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1 /* |
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2 ** |
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3 ** File: fmopl.c -- software implementation of FM sound generator |
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4 ** |
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5 ** Copyright (C) 1999,2000 Tatsuyuki Satoh , MultiArcadeMachineEmurator development |
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6 ** |
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7 ** Version 0.37a |
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8 ** |
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9 */ |
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10 |
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11 /* |
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12 preliminary : |
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13 Problem : |
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14 note: |
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15 */ |
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16 |
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17 /* This version of fmopl.c is a fork of the MAME one, relicensed under the LGPL. |
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18 * |
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19 * This library is free software; you can redistribute it and/or |
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20 * modify it under the terms of the GNU Lesser General Public |
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21 * License as published by the Free Software Foundation; either |
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22 * version 2.1 of the License, or (at your option) any later version. |
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23 * |
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24 * This library is distributed in the hope that it will be useful, |
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25 * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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27 * Lesser General Public License for more details. |
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28 * |
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29 * You should have received a copy of the GNU Lesser General Public |
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30 * License along with this library; if not, write to the Free Software |
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31 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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32 */ |
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33 |
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34 #define INLINE __inline |
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35 #define HAS_YM3812 1 |
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36 |
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37 #include <stdio.h> |
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38 #include <stdlib.h> |
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39 #include <string.h> |
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40 #include <stdarg.h> |
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41 #include <math.h> |
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42 //#include "driver.h" /* use M.A.M.E. */ |
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43 #include "fmopl.h" |
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44 |
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45 #ifndef PI |
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46 #define PI 3.14159265358979323846 |
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47 #endif |
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48 |
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49 /* -------------------- for debug --------------------- */ |
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50 /* #define OPL_OUTPUT_LOG */ |
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51 #ifdef OPL_OUTPUT_LOG |
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52 static FILE *opl_dbg_fp = NULL; |
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53 static FM_OPL *opl_dbg_opl[16]; |
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54 static int opl_dbg_maxchip,opl_dbg_chip; |
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55 #endif |
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56 |
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57 /* -------------------- preliminary define section --------------------- */ |
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58 /* attack/decay rate time rate */ |
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59 #define OPL_ARRATE 141280 /* RATE 4 = 2826.24ms @ 3.6MHz */ |
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60 #define OPL_DRRATE 1956000 /* RATE 4 = 39280.64ms @ 3.6MHz */ |
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61 |
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62 #define DELTAT_MIXING_LEVEL (1) /* DELTA-T ADPCM MIXING LEVEL */ |
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63 |
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64 #define FREQ_BITS 24 /* frequency turn */ |
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65 |
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66 /* counter bits = 20 , octerve 7 */ |
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67 #define FREQ_RATE (1<<(FREQ_BITS-20)) |
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68 #define TL_BITS (FREQ_BITS+2) |
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69 |
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70 /* final output shift , limit minimum and maximum */ |
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71 #define OPL_OUTSB (TL_BITS+3-16) /* OPL output final shift 16bit */ |
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72 #define OPL_MAXOUT (0x7fff<<OPL_OUTSB) |
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73 #define OPL_MINOUT (-0x8000<<OPL_OUTSB) |
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74 |
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75 /* -------------------- quality selection --------------------- */ |
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76 |
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77 /* sinwave entries */ |
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78 /* used static memory = SIN_ENT * 4 (byte) */ |
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79 #define SIN_ENT 2048 |
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80 |
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81 /* output level entries (envelope,sinwave) */ |
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82 /* envelope counter lower bits */ |
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83 #define ENV_BITS 16 |
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84 /* envelope output entries */ |
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85 #define EG_ENT 4096 |
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86 /* used dynamic memory = EG_ENT*4*4(byte)or EG_ENT*6*4(byte) */ |
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87 /* used static memory = EG_ENT*4 (byte) */ |
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88 |
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89 #define EG_OFF ((2*EG_ENT)<<ENV_BITS) /* OFF */ |
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90 #define EG_DED EG_OFF |
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91 #define EG_DST (EG_ENT<<ENV_BITS) /* DECAY START */ |
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92 #define EG_AED EG_DST |
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93 #define EG_AST 0 /* ATTACK START */ |
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94 |
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95 #define EG_STEP (96.0/EG_ENT) /* OPL is 0.1875 dB step */ |
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96 |
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97 /* LFO table entries */ |
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98 #define VIB_ENT 512 |
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99 #define VIB_SHIFT (32-9) |
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100 #define AMS_ENT 512 |
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101 #define AMS_SHIFT (32-9) |
