18)+19) / 72.0 );
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131 win[3][i+12] = 0.5 / cos ( M_PI * (double) (2*(i+12)+19) / 72.0 );
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132 win[1][i+24] = 0.5 * sin( M_PI / 24.0 * (double) (2*i+13) ) / cos ( M_PI * (double) (2*(i+24)+19) / 72.0 );
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133 win[1][i+30] = win[3][i] = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
134 win[3][i+6 ] = 0.5 * sin( M_PI / 24.0 * (double) (2*i+1) ) / cos ( M_PI * (double) (2*(i+6 )+19) / 72.0 );
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
135 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
136
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
137 for(i=0;i<9;i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
138 COS9[i] = cos( M_PI / 18.0 * (double) i);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
139
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
140 for(i=0;i<9;i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
141 tfcos36[i] = 0.5 / cos ( M_PI * (double) (i*2+1) / 36.0 );
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
142 for(i=0;i<3;i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
143 tfcos12[i] = 0.5 / cos ( M_PI * (double) (i*2+1) / 12.0 );
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
144
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
145 COS6_1 = cos( M_PI / 6.0 * (double) 1);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
146 COS6_2 = cos( M_PI / 6.0 * (double) 2);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
147
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
148 for(i=0;i<12;i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
149 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
150 win[2][i] = 0.5 * sin( M_PI / 24.0 * (double) (2*i+1) ) / cos ( M_PI * (double) (2*i+7) / 24.0 );
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
151 for(j=0;j<6;j++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
152 COS1[i][j] = cos( M_PI / 24.0 * (double) ((2*i+7)*(2*j+1)) );
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
153 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
154
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
155 for(j=0;j<4;j++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
156 static int len[4] = { 36,36,12,36 };
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
157 for(i=0;i<len[j];i+=2)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
158 win1[j][i] = + win[j][i];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
159 for(i=1;i<len[j];i+=2)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
160 win1[j][i] = - win[j][i];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
161 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
162
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
163 for(i=0;i<16;i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
164 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
165 double t = tan( (double) i * M_PI / 12.0 );
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
166 tan1_1[i] = t / (1.0+t);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
167 tan2_1[i] = 1.0 / (1.0 + t);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
168 tan1_2[i] = M_SQRT2 * t / (1.0+t);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
169 tan2_2[i] = M_SQRT2 / (1.0 + t);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
170
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
171 for(j=0;j<2;j++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
172 double base = pow(2.0,-0.25*(j+1.0));
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
173 double p1=1.0,p2=1.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
174 if(i > 0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
175 if( i & 1 )
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
176 p1 = pow(base,(i+1.0)*0.5);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
177 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
178 p2 = pow(base,i*0.5);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
179 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
180 pow1_1[j][i] = p1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
181 pow2_1[j][i] = p2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
182 pow1_2[j][i] = M_SQRT2 * p1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
183 pow2_2[j][i] = M_SQRT2 * p2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
184 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
185 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
186
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
187 for(j=0;j<9;j++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
188 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
189 struct bandInfoStruct *bi = &bandInfo[j];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
190 int *mp;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
191 int cb,lwin;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
192 short *bdf;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
193
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
194 mp = map[j][0] = mapbuf0[j];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
195 bdf = bi->longDiff;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
196 for(i=0,cb = 0; cb < 8 ; cb++,i+=*bdf++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
197 *mp++ = (*bdf) >> 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
198 *mp++ = i;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
199 *mp++ = 3;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
200 *mp++ = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
201 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
202 bdf = bi->shortDiff+3;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
203 for(cb=3;cb<13;cb++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
204 int l = (*bdf++) >> 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
205 for(lwin=0;lwin<3;lwin++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
206 *mp++ = l;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
207 *mp++ = i + lwin;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
208 *mp++ = lwin;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
209 *mp++ = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
210 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
211 i += 6*l;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
212 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
213 mapend[j][0] = mp;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
214
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
215 mp = map[j][1] = mapbuf1[j];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
216 bdf = bi->shortDiff+0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
217 for(i=0,cb=0;cb<13;cb++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
218 int l = (*bdf++) >> 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
219 for(lwin=0;lwin<3;lwin++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
220 *mp++ = l;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
221 *mp++ = i + lwin;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
222 *mp++ = lwin;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
223 *mp++ = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
224 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
225 i += 6*l;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
226 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
227 mapend[j][1] = mp;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
228
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
229 mp = map[j][2] = mapbuf2[j];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
230 bdf = bi->longDiff;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
231 for(cb = 0; cb < 22 ; cb++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
232 *mp++ = (*bdf++) >> 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
233 *mp++ = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
234 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
235 mapend[j][2] = mp;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
236
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
237 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
238
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
239 for(j=0;j<9;j++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
240 for(i=0;i<23;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
241 longLimit[j][i] = (bandInfo[j].longIdx[i] - 1 + 8) / 18 + 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
242 if(longLimit[j][i] > (down_sample_sblimit) )
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
243 longLimit[j][i] = down_sample_sblimit;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
244 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
245 for(i=0;i<14;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
246 shortLimit[j][i] = (bandInfo[j].shortIdx[i] - 1) / 18 + 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
247 if(shortLimit[j][i] > (down_sample_sblimit) )
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
248 shortLimit[j][i] = down_sample_sblimit;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
249 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
250 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
251
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
252 for(i=0;i<5;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
253 for(j=0;j<6;j++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
254 for(k=0;k<6;k++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
255 int n = k + j * 6 + i * 36;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
256 i_slen2[n] = i|(j<<3)|(k<<6)|(3<<12);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
257 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
258 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
259 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
260 for(i=0;i<4;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
261 for(j=0;j<4;j++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
262 for(k=0;k<4;k++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
263 int n = k + j * 4 + i * 16;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
264 i_slen2[n+180] = i|(j<<3)|(k<<6)|(4<<12);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
265 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
266 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
267 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
268 for(i=0;i<4;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
269 for(j=0;j<3;j++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
270 int n = j + i * 3;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
271 i_slen2[n+244] = i|(j<<3) | (5<<12);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
272 n_slen2[n+500] = i|(j<<3) | (2<<12) | (1<<15);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
273 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
274 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
275
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
276 for(i=0;i<5;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
277 for(j=0;j<5;j++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
278 for(k=0;k<4;k++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
279 for(l=0;l<4;l++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
280 int n = l + k * 4 + j * 16 + i * 80;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
281 n_slen2[n] = i|(j<<3)|(k<<6)|(l<<9)|(0<<12);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
282 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
283 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
284 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
285 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
286 for(i=0;i<5;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
287 for(j=0;j<5;j++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
288 for(k=0;k<4;k++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
289 int n = k + j * 4 + i * 20;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
290 n_slen2[n+400] = i|(j<<3)|(k<<6)|(1<<12);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
291 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
292 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
293 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
294 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
295
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
296 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
297 * read additional side information
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
298 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
299 #ifdef MPEG1
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
300 static int III_get_side_info_1(struct III_sideinfo *si,int stereo,
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
301 int ms_stereo,long sfreq,int single)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
302 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
303 int ch, gr;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
304 int powdiff = (single == 3) ? 4 : 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
305
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
306 si->main_data_begin = getbits(9);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
307 if (stereo == 1)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
308 si->private_bits = getbits_fast(5);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
309 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
310 si->private_bits = getbits_fast(3);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
311
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
312 for (ch=0; ch<stereo; ch++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
313 si->ch[ch].gr[0].scfsi = -1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
314 si->ch[ch].gr[1].scfsi = getbits_fast(4);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
315 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
316
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
317 for (gr=0; gr<2; gr++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
318 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
319 for (ch=0; ch<stereo; ch++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
320 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
321 register struct gr_info_s *gr_info = &(si->ch[ch].gr[gr]);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
322
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
323 gr_info->part2_3_length = getbits(12);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
324 gr_info->big_values = getbits_fast(9);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
325 if(gr_info->big_values > 288) {
299
7b1df7526915 Patches for Visual C compatibility.
Ryan C. Gordon <icculus@icculus.org>
parents: 281
diff changeset
326 SNDDBG(("MPGLIB: big_values too large!\n"));
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
327 gr_info->big_values = 288;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
328 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
329 gr_info->pow2gain = gainpow2+256 - getbits_fast(8) + powdiff;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
330 if(ms_stereo)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
331 gr_info->pow2gain += 2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
332 gr_info->scalefac_compress = getbits_fast(4);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
333 /* window-switching flag == 1 for block_Type != 0 .. and block-type == 0 -> win-sw-flag = 0 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
334 if(get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
335 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
336 int i;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
337 gr_info->block_type = getbits_fast(2);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
338 gr_info->mixed_block_flag = get1bit();
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
339 gr_info->table_select[0] = getbits_fast(5);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
340 gr_info->table_select[1] = getbits_fast(5);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
341 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
342 * table_select[2] not needed, because there is no region2,
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
343 * but to satisfy some verifications tools we set it either.
