1 | Index: sound/module.mk
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2 | ===================================================================
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3 | --- sound/module.mk (revision 40184)
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4 | +++ sound/module.mk (working copy)
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5 | @@ -30,6 +30,9 @@
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6 | mods/rjp1.o \
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7 | mods/soundfx.o \
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8 | softsynth/adlib.o \
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9 | + softsynth/adlib/dbopl.o \
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10 | + softsynth/adlib/dosbox.o \
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11 | + softsynth/adlib/mame.o \
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12 | softsynth/ym2612.o \
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13 | softsynth/fluidsynth.o \
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14 | softsynth/mt32.o \
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15 | Index: sound/fmopl.h
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16 | ===================================================================
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17 | --- sound/fmopl.h 2009-04-28 18:36:54.319782168 +0200
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18 | +++ sound/fmopl.h 2009-04-28 18:38:31.171943036 +0200
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19 | @@ -8,166 +8,64 @@
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20 | * modify it under the terms of the GNU General Public License
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21 | * as published by the Free Software Foundation; either version 2
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22 | * of the License, or (at your option) any later version.
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23 | -
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24 | + *
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25 | * This program is distributed in the hope that it will be useful,
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26 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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27 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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28 | * GNU General Public License for more details.
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29 | -
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30 | + *
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31 | * You should have received a copy of the GNU General Public License
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32 | * along with this program; if not, write to the Free Software
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33 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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34 | *
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35 | - * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/trunk/sound/fmopl.h $
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36 | - * $Id: fmopl.h 38211 2009-02-15 10:07:50Z sev $
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37 | - *
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38 | - * LGPL licensed version of MAMEs fmopl (V0.37a modified) by
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39 | - * Tatsuyuki Satoh. Included from LGPL'ed AdPlug.
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40 | + * $URL$
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41 | + * $Id$
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42 | */
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43 |
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44 | -
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45 | #ifndef SOUND_FMOPL_H
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46 | #define SOUND_FMOPL_H
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47 |
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48 | #include "common/scummsys.h"
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49 | -#include "common/util.h"
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50 |
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51 | -enum {
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52 | - FMOPL_ENV_BITS_HQ = 16,
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53 | - FMOPL_ENV_BITS_MQ = 8,
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54 | - FMOPL_ENV_BITS_LQ = 8,
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55 | - FMOPL_EG_ENT_HQ = 4096,
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56 | - FMOPL_EG_ENT_MQ = 1024,
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57 | - FMOPL_EG_ENT_LQ = 128
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58 | -};
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59 | +namespace AdLib {
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60 | +
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61 | +// TODO: Documentation
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62 | +class AdLib {
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63 | +public:
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64 | + virtual ~AdLib() {}
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65 |
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66 | + enum kOplType {
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67 | + kOpl2 = 0
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68 | + };
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69 |
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70 | -typedef void (*OPL_TIMERHANDLER)(int channel,double interval_Sec);
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71 | -typedef void (*OPL_IRQHANDLER)(int param,int irq);
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72 | -typedef void (*OPL_UPDATEHANDLER)(int param,int min_interval_us);
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73 | -
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74 | -#define OPL_TYPE_WAVESEL 0x01 /* waveform select */
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75 | -
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76 | -/* Saving is necessary for member of the 'R' mark for suspend/resume */
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77 | -/* ---------- OPL one of slot ---------- */
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78 | -typedef struct fm_opl_slot {
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79 | - int TL; /* total level :TL << 8 */
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80 | - int TLL; /* adjusted now TL */
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81 | - uint8 KSR; /* key scale rate :(shift down bit) */
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82 | - int *AR; /* attack rate :&AR_TABLE[AR<<2] */
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83 | - int *DR; /* decay rate :&DR_TABLE[DR<<2] */
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84 | - int SL; /* sustain level :SL_TABLE[SL] */
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85 | - int *RR; /* release rate :&DR_TABLE[RR<<2] */
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86 | - uint8 ksl; /* keyscale level :(shift down bits) */
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87 | - uint8 ksr; /* key scale rate :kcode>>KSR */
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88 | - uint mul; /* multiple :ML_TABLE[ML] */
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89 | - uint Cnt; /* frequency count */
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90 | - uint Incr; /* frequency step */
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91 | -
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92 | - /* envelope generator state */
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93 | - uint8 eg_typ;/* envelope type flag */
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94 | - uint8 evm; /* envelope phase */
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95 | - int evc; /* envelope counter */
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96 | - int eve; /* envelope counter end point */
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97 | - int evs; /* envelope counter step */
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98 | - int evsa; /* envelope step for AR :AR[ksr] */
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99 | - int evsd; /* envelope step for DR :DR[ksr] */
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100 | - int evsr; /* envelope step for RR :RR[ksr] */
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101 | -
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102 | - /* LFO */
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103 | - uint8 ams; /* ams flag */
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104 | - uint8 vib; /* vibrate flag */
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105 | - /* wave selector */
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106 | - int **wavetable;
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107 | -} OPL_SLOT;
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108 | -
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109 | -/* ---------- OPL one of channel ---------- */
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110 | -typedef struct fm_opl_channel {
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111 | - OPL_SLOT SLOT[2];
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112 | - uint8 CON; /* connection type */
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113 | - uint8 FB; /* feed back :(shift down bit)*/
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114 | - int *connect1; /* slot1 output pointer */
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115 | - int *connect2; /* slot2 output pointer */
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116 | - int op1_out[2]; /* slot1 output for selfeedback */
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117 | -
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118 | - /* phase generator state */
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119 | - uint block_fnum; /* block+fnum */
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120 | - uint8 kcode; /* key code : KeyScaleCode */
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121 | - uint fc; /* Freq. Increment base */
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122 | - uint ksl_base; /* KeyScaleLevel Base step */
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123 | - uint8 keyon; /* key on/off flag */
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124 | -} OPL_CH;
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125 | -
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126 | -/* OPL state */
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127 | -typedef struct fm_opl_f {
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128 | - uint8 type; /* chip type */
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129 | - int clock; /* master clock (Hz) */
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130 | - int rate; /* sampling rate (Hz) */
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131 | - double freqbase; /* frequency base */
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132 | - double TimerBase; /* Timer base time (==sampling time) */
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133 | - uint8 address; /* address register */
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134 | - uint8 status; /* status flag */
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135 | - uint8 statusmask; /* status mask */
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136 | - uint mode; /* Reg.08 : CSM , notesel,etc. */
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137 | -
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138 | - /* Timer */
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139 | - int T[2]; /* timer counter */
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140 | - uint8 st[2]; /* timer enable */
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141 | -
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142 | - /* FM channel slots */
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143 | - OPL_CH *P_CH; /* pointer of CH */
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144 | - int max_ch; /* maximum channel */
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145 | -
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146 | - /* Rythm sention */
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147 | - uint8 rythm; /* Rythm mode , key flag */
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148 | -
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149 | - /* time tables */
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150 | - int AR_TABLE[76]; /* atttack rate tables */
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151 | - int DR_TABLE[76]; /* decay rate tables */
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152 | - uint FN_TABLE[1024];/* fnumber -> increment counter */
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153 | -
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154 | - /* LFO */
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155 | - int *ams_table;
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156 | - int *vib_table;
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157 | - int amsCnt;
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158 | - int amsIncr;
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159 | - int vibCnt;
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160 | - int vibIncr;
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161 | -
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162 | - /* wave selector enable flag */
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163 | - uint8 wavesel;
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164 | -
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165 | - /* external event callback handler */
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166 | - OPL_TIMERHANDLER TimerHandler; /* TIMER handler */
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167 | - int TimerParam; /* TIMER parameter */
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168 | - OPL_IRQHANDLER IRQHandler; /* IRQ handler */
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169 | - int IRQParam; /* IRQ parameter */
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170 | - OPL_UPDATEHANDLER UpdateHandler; /* stream update handler */
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171 | - int UpdateParam; /* stream update parameter */
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172 | -
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173 | - Common::RandomSource rnd;
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174 | -} FM_OPL;
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175 | -
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176 | -/* ---------- Generic interface section ---------- */
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177 | -#define OPL_TYPE_YM3526 (0)
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178 | -#define OPL_TYPE_YM3812 (OPL_TYPE_WAVESEL)
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179 | + virtual void init(int rate, kOplType type = kOpl2) = 0;
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180 | + virtual void reset() = 0;
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181 |
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182 | -void OPLBuildTables(int ENV_BITS_PARAM, int EG_ENT_PARAM);
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183 | + virtual void write(int a, int v) = 0;
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184 | + virtual byte read(int a) = 0;
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185 | +
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186 | + virtual void writeReg(int r, int v) = 0;
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187 | +
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188 | + virtual void readBuffer(int16 *buffer, int length) = 0;
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189 | +
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190 | + static AdLib *createInstance();
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191 | +};
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192 | +
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193 | +} // end of namespace AdLib
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194 | +
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195 | +// Legacy API
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196 | +typedef AdLib::AdLib FM_OPL;
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197 |
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198 | -FM_OPL *OPLCreate(int type, int clock, int rate);
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199 | void OPLDestroy(FM_OPL *OPL);
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200 | -void OPLSetTimerHandler(FM_OPL *OPL, OPL_TIMERHANDLER TimerHandler, int channelOffset);
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201 | -void OPLSetIRQHandler(FM_OPL *OPL, OPL_IRQHANDLER IRQHandler, int param);
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202 | -void OPLSetUpdateHandler(FM_OPL *OPL, OPL_UPDATEHANDLER UpdateHandler, int param);
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203 |
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204 | void OPLResetChip(FM_OPL *OPL);
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205 | -int OPLWrite(FM_OPL *OPL, int a, int v);
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206 | +void OPLWrite(FM_OPL *OPL, int a, int v);
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207 | unsigned char OPLRead(FM_OPL *OPL, int a);
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208 | -int OPLTimerOver(FM_OPL *OPL, int c);
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209 | void OPLWriteReg(FM_OPL *OPL, int r, int v);
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210 | -void YM3812UpdateOne(FM_OPL *OPL, int16 *buffer, int length, int interleave = 0);
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211 | +void YM3812UpdateOne(FM_OPL *OPL, int16 *buffer, int length);
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212 |
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213 | // Factory method
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214 | FM_OPL *makeAdlibOPL(int rate);
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215 |
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216 | #endif
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217 | +
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218 | Index: sound/fmopl.cpp
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219 | ===================================================================
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220 | --- sound/fmopl.cpp 2009-04-28 18:38:05.947781895 +0200
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221 | +++ sound/fmopl.cpp 2009-04-28 18:38:21.552408141 +0200
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222 | @@ -8,1184 +8,63 @@
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223 | * modify it under the terms of the GNU General Public License
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224 | * as published by the Free Software Foundation; either version 2
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225 | * of the License, or (at your option) any later version.
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226 | -
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227 | + *
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228 | * This program is distributed in the hope that it will be useful,
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229 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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230 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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231 | * GNU General Public License for more details.
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232 | -
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233 | + *
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234 | * You should have received a copy of the GNU General Public License
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235 | * along with this program; if not, write to the Free Software
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236 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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237 | *
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238 | - * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/trunk/sound/fmopl.cpp $
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239 | - * $Id: fmopl.cpp 38211 2009-02-15 10:07:50Z sev $
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240 | - *
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241 | - * LGPL licensed version of MAMEs fmopl (V0.37a modified) by
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242 | - * Tatsuyuki Satoh. Included from LGPL'ed AdPlug.
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243 | + * $URL$
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244 | + * $Id$
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245 | */
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246 |
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247 | -#include <stdio.h>
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248 | -#include <stdlib.h>
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249 | -#include <string.h>
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250 | -#include <stdarg.h>
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251 | -#include <math.h>
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252 | -
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253 | #include "sound/fmopl.h"
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254 |
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255 | -#if defined (_WIN32_WCE) || defined (__SYMBIAN32__) || defined(PALMOS_MODE) || defined(__GP32__) || defined(GP2X) || defined (__MAEMO__) || defined(__DS__) || defined (__MINT__)
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256 | -#include "common/config-manager.h"
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257 | -#endif
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258 | -
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259 | -/* -------------------- preliminary define section --------------------- */
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260 | -/* attack/decay rate time rate */
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261 | -#define OPL_ARRATE 141280 /* RATE 4 = 2826.24ms @ 3.6MHz */
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262 | -#define OPL_DRRATE 1956000 /* RATE 4 = 39280.64ms @ 3.6MHz */
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263 | -
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264 | -#define FREQ_BITS 24 /* frequency turn */
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265 | -
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266 | -/* counter bits = 20 , octerve 7 */
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267 | -#define FREQ_RATE (1<<(FREQ_BITS-20))
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268 | -#define TL_BITS (FREQ_BITS+2)
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269 | -
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270 | -/* final output shift , limit minimum and maximum */
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271 | -#define OPL_OUTSB (TL_BITS+3-16) /* OPL output final shift 16bit */
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272 | -#define OPL_MAXOUT (0x7fff<<OPL_OUTSB)
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273 | -#define OPL_MINOUT (-0x8000<<OPL_OUTSB)
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274 | -
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275 | -/* -------------------- quality selection --------------------- */
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276 | -
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277 | -/* sinwave entries */
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278 | -/* used static memory = SIN_ENT * 4 (byte) */
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279 | -#ifdef __DS__
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280 | -#include "dsmain.h"
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281 | -#define SIN_ENT_SHIFT 8
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282 | -#else
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283 | -#define SIN_ENT_SHIFT 11
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284 | -#endif
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285 | -#define SIN_ENT (1<<SIN_ENT_SHIFT)
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286 | -
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287 | -/* output level entries (envelope,sinwave) */
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288 | -/* envelope counter lower bits */
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289 | -int ENV_BITS;
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290 | -/* envelope output entries */
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291 | -int EG_ENT;
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292 | -
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293 | -/* used dynamic memory = EG_ENT*4*4(byte)or EG_ENT*6*4(byte) */
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294 | -/* used static memory = EG_ENT*4 (byte) */
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295 | -int EG_OFF; /* OFF */
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296 | -int EG_DED;
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297 | -int EG_DST; /* DECAY START */
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298 | -int EG_AED;
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299 | -#define EG_AST 0 /* ATTACK START */
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300 | -
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301 | -#define EG_STEP (96.0/EG_ENT) /* OPL is 0.1875 dB step */
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302 | -
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303 | -/* LFO table entries */
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304 | -#define VIB_ENT 512
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305 | -#define VIB_SHIFT (32-9)
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306 | -#define AMS_ENT 512
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307 | -#define AMS_SHIFT (32-9)
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308 | -
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309 | -#define VIB_RATE_SHIFT 8
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310 | -#define VIB_RATE (1<<VIB_RATE_SHIFT)
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311 | -
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312 | -/* -------------------- local defines , macros --------------------- */
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313 | -
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314 | -/* register number to channel number , slot offset */
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315 | -#define SLOT1 0
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316 | -#define SLOT2 1
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317 | -
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318 | -/* envelope phase */
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319 | -#define ENV_MOD_RR 0x00
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320 | -#define ENV_MOD_DR 0x01
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321 | -#define ENV_MOD_AR 0x02
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322 | -
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323 | -/* -------------------- tables --------------------- */
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324 | -static const int slot_array[32] = {
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325 | - 0, 2, 4, 1, 3, 5,-1,-1,
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326 | - 6, 8,10, 7, 9,11,-1,-1,
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327 | - 12,14,16,13,15,17,-1,-1,
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328 | - -1,-1,-1,-1,-1,-1,-1,-1
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329 | -};
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330 | -
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331 | -static uint KSL_TABLE[8 * 16];
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332 | -
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333 | -static const double KSL_TABLE_SEED[8 * 16] = {
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334 | - /* OCT 0 */
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335 | - 0.000, 0.000, 0.000, 0.000,
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336 | - 0.000, 0.000, 0.000, 0.000,
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337 | - 0.000, 0.000, 0.000, 0.000,
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338 | - 0.000, 0.000, 0.000, 0.000,
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339 | - /* OCT 1 */
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340 | - 0.000, 0.000, 0.000, 0.000,
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341 | - 0.000, 0.000, 0.000, 0.000,
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342 | - 0.000, 0.750, 1.125, 1.500,
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343 | - 1.875, 2.250, 2.625, 3.000,
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344 | - /* OCT 2 */
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345 | - 0.000, 0.000, 0.000, 0.000,
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346 | - 0.000, 1.125, 1.875, 2.625,
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347 | - 3.000, 3.750, 4.125, 4.500,
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348 | - 4.875, 5.250, 5.625, 6.000,
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349 | - /* OCT 3 */
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350 | - 0.000, 0.000, 0.000, 1.875,
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351 | - 3.000, 4.125, 4.875, 5.625,
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352 | - 6.000, 6.750, 7.125, 7.500,
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353 | - 7.875, 8.250, 8.625, 9.000,
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354 | - /* OCT 4 */
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355 | - 0.000, 0.000, 3.000, 4.875,
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356 | - 6.000, 7.125, 7.875, 8.625,
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357 | - 9.000, 9.750, 10.125, 10.500,
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358 | - 10.875, 11.250, 11.625, 12.000,
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359 | - /* OCT 5 */
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360 | - 0.000, 3.000, 6.000, 7.875,
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361 | - 9.000, 10.125, 10.875, 11.625,
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362 | - 12.000, 12.750, 13.125, 13.500,
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363 | - 13.875, 14.250, 14.625, 15.000,
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364 | - /* OCT 6 */
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365 | - 0.000, 6.000, 9.000, 10.875,
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366 | - 12.000, 13.125, 13.875, 14.625,
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367 | - 15.000, 15.750, 16.125, 16.500,
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368 | - 16.875, 17.250, 17.625, 18.000,
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369 | - /* OCT 7 */
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370 | - 0.000, 9.000, 12.000, 13.875,
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371 | - 15.000, 16.125, 16.875, 17.625,
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372 | - 18.000, 18.750, 19.125, 19.500,
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373 | - 19.875, 20.250, 20.625, 21.000
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374 | -};
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375 | -
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376 | -/* sustain level table (3db per step) */
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377 | -/* 0 - 15: 0, 3, 6, 9,12,15,18,21,24,27,30,33,36,39,42,93 (dB)*/
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378 | -
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379 | -static int SL_TABLE[16];
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380 | -
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381 | -static const uint SL_TABLE_SEED[16] = {
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382 | - 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 31
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383 | -};
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384 | -
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385 | -#define TL_MAX (EG_ENT * 2) /* limit(tl + ksr + envelope) + sinwave */
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386 | -/* TotalLevel : 48 24 12 6 3 1.5 0.75 (dB) */
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387 | -/* TL_TABLE[ 0 to TL_MAX ] : plus section */
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388 | -/* TL_TABLE[ TL_MAX to TL_MAX+TL_MAX-1 ] : minus section */
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389 | -static int *TL_TABLE;
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390 | -
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391 | -/* pointers to TL_TABLE with sinwave output offset */
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392 | -static int **SIN_TABLE;
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393 | -
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394 | -/* LFO table */
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395 | -static int *AMS_TABLE;
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396 | -static int *VIB_TABLE;
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397 | -
|
---|
398 | -/* envelope output curve table */
|
---|
399 | -/* attack + decay + OFF */
|
---|
400 | -//static int ENV_CURVE[2*EG_ENT+1];
|
---|
401 | -//static int ENV_CURVE[2 * 4096 + 1]; // to keep it static ...
|
---|
402 | -static int *ENV_CURVE;
|
---|
403 | -
|
---|
404 | -
|
---|
405 | -/* multiple table */
|
---|
406 | -#define ML(a) (int)(a * 2)
|
---|
407 | -static const uint MUL_TABLE[16]= {
|
---|
408 | -/* 1/2, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15 */
|
---|
409 | - ML(0.50), ML(1.00), ML(2.00), ML(3.00), ML(4.00), ML(5.00), ML(6.00), ML(7.00),
|
---|
410 | - ML(8.00), ML(9.00), ML(10.00), ML(10.00),ML(12.00),ML(12.00),ML(15.00),ML(15.00)
|
---|
411 | -};
|
---|
412 | -#undef ML
|
---|
413 | -
|
---|
414 | -/* dummy attack / decay rate ( when rate == 0 ) */
|
---|
415 | -static int RATE_0[16]=
|
---|
416 | -{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
|
---|
417 | -
|
---|
418 | -/* -------------------- static state --------------------- */
|
---|
419 | -
|
---|
420 | -/* lock level of common table */
|
---|
421 | -static int num_lock = 0;
|
---|
422 | -
|
---|
423 | -/* work table */
|
---|
424 | -static void *cur_chip = NULL; /* current chip point */
|
---|
425 | -/* currenct chip state */
|
---|
426 | -/* static OPLSAMPLE *bufL,*bufR; */
|
---|
427 | -static OPL_CH *S_CH;
|
---|
428 | -static OPL_CH *E_CH;
|
---|
429 | -OPL_SLOT *SLOT7_1, *SLOT7_2, *SLOT8_1, *SLOT8_2;
|
---|
430 | -
|
---|
431 | -static int outd[1];
|
---|
432 | -static int ams;
|
---|
433 | -static int vib;
|
---|
434 | -int *ams_table;
|
---|
435 | -int *vib_table;
|
---|
436 | -static int amsIncr;
|
---|
437 | -static int vibIncr;
|
---|
438 | -static int feedback2; /* connect for SLOT 2 */
|
---|
439 | -
|
---|
440 | -/* --------------------- rebuild tables ------------------- */
|
---|
441 | -
|
---|
442 | -#define SC_KSL(mydb) ((uint) (mydb / (EG_STEP / 2)))
|
---|
443 | -#define SC_SL(db) (int)(db * ((3 / EG_STEP) * (1 << ENV_BITS))) + EG_DST
|
---|
444 | -
|
---|
445 | -void OPLBuildTables(int ENV_BITS_PARAM, int EG_ENT_PARAM) {
|
---|
446 | - int i;
|
---|
447 | -
|
---|
448 | - ENV_BITS = ENV_BITS_PARAM;
|
---|
449 | - EG_ENT = EG_ENT_PARAM;
|
---|
450 | - EG_OFF = ((2 * EG_ENT)<<ENV_BITS); /* OFF */
|
---|
451 | - EG_DED = EG_OFF;
|
---|
452 | - EG_DST = (EG_ENT << ENV_BITS); /* DECAY START */
|
---|
453 | - EG_AED = EG_DST;
|
---|
454 | - //EG_STEP = (96.0/EG_ENT);
|
---|
455 | -
|
---|
456 | - for (i = 0; i < ARRAYSIZE(KSL_TABLE_SEED); i++)
|
---|
457 | - KSL_TABLE[i] = SC_KSL(KSL_TABLE_SEED[i]);
|
---|
458 | -
|
---|
459 | - for (i = 0; i < ARRAYSIZE(SL_TABLE_SEED); i++)
|
---|
460 | - SL_TABLE[i] = SC_SL(SL_TABLE_SEED[i]);
|
---|
461 | -}
|
---|
462 | -
|
---|
463 | -#undef SC_KSL
|
---|
464 | -#undef SC_SL
|
---|
465 | -
|
---|
466 | -/* --------------------- subroutines --------------------- */
|
---|
467 | -
|
---|
468 | -/* status set and IRQ handling */
|
---|
469 | -inline void OPL_STATUS_SET(FM_OPL *OPL, int flag) {
|
---|
470 | - /* set status flag */
|
---|
471 | - OPL->status |= flag;
|
---|
472 | - if(!(OPL->status & 0x80)) {
|
---|
473 | - if(OPL->status & OPL->statusmask) { /* IRQ on */
|
---|
474 | - OPL->status |= 0x80;
|
---|
475 | - /* callback user interrupt handler (IRQ is OFF to ON) */
|
---|
476 | - if(OPL->IRQHandler)
|
---|
477 | - (OPL->IRQHandler)(OPL->IRQParam,1);
|
---|
478 | - }
|
---|
479 | - }
|
---|
480 | -}
|
---|
481 | -
|
---|
482 | -/* status reset and IRQ handling */
|
---|
483 | -inline void OPL_STATUS_RESET(FM_OPL *OPL, int flag) {
|
---|
484 | - /* reset status flag */
|
---|
485 | - OPL->status &= ~flag;
|
---|
486 | - if((OPL->status & 0x80)) {
|
---|
487 | - if (!(OPL->status & OPL->statusmask)) {
|
---|
488 | - OPL->status &= 0x7f;
|
---|
489 | - /* callback user interrupt handler (IRQ is ON to OFF) */
|
---|
490 | - if(OPL->IRQHandler) (OPL->IRQHandler)(OPL->IRQParam,0);
|
---|
491 | - }
|
---|
492 | - }
|
---|
493 | -}
|
---|
494 | -
|
---|
495 | -/* IRQ mask set */
|
---|
496 | -inline void OPL_STATUSMASK_SET(FM_OPL *OPL, int flag) {
|
---|
497 | - OPL->statusmask = flag;
|
---|
498 | - /* IRQ handling check */
|
---|
499 | - OPL_STATUS_SET(OPL,0);
|
---|
500 | - OPL_STATUS_RESET(OPL,0);
|
---|
501 | -}
|
---|
502 | -
|
---|
503 | -/* ----- key on ----- */
|
---|
504 | -inline void OPL_KEYON(OPL_SLOT *SLOT) {
|
---|
505 | - /* sin wave restart */
|
---|
506 | - SLOT->Cnt = 0;
|
---|
507 | - /* set attack */
|
---|
508 | - SLOT->evm = ENV_MOD_AR;
|
---|
509 | - SLOT->evs = SLOT->evsa;
|
---|
510 | - SLOT->evc = EG_AST;
|
---|
511 | - SLOT->eve = EG_AED;
|
---|
512 | -}
|
---|
513 | -
|
---|
514 | -/* ----- key off ----- */
|
---|
515 | -inline void OPL_KEYOFF(OPL_SLOT *SLOT) {
|
---|
516 | - if( SLOT->evm > ENV_MOD_RR) {
|
---|
517 | - /* set envelope counter from envleope output */
|
---|
518 | -
|
---|
519 | - // WORKAROUND: The Kyra engine does something very strange when
|
---|
520 | - // starting a new song. For each channel:
|
---|
521 | - //
|
---|
522 | - // * The release rate is set to "fastest".