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102 |
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103 #define VIB_RATE 256 |
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104 |
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105 /* -------------------- local defines , macros --------------------- */ |
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106 |
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107 /* register number to channel number , slot offset */ |
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108 #define SLOT1 0 |
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109 #define SLOT2 1 |
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110 |
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111 /* envelope phase */ |
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112 #define ENV_MOD_RR 0x00 |
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113 #define ENV_MOD_DR 0x01 |
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114 #define ENV_MOD_AR 0x02 |
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115 |
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116 /* -------------------- tables --------------------- */ |
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117 static const int slot_array[32]= |
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118 { |
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119 0, 2, 4, 1, 3, 5,-1,-1, |
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120 6, 8,10, 7, 9,11,-1,-1, |
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121 12,14,16,13,15,17,-1,-1, |
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122 -1,-1,-1,-1,-1,-1,-1,-1 |
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123 }; |
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124 |
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125 /* key scale level */ |
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126 /* table is 3dB/OCT , DV converts this in TL step at 6dB/OCT */ |
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127 #define DV (EG_STEP/2) |
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128 static const UINT32 KSL_TABLE[8*16]= |
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129 { |
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130 /* OCT 0 */ |
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131 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV, |
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132 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV, |
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133 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV, |
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134 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV, |
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135 /* OCT 1 */ |
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136 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV, |
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137 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV, |
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138 0.000/DV, 0.750/DV, 1.125/DV, 1.500/DV, |
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139 1.875/DV, 2.250/DV, 2.625/DV, 3.000/DV, |
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140 /* OCT 2 */ |
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141 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV, |
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142 0.000/DV, 1.125/DV, 1.875/DV, 2.625/DV, |
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143 3.000/DV, 3.750/DV, 4.125/DV, 4.500/DV, |
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144 4.875/DV, 5.250/DV, 5.625/DV, 6.000/DV, |
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145 /* OCT 3 */ |
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146 0.000/DV, 0.000/DV, 0.000/DV, 1.875/DV, |
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147 3.000/DV, 4.125/DV, 4.875/DV, 5.625/DV, |
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148 6.000/DV, 6.750/DV, 7.125/DV, 7.500/DV, |
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149 7.875/DV, 8.250/DV, 8.625/DV, 9.000/DV, |
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150 /* OCT 4 */ |
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151 0.000/DV, 0.000/DV, 3.000/DV, 4.875/DV, |
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152 6.000/DV, 7.125/DV, 7.875/DV, 8.625/DV, |
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153 9.000/DV, 9.750/DV,10.125/DV,10.500/DV, |
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154 10.875/DV,11.250/DV,11.625/DV,12.000/DV, |
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155 /* OCT 5 */ |
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156 0.000/DV, 3.000/DV, 6.000/DV, 7.875/DV, |
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157 9.000/DV,10.125/DV,10.875/DV,11.625/DV, |
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158 12.000/DV,12.750/DV,13.125/DV,13.500/DV, |
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159 13.875/DV,14.250/DV,14.625/DV,15.000/DV, |
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160 /* OCT 6 */ |
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161 0.000/DV, 6.000/DV, 9.000/DV,10.875/DV, |
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162 12.000/DV,13.125/DV,13.875/DV,14.625/DV, |
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163 15.000/DV,15.750/DV,16.125/DV,16.500/DV, |
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164 16.875/DV,17.250/DV,17.625/DV,18.000/DV, |
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165 /* OCT 7 */ |
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166 0.000/DV, 9.000/DV,12.000/DV,13.875/DV, |
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167 15.000/DV,16.125/DV,16.875/DV,17.625/DV, |
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168 18.000/DV,18.750/DV,19.125/DV,19.500/DV, |
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169 19.875/DV,20.250/DV,20.625/DV,21.000/DV |
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170 }; |
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171 #undef DV |
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172 |
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173 /* sustain lebel table (3db per step) */ |
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174 /* 0 - 15: 0, 3, 6, 9,12,15,18,21,24,27,30,33,36,39,42,93 (dB)*/ |
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175 #define SC(db) (db*((3/EG_STEP)*(1<<ENV_BITS)))+EG_DST |
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176 static const INT32 SL_TABLE[16]={ |
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177 SC( 0),SC( 1),SC( 2),SC(3 ),SC(4 ),SC(5 ),SC(6 ),SC( 7), |
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178 SC( 8),SC( 9),SC(10),SC(11),SC(12),SC(13),SC(14),SC(31) |
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179 }; |
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180 #undef SC |
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181 |
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182 #define TL_MAX (EG_ENT*2) /* limit(tl + ksr + envelope) + sinwave */ |
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183 /* TotalLevel : 48 24 12 6 3 1.5 0.75 (dB) */ |
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184 /* TL_TABLE[ 0 to TL_MAX ] : plus section */ |
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185 /* TL_TABLE[ TL_MAX to TL_MAX+TL_MAX-1 ] : minus section */ |
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186 static INT32 *TL_TABLE; |
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187 |
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188 /* pointers to TL_TABLE with sinwave output offset */ |
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189 static INT32 **SIN_TABLE; |
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190 |
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191 /* LFO table */ |
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192 static INT32 *AMS_TABLE; |
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193 static INT32 *VIB_TABLE; |
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194 |
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195 /* envelope output curve table */ |
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196 /* attack + decay + OFF */ |
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197 static INT32 ENV_CURVE[2*EG_ENT+1]; |
