annotate decoders/libmpg123/layer3.c @ 577:af33b35a55c1

Minor cleanups. Ready to release.
author Eric Wing <ewing . public |-at-| gmail . com>
date Sat, 23 Oct 2010 22:35:38 -0700
parents 7e08477b0fc1
children
rev   line source
562
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1 /*
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2 leyer3.c: the layer 3 decoder
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3
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4 copyright 1995-2008 by the mpg123 project - free software under the terms of the LGPL 2.1
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5 see COPYING and AUTHORS files in distribution or http://mpg123.org
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6 initially written by Michael Hipp
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7
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8 Optimize-TODO: put short bands into the band-field without the stride of 3 reals
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9 Length-optimze: unify long and short band code where it is possible
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10
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11 The int-vs-pointer situation has to be cleaned up.
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12 */
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13
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14 #include "mpg123lib_intern.h"
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15 #include "huffman.h"
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16 #include "getbits.h"
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17 #include "debug.h"
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18
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19 /* static one-time calculated tables... or so */
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20 static real ispow[8207];
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21 static real aa_ca[8],aa_cs[8];
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22 static real COS1[12][6];
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23 static real win[4][36];
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24 static real win1[4][36];
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25 real COS9[9]; /* dct36_3dnow wants to use that */
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26 static real COS6_1,COS6_2;
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27 real tfcos36[9]; /* dct36_3dnow wants to use that */
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28 static real tfcos12[3];
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29 #define NEW_DCT9
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30 #ifdef NEW_DCT9
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31 static real cos9[3],cos18[3];
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32 #endif
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33
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34 struct gr_info_s {
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35 int scfsi;
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36 unsigned part2_3_length;
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37 unsigned big_values;
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38 unsigned scalefac_compress;
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39 unsigned block_type;
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40 unsigned mixed_block_flag;
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41 unsigned table_select[3];
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42 unsigned subblock_gain[3];
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43 unsigned maxband[3];
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44 unsigned maxbandl;
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45 unsigned maxb;
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46 unsigned region1start;
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47 unsigned region2start;
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48 unsigned preflag;
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49 unsigned scalefac_scale;
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50 unsigned count1table_select;
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51 real *full_gain[3];
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52 real *pow2gain;
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53 };
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54
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55 struct III_sideinfo
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56 {
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57 unsigned main_data_begin;
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58 unsigned private_bits;
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59 struct {
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60 struct gr_info_s gr[2];
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61 } ch[2];
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62 };
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63
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64
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65 struct bandInfoStruct {
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66 int longIdx[23];
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67 int longDiff[22];
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68 int shortIdx[14];
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69 int shortDiff[13];
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70 };
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71
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72
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73 const struct bandInfoStruct bandInfo[9] = {
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74
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75 /* MPEG 1.0 */
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76 { {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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77 {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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78 {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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79 {4,4,4,4,6,8,10,12,14,18,22,30,56} } ,
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80
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81 { {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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82 {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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83 {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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84 {4,4,4,4,6,6,10,12,14,16,20,26,66} } ,
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85
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86 { {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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87 {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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88 {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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89 {4,4,4,4,6,8,12,16,20,26,34,42,12} } ,
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90
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91 /* MPEG 2.0 */
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92 { {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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93 {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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94 {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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95 {4,4,4,6,6,8,10,14,18,26,32,42,18 } } ,
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96
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97 /* Twiddling 3 values here (not just 330->332!) fixed bug 1895025. */
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98 { {0,6,12,18,24,30,36,44,54,66,80,96,114,136,162,194,232,278,332,394,464,540,576},
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99 {6,6,6,6,6,6,8,10,12,14,16,18,22,26,32,38,46,54,62,70,76,36 } ,
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100 {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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101 {4,4,4,6,8,10,12,14,18,24,32,44,12 } } ,
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102
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103 { {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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104 {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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105 {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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106 {4,4,4,6,8,10,12,14,18,24,30,40,18 } } ,
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107 /* MPEG 2.5 */
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108 { {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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109 {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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110 {0,12,24,36,54,78,108,144,186,240,312,402,522,576},
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111 {4,4,4,6,8,10,12,14,18,24,30,40,18} },
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112 { {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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113 {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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114 {0,12,24,36,54,78,108,144,186,240,312,402,522,576},
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115 {4,4,4,6,8,10,12,14,18,24,30,40,18} },
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116 { {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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117 {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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118 {0, 24, 48, 72,108,156,216,288,372,480,486,492,498,576},
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119 {8,8,8,12,16,20,24,28,36,2,2,2,26} } ,
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120 };
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121
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122 static int mapbuf0[9][152];
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123 static int mapbuf1[9][156];
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124 static int mapbuf2[9][44];
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125 static int *map[9][3];
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126 static int *mapend[9][3];
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127
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128 static unsigned int n_slen2[512]; /* MPEG 2.0 slen for 'normal' mode */
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129 static unsigned int i_slen2[256]; /* MPEG 2.0 slen for intensity stereo */
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130
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131 static real tan1_1[16],tan2_1[16],tan1_2[16],tan2_2[16];
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132 static real pow1_1[2][16],pow2_1[2][16],pow1_2[2][16],pow2_2[2][16];
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133
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134 #ifdef OPT_MMXORSSE
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135 real init_layer3_gainpow2_mmx(mpg123_handle *fr, int i)
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diff changeset
136 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
137 if(!fr->p.down_sample) return 16384.0 * pow((double)2.0,-0.25 * (double) (i+210) );
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
138 else return DOUBLE_TO_REAL(pow((double)2.0,-0.25 * (double) (i+210)));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
139 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
140 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
141
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
142 real init_layer3_gainpow2(mpg123_handle *fr, int i)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
143 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
144 return DOUBLE_TO_REAL(pow((double)2.0,-0.25 * (double) (i+210)));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
145 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
146
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
147 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
148 * init tables for layer-3 ... specific with the downsampling...
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
149 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
150 void init_layer3(void)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
151 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
152 int i,j,k,l;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
153
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
154 for(i=0;i<8207;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
155 ispow[i] = DOUBLE_TO_REAL(pow((double)i,(double)4.0/3.0));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
156
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
157 for (i=0;i<8;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
158 const double Ci[8]={-0.6,-0.535,-0.33,-0.185,-0.095,-0.041,-0.0142,-0.0037};
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
159 double sq=sqrt(1.0+Ci[i]*Ci[i]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
160 aa_cs[i] = DOUBLE_TO_REAL(1.0/sq);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
161 aa_ca[i] = DOUBLE_TO_REAL(Ci[i]/sq);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
162 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
163
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
164 for(i=0;i<18;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
165 win[0][i] = win[1][i] = DOUBLE_TO_REAL(0.5 * sin( M_PI / 72.0 * (double) (2*(i+0) +1) ) / cos ( M_PI * (double) (2*(i+0) +19) / 72.0 ));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
166 win[0][i+18] = win[3][i+18] = DOUBLE_TO_REAL(0.5 * sin( M_PI / 72.0 * (double) (2*(i+18)+1) ) / cos ( M_PI * (double) (2*(i+18)+19) / 72.0 ));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
167 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
168 for(i=0;i<6;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
169 win[1][i+18] = DOUBLE_TO_REAL(0.5 / cos ( M_PI * (double) (2*(i+18)+19) / 72.0 ));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
170 win[3][i+12] = DOUBLE_TO_REAL(0.5 / cos ( M_PI * (double) (2*(i+12)+19) / 72.0 ));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
171 win[1][i+24] = DOUBLE_TO_REAL(0.5 * sin( M_PI / 24.0 * (double) (2*i+13) ) / cos ( M_PI * (double) (2*(i+24)+19) / 72.0 ));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
172 win[1][i+30] = win[3][i] = DOUBLE_TO_REAL(0.0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
173 win[3][i+6 ] = DOUBLE_TO_REAL(0.5 * sin( M_PI / 24.0 * (double) (2*i+1) ) / cos ( M_PI * (double) (2*(i+6 )+19) / 72.0 ));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
174 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
175
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
176 for(i=0;i<9;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
177 COS9[i] = DOUBLE_TO_REAL(cos( M_PI / 18.0 * (double) i));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
178
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
179 for(i=0;i<9;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
180 tfcos36[i] = DOUBLE_TO_REAL(0.5 / cos ( M_PI * (double) (i*2+1) / 36.0 ));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
181 for(i=0;i<3;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
182 tfcos12[i] = DOUBLE_TO_REAL(0.5 / cos ( M_PI * (double) (i*2+1) / 12.0 ));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
183
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
184 COS6_1 = DOUBLE_TO_REAL(cos( M_PI / 6.0 * (double) 1));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
185 COS6_2 = DOUBLE_TO_REAL(cos( M_PI / 6.0 * (double) 2));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
186
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
187 #ifdef NEW_DCT9
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
188 cos9[0] = DOUBLE_TO_REAL(cos(1.0*M_PI/9.0));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
189 cos9[1] = DOUBLE_TO_REAL(cos(5.0*M_PI/9.0));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
190 cos9[2] = DOUBLE_TO_REAL(cos(7.0*M_PI/9.0));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
191 cos18[0] = DOUBLE_TO_REAL(cos(1.0*M_PI/18.0));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
192 cos18[1] = DOUBLE_TO_REAL(cos(11.0*M_PI/18.0));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
193 cos18[2] = DOUBLE_TO_REAL(cos(13.0*M_PI/18.0));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
194 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
195
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
196 for(i=0;i<12;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
197 win[2][i] = DOUBLE_TO_REAL(0.5 * sin( M_PI / 24.0 * (double) (2*i+1) ) / cos ( M_PI * (double) (2*i+7) / 24.0 ));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
198 for(j=0;j<6;j++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
199 COS1[i][j] = DOUBLE_TO_REAL(cos( M_PI / 24.0 * (double) ((2*i+7)*(2*j+1)) ));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
200 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
201
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