|
---|
523 | - // * Any note is keyed off.
|
---|
524 | - // * A very low-frequency note is keyed on.
|
---|
525 | - //
|
---|
526 | - // Usually, what happens next is that the real notes is keyed
|
---|
527 | - // on immediately, in which case there's no problem.
|
---|
528 | - //
|
---|
529 | - // However, if the note is again keyed off (because the channel
|
---|
530 | - // begins on a rest rather than a note), the envelope counter
|
---|
531 | - // was moved from the very lowest point on the attack curve to
|
---|
532 | - // the very highest point on the release curve.
|
---|
533 | - //
|
---|
534 | - // Again, this might not be a problem, if the release rate is
|
---|
535 | - // still set to "fastest". But in many cases, it had already
|
---|
536 | - // been increased. And, possibly because of inaccuracies in the
|
---|
537 | - // envelope generator, that would cause the note to "fade out"
|
---|
538 | - // for quite a long time.
|
---|
539 | - //
|
---|
540 | - // What we really need is a way to find the correct starting
|
---|
541 | - // point for the envelope counter, and that may be what the
|
---|
542 | - // commented-out line below is meant to do. For now, simply
|
---|
543 | - // handle the pathological case.
|
---|
544 | -
|
---|
545 | - if (SLOT->evm == ENV_MOD_AR && SLOT->evc == EG_AST)
|
---|
546 | - SLOT->evc = EG_DED;
|
---|
547 | - else if( !(SLOT->evc & EG_DST) )
|
---|
548 | - //SLOT->evc = (ENV_CURVE[SLOT->evc>>ENV_BITS]<<ENV_BITS) + EG_DST;
|
---|
549 | - SLOT->evc = EG_DST;
|
---|
550 | - SLOT->eve = EG_DED;
|
---|
551 | - SLOT->evs = SLOT->evsr;
|
---|
552 | - SLOT->evm = ENV_MOD_RR;
|
---|
553 | - }
|
---|
554 | -}
|
---|
555 | -
|
---|
556 | -/* ---------- calcrate Envelope Generator & Phase Generator ---------- */
|
---|
557 | -
|
---|
558 | -/* return : envelope output */
|
---|
559 | -inline uint OPL_CALC_SLOT(OPL_SLOT *SLOT) {
|
---|
560 | - /* calcrate envelope generator */
|
---|
561 | - if((SLOT->evc += SLOT->evs) >= SLOT->eve) {
|
---|
562 | - switch( SLOT->evm ) {
|
---|
563 | - case ENV_MOD_AR: /* ATTACK -> DECAY1 */
|
---|
564 | - /* next DR */
|
---|
565 | - SLOT->evm = ENV_MOD_DR;
|
---|
566 | - SLOT->evc = EG_DST;
|
---|
567 | - SLOT->eve = SLOT->SL;
|
---|
568 | - SLOT->evs = SLOT->evsd;
|
---|
569 | - break;
|
---|
570 | - case ENV_MOD_DR: /* DECAY -> SL or RR */
|
---|
571 | - SLOT->evc = SLOT->SL;
|
---|
572 | - SLOT->eve = EG_DED;
|
---|
573 | - if(SLOT->eg_typ) {
|
---|
574 | - SLOT->evs = 0;
|
---|
575 | - } else {
|
---|
576 | - SLOT->evm = ENV_MOD_RR;
|
---|
577 | - SLOT->evs = SLOT->evsr;
|
---|
578 | - }
|
---|
579 | - break;
|
---|
580 | - case ENV_MOD_RR: /* RR -> OFF */
|
---|
581 | - SLOT->evc = EG_OFF;
|
---|
582 | - SLOT->eve = EG_OFF + 1;
|
---|
583 | - SLOT->evs = 0;
|
---|
584 | - break;
|
---|
585 | - }
|
---|
586 | - }
|
---|
587 | - /* calcrate envelope */
|
---|
588 | - return SLOT->TLL + ENV_CURVE[SLOT->evc>>ENV_BITS] + (SLOT->ams ? ams : 0);
|
---|
589 | -}
|
---|
590 | -
|
---|
591 | -/* set algorythm connection */
|
---|
592 | -static void set_algorythm(OPL_CH *CH) {
|
---|
593 | - int *carrier = &outd[0];
|
---|
594 | - CH->connect1 = CH->CON ? carrier : &feedback2;
|
---|
595 | - CH->connect2 = carrier;
|
---|
596 | -}
|
---|
597 | -
|
---|
598 | -/* ---------- frequency counter for operater update ---------- */
|
---|
599 | -inline void CALC_FCSLOT(OPL_CH *CH, OPL_SLOT *SLOT) {
|
---|
600 | - int ksr;
|
---|
601 | -
|
---|
602 | - /* frequency step counter */
|
---|
603 | - SLOT->Incr = CH->fc * SLOT->mul;
|
---|
604 | - ksr = CH->kcode >> SLOT->KSR;
|
---|
605 | -
|
---|
606 | - if( SLOT->ksr != ksr ) {
|
---|
607 | - SLOT->ksr = ksr;
|
---|
608 | - /* attack , decay rate recalcration */
|
---|
609 | - SLOT->evsa = SLOT->AR[ksr];
|
---|
610 | - SLOT->evsd = SLOT->DR[ksr];
|
---|
611 | - SLOT->evsr = SLOT->RR[ksr];
|
---|
612 | - }
|
---|
613 | - SLOT->TLL = SLOT->TL + (CH->ksl_base>>SLOT->ksl);
|
---|
614 | -}
|
---|
615 | -
|
---|
616 | -/* set multi,am,vib,EG-TYP,KSR,mul */
|
---|
617 | -inline void set_mul(FM_OPL *OPL, int slot, int v) {
|
---|
618 | - OPL_CH *CH = &OPL->P_CH[slot>>1];
|
---|
619 | - OPL_SLOT *SLOT = &CH->SLOT[slot & 1];
|
---|
620 | -
|
---|
621 | - SLOT->mul = MUL_TABLE[v & 0x0f];
|
---|
622 | - SLOT->KSR = (v & 0x10) ? 0 : 2;
|
---|
623 | - SLOT->eg_typ = (v & 0x20) >> 5;
|
---|
624 | - SLOT->vib = (v & 0x40);
|
---|
625 | - SLOT->ams = (v & 0x80);
|
---|
626 | - CALC_FCSLOT(CH, SLOT);
|
---|
627 | -}
|
---|
628 | -
|
---|
629 | -/* set ksl & tl */
|
---|
630 | -inline void set_ksl_tl(FM_OPL *OPL, int slot, int v) {
|
---|
631 | - OPL_CH *CH = &OPL->P_CH[slot>>1];
|
---|
632 | - OPL_SLOT *SLOT = &CH->SLOT[slot & 1];
|
---|
633 | - int ksl = v >> 6; /* 0 / 1.5 / 3 / 6 db/OCT */
|
---|
634 | -
|
---|
635 | - SLOT->ksl = ksl ? 3-ksl : 31;
|
---|
636 | - SLOT->TL = (int)((v & 0x3f) * (0.75 / EG_STEP)); /* 0.75db step */
|
---|
637 | -
|
---|
638 | - if(!(OPL->mode & 0x80)) { /* not CSM latch total level */
|
---|
639 | - SLOT->TLL = SLOT->TL + (CH->ksl_base >> SLOT->ksl);
|
---|
640 | - }
|
---|
641 | -}
|
---|
642 | -
|
---|
643 | -/* set attack rate & decay rate */
|
---|
644 | -inline void set_ar_dr(FM_OPL *OPL, int slot, int v) {
|
---|
645 | - OPL_CH *CH = &OPL->P_CH[slot>>1];
|
---|
646 | - OPL_SLOT *SLOT = &CH->SLOT[slot & 1];
|
---|
647 | - int ar = v >> 4;
|
---|
648 | - int dr = v & 0x0f;
|
---|
649 | -
|
---|
650 | - SLOT->AR = ar ? &OPL->AR_TABLE[ar << 2] : RATE_0;
|
---|
651 | - SLOT->evsa = SLOT->AR[SLOT->ksr];
|
---|
652 | - if(SLOT->evm == ENV_MOD_AR)
|
---|
653 | - SLOT->evs = SLOT->evsa;
|
---|
654 | -
|
---|
655 | - SLOT->DR = dr ? &OPL->DR_TABLE[dr<<2] : RATE_0;
|
---|
656 | - SLOT->evsd = SLOT->DR[SLOT->ksr];
|
---|
657 | - if(SLOT->evm == ENV_MOD_DR)
|
---|
658 | - SLOT->evs = SLOT->evsd;
|
---|
659 | -}
|
---|
660 | +#include "sound/softsynth/adlib/dosbox.h"
|
---|
661 | +#include "sound/softsynth/adlib/mame.h"
|
---|
662 |
|
---|
663 | -/* set sustain level & release rate */
|
---|
664 | -inline void set_sl_rr(FM_OPL *OPL, int slot, int v) {
|
---|
665 | - OPL_CH *CH = &OPL->P_CH[slot>>1];
|
---|
666 | - OPL_SLOT *SLOT = &CH->SLOT[slot & 1];
|
---|
667 | - int sl = v >> 4;
|
---|
668 | - int rr = v & 0x0f;
|
---|
669 | +namespace AdLib {
|
---|
670 |
|
---|
671 | - SLOT->SL = SL_TABLE[sl];
|
---|
672 | - if(SLOT->evm == ENV_MOD_DR)
|
---|
673 | - SLOT->eve = SLOT->SL;
|
---|
674 | - SLOT->RR = &OPL->DR_TABLE[rr<<2];
|
---|
675 | - SLOT->evsr = SLOT->RR[SLOT->ksr];
|
---|
676 | - if(SLOT->evm == ENV_MOD_RR)
|
---|
677 | - SLOT->evs = SLOT->evsr;
|
---|
678 | +AdLib *AdLib::createInstance() {
|
---|
679 | +// return new MAME::AdLib_MAME();
|
---|
680 | + return new DOSBox::AdLib_DOSBox();
|
---|
681 | }
|
---|
682 |
|
---|
683 | -/* operator output calcrator */
|
---|
684 | -
|
---|
685 | -#define OP_OUT(slot,env,con) slot->wavetable[((slot->Cnt + con)>>(24-SIN_ENT_SHIFT)) & (SIN_ENT-1)][env]
|
---|
686 | -/* ---------- calcrate one of channel ---------- */
|
---|
687 | -inline void OPL_CALC_CH(OPL_CH *CH) {
|
---|
688 | - uint env_out;
|
---|
689 | - OPL_SLOT *SLOT;
|
---|
690 | -
|
---|
691 | - feedback2 = 0;
|
---|
692 | - /* SLOT 1 */
|
---|
693 | - SLOT = &CH->SLOT[SLOT1];
|
---|
694 | - env_out=OPL_CALC_SLOT(SLOT);
|
---|
695 | - if(env_out < (uint)(EG_ENT - 1)) {
|
---|
696 | - /* PG */
|
---|
697 | - if(SLOT->vib)
|
---|
698 | - SLOT->Cnt += (SLOT->Incr * vib) >> VIB_RATE_SHIFT;
|
---|
699 | - else
|
---|
700 | - SLOT->Cnt += SLOT->Incr;
|
---|
701 | - /* connection */
|
---|
702 | - if(CH->FB) {
|
---|
703 | - int feedback1 = (CH->op1_out[0] + CH->op1_out[1]) >> CH->FB;
|
---|
704 | - CH->op1_out[1] = CH->op1_out[0];
|
---|
705 | - *CH->connect1 += CH->op1_out[0] = OP_OUT(SLOT, env_out, feedback1);
|
---|
706 | - } else {
|
---|
707 | - *CH->connect1 += OP_OUT(SLOT, env_out, 0);
|
---|
708 | - }
|
---|
709 | - } else {
|
---|
710 | - CH->op1_out[1] = CH->op1_out[0];
|
---|
711 | - CH->op1_out[0] = 0;
|
---|
712 | - }
|
---|
713 | - /* SLOT 2 */
|
---|
714 | - SLOT = &CH->SLOT[SLOT2];
|
---|
715 | - env_out=OPL_CALC_SLOT(SLOT);
|
---|
716 | - if(env_out < (uint)(EG_ENT - 1)) {
|
---|
717 | - /* PG */
|
---|
718 | - if(SLOT->vib)
|
---|
719 | - SLOT->Cnt += (SLOT->Incr * vib) >> VIB_RATE_SHIFT;
|
---|
720 | - else
|
---|
721 | - SLOT->Cnt += SLOT->Incr;
|
---|
722 | - /* connection */
|
---|
723 | - outd[0] += OP_OUT(SLOT, env_out, feedback2);
|
---|
724 | - }
|
---|
725 | -}
|
---|
726 | -
|
---|
727 | -/* ---------- calcrate rythm block ---------- */
|
---|
728 | -#define WHITE_NOISE_db 6.0
|
---|
729 | -inline void OPL_CALC_RH(FM_OPL *OPL, OPL_CH *CH) {
|
---|
730 | - uint env_tam, env_sd, env_top, env_hh;
|
---|
731 | - // This code used to do int(OPL->rnd.getRandomBit() * (WHITE_NOISE_db / EG_STEP)),
|
---|
732 | - // but EG_STEP = 96.0/EG_ENT, and WHITE_NOISE_db=6.0. So, that's equivalent to
|
---|
733 | - // int(OPL->rnd.getRandomBit() * EG_ENT/16). We know that EG_ENT is 4096, or 1024,
|
---|
734 | - // or 128, so we can safely avoid any FP ops.
|
---|
735 | - int whitenoise = OPL->rnd.getRandomBit() * (EG_ENT>>4);
|
---|
736 | -
|
---|
737 | - int tone8;
|
---|
738 | -
|
---|
739 | - OPL_SLOT *SLOT;
|
---|
740 | - int env_out;
|
---|
741 | -
|
---|
742 | - /* BD : same as FM serial mode and output level is large */
|
---|
743 | - feedback2 = 0;
|
---|
744 | - /* SLOT 1 */
|
---|
745 | - SLOT = &CH[6].SLOT[SLOT1];
|
---|
746 | - env_out = OPL_CALC_SLOT(SLOT);
|
---|
747 | - if(env_out < EG_ENT-1) {
|
---|
748 | - /* PG */
|
---|
749 | - if(SLOT->vib)
|
---|
750 | - SLOT->Cnt += (SLOT->Incr * vib) >> VIB_RATE_SHIFT;
|
---|
751 | - else
|
---|
752 | - SLOT->Cnt += SLOT->Incr;
|
---|
753 | - /* connection */
|
---|
754 | - if(CH[6].FB) {
|
---|
755 | - int feedback1 = (CH[6].op1_out[0] + CH[6].op1_out[1]) >> CH[6].FB;
|
---|
756 | - CH[6].op1_out[1] = CH[6].op1_out[0];
|
---|
757 | - feedback2 = CH[6].op1_out[0] = OP_OUT(SLOT, env_out, feedback1);
|
---|
758 | - }
|
---|
759 | - else {
|
---|
760 | - feedback2 = OP_OUT(SLOT, env_out, 0);
|
---|
761 | - }
|
---|
762 | - } else {
|
---|
763 | - feedback2 = 0;
|
---|
764 | - CH[6].op1_out[1] = CH[6].op1_out[0];
|
---|
765 | - CH[6].op1_out[0] = 0;
|
---|
766 | - }
|
---|
767 | - /* SLOT 2 */
|
---|
768 | - SLOT = &CH[6].SLOT[SLOT2];
|
---|
769 | - env_out = OPL_CALC_SLOT(SLOT);
|
---|
770 | - if(env_out < EG_ENT-1) {
|
---|
771 | - /* PG */
|
---|
772 | - if(SLOT->vib)
|
---|
773 | - SLOT->Cnt += (SLOT->Incr * vib) >> VIB_RATE_SHIFT;
|
---|
774 | - else
|
---|
775 | - SLOT->Cnt += SLOT->Incr;
|
---|
776 | - /* connection */
|
---|
777 | - outd[0] += OP_OUT(SLOT, env_out, feedback2) * 2;
|
---|
778 | - }
|
---|
779 | -
|
---|
780 | - // SD (17) = mul14[fnum7] + white noise
|
---|
781 | - // TAM (15) = mul15[fnum8]
|
---|
782 | - // TOP (18) = fnum6(mul18[fnum8]+whitenoise)
|
---|
783 | - // HH (14) = fnum7(mul18[fnum8]+whitenoise) + white noise
|
---|
784 | - env_sd = OPL_CALC_SLOT(SLOT7_2) + whitenoise;
|
---|
785 | - env_tam =OPL_CALC_SLOT(SLOT8_1);
|
---|
786 | - env_top = OPL_CALC_SLOT(SLOT8_2);
|
---|
787 | - env_hh = OPL_CALC_SLOT(SLOT7_1) + whitenoise;
|
---|
788 | -
|
---|
789 | - /* PG */
|
---|
790 | - if(SLOT7_1->vib)
|
---|
791 | - SLOT7_1->Cnt += (SLOT7_1->Incr * vib) >> (VIB_RATE_SHIFT-1);
|
---|
792 | - else
|
---|
793 | - SLOT7_1->Cnt += 2 * SLOT7_1->Incr;
|
---|
794 | - if(SLOT7_2->vib)
|
---|
795 | - SLOT7_2->Cnt += (CH[7].fc * vib) >> (VIB_RATE_SHIFT-3);
|
---|
796 | - else
|
---|
797 | - SLOT7_2->Cnt += (CH[7].fc * 8);
|
---|
798 | - if(SLOT8_1->vib)
|
---|
799 | - SLOT8_1->Cnt += (SLOT8_1->Incr * vib) >> VIB_RATE_SHIFT;
|
---|
800 | - else
|
---|
801 | - SLOT8_1->Cnt += SLOT8_1->Incr;
|
---|
802 | - if(SLOT8_2->vib)
|
---|
803 | - SLOT8_2->Cnt += ((CH[8].fc * 3) * vib) >> (VIB_RATE_SHIFT-4);
|
---|
804 | - else
|
---|
805 | - SLOT8_2->Cnt += (CH[8].fc * 48);
|
---|
806 | -
|
---|
807 | - tone8 = OP_OUT(SLOT8_2,whitenoise,0 );
|
---|
808 | -
|
---|
809 | - /* SD */
|
---|
810 | - if(env_sd < (uint)(EG_ENT - 1))
|
---|
811 | - outd[0] += OP_OUT(SLOT7_1, env_sd, 0) * 8;
|
---|
812 | - /* TAM */
|
---|
813 | - if(env_tam < (uint)(EG_ENT - 1))
|
---|
814 | - outd[0] += OP_OUT(SLOT8_1, env_tam, 0) * 2;
|
---|
815 | - /* TOP-CY */
|
---|
816 | - if(env_top < (uint)(EG_ENT - 1))
|
---|
817 | - outd[0] += OP_OUT(SLOT7_2, env_top, tone8) * 2;
|
---|
818 | - /* HH */
|
---|
819 | - if(env_hh < (uint)(EG_ENT-1))
|
---|
820 | - outd[0] += OP_OUT(SLOT7_2, env_hh, tone8) * 2;
|
---|
821 | -}
|
---|
822 | -
|
---|
823 | -/* ----------- initialize time tabls ----------- */
|
---|
824 | -static void init_timetables(FM_OPL *OPL, int ARRATE, int DRRATE) {
|
---|
825 | - int i;
|
---|
826 | - double rate;
|
---|
827 | -
|
---|
828 | - /* make attack rate & decay rate tables */
|
---|
829 | - for (i = 0; i < 4; i++)
|
---|
830 | - OPL->AR_TABLE[i] = OPL->DR_TABLE[i] = 0;
|
---|
831 | - for (i = 4; i <= 60; i++) {
|
---|
832 | - rate = OPL->freqbase; /* frequency rate */
|
---|
833 | - if(i < 60)
|
---|
834 | - rate *= 1.0 + (i & 3) * 0.25; /* b0-1 : x1 , x1.25 , x1.5 , x1.75 */
|
---|
835 | - rate *= 1 << ((i >> 2) - 1); /* b2-5 : shift bit */
|
---|
836 | - rate *= (double)(EG_ENT << ENV_BITS);
|
---|
837 | - OPL->AR_TABLE[i] = (int)(rate / ARRATE);
|
---|
838 | - OPL->DR_TABLE[i] = (int)(rate / DRRATE);
|
---|
839 | - }
|
---|
840 | - for (i = 60; i < 76; i++) {
|
---|
841 | - OPL->AR_TABLE[i] = EG_AED-1;
|
---|
842 | - OPL->DR_TABLE[i] = OPL->DR_TABLE[60];
|
---|
843 | - }
|
---|
844 | -}
|
---|
845 | -
|
---|
846 | -/* ---------- generic table initialize ---------- */
|
---|
847 | -static int OPLOpenTable(void) {
|
---|
848 | - int s,t;
|
---|
849 | - double rate;
|
---|
850 | - int i,j;
|
---|
851 | - double pom;
|
---|
852 | -
|
---|
853 | -#ifdef __DS__
|
---|
854 | - DS::fastRamReset();
|
---|
855 | -
|
---|
856 | - TL_TABLE = (int *) DS::fastRamAlloc(TL_MAX * 2 * sizeof(int *));
|
---|
857 | - SIN_TABLE = (int **) DS::fastRamAlloc(SIN_ENT * 4 * sizeof(int *));
|
---|
858 | -#else
|
---|
859 | -
|
---|
860 | - /* allocate dynamic tables */
|
---|
861 | - if((TL_TABLE = (int *)malloc(TL_MAX * 2 * sizeof(int))) == NULL)
|
---|
862 | - return 0;
|
---|
863 | -
|
---|
864 | - if((SIN_TABLE = (int **)malloc(SIN_ENT * 4 * sizeof(int *))) == NULL) {
|
---|
865 | - free(TL_TABLE);
|
---|
866 | - return 0;
|
---|
867 | - }
|
---|
868 | -#endif
|
---|
869 | -
|
---|
870 | - if((AMS_TABLE = (int *)malloc(AMS_ENT * 2 * sizeof(int))) == NULL) {
|
---|
871 | - free(TL_TABLE);
|
---|
872 | - free(SIN_TABLE);
|
---|
873 | - return 0;
|
---|
874 | - }
|
---|
875 | -
|
---|
876 | - if((VIB_TABLE = (int *)malloc(VIB_ENT * 2 * sizeof(int))) == NULL) {
|
---|
877 | - free(TL_TABLE);
|
---|
878 | - free(SIN_TABLE);
|
---|
879 | - free(AMS_TABLE);
|
---|
880 | - return 0;
|
---|
881 | - }
|
---|
882 | - /* make total level table */
|
---|
883 | - for (t = 0; t < EG_ENT - 1 ; t++) {
|
---|
884 | - rate = ((1 << TL_BITS) - 1) / pow(10.0, EG_STEP * t / 20); /* dB -> voltage */
|
---|
885 | - TL_TABLE[ t] = (int)rate;
|
---|
886 | - TL_TABLE[TL_MAX + t] = -TL_TABLE[t];
|
---|
887 | - }
|
---|
888 | - /* fill volume off area */
|
---|
889 | - for (t = EG_ENT - 1; t < TL_MAX; t++) {
|
---|
890 | - TL_TABLE[t] = TL_TABLE[TL_MAX + t] = 0;
|
---|
891 | - }
|
---|
892 | -
|
---|
893 | - /* make sinwave table (total level offet) */
|
---|
894 | - /* degree 0 = degree 180 = off */
|
---|
895 | - SIN_TABLE[0] = SIN_TABLE[SIN_ENT /2 ] = &TL_TABLE[EG_ENT - 1];
|
---|
896 | - for (s = 1;s <= SIN_ENT / 4; s++) {
|
---|
897 | - pom = sin(2 * PI * s / SIN_ENT); /* sin */
|
---|
898 | - pom = 20 * log10(1 / pom); /* decibel */
|
---|
899 | - j = int(pom / EG_STEP); /* TL_TABLE steps */
|
---|
900 | -
|
---|
901 | - /* degree 0 - 90 , degree 180 - 90 : plus section */
|
---|
902 | - SIN_TABLE[ s] = SIN_TABLE[SIN_ENT / 2 - s] = &TL_TABLE[j];
|
---|
903 | - /* degree 180 - 270 , degree 360 - 270 : minus section */
|
---|
904 | - SIN_TABLE[SIN_ENT / 2 + s] = SIN_TABLE[SIN_ENT - s] = &TL_TABLE[TL_MAX + j];
|
---|
905 | - }
|
---|
906 | - for (s = 0;s < SIN_ENT; s++) {
|
---|
907 | - SIN_TABLE[SIN_ENT * 1 + s] = s < (SIN_ENT / 2) ? SIN_TABLE[s] : &TL_TABLE[EG_ENT];
|
---|
908 | - SIN_TABLE[SIN_ENT * 2 + s] = SIN_TABLE[s % (SIN_ENT / 2)];
|
---|
909 | - SIN_TABLE[SIN_ENT * 3 + s] = (s / (SIN_ENT / 4)) & 1 ? &TL_TABLE[EG_ENT] : SIN_TABLE[SIN_ENT * 2 + s];
|
---|
910 | - }
|
---|
911 | -
|
---|
912 | -
|
---|
913 | - ENV_CURVE = (int *)malloc(sizeof(int) * (2*EG_ENT+1));
|
---|
914 | -