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198 |
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199 /* multiple table */ |
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200 #define ML 2 |
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201 static const UINT32 MUL_TABLE[16]= { |
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202 /* 1/2, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15 */ |
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203 0.50*ML, 1.00*ML, 2.00*ML, 3.00*ML, 4.00*ML, 5.00*ML, 6.00*ML, 7.00*ML, |
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204 8.00*ML, 9.00*ML,10.00*ML,10.00*ML,12.00*ML,12.00*ML,15.00*ML,15.00*ML |
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205 }; |
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206 #undef ML |
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207 |
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208 /* dummy attack / decay rate ( when rate == 0 ) */ |
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209 static INT32 RATE_0[16]= |
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210 {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}; |
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211 |
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212 /* -------------------- static state --------------------- */ |
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213 |
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214 /* lock level of common table */ |
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215 static int num_lock = 0; |
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216 |
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217 /* work table */ |
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218 static void *cur_chip = NULL; /* current chip point */ |
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219 /* currenct chip state */ |
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220 /* static OPLSAMPLE *bufL,*bufR; */ |
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221 static OPL_CH *S_CH; |
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222 static OPL_CH *E_CH; |
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223 OPL_SLOT *SLOT7_1,*SLOT7_2,*SLOT8_1,*SLOT8_2; |
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224 |
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225 static INT32 outd[1]; |
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226 static INT32 ams; |
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227 static INT32 vib; |
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228 INT32 *ams_table; |
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229 INT32 *vib_table; |
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230 static INT32 amsIncr; |
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231 static INT32 vibIncr; |
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232 static INT32 feedback2; /* connect for SLOT 2 */ |
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233 |
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234 /* log output level */ |
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235 #define LOG_ERR 3 /* ERROR */ |
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236 #define LOG_WAR 2 /* WARNING */ |
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237 #define LOG_INF 1 /* INFORMATION */ |
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238 |
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239 //#define LOG_LEVEL LOG_INF |
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240 #define LOG_LEVEL LOG_ERR |
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241 |
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242 //#define LOG(n,x) if( (n)>=LOG_LEVEL ) logerror x |
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243 #define LOG(n,x) |
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244 |
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245 /* --------------------- subroutines --------------------- */ |
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246 |
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247 INLINE int Limit( int val, int max, int min ) { |
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248 if ( val > max ) |
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249 val = max; |
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250 else if ( val < min ) |
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251 val = min; |
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252 |
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253 return val; |
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254 } |
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255 |
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256 /* status set and IRQ handling */ |
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257 INLINE void OPL_STATUS_SET(FM_OPL *OPL,int flag) |
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258 { |
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259 /* set status flag */ |
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260 OPL->status |= flag; |
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261 if(!(OPL->status & 0x80)) |
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262 { |
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263 if(OPL->status & OPL->statusmask) |
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264 { /* IRQ on */ |
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265 OPL->status |= 0x80; |
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266 /* callback user interrupt handler (IRQ is OFF to ON) */ |
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267 if(OPL->IRQHandler) (OPL->IRQHandler)(OPL->IRQParam,1); |
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268 } |
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269 } |
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270 } |
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271 |
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272 /* status reset and IRQ handling */ |
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273 INLINE void OPL_STATUS_RESET(FM_OPL *OPL,int flag) |
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274 { |
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275 /* reset status flag */ |
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276 OPL->status &=~flag; |
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277 if((OPL->status & 0x80)) |
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278 { |
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279 if (!(OPL->status & OPL->statusmask) ) |
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280 { |
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281 OPL->status &= 0x7f; |
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282 /* callback user interrupt handler (IRQ is ON to OFF) */ |
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283 if(OPL->IRQHandler) (OPL->IRQHandler)(OPL->IRQParam,0); |
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284 } |
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285 } |
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286 } |
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287 |
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288 /* IRQ mask set */ |
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289 INLINE void OPL_STATUSMASK_SET(FM_OPL *OPL,int flag) |
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290 { |
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291 OPL->statusmask = flag; |
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292 /* IRQ handling check */ |
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293 OPL_STATUS_SET(OPL,0); |
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294 OPL_STATUS_RESET(OPL,0); |
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295 } |
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296 |
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297 /* ----- key on ----- */ |
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298 INLINE void OPL_KEYON(OPL_SLOT *SLOT) |
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299 { |
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300 /* sin wave restart */ |
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301 SLOT->Cnt = 0; |
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302 /* set attack */ |
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303 SLOT->evm = ENV_MOD_AR; |