202 for(j=0;j<4;j++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
203 const int len[4] = { 36,36,12,36 };
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
204 for(i=0;i<len[j];i+=2)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
205 win1[j][i] = + win[j][i];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
206 for(i=1;i<len[j];i+=2)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
207 win1[j][i] = - win[j][i];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
208 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
209
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
210 for(i=0;i<16;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
211 double t = tan( (double) i * M_PI / 12.0 );
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
212 tan1_1[i] = DOUBLE_TO_REAL(t / (1.0+t));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
213 tan2_1[i] = DOUBLE_TO_REAL(1.0 / (1.0 + t));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
214 tan1_2[i] = DOUBLE_TO_REAL(M_SQRT2 * t / (1.0+t));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
215 tan2_2[i] = DOUBLE_TO_REAL(M_SQRT2 / (1.0 + t));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
216
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
217 for(j=0;j<2;j++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
218 double base = pow(2.0,-0.25*(j+1.0));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
219 double p1=1.0,p2=1.0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
220 if(i > 0) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
221 if( i & 1 )
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
222 p1 = pow(base,(i+1.0)*0.5);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
223 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
224 p2 = pow(base,i*0.5);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
225 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
226 pow1_1[j][i] = DOUBLE_TO_REAL(p1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
227 pow2_1[j][i] = DOUBLE_TO_REAL(p2);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
228 pow1_2[j][i] = DOUBLE_TO_REAL(M_SQRT2 * p1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
229 pow2_2[j][i] = DOUBLE_TO_REAL(M_SQRT2 * p2);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
230 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
231 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
232
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
233 for(j=0;j<9;j++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
234 const struct bandInfoStruct *bi = &bandInfo[j];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
235 int *mp;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
236 int cb,lwin;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
237 const int *bdf;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
238
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
239 mp = map[j][0] = mapbuf0[j];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
240 bdf = bi->longDiff;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
241 for(i=0,cb = 0; cb < 8 ; cb++,i+=*bdf++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
242 *mp++ = (*bdf) >> 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
243 *mp++ = i;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
244 *mp++ = 3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
245 *mp++ = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
246 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
247 bdf = bi->shortDiff+3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
248 for(cb=3;cb<13;cb++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
249 int l = (*bdf++) >> 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
250 for(lwin=0;lwin<3;lwin++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
251 *mp++ = l;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
252 *mp++ = i + lwin;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
253 *mp++ = lwin;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
254 *mp++ = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
255 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
256 i += 6*l;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
257 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
258 mapend[j][0] = mp;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
259
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
260 mp = map[j][1] = mapbuf1[j];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
261 bdf = bi->shortDiff+0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
262 for(i=0,cb=0;cb<13;cb++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
263 int l = (*bdf++) >> 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
264 for(lwin=0;lwin<3;lwin++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
265 *mp++ = l;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
266 *mp++ = i + lwin;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
267 *mp++ = lwin;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
268 *mp++ = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
269 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
270 i += 6*l;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
271 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
272 mapend[j][1] = mp;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
273
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
274 mp = map[j][2] = mapbuf2[j];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
275 bdf = bi->longDiff;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
276 for(cb = 0; cb < 22 ; cb++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
277 *mp++ = (*bdf++) >> 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
278 *mp++ = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
279 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
280 mapend[j][2] = mp;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
281
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
282 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
283
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
284 for(i=0;i<5;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
285 for(j=0;j<6;j++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
286 for(k=0;k<6;k++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
287 int n = k + j * 6 + i * 36;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
288 i_slen2[n] = i|(j<<3)|(k<<6)|(3<<12);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
289 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
290 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
291 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
292 for(i=0;i<4;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
293 for(j=0;j<4;j++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
294 for(k=0;k<4;k++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
295 int n = k + j * 4 + i * 16;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
296 i_slen2[n+180] = i|(j<<3)|(k<<6)|(4<<12);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
297 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
298 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
299 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
300 for(i=0;i<4;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
301 for(j=0;j<3;j++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
302 int n = j + i * 3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
303 i_slen2[n+244] = i|(j<<3) | (5<<12);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
304 n_slen2[n+500] = i|(j<<3) | (2<<12) | (1<<15);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
305 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
306 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
307
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
308 for(i=0;i<5;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
309 for(j=0;j<5;j++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
310 for(k=0;k<4;k++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
311 for(l=0;l<4;l++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
312 int n = l + k * 4 + j * 16 + i * 80;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
313 n_slen2[n] = i|(j<<3)|(k<<6)|(l<<9)|(0<<12);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
314 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
315 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
316 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
317 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
318 for(i=0;i<5;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
319 for(j=0;j<5;j++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
320 for(k=0;k<4;k++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
321 int n = k + j * 4 + i * 20;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
322 n_slen2[n+400] = i|(j<<3)|(k<<6)|(1<<12);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
323 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
324 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
325 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
326 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
327
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
328 void init_layer3_stuff(mpg123_handle *fr)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
329 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
330 int i,j;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
331
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
332 for(i=-256;i<118+4;i++) fr->gainpow2[i+256] = opt_init_layer3_gainpow2(fr)(fr,i);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
333
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
334 for(j=0;j<9;j++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
335 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
336 for(i=0;i<23;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
337 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
338 fr->longLimit[j][i] = (bandInfo[j].longIdx[i] - 1 + 8) / 18 + 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
339 if(fr->longLimit[j][i] > (fr->down_sample_sblimit) )
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
340 fr->longLimit[j][i] = fr->down_sample_sblimit;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
341 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
342 for(i=0;i<14;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
343 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
344 fr->shortLimit[j][i] = (bandInfo[j].shortIdx[i] - 1) / 18 + 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
345 if(fr->shortLimit[j][i] > (fr->down_sample_sblimit) )
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
346 fr->shortLimit[j][i] = fr->down_sample_sblimit;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
347 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
348 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
349 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
350
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
351
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
352 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
353 * read additional side information (for MPEG 1 and MPEG 2)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
354 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
355 static int III_get_side_info(mpg123_handle *fr, struct III_sideinfo *si,int stereo,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
356 int ms_stereo,long sfreq,int single)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
357 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
358 int ch, gr;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
359 int powdiff = (single == SINGLE_MIX) ? 4 : 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
360
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
361 const int tabs[2][5] = { { 2,9,5,3,4 } , { 1,8,1,2,9 } };
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
362 const int *tab = tabs[fr->lsf];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
363
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
364 si->main_data_begin = getbits(fr, tab[1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
365
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
366 if(si->main_data_begin > fr->bitreservoir)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
367 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
368 if(NOQUIET) error2("missing %d bytes in bit reservoir for frame %li", (int)(si->main_data_begin - fr->bitreservoir), (long)fr->num);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
369
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
370 /* overwrite main_data_begin for the really available bit reservoir */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
371 backbits(fr, tab[1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
372 if(fr->lsf == 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
373 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
374 fr->wordpointer[0] = (unsigned char) (fr->bitreservoir >> 1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
375 fr->wordpointer[1] = (unsigned char) ((fr->bitreservoir & 1) << 7);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
376 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
377 else fr->wordpointer[0] = (unsigned char) fr->bitreservoir;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
378
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
379 /* zero "side-info" data for a silence-frame
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
380 without touching audio data used as bit reservoir for following frame */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
381 memset(fr->wordpointer+2, 0, fr->ssize-2);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
382
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
383 /* reread the new bit reservoir offset */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
384 si->main_data_begin = getbits(fr, tab[1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
385 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
386
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
387 /* Keep track of the available data bytes for the bit reservoir.
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
388 Think: Substract the 2 crc bytes in parser already? */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
389 fr->bitreservoir = fr->bitreservoir + fr->framesize - fr->ssize - (fr->error_protection ? 2 : 0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
390 /* Limit the reservoir to the max for MPEG 1.0 or 2.x . */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
391 if(fr->bitreservoir > (fr->lsf == 0 ? 511 : 255))
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
392 fr->bitreservoir = (fr->lsf == 0 ? 511 : 255);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
393
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
394 if (stereo == 1)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
395 si->private_bits = getbits_fast(fr, tab[2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
396 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
397 si->private_bits = getbits_fast(fr, tab[3]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
398
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
399 if(!fr->lsf) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
400 for (ch=0; ch<stereo; ch++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
401 si->ch[ch].gr[0].scfsi = -1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
402 si->ch[ch].gr[1].scfsi = getbits_fast(fr, 4);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
403 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
404 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
405
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
406 for (gr=0; gr<tab[0]; gr++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
407 for (ch=0; ch<stereo; ch++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
408 register struct gr_info_s *gr_info = &(si->ch[ch].gr[gr]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
409
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
410 gr_info->part2_3_length = getbits(fr, 12);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
411 gr_info->big_values = getbits(fr, 9);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
412 if(gr_info->big_values > 288) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
413 error("big_values too large!");
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
414 gr_info->big_values = 288;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
415 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
416 gr_info->pow2gain = fr->gainpow2+256 - getbits_fast(fr, 8) + powdiff;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
417 if(ms_stereo)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
418 gr_info->pow2gain += 2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
419 gr_info->scalefac_compress = getbits(fr, tab[4]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
420
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
421 if(get1bit(fr)) { /* window switch flag */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
422 int i;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
423 gr_info->block_type = getbits_fast(fr, 2);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
424 gr_info->mixed_block_flag = get1bit(fr);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
425 gr_info->table_select[0] = getbits_fast(fr, 5);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
426 gr_info->table_select[1] = getbits_fast(fr, 5);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
427 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
428 * table_select[2] not needed, because there is no region2,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
429 * but to satisfy some verifications tools we set it either.