|
---|
915 | - /* envelope counter -> envelope output table */
|
---|
916 | - for (i=0; i < EG_ENT; i++) {
|
---|
917 | - /* ATTACK curve */
|
---|
918 | - pom = pow(((double)(EG_ENT - 1 - i) / EG_ENT), 8) * EG_ENT;
|
---|
919 | - /* if( pom >= EG_ENT ) pom = EG_ENT-1; */
|
---|
920 | - ENV_CURVE[i] = (int)pom;
|
---|
921 | - /* DECAY ,RELEASE curve */
|
---|
922 | - ENV_CURVE[(EG_DST >> ENV_BITS) + i]= i;
|
---|
923 | - }
|
---|
924 | - /* off */
|
---|
925 | - ENV_CURVE[EG_OFF >> ENV_BITS]= EG_ENT - 1;
|
---|
926 | - /* make LFO ams table */
|
---|
927 | - for (i=0; i < AMS_ENT; i++) {
|
---|
928 | - pom = (1.0 + sin(2 * PI * i / AMS_ENT)) / 2; /* sin */
|
---|
929 | - AMS_TABLE[i] = (int)((1.0 / EG_STEP) * pom); /* 1dB */
|
---|
930 | - AMS_TABLE[AMS_ENT + i] = (int)((4.8 / EG_STEP) * pom); /* 4.8dB */
|
---|
931 | - }
|
---|
932 | - /* make LFO vibrate table */
|
---|
933 | - for (i=0; i < VIB_ENT; i++) {
|
---|
934 | - /* 100cent = 1seminote = 6% ?? */
|
---|
935 | - pom = (double)VIB_RATE * 0.06 * sin(2 * PI * i / VIB_ENT); /* +-100sect step */
|
---|
936 | - VIB_TABLE[i] = (int)(VIB_RATE + (pom * 0.07)); /* +- 7cent */
|
---|
937 | - VIB_TABLE[VIB_ENT + i] = (int)(VIB_RATE + (pom * 0.14)); /* +-14cent */
|
---|
938 | - }
|
---|
939 | - return 1;
|
---|
940 | -}
|
---|
941 | -
|
---|
942 | -static void OPLCloseTable(void) {
|
---|
943 | - free(TL_TABLE);
|
---|
944 | - free(SIN_TABLE);
|
---|
945 | - free(AMS_TABLE);
|
---|
946 | - free(VIB_TABLE);
|
---|
947 | - free(ENV_CURVE);
|
---|
948 | -}
|
---|
949 | -
|
---|
950 | -/* CSM Key Controll */
|
---|
951 | -inline void CSMKeyControll(OPL_CH *CH) {
|
---|
952 | - OPL_SLOT *slot1 = &CH->SLOT[SLOT1];
|
---|
953 | - OPL_SLOT *slot2 = &CH->SLOT[SLOT2];
|
---|
954 | - /* all key off */
|
---|
955 | - OPL_KEYOFF(slot1);
|
---|
956 | - OPL_KEYOFF(slot2);
|
---|
957 | - /* total level latch */
|
---|
958 | - slot1->TLL = slot1->TL + (CH->ksl_base>>slot1->ksl);
|
---|
959 | - slot1->TLL = slot1->TL + (CH->ksl_base>>slot1->ksl);
|
---|
960 | - /* key on */
|
---|
961 | - CH->op1_out[0] = CH->op1_out[1] = 0;
|
---|
962 | - OPL_KEYON(slot1);
|
---|
963 | - OPL_KEYON(slot2);
|
---|
964 | -}
|
---|
965 | +} // end of namespace AdLib
|
---|
966 |
|
---|
967 | -/* ---------- opl initialize ---------- */
|
---|
968 | -static void OPL_initalize(FM_OPL *OPL) {
|
---|
969 | - int fn;
|
---|
970 | -
|
---|
971 | - /* frequency base */
|
---|
972 | - OPL->freqbase = (OPL->rate) ? ((double)OPL->clock / OPL->rate) / 72 : 0;
|
---|
973 | - /* Timer base time */
|
---|
974 | - OPL->TimerBase = 1.0/((double)OPL->clock / 72.0 );
|
---|
975 | - /* make time tables */
|
---|
976 | - init_timetables(OPL, OPL_ARRATE, OPL_DRRATE);
|
---|
977 | - /* make fnumber -> increment counter table */
|
---|
978 | - for( fn=0; fn < 1024; fn++) {
|
---|
979 | - OPL->FN_TABLE[fn] = (uint)(OPL->freqbase * fn * FREQ_RATE * (1<<7) / 2);
|
---|
980 | - }
|
---|
981 | - /* LFO freq.table */
|
---|
982 | - OPL->amsIncr = (int)(OPL->rate ? (double)AMS_ENT * (1 << AMS_SHIFT) / OPL->rate * 3.7 * ((double)OPL->clock/3600000) : 0);
|
---|
983 | - OPL->vibIncr = (int)(OPL->rate ? (double)VIB_ENT * (1 << VIB_SHIFT) / OPL->rate * 6.4 * ((double)OPL->clock/3600000) : 0);
|
---|
984 | -}
|
---|
985 | -
|
---|
986 | -/* ---------- write a OPL registers ---------- */
|
---|
987 | -void OPLWriteReg(FM_OPL *OPL, int r, int v) {
|
---|
988 | - OPL_CH *CH;
|
---|
989 | - int slot;
|
---|
990 | - uint block_fnum;
|
---|
991 | -
|
---|
992 | - switch(r & 0xe0) {
|
---|
993 | - case 0x00: /* 00-1f:controll */
|
---|
994 | - switch(r & 0x1f) {
|
---|
995 | - case 0x01:
|
---|
996 | - /* wave selector enable */
|
---|
997 | - if(OPL->type&OPL_TYPE_WAVESEL) {
|
---|
998 | - OPL->wavesel = v & 0x20;
|
---|
999 | - if(!OPL->wavesel) {
|
---|
1000 | - /* preset compatible mode */
|
---|
1001 | - int c;
|
---|
1002 | - for(c=0; c<OPL->max_ch; c++) {
|
---|
1003 | - OPL->P_CH[c].SLOT[SLOT1].wavetable = &SIN_TABLE[0];
|
---|
1004 | - OPL->P_CH[c].SLOT[SLOT2].wavetable = &SIN_TABLE[0];
|
---|
1005 | - }
|
---|
1006 | - }
|
---|
1007 | - }
|
---|
1008 | - return;
|
---|
1009 | - case 0x02: /* Timer 1 */
|
---|
1010 | - OPL->T[0] = (256-v) * 4;
|
---|
1011 | - break;
|
---|
1012 | - case 0x03: /* Timer 2 */
|
---|
1013 | - OPL->T[1] = (256-v) * 16;
|
---|
1014 | - return;
|
---|
1015 | - case 0x04: /* IRQ clear / mask and Timer enable */
|
---|
1016 | - if(v & 0x80) { /* IRQ flag clear */
|
---|
1017 | - OPL_STATUS_RESET(OPL, 0x7f);
|
---|
1018 | - } else { /* set IRQ mask ,timer enable*/
|
---|
1019 | - uint8 st1 = v & 1;
|
---|
1020 | - uint8 st2 = (v >> 1) & 1;
|
---|
1021 | - /* IRQRST,T1MSK,t2MSK,EOSMSK,BRMSK,x,ST2,ST1 */
|
---|
1022 | - OPL_STATUS_RESET(OPL, v & 0x78);
|
---|
1023 | - OPL_STATUSMASK_SET(OPL,((~v) & 0x78) | 0x01);
|
---|
1024 | - /* timer 2 */
|
---|
1025 | - if(OPL->st[1] != st2) {
|
---|
1026 | - double interval = st2 ? (double)OPL->T[1] * OPL->TimerBase : 0.0;
|
---|
1027 | - OPL->st[1] = st2;
|
---|
1028 | - if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam + 1, interval);
|
---|
1029 | - }
|
---|
1030 | - /* timer 1 */
|
---|
1031 | - if(OPL->st[0] != st1) {
|
---|
1032 | - double interval = st1 ? (double)OPL->T[0] * OPL->TimerBase : 0.0;
|
---|
1033 | - OPL->st[0] = st1;
|
---|
1034 | - if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam + 0, interval);
|
---|
1035 | - }
|
---|
1036 | - }
|
---|
1037 | - return;
|
---|
1038 | - }
|
---|
1039 | - break;
|
---|
1040 | - case 0x20: /* am,vib,ksr,eg type,mul */
|
---|
1041 | - slot = slot_array[r&0x1f];
|
---|
1042 | - if(slot == -1)
|
---|
1043 | - return;
|
---|
1044 | - set_mul(OPL,slot,v);
|
---|
1045 | - return;
|
---|
1046 | - case 0x40:
|
---|
1047 | - slot = slot_array[r&0x1f];
|
---|
1048 | - if(slot == -1)
|
---|
1049 | - return;
|
---|
1050 | - set_ksl_tl(OPL,slot,v);
|
---|
1051 | - return;
|
---|
1052 | - case 0x60:
|
---|
1053 | - slot = slot_array[r&0x1f];
|
---|
1054 | - if(slot == -1)
|
---|
1055 | - return;
|
---|
1056 | - set_ar_dr(OPL,slot,v);
|
---|
1057 | - return;
|
---|
1058 | - case 0x80:
|
---|
1059 | - slot = slot_array[r&0x1f];
|
---|
1060 | - if(slot == -1)
|
---|
1061 | - return;
|
---|
1062 | - set_sl_rr(OPL,slot,v);
|
---|
1063 | - return;
|
---|
1064 | - case 0xa0:
|
---|
1065 | - switch(r) {
|
---|
1066 | - case 0xbd:
|
---|
1067 | - /* amsep,vibdep,r,bd,sd,tom,tc,hh */
|
---|
1068 | - {
|
---|
1069 | - uint8 rkey = OPL->rythm ^ v;
|
---|
1070 | - OPL->ams_table = &AMS_TABLE[v & 0x80 ? AMS_ENT : 0];
|
---|
1071 | - OPL->vib_table = &VIB_TABLE[v & 0x40 ? VIB_ENT : 0];
|
---|
1072 | - OPL->rythm = v & 0x3f;
|
---|
1073 | - if(OPL->rythm & 0x20) {
|
---|
1074 | - /* BD key on/off */
|
---|
1075 | - if(rkey & 0x10) {
|
---|
1076 | - if(v & 0x10) {
|
---|
1077 | - OPL->P_CH[6].op1_out[0] = OPL->P_CH[6].op1_out[1] = 0;
|
---|
1078 | - OPL_KEYON(&OPL->P_CH[6].SLOT[SLOT1]);
|
---|
1079 | - OPL_KEYON(&OPL->P_CH[6].SLOT[SLOT2]);
|
---|
1080 | - } else {
|
---|
1081 | - OPL_KEYOFF(&OPL->P_CH[6].SLOT[SLOT1]);
|
---|
1082 | - OPL_KEYOFF(&OPL->P_CH[6].SLOT[SLOT2]);
|
---|
1083 | - }
|
---|
1084 | - }
|
---|
1085 | - /* SD key on/off */
|
---|
1086 | - if(rkey & 0x08) {
|
---|
1087 | - if(v & 0x08)
|
---|
1088 | - OPL_KEYON(&OPL->P_CH[7].SLOT[SLOT2]);
|
---|
1089 | - else
|
---|
1090 | - OPL_KEYOFF(&OPL->P_CH[7].SLOT[SLOT2]);
|
---|
1091 | - }/* TAM key on/off */
|
---|
1092 | - if(rkey & 0x04) {
|
---|
1093 | - if(v & 0x04)
|
---|
1094 | - OPL_KEYON(&OPL->P_CH[8].SLOT[SLOT1]);
|
---|
1095 | - else
|
---|
1096 | - OPL_KEYOFF(&OPL->P_CH[8].SLOT[SLOT1]);
|
---|
1097 | - }
|
---|
1098 | - /* TOP-CY key on/off */
|
---|
1099 | - if(rkey & 0x02) {
|
---|
1100 | - if(v & 0x02)
|
---|
1101 | - OPL_KEYON(&OPL->P_CH[8].SLOT[SLOT2]);
|
---|
1102 | - else
|
---|
1103 | - OPL_KEYOFF(&OPL->P_CH[8].SLOT[SLOT2]);
|
---|
1104 | - }
|
---|
1105 | - /* HH key on/off */
|
---|
1106 | - if(rkey & 0x01) {
|
---|
1107 | - if(v & 0x01)
|
---|
1108 | - OPL_KEYON(&OPL->P_CH[7].SLOT[SLOT1]);
|
---|
1109 | - else
|
---|
1110 | - OPL_KEYOFF(&OPL->P_CH[7].SLOT[SLOT1]);
|
---|
1111 | - }
|
---|
1112 | - }
|
---|
1113 | - }
|
---|
1114 | - return;
|
---|
1115 | -
|
---|
1116 | - default:
|
---|
1117 | - break;
|
---|
1118 | - }
|
---|
1119 | - /* keyon,block,fnum */
|
---|
1120 | - if((r & 0x0f) > 8)
|
---|
1121 | - return;
|
---|
1122 | - CH = &OPL->P_CH[r & 0x0f];
|
---|
1123 | - if(!(r&0x10)) { /* a0-a8 */
|
---|
1124 | - block_fnum = (CH->block_fnum & 0x1f00) | v;
|
---|
1125 | - } else { /* b0-b8 */
|
---|
1126 | - int keyon = (v >> 5) & 1;
|
---|
1127 | - block_fnum = ((v & 0x1f) << 8) | (CH->block_fnum & 0xff);
|
---|
1128 | - if(CH->keyon != keyon) {
|
---|
1129 | - if((CH->keyon=keyon)) {
|
---|
1130 | - CH->op1_out[0] = CH->op1_out[1] = 0;
|
---|
1131 | - OPL_KEYON(&CH->SLOT[SLOT1]);
|
---|
1132 | - OPL_KEYON(&CH->SLOT[SLOT2]);
|
---|
1133 | - } else {
|
---|
1134 | - OPL_KEYOFF(&CH->SLOT[SLOT1]);
|
---|
1135 | - OPL_KEYOFF(&CH->SLOT[SLOT2]);
|
---|
1136 | - }
|
---|
1137 | - }
|
---|
1138 | - }
|
---|
1139 | - /* update */
|
---|
1140 | - if(CH->block_fnum != block_fnum) {
|
---|
1141 | - int blockRv = 7 - (block_fnum >> 10);
|
---|
1142 | - int fnum = block_fnum & 0x3ff;
|
---|
1143 | - CH->block_fnum = block_fnum;
|
---|
1144 | - CH->ksl_base = KSL_TABLE[block_fnum >> 6];
|
---|
1145 | - CH->fc = OPL->FN_TABLE[fnum] >> blockRv;
|
---|
1146 | - CH->kcode = CH->block_fnum >> 9;
|
---|
1147 | - if((OPL->mode & 0x40) && CH->block_fnum & 0x100)
|
---|
1148 | - CH->kcode |=1;
|
---|
1149 | - CALC_FCSLOT(CH,&CH->SLOT[SLOT1]);
|
---|
1150 | - CALC_FCSLOT(CH,&CH->SLOT[SLOT2]);
|
---|
1151 | - }
|
---|
1152 | - return;
|
---|
1153 | - case 0xc0:
|
---|
1154 | - /* FB,C */
|
---|
1155 | - if((r & 0x0f) > 8)
|
---|
1156 | - return;
|
---|
1157 | - CH = &OPL->P_CH[r&0x0f];
|
---|
1158 | - {
|
---|
1159 | - int feedback = (v >> 1) & 7;
|
---|
1160 | - CH->FB = feedback ? (8 + 1) - feedback : 0;
|
---|
1161 | - CH->CON = v & 1;
|
---|
1162 | - set_algorythm(CH);
|
---|
1163 | - }
|
---|
1164 | - return;
|
---|
1165 | - case 0xe0: /* wave type */
|
---|
1166 | - slot = slot_array[r & 0x1f];
|
---|
1167 | - if(slot == -1)
|
---|
1168 | - return;
|
---|
1169 | - CH = &OPL->P_CH[slot>>1];
|
---|
1170 | - if(OPL->wavesel) {
|
---|
1171 | - CH->SLOT[slot&1].wavetable = &SIN_TABLE[(v & 0x03) * SIN_ENT];
|
---|
1172 | - }
|
---|
1173 | - return;
|
---|
1174 | - }
|
---|
1175 | -}
|
---|
1176 | -
|
---|
1177 | -/* lock/unlock for common table */
|
---|
1178 | -static int OPL_LockTable(void) {
|
---|
1179 | - num_lock++;
|
---|
1180 | - if(num_lock>1)
|
---|
1181 | - return 0;
|
---|
1182 | - /* first time */
|
---|
1183 | - cur_chip = NULL;
|
---|
1184 | - /* allocate total level table (128kb space) */
|
---|
1185 | - if(!OPLOpenTable()) {
|
---|
1186 | - num_lock--;
|
---|
1187 | - return -1;
|
---|
1188 | - }
|
---|
1189 | - return 0;
|
---|
1190 | -}
|
---|
1191 | -
|
---|
1192 | -static void OPL_UnLockTable(void) {
|
---|
1193 | - if(num_lock)
|
---|
1194 | - num_lock--;
|
---|
1195 | - if(num_lock)
|
---|
1196 | - return;
|
---|
1197 | - /* last time */
|
---|
1198 | - cur_chip = NULL;
|
---|
1199 | - OPLCloseTable();
|
---|
1200 | -}
|
---|
1201 | -
|
---|
1202 | -/*******************************************************************************/
|
---|
1203 | -/* YM3812 local section */
|
---|
1204 | -/*******************************************************************************/
|
---|
1205 | -
|
---|
1206 | -/* ---------- update one of chip ----------- */
|
---|
1207 | -void YM3812UpdateOne(FM_OPL *OPL, int16 *buffer, int length, int interleave) {
|
---|
1208 | - int i;
|
---|
1209 | - int data;
|
---|
1210 | - int16 *buf = buffer;
|
---|
1211 | - uint amsCnt = OPL->amsCnt;
|
---|
1212 | - uint vibCnt = OPL->vibCnt;
|
---|
1213 | - uint8 rythm = OPL->rythm & 0x20;
|
---|
1214 | - OPL_CH *CH, *R_CH;
|
---|
1215 | -
|
---|
1216 | -
|
---|
1217 | - if((void *)OPL != cur_chip) {
|
---|
1218 | - cur_chip = (void *)OPL;
|
---|
1219 | - /* channel pointers */
|
---|
1220 | - S_CH = OPL->P_CH;
|
---|
1221 | - E_CH = &S_CH[9];
|
---|
1222 | - /* rythm slot */
|
---|
1223 | - SLOT7_1 = &S_CH[7].SLOT[SLOT1];
|
---|
1224 | - SLOT7_2 = &S_CH[7].SLOT[SLOT2];
|
---|
1225 | - SLOT8_1 = &S_CH[8].SLOT[SLOT1];
|
---|
1226 | - SLOT8_2 = &S_CH[8].SLOT[SLOT2];
|
---|
1227 | - /* LFO state */
|
---|
1228 | - amsIncr = OPL->amsIncr;
|
---|
1229 | - vibIncr = OPL->vibIncr;
|
---|
1230 | - ams_table = OPL->ams_table;
|
---|
1231 | - vib_table = OPL->vib_table;
|
---|
1232 | - }
|
---|
1233 | - R_CH = rythm ? &S_CH[6] : E_CH;
|
---|
1234 | - for(i = 0; i < length; i++) {
|
---|
1235 | - /* channel A channel B channel C */
|
---|
1236 | - /* LFO */
|
---|
1237 | - ams = ams_table[(amsCnt += amsIncr) >> AMS_SHIFT];
|
---|
1238 | - vib = vib_table[(vibCnt += vibIncr) >> VIB_SHIFT];
|
---|
1239 | - outd[0] = 0;
|
---|
1240 | - /* FM part */
|
---|
1241 | - for(CH=S_CH; CH < R_CH; CH++)
|
---|
1242 | - OPL_CALC_CH(CH);
|
---|
1243 | - /* Rythn part */
|
---|
1244 | - if(rythm)
|
---|
1245 | - OPL_CALC_RH(OPL, S_CH);
|
---|
1246 | - /* limit check */
|
---|
1247 | - data = CLIP(outd[0], OPL_MINOUT, OPL_MAXOUT);
|
---|
1248 | - /* store to sound buffer */
|
---|
1249 | - buf[i << interleave] = data >> OPL_OUTSB;
|
---|
1250 | - }
|
---|
1251 | -
|
---|
1252 | - OPL->amsCnt = amsCnt;
|
---|
1253 | - OPL->vibCnt = vibCnt;
|
---|
1254 | -}
|
---|
1255 | -
|
---|
1256 | -/* ---------- reset a chip ---------- */
|
---|
1257 | -void OPLResetChip(FM_OPL *OPL) {
|
---|
1258 | - int c,s;
|
---|
1259 | - int i;
|
---|
1260 | -
|
---|
1261 | - /* reset chip */
|
---|
1262 | - OPL->mode = 0; /* normal mode */
|
---|
1263 | - OPL_STATUS_RESET(OPL, 0x7f);
|
---|
1264 | - /* reset with register write */
|
---|
1265 | - OPLWriteReg(OPL, 0x01,0); /* wabesel disable */
|
---|
1266 | - OPLWriteReg(OPL, 0x02,0); /* Timer1 */
|
---|
1267 | - OPLWriteReg(OPL, 0x03,0); /* Timer2 */
|
---|
1268 | - OPLWriteReg(OPL, 0x04,0); /* IRQ mask clear */
|
---|
1269 | - for(i = 0xff; i >= 0x20; i--)
|
---|
1270 | - OPLWriteReg(OPL,i,0);
|
---|
1271 | - /* reset OPerator parameter */
|
---|
1272 | - for(c = 0; c < OPL->max_ch ;c++ ) {
|
---|
1273 | - OPL_CH *CH = &OPL->P_CH[c];
|
---|
1274 | - /* OPL->P_CH[c].PAN = OPN_CENTER; */
|
---|
1275 | - for(s = 0; s < 2; s++ ) {
|
---|
1276 | - /* wave table */
|
---|
1277 | - CH->SLOT[s].wavetable = &SIN_TABLE[0];
|
---|
1278 | - /* CH->SLOT[s].evm = ENV_MOD_RR; */
|
---|
1279 | - CH->SLOT[s].evc = EG_OFF;
|
---|
1280 | - CH->SLOT[s].eve = EG_OFF + 1;
|
---|
1281 | - CH->SLOT[s].evs = 0;
|
---|
1282 | - }
|
---|
1283 | - }
|
---|
1284 | -}
|
---|
1285 | -
|
---|
1286 | -/* ---------- Create a virtual YM3812 ---------- */
|
---|
1287 | -/* 'rate' is sampling rate and 'bufsiz' is the size of the */
|
---|
1288 | -FM_OPL *OPLCreate(int type, int clock, int rate) {
|
---|
1289 | - char *ptr;
|
---|
1290 | - FM_OPL *OPL;
|
---|
1291 | - int state_size;
|
---|
1292 | - int max_ch = 9; /* normaly 9 channels */
|
---|
1293 | -
|
---|
1294 | - if( OPL_LockTable() == -1)
|
---|
1295 | - return NULL;
|
---|
1296 | - /* allocate OPL state space */
|
---|
1297 | - state_size = sizeof(FM_OPL);
|
---|
1298 | - state_size += sizeof(OPL_CH) * max_ch;
|
---|
1299 | -
|
---|
1300 | - /* allocate memory block */
|
---|
1301 | - ptr = (char *)calloc(state_size, 1);
|
---|
1302 | - if(ptr == NULL)
|
---|
1303 | - return NULL;
|
---|
1304 | -
|
---|
1305 | - /* clear */
|
---|
1306 | - memset(ptr, 0, state_size);
|
---|
1307 | - OPL = (FM_OPL *)ptr; ptr += sizeof(FM_OPL);
|
---|
1308 | - OPL->P_CH = (OPL_CH *)ptr; ptr += sizeof(OPL_CH) * max_ch;
|
---|
1309 | -
|
---|
1310 | - /* set channel state pointer */
|
---|
1311 | - OPL->type = type;
|
---|
1312 | - OPL->clock = clock;
|
---|
1313 | - OPL->rate = rate;
|
---|
1314 | - OPL->max_ch = max_ch;
|
---|
1315 | -
|
---|
1316 | - /* init grobal tables */
|
---|
1317 | - OPL_initalize(OPL);
|
---|
1318 | -
|
---|
1319 | - /* reset chip */
|
---|
1320 | - OPLResetChip(OPL);
|
---|
1321 | - return OPL;
|
---|
1322 | -}
|
---|
1323 | -
|
---|
1324 | -/* ---------- Destroy one of vietual YM3812 ---------- */
|
---|
1325 | void OPLDestroy(FM_OPL *OPL) {
|
---|
1326 | - OPL_UnLockTable();
|
---|
1327 | - free(OPL);
|
---|
1328 | -}
|
---|
1329 | -
|
---|
1330 | -/* ---------- Option handlers ---------- */
|
---|
1331 | -void OPLSetTimerHandler(FM_OPL *OPL, OPL_TIMERHANDLER TimerHandler,int channelOffset) {
|
---|
1332 | - OPL->TimerHandler = TimerHandler;
|
---|