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304 SLOT->evs = SLOT->evsa; |
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305 SLOT->evc = EG_AST; |
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306 SLOT->eve = EG_AED; |
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307 } |
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308 /* ----- key off ----- */ |
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309 INLINE void OPL_KEYOFF(OPL_SLOT *SLOT) |
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310 { |
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311 if( SLOT->evm > ENV_MOD_RR) |
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312 { |
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313 /* set envelope counter from envleope output */ |
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314 SLOT->evm = ENV_MOD_RR; |
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315 if( !(SLOT->evc&EG_DST) ) |
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316 //SLOT->evc = (ENV_CURVE[SLOT->evc>>ENV_BITS]<<ENV_BITS) + EG_DST; |
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317 SLOT->evc = EG_DST; |
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318 SLOT->eve = EG_DED; |
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319 SLOT->evs = SLOT->evsr; |
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320 } |
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321 } |
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322 |
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323 /* ---------- calcrate Envelope Generator & Phase Generator ---------- */ |
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324 /* return : envelope output */ |
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325 INLINE UINT32 OPL_CALC_SLOT( OPL_SLOT *SLOT ) |
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326 { |
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327 /* calcrate envelope generator */ |
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328 if( (SLOT->evc+=SLOT->evs) >= SLOT->eve ) |
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329 { |
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330 switch( SLOT->evm ){ |
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331 case ENV_MOD_AR: /* ATTACK -> DECAY1 */ |
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332 /* next DR */ |
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333 SLOT->evm = ENV_MOD_DR; |
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334 SLOT->evc = EG_DST; |
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335 SLOT->eve = SLOT->SL; |
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336 SLOT->evs = SLOT->evsd; |
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337 break; |
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338 case ENV_MOD_DR: /* DECAY -> SL or RR */ |
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339 SLOT->evc = SLOT->SL; |
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340 SLOT->eve = EG_DED; |
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341 if(SLOT->eg_typ) |
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342 { |
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343 SLOT->evs = 0; |
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344 } |
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345 else |
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346 { |
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347 SLOT->evm = ENV_MOD_RR; |
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348 SLOT->evs = SLOT->evsr; |
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349 } |
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350 break; |
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351 case ENV_MOD_RR: /* RR -> OFF */ |
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352 SLOT->evc = EG_OFF; |
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353 SLOT->eve = EG_OFF+1; |
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354 SLOT->evs = 0; |
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355 break; |
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356 } |
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357 } |
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358 /* calcrate envelope */ |
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359 return SLOT->TLL+ENV_CURVE[SLOT->evc>>ENV_BITS]+(SLOT->ams ? ams : 0); |
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360 } |
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361 |
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362 /* set algorythm connection */ |
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363 static void set_algorythm( OPL_CH *CH) |
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364 { |
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365 INT32 *carrier = &outd[0]; |
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366 CH->connect1 = CH->CON ? carrier : &feedback2; |
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367 CH->connect2 = carrier; |
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368 } |
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369 |
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370 /* ---------- frequency counter for operater update ---------- */ |
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371 INLINE void CALC_FCSLOT(OPL_CH *CH,OPL_SLOT *SLOT) |
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372 { |
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373 int ksr; |
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374 |
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375 /* frequency step counter */ |
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376 SLOT->Incr = CH->fc * SLOT->mul; |
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377 ksr = CH->kcode >> SLOT->KSR; |
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378 |
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379 if( SLOT->ksr != ksr ) |
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380 { |
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381 SLOT->ksr = ksr; |
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382 /* attack , decay rate recalcration */ |
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383 SLOT->evsa = SLOT->AR[ksr]; |
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384 SLOT->evsd = SLOT->DR[ksr]; |
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385 SLOT->evsr = SLOT->RR[ksr]; |
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386 } |
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387 SLOT->TLL = SLOT->TL + (CH->ksl_base>>SLOT->ksl); |
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388 } |
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389 |
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390 /* set multi,am,vib,EG-TYP,KSR,mul */ |
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391 INLINE void set_mul(FM_OPL *OPL,int slot,int v) |
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392 { |
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393 OPL_CH *CH = &OPL->P_CH[slot/2]; |
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394 OPL_SLOT *SLOT = &CH->SLOT[slot&1]; |
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395 |
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396 SLOT->mul = MUL_TABLE[v&0x0f]; |
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397 SLOT->KSR = (v&0x10) ? 0 : 2; |
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398 SLOT->eg_typ = (v&0x20)>>5; |
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399 SLOT->vib = (v&0x40); |
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400 SLOT->ams = (v&0x80); |
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401 CALC_FCSLOT(CH,SLOT); |
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402 } |
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403 |
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404 /* set ksl & tl */ |
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405 INLINE void set_ksl_tl(FM_OPL *OPL,int slot,int v) |
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406 { |
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407 OPL_CH *CH = &OPL->P_CH[slot/2]; |
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408 OPL_SLOT *SLOT = &CH->SLOT[slot&1]; |
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409 int ksl = v>>6; /* 0 / 1.5 / 3 / 6 db/OCT */ |
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410 |