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
430 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
431 gr_info->table_select[2] = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
432 for(i=0;i<3;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
433 gr_info->full_gain[i] = gr_info->pow2gain + (getbits_fast(fr, 3)<<3);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
434
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
435 if(gr_info->block_type == 0) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
436 error("Blocktype == 0 and window-switching == 1 not allowed.");
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
437 /* exit(1); */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
438 return 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
439 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
440
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
441 /* region_count/start parameters are implicit in this case. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
442 if( (!fr->lsf || (gr_info->block_type == 2)) && !fr->mpeg25)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
443 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
444 gr_info->region1start = 36>>1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
445 gr_info->region2start = 576>>1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
446 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
447 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
448 if(fr->mpeg25) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
449 int r0c,r1c;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
450 if((gr_info->block_type == 2) && (!gr_info->mixed_block_flag) )
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
451 r0c = 5;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
452 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
453 r0c = 7;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
454 r1c = 20 - r0c;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
455 gr_info->region1start = bandInfo[sfreq].longIdx[r0c+1] >> 1 ;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
456 gr_info->region2start = bandInfo[sfreq].longIdx[r0c+1+r1c+1] >> 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
457 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
458 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
459 gr_info->region1start = 54>>1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
460 gr_info->region2start = 576>>1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
461 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
462 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
463
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
464 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
465 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
466 int i,r0c,r1c;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
467 for (i=0; i<3; i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
468 gr_info->table_select[i] = getbits_fast(fr, 5);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
469 r0c = getbits_fast(fr, 4);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
470 r1c = getbits_fast(fr, 3);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
471 gr_info->region1start = bandInfo[sfreq].longIdx[r0c+1] >> 1 ;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
472 gr_info->region2start = bandInfo[sfreq].longIdx[r0c+1+r1c+1] >> 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
473 if(r0c + r1c + 2 > 22)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
474 gr_info->region2start = 576>>1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
475 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
476 gr_info->region2start = bandInfo[sfreq].longIdx[r0c+1+r1c+1] >> 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
477 gr_info->block_type = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
478 gr_info->mixed_block_flag = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
479 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
480 if(!fr->lsf)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
481 gr_info->preflag = get1bit(fr);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
482 gr_info->scalefac_scale = get1bit(fr);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
483 gr_info->count1table_select = get1bit(fr);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
484 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
485 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
486 return 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
487 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
488
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
489 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
490 * read scalefactors
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
491 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
492 static int III_get_scale_factors_1(mpg123_handle *fr, int *scf,struct gr_info_s *gr_info,int ch,int gr)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
493 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
494 const unsigned char slen[2][16] = {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
495 {0, 0, 0, 0, 3, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4},
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
496 {0, 1, 2, 3, 0, 1, 2, 3, 1, 2, 3, 1, 2, 3, 2, 3}
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
497 };
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
498 int numbits;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
499 int num0 = slen[0][gr_info->scalefac_compress];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
500 int num1 = slen[1][gr_info->scalefac_compress];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
501
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
502 if (gr_info->block_type == 2) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
503 int i=18;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
504 numbits = (num0 + num1) * 18;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
505
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
506 if (gr_info->mixed_block_flag) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
507 for (i=8;i;i--)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
508 *scf++ = getbits_fast(fr, num0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
509 i = 9;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
510 numbits -= num0; /* num0 * 17 + num1 * 18 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
511 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
512
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
513 for (;i;i--)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
514 *scf++ = getbits_fast(fr, num0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
515 for (i = 18; i; i--)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
516 *scf++ = getbits_fast(fr, num1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
517 *scf++ = 0; *scf++ = 0; *scf++ = 0; /* short[13][0..2] = 0 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
518 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
519 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
520 int i;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
521 int scfsi = gr_info->scfsi;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
522
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
523 if(scfsi < 0) { /* scfsi < 0 => granule == 0 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
524 for(i=11;i;i--)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
525 *scf++ = getbits_fast(fr, num0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
526 for(i=10;i;i--)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
527 *scf++ = getbits_fast(fr, num1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
528 numbits = (num0 + num1) * 10 + num0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
529 *scf++ = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
530 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
531 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
532 numbits = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
533 if(!(scfsi & 0x8)) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
534 for (i=0;i<6;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
535 *scf++ = getbits_fast(fr, num0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
536 numbits += num0 * 6;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
537 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
538 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
539 scf += 6;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
540 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
541
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
542 if(!(scfsi & 0x4)) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
543 for (i=0;i<5;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
544 *scf++ = getbits_fast(fr, num0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
545 numbits += num0 * 5;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
546 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
547 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
548 scf += 5;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
549 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
550
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
551 if(!(scfsi & 0x2)) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
552 for(i=0;i<5;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
553 *scf++ = getbits_fast(fr, num1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
554 numbits += num1 * 5;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
555 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
556 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
557 scf += 5;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
558 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
559
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
560 if(!(scfsi & 0x1)) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
561 for (i=0;i<5;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
562 *scf++ = getbits_fast(fr, num1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
563 numbits += num1 * 5;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
564 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
565 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
566 scf += 5;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
567 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
568 *scf++ = 0; /* no l[21] in original sources */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
569 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
570 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
571 return numbits;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
572 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
573
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
574 static int III_get_scale_factors_2(mpg123_handle *fr, int *scf,struct gr_info_s *gr_info,int i_stereo)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
575 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
576 const unsigned char *pnt;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
577 int i,j,n=0,numbits=0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
578 unsigned int slen;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
579
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
580 const unsigned char stab[3][6][4] = {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
581 { { 6, 5, 5,5 } , { 6, 5, 7,3 } , { 11,10,0,0} ,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
582 { 7, 7, 7,0 } , { 6, 6, 6,3 } , { 8, 8,5,0} } ,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
583 { { 9, 9, 9,9 } , { 9, 9,12,6 } , { 18,18,0,0} ,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
584 {12,12,12,0 } , {12, 9, 9,6 } , { 15,12,9,0} } ,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
585 { { 6, 9, 9,9 } , { 6, 9,12,6 } , { 15,18,0,0} ,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
586 { 6,15,12,0 } , { 6,12, 9,6 } , { 6,18,9,0} } };
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
587
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
588 if(i_stereo) /* i_stereo AND second channel -> do_layer3() checks this */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
589 slen = i_slen2[gr_info->scalefac_compress>>1];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
590 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
591 slen = n_slen2[gr_info->scalefac_compress];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
592
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
593 gr_info->preflag = (slen>>15) & 0x1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
594
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
595 n = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
596 if( gr_info->block_type == 2 ) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
597 n++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
598 if(gr_info->mixed_block_flag)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
599 n++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
600 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
601
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
602 pnt = stab[n][(slen>>12)&0x7];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
603
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
604 for(i=0;i<4;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
605 int num = slen & 0x7;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
606 slen >>= 3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
607 if(num) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
608 for(j=0;j<(int)(pnt[i]);j++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
609 *scf++ = getbits_fast(fr, num);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
610 numbits += pnt[i] * num;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
611 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
612 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
613 for(j=0;j<(int)(pnt[i]);j++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
614 *scf++ = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
615 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
616 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
617
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
618 n = (n << 1) + 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
619 for(i=0;i<n;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
620 *scf++ = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
621
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
622 return numbits;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
623 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
624
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
625 static const 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};
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
626 static const 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};
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
627
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
628 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
629 * Dequantize samples (includes huffman decoding)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
630 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
631 /* 24 is enough because tab13 has max. a 19 bit huffvector */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
632 #define BITSHIFT ((sizeof(long)-1)*8)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
633 #define REFRESH_MASK \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
634 while(num < BITSHIFT) { \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
635 mask |= ((unsigned long)getbyte(fr))<<(BITSHIFT-num); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
636 num += 8; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
637 part2remain -= 8; }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
638
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
639 static int III_dequantize_sample(mpg123_handle *fr, real xr[SBLIMIT][SSLIMIT],int *scf,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
640 struct gr_info_s *gr_info,int sfreq,int part2bits)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
641 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
642 int shift = 1 + gr_info->scalefac_scale;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
643 real *xrpnt = (real *) xr;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
644 int l[3],l3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
645 int part2remain = gr_info->part2_3_length - part2bits;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
646 int *me;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
647
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
648 /* mhipp tree has this split up a bit... */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
649 int num=getbitoffset(fr);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
650 long mask;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
651 /* We must split this, because for num==0 the shift is undefined if you do it in one step. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
652 mask = ((unsigned long) getbits(fr, num))<<BITSHIFT;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
653 mask <<= 8-num;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
654 part2remain -= num;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
655
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
656 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
657 int bv = gr_info->big_values;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
658 int region1 = gr_info->region1start;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
659 int region2 = gr_info->region2start;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
660 if(region1 > region2)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
661 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
662 /* That's not optimal: it fixes a segfault with fuzzed data, but also apparently triggers where it shouldn't, see bug 1641196.
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
663 The benefit of not crashing / having this security risk is bigger than these few frames of a lame-3.70 file that aren't audible anyway
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
664 But still, I want to know if indeed this check or the old lame is at fault. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
665 error("You got some really nasty file there... region1>region2!");
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
666 return 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
667 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
668 l3 = ((576>>1)-bv)>>1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
669 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
670 * we may lose the 'odd' bit here !!