1333 | - OPL->TimerParam = channelOffset;
|
---|
1334 | + delete OPL;
|
---|
1335 | }
|
---|
1336 |
|
---|
1337 | -void OPLSetIRQHandler(FM_OPL *OPL, OPL_IRQHANDLER IRQHandler, int param) {
|
---|
1338 | - OPL->IRQHandler = IRQHandler;
|
---|
1339 | - OPL->IRQParam = param;
|
---|
1340 | +void OPLResetChip(FM_OPL *OPL) {
|
---|
1341 | + OPL->reset();
|
---|
1342 | }
|
---|
1343 |
|
---|
1344 | -void OPLSetUpdateHandler(FM_OPL *OPL, OPL_UPDATEHANDLER UpdateHandler,int param) {
|
---|
1345 | - OPL->UpdateHandler = UpdateHandler;
|
---|
1346 | - OPL->UpdateParam = param;
|
---|
1347 | +void OPLWrite(FM_OPL *OPL, int a, int v) {
|
---|
1348 | + OPL->write(a, v);
|
---|
1349 | }
|
---|
1350 |
|
---|
1351 | -/* ---------- YM3812 I/O interface ---------- */
|
---|
1352 | -int OPLWrite(FM_OPL *OPL,int a,int v) {
|
---|
1353 | - if(!(a & 1)) { /* address port */
|
---|
1354 | - OPL->address = v & 0xff;
|
---|
1355 | - } else { /* data port */
|
---|
1356 | - if(OPL->UpdateHandler)
|
---|
1357 | - OPL->UpdateHandler(OPL->UpdateParam,0);
|
---|
1358 | - OPLWriteReg(OPL, OPL->address,v);
|
---|
1359 | - }
|
---|
1360 | - return OPL->status >> 7;
|
---|
1361 | +unsigned char OPLRead(FM_OPL *OPL, int a) {
|
---|
1362 | + return OPL->read(a);
|
---|
1363 | }
|
---|
1364 |
|
---|
1365 | -unsigned char OPLRead(FM_OPL *OPL,int a) {
|
---|
1366 | - if(!(a & 1)) { /* status port */
|
---|
1367 | - return OPL->status & (OPL->statusmask | 0x80);
|
---|
1368 | - }
|
---|
1369 | - /* data port */
|
---|
1370 | - switch(OPL->address) {
|
---|
1371 | - case 0x05: /* KeyBoard IN */
|
---|
1372 | - warning("OPL:read unmapped KEYBOARD port\n");
|
---|
1373 | - return 0;
|
---|
1374 | - case 0x19: /* I/O DATA */
|
---|
1375 | - warning("OPL:read unmapped I/O port\n");
|
---|
1376 | - return 0;
|
---|
1377 | - case 0x1a: /* PCM-DATA */
|
---|
1378 | - return 0;
|
---|
1379 | - default:
|
---|
1380 | - break;
|
---|
1381 | - }
|
---|
1382 | - return 0;
|
---|
1383 | +void OPLWriteReg(FM_OPL *OPL, int r, int v) {
|
---|
1384 | + OPL->writeReg(r, v);
|
---|
1385 | }
|
---|
1386 |
|
---|
1387 | -int OPLTimerOver(FM_OPL *OPL, int c) {
|
---|
1388 | - if(c) { /* Timer B */
|
---|
1389 | - OPL_STATUS_SET(OPL, 0x20);
|
---|
1390 | - } else { /* Timer A */
|
---|
1391 | - OPL_STATUS_SET(OPL, 0x40);
|
---|
1392 | - /* CSM mode key,TL controll */
|
---|
1393 | - if(OPL->mode & 0x80) { /* CSM mode total level latch and auto key on */
|
---|
1394 | - int ch;
|
---|
1395 | - if(OPL->UpdateHandler)
|
---|
1396 | - OPL->UpdateHandler(OPL->UpdateParam,0);
|
---|
1397 | - for(ch = 0; ch < 9; ch++)
|
---|
1398 | - CSMKeyControll(&OPL->P_CH[ch]);
|
---|
1399 | - }
|
---|
1400 | - }
|
---|
1401 | - /* reload timer */
|
---|
1402 | - if (OPL->TimerHandler)
|
---|
1403 | - (OPL->TimerHandler)(OPL->TimerParam + c, (double)OPL->T[c] * OPL->TimerBase);
|
---|
1404 | - return OPL->status >> 7;
|
---|
1405 | +void YM3812UpdateOne(FM_OPL *OPL, int16 *buffer, int length) {
|
---|
1406 | + OPL->readBuffer(buffer, length);
|
---|
1407 | }
|
---|
1408 |
|
---|
1409 | +// Factory method
|
---|
1410 | FM_OPL *makeAdlibOPL(int rate) {
|
---|
1411 | - // We need to emulate one YM3812 chip
|
---|
1412 | - int env_bits = FMOPL_ENV_BITS_HQ;
|
---|
1413 | - int eg_ent = FMOPL_EG_ENT_HQ;
|
---|
1414 | -#if defined (_WIN32_WCE) || defined(__SYMBIAN32__) || defined(PALMOS_MODE) || defined(__GP32__) || defined (GP2X) || defined(__MAEMO__) || defined(__DS__) || defined (__MINT__)
|
---|
1415 | - if (ConfMan.hasKey("FM_high_quality") && ConfMan.getBool("FM_high_quality")) {
|
---|
1416 | - env_bits = FMOPL_ENV_BITS_HQ;
|
---|
1417 | - eg_ent = FMOPL_EG_ENT_HQ;
|
---|
1418 | - } else if (ConfMan.hasKey("FM_medium_quality") && ConfMan.getBool("FM_medium_quality")) {
|
---|
1419 | - env_bits = FMOPL_ENV_BITS_MQ;
|
---|
1420 | - eg_ent = FMOPL_EG_ENT_MQ;
|
---|
1421 | - } else {
|
---|
1422 | - env_bits = FMOPL_ENV_BITS_LQ;
|
---|
1423 | - eg_ent = FMOPL_EG_ENT_LQ;
|
---|
1424 | - }
|
---|
1425 | -#endif
|
---|
1426 | -
|
---|
1427 | - OPLBuildTables(env_bits, eg_ent);
|
---|
1428 | - return OPLCreate(OPL_TYPE_YM3812, 3579545, rate);
|
---|
1429 | + FM_OPL *opl = AdLib::AdLib::createInstance();
|
---|
1430 | + if (opl)
|
---|
1431 | + opl->init(rate);
|
---|
1432 | + return opl;
|
---|
1433 | }
|
---|
1434 | +
|
---|
1435 | Index: sound/softsynth/adlib/dosbox.cpp
|
---|
1436 | ===================================================================
|
---|
1437 | --- sound/softsynth/adlib/dosbox.cpp (revision 0)
|
---|
1438 | +++ sound/softsynth/adlib/dosbox.cpp (revision 0)
|
---|
1439 | @@ -0,0 +1,284 @@
|
---|
1440 | +/* ScummVM - Graphic Adventure Engine
|
---|
1441 | + *
|
---|
1442 | + * ScummVM is the legal property of its developers, whose names
|
---|
1443 | + * are too numerous to list here. Please refer to the COPYRIGHT
|
---|
1444 | + * file distributed with this source distribution.
|
---|
1445 | + *
|
---|
1446 | + * This program is free software; you can redistribute it and/or
|
---|
1447 | + * modify it under the terms of the GNU General Public License
|
---|
1448 | + * as published by the Free Software Foundation; either version 2
|
---|
1449 | + * of the License, or (at your option) any later version.
|
---|
1450 | + *
|
---|
1451 | + * This program is distributed in the hope that it will be useful,
|
---|
1452 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
1453 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
1454 | + * GNU General Public License for more details.
|
---|
1455 | + *
|
---|
1456 | + * You should have received a copy of the GNU General Public License
|
---|
1457 | + * along with this program; if not, write to the Free Software
|
---|
1458 | + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
---|
1459 | + *
|
---|
1460 | + * $URL$
|
---|
1461 | + * $Id$
|
---|
1462 | + */
|
---|
1463 | +
|
---|
1464 | +/*
|
---|
1465 | + * Based on AdLib emulation code of DOSBox
|
---|
1466 | + * Copyright (C) 2002-2009 The DOSBox Team
|
---|
1467 | + * Licensed under GPLv2+
|
---|
1468 | + * http://www.dosbox.com
|
---|
1469 | + */
|
---|
1470 | +
|
---|
1471 | +#ifndef DISABLE_DOSBOX_ADLIB
|
---|
1472 | +
|
---|
1473 | +#include "dosbox.h"
|
---|
1474 | +#include "dbopl.h"
|
---|
1475 | +
|
---|
1476 | +#include "common/system.h"
|
---|
1477 | +
|
---|
1478 | +#include <math.h>
|
---|
1479 | +#include <string.h>
|
---|
1480 | +
|
---|
1481 | +namespace AdLib {
|
---|
1482 | +namespace DOSBox {
|
---|
1483 | +
|
---|
1484 | +Timer::Timer() {
|
---|
1485 | + masked = false;
|
---|
1486 | + overflow = false;
|
---|
1487 | + enabled = false;
|
---|
1488 | + counter = 0;
|
---|
1489 | + delay = 0;
|
---|
1490 | +}
|
---|
1491 | +
|
---|
1492 | +void Timer::update(double time) {
|
---|
1493 | + if (!enabled || !delay)
|
---|
1494 | + return;
|
---|
1495 | + double deltaStart = time - startTime;
|
---|
1496 | + // Only set the overflow flag when not masked
|
---|
1497 | + if (deltaStart >= 0 && !masked)
|
---|
1498 | + overflow = 1;
|
---|
1499 | +}
|
---|
1500 | +
|
---|
1501 | +void Timer::reset(double time) {
|
---|
1502 | + overflow = false;
|
---|
1503 | + if (!delay || !enabled)
|
---|
1504 | + return;
|
---|
1505 | + double delta = (time - startTime);
|
---|
1506 | + double rem = fmod(delta, delay);
|
---|
1507 | + double next = delay - rem;
|
---|
1508 | + startTime = time + next;
|
---|
1509 | +}
|
---|
1510 | +
|
---|
1511 | +void Timer::stop() {
|
---|
1512 | + enabled = false;
|
---|
1513 | +}
|
---|
1514 | +
|
---|
1515 | +void Timer::start(double time, int scale) {
|
---|
1516 | + //Don't enable again
|
---|
1517 | + if (enabled)
|
---|
1518 | + return;
|
---|
1519 | + enabled = true;
|
---|
1520 | + delay = 0.001 * (256 - counter) * scale;
|
---|
1521 | + startTime = time + delay;
|
---|
1522 | +}
|
---|
1523 | +
|
---|
1524 | +bool Chip::write(uint32 reg, uint8 val) {
|
---|
1525 | + switch (reg) {
|
---|
1526 | + case 0x02:
|
---|
1527 | + timer[0].counter = val;
|
---|
1528 | + return true;
|
---|
1529 | + case 0x03:
|
---|
1530 | + timer[1].counter = val;
|
---|
1531 | + return true;
|
---|
1532 | + case 0x04:
|
---|
1533 | + // TODO: I couldn't get behind the PIC_FullIndex logic, but I would guess
|
---|
1534 | + // it should be like this...
|
---|
1535 | + double time = g_system->getMillis() / 1000.0;
|
---|
1536 | +
|
---|
1537 | + if (val & 0x80) {
|
---|
1538 | + timer[0].reset(time);
|
---|
1539 | + timer[1].reset(time);
|
---|
1540 | + } else {
|
---|
1541 | + timer[0].update(time);
|
---|
1542 | + timer[1].update(time);
|
---|
1543 | +
|
---|
1544 | + if (val & 0x1)
|
---|
1545 | + timer[0].start(time, 80);
|
---|
1546 | + else
|
---|
1547 | + timer[0].stop();
|
---|
1548 | +
|
---|
1549 | + timer[0].masked = (val & 0x40) > 0;
|
---|
1550 | +
|
---|
1551 | + if (timer[0].masked)
|
---|
1552 | + timer[0].overflow = false;
|
---|
1553 | +
|
---|
1554 | + if (val & 0x2)
|
---|
1555 | + timer[1].start(time, 320);
|
---|
1556 | + else
|
---|
1557 | + timer[1].stop();
|
---|
1558 | +
|
---|
1559 | + timer[1].masked = (val & 0x20) > 0;
|
---|
1560 | +
|
---|
1561 | + if (timer[1].masked)
|
---|
1562 | + timer[1].overflow = false;
|
---|
1563 | + }
|
---|
1564 | + return true;
|
---|
1565 | + }
|
---|
1566 | + return false;
|
---|
1567 | +}
|
---|
1568 | +
|
---|
1569 | +uint8 Chip::read() {
|
---|
1570 | + // TODO: I couldn't get behind the PIC_FullIndex logic, but I would guess
|
---|
1571 | + // it should be like this...
|
---|
1572 | + double time = g_system->getMillis() / 1000.0;
|
---|
1573 | +
|
---|
1574 | + timer[0].update(time);
|
---|
1575 | + timer[1].update(time);
|
---|
1576 | +
|
---|
1577 | + uint8 ret = 0;
|
---|
1578 | + //Overflow won't be set if a channel is masked
|
---|
1579 | + if (timer[0].overflow) {
|
---|
1580 | + ret |= 0x40;
|
---|
1581 | + ret |= 0x80;
|
---|
1582 | + }
|
---|
1583 | + if (timer[1].overflow) {
|
---|
1584 | + ret |= 0x20;
|
---|
1585 | + ret |= 0x80;
|
---|
1586 | + }
|
---|
1587 | + return ret;
|
---|
1588 | +}
|
---|
1589 | +
|
---|
1590 | +AdLib_DOSBox::AdLib_DOSBox() : _type(kOpl2), _rate(0), _handler(0) {
|
---|
1591 | +}
|
---|
1592 | +
|
---|
1593 | +AdLib_DOSBox::~AdLib_DOSBox() {
|
---|
1594 | + free();
|
---|
1595 | +}
|
---|
1596 | +
|
---|
1597 | +void AdLib_DOSBox::free() {
|
---|
1598 | + delete _handler;
|
---|
1599 | + _handler = 0;
|
---|
1600 | +}
|
---|
1601 | +
|
---|
1602 | +void AdLib_DOSBox::init(int rate, kOplType type) {
|
---|
1603 | + free();
|
---|
1604 | +
|
---|
1605 | + _reg.dual[0] = 0;
|
---|
1606 | + _reg.dual[1] = 0;
|
---|
1607 | + _reg.normal = 0;
|
---|
1608 | +
|
---|
1609 | + memset(_chip, 0, sizeof(_chip));
|
---|
1610 | + _type = type;
|
---|
1611 | +
|
---|
1612 | + switch (_type) {
|
---|
1613 | + case kOpl2:
|
---|
1614 | + _handler = new DBOPL::Handler();
|
---|
1615 | + break;
|
---|
1616 | + }
|
---|
1617 | +
|
---|
1618 | + _handler->init(rate);
|
---|
1619 | + _rate = rate;
|
---|
1620 | +}
|
---|
1621 | +
|
---|
1622 | +void AdLib_DOSBox::reset() {
|
---|
1623 | + // TODO: Find a nicer way to reset the emulator
|
---|
1624 | + init(_rate, _type);
|
---|
1625 | +}
|
---|
1626 | +
|
---|
1627 | +void AdLib_DOSBox::write(int port, int val) {
|
---|
1628 | + if (port&1) {
|
---|
1629 | + switch (_type) {
|
---|
1630 | + case kOpl2:
|
---|
1631 | + //case kOpl3:
|
---|
1632 | + if (!_chip[0].write(_reg.normal, val))
|
---|
1633 | + _handler->writeReg(_reg.normal, val);
|
---|
1634 | + break;
|
---|
1635 | + /*case kDualOpl2:
|
---|
1636 | + // Not a 0x??8 port, then write to a specific port
|
---|
1637 | + if (!(port & 0x8)) {
|
---|
1638 | + byte index = (port & 2) >> 1;
|
---|
1639 | + dualWrite(index, _reg.dual[index], val);
|
---|
1640 | + } else {
|
---|
1641 | + //Write to both ports
|
---|
1642 | + dualWrite(0, _reg.dual[0], val);
|
---|
1643 | + dualWrite(1, _reg.dual[1], val);
|
---|
1644 | + }
|
---|
1645 | + break;*/
|
---|
1646 | + }
|
---|
1647 | + } else {
|
---|
1648 | + // Ask the handler to write the address
|
---|
1649 | + // Make sure to clip them in the right range
|
---|
1650 | + switch (_type) {
|
---|
1651 | + case kOpl2:
|
---|
1652 | + _reg.normal = _handler->writeAddr(port, val) & 0xff;
|
---|
1653 | + break;
|
---|
1654 | + /*case kOpl3:
|
---|
1655 | + _reg.normal = _handler->writeAddr(port, val) & 0x1ff;
|
---|
1656 | + break;
|
---|
1657 | + case kDualOpl2:
|
---|
1658 | + // Not a 0x?88 port, when write to a specific side
|
---|
1659 | + if (!(port & 0x8)) {
|
---|
1660 | + byte index = (port & 2) >> 1;
|
---|
1661 | + _reg.dual[index] = val & 0xff;
|
---|
1662 | + } else {
|
---|
1663 | + _reg.dual[0] = val & 0xff;
|
---|
1664 | + _reg.dual[1] = val & 0xff;
|
---|
1665 | + }
|
---|
1666 | + break;*/
|
---|
1667 | + }
|
---|
1668 | + }
|
---|
1669 | +}
|
---|
1670 | +
|
---|
1671 | +byte AdLib_DOSBox::read(int port) {
|
---|
1672 | + switch (_type) {
|
---|
1673 | + case kOpl2:
|
---|
1674 | + if (!(port & 1))
|
---|
1675 | + //Make sure the low bits are 6 on opl2
|
---|
1676 | + return _chip[0].read() | 0x6;
|
---|
1677 | + break;
|
---|
1678 | + /*case kOpl3:
|
---|
1679 | + if (!(port & 1))
|
---|
1680 | + return _chip[0].read();
|
---|
1681 | + break;
|
---|
1682 | + case kDualOpl2:
|
---|
1683 | + // Only return for the lower ports
|
---|
1684 | + if (port & 1)
|
---|
1685 | + return 0xff;
|
---|
1686 | + // Make sure the low bits are 6 on opl2
|
---|
1687 | + return _chip[(port >> 1) & 1].read() | 0x6;*/
|
---|
1688 | + }
|
---|
1689 | + return 0;
|
---|
1690 | +}
|
---|
1691 | +
|
---|
1692 | +void AdLib_DOSBox::writeReg(int r, int v) {
|
---|
1693 | + byte tempReg = 0;
|
---|
1694 | + switch (_type) {
|
---|
1695 | + case kOpl2:
|
---|
1696 | + //case kOpl3:
|
---|
1697 | + // We can't use _handler->writeReg here directly, since it would miss timer changes.
|
---|
1698 | +
|
---|
1699 | + // Backup old setup register
|
---|
1700 | + tempReg = _reg.normal;
|
---|
1701 | +
|
---|
1702 | + // We need to set the register we want to write to via port 0x388
|
---|
1703 | + write(0x388, r);
|
---|
1704 | + // Do the real writing to the register
|
---|
1705 | + write(0x389, v);
|
---|
1706 | + // Restore the old register
|
---|
1707 | + write(0x388, tempReg);
|
---|
1708 | + break;
|
---|
1709 | +
|
---|
1710 | + //case kDualOpl2:
|
---|
1711 | + // error("Can't use AdLib_DOSBox::writeReg on Dual OPL2");
|
---|
1712 | + // break;
|
---|
1713 | + };
|
---|
1714 | +}
|
---|
1715 | +
|
---|
1716 | +void AdLib_DOSBox::readBuffer(int16 *buffer, int length) {
|
---|
1717 | + _handler->generate(buffer, length);
|
---|
1718 | +}
|
---|
1719 | +
|
---|
1720 | +} // end of namespace DOSBox
|
---|
1721 | +} // end of namespace AdLib
|
---|
1722 | +
|
---|
1723 | +#endif // !DISABLE_DOSBOX_ADLIB
|
---|
1724 | Index: sound/softsynth/adlib/mame.cpp
|
---|
1725 | ===================================================================
|
---|
1726 | --- sound/softsynth/adlib/mame.cpp (revision 0)
|
---|
1727 | +++ sound/softsynth/adlib/mame.cpp (revision 0)
|
---|
1728 | @@ -0,0 +1,1230 @@
|
---|
1729 | +/* ScummVM - Graphic Adventure Engine
|
---|
1730 | + *
|
---|
1731 | + * ScummVM is the legal property of its developers, whose names
|
---|
1732 | + * are too numerous to list here. Please refer to the COPYRIGHT
|
---|
1733 | + * file distributed with this source distribution.
|
---|
1734 | + *
|
---|
1735 | + * This program is free software; you can redistribute it and/or
|
---|
1736 | + * modify it under the terms of the GNU General Public License
|
---|
1737 | + * as published by the Free Software Foundation; either version 2
|
---|
1738 | + * of the License, or (at your option) any later version.
|
---|
1739 | +
|
---|
1740 | + * This program is distributed in the hope that it will be useful,
|
---|
1741 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
1742 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
1743 | + * GNU General Public License for more details.
|
---|
1744 | +
|
---|
1745 | + * You should have received a copy of the GNU General Public License
|
---|
1746 | + * along with this program; if not, write to the Free Software
|
---|
1747 | + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
---|
1748 | + *
|
---|
1749 | + * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/trunk/sound/fmopl.cpp $
|
---|
1750 | + * $Id: fmopl.cpp 38211 2009-02-15 10:07:50Z sev $
|
---|
1751 | + *
|
---|
1752 | + * LGPL licensed version of MAMEs fmopl (V0.37a modified) by
|
---|
1753 | + * Tatsuyuki Satoh. Included from LGPL'ed AdPlug.