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411 SLOT->ksl = ksl ? 3-ksl : 31; |
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412 SLOT->TL = (v&0x3f)*(0.75/EG_STEP); /* 0.75db step */ |
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413 |
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414 if( !(OPL->mode&0x80) ) |
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415 { /* not CSM latch total level */ |
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416 SLOT->TLL = SLOT->TL + (CH->ksl_base>>SLOT->ksl); |
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417 } |
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418 } |
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419 |
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420 /* set attack rate & decay rate */ |
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421 INLINE void set_ar_dr(FM_OPL *OPL,int slot,int v) |
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422 { |
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423 OPL_CH *CH = &OPL->P_CH[slot/2]; |
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424 OPL_SLOT *SLOT = &CH->SLOT[slot&1]; |
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425 int ar = v>>4; |
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426 int dr = v&0x0f; |
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427 |
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428 SLOT->AR = ar ? &OPL->AR_TABLE[ar<<2] : RATE_0; |
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429 SLOT->evsa = SLOT->AR[SLOT->ksr]; |
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430 if( SLOT->evm == ENV_MOD_AR ) SLOT->evs = SLOT->evsa; |
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431 |
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432 SLOT->DR = dr ? &OPL->DR_TABLE[dr<<2] : RATE_0; |
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433 SLOT->evsd = SLOT->DR[SLOT->ksr]; |
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434 if( SLOT->evm == ENV_MOD_DR ) SLOT->evs = SLOT->evsd; |
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435 } |
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436 |
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437 /* set sustain level & release rate */ |
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438 INLINE void set_sl_rr(FM_OPL *OPL,int slot,int v) |
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439 { |
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440 OPL_CH *CH = &OPL->P_CH[slot/2]; |
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441 OPL_SLOT *SLOT = &CH->SLOT[slot&1]; |
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442 int sl = v>>4; |
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443 int rr = v & 0x0f; |
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444 |
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445 SLOT->SL = SL_TABLE[sl]; |
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446 if( SLOT->evm == ENV_MOD_DR ) SLOT->eve = SLOT->SL; |
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447 SLOT->RR = &OPL->DR_TABLE[rr<<2]; |
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448 SLOT->evsr = SLOT->RR[SLOT->ksr]; |
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449 if( SLOT->evm == ENV_MOD_RR ) SLOT->evs = SLOT->evsr; |
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450 } |
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451 |
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452 /* operator output calcrator */ |
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453 #define OP_OUT(slot,env,con) slot->wavetable[((slot->Cnt+con)/(0x1000000/SIN_ENT))&(SIN_ENT-1)][env] |
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454 /* ---------- calcrate one of channel ---------- */ |
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455 INLINE void OPL_CALC_CH( OPL_CH *CH ) |
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456 { |
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457 UINT32 env_out; |
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458 OPL_SLOT *SLOT; |
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459 |
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460 feedback2 = 0; |
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461 /* SLOT 1 */ |
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462 SLOT = &CH->SLOT[SLOT1]; |
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463 env_out=OPL_CALC_SLOT(SLOT); |
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464 if( env_out < EG_ENT-1 ) |
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465 { |
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466 /* PG */ |
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467 if(SLOT->vib) SLOT->Cnt += (SLOT->Incr*vib/VIB_RATE); |
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468 else SLOT->Cnt += SLOT->Incr; |
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469 /* connectoion */ |
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470 if(CH->FB) |
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471 { |
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472 int feedback1 = (CH->op1_out[0]+CH->op1_out[1])>>CH->FB; |
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473 CH->op1_out[1] = CH->op1_out[0]; |
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474 *CH->connect1 += CH->op1_out[0] = OP_OUT(SLOT,env_out,feedback1); |
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475 } |
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476 else |
|
477 { |
|
478 *CH->connect1 += OP_OUT(SLOT,env_out,0); |
|
479 } |
|
480 }else |
|
481 { |
|
482 CH->op1_out[1] = CH->op1_out[0]; |
|
483 CH->op1_out[0] = 0; |
|
484 } |
|
485 /* SLOT 2 */ |
|
486 SLOT = &CH->SLOT[SLOT2]; |
|
487 env_out=OPL_CALC_SLOT(SLOT); |
|
488 if( env_out < EG_ENT-1 ) |
|
489 { |
|
490 /* PG */ |
|
491 if(SLOT->vib) SLOT->Cnt += (SLOT->Incr*vib/VIB_RATE); |
|
492 else SLOT->Cnt += SLOT->Incr; |
|
493 /* connectoion */ |
|
494 outd[0] += OP_OUT(SLOT,env_out, feedback2); |
|
495 } |
|
496 } |
|
497 |
|
498 /* ---------- calcrate rythm block ---------- */ |
|
499 #define WHITE_NOISE_db 6.0 |
|
500 INLINE void OPL_CALC_RH( OPL_CH *CH ) |
|
501 { |
|
502 UINT32 env_tam,env_sd,env_top,env_hh; |
|
503 int whitenoise = (rand()&1)*(WHITE_NOISE_db/EG_STEP); |
|
504 INT32 tone8; |
|
505 |
|
506 OPL_SLOT *SLOT; |
|
507 int env_out; |
|
508 |
|
509 /* BD : same as FM serial mode and output level is large */ |
|
510 feedback2 = 0; |
|
511 /* SLOT 1 */ |
|
512 SLOT = &CH[6].SLOT[SLOT1]; |
|
513 env_out=OPL_CALC_SLOT(SLOT); |
|
514 if( env_out < EG_ENT-1 ) |
|
515 { |
|
516 /* PG */ |
|
517 if(SLOT->vib) SLOT->Cnt += (SLOT->Incr*vib/VIB_RATE); |
|
518 else SLOT->Cnt += SLOT->Incr; |
|
519 /* connectoion */ |
|
520 if(CH[6].FB) |
|
521 { |
|
522 int feedback1 = (CH[6].op1_out[0]+CH[6].op1_out[1])>>CH[6].FB; |
|
523 CH[6].op1_out[1] = CH[6].op1_out[0]; |
|
524 feedback2 = CH[6].op1_out[0] = OP_OUT(SLOT,env_out,feedback1); |
|
525 } |
|
526 else |
|
527 { |
|
528 feedback2 = OP_OUT(SLOT,env_out,0); |
|
529 } |
|
530 }else |
|
531 { |
|
532 feedback2 = 0; |
|
533 CH[6].op1_out[1] = CH[6].op1_out[0]; |
|
534 CH[6].op1_out[0] = 0; |
|
535 } |
|
536 /* SLOT 2 */ |
|
537 SLOT = &CH[6].SLOT[SLOT2]; |
|
538 env_out=OPL_CALC_SLOT(SLOT); |
|
539 if( env_out < EG_ENT-1 ) |
|
540 { |
|
541 /* PG */ |
|
542 if(SLOT->vib) SLOT->Cnt += (SLOT->Incr*vib/VIB_RATE); |
|
543 else SLOT->Cnt += SLOT->Incr; |
|
544 /* connectoion */ |
|
545 outd[0] += OP_OUT(SLOT,env_out, feedback2)*2; |
|
546 } |
|
547 |
|
548 // SD (17) = mul14[fnum7] + white noise |
|
549 // TAM (15) = mul15[fnum8] |
|
550 // TOP (18) = fnum6(mul18[fnum8]+whitenoise) |
|
551 // HH (14) = fnum7(mul18[fnum8]+whitenoise) + white noise |
|
552 env_sd =OPL_CALC_SLOT(SLOT7_2) + whitenoise; |
|
553 env_tam=OPL_CALC_SLOT(SLOT8_1); |
|
554 env_top=OPL_CALC_SLOT(SLOT8_2); |
|
555 env_hh =OPL_CALC_SLOT(SLOT7_1) + whitenoise; |
|
556 |
|
557 /* PG */ |
|
558 if(SLOT7_1->vib) SLOT7_1->Cnt += (2*SLOT7_1->Incr*vib/VIB_RATE); |
|
559 else SLOT7_1->Cnt += 2*SLOT7_1->Incr; |
|
560 if(SLOT7_2->vib) SLOT7_2->Cnt += ((CH[7].fc*8)*vib/VIB_RATE); |
|
561 else SLOT7_2->Cnt += (CH[7].fc*8); |
|
562 if(SLOT8_1->vib) SLOT8_1->Cnt += (SLOT8_1->Incr*vib/VIB_RATE); |
|
563 else SLOT8_1->Cnt += SLOT8_1->Incr; |
|
564 if(SLOT8_2->vib) SLOT8_2->Cnt += ((CH[8].fc*48)*vib/VIB_RATE); |
|
565 else SLOT8_2->Cnt += (CH[8].fc*48); |
|
566 |
|
567 tone8 = OP_OUT(SLOT8_2,whitenoise,0 ); |
|
568 |
|
569 /* SD */ |
|
570 if( env_sd < EG_ENT-1 ) |