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
671 * check this later again
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
672 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
673 if(bv <= region1) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
674 l[0] = bv; l[1] = 0; l[2] = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
675 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
676 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
677 l[0] = region1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
678 if(bv <= region2) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
679 l[1] = bv - l[0]; l[2] = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
680 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
681 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
682 l[1] = region2 - l[0]; l[2] = bv - region2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
683 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
684 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
685 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
686
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
687 if(gr_info->block_type == 2) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
688 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
689 * decoding with short or mixed mode BandIndex table
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
690 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
691 int i,max[4];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
692 int step=0,lwin=3,cb=0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
693 register real v = 0.0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
694 register int *m,mc;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
695
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
696 if(gr_info->mixed_block_flag) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
697 max[3] = -1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
698 max[0] = max[1] = max[2] = 2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
699 m = map[sfreq][0];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
700 me = mapend[sfreq][0];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
701 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
702 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
703 max[0] = max[1] = max[2] = max[3] = -1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
704 /* max[3] not really needed in this case */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
705 m = map[sfreq][1];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
706 me = mapend[sfreq][1];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
707 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
708
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
709 mc = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
710 for(i=0;i<2;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
711 int lp = l[i];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
712 struct newhuff *h = ht+gr_info->table_select[i];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
713 for(;lp;lp--,mc--) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
714 register int x,y;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
715 if( (!mc) ) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
716 mc = *m++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
717 xrpnt = ((real *) xr) + (*m++);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
718 lwin = *m++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
719 cb = *m++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
720 if(lwin == 3) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
721 v = gr_info->pow2gain[(*scf++) << shift];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
722 step = 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
723 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
724 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
725 v = gr_info->full_gain[lwin][(*scf++) << shift];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
726 step = 3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
727 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
728 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
729 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
730 register short *val = h->table;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
731 REFRESH_MASK;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
732 while((y=*val++)<0) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
733 if (mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
734 val -= y;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
735 num--;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
736 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
737 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
738 x = y >> 4;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
739 y &= 0xf;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
740 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
741 if(x == 15 && h->linbits) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
742 max[lwin] = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
743 REFRESH_MASK;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
744 x += ((unsigned long) mask) >> (BITSHIFT+8-h->linbits);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
745 num -= h->linbits+1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
746 mask <<= h->linbits;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
747 if(mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
748 *xrpnt = REAL_MUL(-ispow[x], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
749 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
750 *xrpnt = REAL_MUL(ispow[x], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
751 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
752 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
753 else if(x) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
754 max[lwin] = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
755 if(mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
756 *xrpnt = REAL_MUL(-ispow[x], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
757 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
758 *xrpnt = REAL_MUL(ispow[x], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
759 num--;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
760 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
761 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
762 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
763 *xrpnt = DOUBLE_TO_REAL(0.0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
764 xrpnt += step;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
765 if(y == 15 && h->linbits) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
766 max[lwin] = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
767 REFRESH_MASK;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
768 y += ((unsigned long) mask) >> (BITSHIFT+8-h->linbits);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
769 num -= h->linbits+1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
770 mask <<= h->linbits;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
771 if(mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
772 *xrpnt = REAL_MUL(-ispow[y], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
773 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
774 *xrpnt = REAL_MUL(ispow[y], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
775 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
776 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
777 else if(y) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
778 max[lwin] = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
779 if(mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
780 *xrpnt = REAL_MUL(-ispow[y], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
781 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
782 *xrpnt = REAL_MUL(ispow[y], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
783 num--;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
784 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
785 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
786 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
787 *xrpnt = DOUBLE_TO_REAL(0.0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
788 xrpnt += step;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
789 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
790 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
791
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
792 for(;l3 && (part2remain+num > 0);l3--) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
793 /* not mixing code and declarations to keep C89 happy */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
794 struct newhuff* h;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
795 register short* val;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
796 register short a;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
797 /* This is only a humble hack to prevent a special segfault. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
798 /* More insight into the real workings is still needed. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
799 /* especially why there are (valid?) files that make xrpnt exceed the array with 4 bytes without segfaulting, more seems to be really bad, though. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
800 #ifdef DEBUG
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
801 if(!(xrpnt < &xr[SBLIMIT][0]))
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
802 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
803 if(VERBOSE) debug2("attempted soft xrpnt overflow (%p !< %p) ?", (void*) xrpnt, (void*) &xr[SBLIMIT][0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
804 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
805 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
806 if(!(xrpnt < &xr[SBLIMIT][0]+5))
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
807 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
808 error2("attempted xrpnt overflow (%p !< %p)", (void*) xrpnt, (void*) &xr[SBLIMIT][0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
809 return 2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
810 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
811 h = htc+gr_info->count1table_select;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
812 val = h->table;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
813
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
814 REFRESH_MASK;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
815 while((a=*val++)<0) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
816 if (mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
817 val -= a;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
818 num--;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
819 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
820 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
821 if(part2remain+num <= 0) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
822 num -= part2remain+num;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
823 break;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
824 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
825
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
826 for(i=0;i<4;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
827 if(!(i & 1)) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
828 if(!mc) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
829 mc = *m++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
830 xrpnt = ((real *) xr) + (*m++);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
831 lwin = *m++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
832 cb = *m++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
833 if(lwin == 3) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
834 v = gr_info->pow2gain[(*scf++) << shift];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
835 step = 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
836 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
837 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
838 v = gr_info->full_gain[lwin][(*scf++) << shift];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
839 step = 3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
840 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
841 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
842 mc--;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
843 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
844 if( (a & (0x8>>i)) ) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
845 max[lwin] = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
846 if(part2remain+num <= 0) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
847 break;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
848 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
849 if(mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
850 *xrpnt = -v;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
851 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
852 *xrpnt = v;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
853 num--;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
854 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
855 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
856 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
857 *xrpnt = DOUBLE_TO_REAL(0.0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
858 xrpnt += step;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
859 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
860 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
861
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
862 if(lwin < 3) { /* short band? */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
863 while(1) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
864 for(;mc > 0;mc--) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
865 *xrpnt = DOUBLE_TO_REAL(0.0); xrpnt += 3; /* short band -> step=3 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
866 *xrpnt = DOUBLE_TO_REAL(0.0); xrpnt += 3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
867 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
868 if(m >= me)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
869 break;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
870 mc = *m++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
871 xrpnt = ((real *) xr) + *m++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
872 if(*m++ == 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
873 break; /* optimize: field will be set to zero at the end of the function */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
874 m++; /* cb */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
875 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
876 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
877
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
878 gr_info->maxband[0] = max[0]+1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
879 gr_info->maxband[1] = max[1]+1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
880 gr_info->maxband[2] = max[2]+1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
881 gr_info->maxbandl = max[3]+1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
882
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
883 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
884 int rmax = max[0] > max[1] ? max[0] : max[1];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
885 rmax = (rmax > max[2] ? rmax : max[2]) + 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
886 gr_info->maxb = rmax ? fr->shortLimit[sfreq][rmax] : fr->longLimit[sfreq][max[3]+1];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
887 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
888
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
889 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
890 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
891 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
892 * decoding with 'long' BandIndex table (block_type != 2)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
893 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
894 const int *pretab = gr_info->preflag ? pretab1 : pretab2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
895 int i,max = -1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
896 int cb = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
897 int *m = map[sfreq][2];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
898 register real v = 0.0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
899 int mc = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
900
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
901 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
902 * long hash table values
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
903 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
904 for(i=0;i<3;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
905 int lp = l[i];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
906 struct newhuff *h = ht+gr_info->table_select[i];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
907
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
908 for(;lp;lp--,mc--) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
909 int x,y;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
910 if(!mc) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
911 mc = *m++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
912 cb = *m++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
913 if(cb == 21)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
914 v = 0.0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
915 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
916 v = gr_info->pow2gain[((*scf++) + (*pretab++)) << shift];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
917
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
918 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
919 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
920 register short *val = h->table;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
921 REFRESH_MASK;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
922 while((y=*val++)<0) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
923 if (mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
924 val -= y;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
925 num--;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
926 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
927 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
928 x = y >> 4;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
929 y &= 0xf;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
930 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
931
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
932 if (x == 15 && h->linbits) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
933 max = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
934 REFRESH_MASK;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
935 x += ((unsigned long) mask) >> (BITSHIFT+8-h->linbits);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
936 num -= h->linbits+1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
937 mask <<= h->linbits;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
938 if(mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
939 *xrpnt++ = REAL_MUL(-ispow[x], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
940 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
941 *xrpnt++ = REAL_MUL(ispow[x], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
942 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
943 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
944 else if(x) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
945 max = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
946 if(mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
947 *xrpnt++ = REAL_MUL(-ispow[x], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
948 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
949 *xrpnt++ = REAL_MUL(ispow[x], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
950 num--;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
951 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
952 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
953 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
954 *xrpnt++ = DOUBLE_TO_REAL(0.0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
955
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
956 if (y == 15 && h->linbits) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
957 max = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
958 REFRESH_MASK;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
959 y += ((unsigned long) mask) >> (BITSHIFT+8-h->linbits);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
960 num -= h->linbits+1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
961 mask <<= h->linbits;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
962 if(mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
963 *xrpnt++ = REAL_MUL(-ispow[y], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
964 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
965 *xrpnt++ = REAL_MUL(ispow[y], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
966 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
967 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
968 else if(y) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
969 max = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
970 if(mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
971 *xrpnt++ = REAL_MUL(-ispow[y], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
972 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
973 *xrpnt++ = REAL_MUL(ispow[y], v);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
974 num--;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
975 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
976 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
977 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
978 *xrpnt++ = DOUBLE_TO_REAL(0.0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