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
344 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
345 gr_info->table_select[2] = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
346 for(i=0;i<3;i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
347 gr_info->full_gain[i] = gr_info->pow2gain + (getbits_fast(3)<<3);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
348
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
349 if(gr_info->block_type == 0) {
387
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL*_MACRO)
Ryan C. Gordon <icculus@icculus.org>
parents: 299
diff changeset
350 BAIL_MACRO("MPGLIB: Blocktype == 0 and window-switching == 1 not allowed.", 0);
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
351 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
352 /* region_count/start parameters are implicit in this case. */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
353 gr_info->region1start = 36>>1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
354 gr_info->region2start = 576>>1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
355 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
356 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
357 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
358 int i,r0c,r1c;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
359 for (i=0; i<3; i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
360 gr_info->table_select[i] = getbits_fast(5);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
361 r0c = getbits_fast(4);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
362 r1c = getbits_fast(3);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
363 gr_info->region1start = bandInfo[sfreq].longIdx[r0c+1] >> 1 ;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
364 gr_info->region2start = bandInfo[sfreq].longIdx[r0c+1+r1c+1] >> 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
365 gr_info->block_type = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
366 gr_info->mixed_block_flag = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
367 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
368 gr_info->preflag = get1bit();
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
369 gr_info->scalefac_scale = get1bit();
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
370 gr_info->count1table_select = get1bit();
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
371 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
372 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
373 return !0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
374 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
375 #endif
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
376
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
377 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
378 * Side Info for MPEG 2.0 / LSF
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
379 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
380 static int III_get_side_info_2(struct III_sideinfo *si,int stereo,
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
381 int ms_stereo,long sfreq,int single)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
382 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
383 int ch;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
384 int powdiff = (single == 3) ? 4 : 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
385
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
386 si->main_data_begin = getbits(8);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
387 if (stereo == 1)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
388 si->private_bits = get1bit();
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
389 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
390 si->private_bits = getbits_fast(2);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
391
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
392 for (ch=0; ch<stereo; ch++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
393 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
394 register struct gr_info_s *gr_info = &(si->ch[ch].gr[0]);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
395
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
396 gr_info->part2_3_length = getbits(12);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
397 gr_info->big_values = getbits_fast(9);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
398 if(gr_info->big_values > 288) {
299
7b1df7526915 Patches for Visual C compatibility.
Ryan C. Gordon <icculus@icculus.org>
parents: 281
diff changeset
399 SNDDBG(("MPGLIB: big_values too large!\n"));
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
400 gr_info->big_values = 288;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
401 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
402 gr_info->pow2gain = gainpow2+256 - getbits_fast(8) + powdiff;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
403 if(ms_stereo)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
404 gr_info->pow2gain += 2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
405 gr_info->scalefac_compress = getbits(9);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
406 /* window-switching flag == 1 for block_Type != 0 .. and block-type == 0 -> win-sw-flag = 0 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
407 if(get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
408 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
409 int i;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
410 gr_info->block_type = getbits_fast(2);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
411 gr_info->mixed_block_flag = get1bit();
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
412 gr_info->table_select[0] = getbits_fast(5);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
413 gr_info->table_select[1] = getbits_fast(5);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
414 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
415 * table_select[2] not needed, because there is no region2,
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
416 * but to satisfy some verifications tools we set it either.
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
417 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
418 gr_info->table_select[2] = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
419 for(i=0;i<3;i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
420 gr_info->full_gain[i] = gr_info->pow2gain + (getbits_fast(3)<<3);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
421
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
422 if(gr_info->block_type == 0) {
387
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL*_MACRO)
Ryan C. Gordon <icculus@icculus.org>
parents: 299
diff changeset
423 BAIL_MACRO("MPGLIB: Blocktype == 0 and window-switching == 1 not allowed.", 0);
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
424 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
425 /* region_count/start parameters are implicit in this case. */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
426 /* check this again! */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
427 if(gr_info->block_type == 2)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
428 gr_info->region1start = 36>>1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
429 else if(sfreq == 8)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
430 /* check this for 2.5 and sfreq=8 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
431 gr_info->region1start = 108>>1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
432 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
433 gr_info->region1start = 54>>1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
434 gr_info->region2start = 576>>1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
435 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
436 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
437 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
438 int i,r0c,r1c;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
439 for (i=0; i<3; i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
440 gr_info->table_select[i] = getbits_fast(5);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
441 r0c = getbits_fast(4);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
442 r1c = getbits_fast(3);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
443 gr_info->region1start = bandInfo[sfreq].longIdx[r0c+1] >> 1 ;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
444 gr_info->region2start = bandInfo[sfreq].longIdx[r0c+1+r1c+1] >> 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
445 gr_info->block_type = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
446 gr_info->mixed_block_flag = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
447 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
448 gr_info->scalefac_scale = get1bit();
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
449 gr_info->count1table_select = get1bit();
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
450 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
451 return !0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
452 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
453
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
454 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
455 * read scalefactors
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
456 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
457 #ifdef MPEG1
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
458 static int III_get_scale_factors_1(int *scf,struct gr_info_s *gr_info)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
459 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
460 static const unsigned char slen[2][16] = {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
461 {0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4},
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
462 {0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3}
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
463 };
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
464 int numbits;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
465 int num0 = slen[0][gr_info->scalefac_compress];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
466 int num1 = slen[1][gr_info->scalefac_compress];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
467
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
468 if (gr_info->block_type == 2) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
469 int i=18;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
470 numbits = (num0 + num1) * 18;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
471
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
472 if (gr_info->mixed_block_flag) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
473 for (i=8;i;i--)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
474 *scf++ = getbits_fast(num0);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
475 i = 9;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
476 numbits -= num0; /* num0 * 17 + num1 * 18 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
477 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
478
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
479 for (;i;i--)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
480 *scf++ = getbits_fast(num0);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
481 for (i = 18; i; i--)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
482 *scf++ = getbits_fast(num1);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
483 *scf++ = 0; *scf++ = 0; *scf++ = 0; /* short[13][0..2] = 0 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
484 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
485 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
486 int i;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
487 int scfsi = gr_info->scfsi;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
488
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
489 if(scfsi < 0) { /* scfsi < 0 => granule == 0 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
490 for(i=11;i;i--)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
491 *scf++ = getbits_fast(num0);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
492 for(i=10;i;i--)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
493 *scf++ = getbits_fast(num1);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
494 numbits = (num0 + num1) * 10 + num0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
495 *scf++ = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
496 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
497 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
498 numbits = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
499 if(!(scfsi & 0x8)) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
500 for (i=0;i<6;i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
501 *scf++ = getbits_fast(num0);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
502 numbits += num0 * 6;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
503 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
504 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
505 scf += 6;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
506 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
507
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
508 if(!(scfsi & 0x4)) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
509 for (i=0;i<5;i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
510 *scf++ = getbits_fast(num0);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
511 numbits += num0 * 5;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
512 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
513 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
514 scf += 5;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
515 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
516
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
517 if(!(scfsi & 0x2)) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
518 for(i=0;i<5;i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
519 *scf++ = getbits_fast(num1);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
520 numbits += num1 * 5;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
521 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
522 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
523 scf += 5;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
524 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
525
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
526 if(!(scfsi & 0x1)) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
527 for (i=0;i<5;i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
528 *scf++ = getbits_fast(num1);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
529 numbits += num1 * 5;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
530 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
531 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
532 scf += 5;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
533 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
534 *scf++ = 0; /* no l[21] in original sources */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
535 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
536 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
537 return numbits;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
538 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
539 #endif
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
540
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
541
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
542 static int III_get_scale_factors_2(int *scf,struct gr_info_s *gr_info,int i_stereo)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
543 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
544 unsigned char *pnt;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
545 int i,j;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
546 unsigned int slen;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
547 int n = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
548 int numbits = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
549
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
550 static unsigned char stab[3][6][4] = {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
551 { { 6, 5, 5,5 } , { 6, 5, 7,3 } , { 11,10,0,0} ,
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
552 { 7, 7, 7,0 } , { 6, 6, 6,3 } , { 8, 8,5,0} } ,
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
553 { { 9, 9, 9,9 } , { 9, 9,12,6 } , { 18,18,0,0} ,
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
554 {12,12,12,0 } , {12, 9, 9,6 } , { 15,12,9,0} } ,
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
555 { { 6, 9, 9,9 } , { 6, 9,12,6 } , { 15,18,0,0} ,
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
556 { 6,15,12,0 } , { 6,12, 9,6 } , { 6,18,9,0} } };
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
557
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
558 if(i_stereo) /* i_stereo AND second channel -> do_layer3() checks this */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
559 slen = i_slen2[gr_info->scalefac_compress>>1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
560 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
561 slen = n_slen2[gr_info->scalefac_compress];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
562
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
563 gr_info->preflag = (slen>>15) & 0x1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
564
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
565 n = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
566 if( gr_info->block_type == 2 ) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
567 n++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
568 if(gr_info->mixed_block_flag)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
569 n++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
570 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
571
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
572 pnt = stab[n][(slen>>12)&0x7];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
573
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
574 for(i=0;i<4;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
575 int num = slen & 0x7;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
576 slen >>= 3;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
577 if(num) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
578 for(j=0;j<(int)(pnt[i]);j++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
579 *scf++ = getbits_fast(num);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
580 numbits += pnt[i] * num;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
581 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
582 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
583 for(j=0;j<(int)(pnt[i]);j++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
584 *scf++ = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
585 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
586 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
587
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
588 n = (n << 1) + 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
589 for(i=0;i<n;i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
590 *scf++ = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
591
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
592 return numbits;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
593 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
594
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
595 static int pretab1[22] = {0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,2,2,3,3,3,2,0};
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
596 static int pretab2[22] = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
597
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
598 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
599 * don't forget to apply the same changes to III_dequantize_sample_ms() !!!