|
571 outd[0] += OP_OUT(SLOT7_1,env_sd, 0)*8; |
|
572 /* TAM */ |
|
573 if( env_tam < EG_ENT-1 ) |
|
574 outd[0] += OP_OUT(SLOT8_1,env_tam, 0)*2; |
|
575 /* TOP-CY */ |
|
576 if( env_top < EG_ENT-1 ) |
|
577 outd[0] += OP_OUT(SLOT7_2,env_top,tone8)*2; |
|
578 /* HH */ |
|
579 if( env_hh < EG_ENT-1 ) |
|
580 outd[0] += OP_OUT(SLOT7_2,env_hh,tone8)*2; |
|
581 } |
|
582 |
|
583 /* ----------- initialize time tabls ----------- */ |
|
584 static void init_timetables( FM_OPL *OPL , int ARRATE , int DRRATE ) |
|
585 { |
|
586 int i; |
|
587 double rate; |
|
588 |
|
589 /* make attack rate & decay rate tables */ |
|
590 for (i = 0;i < 4;i++) OPL->AR_TABLE[i] = OPL->DR_TABLE[i] = 0; |
|
591 for (i = 4;i <= 60;i++){ |
|
592 rate = OPL->freqbase; /* frequency rate */ |
|
593 if( i < 60 ) rate *= 1.0+(i&3)*0.25; /* b0-1 : x1 , x1.25 , x1.5 , x1.75 */ |
|
594 rate *= 1<<((i>>2)-1); /* b2-5 : shift bit */ |
|
595 rate *= (double)(EG_ENT<<ENV_BITS); |
|
596 OPL->AR_TABLE[i] = rate / ARRATE; |
|
597 OPL->DR_TABLE[i] = rate / DRRATE; |
|
598 } |
|
599 for (i = 60;i < 76;i++) |
|
600 { |
|
601 OPL->AR_TABLE[i] = EG_AED-1; |
|
602 OPL->DR_TABLE[i] = OPL->DR_TABLE[60]; |
|
603 } |
|
604 #if 0 |
|
605 for (i = 0;i < 64 ;i++){ /* make for overflow area */ |
|
606 LOG(LOG_WAR,("rate %2d , ar %f ms , dr %f ms \n",i, |
|
607 ((double)(EG_ENT<<ENV_BITS) / OPL->AR_TABLE[i]) * (1000.0 / OPL->rate), |
|
608 ((double)(EG_ENT<<ENV_BITS) / OPL->DR_TABLE[i]) * (1000.0 / OPL->rate) )); |
|
609 } |
|
610 #endif |
|
611 } |
|
612 |
|
613 /* ---------- generic table initialize ---------- */ |
|
614 static int OPLOpenTable( void ) |
|
615 { |
|
616 int s,t; |
|
617 double rate; |
|
618 int i,j; |
|
619 double pom; |
|
620 |
|
621 /* allocate dynamic tables */ |
|
622 if( (TL_TABLE = malloc(TL_MAX*2*sizeof(INT32))) == NULL) |
|
623 return 0; |
|
624 if( (SIN_TABLE = malloc(SIN_ENT*4 *sizeof(INT32 *))) == NULL) |
|
625 { |
|
626 free(TL_TABLE); |
|
627 return 0; |
|
628 } |
|
629 if( (AMS_TABLE = malloc(AMS_ENT*2 *sizeof(INT32))) == NULL) |
|
630 { |
|
631 free(TL_TABLE); |
|
632 free(SIN_TABLE); |
|
633 return 0; |
|
634 } |
|
635 if( (VIB_TABLE = malloc(VIB_ENT*2 *sizeof(INT32))) == NULL) |
|
636 { |
|
637 free(TL_TABLE); |
|
638 free(SIN_TABLE); |
|
639 free(AMS_TABLE); |
|
640 return 0; |
|
641 } |
|
642 /* make total level table */ |
|
643 for (t = 0;t < EG_ENT-1 ;t++){ |
|
644 rate = ((1<<TL_BITS)-1)/pow(10,EG_STEP*t/20); /* dB -> voltage */ |
|
645 TL_TABLE[ t] = (int)rate; |
|
646 TL_TABLE[TL_MAX+t] = -TL_TABLE[t]; |
|
647 /* LOG(LOG_INF,("TotalLevel(%3d) = %x\n",t,TL_TABLE[t]));*/ |
|
648 } |
|
649 /* fill volume off area */ |
|
650 for ( t = EG_ENT-1; t < TL_MAX ;t++){ |
|
651 TL_TABLE[t] = TL_TABLE[TL_MAX+t] = 0; |
|
652 } |
|
653 |
|
654 /* make sinwave table (total level offet) */ |
|
655 /* degree 0 = degree 180 = off */ |
|
656 SIN_TABLE[0] = SIN_TABLE[SIN_ENT/2] = &TL_TABLE[EG_ENT-1]; |
|
657 for (s = 1;s <= SIN_ENT/4;s++){ |
|
658 pom = sin(2*PI*s/SIN_ENT); /* sin */ |
|
659 pom = 20*log10(1/pom); /* decibel */ |
|
660 j = pom / EG_STEP; /* TL_TABLE steps */ |
|
661 |
|
662 /* degree 0 - 90 , degree 180 - 90 : plus section */ |
|
663 SIN_TABLE[ s] = SIN_TABLE[SIN_ENT/2-s] = &TL_TABLE[j]; |
|
664 /* degree 180 - 270 , degree 360 - 270 : minus section */ |
|
665 SIN_TABLE[SIN_ENT/2+s] = SIN_TABLE[SIN_ENT -s] = &TL_TABLE[TL_MAX+j]; |
|
666 /* LOG(LOG_INF,("sin(%3d) = %f:%f db\n",s,pom,(double)j * EG_STEP));*/ |
|
667 } |
|
668 for (s = 0;s < SIN_ENT;s++) |
|
669 { |
|
670 SIN_TABLE[SIN_ENT*1+s] = s<(SIN_ENT/2) ? SIN_TABLE[s] : &TL_TABLE[EG_ENT]; |
|
671 SIN_TABLE[SIN_ENT*2+s] = SIN_TABLE[s % (SIN_ENT/2)]; |
|
672 SIN_TABLE[SIN_ENT*3+s] = (s/(SIN_ENT/4))&1 ? &TL_TABLE[EG_ENT] : SIN_TABLE[SIN_ENT*2+s]; |
|
673 } |
|
674 |
|
675 /* envelope counter -> envelope output table */ |
|
676 for (i=0; i<EG_ENT; i++) |
|
677 { |
|
678 /* ATTACK curve */ |
|
679 pom = pow( ((double)(EG_ENT-1-i)/EG_ENT) , 8 ) * EG_ENT; |
|
680 /* if( pom >= EG_ENT ) pom = EG_ENT-1; */ |
|
681 ENV_CURVE[i] = (int)pom; |
|
682 /* DECAY ,RELEASE curve */ |
|
683 ENV_CURVE[(EG_DST>>ENV_BITS)+i]= i; |
|
684 } |
|
685 /* off */ |
|
686 ENV_CURVE[EG_OFF>>ENV_BITS]= EG_ENT-1; |
|
687 /* make LFO ams table */ |
|
688 for (i=0; i<AMS_ENT; i++) |
|
689 { |
|
690 pom = (1.0+sin(2*PI*i/AMS_ENT))/2; /* sin */ |
|
691 AMS_TABLE[i] = (1.0/EG_STEP)*pom; /* 1dB */ |
|
692 AMS_TABLE[AMS_ENT+i] = (4.8/EG_STEP)*pom; /* 4.8dB */ |
|
693 } |
|
694 /* make LFO vibrate table */ |
|
695 for (i=0; i<VIB_ENT; i++) |
|
696 { |
|
697 /* 100cent = 1seminote = 6% ?? */ |
|
698 pom = (double)VIB_RATE*0.06*sin(2*PI*i/VIB_ENT); /* +-100sect step */ |
|
699 VIB_TABLE[i] = VIB_RATE + (pom*0.07); /* +- 7cent */ |
|
700 VIB_TABLE[VIB_ENT+i] = VIB_RATE + (pom*0.14); /* +-14cent */ |
|
701 /* LOG(LOG_INF,("vib %d=%d\n",i,VIB_TABLE[VIB_ENT+i])); */ |
|
702 } |
|
703 return 1; |
|
704 } |
|
705 |
|
706 |
|
707 static void OPLCloseTable( void ) |
|
708 { |
|
709 free(TL_TABLE); |
|
710 free(SIN_TABLE); |
|
711 free(AMS_TABLE); |
|
712 free(VIB_TABLE); |
|
713 } |
|
714 |
|
715 /* CSM Key Controll */ |
|
716 INLINE void CSMKeyControll(OPL_CH *CH) |
|
717 { |
|
718 OPL_SLOT *slot1 = &CH->SLOT[SLOT1]; |
|
719 OPL_SLOT *slot2 = &CH->SLOT[SLOT2]; |
|
720 /* all key off */ |
|
721 OPL_KEYOFF(slot1); |
|
722 OPL_KEYOFF(slot2); |
|
723 /* total level latch */ |
|
724 slot1->TLL = slot1->TL + (CH->ksl_base>>slot1->ksl); |
|
725 slot1->TLL = slot1->TL + (CH->ksl_base>>slot1->ksl); |
|
726 /* key on */ |
|
727 CH->op1_out[0] = CH->op1_out[1] = 0; |
|
728 OPL_KEYON(slot1); |
|
729 OPL_KEYON(slot2); |
|
730 } |
|
731 |
|
732 /* ---------- opl initialize ---------- */ |
|
733 static void OPL_initalize(FM_OPL *OPL) |
|
734 { |
|
735 int fn; |
|
736 |
|
737 /* frequency base */ |
|
738 OPL->freqbase = (OPL->rate) ? ((double)OPL->clock / OPL->rate) / 72 : 0; |
|
739 /* Timer base time */ |
|
740 OPL->TimerBase = 1.0/((double)OPL->clock / 72.0 ); |
|
741 /* make time tables */ |
|
742 init_timetables( OPL , OPL_ARRATE , OPL_DRRATE ); |
|
743 /* make fnumber -> increment counter table */ |
|
744 for( fn=0 ; fn < 1024 ; fn++ ) |
|
745 { |
|
746 OPL->FN_TABLE[fn] = OPL->freqbase * fn * FREQ_RATE * (1<<7) / 2; |
|
747 } |
|
748 /* LFO freq.table */ |
|
749 OPL->amsIncr = OPL->rate ? (double)AMS_ENT*(1<<AMS_SHIFT) / OPL->rate * 3.7 * ((double)OPL->clock/3600000) : 0; |
|
750 OPL->vibIncr = OPL->rate ? (double)VIB_ENT*(1<<VIB_SHIFT) / OPL->rate * 6.4 * ((double)OPL->clock/3600000) : 0; |
|
751 } |
|
752 |
|
753 /* ---------- write a OPL registers ---------- */ |
|
754 static void OPLWriteReg(FM_OPL *OPL, int r, int v) |
|
755 { |
|
756 OPL_CH *CH; |
|
757 int slot; |
|
758 int block_fnum; |
|
759 |
|
760 switch(r&0xe0) |
|
761 { |
|
762 case 0x00: /* 00-1f:controll */ |
|
763 switch(r&0x1f) |
|
764 { |
|
765 case 0x01: |
|
766 /* wave selector enable */ |
|
767 if(OPL->type&OPL_TYPE_WAVESEL) |
|
768 { |
|
769 OPL->wavesel = v&0x20; |
|
770 if(!OPL->wavesel) |
|
771 { |
|
772 /* preset compatible mode */ |
|
773 int c; |
|
774 for(c=0;c<OPL->max_ch;c++) |
|
775 { |
|
776 OPL->P_CH[c].SLOT[SLOT1].wavetable = &SIN_TABLE[0]; |
|
777 OPL->P_CH[c].SLOT[SLOT2].wavetable = &SIN_TABLE[0]; |
|
778 } |
|
779 } |
|
780 } |
|
781 return; |
|
782 case 0x02: /* Timer 1 */ |
|
783 OPL->T[0] = (256-v)*4; |
|
784 break; |
|
785 case 0x03: /* Timer 2 */ |
|
786 OPL->T[1] = (256-v)*16; |
|
787 return; |
|
788 case 0x04: /* IRQ clear / mask and Timer enable */ |
|
789 if(v&0x80) |
|
790 { /* IRQ flag clear */ |
|
791 OPL_STATUS_RESET(OPL,0x7f); |
|
792 } |
|
793 else |
|
794 { /* set IRQ mask ,timer enable*/ |
|
795 UINT8 st1 = v&1; |
|
796 UINT8 st2 = (v>>1)&1; |
|
797 /* IRQRST,T1MSK,t2MSK,EOSMSK,BRMSK,x,ST2,ST1 */ |
|
798 OPL_STATUS_RESET(OPL,v&0x78); |
|
799 OPL_STATUSMASK_SET(OPL,((~v)&0x78)|0x01); |
|
800 /* timer 2 */ |
|
801 if(OPL->st[1] != st2) |
|
802 { |
|
803 double interval = st2 ? (double)OPL->T[1]*OPL->TimerBase : 0.0; |
|
804 OPL->st[1] = st2; |
|
805 if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+1,interval); |
|
806 } |
|
807 /* timer 1 */ |
|
808 if(OPL->st[0] != st1) |
|
809 { |
|
810 double interval = st1 ? (double)OPL->T[0]*OPL->TimerBase : 0.0; |
|
811 OPL->st[0] = st1; |
|
812 if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+0,interval); |
|
813 } |
|
814 } |
|
815 return; |
|
816 #if BUILD_Y8950 |
|
817 case 0x06: /* Key Board OUT */ |
|
818 if(OPL->type&OPL_TYPE_KEYBOARD) |
|
819 { |
|
820 if(OPL->keyboardhandler_w) |
|
821 OPL->keyboardhandler_w(OPL->keyboard_param,v); |
|
822 else |
|
823 LOG(LOG_WAR,("OPL:write unmapped KEYBOARD port\n")); |