979 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
980 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
981
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
982 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
983 * short (count1table) values
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
984 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
985 for(;l3 && (part2remain+num > 0);l3--) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
986 struct newhuff *h = htc+gr_info->count1table_select;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
987 register short *val = h->table,a;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
988
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
989 REFRESH_MASK;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
990 while((a=*val++)<0) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
991 if (mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
992 val -= a;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
993 num--;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
994 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
995 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
996 if(part2remain+num <= 0) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
997 num -= part2remain+num;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
998 break;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
999 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1000
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1001 for(i=0;i<4;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1002 if(!(i & 1)) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1003 if(!mc) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1004 mc = *m++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1005 cb = *m++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1006 if(cb == 21)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1007 v = 0.0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1008 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1009 v = gr_info->pow2gain[((*scf++) + (*pretab++)) << shift];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1010 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1011 mc--;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1012 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1013 if ( (a & (0x8>>i)) ) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1014 max = cb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1015 if(part2remain+num <= 0) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1016 break;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1017 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1018 if(mask < 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1019 *xrpnt++ = -v;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1020 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1021 *xrpnt++ = v;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1022 num--;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1023 mask <<= 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1024 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1025 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1026 *xrpnt++ = DOUBLE_TO_REAL(0.0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1027 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1028 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1029
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1030 gr_info->maxbandl = max+1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1031 gr_info->maxb = fr->longLimit[sfreq][gr_info->maxbandl];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1032 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1033
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1034 part2remain += num;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1035 backbits(fr, num);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1036 num = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1037
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1038 while(xrpnt < &xr[SBLIMIT][0])
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1039 *xrpnt++ = DOUBLE_TO_REAL(0.0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1040
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1041 while( part2remain > 16 ) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1042 skipbits(fr, 16); /* Dismiss stuffing Bits */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1043 part2remain -= 16;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1044 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1045 if(part2remain > 0)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1046 skipbits(fr, part2remain);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1047 else if(part2remain < 0) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1048 debug1("Can't rewind stream by %d bits!",-part2remain);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1049 return 1; /* -> error */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1050 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1051 return 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1052 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1053
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1054 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1055 * III_stereo: calculate real channel values for Joint-I-Stereo-mode
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1056 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1057 static void III_i_stereo(real xr_buf[2][SBLIMIT][SSLIMIT],int *scalefac,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1058 struct gr_info_s *gr_info,int sfreq,int ms_stereo,int lsf)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1059 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1060 real (*xr)[SBLIMIT*SSLIMIT] = (real (*)[SBLIMIT*SSLIMIT] ) xr_buf;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1061 const struct bandInfoStruct *bi = &bandInfo[sfreq];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1062
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1063 const real *tab1,*tab2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1064
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1065 #if 1
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1066 int tab;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1067 /* TODO: optimize as static */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1068 const real *tabs[3][2][2] = {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1069 { { tan1_1,tan2_1 } , { tan1_2,tan2_2 } },
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1070 { { pow1_1[0],pow2_1[0] } , { pow1_2[0],pow2_2[0] } } ,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1071 { { pow1_1[1],pow2_1[1] } , { pow1_2[1],pow2_2[1] } }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1072 };
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1073
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1074 tab = lsf + (gr_info->scalefac_compress & lsf);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1075 tab1 = tabs[tab][ms_stereo][0];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1076 tab2 = tabs[tab][ms_stereo][1];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1077 #else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1078 if(lsf) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1079 int p = gr_info->scalefac_compress & 0x1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1080 if(ms_stereo) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1081 tab1 = pow1_2[p]; tab2 = pow2_2[p];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1082 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1083 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1084 tab1 = pow1_1[p]; tab2 = pow2_1[p];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1085 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1086 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1087 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1088 if(ms_stereo) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1089 tab1 = tan1_2; tab2 = tan2_2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1090 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1091 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1092 tab1 = tan1_1; tab2 = tan2_1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1093 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1094 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1095 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1096
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1097 if (gr_info->block_type == 2) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1098 int lwin,do_l = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1099 if( gr_info->mixed_block_flag )
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1100 do_l = 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1101
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1102 for (lwin=0;lwin<3;lwin++) { /* process each window */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1103 /* get first band with zero values */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1104 int is_p,sb,idx,sfb = gr_info->maxband[lwin]; /* sfb is minimal 3 for mixed mode */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1105 if(sfb > 3)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1106 do_l = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1107
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1108 for(;sfb<12;sfb++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1109 is_p = scalefac[sfb*3+lwin-gr_info->mixed_block_flag]; /* scale: 0-15 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1110 if(is_p != 7) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1111 real t1,t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1112 sb = bi->shortDiff[sfb];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1113 idx = bi->shortIdx[sfb] + lwin;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1114 t1 = tab1[is_p]; t2 = tab2[is_p];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1115 for (; sb > 0; sb--,idx+=3) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1116 real v = xr[0][idx];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1117 xr[0][idx] = REAL_MUL(v, t1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1118 xr[1][idx] = REAL_MUL(v, t2);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1119 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1120 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1121 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1122
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1123 #if 1
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1124 /* in the original: copy 10 to 11 , here: copy 11 to 12
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1125 maybe still wrong??? (copy 12 to 13?) */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1126 is_p = scalefac[11*3+lwin-gr_info->mixed_block_flag]; /* scale: 0-15 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1127 sb = bi->shortDiff[12];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1128 idx = bi->shortIdx[12] + lwin;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1129 #else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1130 is_p = scalefac[10*3+lwin-gr_info->mixed_block_flag]; /* scale: 0-15 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1131 sb = bi->shortDiff[11];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1132 idx = bi->shortIdx[11] + lwin;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1133 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1134 if(is_p != 7) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1135 real t1,t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1136 t1 = tab1[is_p]; t2 = tab2[is_p];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1137 for ( ; sb > 0; sb--,idx+=3 ) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1138 real v = xr[0][idx];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1139 xr[0][idx] = REAL_MUL(v, t1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1140 xr[1][idx] = REAL_MUL(v, t2);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1141 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1142 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1143 } /* end for(lwin; .. ; . ) */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1144
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1145 /* also check l-part, if ALL bands in the three windows are 'empty'
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1146 * and mode = mixed_mode
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1147 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1148 if (do_l) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1149 int sfb = gr_info->maxbandl;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1150 int idx;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1151 if(sfb > 21) return; /* similarity fix related to CVE-2006-1655 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1152 idx = bi->longIdx[sfb];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1153 for ( ; sfb<8; sfb++ ) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1154 int sb = bi->longDiff[sfb];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1155 int is_p = scalefac[sfb]; /* scale: 0-15 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1156 if(is_p != 7) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1157 real t1,t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1158 t1 = tab1[is_p]; t2 = tab2[is_p];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1159 for ( ; sb > 0; sb--,idx++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1160 real v = xr[0][idx];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1161 xr[0][idx] = REAL_MUL(v, t1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1162 xr[1][idx] = REAL_MUL(v, t2);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1163 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1164 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1165 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1166 idx += sb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1167 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1168 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1169 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1170 else { /* ((gr_info->block_type != 2)) */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1171 int sfb = gr_info->maxbandl;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1172 int is_p,idx;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1173 if(sfb > 21) return; /* tightened fix for CVE-2006-1655 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1174 idx = bi->longIdx[sfb];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1175 for ( ; sfb<21; sfb++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1176 int sb = bi->longDiff[sfb];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1177 is_p = scalefac[sfb]; /* scale: 0-15 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1178 if(is_p != 7) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1179 real t1,t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1180 t1 = tab1[is_p]; t2 = tab2[is_p];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1181 for ( ; sb > 0; sb--,idx++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1182 real v = xr[0][idx];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1183 xr[0][idx] = REAL_MUL(v, t1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1184 xr[1][idx] = REAL_MUL(v, t2);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1185 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1186 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1187 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1188 idx += sb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1189 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1190
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1191 is_p = scalefac[20];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1192 if(is_p != 7) { /* copy l-band 20 to l-band 21 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1193 int sb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1194 real t1 = tab1[is_p],t2 = tab2[is_p];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1195
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1196 for ( sb = bi->longDiff[21]; sb > 0; sb--,idx++ ) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1197 real v = xr[0][idx];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1198 xr[0][idx] = REAL_MUL(v, t1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1199 xr[1][idx] = REAL_MUL(v, t2);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1200 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1201 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1202 } /* ... */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1203 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1204
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1205 static void III_antialias(real xr[SBLIMIT][SSLIMIT],struct gr_info_s *gr_info) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1206 int sblim;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1207
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1208 if(gr_info->block_type == 2) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1209 if(!gr_info->mixed_block_flag)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1210 return;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1211 sblim = 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1212 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1213 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1214 sblim = gr_info->maxb-1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1215 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1216
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1217 /* 31 alias-reduction operations between each pair of sub-bands */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1218 /* with 8 butterflies between each pair */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1219
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1220 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1221 int sb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1222 real *xr1=(real *) xr[1];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1223
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1224 for(sb=sblim;sb;sb--,xr1+=10) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1225 int ss;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1226 real *cs=aa_cs,*ca=aa_ca;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1227 real *xr2 = xr1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1228
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1229 for(ss=7;ss>=0;ss--)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1230 { /* upper and lower butterfly inputs */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1231 register real bu = *--xr2,bd = *xr1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1232 *xr2 = REAL_MUL(bu, *cs) - REAL_MUL(bd, *ca);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1233 *xr1++ = REAL_MUL(bd, *cs++) + REAL_MUL(bu, *ca++);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1234 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1235 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1236 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1237 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1238
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1239 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1240 // This is an optimized DCT from Jeff Tsay's maplay 1.2+ package.
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1241 // Saved one multiplication by doing the 'twiddle factor' stuff
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1242 // together with the window mul. (MH)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1243 //
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1244 // This uses Byeong Gi Lee's Fast Cosine Transform algorithm, but the
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1245 // 9 point IDCT needs to be reduced further. Unfortunately, I don't
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1246 // know how to do that, because 9 is not an even number. - Jeff.
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1247 //
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1248 //////////////////////////////////////////////////////////////////
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1249 //
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1250 // 9 Point Inverse Discrete Cosine Transform
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1251 //
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1252 // This piece of code is Copyright 1997 Mikko Tommila and is freely usable
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1253 // by anybody. The algorithm itself is of course in the public domain.
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1254 //
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1255 // Again derived heuristically from the 9-point WFTA.
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1256 //
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1257 // The algorithm is optimized (?) for speed, not for small rounding errors or
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1258 // good readability.
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1259 //
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1260 // 36 additions, 11 multiplications
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1261 //
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1262 // Again this is very likely sub-optimal.
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1263 //
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1264 // The code is optimized to use a minimum number of temporary variables,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1265 // so it should compile quite well even on 8-register Intel x86 processors.
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1266 // This makes the code quite obfuscated and very difficult to understand.