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
600 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
601 static int III_dequantize_sample(real xr[SBLIMIT][SSLIMIT],int *scf,
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
602 struct gr_info_s *gr_info,int sfreq,int part2bits)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
603 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
604 int shift = 1 + gr_info->scalefac_scale;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
605 real *xrpnt = (real *) xr;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
606 int l[3],l3;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
607 int part2remain = gr_info->part2_3_length - part2bits;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
608 int *me;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
609
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
610 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
611 int bv = gr_info->big_values;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
612 int region1 = gr_info->region1start;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
613 int region2 = gr_info->region2start;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
614
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
615 l3 = ((576>>1)-bv)>>1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
616 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
617 * we may lose the 'odd' bit here !!
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
618 * check this later again
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
619 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
620 if(bv <= region1) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
621 l[0] = bv; l[1] = 0; l[2] = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
622 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
623 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
624 l[0] = region1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
625 if(bv <= region2) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
626 l[1] = bv - l[0]; l[2] = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
627 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
628 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
629 l[1] = region2 - l[0]; l[2] = bv - region2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
630 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
631 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
632 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
633
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
634 if(gr_info->block_type == 2) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
635 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
636 * decoding with short or mixed mode BandIndex table
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
637 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
638 int i,max[4];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
639 int step=0,lwin=0,cb=0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
640 register real v = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
641 register int *m,mc;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
642
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
643 if(gr_info->mixed_block_flag) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
644 max[3] = -1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
645 max[0] = max[1] = max[2] = 2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
646 m = map[sfreq][0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
647 me = mapend[sfreq][0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
648 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
649 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
650 max[0] = max[1] = max[2] = max[3] = -1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
651 /* max[3] not really needed in this case */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
652 m = map[sfreq][1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
653 me = mapend[sfreq][1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
654 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
655
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
656 mc = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
657 for(i=0;i<2;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
658 int lp = l[i];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
659 struct newhuff *h = ht+gr_info->table_select[i];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
660 for(;lp;lp--,mc--) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
661 register int x,y;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
662 if( (!mc) ) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
663 mc = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
664 xrpnt = ((real *) xr) + (*m++);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
665 lwin = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
666 cb = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
667 if(lwin == 3) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
668 v = gr_info->pow2gain[(*scf++) << shift];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
669 step = 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
670 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
671 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
672 v = gr_info->full_gain[lwin][(*scf++) << shift];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
673 step = 3;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
674 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
675 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
676 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
677 register short *val = h->table;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
678 while((y=*val++)<0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
679 if (get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
680 val -= y;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
681 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
682 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
683 x = y >> 4;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
684 y &= 0xf;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
685 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
686 if(x == 15) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
687 max[lwin] = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
688 part2remain -= h->linbits+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
689 x += getbits(h->linbits);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
690 if(get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
691 *xrpnt = -ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
692 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
693 *xrpnt = ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
694 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
695 else if(x) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
696 max[lwin] = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
697 if(get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
698 *xrpnt = -ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
699 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
700 *xrpnt = ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
701 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
702 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
703 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
704 *xrpnt = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
705 xrpnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
706 if(y == 15) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
707 max[lwin] = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
708 part2remain -= h->linbits+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
709 y += getbits(h->linbits);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
710 if(get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
711 *xrpnt = -ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
712 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
713 *xrpnt = ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
714 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
715 else if(y) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
716 max[lwin] = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
717 if(get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
718 *xrpnt = -ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
719 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
720 *xrpnt = ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
721 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
722 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
723 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
724 *xrpnt = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
725 xrpnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
726 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
727 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
728 for(;l3 && (part2remain > 0);l3--) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
729 struct newhuff *h = htc+gr_info->count1table_select;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
730 register short *val = h->table,a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
731
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
732 while((a=*val++)<0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
733 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
734 if(part2remain < 0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
735 part2remain++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
736 a = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
737 break;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
738 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
739 if (get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
740 val -= a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
741 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
742
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
743 for(i=0;i<4;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
744 if(!(i & 1)) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
745 if(!mc) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
746 mc = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
747 xrpnt = ((real *) xr) + (*m++);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
748 lwin = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
749 cb = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
750 if(lwin == 3) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
751 v = gr_info->pow2gain[(*scf++) << shift];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
752 step = 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
753 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
754 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
755 v = gr_info->full_gain[lwin][(*scf++) << shift];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
756 step = 3;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
757 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
758 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
759 mc--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
760 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
761 if( (a & (0x8>>i)) ) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
762 max[lwin] = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
763 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
764 if(part2remain < 0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
765 part2remain++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
766 break;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
767 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
768 if(get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
769 *xrpnt = -v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
770 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
771 *xrpnt = v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
772 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
773 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
774 *xrpnt = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
775 xrpnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
776 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
777 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
778
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
779 while( m < me ) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
780 if(!mc) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
781 mc = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
782 xrpnt = ((real *) xr) + *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
783 if( (*m++) == 3)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
784 step = 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
785 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
786 step = 3;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
787 m++; /* cb */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
788 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
789 mc--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
790 *xrpnt = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
791 xrpnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
792 *xrpnt = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
793 xrpnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
794 /* we could add a little opt. here:
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
795 * if we finished a band for window 3 or a long band
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
796 * further bands could copied in a simple loop without a
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
797 * special 'map' decoding
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
798 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
799 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
800
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
801 gr_info->maxband[0] = max[0]+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
802 gr_info->maxband[1] = max[1]+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
803 gr_info->maxband[2] = max[2]+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
804 gr_info->maxbandl = max[3]+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
805
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
806 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
807 int rmax = max[0] > max[1] ? max[0] : max[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
808 rmax = (rmax > max[2] ? rmax : max[2]) + 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
809 gr_info->maxb = rmax ? shortLimit[sfreq][rmax] : longLimit[sfreq][max[3]+1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
810 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
811
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
812 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
813 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
814 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
815 * decoding with 'long' BandIndex table (block_type != 2)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
816 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
817 int *pretab = gr_info->preflag ? pretab1 : pretab2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
818 int i,max = -1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
819 int cb = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
820 register int *m = map[sfreq][2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
821 register real v = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
822 register int mc = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
823 #if 0
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
824 me = mapend[sfreq][2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
825 #endif
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
826
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
827 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
828 * long hash table values
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
829 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
830 for(i=0;i<3;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
831 int lp = l[i];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
832 struct newhuff *h = ht+gr_info->table_select[i];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
833
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
834 for(;lp;lp--,mc--) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
835 int x,y;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
836
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
837 if(!mc) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
838 mc = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
839 v = gr_info->pow2gain[((*scf++) + (*pretab++)) << shift];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
840 cb = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
841 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
842 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
843 register short *val = h->table;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
844 while((y=*val++)<0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
845 if (get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
846 val -= y;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
847 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
848 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
849 x = y >> 4;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
850 y &= 0xf;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
851 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
852 if (x == 15) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
853 max = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