|
824 } |
|
825 return; |
|
826 case 0x07: /* DELTA-T controll : START,REC,MEMDATA,REPT,SPOFF,x,x,RST */ |
|
827 if(OPL->type&OPL_TYPE_ADPCM) |
|
828 YM_DELTAT_ADPCM_Write(OPL->deltat,r-0x07,v); |
|
829 return; |
|
830 case 0x08: /* MODE,DELTA-T : CSM,NOTESEL,x,x,smpl,da/ad,64k,rom */ |
|
831 OPL->mode = v; |
|
832 v&=0x1f; /* for DELTA-T unit */ |
|
833 case 0x09: /* START ADD */ |
|
834 case 0x0a: |
|
835 case 0x0b: /* STOP ADD */ |
|
836 case 0x0c: |
|
837 case 0x0d: /* PRESCALE */ |
|
838 case 0x0e: |
|
839 case 0x0f: /* ADPCM data */ |
|
840 case 0x10: /* DELTA-N */ |
|
841 case 0x11: /* DELTA-N */ |
|
842 case 0x12: /* EG-CTRL */ |
|
843 if(OPL->type&OPL_TYPE_ADPCM) |
|
844 YM_DELTAT_ADPCM_Write(OPL->deltat,r-0x07,v); |
|
845 return; |
|
846 #if 0 |
|
847 case 0x15: /* DAC data */ |
|
848 case 0x16: |
|
849 case 0x17: /* SHIFT */ |
|
850 return; |
|
851 case 0x18: /* I/O CTRL (Direction) */ |
|
852 if(OPL->type&OPL_TYPE_IO) |
|
853 OPL->portDirection = v&0x0f; |
|
854 return; |
|
855 case 0x19: /* I/O DATA */ |
|
856 if(OPL->type&OPL_TYPE_IO) |
|
857 { |
|
858 OPL->portLatch = v; |
|
859 if(OPL->porthandler_w) |
|
860 OPL->porthandler_w(OPL->port_param,v&OPL->portDirection); |
|
861 } |
|
862 return; |
|
863 case 0x1a: /* PCM data */ |
|
864 return; |
|
865 #endif |
|
866 #endif |
|
867 } |
|
868 break; |
|
869 case 0x20: /* am,vib,ksr,eg type,mul */ |
|
870 slot = slot_array[r&0x1f]; |
|
871 if(slot == -1) return; |
|
872 set_mul(OPL,slot,v); |
|
873 return; |
|
874 case 0x40: |
|
875 slot = slot_array[r&0x1f]; |
|
876 if(slot == -1) return; |
|
877 set_ksl_tl(OPL,slot,v); |
|
878 return; |
|
879 case 0x60: |
|
880 slot = slot_array[r&0x1f]; |
|
881 if(slot == -1) return; |
|
882 set_ar_dr(OPL,slot,v); |
|
883 return; |
|
884 case 0x80: |
|
885 slot = slot_array[r&0x1f]; |
|
886 if(slot == -1) return; |
|
887 set_sl_rr(OPL,slot,v); |
|
888 return; |
|
889 case 0xa0: |
|
890 switch(r) |
|
891 { |
|
892 case 0xbd: |
|
893 /* amsep,vibdep,r,bd,sd,tom,tc,hh */ |
|
894 { |
|
895 UINT8 rkey = OPL->rythm^v; |
|
896 OPL->ams_table = &AMS_TABLE[v&0x80 ? AMS_ENT : 0]; |
|
897 OPL->vib_table = &VIB_TABLE[v&0x40 ? VIB_ENT : 0]; |
|
898 OPL->rythm = v&0x3f; |
|
899 if(OPL->rythm&0x20) |
|
900 { |
|
901 #if 0 |
|
902 usrintf_showmessage("OPL Rythm mode select"); |
|
903 #endif |
|
904 /* BD key on/off */ |
|
905 if(rkey&0x10) |
|
906 { |
|
907 if(v&0x10) |
|
908 { |
|
909 OPL->P_CH[6].op1_out[0] = OPL->P_CH[6].op1_out[1] = 0; |
|
910 OPL_KEYON(&OPL->P_CH[6].SLOT[SLOT1]); |
|
911 OPL_KEYON(&OPL->P_CH[6].SLOT[SLOT2]); |
|
912 } |
|
913 else |
|
914 { |
|
915 OPL_KEYOFF(&OPL->P_CH[6].SLOT[SLOT1]); |
|
916 OPL_KEYOFF(&OPL->P_CH[6].SLOT[SLOT2]); |
|
917 } |
|
918 } |
|
919 /* SD key on/off */ |
|
920 if(rkey&0x08) |
|
921 { |
|
922 if(v&0x08) OPL_KEYON(&OPL->P_CH[7].SLOT[SLOT2]); |
|
923 else OPL_KEYOFF(&OPL->P_CH[7].SLOT[SLOT2]); |
|
924 }/* TAM key on/off */ |
|
925 if(rkey&0x04) |
|
926 { |
|
927 if(v&0x04) OPL_KEYON(&OPL->P_CH[8].SLOT[SLOT1]); |
|
928 else OPL_KEYOFF(&OPL->P_CH[8].SLOT[SLOT1]); |
|
929 } |
|
930 /* TOP-CY key on/off */ |
|
931 if(rkey&0x02) |
|
932 { |
|
933 if(v&0x02) OPL_KEYON(&OPL->P_CH[8].SLOT[SLOT2]); |
|
934 else OPL_KEYOFF(&OPL->P_CH[8].SLOT[SLOT2]); |
|
935 } |
|
936 /* HH key on/off */ |
|
937 if(rkey&0x01) |
|
938 { |
|
939 if(v&0x01) OPL_KEYON(&OPL->P_CH[7].SLOT[SLOT1]); |
|
940 else OPL_KEYOFF(&OPL->P_CH[7].SLOT[SLOT1]); |
|
941 } |
|
942 } |
|
943 } |
|
944 return; |
|
945 } |
|
946 /* keyon,block,fnum */ |
|
947 if( (r&0x0f) > 8) return; |
|
948 CH = &OPL->P_CH[r&0x0f]; |
|
949 if(!(r&0x10)) |
|
950 { /* a0-a8 */ |
|
951 block_fnum = (CH->block_fnum&0x1f00) | v; |
|
952 } |
|
953 else |
|
954 { /* b0-b8 */ |
|
955 int keyon = (v>>5)&1; |
|
956 block_fnum = ((v&0x1f)<<8) | (CH->block_fnum&0xff); |
|
957 if(CH->keyon != keyon) |
|
958 { |
|
959 if( (CH->keyon=keyon) ) |
|
960 { |
|
961 CH->op1_out[0] = CH->op1_out[1] = 0; |
|
962 OPL_KEYON(&CH->SLOT[SLOT1]); |
|
963 OPL_KEYON(&CH->SLOT[SLOT2]); |
|
964 } |
|
965 else |
|
966 { |
|
967 OPL_KEYOFF(&CH->SLOT[SLOT1]); |
|
968 OPL_KEYOFF(&CH->SLOT[SLOT2]); |
|
969 } |
|
970 } |
|
971 } |
|
972 /* update */ |
|
973 if(CH->block_fnum != block_fnum) |
|
974 { |
|
975 int blockRv = 7-(block_fnum>>10); |
|
976 int fnum = block_fnum&0x3ff; |
|
977 CH->block_fnum = block_fnum; |
|
978 |
|
979 CH->ksl_base = KSL_TABLE[block_fnum>>6]; |
|
980 CH->fc = OPL->FN_TABLE[fnum]>>blockRv; |
|
981 CH->kcode = CH->block_fnum>>9; |
|
982 if( (OPL->mode&0x40) && CH->block_fnum&0x100) CH->kcode |=1; |
|
983 CALC_FCSLOT(CH,&CH->SLOT[SLOT1]); |
|
984 CALC_FCSLOT(CH,&CH->SLOT[SLOT2]); |
|
985 } |
|
986 return; |
|
987 case 0xc0: |
|
988 /* FB,C */ |
|
989 if( (r&0x0f) > 8) return; |
|
990 CH = &OPL->P_CH[r&0x0f]; |
|
991 { |
|
992 int feedback = (v>>1)&7; |
|
993 CH->FB = feedback ? (8+1) - feedback : 0; |
|
994 CH->CON = v&1; |
|
995 set_algorythm(CH); |
|
996 } |
|
997 return; |
|
998 case 0xe0: /* wave type */ |
|
999 slot = slot_array[r&0x1f]; |
|
1000 if(slot == -1) return; |
|
1001 CH = &OPL->P_CH[slot/2]; |
|
1002 if(OPL->wavesel) |
|
1003 { |
|
1004 /* LOG(LOG_INF,("OPL SLOT %d wave select %d\n",slot,v&3)); */ |
|
1005 CH->SLOT[slot&1].wavetable = &SIN_TABLE[(v&0x03)*SIN_ENT]; |
|
1006 } |
|
1007 return; |
|
1008 } |
|
1009 } |
|
1010 |
|
1011 /* lock/unlock for common table */ |
|
1012 static int OPL_LockTable(void) |
|
1013 { |
|
1014 num_lock++; |
|
1015 if(num_lock>1) return 0; |
|
1016 /* first time */ |
|
1017 cur_chip = NULL; |
|
1018 /* allocate total level table (128kb space) */ |
|
1019 if( !OPLOpenTable() ) |
|
1020 { |
|
1021 num_lock--; |
|
1022 return -1; |
|
1023 } |
|
1024 return 0; |
|
1025 } |
|
1026 |
|
1027 static void OPL_UnLockTable(void) |
|
1028 { |
|
1029 if(num_lock) num_lock--; |
|
1030 if(num_lock) return; |
|
1031 /* last time */ |
|
1032 cur_chip = NULL; |
|
1033 OPLCloseTable(); |
|
1034 } |
|
1035 |
|
1036 #if (BUILD_YM3812 || BUILD_YM3526) |
|
1037 /*******************************************************************************/ |
|
1038 /* YM3812 local section */ |
|
1039 /*******************************************************************************/ |
|
1040 |
|
1041 /* ---------- update one of chip ----------- */ |
|
1042 void YM3812UpdateOne(FM_OPL *OPL, INT16 *buffer, int length) |
|
1043 { |
|
1044 int i; |
|
1045 int data; |
|
1046 OPLSAMPLE *buf = buffer; |
|
1047 UINT32 amsCnt = OPL->amsCnt; |
|
1048 UINT32 vibCnt = OPL->vibCnt; |
|
1049 UINT8 rythm = OPL->rythm&0x20; |
|
1050 OPL_CH *CH,*R_CH; |
|
1051 |
|
1052 if( (void *)OPL != cur_chip ){ |
|
1053 cur_chip = (void *)OPL; |
|
1054 /* channel pointers */ |
|
1055 S_CH = OPL->P_CH; |
|
1056 E_CH = &S_CH[9]; |
|
1057 /* rythm slot */ |
|
1058 SLOT7_1 = &S_CH[7].SLOT[SLOT1]; |
|
1059 SLOT7_2 = &S_CH[7].SLOT[SLOT2]; |
|
1060 SLOT8_1 = &S_CH[8].SLOT[SLOT1]; |
|
1061 SLOT8_2 = &S_CH[8].SLOT[SLOT2]; |
|
1062 /* LFO state */ |
|
1063 amsIncr = OPL->amsIncr; |
|
1064 vibIncr = OPL->vibIncr; |
|
1065 ams_table = OPL->ams_table; |
|
1066 vib_table = OPL->vib_table; |
|
1067 } |
|
1068 R_CH = rythm ? &S_CH[6] : E_CH; |
|
1069 for( i=0; i < length ; i++ ) |
|
1070 { |
|
1071 /* channel A channel B channel C */ |
|
1072 /* LFO */ |
|
1073 ams = ams_table[(amsCnt+=amsIncr)>>AMS_SHIFT]; |
|
1074 vib = vib_table[(vibCnt+=vibIncr)>>VIB_SHIFT]; |
|
1075 outd[0] = 0; |
|
1076 /* FM part */ |
|
1077 for(CH=S_CH ; CH < R_CH ; CH++) |
|
1078 OPL_CALC_CH(CH); |
|
1079 /* Rythn part */ |
|
1080 if(rythm) |
|
1081 OPL_CALC_RH(S_CH); |
|
1082 /* limit check */ |
|
1083 data = Limit( outd[0] , OPL_MAXOUT, OPL_MINOUT ); |
|
1084 /* store to sound buffer */ |
|
1085 buf[i] = data >> OPL_OUTSB; |
|
1086 } |
|
1087 |
|
1088 OPL->amsCnt = amsCnt; |
|
1089 OPL->vibCnt = vibCnt; |
|
1090 #ifdef OPL_OUTPUT_LOG |
|
1091 if(opl_dbg_fp) |
|
1092 { |
|
1093 for(opl_dbg_chip=0;opl_dbg_chip<opl_dbg_maxchip;opl_dbg_chip++) |
|
1094 if( opl_dbg_opl[opl_dbg_chip] == OPL) break; |
|
1095 fprintf(opl_dbg_fp,"%c%c%c",0x20+opl_dbg_chip,length&0xff,length/256); |
|
1096 } |
|
1097 #endif |
|
1098 } |
|
1099 #endif /* (BUILD_YM3812 || BUILD_YM3526) */ |
|
1100 |
|
1101 #if BUILD_Y8950 |
|
1102 |
|
1103 void Y8950UpdateOne(FM_OPL *OPL, INT16 *buffer, int length) |
|
1104 { |
|
1105 int i; |
|
1106 int data; |
|
1107 OPLSAMPLE *buf = buffer; |
|
1108 UINT32 amsCnt = OPL->amsCnt; |
|
1109 UINT32 vibCnt = OPL->vibCnt; |
|
1110 UINT8 rythm = OPL->rythm&0x20; |
|
1111 OPL_CH *CH,*R_CH; |
|
1112 YM_DELTAT *DELTAT = OPL->deltat; |
|
1113 |
|
1114 /* setup DELTA-T unit */ |
|
1115 YM_DELTAT_DECODE_PRESET(DELTAT); |
|
1116 |
|
1117 if( (void *)OPL != cur_chip ){ |