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1267 //
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1268 // References:
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1269 // [1] S. Winograd: "On Computing the Discrete Fourier Transform",
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1270 // Mathematics of Computation, Volume 32, Number 141, January 1978,
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1271 // Pages 175-199
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1272 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1273
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1274 /*------------------------------------------------------------------*/
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1275 /* */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1276 /* Function: Calculation of the inverse MDCT */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1277 /* */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1278 /*------------------------------------------------------------------*/
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1279 /* used to be static without 3dnow - does that really matter? */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1280 void dct36(real *inbuf,real *o1,real *o2,real *wintab,real *tsbuf)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1281 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1282 #ifdef NEW_DCT9
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1283 real tmp[18];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1284 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1285
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1286 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1287 register real *in = inbuf;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1288
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1289 in[17]+=in[16]; in[16]+=in[15]; in[15]+=in[14];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1290 in[14]+=in[13]; in[13]+=in[12]; in[12]+=in[11];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1291 in[11]+=in[10]; in[10]+=in[9]; in[9] +=in[8];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1292 in[8] +=in[7]; in[7] +=in[6]; in[6] +=in[5];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1293 in[5] +=in[4]; in[4] +=in[3]; in[3] +=in[2];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1294 in[2] +=in[1]; in[1] +=in[0];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1295
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1296 in[17]+=in[15]; in[15]+=in[13]; in[13]+=in[11]; in[11]+=in[9];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1297 in[9] +=in[7]; in[7] +=in[5]; in[5] +=in[3]; in[3] +=in[1];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1298
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1299
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1300 #ifdef NEW_DCT9
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1301 #if 1
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1302 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1303 real t3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1304 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1305 real t0, t1, t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1306
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1307 t0 = REAL_MUL(COS6_2, (in[8] + in[16] - in[4]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1308 t1 = REAL_MUL(COS6_2, in[12]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1309
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1310 t3 = in[0];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1311 t2 = t3 - t1 - t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1312 tmp[1] = tmp[7] = t2 - t0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1313 tmp[4] = t2 + t0 + t0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1314 t3 += t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1315
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1316 t2 = REAL_MUL(COS6_1, (in[10] + in[14] - in[2]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1317 tmp[1] -= t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1318 tmp[7] += t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1319 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1320 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1321 real t0, t1, t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1322
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1323 t0 = REAL_MUL(cos9[0], (in[4] + in[8] ));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1324 t1 = REAL_MUL(cos9[1], (in[8] - in[16]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1325 t2 = REAL_MUL(cos9[2], (in[4] + in[16]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1326
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1327 tmp[2] = tmp[6] = t3 - t0 - t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1328 tmp[0] = tmp[8] = t3 + t0 + t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1329 tmp[3] = tmp[5] = t3 - t1 + t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1330 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1331 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1332 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1333 real t1, t2, t3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1334
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1335 t1 = REAL_MUL(cos18[0], (in[2] + in[10]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1336 t2 = REAL_MUL(cos18[1], (in[10] - in[14]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1337 t3 = REAL_MUL(COS6_1, in[6]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1338
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1339 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1340 real t0 = t1 + t2 + t3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1341 tmp[0] += t0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1342 tmp[8] -= t0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1343 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1344
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1345 t2 -= t3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1346 t1 -= t3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1347
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1348 t3 = REAL_MUL(cos18[2], (in[2] + in[14]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1349
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1350 t1 += t3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1351 tmp[3] += t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1352 tmp[5] -= t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1353
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1354 t2 -= t3;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1355 tmp[2] += t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1356 tmp[6] -= t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1357 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1358
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1359 #else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1360 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1361 real t0, t1, t2, t3, t4, t5, t6, t7;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1362
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1363 t1 = REAL_MUL(COS6_2, in[12]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1364 t2 = REAL_MUL(COS6_2, (in[8] + in[16] - in[4]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1365
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1366 t3 = in[0] + t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1367 t4 = in[0] - t1 - t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1368 t5 = t4 - t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1369 tmp[4] = t4 + t2 + t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1370
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1371 t0 = REAL_MUL(cos9[0], (in[4] + in[8]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1372 t1 = REAL_MUL(cos9[1], (in[8] - in[16]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1373
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1374 t2 = REAL_MUL(cos9[2], (in[4] + in[16]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1375
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1376 t6 = t3 - t0 - t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1377 t0 += t3 + t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1378 t3 += t2 - t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1379
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1380 t2 = REAL_MUL(cos18[0], (in[2] + in[10]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1381 t4 = REAL_MUL(cos18[1], (in[10] - in[14]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1382 t7 = REAL_MUL(COS6_1, in[6]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1383
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1384 t1 = t2 + t4 + t7;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1385 tmp[0] = t0 + t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1386 tmp[8] = t0 - t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1387 t1 = REAL_MUL(cos18[2], (in[2] + in[14]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1388 t2 += t1 - t7;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1389
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1390 tmp[3] = t3 + t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1391 t0 = REAL_MUL(COS6_1, (in[10] + in[14] - in[2]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1392 tmp[5] = t3 - t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1393
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1394 t4 -= t1 + t7;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1395
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1396 tmp[1] = t5 - t0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1397 tmp[7] = t5 + t0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1398 tmp[2] = t6 + t4;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1399 tmp[6] = t6 - t4;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1400 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1401 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1402
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1403 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1404 real t0, t1, t2, t3, t4, t5, t6, t7;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1405
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1406 t1 = REAL_MUL(COS6_2, in[13]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1407 t2 = REAL_MUL(COS6_2, (in[9] + in[17] - in[5]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1408
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1409 t3 = in[1] + t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1410 t4 = in[1] - t1 - t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1411 t5 = t4 - t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1412
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1413 t0 = REAL_MUL(cos9[0], (in[5] + in[9]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1414 t1 = REAL_MUL(cos9[1], (in[9] - in[17]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1415
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1416 tmp[13] = REAL_MUL((t4 + t2 + t2), tfcos36[17-13]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1417 t2 = REAL_MUL(cos9[2], (in[5] + in[17]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1418
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1419 t6 = t3 - t0 - t2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1420 t0 += t3 + t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1421 t3 += t2 - t1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1422
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1423 t2 = REAL_MUL(cos18[0], (in[3] + in[11]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1424 t4 = REAL_MUL(cos18[1], (in[11] - in[15]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1425 t7 = REAL_MUL(COS6_1, in[7]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1426
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1427 t1 = t2 + t4 + t7;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1428 tmp[17] = REAL_MUL((t0 + t1), tfcos36[17-17]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1429 tmp[9] = REAL_MUL((t0 - t1), tfcos36[17-9]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1430 t1 = REAL_MUL(cos18[2], (in[3] + in[15]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1431 t2 += t1 - t7;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1432
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1433 tmp[14] = REAL_MUL((t3 + t2), tfcos36[17-14]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1434 t0 = REAL_MUL(COS6_1, (in[11] + in[15] - in[3]));
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1435 tmp[12] = REAL_MUL((t3 - t2), tfcos36[17-12]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1436
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1437 t4 -= t1 + t7;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1438
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1439 tmp[16] = REAL_MUL((t5 - t0), tfcos36[17-16]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1440 tmp[10] = REAL_MUL((t5 + t0), tfcos36[17-10]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1441 tmp[15] = REAL_MUL((t6 + t4), tfcos36[17-15]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1442 tmp[11] = REAL_MUL((t6 - t4), tfcos36[17-11]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1443 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1444
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1445 #define MACRO(v) { \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1446 real tmpval; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1447 tmpval = tmp[(v)] + tmp[17-(v)]; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1448 out2[9+(v)] = REAL_MUL(tmpval, w[27+(v)]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1449 out2[8-(v)] = REAL_MUL(tmpval, w[26-(v)]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1450 tmpval = tmp[(v)] - tmp[17-(v)]; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1451 ts[SBLIMIT*(8-(v))] = out1[8-(v)] + REAL_MUL(tmpval, w[8-(v)]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1452 ts[SBLIMIT*(9+(v))] = out1[9+(v)] + REAL_MUL(tmpval, w[9+(v)]); }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1453
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1454 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1455 register real *out2 = o2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1456 register real *w = wintab;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1457 register real *out1 = o1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1458 register real *ts = tsbuf;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1459
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1460 MACRO(0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1461 MACRO(1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1462 MACRO(2);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1463 MACRO(3);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1464 MACRO(4);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1465 MACRO(5);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1466 MACRO(6);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1467 MACRO(7);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1468 MACRO(8);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1469 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1470
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1471 #else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1472
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1473 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1474
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1475 #define MACRO0(v) { \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1476 real tmp; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1477 out2[9+(v)] = REAL_MUL((tmp = sum0 + sum1), w[27+(v)]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1478 out2[8-(v)] = REAL_MUL(tmp, w[26-(v)]); } \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1479 sum0 -= sum1; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1480 ts[SBLIMIT*(8-(v))] = out1[8-(v)] + REAL_MUL(sum0, w[8-(v)]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1481 ts[SBLIMIT*(9+(v))] = out1[9+(v)] + REAL_MUL(sum0, w[9+(v)]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1482 #define MACRO1(v) { \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1483 real sum0,sum1; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1484 sum0 = tmp1a + tmp2a; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1485 sum1 = REAL_MUL((tmp1b + tmp2b), tfcos36[(v)]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1486 MACRO0(v); }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1487 #define MACRO2(v) { \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1488 real sum0,sum1; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1489 sum0 = tmp2a - tmp1a; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1490 sum1 = REAL_MUL((tmp2b - tmp1b), tfcos36[(v)]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1491 MACRO0(v); }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1492