854 part2remain -= h->linbits+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
855 x += getbits(h->linbits);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
856 if(get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
857 *xrpnt++ = -ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
858 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
859 *xrpnt++ = ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
860 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
861 else if(x) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
862 max = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
863 if(get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
864 *xrpnt++ = -ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
865 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
866 *xrpnt++ = ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
867 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
868 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
869 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
870 *xrpnt++ = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
871
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
872 if (y == 15) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
873 max = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
874 part2remain -= h->linbits+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
875 y += getbits(h->linbits);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
876 if(get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
877 *xrpnt++ = -ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
878 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
879 *xrpnt++ = ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
880 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
881 else if(y) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
882 max = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
883 if(get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
884 *xrpnt++ = -ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
885 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
886 *xrpnt++ = ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
887 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
888 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
889 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
890 *xrpnt++ = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
891 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
892 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
893
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
894 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
895 * short (count1table) values
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
896 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
897 for(;l3 && (part2remain > 0);l3--) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
898 struct newhuff *h = htc+gr_info->count1table_select;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
899 register short *val = h->table,a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
900
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
901 while((a=*val++)<0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
902 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
903 if(part2remain < 0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
904 part2remain++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
905 a = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
906 break;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
907 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
908 if (get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
909 val -= a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
910 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
911
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
912 for(i=0;i<4;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
913 if(!(i & 1)) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
914 if(!mc) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
915 mc = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
916 cb = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
917 v = gr_info->pow2gain[((*scf++) + (*pretab++)) << shift];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
918 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
919 mc--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
920 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
921 if ( (a & (0x8>>i)) ) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
922 max = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
923 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
924 if(part2remain < 0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
925 part2remain++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
926 break;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
927 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
928 if(get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
929 *xrpnt++ = -v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
930 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
931 *xrpnt++ = v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
932 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
933 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
934 *xrpnt++ = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
935 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
936 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
937
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
938 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
939 * zero part
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
940 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
941 for(i=(&xr[SBLIMIT][0]-xrpnt)>>1;i;i--) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
942 *xrpnt++ = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
943 *xrpnt++ = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
944 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
945
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
946 gr_info->maxbandl = max+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
947 gr_info->maxb = longLimit[sfreq][gr_info->maxbandl];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
948 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
949
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
950 while( part2remain > 16 ) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
951 getbits(16); /* Dismiss stuffing Bits */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
952 part2remain -= 16;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
953 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
954 if(part2remain > 0)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
955 getbits(part2remain);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
956 else if(part2remain < 0) {
400
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 387
diff changeset
957 char err[128];
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 387
diff changeset
958 snprintf(err, sizeof (err),
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 387
diff changeset
959 "MPGLIB: Can't rewind stream by %d bits!",
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 387
diff changeset
960 -part2remain);
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 387
diff changeset
961 BAIL_MACRO(err, 1); /* -> error */
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
962 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
963 return 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
964 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
965
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
966 #if 0
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
967 static int III_dequantize_sample_ms(real xr[2][SBLIMIT][SSLIMIT],int *scf,
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
968 struct gr_info_s *gr_info,int sfreq,int part2bits)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
969 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
970 int shift = 1 + gr_info->scalefac_scale;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
971 real *xrpnt = (real *) xr[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
972 real *xr0pnt = (real *) xr[0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
973 int l[3],l3;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
974 int part2remain = gr_info->part2_3_length - part2bits;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
975 int *me;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
976
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
977 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
978 int bv = gr_info->big_values;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
979 int region1 = gr_info->region1start;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
980 int region2 = gr_info->region2start;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
981
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
982 l3 = ((576>>1)-bv)>>1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
983 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
984 * we may lose the 'odd' bit here !!
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
985 * check this later gain
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
986 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
987 if(bv <= region1) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
988 l[0] = bv; l[1] = 0; l[2] = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
989 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
990 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
991 l[0] = region1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
992 if(bv <= region2) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
993 l[1] = bv - l[0]; l[2] = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
994 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
995 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
996 l[1] = region2 - l[0]; l[2] = bv - region2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
997 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
998 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
999 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1000
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1001 if(gr_info->block_type == 2) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1002 int i,max[4];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1003 int step=0,lwin=0,cb=0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1004 register real v = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1005 register int *m,mc = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1006
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1007 if(gr_info->mixed_block_flag) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1008 max[3] = -1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1009 max[0] = max[1] = max[2] = 2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1010 m = map[sfreq][0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1011 me = mapend[sfreq][0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1012 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1013 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1014 max[0] = max[1] = max[2] = max[3] = -1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1015 /* max[3] not really needed in this case */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1016 m = map[sfreq][1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1017 me = mapend[sfreq][1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1018 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1019
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1020 for(i=0;i<2;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1021 int lp = l[i];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1022 struct newhuff *h = ht+gr_info->table_select[i];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1023 for(;lp;lp--,mc--) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1024 int x,y;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1025
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1026 if(!mc) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1027 mc = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1028 xrpnt = ((real *) xr[1]) + *m;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1029 xr0pnt = ((real *) xr[0]) + *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1030 lwin = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1031 cb = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1032 if(lwin == 3) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1033 v = gr_info->pow2gain[(*scf++) << shift];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1034 step = 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1035 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1036 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1037 v = gr_info->full_gain[lwin][(*scf++) << shift];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1038 step = 3;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1039 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1040 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1041 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1042 register short *val = h->table;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1043 while((y=*val++)<0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1044 if (get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1045 val -= y;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1046 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1047 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1048 x = y >> 4;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1049 y &= 0xf;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1050 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1051 if(x == 15) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1052 max[lwin] = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1053 part2remain -= h->linbits+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1054 x += getbits(h->linbits);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1055 if(get1bit()) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1056 real a = ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1057 *xrpnt = *xr0pnt + a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1058 *xr0pnt -= a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1059 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1060 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1061 real a = ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1062 *xrpnt = *xr0pnt - a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1063 *xr0pnt += a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1064 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1065 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1066 else if(x) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1067 max[lwin] = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1068 if(get1bit()) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1069 real a = ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1070 *xrpnt = *xr0pnt + a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1071 *xr0pnt -= a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1072 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1073 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1074 real a = ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1075 *xrpnt = *xr0pnt - a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1076 *xr0pnt += a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1077 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1078 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1079 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1080 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1081 *xrpnt = *xr0pnt;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1082 xrpnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1083 xr0pnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1084
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1085 if(y == 15) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1086 max[lwin] = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1087 part2remain -= h->linbits+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1088 y += getbits(h->linbits);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1089 if(get1bit()) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1090 real a = ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1091 *xrpnt = *xr0pnt + a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1092 *xr0pnt -= a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1093 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1094 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1095 real a = ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1096 *xrpnt = *xr0pnt - a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1097 *xr0pnt += a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1098 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1099 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1100 else if(y) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1101 max[lwin] = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1102 if(get1bit()) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1103 real a = ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1104 *xrpnt = *xr0pnt + a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1105 *xr0pnt -= a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1106 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1107 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1108 real a = ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1109 *xrpnt = *xr0pnt - a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1110 *xr0pnt += a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1111 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1112 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1113 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1114 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1115 *xrpnt = *xr0pnt;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1116 xrpnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1117 xr0pnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1118 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1119 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1120