|
1118 cur_chip = (void *)OPL; |
|
1119 /* channel pointers */ |
|
1120 S_CH = OPL->P_CH; |
|
1121 E_CH = &S_CH[9]; |
|
1122 /* rythm slot */ |
|
1123 SLOT7_1 = &S_CH[7].SLOT[SLOT1]; |
|
1124 SLOT7_2 = &S_CH[7].SLOT[SLOT2]; |
|
1125 SLOT8_1 = &S_CH[8].SLOT[SLOT1]; |
|
1126 SLOT8_2 = &S_CH[8].SLOT[SLOT2]; |
|
1127 /* LFO state */ |
|
1128 amsIncr = OPL->amsIncr; |
|
1129 vibIncr = OPL->vibIncr; |
|
1130 ams_table = OPL->ams_table; |
|
1131 vib_table = OPL->vib_table; |
|
1132 } |
|
1133 R_CH = rythm ? &S_CH[6] : E_CH; |
|
1134 for( i=0; i < length ; i++ ) |
|
1135 { |
|
1136 /* channel A channel B channel C */ |
|
1137 /* LFO */ |
|
1138 ams = ams_table[(amsCnt+=amsIncr)>>AMS_SHIFT]; |
|
1139 vib = vib_table[(vibCnt+=vibIncr)>>VIB_SHIFT]; |
|
1140 outd[0] = 0; |
|
1141 /* deltaT ADPCM */ |
|
1142 if( DELTAT->portstate ) |
|
1143 YM_DELTAT_ADPCM_CALC(DELTAT); |
|
1144 /* FM part */ |
|
1145 for(CH=S_CH ; CH < R_CH ; CH++) |
|
1146 OPL_CALC_CH(CH); |
|
1147 /* Rythn part */ |
|
1148 if(rythm) |
|
1149 OPL_CALC_RH(S_CH); |
|
1150 /* limit check */ |
|
1151 data = Limit( outd[0] , OPL_MAXOUT, OPL_MINOUT ); |
|
1152 /* store to sound buffer */ |
|
1153 buf[i] = data >> OPL_OUTSB; |
|
1154 } |
|
1155 OPL->amsCnt = amsCnt; |
|
1156 OPL->vibCnt = vibCnt; |
|
1157 /* deltaT START flag */ |
|
1158 if( !DELTAT->portstate ) |
|
1159 OPL->status &= 0xfe; |
|
1160 } |
|
1161 #endif |
|
1162 |
|
1163 /* ---------- reset one of chip ---------- */ |
|
1164 void OPLResetChip(FM_OPL *OPL) |
|
1165 { |
|
1166 int c,s; |
|
1167 int i; |
|
1168 |
|
1169 /* reset chip */ |
|
1170 OPL->mode = 0; /* normal mode */ |
|
1171 OPL_STATUS_RESET(OPL,0x7f); |
|
1172 /* reset with register write */ |
|
1173 OPLWriteReg(OPL,0x01,0); /* wabesel disable */ |
|
1174 OPLWriteReg(OPL,0x02,0); /* Timer1 */ |
|
1175 OPLWriteReg(OPL,0x03,0); /* Timer2 */ |
|
1176 OPLWriteReg(OPL,0x04,0); /* IRQ mask clear */ |
|
1177 for(i = 0xff ; i >= 0x20 ; i-- ) OPLWriteReg(OPL,i,0); |
|
1178 /* reset OPerator paramater */ |
|
1179 for( c = 0 ; c < OPL->max_ch ; c++ ) |
|
1180 { |
|
1181 OPL_CH *CH = &OPL->P_CH[c]; |
|
1182 /* OPL->P_CH[c].PAN = OPN_CENTER; */ |
|
1183 for(s = 0 ; s < 2 ; s++ ) |
|
1184 { |
|
1185 /* wave table */ |
|
1186 CH->SLOT[s].wavetable = &SIN_TABLE[0]; |
|
1187 /* CH->SLOT[s].evm = ENV_MOD_RR; */ |
|
1188 CH->SLOT[s].evc = EG_OFF; |
|
1189 CH->SLOT[s].eve = EG_OFF+1; |
|
1190 CH->SLOT[s].evs = 0; |
|
1191 } |
|
1192 } |
|
1193 #if BUILD_Y8950 |
|
1194 if(OPL->type&OPL_TYPE_ADPCM) |
|
1195 { |
|
1196 YM_DELTAT *DELTAT = OPL->deltat; |
|
1197 |
|
1198 DELTAT->freqbase = OPL->freqbase; |
|
1199 DELTAT->output_pointer = outd; |
|
1200 DELTAT->portshift = 5; |
|
1201 DELTAT->output_range = DELTAT_MIXING_LEVEL<<TL_BITS; |
|
1202 YM_DELTAT_ADPCM_Reset(DELTAT,0); |
|
1203 } |
|
1204 #endif |
|
1205 } |
|
1206 |
|
1207 /* ---------- Create one of vietual YM3812 ---------- */ |
|
1208 /* 'rate' is sampling rate and 'bufsiz' is the size of the */ |
|
1209 FM_OPL *OPLCreate(int type, int clock, int rate) |
|
1210 { |
|
1211 char *ptr; |
|
1212 FM_OPL *OPL; |
|
1213 int state_size; |
|
1214 int max_ch = 9; /* normaly 9 channels */ |
|
1215 |
|
1216 if( OPL_LockTable() ==-1) return NULL; |
|
1217 /* allocate OPL state space */ |
|
1218 state_size = sizeof(FM_OPL); |
|
1219 state_size += sizeof(OPL_CH)*max_ch; |
|
1220 #if BUILD_Y8950 |
|
1221 if(type&OPL_TYPE_ADPCM) state_size+= sizeof(YM_DELTAT); |
|
1222 #endif |
|
1223 /* allocate memory block */ |
|
1224 ptr = malloc(state_size); |
|
1225 if(ptr==NULL) return NULL; |
|
1226 /* clear */ |
|
1227 memset(ptr,0,state_size); |
|
1228 OPL = (FM_OPL *)ptr; ptr+=sizeof(FM_OPL); |
|
1229 OPL->P_CH = (OPL_CH *)ptr; ptr+=sizeof(OPL_CH)*max_ch; |
|
1230 #if BUILD_Y8950 |
|
1231 if(type&OPL_TYPE_ADPCM) OPL->deltat = (YM_DELTAT *)ptr; ptr+=sizeof(YM_DELTAT); |
|
1232 #endif |
|
1233 /* set channel state pointer */ |
|
1234 OPL->type = type; |
|
1235 OPL->clock = clock; |
|
1236 OPL->rate = rate; |
|
1237 OPL->max_ch = max_ch; |
|
1238 /* init grobal tables */ |
|
1239 OPL_initalize(OPL); |
|
1240 /* reset chip */ |
|
1241 OPLResetChip(OPL); |
|
1242 #ifdef OPL_OUTPUT_LOG |
|
1243 if(!opl_dbg_fp) |
|
1244 { |
|
1245 opl_dbg_fp = fopen("opllog.opl","wb"); |
|
1246 opl_dbg_maxchip = 0; |
|
1247 } |
|
1248 if(opl_dbg_fp) |
|
1249 { |
|
1250 opl_dbg_opl[opl_dbg_maxchip] = OPL; |
|
1251 fprintf(opl_dbg_fp,"%c%c%c%c%c%c",0x00+opl_dbg_maxchip, |
|
1252 type, |
|
1253 clock&0xff, |
|
1254 (clock/0x100)&0xff, |
|
1255 (clock/0x10000)&0xff, |
|
1256 (clock/0x1000000)&0xff); |
|
1257 opl_dbg_maxchip++; |
|
1258 } |
|
1259 #endif |
|
1260 return OPL; |
|
1261 } |
|
1262 |
|
1263 /* ---------- Destroy one of vietual YM3812 ---------- */ |
|
1264 void OPLDestroy(FM_OPL *OPL) |
|
1265 { |
|
1266 #ifdef OPL_OUTPUT_LOG |
|
1267 if(opl_dbg_fp) |
|
1268 { |
|
1269 fclose(opl_dbg_fp); |
|
1270 opl_dbg_fp = NULL; |
|
1271 } |
|
1272 #endif |
|
1273 OPL_UnLockTable(); |
|
1274 free(OPL); |
|
1275 } |
|
1276 |
|
1277 /* ---------- Option handlers ---------- */ |
|
1278 |
|
1279 void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset) |
|
1280 { |
|
1281 OPL->TimerHandler = TimerHandler; |
|
1282 OPL->TimerParam = channelOffset; |
|
1283 } |
|
1284 void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param) |
|
1285 { |
|
1286 OPL->IRQHandler = IRQHandler; |
|
1287 OPL->IRQParam = param; |
|
1288 } |
|
1289 void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param) |
|
1290 { |
|
1291 OPL->UpdateHandler = UpdateHandler; |
|
1292 OPL->UpdateParam = param; |
|
1293 } |
|
1294 #if BUILD_Y8950 |
|
1295 void OPLSetPortHandler(FM_OPL *OPL,OPL_PORTHANDLER_W PortHandler_w,OPL_PORTHANDLER_R PortHandler_r,int param) |
|
1296 { |
|
1297 OPL->porthandler_w = PortHandler_w; |
|
1298 OPL->porthandler_r = PortHandler_r; |
|
1299 OPL->port_param = param; |
|
1300 } |
|
1301 |
|
1302 void OPLSetKeyboardHandler(FM_OPL *OPL,OPL_PORTHANDLER_W KeyboardHandler_w,OPL_PORTHANDLER_R KeyboardHandler_r,int param) |
|
1303 { |
|
1304 OPL->keyboardhandler_w = KeyboardHandler_w; |
|
1305 OPL->keyboardhandler_r = KeyboardHandler_r; |
|
1306 OPL->keyboard_param = param; |
|
1307 } |
|
1308 #endif |
|
1309 /* ---------- YM3812 I/O interface ---------- */ |
|
1310 int OPLWrite(FM_OPL *OPL,int a,int v) |
|
1311 { |
|
1312 if( !(a&1) ) |
|
1313 { /* address port */ |
|
1314 OPL->address = v & 0xff; |
|
1315 } |
|
1316 else |
|
1317 { /* data port */ |
|
1318 if(OPL->UpdateHandler) OPL->UpdateHandler(OPL->UpdateParam,0); |
|
1319 #ifdef OPL_OUTPUT_LOG |
|
1320 if(opl_dbg_fp) |
|
1321 { |
|
1322 for(opl_dbg_chip=0;opl_dbg_chip<opl_dbg_maxchip;opl_dbg_chip++) |
|
1323 if( opl_dbg_opl[opl_dbg_chip] == OPL) break; |
|
1324 fprintf(opl_dbg_fp,"%c%c%c",0x10+opl_dbg_chip,OPL->address,v); |
|
1325 } |
|
1326 #endif |
|
1327 OPLWriteReg(OPL,OPL->address,v); |
|
1328 } |
|
1329 return OPL->status>>7; |
|
1330 } |
|
1331 |
|
1332 unsigned char OPLRead(FM_OPL *OPL,int a) |
|
1333 { |
|
1334 if( !(a&1) ) |
|
1335 { /* status port */ |
|
1336 return OPL->status & (OPL->statusmask|0x80); |
|
1337 } |
|
1338 /* data port */ |
|
1339 switch(OPL->address) |
|
1340 { |
|
1341 case 0x05: /* KeyBoard IN */ |
|
1342 if(OPL->type&OPL_TYPE_KEYBOARD) |
|
1343 { |
|
1344 if(OPL->keyboardhandler_r) |
|
1345 return OPL->keyboardhandler_r(OPL->keyboard_param); |
|
1346 else |
|
1347 LOG(LOG_WAR,("OPL:read unmapped KEYBOARD port\n")); |
|
1348 } |
|
1349 return 0; |
|
1350 #if 0 |
|
1351 case 0x0f: /* ADPCM-DATA */ |
|
1352 return 0; |
|
1353 #endif |
|
1354 case 0x19: /* I/O DATA */ |
|
1355 if(OPL->type&OPL_TYPE_IO) |
|
1356 { |
|
1357 if(OPL->porthandler_r) |
|
1358 return OPL->porthandler_r(OPL->port_param); |
|
1359 else |
|
1360 LOG(LOG_WAR,("OPL:read unmapped I/O port\n")); |
|
1361 } |
|
1362 return 0; |
|
1363 case 0x1a: /* PCM-DATA */ |
|
1364 return 0; |
|
1365 } |
|
1366 return 0; |
|
1367 } |
|
1368 |
|
1369 int OPLTimerOver(FM_OPL *OPL,int c) |
|
1370 { |
|
1371 if( c ) |
|
1372 { /* Timer B */ |
|
1373 OPL_STATUS_SET(OPL,0x20); |
|
1374 } |
|
1375 else |
|
1376 { /* Timer A */ |
|
1377 OPL_STATUS_SET(OPL,0x40); |
|
1378 /* CSM mode key,TL controll */ |
|
1379 if( OPL->mode & 0x80 ) |
|
1380 { /* CSM mode total level latch and auto key on */ |
|
1381 int ch; |
|
1382 if(OPL->UpdateHandler) OPL->UpdateHandler(OPL->UpdateParam,0); |
|
1383 for(ch=0;ch<9;ch++) |
|
1384 CSMKeyControll( &OPL->P_CH[ch] ); |
|
1385 } |
|
1386 } |
|
1387 /* reload timer */ |
|
1388 if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+c,(double)OPL->T[c]*OPL->TimerBase); |
|
1389 return OPL->status>>7; |
|
1390 } |