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1493 register const real *c = COS9;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1494 register real *out2 = o2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1495 register real *w = wintab;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1496 register real *out1 = o1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1497 register real *ts = tsbuf;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1498
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1499 real ta33,ta66,tb33,tb66;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1500
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1501 ta33 = REAL_MUL(in[2*3+0], c[3]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1502 ta66 = REAL_MUL(in[2*6+0], c[6]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1503 tb33 = REAL_MUL(in[2*3+1], c[3]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1504 tb66 = REAL_MUL(in[2*6+1], c[6]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1505
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1506 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1507 real tmp1a,tmp2a,tmp1b,tmp2b;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1508 tmp1a = REAL_MUL(in[2*1+0], c[1]) + ta33 + REAL_MUL(in[2*5+0], c[5]) + REAL_MUL(in[2*7+0], c[7]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1509 tmp1b = REAL_MUL(in[2*1+1], c[1]) + tb33 + REAL_MUL(in[2*5+1], c[5]) + REAL_MUL(in[2*7+1], c[7]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1510 tmp2a = REAL_MUL(in[2*2+0], c[2]) + REAL_MUL(in[2*4+0], c[4]) + ta66 + REAL_MUL(in[2*8+0], c[8]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1511 tmp2b = REAL_MUL(in[2*2+1], c[2]) + REAL_MUL(in[2*4+1], c[4]) + tb66 + REAL_MUL(in[2*8+1], c[8]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1512
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1513 MACRO1(0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1514 MACRO2(8);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1515 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1516
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1517 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1518 real tmp1a,tmp2a,tmp1b,tmp2b;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1519 tmp1a = REAL_MUL(( in[2*1+0] - in[2*5+0] - in[2*7+0] ), c[3]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1520 tmp1b = REAL_MUL(( in[2*1+1] - in[2*5+1] - in[2*7+1] ), c[3]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1521 tmp2a = REAL_MUL(( in[2*2+0] - in[2*4+0] - in[2*8+0] ), c[6]) - in[2*6+0] + in[2*0+0];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1522 tmp2b = REAL_MUL(( in[2*2+1] - in[2*4+1] - in[2*8+1] ), c[6]) - in[2*6+1] + in[2*0+1];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1523
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1524 MACRO1(1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1525 MACRO2(7);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1526 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1527
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1528 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1529 real tmp1a,tmp2a,tmp1b,tmp2b;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1530 tmp1a = REAL_MUL(in[2*1+0], c[5]) - ta33 - REAL_MUL(in[2*5+0], c[7]) + REAL_MUL(in[2*7+0], c[1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1531 tmp1b = REAL_MUL(in[2*1+1], c[5]) - tb33 - REAL_MUL(in[2*5+1], c[7]) + REAL_MUL(in[2*7+1], c[1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1532 tmp2a = - REAL_MUL(in[2*2+0], c[8]) - REAL_MUL(in[2*4+0], c[2]) + ta66 + REAL_MUL(in[2*8+0], c[4]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1533 tmp2b = - REAL_MUL(in[2*2+1], c[8]) - REAL_MUL(in[2*4+1], c[2]) + tb66 + REAL_MUL(in[2*8+1], c[4]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1534
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1535 MACRO1(2);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1536 MACRO2(6);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1537 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1538
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1539 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1540 real tmp1a,tmp2a,tmp1b,tmp2b;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1541 tmp1a = REAL_MUL(in[2*1+0], c[7]) - ta33 + REAL_MUL(in[2*5+0], c[1]) - REAL_MUL(in[2*7+0], c[5]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1542 tmp1b = REAL_MUL(in[2*1+1], c[7]) - tb33 + REAL_MUL(in[2*5+1], c[1]) - REAL_MUL(in[2*7+1], c[5]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1543 tmp2a = - REAL_MUL(in[2*2+0], c[4]) + REAL_MUL(in[2*4+0], c[8]) + ta66 - REAL_MUL(in[2*8+0], c[2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1544 tmp2b = - REAL_MUL(in[2*2+1], c[4]) + REAL_MUL(in[2*4+1], c[8]) + tb66 - REAL_MUL(in[2*8+1], c[2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1545
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1546 MACRO1(3);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1547 MACRO2(5);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1548 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1549
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1550 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1551 real sum0,sum1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1552 sum0 = in[2*0+0] - in[2*2+0] + in[2*4+0] - in[2*6+0] + in[2*8+0];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1553 sum1 = REAL_MUL((in[2*0+1] - in[2*2+1] + in[2*4+1] - in[2*6+1] + in[2*8+1] ), tfcos36[4]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1554 MACRO0(4);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1555 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1556 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1557 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1558
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1559 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1560 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1561
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1562 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1563 * new DCT12
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1564 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1565 static void dct12(real *in,real *rawout1,real *rawout2,register real *wi,register real *ts)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1566 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1567 #define DCT12_PART1 \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1568 in5 = in[5*3]; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1569 in5 += (in4 = in[4*3]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1570 in4 += (in3 = in[3*3]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1571 in3 += (in2 = in[2*3]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1572 in2 += (in1 = in[1*3]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1573 in1 += (in0 = in[0*3]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1574 \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1575 in5 += in3; in3 += in1; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1576 \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1577 in2 = REAL_MUL(in2, COS6_1); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1578 in3 = REAL_MUL(in3, COS6_1); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1579
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1580 #define DCT12_PART2 \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1581 in0 += REAL_MUL(in4, COS6_2); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1582 \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1583 in4 = in0 + in2; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1584 in0 -= in2; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1585 \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1586 in1 += REAL_MUL(in5, COS6_2); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1587 \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1588 in5 = REAL_MUL((in1 + in3), tfcos12[0]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1589 in1 = REAL_MUL((in1 - in3), tfcos12[2]); \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1590 \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1591 in3 = in4 + in5; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1592 in4 -= in5; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1593 \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1594 in2 = in0 + in1; \
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1595 in0 -= in1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1596
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1597
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1598 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1599 real in0,in1,in2,in3,in4,in5;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1600 register real *out1 = rawout1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1601 ts[SBLIMIT*0] = out1[0]; ts[SBLIMIT*1] = out1[1]; ts[SBLIMIT*2] = out1[2];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1602 ts[SBLIMIT*3] = out1[3]; ts[SBLIMIT*4] = out1[4]; ts[SBLIMIT*5] = out1[5];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1603
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1604 DCT12_PART1
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1605
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1606 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1607 real tmp0,tmp1 = (in0 - in4);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1608 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1609 real tmp2 = REAL_MUL((in1 - in5), tfcos12[1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1610 tmp0 = tmp1 + tmp2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1611 tmp1 -= tmp2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1612 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1613 ts[(17-1)*SBLIMIT] = out1[17-1] + REAL_MUL(tmp0, wi[11-1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1614 ts[(12+1)*SBLIMIT] = out1[12+1] + REAL_MUL(tmp0, wi[6+1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1615 ts[(6 +1)*SBLIMIT] = out1[6 +1] + REAL_MUL(tmp1, wi[1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1616 ts[(11-1)*SBLIMIT] = out1[11-1] + REAL_MUL(tmp1, wi[5-1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1617 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1618
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1619 DCT12_PART2
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1620
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1621 ts[(17-0)*SBLIMIT] = out1[17-0] + REAL_MUL(in2, wi[11-0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1622 ts[(12+0)*SBLIMIT] = out1[12+0] + REAL_MUL(in2, wi[6+0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1623 ts[(12+2)*SBLIMIT] = out1[12+2] + REAL_MUL(in3, wi[6+2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1624 ts[(17-2)*SBLIMIT] = out1[17-2] + REAL_MUL(in3, wi[11-2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1625
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1626 ts[(6 +0)*SBLIMIT] = out1[6+0] + REAL_MUL(in0, wi[0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1627 ts[(11-0)*SBLIMIT] = out1[11-0] + REAL_MUL(in0, wi[5-0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1628 ts[(6 +2)*SBLIMIT] = out1[6+2] + REAL_MUL(in4, wi[2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1629 ts[(11-2)*SBLIMIT] = out1[11-2] + REAL_MUL(in4, wi[5-2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1630 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1631
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1632 in++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1633
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1634 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1635 real in0,in1,in2,in3,in4,in5;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1636 register real *out2 = rawout2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1637
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1638 DCT12_PART1
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1639
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1640 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1641 real tmp0,tmp1 = (in0 - in4);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1642 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1643 real tmp2 = REAL_MUL((in1 - in5), tfcos12[1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1644 tmp0 = tmp1 + tmp2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1645 tmp1 -= tmp2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1646 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1647 out2[5-1] = REAL_MUL(tmp0, wi[11-1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1648 out2[0+1] = REAL_MUL(tmp0, wi[6+1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1649 ts[(12+1)*SBLIMIT] += REAL_MUL(tmp1, wi[1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1650 ts[(17-1)*SBLIMIT] += REAL_MUL(tmp1, wi[5-1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1651 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1652
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1653 DCT12_PART2
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1654
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1655 out2[5-0] = REAL_MUL(in2, wi[11-0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1656 out2[0+0] = REAL_MUL(in2, wi[6+0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1657 out2[0+2] = REAL_MUL(in3, wi[6+2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1658 out2[5-2] = REAL_MUL(in3, wi[11-2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1659
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1660 ts[(12+0)*SBLIMIT] += REAL_MUL(in0, wi[0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1661 ts[(17-0)*SBLIMIT] += REAL_MUL(in0, wi[5-0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1662 ts[(12+2)*SBLIMIT] += REAL_MUL(in4, wi[2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1663 ts[(17-2)*SBLIMIT] += REAL_MUL(in4, wi[5-2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1664 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1665
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1666 in++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1667
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1668 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1669 real in0,in1,in2,in3,in4,in5;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1670 register real *out2 = rawout2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1671 out2[12]=out2[13]=out2[14]=out2[15]=out2[16]=out2[17]=0.0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1672
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1673 DCT12_PART1
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1674
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1675 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1676 real tmp0,tmp1 = (in0 - in4);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1677 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1678 real tmp2 = REAL_MUL((in1 - in5), tfcos12[1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1679 tmp0 = tmp1 + tmp2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1680 tmp1 -= tmp2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1681 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1682 out2[11-1] = REAL_MUL(tmp0, wi[11-1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1683 out2[6 +1] = REAL_MUL(tmp0, wi[6+1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1684 out2[0+1] += REAL_MUL(tmp1, wi[1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1685 out2[5-1] += REAL_MUL(tmp1, wi[5-1]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1686 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1687
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1688 DCT12_PART2
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1689
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1690 out2[11-0] = REAL_MUL(in2, wi[11-0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1691 out2[6 +0] = REAL_MUL(in2, wi[6+0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1692 out2[6 +2] = REAL_MUL(in3, wi[6+2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1693 out2[11-2] = REAL_MUL(in3, wi[11-2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1694