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1121 for(;l3 && (part2remain > 0);l3--) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1122 struct newhuff *h = htc+gr_info->count1table_select;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1123 register short *val = h->table,a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1124
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1125 while((a=*val++)<0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1126 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1127 if(part2remain < 0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1128 part2remain++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1129 a = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1130 break;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1131 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1132 if (get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1133 val -= a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1134 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1135
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1136 for(i=0;i<4;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1137 if(!(i & 1)) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1138 if(!mc) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1139 mc = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1140 xrpnt = ((real *) xr[1]) + *m;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1141 xr0pnt = ((real *) xr[0]) + *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1142 lwin = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1143 cb = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1144 if(lwin == 3) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1145 v = gr_info->pow2gain[(*scf++) << shift];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1146 step = 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1147 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1148 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1149 v = gr_info->full_gain[lwin][(*scf++) << shift];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1150 step = 3;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1151 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1152 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1153 mc--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1154 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1155 if( (a & (0x8>>i)) ) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1156 max[lwin] = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1157 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1158 if(part2remain < 0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1159 part2remain++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1160 break;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1161 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1162 if(get1bit()) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1163 *xrpnt = *xr0pnt + v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1164 *xr0pnt -= v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1165 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1166 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1167 *xrpnt = *xr0pnt - v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1168 *xr0pnt += v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1169 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1170 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1171 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1172 *xrpnt = *xr0pnt;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1173 xrpnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1174 xr0pnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1175 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1176 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1177
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1178 while( m < me ) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1179 if(!mc) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1180 mc = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1181 xrpnt = ((real *) xr[1]) + *m;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1182 xr0pnt = ((real *) xr[0]) + *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1183 if(*m++ == 3)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1184 step = 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1185 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1186 step = 3;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1187 m++; /* cb */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1188 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1189 mc--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1190 *xrpnt = *xr0pnt;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1191 xrpnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1192 xr0pnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1193 *xrpnt = *xr0pnt;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1194 xrpnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1195 xr0pnt += step;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1196 /* we could add a little opt. here:
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1197 * if we finished a band for window 3 or a long band
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1198 * further bands could copied in a simple loop without a
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1199 * special 'map' decoding
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1200 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1201 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1202
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1203 gr_info->maxband[0] = max[0]+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1204 gr_info->maxband[1] = max[1]+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1205 gr_info->maxband[2] = max[2]+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1206 gr_info->maxbandl = max[3]+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1207
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1208 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1209 int rmax = max[0] > max[1] ? max[0] : max[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1210 rmax = (rmax > max[2] ? rmax : max[2]) + 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1211 gr_info->maxb = rmax ? shortLimit[sfreq][rmax] : longLimit[sfreq][max[3]+1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1212 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1213 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1214 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1215 int *pretab = gr_info->preflag ? pretab1 : pretab2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1216 int i,max = -1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1217 int cb = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1218 register int mc=0,*m = map[sfreq][2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1219 register real v = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1220 #if 0
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1221 me = mapend[sfreq][2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1222 #endif
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1223
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1224 for(i=0;i<3;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1225 int lp = l[i];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1226 struct newhuff *h = ht+gr_info->table_select[i];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1227
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1228 for(;lp;lp--,mc--) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1229 int x,y;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1230 if(!mc) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1231 mc = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1232 cb = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1233 v = gr_info->pow2gain[((*scf++) + (*pretab++)) << shift];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1234 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1235 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1236 register short *val = h->table;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1237 while((y=*val++)<0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1238 if (get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1239 val -= y;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1240 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1241 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1242 x = y >> 4;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1243 y &= 0xf;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1244 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1245 if (x == 15) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1246 max = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1247 part2remain -= h->linbits+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1248 x += getbits(h->linbits);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1249 if(get1bit()) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1250 real a = ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1251 *xrpnt++ = *xr0pnt + a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1252 *xr0pnt++ -= a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1253 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1254 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1255 real a = ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1256 *xrpnt++ = *xr0pnt - a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1257 *xr0pnt++ += a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1258 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1259 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1260 else if(x) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1261 max = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1262 if(get1bit()) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1263 real a = ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1264 *xrpnt++ = *xr0pnt + a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1265 *xr0pnt++ -= a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1266 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1267 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1268 real a = ispow[x] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1269 *xrpnt++ = *xr0pnt - a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1270 *xr0pnt++ += a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1271 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1272 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1273 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1274 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1275 *xrpnt++ = *xr0pnt++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1276
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1277 if (y == 15) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1278 max = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1279 part2remain -= h->linbits+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1280 y += getbits(h->linbits);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1281 if(get1bit()) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1282 real a = ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1283 *xrpnt++ = *xr0pnt + a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1284 *xr0pnt++ -= a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1285 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1286 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1287 real a = ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1288 *xrpnt++ = *xr0pnt - a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1289 *xr0pnt++ += a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1290 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1291 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1292 else if(y) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1293 max = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1294 if(get1bit()) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1295 real a = ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1296 *xrpnt++ = *xr0pnt + a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1297 *xr0pnt++ -= a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1298 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1299 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1300 real a = ispow[y] * v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1301 *xrpnt++ = *xr0pnt - a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1302 *xr0pnt++ += a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1303 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1304 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1305 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1306 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1307 *xrpnt++ = *xr0pnt++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1308 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1309 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1310
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1311 for(;l3 && (part2remain > 0);l3--) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1312 struct newhuff *h = htc+gr_info->count1table_select;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1313 register short *val = h->table,a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1314
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1315 while((a=*val++)<0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1316 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1317 if(part2remain < 0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1318 part2remain++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1319 a = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1320 break;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1321 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1322 if (get1bit())
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1323 val -= a;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1324 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1325
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1326 for(i=0;i<4;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1327 if(!(i & 1)) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1328 if(!mc) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1329 mc = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1330 cb = *m++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1331 v = gr_info->pow2gain[((*scf++) + (*pretab++)) << shift];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1332 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1333 mc--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1334 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1335 if ( (a & (0x8>>i)) ) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1336 max = cb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1337 part2remain--;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1338 if(part2remain <= 0) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1339 part2remain++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1340 break;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1341 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1342 if(get1bit()) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1343 *xrpnt++ = *xr0pnt + v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1344 *xr0pnt++ -= v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1345 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1346 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1347 *xrpnt++ = *xr0pnt - v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1348 *xr0pnt++ += v;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1349 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1350 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1351 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1352 *xrpnt++ = *xr0pnt++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1353 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1354 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1355 for(i=(&xr[1][SBLIMIT][0]-xrpnt)>>1;i;i--) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1356 *xrpnt++ = *xr0pnt++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1357 *xrpnt++ = *xr0pnt++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1358 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1359
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1360 gr_info->maxbandl = max+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1361 gr_info->maxb = longLimit[sfreq][gr_info->maxbandl];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1362 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1363
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1364 while ( part2remain > 16 ) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1365 getbits(16); /* Dismiss stuffing Bits */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1366 part2remain -= 16;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1367 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1368 if(part2remain > 0 )