|
---|
1754 | + */
|
---|
1755 | +
|
---|
1756 | +#include <stdio.h>
|
---|
1757 | +#include <stdlib.h>
|
---|
1758 | +#include <string.h>
|
---|
1759 | +#include <stdarg.h>
|
---|
1760 | +#include <math.h>
|
---|
1761 | +
|
---|
1762 | +#include "mame.h"
|
---|
1763 | +
|
---|
1764 | +#if defined (_WIN32_WCE) || defined (__SYMBIAN32__) || defined(PALMOS_MODE) || defined(__GP32__) || defined(GP2X) || defined (__MAEMO__) || defined(__DS__) || defined (__MINT__)
|
---|
1765 | +#include "common/config-manager.h"
|
---|
1766 | +#endif
|
---|
1767 | +
|
---|
1768 | +namespace AdLib {
|
---|
1769 | +namespace MAME {
|
---|
1770 | +
|
---|
1771 | +AdLib_MAME::~AdLib_MAME() {
|
---|
1772 | + MAME::OPLDestroy(_opl);
|
---|
1773 | + _opl = 0;
|
---|
1774 | +}
|
---|
1775 | +
|
---|
1776 | +void AdLib_MAME::init(int rate, kOplType type) {
|
---|
1777 | + if (_opl)
|
---|
1778 | + MAME::OPLDestroy(_opl);
|
---|
1779 | +
|
---|
1780 | + _opl = MAME::makeAdlibOPL(rate);
|
---|
1781 | +}
|
---|
1782 | +
|
---|
1783 | +void AdLib_MAME::reset() {
|
---|
1784 | + MAME::OPLResetChip(_opl);
|
---|
1785 | +}
|
---|
1786 | +
|
---|
1787 | +void AdLib_MAME::write(int a, int v) {
|
---|
1788 | + MAME::OPLWrite(_opl, a, v);
|
---|
1789 | +}
|
---|
1790 | +
|
---|
1791 | +byte AdLib_MAME::read(int a) {
|
---|
1792 | + return MAME::OPLRead(_opl, a);
|
---|
1793 | +}
|
---|
1794 | +
|
---|
1795 | +void AdLib_MAME::writeReg(int r, int v) {
|
---|
1796 | + MAME::OPLWriteReg(_opl, r, v);
|
---|
1797 | +}
|
---|
1798 | +
|
---|
1799 | +void AdLib_MAME::readBuffer(int16 *buffer, int length) {
|
---|
1800 | + MAME::YM3812UpdateOne(_opl, buffer, length);
|
---|
1801 | +}
|
---|
1802 | +
|
---|
1803 | +/* -------------------- preliminary define section --------------------- */
|
---|
1804 | +/* attack/decay rate time rate */
|
---|
1805 | +#define OPL_ARRATE 141280 /* RATE 4 = 2826.24ms @ 3.6MHz */
|
---|
1806 | +#define OPL_DRRATE 1956000 /* RATE 4 = 39280.64ms @ 3.6MHz */
|
---|
1807 | +
|
---|
1808 | +#define FREQ_BITS 24 /* frequency turn */
|
---|
1809 | +
|
---|
1810 | +/* counter bits = 20 , octerve 7 */
|
---|
1811 | +#define FREQ_RATE (1<<(FREQ_BITS-20))
|
---|
1812 | +#define TL_BITS (FREQ_BITS+2)
|
---|
1813 | +
|
---|
1814 | +/* final output shift , limit minimum and maximum */
|
---|
1815 | +#define OPL_OUTSB (TL_BITS+3-16) /* OPL output final shift 16bit */
|
---|
1816 | +#define OPL_MAXOUT (0x7fff<<OPL_OUTSB)
|
---|
1817 | +#define OPL_MINOUT (-0x8000<<OPL_OUTSB)
|
---|
1818 | +
|
---|
1819 | +/* -------------------- quality selection --------------------- */
|
---|
1820 | +
|
---|
1821 | +/* sinwave entries */
|
---|
1822 | +/* used static memory = SIN_ENT * 4 (byte) */
|
---|
1823 | +#ifdef __DS__
|
---|
1824 | +#include "dsmain.h"
|
---|
1825 | +#define SIN_ENT_SHIFT 8
|
---|
1826 | +#else
|
---|
1827 | +#define SIN_ENT_SHIFT 11
|
---|
1828 | +#endif
|
---|
1829 | +#define SIN_ENT (1<<SIN_ENT_SHIFT)
|
---|
1830 | +
|
---|
1831 | +/* output level entries (envelope,sinwave) */
|
---|
1832 | +/* envelope counter lower bits */
|
---|
1833 | +int ENV_BITS;
|
---|
1834 | +/* envelope output entries */
|
---|
1835 | +int EG_ENT;
|
---|
1836 | +
|
---|
1837 | +/* used dynamic memory = EG_ENT*4*4(byte)or EG_ENT*6*4(byte) */
|
---|
1838 | +/* used static memory = EG_ENT*4 (byte) */
|
---|
1839 | +int EG_OFF; /* OFF */
|
---|
1840 | +int EG_DED;
|
---|
1841 | +int EG_DST; /* DECAY START */
|
---|
1842 | +int EG_AED;
|
---|
1843 | +#define EG_AST 0 /* ATTACK START */
|
---|
1844 | +
|
---|
1845 | +#define EG_STEP (96.0/EG_ENT) /* OPL is 0.1875 dB step */
|
---|
1846 | +
|
---|
1847 | +/* LFO table entries */
|
---|
1848 | +#define VIB_ENT 512
|
---|
1849 | +#define VIB_SHIFT (32-9)
|
---|
1850 | +#define AMS_ENT 512
|
---|
1851 | +#define AMS_SHIFT (32-9)
|
---|
1852 | +
|
---|
1853 | +#define VIB_RATE_SHIFT 8
|
---|
1854 | +#define VIB_RATE (1<<VIB_RATE_SHIFT)
|
---|
1855 | +
|
---|
1856 | +/* -------------------- local defines , macros --------------------- */
|
---|
1857 | +
|
---|
1858 | +/* register number to channel number , slot offset */
|
---|
1859 | +#define SLOT1 0
|
---|
1860 | +#define SLOT2 1
|
---|
1861 | +
|
---|
1862 | +/* envelope phase */
|
---|
1863 | +#define ENV_MOD_RR 0x00
|
---|
1864 | +#define ENV_MOD_DR 0x01
|
---|
1865 | +#define ENV_MOD_AR 0x02
|
---|
1866 | +
|
---|
1867 | +/* -------------------- tables --------------------- */
|
---|
1868 | +static const int slot_array[32] = {
|
---|
1869 | + 0, 2, 4, 1, 3, 5,-1,-1,
|
---|
1870 | + 6, 8,10, 7, 9,11,-1,-1,
|
---|
1871 | + 12,14,16,13,15,17,-1,-1,
|
---|
1872 | + -1,-1,-1,-1,-1,-1,-1,-1
|
---|
1873 | +};
|
---|
1874 | +
|
---|
1875 | +static uint KSL_TABLE[8 * 16];
|
---|
1876 | +
|
---|
1877 | +static const double KSL_TABLE_SEED[8 * 16] = {
|
---|
1878 | + /* OCT 0 */
|
---|
1879 | + 0.000, 0.000, 0.000, 0.000,
|
---|
1880 | + 0.000, 0.000, 0.000, 0.000,
|
---|
1881 | + 0.000, 0.000, 0.000, 0.000,
|
---|
1882 | + 0.000, 0.000, 0.000, 0.000,
|
---|
1883 | + /* OCT 1 */
|
---|
1884 | + 0.000, 0.000, 0.000, 0.000,
|
---|
1885 | + 0.000, 0.000, 0.000, 0.000,
|
---|
1886 | + 0.000, 0.750, 1.125, 1.500,
|
---|
1887 | + 1.875, 2.250, 2.625, 3.000,
|
---|
1888 | + /* OCT 2 */
|
---|
1889 | + 0.000, 0.000, 0.000, 0.000,
|
---|
1890 | + 0.000, 1.125, 1.875, 2.625,
|
---|
1891 | + 3.000, 3.750, 4.125, 4.500,
|
---|
1892 | + 4.875, 5.250, 5.625, 6.000,
|
---|
1893 | + /* OCT 3 */
|
---|
1894 | + 0.000, 0.000, 0.000, 1.875,
|
---|
1895 | + 3.000, 4.125, 4.875, 5.625,
|
---|
1896 | + 6.000, 6.750, 7.125, 7.500,
|
---|
1897 | + 7.875, 8.250, 8.625, 9.000,
|
---|
1898 | + /* OCT 4 */
|
---|
1899 | + 0.000, 0.000, 3.000, 4.875,
|
---|
1900 | + 6.000, 7.125, 7.875, 8.625,
|
---|
1901 | + 9.000, 9.750, 10.125, 10.500,
|
---|
1902 | + 10.875, 11.250, 11.625, 12.000,
|
---|
1903 | + /* OCT 5 */
|
---|
1904 | + 0.000, 3.000, 6.000, 7.875,
|
---|
1905 | + 9.000, 10.125, 10.875, 11.625,
|
---|
1906 | + 12.000, 12.750, 13.125, 13.500,
|
---|
1907 | + 13.875, 14.250, 14.625, 15.000,
|
---|
1908 | + /* OCT 6 */
|
---|
1909 | + 0.000, 6.000, 9.000, 10.875,
|
---|
1910 | + 12.000, 13.125, 13.875, 14.625,
|
---|
1911 | + 15.000, 15.750, 16.125, 16.500,
|
---|
1912 | + 16.875, 17.250, 17.625, 18.000,
|
---|
1913 | + /* OCT 7 */
|
---|
1914 | + 0.000, 9.000, 12.000, 13.875,
|
---|
1915 | + 15.000, 16.125, 16.875, 17.625,
|
---|
1916 | + 18.000, 18.750, 19.125, 19.500,
|
---|
1917 | + 19.875, 20.250, 20.625, 21.000
|
---|
1918 | +};
|
---|
1919 | +
|
---|
1920 | +/* sustain level table (3db per step) */
|
---|
1921 | +/* 0 - 15: 0, 3, 6, 9,12,15,18,21,24,27,30,33,36,39,42,93 (dB)*/
|
---|
1922 | +
|
---|
1923 | +static int SL_TABLE[16];
|
---|
1924 | +
|
---|
1925 | +static const uint SL_TABLE_SEED[16] = {
|
---|
1926 | + 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 31
|
---|
1927 | +};
|
---|
1928 | +
|
---|
1929 | +#define TL_MAX (EG_ENT * 2) /* limit(tl + ksr + envelope) + sinwave */
|
---|
1930 | +/* TotalLevel : 48 24 12 6 3 1.5 0.75 (dB) */
|
---|
1931 | +/* TL_TABLE[ 0 to TL_MAX ] : plus section */
|
---|
1932 | +/* TL_TABLE[ TL_MAX to TL_MAX+TL_MAX-1 ] : minus section */
|
---|
1933 | +static int *TL_TABLE;
|
---|
1934 | +
|
---|
1935 | +/* pointers to TL_TABLE with sinwave output offset */
|
---|
1936 | +static int **SIN_TABLE;
|
---|
1937 | +
|
---|
1938 | +/* LFO table */
|
---|
1939 | +static int *AMS_TABLE;
|
---|
1940 | +static int *VIB_TABLE;
|
---|
1941 | +
|
---|
1942 | +/* envelope output curve table */
|
---|
1943 | +/* attack + decay + OFF */
|
---|
1944 | +//static int ENV_CURVE[2*EG_ENT+1];
|
---|
1945 | +//static int ENV_CURVE[2 * 4096 + 1]; // to keep it static ...
|
---|
1946 | +static int *ENV_CURVE;
|
---|
1947 | +
|
---|
1948 | +
|
---|
1949 | +/* multiple table */
|
---|
1950 | +#define ML(a) (int)(a * 2)
|
---|
1951 | +static const uint MUL_TABLE[16]= {
|
---|
1952 | +/* 1/2, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15 */
|
---|
1953 | + ML(0.50), ML(1.00), ML(2.00), ML(3.00), ML(4.00), ML(5.00), ML(6.00), ML(7.00),
|
---|
1954 | + ML(8.00), ML(9.00), ML(10.00), ML(10.00),ML(12.00),ML(12.00),ML(15.00),ML(15.00)
|
---|
1955 | +};
|
---|
1956 | +#undef ML
|
---|
1957 | +
|
---|
1958 | +/* dummy attack / decay rate ( when rate == 0 ) */
|
---|
1959 | +static int RATE_0[16]=
|
---|
1960 | +{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
|
---|
1961 | +
|
---|
1962 | +/* -------------------- static state --------------------- */
|
---|
1963 | +
|
---|
1964 | +/* lock level of common table */
|
---|
1965 | +static int num_lock = 0;
|
---|
1966 | +
|
---|
1967 | +/* work table */
|
---|
1968 | +static void *cur_chip = NULL; /* current chip point */
|
---|
1969 | +/* currenct chip state */
|
---|
1970 | +/* static OPLSAMPLE *bufL,*bufR; */
|
---|
1971 | +static OPL_CH *S_CH;
|
---|
1972 | +static OPL_CH *E_CH;
|
---|
1973 | +OPL_SLOT *SLOT7_1, *SLOT7_2, *SLOT8_1, *SLOT8_2;
|
---|
1974 | +
|
---|
1975 | +static int outd[1];
|
---|
1976 | +static int ams;
|
---|
1977 | +static int vib;
|
---|
1978 | +int *ams_table;
|
---|
1979 | +int *vib_table;
|
---|
1980 | +static int amsIncr;
|
---|
1981 | +static int vibIncr;
|
---|
1982 | +static int feedback2; /* connect for SLOT 2 */
|
---|
1983 | +
|
---|
1984 | +/* --------------------- rebuild tables ------------------- */
|
---|
1985 | +
|
---|
1986 | +#define SC_KSL(mydb) ((uint) (mydb / (EG_STEP / 2)))
|
---|
1987 | +#define SC_SL(db) (int)(db * ((3 / EG_STEP) * (1 << ENV_BITS))) + EG_DST
|
---|
1988 | +
|
---|
1989 | +void OPLBuildTables(int ENV_BITS_PARAM, int EG_ENT_PARAM) {
|
---|
1990 | + int i;
|
---|
1991 | +
|
---|
1992 | + ENV_BITS = ENV_BITS_PARAM;
|
---|
1993 | + EG_ENT = EG_ENT_PARAM;
|
---|
1994 | + EG_OFF = ((2 * EG_ENT)<<ENV_BITS); /* OFF */
|
---|
1995 | + EG_DED = EG_OFF;
|
---|
1996 | + EG_DST = (EG_ENT << ENV_BITS); /* DECAY START */
|
---|
1997 | + EG_AED = EG_DST;
|
---|
1998 | + //EG_STEP = (96.0/EG_ENT);
|
---|
1999 | +
|
---|
2000 | + for (i = 0; i < ARRAYSIZE(KSL_TABLE_SEED); i++)
|
---|
2001 | + KSL_TABLE[i] = SC_KSL(KSL_TABLE_SEED[i]);
|
---|
2002 | +
|
---|
2003 | + for (i = 0; i < ARRAYSIZE(SL_TABLE_SEED); i++)
|
---|
2004 | + SL_TABLE[i] = SC_SL(SL_TABLE_SEED[i]);
|
---|
2005 | +}
|
---|
2006 | +
|
---|
2007 | +#undef SC_KSL
|
---|
2008 | +#undef SC_SL
|
---|
2009 | +
|
---|
2010 | +/* --------------------- subroutines --------------------- */
|
---|
2011 | +
|
---|
2012 | +/* status set and IRQ handling */
|
---|
2013 | +inline void OPL_STATUS_SET(FM_OPL *OPL, int flag) {
|
---|
2014 | + /* set status flag */
|
---|
2015 | + OPL->status |= flag;
|
---|
2016 | + if(!(OPL->status & 0x80)) {
|
---|
2017 | + if(OPL->status & OPL->statusmask) { /* IRQ on */
|
---|
2018 | + OPL->status |= 0x80;
|
---|
2019 | + /* callback user interrupt handler (IRQ is OFF to ON) */
|
---|
2020 | + if(OPL->IRQHandler)
|
---|
2021 | + (OPL->IRQHandler)(OPL->IRQParam,1);
|
---|
2022 | + }
|
---|
2023 | + }
|
---|
2024 | +}
|
---|
2025 | +
|
---|
2026 | +/* status reset and IRQ handling */
|
---|
2027 | +inline void OPL_STATUS_RESET(FM_OPL *OPL, int flag) {
|
---|
2028 | + /* reset status flag */
|
---|
2029 | + OPL->status &= ~flag;
|
---|
2030 | + if((OPL->status & 0x80)) {
|
---|
2031 | + if (!(OPL->status & OPL->statusmask)) {
|
---|
2032 | + OPL->status &= 0x7f;
|
---|
2033 | + /* callback user interrupt handler (IRQ is ON to OFF) */
|
---|
2034 | + if(OPL->IRQHandler) (OPL->IRQHandler)(OPL->IRQParam,0);
|
---|
2035 | + }
|
---|
2036 | + }
|
---|
2037 | +}
|
---|
2038 | +
|
---|
2039 | +/* IRQ mask set */
|
---|
2040 | +inline void OPL_STATUSMASK_SET(FM_OPL *OPL, int flag) {
|
---|
2041 | + OPL->statusmask = flag;
|
---|
2042 | + /* IRQ handling check */
|
---|
2043 | + OPL_STATUS_SET(OPL,0);
|
---|
2044 | + OPL_STATUS_RESET(OPL,0);
|
---|
2045 | +}
|
---|
2046 | +
|
---|
2047 | +/* ----- key on ----- */
|
---|
2048 | +inline void OPL_KEYON(OPL_SLOT *SLOT) {
|
---|
2049 | + /* sin wave restart */
|
---|
2050 | + SLOT->Cnt = 0;
|
---|
2051 | + /* set attack */
|
---|
2052 | + SLOT->evm = ENV_MOD_AR;
|
---|
2053 | + SLOT->evs = SLOT->evsa;
|
---|
2054 | + SLOT->evc = EG_AST;
|
---|
2055 | + SLOT->eve = EG_AED;
|
---|
2056 | +}
|
---|
2057 | +
|
---|
2058 | +/* ----- key off ----- */
|
---|
2059 | +inline void OPL_KEYOFF(OPL_SLOT *SLOT) {
|
---|
2060 | + if( SLOT->evm > ENV_MOD_RR) {
|
---|
2061 | + /* set envelope counter from envleope output */
|
---|
2062 | +
|
---|
2063 | + // WORKAROUND: The Kyra engine does something very strange when
|
---|
2064 | + // starting a new song. For each channel:
|
---|
2065 | + //
|
---|
2066 | + // * The release rate is set to "fastest".
|
---|
2067 | + // * Any note is keyed off.
|
---|
2068 | + // * A very low-frequency note is keyed on.
|
---|
2069 | + //
|
---|
2070 | + // Usually, what happens next is that the real notes is keyed
|
---|
2071 | + // on immediately, in which case there's no problem.
|
---|
2072 | + //
|
---|
2073 | + // However, if the note is again keyed off (because the channel
|
---|
2074 | + // begins on a rest rather than a note), the envelope counter
|
---|
2075 | + // was moved from the very lowest point on the attack curve to
|
---|
2076 | + // the very highest point on the release curve.
|
---|
2077 | + //
|
---|
2078 | + // Again, this might not be a problem, if the release rate is
|
---|
2079 | + // still set to "fastest". But in many cases, it had already
|
---|
2080 | + // been increased. And, possibly because of inaccuracies in the
|
---|
2081 | + // envelope generator, that would cause the note to "fade out"
|
---|
2082 | + // for quite a long time.
|
---|
2083 | + //
|
---|
2084 | + // What we really need is a way to find the correct starting
|
---|
2085 | + // point for the envelope counter, and that may be what the
|
---|
2086 | + // commented-out line below is meant to do. For now, simply
|
---|
2087 | + // handle the pathological case.
|
---|
2088 | +
|
---|
2089 | + if (SLOT->evm == ENV_MOD_AR && SLOT->evc == EG_AST)
|
---|
2090 | + SLOT->evc = EG_DED;
|
---|
2091 | + else if( !(SLOT->evc & EG_DST) )
|
---|
2092 | + //SLOT->evc = (ENV_CURVE[SLOT->evc>>ENV_BITS]<<ENV_BITS) + EG_DST;
|
---|
2093 | + SLOT->evc = EG_DST;
|
---|
2094 | + SLOT->eve = EG_DED;
|
---|
2095 | + SLOT->evs = SLOT->evsr;
|
---|
2096 | + SLOT->evm = ENV_MOD_RR;
|
---|
2097 | + }
|
---|
2098 | +}
|
---|
2099 | +
|
---|
2100 | +/* ---------- calcrate Envelope Generator & Phase Generator ---------- */
|
---|
2101 | +
|
---|
2102 | +/* return : envelope output */
|
---|
2103 | +inline uint OPL_CALC_SLOT(OPL_SLOT *SLOT) {
|
---|
2104 | + /* calcrate envelope generator */
|
---|
2105 | + if((SLOT->evc += SLOT->evs) >= SLOT->eve) {
|
---|
2106 | + switch( SLOT->evm ) {
|
---|
2107 | + case ENV_MOD_AR: /* ATTACK -> DECAY1 */
|
---|
2108 | + /* next DR */
|
---|
2109 | + SLOT->evm = ENV_MOD_DR;
|
---|
2110 | + SLOT->evc = EG_DST;
|
---|
2111 | + SLOT->eve = SLOT->SL;
|
---|
2112 | + SLOT->evs = SLOT->evsd;
|
---|
2113 | + break;
|
---|
2114 | + case ENV_MOD_DR: /* DECAY -> SL or RR */
|
---|
2115 | + SLOT->evc = SLOT->SL;
|
---|
2116 | + SLOT->eve = EG_DED;
|
---|
2117 | + if(SLOT->eg_typ) {
|
---|
2118 | + SLOT->evs = 0;
|
---|
2119 | + } else {
|
---|
2120 | + SLOT->evm = ENV_MOD_RR;
|
---|
2121 | + SLOT->evs = SLOT->evsr;
|
---|
2122 | + }
|
---|
2123 | + break;
|
---|
2124 | + case ENV_MOD_RR: /* RR -> OFF */
|
---|
2125 | + SLOT->evc = EG_OFF;
|
---|
2126 | + SLOT->eve = EG_OFF + 1;
|
---|
2127 | + SLOT->evs = 0;
|
---|
2128 | + break;
|
---|
2129 | + }
|
---|
2130 | + }
|
---|
2131 | + /* calcrate envelope */
|
---|
2132 | + return SLOT->TLL + ENV_CURVE[SLOT->evc>>ENV_BITS] + (SLOT->ams ? ams : 0);
|
---|
2133 | +}
|
---|
2134 | +
|
---|
2135 | +/* set algorythm connection */
|
---|
2136 | +static void set_algorythm(OPL_CH *CH) {
|
---|
2137 | + int *carrier = &outd[0];
|
---|
2138 | + CH->connect1 = CH->CON ? carrier : &feedback2;
|
---|
2139 | + CH->connect2 = carrier;
|
---|
2140 | +}
|
---|
2141 | +
|
---|
2142 | +/* ---------- frequency counter for operater update ---------- */
|
---|
2143 | +inline void CALC_FCSLOT(OPL_CH *CH, OPL_SLOT *SLOT) {
|
---|
2144 | + int ksr;
|
---|
2145 | +
|
---|
2146 | + /* frequency step counter */
|
---|
2147 | + SLOT->Incr = CH->fc * SLOT->mul;
|
---|
2148 | + ksr = CH->kcode >> SLOT->KSR;
|
---|
2149 | +
|
---|
2150 | + if( SLOT->ksr != ksr ) {
|
---|
2151 | + SLOT->ksr = ksr;
|
---|
2152 | + /* attack , decay rate recalcration */
|
---|
2153 | + SLOT->evsa = SLOT->AR[ksr];
|
---|
2154 | + SLOT->evsd = SLOT->DR[ksr];
|
---|
2155 | + SLOT->evsr = SLOT->RR[ksr];
|
---|
2156 | + }
|
---|
2157 | + SLOT->TLL = SLOT->TL + (CH->ksl_base>>SLOT->ksl);
|
---|
2158 | +}
|
---|
2159 | +
|
---|
2160 | +/* set multi,am,vib,EG-TYP,KSR,mul */
|
---|
2161 | +inline void set_mul(FM_OPL *OPL, int slot, int v) {
|
---|
2162 | + OPL_CH *CH = &OPL->P_CH[slot>>1];
|
---|
2163 | + OPL_SLOT *SLOT = &CH->SLOT[slot & 1];
|
---|
2164 | +
|
---|
2165 | + SLOT->mul = MUL_TABLE[v & 0x0f];
|
---|
2166 | + SLOT->KSR = (v & 0x10) ? 0 : 2;
|
---|
2167 | + SLOT->eg_typ = (v & 0x20) >> 5;
|
---|
2168 | + SLOT->vib = (v & 0x40);
|
---|
2169 | + SLOT->ams = (v & 0x80);
|
---|
2170 | + CALC_FCSLOT(CH, SLOT);
|
---|
2171 | +}
|
---|
2172 | +
|
---|
2173 | +/* set ksl & tl */
|
---|
2174 | +inline void set_ksl_tl(FM_OPL *OPL, int slot, int v) {
|
---|
2175 | + OPL_CH *CH = &OPL->P_CH[slot>>1];
|
---|
2176 | + OPL_SLOT *SLOT = &CH->SLOT[slot & 1];
|
---|
2177 | + int ksl = v >> 6; /* 0 / 1.5 / 3 / 6 db/OCT */
|
---|
2178 | +
|
---|
2179 | + SLOT->ksl = ksl ? 3-ksl : 31;
|
---|
2180 | + SLOT->TL = (int)((v & 0x3f) * (0.75 / EG_STEP)); /* 0.75db step */
|
---|
2181 | +
|
---|
2182 | + if(!(OPL->mode & 0x80)) { /* not CSM latch total level */
|
---|
2183 | + SLOT->TLL = SLOT->TL + (CH->ksl_base >> SLOT->ksl);
|
---|
2184 | + }
|
---|
2185 | +}
|
---|
2186 | +
|
---|
2187 | +/* set attack rate & decay rate */
|
---|
2188 | +inline void set_ar_dr(FM_OPL *OPL, int slot, int v) {
|
---|
2189 | + OPL_CH *CH = &OPL->P_CH[slot>>1];
|
---|
2190 | + OPL_SLOT *SLOT = &CH->SLOT[slot & 1];
|
---|
2191 | + int ar = v >> 4;
|
---|
2192 | + int dr = v & 0x0f;
|
---|
2193 | +
|
---|
2194 | + SLOT->AR = ar ? &OPL->AR_TABLE[ar << 2] : RATE_0;
|
---|
2195 | + SLOT->evsa = SLOT->AR[SLOT->ksr];
|
---|
2196 | + if(SLOT->evm == ENV_MOD_AR)
|
---|
2197 | + SLOT->evs = SLOT->evsa;
|
---|
2198 | +
|
---|
2199 | + SLOT->DR = dr ? &OPL->DR_TABLE[dr<<2] : RATE_0;
|
---|
2200 | + SLOT->evsd = SLOT->DR[SLOT->ksr];
|
---|
2201 | + if(SLOT->evm == ENV_MOD_DR)
|
---|
2202 | + SLOT->evs = SLOT->evsd;
|
---|
2203 | +}
|
---|
2204 | +
|
---|
2205 | +/* set sustain level & release rate */
|
---|
2206 | +inline void set_sl_rr(FM_OPL *OPL, int slot, int v) {
|
---|
2207 | + OPL_CH *CH = &OPL->P_CH[slot>>1];
|
---|
2208 | + OPL_SLOT *SLOT = &CH->SLOT[slot & 1];
|
---|
2209 | + int sl = v >> 4;
|
---|
2210 | + int rr = v & 0x0f;
|
---|
2211 | +
|
---|
2212 | + SLOT->SL = SL_TABLE[sl];
|
---|
2213 | + if(SLOT->evm == ENV_MOD_DR)
|
---|
2214 | + SLOT->eve = SLOT->SL;
|
---|
2215 | + SLOT->RR = &OPL->DR_TABLE[rr<<2];
|
---|
2216 | + SLOT->evsr = SLOT->RR[SLOT->ksr];
|
---|
2217 | + if(SLOT->evm == ENV_MOD_RR)
|
---|
2218 | + SLOT->evs = SLOT->evsr;
|
---|
2219 | +}
|
---|
2220 | +
|
---|
2221 | +/* operator output calcrator */
|
---|
2222 | +
|
---|
2223 | +#define OP_OUT(slot,env,con) slot->wavetable[((slot->Cnt + con)>>(24-SIN_ENT_SHIFT)) & (SIN_ENT-1)][env]
|
---|
2224 | +/* ---------- calcrate one of channel ---------- */
|
---|
2225 | +inline void OPL_CALC_CH(OPL_CH *CH) {
|
---|
2226 | + uint env_out;
|
---|
2227 | + OPL_SLOT *SLOT;
|
---|
2228 | +
|
---|
2229 | + feedback2 = 0;
|
---|
2230 | + /* SLOT 1 */
|
---|
2231 | + SLOT = &CH->SLOT[SLOT1];
|
---|
2232 | + env_out=OPL_CALC_SLOT(SLOT);
|
---|
2233 | + if(env_out < (uint)(EG_ENT - 1)) {
|
---|
2234 | + /* PG */
|
---|
2235 | + if(SLOT->vib)
|
---|
2236 | + SLOT->Cnt += (SLOT->Incr * vib) >> VIB_RATE_SHIFT;
|
---|
2237 | + else
|
---|
2238 | + SLOT->Cnt += SLOT->Incr;
|
---|
2239 | + /* connection */
|
---|
2240 | + if(CH->FB) {
|
---|
2241 | + int feedback1 = (CH->op1_out[0] + CH->op1_out[1]) >> CH->FB;
|
---|
2242 | + CH->op1_out[1] = CH->op1_out[0];
|
---|
2243 | + *CH->connect1 += CH->op1_out[0] = OP_OUT(SLOT, env_out, feedback1);
|
---|
2244 | + } else {
|
---|
2245 | + *CH->connect1 += OP_OUT(SLOT, env_out, 0);
|
---|
2246 | + }
|
---|
2247 | + } else {
|
---|
2248 | + CH->op1_out[1] = CH->op1_out[0];
|
---|
2249 | + CH->op1_out[0] = 0;
|
---|
2250 | + }
|
---|
2251 | + /* SLOT 2 */
|
---|
2252 | + SLOT = &CH->SLOT[SLOT2];
|
---|
2253 | + env_out=OPL_CALC_SLOT(SLOT);
|
---|
2254 | + if(env_out < (uint)(EG_ENT - 1)) {
|
---|
2255 | + /* PG */
|
---|
2256 | + if(SLOT->vib)
|
---|
2257 | + SLOT->Cnt += (SLOT->Incr * vib) >> VIB_RATE_SHIFT;
|
---|
2258 | + else
|
---|
2259 | + SLOT->Cnt += SLOT->Incr;
|
---|
2260 | + /* connection */
|
---|
2261 | + outd[0] += OP_OUT(SLOT, env_out, feedback2);
|
---|
2262 | + }
|
---|
2263 | +}
|
---|
2264 | +
|
---|
2265 | +/* ---------- calcrate rythm block ---------- */
|
---|
2266 | +#define WHITE_NOISE_db 6.0
|
---|
2267 | +inline void OPL_CALC_RH(FM_OPL *OPL, OPL_CH *CH) {
|
---|
2268 | + uint env_tam, env_sd, env_top, env_hh;
|
---|
2269 | + // This code used to do int(OPL->rnd.getRandomBit() * (WHITE_NOISE_db / EG_STEP)),
|
---|
2270 | + // but EG_STEP = 96.0/EG_ENT, and WHITE_NOISE_db=6.0. So, that's equivalent to
|
---|
2271 | + // int(OPL->rnd.getRandomBit() * EG_ENT/16). We know that EG_ENT is 4096, or 1024,
|
---|
2272 | + // or 128, so we can safely avoid any FP ops.