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1695 out2[0+0] += REAL_MUL(in0, wi[0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1696 out2[5-0] += REAL_MUL(in0, wi[5-0]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1697 out2[0+2] += REAL_MUL(in4, wi[2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1698 out2[5-2] += REAL_MUL(in4, wi[5-2]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1699 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1700 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1701
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1702 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1703 * III_hybrid
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1704 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1705 static void III_hybrid(real fsIn[SBLIMIT][SSLIMIT], real tsOut[SSLIMIT][SBLIMIT], int ch,struct gr_info_s *gr_info, mpg123_handle *fr)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1706 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1707 real (*block)[2][SBLIMIT*SSLIMIT] = fr->hybrid_block;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1708 int *blc = fr->hybrid_blc;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1709
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1710 real *tspnt = (real *) tsOut;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1711 real *rawout1,*rawout2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1712 int bt,sb = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1713
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1714 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1715 int b = blc[ch];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1716 rawout1=block[b][ch];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1717 b=-b+1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1718 rawout2=block[b][ch];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1719 blc[ch] = b;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1720 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1721
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1722 if(gr_info->mixed_block_flag) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1723 sb = 2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1724 opt_dct36(fr)(fsIn[0],rawout1,rawout2,win[0],tspnt);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1725 opt_dct36(fr)(fsIn[1],rawout1+18,rawout2+18,win1[0],tspnt+1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1726 rawout1 += 36; rawout2 += 36; tspnt += 2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1727 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1728
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1729 bt = gr_info->block_type;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1730 if(bt == 2) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1731 for (; sb<gr_info->maxb; sb+=2,tspnt+=2,rawout1+=36,rawout2+=36) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1732 dct12(fsIn[sb] ,rawout1 ,rawout2 ,win[2] ,tspnt);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1733 dct12(fsIn[sb+1],rawout1+18,rawout2+18,win1[2],tspnt+1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1734 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1735 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1736 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1737 for (; sb<gr_info->maxb; sb+=2,tspnt+=2,rawout1+=36,rawout2+=36) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1738 opt_dct36(fr)(fsIn[sb],rawout1,rawout2,win[bt],tspnt);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1739 opt_dct36(fr)(fsIn[sb+1],rawout1+18,rawout2+18,win1[bt],tspnt+1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1740 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1741 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1742
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1743 for(;sb<SBLIMIT;sb++,tspnt++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1744 int i;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1745 for(i=0;i<SSLIMIT;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1746 tspnt[i*SBLIMIT] = *rawout1++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1747 *rawout2++ = DOUBLE_TO_REAL(0.0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1748 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1749 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1750 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1751
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1752
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1753 /*
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1754 * main layer3 handler
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1755 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1756 int do_layer3(mpg123_handle *fr)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1757 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1758 int gr, ch, ss,clip=0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1759 int scalefacs[2][39]; /* max 39 for short[13][3] mode, mixed: 38, long: 22 */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1760 struct III_sideinfo sideinfo;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1761 int stereo = fr->stereo;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1762 int single = fr->single;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1763 int ms_stereo,i_stereo;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1764 int sfreq = fr->sampling_frequency;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1765 int stereo1,granules;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1766
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1767 if(stereo == 1) { /* stream is mono */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1768 stereo1 = 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1769 single = SINGLE_LEFT;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1770 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1771 else if(single != SINGLE_STEREO) /* stream is stereo, but force to mono */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1772 stereo1 = 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1773 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1774 stereo1 = 2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1775
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1776 if(fr->mode == MPG_MD_JOINT_STEREO) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1777 ms_stereo = (fr->mode_ext & 0x2)>>1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1778 i_stereo = fr->mode_ext & 0x1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1779 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1780 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1781 ms_stereo = i_stereo = 0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1782
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1783 if(fr->lsf) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1784 granules = 1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1785 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1786 else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1787 granules = 2;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1788 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1789 /* quick hack to keep the music playing */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1790 /* after having seen this nasty test file... */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1791 if(III_get_side_info(fr, &sideinfo,stereo,ms_stereo,sfreq,single))
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1792 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1793 error("bad frame - unable to get valid sideinfo");
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1794 return clip;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1795 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1796
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1797 set_pointer(fr,sideinfo.main_data_begin);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1798
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1799 for (gr=0;gr<granules;gr++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1800 ALIGNED(16) real hybridIn[2][SBLIMIT][SSLIMIT];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1801 ALIGNED(16) real hybridOut[2][SSLIMIT][SBLIMIT];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1802
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1803 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1804 struct gr_info_s *gr_info = &(sideinfo.ch[0].gr[gr]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1805 long part2bits;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1806 if(fr->lsf)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1807 part2bits = III_get_scale_factors_2(fr, scalefacs[0],gr_info,0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1808 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1809 part2bits = III_get_scale_factors_1(fr, scalefacs[0],gr_info,0,gr);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1810
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1811 if(III_dequantize_sample(fr, hybridIn[0], scalefacs[0],gr_info,sfreq,part2bits))
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1812 return clip;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1813 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1814
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1815 if(stereo == 2) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1816 struct gr_info_s *gr_info = &(sideinfo.ch[1].gr[gr]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1817 long part2bits;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1818 if(fr->lsf)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1819 part2bits = III_get_scale_factors_2(fr, scalefacs[1],gr_info,i_stereo);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1820 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1821 part2bits = III_get_scale_factors_1(fr, scalefacs[1],gr_info,1,gr);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1822
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1823 if(III_dequantize_sample(fr, hybridIn[1],scalefacs[1],gr_info,sfreq,part2bits))
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1824 return clip;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1825
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1826 if(ms_stereo) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1827 int i;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1828 int maxb = sideinfo.ch[0].gr[gr].maxb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1829 if(sideinfo.ch[1].gr[gr].maxb > maxb)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1830 maxb = sideinfo.ch[1].gr[gr].maxb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1831 for(i=0;i<SSLIMIT*maxb;i++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1832 real tmp0 = ((real *)hybridIn[0])[i];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1833 real tmp1 = ((real *)hybridIn[1])[i];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1834 ((real *)hybridIn[0])[i] = tmp0 + tmp1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1835 ((real *)hybridIn[1])[i] = tmp0 - tmp1;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1836 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1837 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1838
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1839 if(i_stereo)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1840 III_i_stereo(hybridIn,scalefacs[1],gr_info,sfreq,ms_stereo,fr->lsf);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1841
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1842 if(ms_stereo || i_stereo || (single == SINGLE_MIX) ) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1843 if(gr_info->maxb > sideinfo.ch[0].gr[gr].maxb)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1844 sideinfo.ch[0].gr[gr].maxb = gr_info->maxb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1845 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1846 gr_info->maxb = sideinfo.ch[0].gr[gr].maxb;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1847 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1848
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1849 switch(single) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1850 case SINGLE_MIX:
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1851 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1852 register int i;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1853 register real *in0 = (real *) hybridIn[0],*in1 = (real *) hybridIn[1];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1854 for(i=0;i<SSLIMIT*gr_info->maxb;i++,in0++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1855 *in0 = (*in0 + *in1++); /* *0.5 done by pow-scale */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1856 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1857 break;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1858 case SINGLE_RIGHT:
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1859 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1860 register int i;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1861 register real *in0 = (real *) hybridIn[0],*in1 = (real *) hybridIn[1];
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1862 for(i=0;i<SSLIMIT*gr_info->maxb;i++)
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1863 *in0++ = *in1++;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1864 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1865 break;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1866 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1867 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1868
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1869 for(ch=0;ch<stereo1;ch++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1870 struct gr_info_s *gr_info = &(sideinfo.ch[ch].gr[gr]);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1871 III_antialias(hybridIn[ch],gr_info);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1872 III_hybrid(hybridIn[ch], hybridOut[ch], ch,gr_info, fr);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1873 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1874
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1875 #ifdef OPT_I486
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1876 if (fr->synth != opt_synth_1to1(fr) || single != SINGLE_STEREO) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1877 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1878 for(ss=0;ss<SSLIMIT;ss++) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1879 if(single != SINGLE_STEREO) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1880 clip += (fr->synth_mono)(hybridOut[0][ss], fr);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1881 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1882 else
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1883 {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1884 clip += (fr->synth)(hybridOut[0][ss], 0, fr, 0);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1885 clip += (fr->synth)(hybridOut[1][ss], 1, fr, 1);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1886 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1887
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1888 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1889 #ifdef OPT_I486
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1890 } else {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1891 /* Only stereo, 16 bits benefit from the 486 optimization. */
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1892 ss=0;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1893 while (ss < SSLIMIT) {
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1894 int n;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1895 n=(fr->buffer.size - fr->buffer.fill) / (2*2*32);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1896 if (n > (SSLIMIT-ss)) n=SSLIMIT-ss;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1897
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1898 synth_1to1_486(hybridOut[0][ss], 0, fr, n);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1899 synth_1to1_486(hybridOut[1][ss], 1, fr, n);
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1900 ss+=n;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1901 fr->buffer.fill+=(2*2*32)*n;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1902 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1903 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1904 #endif
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1905 }
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1906
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1907 return clip;
7e08477b0fc1 MP3 decoder upgrade work.
Ryan C. Gordon <icculus@icculus.org>
parents:
diff changeset
1908 }