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1369 getbits(part2remain);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1370 else if(part2remain < 0) {
400
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 387
diff changeset
1371 char err[128];
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 387
diff changeset
1372 snprintf(err, sizeof (err),
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 387
diff changeset
1373 "MPGLIB: Can't rewind stream by %d bits!",
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 387
diff changeset
1374 -part2remain);
9d0b5ec9cc26 FIXME cleanups.
Ryan C. Gordon <icculus@icculus.org>
parents: 387
diff changeset
1375 BAIL_MACRO(err, 1); /* -> error */
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1376 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1377 return 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1378 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1379 #endif
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1380
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1381 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1382 * III_stereo: calculate real channel values for Joint-I-Stereo-mode
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1383 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1384 static void III_i_stereo(real xr_buf[2][SBLIMIT][SSLIMIT],int *scalefac,
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1385 struct gr_info_s *gr_info,int sfreq,int ms_stereo,int lsf)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1386 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1387 real (*xr)[SBLIMIT*SSLIMIT] = (real (*)[SBLIMIT*SSLIMIT] ) xr_buf;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1388 struct bandInfoStruct *bi = &bandInfo[sfreq];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1389 real *tab1,*tab2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1390
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1391 if(lsf) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1392 int p = gr_info->scalefac_compress & 0x1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1393 if(ms_stereo) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1394 tab1 = pow1_2[p]; tab2 = pow2_2[p];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1395 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1396 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1397 tab1 = pow1_1[p]; tab2 = pow2_1[p];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1398 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1399 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1400 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1401 if(ms_stereo) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1402 tab1 = tan1_2; tab2 = tan2_2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1403 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1404 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1405 tab1 = tan1_1; tab2 = tan2_1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1406 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1407 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1408
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1409 if (gr_info->block_type == 2)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1410 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1411 int lwin,do_l = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1412 if( gr_info->mixed_block_flag )
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1413 do_l = 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1414
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1415 for (lwin=0;lwin<3;lwin++) /* process each window */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1416 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1417 /* get first band with zero values */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1418 int is_p,sb,idx,sfb = gr_info->maxband[lwin]; /* sfb is minimal 3 for mixed mode */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1419 if(sfb > 3)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1420 do_l = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1421
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1422 for(;sfb<12;sfb++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1423 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1424 is_p = scalefac[sfb*3+lwin-gr_info->mixed_block_flag]; /* scale: 0-15 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1425 if(is_p != 7) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1426 real t1,t2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1427 sb = bi->shortDiff[sfb];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1428 idx = bi->shortIdx[sfb] + lwin;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1429 t1 = tab1[is_p]; t2 = tab2[is_p];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1430 for (; sb > 0; sb--,idx+=3)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1431 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1432 real v = xr[0][idx];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1433 xr[0][idx] = v * t1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1434 xr[1][idx] = v * t2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1435 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1436 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1437 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1438
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1439 #if 1
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1440 /* in the original: copy 10 to 11 , here: copy 11 to 12
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1441 maybe still wrong??? (copy 12 to 13?) */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1442 is_p = scalefac[11*3+lwin-gr_info->mixed_block_flag]; /* scale: 0-15 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1443 sb = bi->shortDiff[12];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1444 idx = bi->shortIdx[12] + lwin;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1445 #else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1446 is_p = scalefac[10*3+lwin-gr_info->mixed_block_flag]; /* scale: 0-15 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1447 sb = bi->shortDiff[11];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1448 idx = bi->shortIdx[11] + lwin;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1449 #endif
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1450 if(is_p != 7)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1451 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1452 real t1,t2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1453 t1 = tab1[is_p]; t2 = tab2[is_p];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1454 for ( ; sb > 0; sb--,idx+=3 )
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1455 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1456 real v = xr[0][idx];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1457 xr[0][idx] = v * t1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1458 xr[1][idx] = v * t2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1459 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1460 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1461 } /* end for(lwin; .. ; . ) */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1462
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1463 if (do_l)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1464 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1465 /* also check l-part, if ALL bands in the three windows are 'empty'
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1466 * and mode = mixed_mode
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1467 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1468 int sfb = gr_info->maxbandl;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1469 int idx = bi->longIdx[sfb];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1470
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1471 for ( ; sfb<8; sfb++ )
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1472 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1473 int sb = bi->longDiff[sfb];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1474 int is_p = scalefac[sfb]; /* scale: 0-15 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1475 if(is_p != 7) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1476 real t1,t2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1477 t1 = tab1[is_p]; t2 = tab2[is_p];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1478 for ( ; sb > 0; sb--,idx++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1479 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1480 real v = xr[0][idx];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1481 xr[0][idx] = v * t1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1482 xr[1][idx] = v * t2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1483 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1484 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1485 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1486 idx += sb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1487 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1488 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1489 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1490 else /* ((gr_info->block_type != 2)) */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1491 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1492 int sfb = gr_info->maxbandl;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1493 int is_p,idx = bi->longIdx[sfb];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1494 for ( ; sfb<21; sfb++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1495 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1496 int sb = bi->longDiff[sfb];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1497 is_p = scalefac[sfb]; /* scale: 0-15 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1498 if(is_p != 7) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1499 real t1,t2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1500 t1 = tab1[is_p]; t2 = tab2[is_p];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1501 for ( ; sb > 0; sb--,idx++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1502 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1503 real v = xr[0][idx];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1504 xr[0][idx] = v * t1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1505 xr[1][idx] = v * t2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1506 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1507 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1508 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1509 idx += sb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1510 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1511
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1512 is_p = scalefac[20]; /* copy l-band 20 to l-band 21 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1513 if(is_p != 7)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1514 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1515 int sb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1516 real t1 = tab1[is_p],t2 = tab2[is_p];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1517
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1518 for ( sb = bi->longDiff[21]; sb > 0; sb--,idx++ )
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1519 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1520 real v = xr[0][idx];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1521 xr[0][idx] = v * t1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1522 xr[1][idx] = v * t2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1523 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1524 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1525 } /* ... */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1526 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1527
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1528 static void III_antialias(real xr[SBLIMIT][SSLIMIT],struct gr_info_s *gr_info)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1529 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1530 int sblim;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1531
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1532 if(gr_info->block_type == 2)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1533 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1534 if(!gr_info->mixed_block_flag)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1535 return;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1536 sblim = 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1537 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1538 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1539 sblim = gr_info->maxb-1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1540 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1541
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1542 /* 31 alias-reduction operations between each pair of sub-bands */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1543 /* with 8 butterflies between each pair */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1544
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1545 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1546 int sb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1547 real *xr1=(real *) xr[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1548
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1549 for(sb=sblim;sb;sb--,xr1+=10)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1550 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1551 int ss;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1552 real *cs=aa_cs,*ca=aa_ca;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1553 real *xr2 = xr1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1554
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1555 for(ss=7;ss>=0;ss--)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1556 { /* upper and lower butterfly inputs */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1557 register real bu = *--xr2,bd = *xr1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1558 *xr2 = (bu * (*cs) ) - (bd * (*ca) );
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1559 *xr1++ = (bd * (*cs++) ) + (bu * (*ca++) );
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1560 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1561 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1562 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1563 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1564
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1565 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1566 DCT insipired by Jeff Tsay's DCT from the maplay package
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1567 this is an optimized version with manual unroll.
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1568
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1569 References:
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1570 [1] S. Winograd: "On Computing the Discrete Fourier Transform",
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1571 Mathematics of Computation, Volume 32, Number 141, January 1978,
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1572 Pages 175-199
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1573 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1574
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1575 static void dct36(real *inbuf,real *o1,real *o2,real *wintab,real *tsbuf)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1576 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1577 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1578 register real *in = inbuf;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1579
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1580 in[17]+=in[16]; in[16]+=in[15]; in[15]+=in[14];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1581 in[14]+=in[13]; in[13]+=in[12]; in[12]+=in[11];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1582 in[11]+=in[10]; in[10]+=in[9]; in[9] +=in[8];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1583 in[8] +=in[7]; in[7] +=in[6]; in[6] +=in[5];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1584 in[5] +=in[4]; in[4] +=in[3]; in[3] +=in[2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1585 in[2] +=in[1]; in[1] +=in[0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1586
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1587 in[17]+=in[15]; in[15]+=in[13]; in[13]+=in[11]; in[11]+=in[9];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1588 in[9] +=in[7]; in[7] +=in[5]; in[5] +=in[3]; in[3] +=in[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1589
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1590
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1591 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1592