|
---|
2273 | + int whitenoise = OPL->rnd.getRandomBit() * (EG_ENT>>4);
|
---|
2274 | +
|
---|
2275 | + int tone8;
|
---|
2276 | +
|
---|
2277 | + OPL_SLOT *SLOT;
|
---|
2278 | + int env_out;
|
---|
2279 | +
|
---|
2280 | + /* BD : same as FM serial mode and output level is large */
|
---|
2281 | + feedback2 = 0;
|
---|
2282 | + /* SLOT 1 */
|
---|
2283 | + SLOT = &CH[6].SLOT[SLOT1];
|
---|
2284 | + env_out = OPL_CALC_SLOT(SLOT);
|
---|
2285 | + if(env_out < EG_ENT-1) {
|
---|
2286 | + /* PG */
|
---|
2287 | + if(SLOT->vib)
|
---|
2288 | + SLOT->Cnt += (SLOT->Incr * vib) >> VIB_RATE_SHIFT;
|
---|
2289 | + else
|
---|
2290 | + SLOT->Cnt += SLOT->Incr;
|
---|
2291 | + /* connection */
|
---|
2292 | + if(CH[6].FB) {
|
---|
2293 | + int feedback1 = (CH[6].op1_out[0] + CH[6].op1_out[1]) >> CH[6].FB;
|
---|
2294 | + CH[6].op1_out[1] = CH[6].op1_out[0];
|
---|
2295 | + feedback2 = CH[6].op1_out[0] = OP_OUT(SLOT, env_out, feedback1);
|
---|
2296 | + }
|
---|
2297 | + else {
|
---|
2298 | + feedback2 = OP_OUT(SLOT, env_out, 0);
|
---|
2299 | + }
|
---|
2300 | + } else {
|
---|
2301 | + feedback2 = 0;
|
---|
2302 | + CH[6].op1_out[1] = CH[6].op1_out[0];
|
---|
2303 | + CH[6].op1_out[0] = 0;
|
---|
2304 | + }
|
---|
2305 | + /* SLOT 2 */
|
---|
2306 | + SLOT = &CH[6].SLOT[SLOT2];
|
---|
2307 | + env_out = OPL_CALC_SLOT(SLOT);
|
---|
2308 | + if(env_out < EG_ENT-1) {
|
---|
2309 | + /* PG */
|
---|
2310 | + if(SLOT->vib)
|
---|
2311 | + SLOT->Cnt += (SLOT->Incr * vib) >> VIB_RATE_SHIFT;
|
---|
2312 | + else
|
---|
2313 | + SLOT->Cnt += SLOT->Incr;
|
---|
2314 | + /* connection */
|
---|
2315 | + outd[0] += OP_OUT(SLOT, env_out, feedback2) * 2;
|
---|
2316 | + }
|
---|
2317 | +
|
---|
2318 | + // SD (17) = mul14[fnum7] + white noise
|
---|
2319 | + // TAM (15) = mul15[fnum8]
|
---|
2320 | + // TOP (18) = fnum6(mul18[fnum8]+whitenoise)
|
---|
2321 | + // HH (14) = fnum7(mul18[fnum8]+whitenoise) + white noise
|
---|
2322 | + env_sd = OPL_CALC_SLOT(SLOT7_2) + whitenoise;
|
---|
2323 | + env_tam =OPL_CALC_SLOT(SLOT8_1);
|
---|
2324 | + env_top = OPL_CALC_SLOT(SLOT8_2);
|
---|
2325 | + env_hh = OPL_CALC_SLOT(SLOT7_1) + whitenoise;
|
---|
2326 | +
|
---|
2327 | + /* PG */
|
---|
2328 | + if(SLOT7_1->vib)
|
---|
2329 | + SLOT7_1->Cnt += (SLOT7_1->Incr * vib) >> (VIB_RATE_SHIFT-1);
|
---|
2330 | + else
|
---|
2331 | + SLOT7_1->Cnt += 2 * SLOT7_1->Incr;
|
---|
2332 | + if(SLOT7_2->vib)
|
---|
2333 | + SLOT7_2->Cnt += (CH[7].fc * vib) >> (VIB_RATE_SHIFT-3);
|
---|
2334 | + else
|
---|
2335 | + SLOT7_2->Cnt += (CH[7].fc * 8);
|
---|
2336 | + if(SLOT8_1->vib)
|
---|
2337 | + SLOT8_1->Cnt += (SLOT8_1->Incr * vib) >> VIB_RATE_SHIFT;
|
---|
2338 | + else
|
---|
2339 | + SLOT8_1->Cnt += SLOT8_1->Incr;
|
---|
2340 | + if(SLOT8_2->vib)
|
---|
2341 | + SLOT8_2->Cnt += ((CH[8].fc * 3) * vib) >> (VIB_RATE_SHIFT-4);
|
---|
2342 | + else
|
---|
2343 | + SLOT8_2->Cnt += (CH[8].fc * 48);
|
---|
2344 | +
|
---|
2345 | + tone8 = OP_OUT(SLOT8_2,whitenoise,0 );
|
---|
2346 | +
|
---|
2347 | + /* SD */
|
---|
2348 | + if(env_sd < (uint)(EG_ENT - 1))
|
---|
2349 | + outd[0] += OP_OUT(SLOT7_1, env_sd, 0) * 8;
|
---|
2350 | + /* TAM */
|
---|
2351 | + if(env_tam < (uint)(EG_ENT - 1))
|
---|
2352 | + outd[0] += OP_OUT(SLOT8_1, env_tam, 0) * 2;
|
---|
2353 | + /* TOP-CY */
|
---|
2354 | + if(env_top < (uint)(EG_ENT - 1))
|
---|
2355 | + outd[0] += OP_OUT(SLOT7_2, env_top, tone8) * 2;
|
---|
2356 | + /* HH */
|
---|
2357 | + if(env_hh < (uint)(EG_ENT-1))
|
---|
2358 | + outd[0] += OP_OUT(SLOT7_2, env_hh, tone8) * 2;
|
---|
2359 | +}
|
---|
2360 | +
|
---|
2361 | +/* ----------- initialize time tabls ----------- */
|
---|
2362 | +static void init_timetables(FM_OPL *OPL, int ARRATE, int DRRATE) {
|
---|
2363 | + int i;
|
---|
2364 | + double rate;
|
---|
2365 | +
|
---|
2366 | + /* make attack rate & decay rate tables */
|
---|
2367 | + for (i = 0; i < 4; i++)
|
---|
2368 | + OPL->AR_TABLE[i] = OPL->DR_TABLE[i] = 0;
|
---|
2369 | + for (i = 4; i <= 60; i++) {
|
---|
2370 | + rate = OPL->freqbase; /* frequency rate */
|
---|
2371 | + if(i < 60)
|
---|
2372 | + rate *= 1.0 + (i & 3) * 0.25; /* b0-1 : x1 , x1.25 , x1.5 , x1.75 */
|
---|
2373 | + rate *= 1 << ((i >> 2) - 1); /* b2-5 : shift bit */
|
---|
2374 | + rate *= (double)(EG_ENT << ENV_BITS);
|
---|
2375 | + OPL->AR_TABLE[i] = (int)(rate / ARRATE);
|
---|
2376 | + OPL->DR_TABLE[i] = (int)(rate / DRRATE);
|
---|
2377 | + }
|
---|
2378 | + for (i = 60; i < 76; i++) {
|
---|
2379 | + OPL->AR_TABLE[i] = EG_AED-1;
|
---|
2380 | + OPL->DR_TABLE[i] = OPL->DR_TABLE[60];
|
---|
2381 | + }
|
---|
2382 | +}
|
---|
2383 | +
|
---|
2384 | +/* ---------- generic table initialize ---------- */
|
---|
2385 | +static int OPLOpenTable(void) {
|
---|
2386 | + int s,t;
|
---|
2387 | + double rate;
|
---|
2388 | + int i,j;
|
---|
2389 | + double pom;
|
---|
2390 | +
|
---|
2391 | +#ifdef __DS__
|
---|
2392 | + DS::fastRamReset();
|
---|
2393 | +
|
---|
2394 | + TL_TABLE = (int *) DS::fastRamAlloc(TL_MAX * 2 * sizeof(int *));
|
---|
2395 | + SIN_TABLE = (int **) DS::fastRamAlloc(SIN_ENT * 4 * sizeof(int *));
|
---|
2396 | +#else
|
---|
2397 | +
|
---|
2398 | + /* allocate dynamic tables */
|
---|
2399 | + if((TL_TABLE = (int *)malloc(TL_MAX * 2 * sizeof(int))) == NULL)
|
---|
2400 | + return 0;
|
---|
2401 | +
|
---|
2402 | + if((SIN_TABLE = (int **)malloc(SIN_ENT * 4 * sizeof(int *))) == NULL) {
|
---|
2403 | + free(TL_TABLE);
|
---|
2404 | + return 0;
|
---|
2405 | + }
|
---|
2406 | +#endif
|
---|
2407 | +
|
---|
2408 | + if((AMS_TABLE = (int *)malloc(AMS_ENT * 2 * sizeof(int))) == NULL) {
|
---|
2409 | + free(TL_TABLE);
|
---|
2410 | + free(SIN_TABLE);
|
---|
2411 | + return 0;
|
---|
2412 | + }
|
---|
2413 | +
|
---|
2414 | + if((VIB_TABLE = (int *)malloc(VIB_ENT * 2 * sizeof(int))) == NULL) {
|
---|
2415 | + free(TL_TABLE);
|
---|
2416 | + free(SIN_TABLE);
|
---|
2417 | + free(AMS_TABLE);
|
---|
2418 | + return 0;
|
---|
2419 | + }
|
---|
2420 | + /* make total level table */
|
---|
2421 | + for (t = 0; t < EG_ENT - 1 ; t++) {
|
---|
2422 | + rate = ((1 << TL_BITS) - 1) / pow(10.0, EG_STEP * t / 20); /* dB -> voltage */
|
---|
2423 | + TL_TABLE[ t] = (int)rate;
|
---|
2424 | + TL_TABLE[TL_MAX + t] = -TL_TABLE[t];
|
---|
2425 | + }
|
---|
2426 | + /* fill volume off area */
|
---|
2427 | + for (t = EG_ENT - 1; t < TL_MAX; t++) {
|
---|
2428 | + TL_TABLE[t] = TL_TABLE[TL_MAX + t] = 0;
|
---|
2429 | + }
|
---|
2430 | +
|
---|
2431 | + /* make sinwave table (total level offet) */
|
---|
2432 | + /* degree 0 = degree 180 = off */
|
---|
2433 | + SIN_TABLE[0] = SIN_TABLE[SIN_ENT /2 ] = &TL_TABLE[EG_ENT - 1];
|
---|
2434 | + for (s = 1;s <= SIN_ENT / 4; s++) {
|
---|
2435 | + pom = sin(2 * PI * s / SIN_ENT); /* sin */
|
---|
2436 | + pom = 20 * log10(1 / pom); /* decibel */
|
---|
2437 | + j = int(pom / EG_STEP); /* TL_TABLE steps */
|
---|
2438 | +
|
---|
2439 | + /* degree 0 - 90 , degree 180 - 90 : plus section */
|
---|
2440 | + SIN_TABLE[ s] = SIN_TABLE[SIN_ENT / 2 - s] = &TL_TABLE[j];
|
---|
2441 | + /* degree 180 - 270 , degree 360 - 270 : minus section */
|
---|
2442 | + SIN_TABLE[SIN_ENT / 2 + s] = SIN_TABLE[SIN_ENT - s] = &TL_TABLE[TL_MAX + j];
|
---|
2443 | + }
|
---|
2444 | + for (s = 0;s < SIN_ENT; s++) {
|
---|
2445 | + SIN_TABLE[SIN_ENT * 1 + s] = s < (SIN_ENT / 2) ? SIN_TABLE[s] : &TL_TABLE[EG_ENT];
|
---|
2446 | + SIN_TABLE[SIN_ENT * 2 + s] = SIN_TABLE[s % (SIN_ENT / 2)];
|
---|
2447 | + SIN_TABLE[SIN_ENT * 3 + s] = (s / (SIN_ENT / 4)) & 1 ? &TL_TABLE[EG_ENT] : SIN_TABLE[SIN_ENT * 2 + s];
|
---|
2448 | + }
|
---|
2449 | +
|
---|
2450 | +
|
---|
2451 | + ENV_CURVE = (int *)malloc(sizeof(int) * (2*EG_ENT+1));
|
---|
2452 | +
|
---|
2453 | + /* envelope counter -> envelope output table */
|
---|
2454 | + for (i=0; i < EG_ENT; i++) {
|
---|
2455 | + /* ATTACK curve */
|
---|
2456 | + pom = pow(((double)(EG_ENT - 1 - i) / EG_ENT), 8) * EG_ENT;
|
---|
2457 | + /* if( pom >= EG_ENT ) pom = EG_ENT-1; */
|
---|
2458 | + ENV_CURVE[i] = (int)pom;
|
---|
2459 | + /* DECAY ,RELEASE curve */
|
---|
2460 | + ENV_CURVE[(EG_DST >> ENV_BITS) + i]= i;
|
---|
2461 | + }
|
---|
2462 | + /* off */
|
---|
2463 | + ENV_CURVE[EG_OFF >> ENV_BITS]= EG_ENT - 1;
|
---|
2464 | + /* make LFO ams table */
|
---|
2465 | + for (i=0; i < AMS_ENT; i++) {
|
---|
2466 | + pom = (1.0 + sin(2 * PI * i / AMS_ENT)) / 2; /* sin */
|
---|
2467 | + AMS_TABLE[i] = (int)((1.0 / EG_STEP) * pom); /* 1dB */
|
---|
2468 | + AMS_TABLE[AMS_ENT + i] = (int)((4.8 / EG_STEP) * pom); /* 4.8dB */
|
---|
2469 | + }
|
---|
2470 | + /* make LFO vibrate table */
|
---|
2471 | + for (i=0; i < VIB_ENT; i++) {
|
---|
2472 | + /* 100cent = 1seminote = 6% ?? */
|
---|
2473 | + pom = (double)VIB_RATE * 0.06 * sin(2 * PI * i / VIB_ENT); /* +-100sect step */
|
---|
2474 | + VIB_TABLE[i] = (int)(VIB_RATE + (pom * 0.07)); /* +- 7cent */
|
---|
2475 | + VIB_TABLE[VIB_ENT + i] = (int)(VIB_RATE + (pom * 0.14)); /* +-14cent */
|
---|
2476 | + }
|
---|
2477 | + return 1;
|
---|
2478 | +}
|
---|
2479 | +
|
---|
2480 | +static void OPLCloseTable(void) {
|
---|
2481 | + free(TL_TABLE);
|
---|
2482 | + free(SIN_TABLE);
|
---|
2483 | + free(AMS_TABLE);
|
---|
2484 | + free(VIB_TABLE);
|
---|
2485 | + free(ENV_CURVE);
|
---|
2486 | +}
|
---|
2487 | +
|
---|
2488 | +/* CSM Key Controll */
|
---|
2489 | +inline void CSMKeyControll(OPL_CH *CH) {
|
---|
2490 | + OPL_SLOT *slot1 = &CH->SLOT[SLOT1];
|
---|
2491 | + OPL_SLOT *slot2 = &CH->SLOT[SLOT2];
|
---|
2492 | + /* all key off */
|
---|
2493 | + OPL_KEYOFF(slot1);
|
---|
2494 | + OPL_KEYOFF(slot2);
|
---|
2495 | + /* total level latch */
|
---|
2496 | + slot1->TLL = slot1->TL + (CH->ksl_base>>slot1->ksl);
|
---|
2497 | + slot1->TLL = slot1->TL + (CH->ksl_base>>slot1->ksl);
|
---|
2498 | + /* key on */
|
---|
2499 | + CH->op1_out[0] = CH->op1_out[1] = 0;
|
---|
2500 | + OPL_KEYON(slot1);
|
---|
2501 | + OPL_KEYON(slot2);
|
---|
2502 | +}
|
---|
2503 | +
|
---|
2504 | +/* ---------- opl initialize ---------- */
|
---|
2505 | +static void OPL_initalize(FM_OPL *OPL) {
|
---|
2506 | + int fn;
|
---|
2507 | +
|
---|
2508 | + /* frequency base */
|
---|
2509 | + OPL->freqbase = (OPL->rate) ? ((double)OPL->clock / OPL->rate) / 72 : 0;
|
---|
2510 | + /* Timer base time */
|
---|
2511 | + OPL->TimerBase = 1.0/((double)OPL->clock / 72.0 );
|
---|
2512 | + /* make time tables */
|
---|
2513 | + init_timetables(OPL, OPL_ARRATE, OPL_DRRATE);
|
---|
2514 | + /* make fnumber -> increment counter table */
|
---|
2515 | + for( fn=0; fn < 1024; fn++) {
|
---|
2516 | + OPL->FN_TABLE[fn] = (uint)(OPL->freqbase * fn * FREQ_RATE * (1<<7) / 2);
|
---|
2517 | + }
|
---|
2518 | + /* LFO freq.table */
|
---|
2519 | + OPL->amsIncr = (int)(OPL->rate ? (double)AMS_ENT * (1 << AMS_SHIFT) / OPL->rate * 3.7 * ((double)OPL->clock/3600000) : 0);
|
---|
2520 | + OPL->vibIncr = (int)(OPL->rate ? (double)VIB_ENT * (1 << VIB_SHIFT) / OPL->rate * 6.4 * ((double)OPL->clock/3600000) : 0);
|
---|
2521 | +}
|
---|
2522 | +
|
---|
2523 | +/* ---------- write a OPL registers ---------- */
|
---|
2524 | +void OPLWriteReg(FM_OPL *OPL, int r, int v) {
|
---|
2525 | + OPL_CH *CH;
|
---|
2526 | + int slot;
|
---|
2527 | + uint block_fnum;
|
---|
2528 | +
|
---|
2529 | + switch(r & 0xe0) {
|
---|
2530 | + case 0x00: /* 00-1f:controll */
|
---|
2531 | + switch(r & 0x1f) {
|
---|
2532 | + case 0x01:
|
---|
2533 | + /* wave selector enable */
|
---|
2534 | + if(OPL->type&OPL_TYPE_WAVESEL) {
|
---|
2535 | + OPL->wavesel = v & 0x20;
|
---|
2536 | + if(!OPL->wavesel) {
|
---|
2537 | + /* preset compatible mode */
|
---|
2538 | + int c;
|
---|
2539 | + for(c=0; c<OPL->max_ch; c++) {
|
---|
2540 | + OPL->P_CH[c].SLOT[SLOT1].wavetable = &SIN_TABLE[0];
|
---|
2541 | + OPL->P_CH[c].SLOT[SLOT2].wavetable = &SIN_TABLE[0];
|
---|
2542 | + }
|
---|
2543 | + }
|
---|
2544 | + }
|
---|
2545 | + return;
|
---|
2546 | + case 0x02: /* Timer 1 */
|
---|
2547 | + OPL->T[0] = (256-v) * 4;
|
---|
2548 | + break;
|
---|
2549 | + case 0x03: /* Timer 2 */
|
---|
2550 | + OPL->T[1] = (256-v) * 16;
|
---|
2551 | + return;
|
---|
2552 | + case 0x04: /* IRQ clear / mask and Timer enable */
|
---|
2553 | + if(v & 0x80) { /* IRQ flag clear */
|
---|
2554 | + OPL_STATUS_RESET(OPL, 0x7f);
|
---|
2555 | + } else { /* set IRQ mask ,timer enable*/
|
---|
2556 | + uint8 st1 = v & 1;
|
---|
2557 | + uint8 st2 = (v >> 1) & 1;
|
---|
2558 | + /* IRQRST,T1MSK,t2MSK,EOSMSK,BRMSK,x,ST2,ST1 */
|
---|
2559 | + OPL_STATUS_RESET(OPL, v & 0x78);
|
---|
2560 | + OPL_STATUSMASK_SET(OPL,((~v) & 0x78) | 0x01);
|
---|
2561 | + /* timer 2 */
|
---|
2562 | + if(OPL->st[1] != st2) {
|
---|
2563 | + double interval = st2 ? (double)OPL->T[1] * OPL->TimerBase : 0.0;
|
---|
2564 | + OPL->st[1] = st2;
|
---|
2565 | + if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam + 1, interval);
|
---|
2566 | + }
|
---|
2567 | + /* timer 1 */
|
---|
2568 | + if(OPL->st[0] != st1) {
|
---|
2569 | + double interval = st1 ? (double)OPL->T[0] * OPL->TimerBase : 0.0;
|
---|
2570 | + OPL->st[0] = st1;
|
---|
2571 | + if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam + 0, interval);
|
---|
2572 | + }
|
---|
2573 | + }
|
---|
2574 | + return;
|
---|
2575 | + }
|
---|
2576 | + break;
|
---|
2577 | + case 0x20: /* am,vib,ksr,eg type,mul */
|
---|
2578 | + slot = slot_array[r&0x1f];
|
---|
2579 | + if(slot == -1)
|
---|
2580 | + return;
|
---|
2581 | + set_mul(OPL,slot,v);
|
---|
2582 | + return;
|
---|
2583 | + case 0x40:
|
---|
2584 | + slot = slot_array[r&0x1f];
|
---|
2585 | + if(slot == -1)
|
---|
2586 | + return;
|
---|
2587 | + set_ksl_tl(OPL,slot,v);
|
---|
2588 | + return;
|
---|
2589 | + case 0x60:
|
---|
2590 | + slot = slot_array[r&0x1f];
|
---|
2591 | + if(slot == -1)
|
---|
2592 | + return;
|
---|
2593 | + set_ar_dr(OPL,slot,v);
|
---|
2594 | + return;
|
---|
2595 | + case 0x80:
|
---|
2596 | + slot = slot_array[r&0x1f];
|
---|
2597 | + if(slot == -1)
|
---|
2598 | + return;
|
---|
2599 | + set_sl_rr(OPL,slot,v);
|
---|
2600 | + return;
|
---|
2601 | + case 0xa0:
|
---|
2602 | + switch(r) {
|
---|
2603 | + case 0xbd:
|
---|
2604 | + /* amsep,vibdep,r,bd,sd,tom,tc,hh */
|
---|
2605 | + {
|
---|
2606 | + uint8 rkey = OPL->rythm ^ v;
|
---|
2607 | + OPL->ams_table = &AMS_TABLE[v & 0x80 ? AMS_ENT : 0];
|
---|
2608 | + OPL->vib_table = &VIB_TABLE[v & 0x40 ? VIB_ENT : 0];
|
---|
2609 | + OPL->rythm = v & 0x3f;
|
---|
2610 | + if(OPL->rythm & 0x20) {
|
---|
2611 | + /* BD key on/off */
|
---|
2612 | + if(rkey & 0x10) {
|
---|
2613 | + if(v & 0x10) {
|
---|
2614 | + OPL->P_CH[6].op1_out[0] = OPL->P_CH[6].op1_out[1] = 0;
|
---|
2615 | + OPL_KEYON(&OPL->P_CH[6].SLOT[SLOT1]);
|
---|
2616 | + OPL_KEYON(&OPL->P_CH[6].SLOT[SLOT2]);
|
---|
2617 | + } else {
|
---|
2618 | + OPL_KEYOFF(&OPL->P_CH[6].SLOT[SLOT1]);
|
---|
2619 | + OPL_KEYOFF(&OPL->P_CH[6].SLOT[SLOT2]);
|
---|
2620 | + }
|
---|
2621 | + }
|
---|
2622 | + /* SD key on/off */
|
---|
2623 | + if(rkey & 0x08) {
|
---|
2624 | + if(v & 0x08)
|
---|
2625 | + OPL_KEYON(&OPL->P_CH[7].SLOT[SLOT2]);
|
---|
2626 | + else
|
---|
2627 | + OPL_KEYOFF(&OPL->P_CH[7].SLOT[SLOT2]);
|
---|
2628 | + }/* TAM key on/off */
|
---|
2629 | + if(rkey & 0x04) {