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1593 #define MACRO0(v) { \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1594 real tmp; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1595 out2[9+(v)] = (tmp = sum0 + sum1) * w[27+(v)]; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1596 out2[8-(v)] = tmp * w[26-(v)]; } \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1597 sum0 -= sum1; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1598 ts[SBLIMIT*(8-(v))] = out1[8-(v)] + sum0 * w[8-(v)]; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1599 ts[SBLIMIT*(9+(v))] = out1[9+(v)] + sum0 * w[9+(v)];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1600 #define MACRO1(v) { \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1601 real sum0,sum1; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1602 sum0 = tmp1a + tmp2a; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1603 sum1 = (tmp1b + tmp2b) * tfcos36[(v)]; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1604 MACRO0(v); }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1605 #define MACRO2(v) { \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1606 real sum0,sum1; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1607 sum0 = tmp2a - tmp1a; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1608 sum1 = (tmp2b - tmp1b) * tfcos36[(v)]; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1609 MACRO0(v); }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1610
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1611 register const real *c = COS9;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1612 register real *out2 = o2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1613 register real *w = wintab;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1614 register real *out1 = o1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1615 register real *ts = tsbuf;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1616
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1617 real ta33,ta66,tb33,tb66;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1618
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1619 ta33 = in[2*3+0] * c[3];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1620 ta66 = in[2*6+0] * c[6];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1621 tb33 = in[2*3+1] * c[3];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1622 tb66 = in[2*6+1] * c[6];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1623
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1624 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1625 real tmp1a,tmp2a,tmp1b,tmp2b;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1626 tmp1a = in[2*1+0] * c[1] + ta33 + in[2*5+0] * c[5] + in[2*7+0] * c[7];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1627 tmp1b = in[2*1+1] * c[1] + tb33 + in[2*5+1] * c[5] + in[2*7+1] * c[7];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1628 tmp2a = in[2*0+0] + in[2*2+0] * c[2] + in[2*4+0] * c[4] + ta66 + in[2*8+0] * c[8];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1629 tmp2b = in[2*0+1] + in[2*2+1] * c[2] + in[2*4+1] * c[4] + tb66 + in[2*8+1] * c[8];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1630
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1631 MACRO1(0);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1632 MACRO2(8);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1633 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1634
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1635 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1636 real tmp1a,tmp2a,tmp1b,tmp2b;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1637 tmp1a = ( in[2*1+0] - in[2*5+0] - in[2*7+0] ) * c[3];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1638 tmp1b = ( in[2*1+1] - in[2*5+1] - in[2*7+1] ) * c[3];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1639 tmp2a = ( in[2*2+0] - in[2*4+0] - in[2*8+0] ) * c[6] - in[2*6+0] + in[2*0+0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1640 tmp2b = ( in[2*2+1] - in[2*4+1] - in[2*8+1] ) * c[6] - in[2*6+1] + in[2*0+1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1641
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1642 MACRO1(1);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1643 MACRO2(7);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1644 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1645
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1646 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1647 real tmp1a,tmp2a,tmp1b,tmp2b;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1648 tmp1a = in[2*1+0] * c[5] - ta33 - in[2*5+0] * c[7] + in[2*7+0] * c[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1649 tmp1b = in[2*1+1] * c[5] - tb33 - in[2*5+1] * c[7] + in[2*7+1] * c[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1650 tmp2a = in[2*0+0] - in[2*2+0] * c[8] - in[2*4+0] * c[2] + ta66 + in[2*8+0] * c[4];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1651 tmp2b = in[2*0+1] - in[2*2+1] * c[8] - in[2*4+1] * c[2] + tb66 + in[2*8+1] * c[4];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1652
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1653 MACRO1(2);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1654 MACRO2(6);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1655 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1656
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1657 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1658 real tmp1a,tmp2a,tmp1b,tmp2b;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1659 tmp1a = in[2*1+0] * c[7] - ta33 + in[2*5+0] * c[1] - in[2*7+0] * c[5];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1660 tmp1b = in[2*1+1] * c[7] - tb33 + in[2*5+1] * c[1] - in[2*7+1] * c[5];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1661 tmp2a = in[2*0+0] - in[2*2+0] * c[4] + in[2*4+0] * c[8] + ta66 - in[2*8+0] * c[2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1662 tmp2b = in[2*0+1] - in[2*2+1] * c[4] + in[2*4+1] * c[8] + tb66 - in[2*8+1] * c[2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1663
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1664 MACRO1(3);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1665 MACRO2(5);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1666 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1667
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1668 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1669 real sum0,sum1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1670 sum0 = in[2*0+0] - in[2*2+0] + in[2*4+0] - in[2*6+0] + in[2*8+0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1671 sum1 = (in[2*0+1] - in[2*2+1] + in[2*4+1] - in[2*6+1] + in[2*8+1] ) * tfcos36[4];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1672 MACRO0(4);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1673 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1674 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1675
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1676 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1677 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1678
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1679 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1680 * new DCT12
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1681 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1682 static void dct12(real *in,real *rawout1,real *rawout2,register real *wi,register real *ts)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1683 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1684 #define DCT12_PART1 \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1685 in5 = in[5*3]; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1686 in5 += (in4 = in[4*3]); \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1687 in4 += (in3 = in[3*3]); \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1688 in3 += (in2 = in[2*3]); \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1689 in2 += (in1 = in[1*3]); \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1690 in1 += (in0 = in[0*3]); \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1691 \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1692 in5 += in3; in3 += in1; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1693 \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1694 in2 *= COS6_1; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1695 in3 *= COS6_1; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1696
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1697 #define DCT12_PART2 \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1698 in0 += in4 * COS6_2; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1699 \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1700 in4 = in0 + in2; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1701 in0 -= in2; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1702 \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1703 in1 += in5 * COS6_2; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1704 \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1705 in5 = (in1 + in3) * tfcos12[0]; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1706 in1 = (in1 - in3) * tfcos12[2]; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1707 \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1708 in3 = in4 + in5; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1709 in4 -= in5; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1710 \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1711 in2 = in0 + in1; \
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1712 in0 -= in1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1713
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1714
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1715 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1716 real in0,in1,in2,in3,in4,in5;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1717 register real *out1 = rawout1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1718 ts[SBLIMIT*0] = out1[0]; ts[SBLIMIT*1] = out1[1]; ts[SBLIMIT*2] = out1[2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1719 ts[SBLIMIT*3] = out1[3]; ts[SBLIMIT*4] = out1[4]; ts[SBLIMIT*5] = out1[5];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1720
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1721 DCT12_PART1
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1722
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1723 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1724 real tmp0,tmp1 = (in0 - in4);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1725 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1726 real tmp2 = (in1 - in5) * tfcos12[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1727 tmp0 = tmp1 + tmp2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1728 tmp1 -= tmp2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1729 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1730 ts[(17-1)*SBLIMIT] = out1[17-1] + tmp0 * wi[11-1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1731 ts[(12+1)*SBLIMIT] = out1[12+1] + tmp0 * wi[6+1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1732 ts[(6 +1)*SBLIMIT] = out1[6 +1] + tmp1 * wi[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1733 ts[(11-1)*SBLIMIT] = out1[11-1] + tmp1 * wi[5-1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1734 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1735
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1736 DCT12_PART2
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1737
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1738 ts[(17-0)*SBLIMIT] = out1[17-0] + in2 * wi[11-0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1739 ts[(12+0)*SBLIMIT] = out1[12+0] + in2 * wi[6+0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1740 ts[(12+2)*SBLIMIT] = out1[12+2] + in3 * wi[6+2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1741 ts[(17-2)*SBLIMIT] = out1[17-2] + in3 * wi[11-2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1742
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1743 ts[(6+0)*SBLIMIT] = out1[6+0] + in0 * wi[0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1744 ts[(11-0)*SBLIMIT] = out1[11-0] + in0 * wi[5-0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1745 ts[(6+2)*SBLIMIT] = out1[6+2] + in4 * wi[2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1746 ts[(11-2)*SBLIMIT] = out1[11-2] + in4 * wi[5-2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1747 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1748
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1749 in++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1750
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1751 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1752 real in0,in1,in2,in3,in4,in5;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1753 register real *out2 = rawout2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1754
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1755 DCT12_PART1
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1756
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1757 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1758 real tmp0,tmp1 = (in0 - in4);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1759 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1760 real tmp2 = (in1 - in5) * tfcos12[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1761 tmp0 = tmp1 + tmp2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1762 tmp1 -= tmp2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1763 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1764 out2[5-1] = tmp0 * wi[11-1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1765 out2[0+1] = tmp0 * wi[6+1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1766 ts[(12+1)*SBLIMIT] += tmp1 * wi[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1767 ts[(17-1)*SBLIMIT] += tmp1 * wi[5-1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1768 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1769
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1770 DCT12_PART2
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1771
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1772 out2[5-0] = in2 * wi[11-0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1773 out2[0+0] = in2 * wi[6+0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1774 out2[0+2] = in3 * wi[6+2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1775 out2[5-2] = in3 * wi[11-2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1776
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1777 ts[(12+0)*SBLIMIT] += in0 * wi[0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1778 ts[(17-0)*SBLIMIT] += in0 * wi[5-0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1779 ts[(12+2)*SBLIMIT] += in4 * wi[2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1780 ts[(17-2)*SBLIMIT] += in4 * wi[5-2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1781 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1782
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1783 in++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1784
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1785 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1786 real in0,in1,in2,in3,in4,in5;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1787 register real *out2 = rawout2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1788 out2[12]=out2[13]=out2[14]=out2[15]=out2[16]=out2[17]=0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1789
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1790 DCT12_PART1
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1791
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1792 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1793 real tmp0,tmp1 = (in0 - in4);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1794 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1795 real tmp2 = (in1 - in5) * tfcos12[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1796 tmp0 = tmp1 + tmp2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1797 tmp1 -= tmp2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1798 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1799 out2[11-1] = tmp0 * wi[11-1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1800 out2[6 +1] = tmp0 * wi[6+1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1801 out2[0+1] += tmp1 * wi[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1802 out2[5-1] += tmp1 * wi[5-1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1803 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1804
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1805 DCT12_PART2
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1806
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1807 out2[11-0] = in2 * wi[11-0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1808 out2[6 +0] = in2 * wi[6+0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1809 out2[6 +2] = in3 * wi[6+2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1810 out2[11-2] = in3 * wi[11-2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1811
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1812 out2[0+0] += in0 * wi[0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1813 out2[5-0] += in0 * wi[5-0];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1814 out2[0+2] += in4 * wi[2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1815 out2[5-2] += in4 * wi[5-2];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1816 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1817 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1818
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1819 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1820 * III_hybrid
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1821 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1822 static void III_hybrid(real fsIn[SBLIMIT][SSLIMIT],real tsOut[SSLIMIT][SBLIMIT],
279
52b9f37998db Removed global state variable; should be thread safe now.
Ryan C. Gordon <icculus@icculus.org>
parents: 274
diff changeset
1823 int ch,struct gr_info_s *gr_info,struct mpstr *mp)
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1824 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1825 real *tspnt = (real *) tsOut;
279
52b9f37998db Removed global state variable; should be thread safe now.
Ryan C. Gordon <icculus@icculus.org>
parents: 274
diff changeset
1826 real (*block)[2][SBLIMIT*SSLIMIT] = mp->hybrid_block;
52b9f37998db Removed global state variable; should be thread safe now.
Ryan C. Gordon <icculus@icculus.org>
parents: 274
diff changeset
1827 int *blc = mp->hybrid_blc;
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1828 real *rawout1,*rawout2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1829 int bt;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1830 int sb = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1831
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1832 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1833 int b = blc[ch];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1834 rawout1=block[b][ch];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1835 b=-b+1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1836 rawout2=block[b][ch];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1837 blc[ch] = b;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1838 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1839
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1840
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1841 if(gr_info->mixed_block_flag) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1842 sb = 2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1843 dct36(fsIn[0],rawout1,rawout2,win[0],tspnt);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1844 dct36(fsIn[1],rawout1+18,rawout2+18,win1[0],tspnt+1);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1845 rawout1 += 36; rawout2 += 36; tspnt += 2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1846 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1847
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1848 bt = gr_info->block_type;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1849 if(bt == 2) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1850 for (; sb<gr_info->maxb; sb+=2,tspnt+=2,rawout1+=36,rawout2+=36) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1851 dct12(fsIn[sb],rawout1,rawout2,win[2],tspnt);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1852 dct12(fsIn[sb+1],rawout1+18,rawout2+18,win1[2],tspnt+1);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1853 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1854 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1855 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1856 for (; sb<gr_info->maxb; sb+=2,tspnt+=2,rawout1+=36,rawout2+=36) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1857 dct36(fsIn[sb],rawout1,rawout2,win[bt],tspnt);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1858 dct36(fsIn[sb+1],rawout1+18,rawout2+18,win1[bt],tspnt+1);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1859 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1860 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1861
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1862 for(;sb<SBLIMIT;sb++,tspnt++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1863 int i;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1864 for(i=0;i<SSLIMIT;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1865 tspnt[i*SBLIMIT] = *rawout1++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1866 *rawout2++ = 0.0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1867 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1868 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1869 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1870
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1871 /*
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1872 * main layer3 handler
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1873 */
281
ad4c8f34136a Minor formatting updates.
Ryan C. Gordon <icculus@icculus.org>
parents: 279
diff changeset
1874 int do_layer3(struct frame *fr,unsigned char *pcm_sample,
ad4c8f34136a Minor formatting updates.
Ryan C. Gordon <icculus@icculus.org>
parents: 279
diff changeset
1875 int *pcm_point,struct mpstr *mp)
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1876 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1877 int gr, ch, ss,clip=0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1878 int scalefacs[2][39]; /* max 39 for short[13][3] mode, mixed: 38, long: 22 */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1879 struct III_sideinfo sideinfo;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1880 int stereo = fr->stereo;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1881 int single = fr->single;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1882 int ms_stereo,i_stereo;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1883 int sfreq = fr->sampling_frequency;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1884 int stereo1,granules;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1885
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1886 if(stereo == 1) { /* stream is mono */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1887 stereo1 = 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1888 single = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1889 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1890 else if(single >= 0) /* stream is stereo, but force to mono */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1891 stereo1 = 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1892 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1893 stereo1 = 2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1894
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1895 if(fr->mode == MPG_MD_JOINT_STEREO) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1896 ms_stereo = fr->mode_ext & 0x2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1897 i_stereo = fr->mode_ext & 0x1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1898 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1899 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1900 ms_stereo = i_stereo = 0;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1901
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1902 if(fr->lsf) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1903 granules = 1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1904 if(!III_get_side_info_2(&sideinfo,stereo,ms_stereo,sfreq,single))
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1905 return -1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1906 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1907 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1908 granules = 2;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1909 #ifdef MPEG1
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1910 if(!III_get_side_info_1(&sideinfo,stereo,ms_stereo,sfreq,single))
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1911 return -1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1912 #else
387
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL*_MACRO)
Ryan C. Gordon <icculus@icculus.org>
parents: 299
diff changeset
1913 __Sound_SetError("MPGLIB: Not supported!");
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1914 #endif
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1915 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1916
279
52b9f37998db Removed global state variable; should be thread safe now.
Ryan C. Gordon <icculus@icculus.org>
parents: 274
diff changeset
1917 if(set_pointer(sideinfo.main_data_begin,mp) == MP3_ERR)
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1918 return -1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1919
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1920 for (gr=0;gr<granules;gr++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1921 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1922 real hybridIn[2][SBLIMIT][SSLIMIT];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1923 real hybridOut[2][SSLIMIT][SBLIMIT];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1924
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1925 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1926 struct gr_info_s *gr_info = &(sideinfo.ch[0].gr[gr]);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1927 long part2bits;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1928 if(fr->lsf)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1929 part2bits = III_get_scale_factors_2(scalefacs[0],gr_info,0);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1930 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1931 #ifdef MPEG1
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1932 part2bits = III_get_scale_factors_1(scalefacs[0],gr_info);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1933 #else
387
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL*_MACRO)
Ryan C. Gordon <icculus@icculus.org>
parents: 299
diff changeset
1934 __Sound_SetError("MPGLIB: Not supported!");
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1935 #endif
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1936 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1937 if(III_dequantize_sample(hybridIn[0], scalefacs[0],gr_info,sfreq,part2bits))
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1938 return clip;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1939 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1940 if(stereo == 2) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1941 struct gr_info_s *gr_info = &(sideinfo.ch[1].gr[gr]);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1942 long part2bits;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1943 if(fr->lsf)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1944 part2bits = III_get_scale_factors_2(scalefacs[1],gr_info,i_stereo);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1945 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1946 #ifdef MPEG1
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1947 part2bits = III_get_scale_factors_1(scalefacs[1],gr_info);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1948 #else
387
fb519e6028e3 Changed all the Sound_SetError() calls to __Sound_SetError (or BAIL*_MACRO)
Ryan C. Gordon <icculus@icculus.org>
parents: 299
diff changeset
1949 __Sound_SetError("MPGLIB: Not supported!");
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1950 #endif
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1951 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1952
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1953 if(III_dequantize_sample(hybridIn[1],scalefacs[1],gr_info,sfreq,part2bits))
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1954 return clip;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1955
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1956 if(ms_stereo) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1957 int i;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1958 for(i=0;i<SBLIMIT*SSLIMIT;i++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1959 real tmp0,tmp1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1960 tmp0 = ((real *) hybridIn[0])[i];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1961 tmp1 = ((real *) hybridIn[1])[i];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1962 ((real *) hybridIn[0])[i] = tmp0 + tmp1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1963 ((real *) hybridIn[1])[i] = tmp0 - tmp1;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1964 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1965 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1966
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1967 if(i_stereo)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1968 III_i_stereo(hybridIn,scalefacs[1],gr_info,sfreq,ms_stereo,fr->lsf);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1969
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1970 if(ms_stereo || i_stereo || (single == 3) ) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1971 if(gr_info->maxb > sideinfo.ch[0].gr[gr].maxb)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1972 sideinfo.ch[0].gr[gr].maxb = gr_info->maxb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1973 else
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1974 gr_info->maxb = sideinfo.ch[0].gr[gr].maxb;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1975 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1976
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1977 switch(single) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1978 case 3:
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1979 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1980 register int i;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1981 register real *in0 = (real *) hybridIn[0],*in1 = (real *) hybridIn[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1982 for(i=0;i<SSLIMIT*gr_info->maxb;i++,in0++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1983 *in0 = (*in0 + *in1++); /* *0.5 done by pow-scale */
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1984 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1985 break;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1986 case 1:
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1987 {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1988 register int i;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1989 register real *in0 = (real *) hybridIn[0],*in1 = (real *) hybridIn[1];
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1990 for(i=0;i<SSLIMIT*gr_info->maxb;i++)
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1991 *in0++ = *in1++;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1992 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1993 break;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1994 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1995 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1996
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1997 for(ch=0;ch<stereo1;ch++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1998 struct gr_info_s *gr_info = &(sideinfo.ch[ch].gr[gr]);
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1999 III_antialias(hybridIn[ch],gr_info);
279
52b9f37998db Removed global state variable; should be thread safe now.
Ryan C. Gordon <icculus@icculus.org>
parents: 274
diff changeset
2000 III_hybrid(hybridIn[ch], hybridOut[ch], ch,gr_info,mp);
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2001 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2002
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2003 for(ss=0;ss<SSLIMIT;ss++) {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2004 if(single >= 0) {
279
52b9f37998db Removed global state variable; should be thread safe now.
Ryan C. Gordon <icculus@icculus.org>
parents: 274
diff changeset
2005 clip += synth_1to1_mono(hybridOut[0][ss],pcm_sample,pcm_point,mp);
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2006 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2007 else {
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2008 int p1 = *pcm_point;
279
52b9f37998db Removed global state variable; should be thread safe now.
Ryan C. Gordon <icculus@icculus.org>
parents: 274
diff changeset
2009 clip += synth_1to1(hybridOut[0][ss],0,pcm_sample,&p1,mp);
52b9f37998db Removed global state variable; should be thread safe now.
Ryan C. Gordon <icculus@icculus.org>
parents: 274
diff changeset
2010 clip += synth_1to1(hybridOut[1][ss],1,pcm_sample,pcm_point,mp);
261
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2011 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2012 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2013 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2014
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2015 return clip;
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2016 }
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2017
9b6e82f7c853 Initial add.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
2018