|
---|
2630 | + if(v & 0x04)
|
---|
2631 | + OPL_KEYON(&OPL->P_CH[8].SLOT[SLOT1]);
|
---|
2632 | + else
|
---|
2633 | + OPL_KEYOFF(&OPL->P_CH[8].SLOT[SLOT1]);
|
---|
2634 | + }
|
---|
2635 | + /* TOP-CY key on/off */
|
---|
2636 | + if(rkey & 0x02) {
|
---|
2637 | + if(v & 0x02)
|
---|
2638 | + OPL_KEYON(&OPL->P_CH[8].SLOT[SLOT2]);
|
---|
2639 | + else
|
---|
2640 | + OPL_KEYOFF(&OPL->P_CH[8].SLOT[SLOT2]);
|
---|
2641 | + }
|
---|
2642 | + /* HH key on/off */
|
---|
2643 | + if(rkey & 0x01) {
|
---|
2644 | + if(v & 0x01)
|
---|
2645 | + OPL_KEYON(&OPL->P_CH[7].SLOT[SLOT1]);
|
---|
2646 | + else
|
---|
2647 | + OPL_KEYOFF(&OPL->P_CH[7].SLOT[SLOT1]);
|
---|
2648 | + }
|
---|
2649 | + }
|
---|
2650 | + }
|
---|
2651 | + return;
|
---|
2652 | +
|
---|
2653 | + default:
|
---|
2654 | + break;
|
---|
2655 | + }
|
---|
2656 | + /* keyon,block,fnum */
|
---|
2657 | + if((r & 0x0f) > 8)
|
---|
2658 | + return;
|
---|
2659 | + CH = &OPL->P_CH[r & 0x0f];
|
---|
2660 | + if(!(r&0x10)) { /* a0-a8 */
|
---|
2661 | + block_fnum = (CH->block_fnum & 0x1f00) | v;
|
---|
2662 | + } else { /* b0-b8 */
|
---|
2663 | + int keyon = (v >> 5) & 1;
|
---|
2664 | + block_fnum = ((v & 0x1f) << 8) | (CH->block_fnum & 0xff);
|
---|
2665 | + if(CH->keyon != keyon) {
|
---|
2666 | + if((CH->keyon=keyon)) {
|
---|
2667 | + CH->op1_out[0] = CH->op1_out[1] = 0;
|
---|
2668 | + OPL_KEYON(&CH->SLOT[SLOT1]);
|
---|
2669 | + OPL_KEYON(&CH->SLOT[SLOT2]);
|
---|
2670 | + } else {
|
---|
2671 | + OPL_KEYOFF(&CH->SLOT[SLOT1]);
|
---|
2672 | + OPL_KEYOFF(&CH->SLOT[SLOT2]);
|
---|
2673 | + }
|
---|
2674 | + }
|
---|
2675 | + }
|
---|
2676 | + /* update */
|
---|
2677 | + if(CH->block_fnum != block_fnum) {
|
---|
2678 | + int blockRv = 7 - (block_fnum >> 10);
|
---|
2679 | + int fnum = block_fnum & 0x3ff;
|
---|
2680 | + CH->block_fnum = block_fnum;
|
---|
2681 | + CH->ksl_base = KSL_TABLE[block_fnum >> 6];
|
---|
2682 | + CH->fc = OPL->FN_TABLE[fnum] >> blockRv;
|
---|
2683 | + CH->kcode = CH->block_fnum >> 9;
|
---|
2684 | + if((OPL->mode & 0x40) && CH->block_fnum & 0x100)
|
---|
2685 | + CH->kcode |=1;
|
---|
2686 | + CALC_FCSLOT(CH,&CH->SLOT[SLOT1]);
|
---|
2687 | + CALC_FCSLOT(CH,&CH->SLOT[SLOT2]);
|
---|
2688 | + }
|
---|
2689 | + return;
|
---|
2690 | + case 0xc0:
|
---|
2691 | + /* FB,C */
|
---|
2692 | + if((r & 0x0f) > 8)
|
---|
2693 | + return;
|
---|
2694 | + CH = &OPL->P_CH[r&0x0f];
|
---|
2695 | + {
|
---|
2696 | + int feedback = (v >> 1) & 7;
|
---|
2697 | + CH->FB = feedback ? (8 + 1) - feedback : 0;
|
---|
2698 | + CH->CON = v & 1;
|
---|
2699 | + set_algorythm(CH);
|
---|
2700 | + }
|
---|
2701 | + return;
|
---|
2702 | + case 0xe0: /* wave type */
|
---|
2703 | + slot = slot_array[r & 0x1f];
|
---|
2704 | + if(slot == -1)
|
---|
2705 | + return;
|
---|
2706 | + CH = &OPL->P_CH[slot>>1];
|
---|
2707 | + if(OPL->wavesel) {
|
---|
2708 | + CH->SLOT[slot&1].wavetable = &SIN_TABLE[(v & 0x03) * SIN_ENT];
|
---|
2709 | + }
|
---|
2710 | + return;
|
---|
2711 | + }
|
---|
2712 | +}
|
---|
2713 | +
|
---|
2714 | +/* lock/unlock for common table */
|
---|
2715 | +static int OPL_LockTable(void) {
|
---|
2716 | + num_lock++;
|
---|
2717 | + if(num_lock>1)
|
---|
2718 | + return 0;
|
---|
2719 | + /* first time */
|
---|
2720 | + cur_chip = NULL;
|
---|
2721 | + /* allocate total level table (128kb space) */
|
---|
2722 | + if(!OPLOpenTable()) {
|
---|
2723 | + num_lock--;
|
---|
2724 | + return -1;
|
---|
2725 | + }
|
---|
2726 | + return 0;
|
---|
2727 | +}
|
---|
2728 | +
|
---|
2729 | +static void OPL_UnLockTable(void) {
|
---|
2730 | + if(num_lock)
|
---|
2731 | + num_lock--;
|
---|
2732 | + if(num_lock)
|
---|
2733 | + return;
|
---|
2734 | + /* last time */
|
---|
2735 | + cur_chip = NULL;
|
---|
2736 | + OPLCloseTable();
|
---|
2737 | +}
|
---|
2738 | +
|
---|
2739 | +/*******************************************************************************/
|
---|
2740 | +/* YM3812 local section */
|
---|
2741 | +/*******************************************************************************/
|
---|
2742 | +
|
---|
2743 | +/* ---------- update one of chip ----------- */
|
---|
2744 | +void YM3812UpdateOne(FM_OPL *OPL, int16 *buffer, int length, int interleave) {
|
---|
2745 | + int i;
|
---|
2746 | + int data;
|
---|
2747 | + int16 *buf = buffer;
|
---|
2748 | + uint amsCnt = OPL->amsCnt;
|
---|
2749 | + uint vibCnt = OPL->vibCnt;
|
---|
2750 | + uint8 rythm = OPL->rythm & 0x20;
|
---|
2751 | + OPL_CH *CH, *R_CH;
|
---|
2752 | +
|
---|
2753 | +
|
---|
2754 | + if((void *)OPL != cur_chip) {
|
---|
2755 | + cur_chip = (void *)OPL;
|
---|
2756 | + /* channel pointers */
|
---|
2757 | + S_CH = OPL->P_CH;
|
---|
2758 | + E_CH = &S_CH[9];
|
---|
2759 | + /* rythm slot */
|
---|
2760 | + SLOT7_1 = &S_CH[7].SLOT[SLOT1];
|
---|
2761 | + SLOT7_2 = &S_CH[7].SLOT[SLOT2];
|
---|
2762 | + SLOT8_1 = &S_CH[8].SLOT[SLOT1];
|
---|
2763 | + SLOT8_2 = &S_CH[8].SLOT[SLOT2];
|
---|
2764 | + /* LFO state */
|
---|
2765 | + amsIncr = OPL->amsIncr;
|
---|
2766 | + vibIncr = OPL->vibIncr;
|
---|
2767 | + ams_table = OPL->ams_table;
|
---|
2768 | + vib_table = OPL->vib_table;
|
---|
2769 | + }
|
---|
2770 | + R_CH = rythm ? &S_CH[6] : E_CH;
|
---|
2771 | + for(i = 0; i < length; i++) {
|
---|
2772 | + /* channel A channel B channel C */
|
---|
2773 | + /* LFO */
|
---|
2774 | + ams = ams_table[(amsCnt += amsIncr) >> AMS_SHIFT];
|
---|
2775 | + vib = vib_table[(vibCnt += vibIncr) >> VIB_SHIFT];
|
---|
2776 | + outd[0] = 0;
|
---|
2777 | + /* FM part */
|
---|
2778 | + for(CH=S_CH; CH < R_CH; CH++)
|
---|
2779 | + OPL_CALC_CH(CH);
|
---|
2780 | + /* Rythn part */
|
---|
2781 | + if(rythm)
|
---|
2782 | + OPL_CALC_RH(OPL, S_CH);
|
---|
2783 | + /* limit check */
|
---|
2784 | + data = CLIP(outd[0], OPL_MINOUT, OPL_MAXOUT);
|
---|
2785 | + /* store to sound buffer */
|
---|
2786 | + buf[i << interleave] = data >> OPL_OUTSB;
|
---|
2787 | + }
|
---|
2788 | +
|
---|
2789 | + OPL->amsCnt = amsCnt;
|
---|
2790 | + OPL->vibCnt = vibCnt;
|
---|
2791 | +}
|
---|
2792 | +
|
---|
2793 | +/* ---------- reset a chip ---------- */
|
---|
2794 | +void OPLResetChip(FM_OPL *OPL) {
|
---|
2795 | + int c,s;
|
---|
2796 | + int i;
|
---|
2797 | +
|
---|
2798 | + /* reset chip */
|
---|
2799 | + OPL->mode = 0; /* normal mode */
|
---|
2800 | + OPL_STATUS_RESET(OPL, 0x7f);
|
---|
2801 | + /* reset with register write */
|
---|
2802 | + OPLWriteReg(OPL, 0x01,0); /* wabesel disable */
|
---|
2803 | + OPLWriteReg(OPL, 0x02,0); /* Timer1 */
|
---|
2804 | + OPLWriteReg(OPL, 0x03,0); /* Timer2 */
|
---|
2805 | + OPLWriteReg(OPL, 0x04,0); /* IRQ mask clear */
|
---|
2806 | + for(i = 0xff; i >= 0x20; i--)
|
---|
2807 | + OPLWriteReg(OPL,i,0);
|
---|
2808 | + /* reset OPerator parameter */
|
---|
2809 | + for(c = 0; c < OPL->max_ch ;c++ ) {
|
---|
2810 | + OPL_CH *CH = &OPL->P_CH[c];
|
---|
2811 | + /* OPL->P_CH[c].PAN = OPN_CENTER; */
|
---|
2812 | + for(s = 0; s < 2; s++ ) {
|
---|
2813 | + /* wave table */
|
---|
2814 | + CH->SLOT[s].wavetable = &SIN_TABLE[0];
|
---|
2815 | + /* CH->SLOT[s].evm = ENV_MOD_RR; */
|
---|
2816 | + CH->SLOT[s].evc = EG_OFF;
|
---|
2817 | + CH->SLOT[s].eve = EG_OFF + 1;
|
---|
2818 | + CH->SLOT[s].evs = 0;
|
---|
2819 | + }
|
---|
2820 | + }
|
---|
2821 | +}
|
---|
2822 | +
|
---|
2823 | +/* ---------- Create a virtual YM3812 ---------- */
|
---|
2824 | +/* 'rate' is sampling rate and 'bufsiz' is the size of the */
|
---|
2825 | +FM_OPL *OPLCreate(int type, int clock, int rate) {
|
---|
2826 | + char *ptr;
|
---|
2827 | + FM_OPL *OPL;
|
---|
2828 | + int state_size;
|
---|
2829 | + int max_ch = 9; /* normaly 9 channels */
|
---|
2830 | +
|
---|
2831 | + if( OPL_LockTable() == -1)
|
---|
2832 | + return NULL;
|
---|
2833 | + /* allocate OPL state space */
|
---|
2834 | + state_size = sizeof(FM_OPL);
|
---|
2835 | + state_size += sizeof(OPL_CH) * max_ch;
|
---|
2836 | +
|
---|
2837 | + /* allocate memory block */
|
---|
2838 | + ptr = (char *)calloc(state_size, 1);
|
---|
2839 | + if(ptr == NULL)
|
---|
2840 | + return NULL;
|
---|
2841 | +
|
---|
2842 | + /* clear */
|
---|
2843 | + memset(ptr, 0, state_size);
|
---|
2844 | + OPL = (FM_OPL *)ptr; ptr += sizeof(FM_OPL);
|
---|
2845 | + OPL->P_CH = (OPL_CH *)ptr; ptr += sizeof(OPL_CH) * max_ch;
|
---|
2846 | +
|
---|
2847 | + /* set channel state pointer */
|
---|
2848 | + OPL->type = type;
|
---|
2849 | + OPL->clock = clock;
|
---|
2850 | + OPL->rate = rate;
|
---|
2851 | + OPL->max_ch = max_ch;
|
---|
2852 | +
|
---|
2853 | + /* init grobal tables */
|
---|
2854 | + OPL_initalize(OPL);
|
---|
2855 | +
|
---|
2856 | + /* reset chip */
|
---|
2857 | + OPLResetChip(OPL);
|
---|
2858 | + return OPL;
|
---|
2859 | +}
|
---|
2860 | +
|
---|
2861 | +/* ---------- Destroy one of vietual YM3812 ---------- */
|
---|
2862 | +void OPLDestroy(FM_OPL *OPL) {
|
---|
2863 | + OPL_UnLockTable();
|
---|
2864 | + free(OPL);
|
---|
2865 | +}
|
---|
2866 | +
|
---|
2867 | +/* ---------- Option handlers ---------- */
|
---|
2868 | +void OPLSetTimerHandler(FM_OPL *OPL, OPL_TIMERHANDLER TimerHandler,int channelOffset) {
|
---|
2869 | + OPL->TimerHandler = TimerHandler;
|
---|
2870 | + OPL->TimerParam = channelOffset;
|
---|
2871 | +}
|
---|
2872 | +
|
---|
2873 | +void OPLSetIRQHandler(FM_OPL *OPL, OPL_IRQHANDLER IRQHandler, int param) {
|
---|
2874 | + OPL->IRQHandler = IRQHandler;
|
---|
2875 | + OPL->IRQParam = param;
|
---|
2876 | +}
|
---|
2877 | +
|
---|
2878 | +void OPLSetUpdateHandler(FM_OPL *OPL, OPL_UPDATEHANDLER UpdateHandler,int param) {
|
---|
2879 | + OPL->UpdateHandler = UpdateHandler;
|
---|
2880 | + OPL->UpdateParam = param;
|
---|
2881 | +}
|
---|
2882 | +
|
---|
2883 | +/* ---------- YM3812 I/O interface ---------- */
|
---|
2884 | +int OPLWrite(FM_OPL *OPL,int a,int v) {
|
---|
2885 | + if(!(a & 1)) { /* address port */
|
---|
2886 | + OPL->address = v & 0xff;
|
---|
2887 | + } else { /* data port */
|
---|
2888 | + if(OPL->UpdateHandler)
|
---|
2889 | + OPL->UpdateHandler(OPL->UpdateParam,0);
|
---|
2890 | + OPLWriteReg(OPL, OPL->address,v);
|
---|
2891 | + }
|
---|
2892 | + return OPL->status >> 7;
|
---|
2893 | +}
|
---|
2894 | +
|
---|
2895 | +unsigned char OPLRead(FM_OPL *OPL,int a) {
|
---|
2896 | + if(!(a & 1)) { /* status port */
|
---|
2897 | + return OPL->status & (OPL->statusmask | 0x80);
|
---|
2898 | + }
|
---|
2899 | + /* data port */
|
---|
2900 | + switch(OPL->address) {
|
---|
2901 | + case 0x05: /* KeyBoard IN */
|
---|
2902 | + warning("OPL:read unmapped KEYBOARD port\n");
|
---|
2903 | + return 0;
|
---|
2904 | + case 0x19: /* I/O DATA */
|
---|
2905 | + warning("OPL:read unmapped I/O port\n");
|
---|
2906 | + return 0;
|
---|
2907 | + case 0x1a: /* PCM-DATA */
|
---|
2908 | + return 0;
|
---|
2909 | + default:
|
---|
2910 | + break;
|
---|
2911 | + }
|
---|
2912 | + return 0;
|
---|
2913 | +}
|
---|
2914 | +
|
---|
2915 | +int OPLTimerOver(FM_OPL *OPL, int c) {
|
---|
2916 | + if(c) { /* Timer B */
|
---|
2917 | + OPL_STATUS_SET(OPL, 0x20);
|
---|
2918 | + } else { /* Timer A */
|
---|
2919 | + OPL_STATUS_SET(OPL, 0x40);
|
---|
2920 | + /* CSM mode key,TL controll */
|
---|
2921 | + if(OPL->mode & 0x80) { /* CSM mode total level latch and auto key on */
|
---|
2922 | + int ch;
|
---|
2923 | + if(OPL->UpdateHandler)
|
---|
2924 | + OPL->UpdateHandler(OPL->UpdateParam,0);
|
---|
2925 | + for(ch = 0; ch < 9; ch++)
|
---|
2926 | + CSMKeyControll(&OPL->P_CH[ch]);
|
---|
2927 | + }
|
---|
2928 | + }
|
---|
2929 | + /* reload timer */
|
---|
2930 | + if (OPL->TimerHandler)
|
---|
2931 | + (OPL->TimerHandler)(OPL->TimerParam + c, (double)OPL->T[c] * OPL->TimerBase);
|
---|
2932 | + return OPL->status >> 7;
|
---|
2933 | +}
|
---|
2934 | +
|
---|
2935 | +FM_OPL *makeAdlibOPL(int rate) {
|
---|
2936 | + // We need to emulate one YM3812 chip
|
---|
2937 | + int env_bits = FMOPL_ENV_BITS_HQ;
|
---|
2938 | + int eg_ent = FMOPL_EG_ENT_HQ;
|
---|
2939 | +#if defined (_WIN32_WCE) || defined(__SYMBIAN32__) || defined(PALMOS_MODE) || defined(__GP32__) || defined (GP2X) || defined(__MAEMO__) || defined(__DS__) || defined (__MINT__)
|
---|
2940 | + if (ConfMan.hasKey("FM_high_quality") && ConfMan.getBool("FM_high_quality")) {
|
---|
2941 | + env_bits = FMOPL_ENV_BITS_HQ;
|
---|
2942 | + eg_ent = FMOPL_EG_ENT_HQ;
|
---|
2943 | + } else if (ConfMan.hasKey("FM_medium_quality") && ConfMan.getBool("FM_medium_quality")) {
|
---|
2944 | + env_bits = FMOPL_ENV_BITS_MQ;
|
---|
2945 | + eg_ent = FMOPL_EG_ENT_MQ;
|
---|
2946 | + } else {
|
---|
2947 | + env_bits = FMOPL_ENV_BITS_LQ;
|
---|
2948 | + eg_ent = FMOPL_EG_ENT_LQ;
|
---|
2949 | + }
|
---|
2950 | +#endif
|
---|
2951 | +
|
---|
2952 | + OPLBuildTables(env_bits, eg_ent);
|
---|
2953 | + return OPLCreate(OPL_TYPE_YM3812, 3579545, rate);
|
---|
2954 | +}
|
---|
2955 | +
|
---|
2956 | +} // end of namespace MAME
|
---|
2957 | +} // end of namespace AdLib
|
---|
2958 | +
|
---|
2959 | Index: sound/softsynth/adlib/dbopl.cpp
|
---|
2960 | ===================================================================
|
---|
2961 | --- sound/softsynth/adlib/dbopl.cpp (revision 0)
|
---|
2962 | +++ sound/softsynth/adlib/dbopl.cpp (revision 0)
|
---|
2963 | @@ -0,0 +1,1468 @@
|
---|
2964 | +/*
|
---|
2965 | + * Copyright (C) 2002-2009 The DOSBox Team
|
---|
2966 | + *
|
---|
2967 | + * This program is free software; you can redistribute it and/or modify
|
---|
2968 | + * it under the terms of the GNU General Public License as published by
|
---|
2969 | + * the Free Software Foundation; either version 2 of the License, or
|
---|
2970 | + * (at your option) any later version.
|
---|
2971 | + *
|
---|
2972 | + * This program is distributed in the hope that it will be useful,
|
---|
2973 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
2974 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
2975 | + * GNU General Public License for more details.
|
---|
2976 | + *
|
---|
2977 | + * You should have received a copy of the GNU General Public License
|
---|
2978 | + * along with this program; if not, write to the Free Software
|
---|
2979 | + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
---|
2980 | + */
|
---|
2981 | +
|
---|
2982 | +/*
|
---|
2983 | + DOSBox implementation of a combined Yamaha YMF262 and Yamaha YM3812 emulator.
|
---|
2984 | + Enabling the opl3 bit will switch the emulator to stereo opl3 output instead of regular mono opl2
|
---|
2985 | + Except for the table generation it's all integer math
|
---|
2986 | + Can choose different types of generators, using muls and bigger tables, try different ones for slower platforms
|
---|
2987 | + The generation was based on the MAME implementation but tried to have it use less memory and be faster in general
|
---|
2988 | + MAME uses much bigger envelope tables and this will be the biggest cause of it sounding different at times
|
---|
2989 | +
|
---|
2990 | + //TODO Don't delay first operator 1 sample in opl3 mode
|
---|
2991 | + //TODO Maybe not use class method pointers but a regular function pointers with operator as first parameter
|
---|
2992 | + //TODO Fix panning for the Percussion channels, would any opl3 player use it and actually really change it though?
|
---|
2993 | + //TODO don't use variables in work structure for tremolo and vibrato but give the variables as parameters to GetSample
|
---|
2994 | + //TODO Since the vibrato takes 1024 samples it's easier to run the emulator in same vibrato chunks, vibrato would be costfree
|
---|
2995 | +
|
---|
2996 | + //DUNNO Keyon in 4op, switch to 2op without keyoff.
|
---|
2997 | +*/
|
---|
2998 | +
|
---|
2999 | +#ifndef DISABLE_DOSBOX_ADLIB
|
---|
3000 | +
|
---|
3001 | +#include "dbopl.h"
|
---|
3002 | +#include <stddef.h> // for ptrdiff_t
|
---|
3003 | +
|
---|
3004 | +#ifndef PI
|
---|
3005 | +#define PI 3.14159265358979323846
|
---|
3006 | +#endif
|
---|
3007 | +
|
---|
3008 | +#ifndef INLINE
|
---|
3009 | +#define INLINE
|
---|
3010 | +#endif
|
---|
3011 | +
|
---|
3012 | +#define OFFS(type,item) (((ptrdiff_t)(&((type*)42)->type::item))-42)
|
---|
3013 | +
|
---|
3014 | +namespace AdLib {
|
---|
3015 | +namespace DOSBox {
|
---|
3016 | +namespace DBOPL {
|
---|
3017 | +
|
---|
3018 | +#define MAX_SAMPLES 256
|
---|
3019 | +#define OPLRATE ((double)(14318180.0 / 288.0))
|
---|
3020 | +
|
---|
3021 | +//Only need 4 valid bits at the top for vibrato
|
---|
3022 | +#define VIBRATO_SH ( 32 - 4 )
|
---|
3023 | +//Need 6 bits of accuracy
|
---|
3024 | +#define TREMOLO_SH ( 32 - 6 )
|
---|
3025 | +#define TREMOLO_TABLE 52
|
---|
3026 | +
|
---|
3027 | +//Wave bits available in the top of the 32bit range
|
---|
3028 | +//Original adlib uses 10.10, we use 12.20
|
---|
3029 | +//Have to keep some bits in the top to allow for freqmul 0.5
|
---|
3030 | +#define WAVE_BITS 12
|
---|
3031 | +#define WAVE_SH ( 32 - WAVE_BITS )
|
---|
3032 | +#define WAVE_MASK ( ( 1 << WAVE_SH ) - 1 )
|
---|
3033 | +
|
---|
3034 | +//Maximum amount of attenuation bits
|
---|
3035 | +//Envelope goes to 511, 9 bits
|
---|
3036 | +#if (DBOPL_WAVE == WAVE_TABLEMUL )
|
---|
3037 | +//Uses the value directly
|
---|
3038 | +#define ENV_BITS ( 9 )
|
---|
3039 | +#else
|
---|
3040 | +//Add 3 bits here for more accuracy and would have to be shifted up either way
|
---|
3041 | +#define ENV_BITS ( 9 )
|
---|
3042 | +#endif
|
---|
3043 | +//Limits of the envelope with those bits and when the envelope goes silent
|
---|
3044 | +#define ENV_MIN 0
|
---|
3045 | +#define ENV_EXTRA ( ENV_BITS - 9 )
|
---|
3046 | +#define ENV_MAX ( 511 << ENV_EXTRA )
|
---|
3047 | +#define ENV_LIMIT ( ( 12 * 256) >> ( 3 - ENV_EXTRA ) )
|
---|
3048 | +#define ENV_SILENT( _X_ ) ( (_X_) >= ENV_LIMIT )
|
---|
3049 | +
|
---|
3050 | +//Attack/decay/release rate counter shift
|
---|
3051 | +#define RATE_SH 24
|
---|
3052 | +#define RATE_MASK ( ( 1 << RATE_SH ) - 1 )
|
---|
3053 | +//Has to fit within 16bit lookuptable
|
---|
3054 | +#define MUL_SH 16
|
---|
3055 | +
|
---|
3056 | +//Check some ranges
|
---|
3057 | +#if ENV_EXTRA > 3
|
---|
3058 | +#error Too many envelope bits
|
---|
3059 | +#endif
|
---|
3060 | +
|
---|
3061 | +
|
---|
3062 | +//How much to substract from the base value for the final attenuation
|
---|
3063 | +static const Bit8u KslCreateTable[16] = {
|
---|
3064 | + //0 will always be be lower than 7 * 8
|
---|
3065 | + 64, 32, 24, 19,
|
---|
3066 | + 16, 12, 11, 10,
|
---|
3067 | + 8, 6, 5, 4,
|
---|
3068 | + 3, 2, 1, 0,
|
---|
3069 | +};
|
---|
3070 | +
|
---|
3071 | +#define M(_X_) ((Bit8u)( (_X_) * 2))
|
---|
3072 | +static const Bit8u FreqCreateTable[16] = {
|
---|
3073 | + M(0.5), M(1 ), M(2 ), M(3 ), M(4 ), M(5 ), M(6 ), M(7 ),
|
---|
3074 | + M(8 ), M(9 ), M(10), M(10), M(12), M(12), M(15), M(15)
|
---|
3075 | +};
|
---|
3076 | +#undef M
|
---|
3077 | +
|
---|
3078 | +//We're not including the highest attack rate, that gets a special value
|
---|
3079 | +static const Bit8u AttackSamplesTable[13] = {
|
---|
3080 | + 69, 55, 46, 40,
|
---|
3081 | + 35, 29, 23, 20,
|
---|
3082 | + 19, 15, 11, 10,
|
---|
3083 | + 9
|
---|
3084 | +};
|
---|
3085 | +//On a real opl these values take 8 samples to reach and are based upon larger tables
|
---|
3086 | +static const Bit8u EnvelopeIncreaseTable[13] = {
|
---|
3087 | + 4, 5, 6, 7,
|
---|
3088 | + 8, 10, 12, 14,
|
---|
3089 | + 16, 20, 24, 28,
|
---|
3090 | + 32,
|
---|
3091 | +};
|
---|
3092 | +
|
---|
3093 | +#if ( DBOPL_WAVE == WAVE_HANDLER ) || ( DBOPL_WAVE == WAVE_TABLELOG )
|
---|
3094 | +static Bit16u ExpTable[ 256 ];
|
---|
3095 | +#endif
|
---|
3096 | +
|
---|
3097 | +#if ( DBOPL_WAVE == WAVE_HANDLER )
|
---|
3098 | +//PI table used by WAVEHANDLER
|
---|
3099 | +static Bit16u SinTable[ 512 ];
|
---|
3100 | +#endif
|
---|
3101 | +
|
---|
3102 | +#if ( DBOPL_WAVE > WAVE_HANDLER )
|
---|
3103 | +//Layout of the waveform table in 512 entry intervals
|
---|
3104 | +//With overlapping waves we reduce the table to half it's size
|
---|
3105 | +
|
---|
3106 | +// | |//\\|____|WAV7|//__|/\ |____|/\/\|
|
---|
3107 | +// |\\//| | |WAV7| | \/| | |
|
---|
3108 | +// |06 |0126|17 |7 |3 |4 |4 5 |5 |
|
---|
3109 | +
|
---|
3110 | +//6 is just 0 shifted and masked
|
---|
3111 | +
|
---|
3112 | +static Bit16s WaveTable[ 8 * 512 ];
|
---|
3113 | +//Distance into WaveTable the wave starts
|
---|
3114 | +static const Bit16u WaveBaseTable[8] = {
|
---|
3115 | + 0x000, 0x200, 0x200, 0x800,
|
---|
3116 | + 0xa00, 0xc00, 0x100, 0x400,
|
---|
3117 | +
|
---|
3118 | +};
|
---|
3119 | +//Mask the counter with this
|
---|
3120 | +static const Bit16u WaveMaskTable[8] = {
|
---|
3121 | + 1023, 1023, 511, 511,
|
---|
3122 | + 1023, 1023, 512, 1023,
|
---|
3123 | +};
|
---|
3124 | +
|
---|
3125 | +//Where to start the counter on at keyon
|
---|
3126 | +static const Bit16u WaveStartTable[8] = {
|
---|
3127 | + 512, 0, 0, 0,
|
---|
3128 | + 0, 512, 512, 256,
|
---|
3129 | +};
|
---|
3130 | +#endif
|
---|
3131 | +
|
---|
3132 | +#if ( DBOPL_WAVE == WAVE_TABLEMUL )
|
---|
3133 | +static Bit16u MulTable[ 384 ];
|
---|
3134 | +#endif
|
---|
3135 | +
|
---|
3136 | +static Bit8u KslTable[ 8 * 16 ];
|
---|
3137 | +static Bit8u TremoloTable[ TREMOLO_TABLE ];
|
---|
3138 | +//Start of a channel behind the chip struct start
|
---|
3139 | +static Bit16u ChanOffsetTable[32];
|
---|
3140 | +//Start of an operator behind the chip struct start
|
---|
3141 | +static Bit16u OpOffsetTable[64];
|
---|
3142 | +
|
---|
3143 | +//The lower bits are the shift of the operator vibrato value
|
---|
3144 | +//The highest bit is right shifted to generate -1 or 0 for negation
|
---|
3145 | +//So taking the highest input value of 7 this gives 3, 7, 3, 0, -3, -7, -3, 0
|
---|
3146 | +static const Bit8s VibratoTable[ 8 ] = {
|
---|
3147 | + 1 - 0x00, 0 - 0x00, 1 - 0x00, 30 - 0x00,
|
---|
3148 | + 1 - 0x80, 0 - 0x80, 1 - 0x80, 30 - 0x80
|
---|
3149 | +};
|
---|
3150 | +
|
---|
3151 | +//Shift strength for the ksl value determined by ksl strength
|
---|
3152 | +static const Bit8u KslShiftTable[4] = {
|
---|
3153 | + 31,1,2,0
|
---|
3154 | +};
|
---|
3155 | +
|
---|
3156 | +//Generate a table index and table shift value using input value from a selected rate
|
---|
3157 | +static void EnvelopeSelect( Bit8u val, Bit8u& index, Bit8u& shift ) {
|
---|
3158 | + if ( val < 13 * 4 ) { //Rate 0 - 12
|
---|
3159 | + shift = 12 - ( val >> 2 );
|
---|
3160 | + index = val & 3;
|
---|
3161 | + } else if ( val < 15 * 4 ) { //rate 13 - 14
|
---|
3162 | + shift = 0;
|
---|
3163 | + index = val - 12 * 4;
|
---|
3164 | + } else { //rate 15 and up
|
---|
3165 | + shift = 0;
|
---|
3166 | + index = 12;
|
---|
3167 | + }
|
---|
3168 | +}
|
---|
3169 | +
|
---|
3170 | +#if ( DBOPL_WAVE == WAVE_HANDLER )
|
---|
3171 | +/*
|
---|
3172 | + Generate the different waveforms out of the sine/exponetial table using handlers
|
---|
3173 | +*/
|
---|
3174 | +static inline Bits MakeVolume( Bitu wave, Bitu volume ) {
|
---|
3175 | + Bitu total = wave + volume;
|
---|
3176 | + Bitu index = total & 0xff;
|
---|
3177 | + Bitu sig = ExpTable[ index ];
|
---|
3178 | + Bitu exp = total >> 8;
|
---|
3179 | +#if 0
|
---|
3180 | + //Check if we overflow the 31 shift limit
|
---|
3181 | + if ( exp >= 32 ) {
|
---|
3182 | + LOG_MSG( "WTF %d %d", total, exp );
|
---|
3183 | + }
|
---|
3184 | +#endif
|
---|
3185 | + return (sig >> exp);
|
---|
3186 | +};
|
---|
3187 | +
|
---|
3188 | +static Bits DB_FASTCALL WaveForm0( Bitu i, Bitu volume ) {
|
---|
3189 | + Bits neg = 0 - (( i >> 9) & 1);//Create ~0 or 0
|
---|
3190 | + Bitu wave = SinTable[i & 511];
|
---|
3191 | + return (MakeVolume( wave, volume ) ^ neg) - neg;
|
---|
3192 | +}
|
---|
3193 | +static Bits DB_FASTCALL WaveForm1( Bitu i, Bitu volume ) {
|
---|
3194 | + Bit32u wave = SinTable[i & 511];
|
---|
3195 | + wave |= ( ( (i ^ 512 ) & 512) - 1) >> ( 32 - 12 );
|
---|
3196 | + return MakeVolume( wave, volume );
|
---|
3197 | +}
|
---|
3198 | +static Bits DB_FASTCALL WaveForm2( Bitu i, Bitu volume ) {
|
---|
3199 | + Bitu wave = SinTable[i & 511];
|
---|
3200 | + return MakeVolume( wave, volume );
|
---|
3201 | +}
|
---|
3202 | +static Bits DB_FASTCALL WaveForm3( Bitu i, Bitu volume ) {
|
---|
3203 | + Bitu wave = SinTable[i & 255];
|
---|
3204 | + wave |= ( ( (i ^ 256 ) & 256) - 1) >> ( 32 - 12 );
|
---|
3205 | + return MakeVolume( wave, volume );
|
---|
3206 | +}
|
---|
3207 | +static Bits DB_FASTCALL WaveForm4( Bitu i, Bitu volume ) {
|
---|
3208 | + //Twice as fast
|
---|
3209 | + i <<= 1;
|
---|
3210 | + Bits neg = 0 - (( i >> 9) & 1);//Create ~0 or 0
|
---|
3211 | + Bitu wave = SinTable[i & 511];
|
---|
3212 | + wave |= ( ( (i ^ 512 ) & 512) - 1) >> ( 32 - 12 );
|
---|
3213 | + return (MakeVolume( wave, volume ) ^ neg) - neg;
|
---|
3214 | +}
|
---|
3215 | +static Bits DB_FASTCALL WaveForm5( Bitu i, Bitu volume ) {
|
---|
3216 | + //Twice as fast
|
---|
3217 | + i <<= 1;
|
---|
3218 | + Bitu wave = SinTable[i & 511];
|
---|
3219 | + wave |= ( ( (i ^ 512 ) & 512) - 1) >> ( 32 - 12 );
|
---|
3220 | + return MakeVolume( wave, volume );
|
---|
3221 | +}
|
---|
3222 | +static Bits DB_FASTCALL WaveForm6( Bitu i, Bitu volume ) {
|
---|
3223 | + Bits neg = 0 - (( i >> 9) & 1);//Create ~0 or 0
|
---|
3224 | + return (MakeVolume( 0, volume ) ^ neg) - neg;
|
---|
3225 | +}
|
---|
3226 | +static Bits DB_FASTCALL WaveForm7( Bitu i, Bitu volume ) {
|
---|
3227 | + //Negative is reversed here
|
---|
3228 | + Bits neg = (( i >> 9) & 1) - 1;
|
---|
3229 | + Bitu wave = (i << 3);
|
---|
3230 | + //When negative the volume also runs backwards
|
---|
3231 | + wave = ((wave ^ neg) - neg) & 4095;
|
---|
3232 | + return (MakeVolume( wave, volume ) ^ neg) - neg;
|
---|
3233 | +}
|
---|
3234 | +
|
---|
3235 | +static const WaveHandler WaveHandlerTable[8] = {
|
---|
3236 | + WaveForm0, WaveForm1, WaveForm2, WaveForm3,
|
---|
3237 | + WaveForm4, WaveForm5, WaveForm6, WaveForm7
|
---|
3238 | +};
|
---|
3239 | +
|
---|
3240 | +#endif
|
---|
3241 | +
|
---|
3242 | +//Structto hold the data everything well yeh works with
|
---|
3243 | +static struct {
|
---|
3244 | + Bitu samples;
|
---|
3245 | + Bits vibrato;
|
---|
3246 | + Bits tremolo;
|
---|
3247 | + inline void SetVibrato( Bit8s vib ) {
|
---|
3248 | + vibrato = vib;
|
---|
3249 | + vibrato &= ~0x80;
|
---|
3250 | + }
|
---|
3251 | + Bit32s output[MAX_SAMPLES * 2];
|
---|
3252 | + //Could intermix the vib/trem table for slightly better cache hits
|
---|
3253 | + Bit8s vibTable[MAX_SAMPLES];
|
---|
3254 | + Bit8s tremTable[MAX_SAMPLES];
|
---|
3255 | +} Work;
|
---|
3256 | +
|
---|
3257 | +/*
|
---|
3258 | + Operator
|
---|
3259 | +*/
|
---|
3260 | +
|
---|
3261 | +//We zero out when rate == 0
|
---|
3262 | +inline void Operator::UpdateAttack( const Chip* chip ) {
|
---|
3263 | + Bit8u rate = reg60 >> 4;
|
---|
3264 | + if ( rate ) {
|
---|
3265 | + Bit8u val = (rate << 2) + ksr;
|
---|
3266 | + attackAdd = chip->attackRates[ val ];
|
---|
3267 | + rateZero &= ~(1 << ATTACK);
|
---|
3268 | + } else {
|
---|
3269 | + attackAdd = 0;
|
---|
3270 | + rateZero |= (1 << ATTACK);
|
---|
3271 | + }
|
---|
3272 | +}
|
---|
3273 | +inline void Operator::UpdateDecay( const Chip* chip ) {
|
---|
3274 | + Bit8u rate = reg60 & 0xf;
|
---|
3275 | + if ( rate ) {
|
---|
3276 | + Bit8u val = (rate << 2) + ksr;
|
---|
3277 | + decayAdd = chip->linearRates[ val ];
|
---|
3278 | + rateZero &= ~(1 << DECAY);
|
---|
3279 | + } else {
|
---|
3280 | + decayAdd = 0;
|
---|
3281 | + rateZero |= (1 << DECAY);
|
---|
3282 | + }
|
---|
3283 | +}
|
---|
3284 | +inline void Operator::UpdateRelease( const Chip* chip ) {
|
---|
3285 | + Bit8u rate = reg80 & 0xf;
|
---|
3286 | + if ( rate ) {
|
---|
3287 | + Bit8u val = (rate << 2) + ksr;
|
---|
3288 | + releaseAdd = chip->linearRates[ val ];
|
---|
3289 | + rateZero &= ~(1 << RELEASE);
|
---|
3290 | + if ( !(reg20 & MASK_SUSTAIN ) ) {
|
---|
3291 | + rateZero &= ~( 1 << SUSTAIN );
|
---|
3292 | + }
|
---|
3293 | + } else {
|
---|
3294 | + rateZero |= (1 << RELEASE);
|
---|
3295 | + releaseAdd = 0;
|
---|
3296 | + if ( !(reg20 & MASK_SUSTAIN ) ) {
|
---|
3297 | + rateZero |= ( 1 << SUSTAIN );
|
---|
3298 | + }
|
---|
3299 | + }
|
---|
3300 | +}
|
---|
3301 | +
|
---|
3302 | +inline void Operator::UpdateAttenuation( ) {
|
---|
3303 | + Bit8u kslBase = (chanData >> SHIFT_KSLBASE) & 0xff;
|
---|
3304 | + Bit32u tl = reg40 & 0x3f;
|
---|
3305 | + Bit8u kslShift = KslShiftTable[ reg40 >> 6 ];
|
---|
3306 | + //Make sure the attenuation goes to the right bits
|
---|
3307 | + totalLevel = tl << ( ENV_BITS - 7 ); //Total level goes 2 bits below max
|
---|
3308 | + totalLevel += ( kslBase << ENV_EXTRA ) >> kslShift;
|
---|
3309 | +}
|
---|
3310 | +
|
---|
3311 | +void Operator::UpdateFrequency( ) {
|
---|
3312 | + Bit32u freq = chanData & (( 1 << 10 ) - 1);
|
---|
3313 | + Bit32u block = (chanData >> 10) & 0xff;
|
---|
3314 | +
|
---|
3315 | + waveAdd = (freq << block) * freqMul;
|
---|
3316 | + if ( reg20 & MASK_VIBRATO ) {
|
---|
3317 | + vibStrength = (Bit8u)(freq >> 7);
|
---|
3318 | + vibrato = ( vibStrength << block ) * freqMul;
|
---|
3319 | + } else {
|
---|
3320 | + vibStrength = 0;
|
---|
3321 | + vibrato = 0;
|
---|
3322 | + }
|
---|
3323 | +}
|
---|
3324 | +
|
---|
3325 | +void Operator::UpdateRates( const Chip* chip ) {
|
---|
3326 | + //Mame seems to reverse this where enabling ksr actually lowers
|
---|
3327 | + //the rate, but pdf manuals says otherwise?
|
---|
3328 | + Bit8u newKsr = (chanData >> SHIFT_KEYCODE) & 0xff;
|
---|
3329 | + if ( !( reg20 & MASK_KSR ) ) {
|
---|
3330 | + newKsr >>= 2;
|
---|
3331 | + }
|
---|
3332 | + if ( ksr == newKsr )
|
---|
3333 | + return;
|
---|
3334 | + ksr = newKsr;
|
---|
3335 | + UpdateAttack( chip );
|
---|
3336 | + UpdateDecay( chip );
|
---|
3337 | + UpdateRelease( chip );
|
---|
3338 | +}
|
---|
3339 | +
|
---|
3340 | +INLINE Bit32s Operator::RateForward( Bit32u add ) {
|
---|
3341 | + rateIndex += add;
|
---|
3342 | + Bit32s ret = rateIndex >> RATE_SH;
|
---|
3343 | + rateIndex = rateIndex & RATE_MASK;
|
---|
3344 | + return ret;
|
---|
3345 | +}
|
---|
3346 | +
|
---|
3347 | +template< Operator::State yes>
|
---|
3348 | +Bits Operator::TemplateVolume( ) {
|
---|
3349 | + Bit32s vol = activeLevel;
|
---|
3350 | + Bit32s change;
|
---|
3351 | + switch ( yes ) {
|
---|
3352 | + case OFF:
|
---|
3353 | + return ENV_MAX;
|
---|
3354 | + case ATTACK:
|
---|
3355 | + change = RateForward( attackAdd );
|
---|
3356 | + if ( !change )
|
---|
3357 | + return vol;
|
---|
3358 | + vol += ( (~vol) * change ) >> 3;
|
---|
3359 | + if ( vol < ENV_MIN ) {
|
---|
3360 | + activeLevel = ENV_MIN;
|
---|
3361 | + rateIndex = 0;
|
---|
3362 | + SetState( DECAY );
|
---|
3363 | + return ENV_MIN;
|
---|
3364 | + }
|
---|
3365 | + break;
|
---|
3366 | + case DECAY:
|
---|
3367 | + vol += RateForward( decayAdd );
|
---|
3368 | + if ( vol >= sustainLevel ) {
|
---|
3369 | + //Check if we didn't overshoot max attenuation, then just go off
|
---|
3370 | + if ( vol >= ENV_MAX ) {
|
---|
3371 | + activeLevel = ENV_MAX;
|
---|
3372 | + SetState( OFF );
|
---|
3373 | + return ENV_MAX;
|
---|
3374 | + }
|
---|
3375 | + //Continue as sustain
|
---|
3376 | + rateIndex = 0;
|
---|
3377 | + SetState( SUSTAIN );
|
---|
3378 | + }
|
---|
3379 | + break;
|
---|
3380 | + case SUSTAIN:
|
---|
3381 | + if ( reg20 & MASK_SUSTAIN ) {
|
---|
3382 | + return vol;
|
---|
3383 | + }
|
---|
3384 | + //In sustain phase, but not sustaining, do regular release
|
---|
3385 | + case RELEASE:
|
---|
3386 | + vol += RateForward( releaseAdd );;
|
---|
3387 | + if ( vol >= ENV_MAX ) {
|
---|
3388 | + activeLevel = ENV_MAX;
|
---|
3389 | + SetState( OFF );
|
---|
3390 | + return ENV_MAX;
|
---|
3391 | + }
|
---|
3392 | + break;
|
---|
3393 | + }
|
---|
3394 | + activeLevel = vol;
|
---|
3395 | + return vol;
|
---|
3396 | +}
|
---|
3397 | +
|
---|
3398 | +static const VolumeHandler VolumeHandlerTable[5] = {
|
---|
3399 | + &Operator::TemplateVolume< Operator::OFF >,
|
---|
3400 | + &Operator::TemplateVolume< Operator::RELEASE >,
|
---|
3401 | + &Operator::TemplateVolume< Operator::SUSTAIN >,
|
---|
3402 | + &Operator::TemplateVolume< Operator::DECAY >,
|
---|
3403 | + &Operator::TemplateVolume< Operator::ATTACK >
|
---|
3404 | +};
|
---|
3405 | +
|
---|
3406 | +INLINE Bitu Operator::ForwardVolume() {
|
---|
3407 | + return totalLevel + (this->*volHandler)()
|
---|
3408 | +#if defined ( DBOPL_TREMOLO )
|
---|
3409 | + + (Work.tremolo & tremoloMask)
|
---|
3410 | +#endif
|
---|
3411 | + ;
|
---|
3412 | +}
|
---|
3413 | +
|
---|
3414 | +
|
---|
3415 | +INLINE Bitu Operator::ForwardWave() {
|
---|
3416 | +#if defined ( DBOPL_VIBRATO )
|
---|
3417 | + if ( vibStrength >> (Bit8u)(Work.vibrato) ) {
|
---|
3418 | + Bit32s add = vibrato >> (Bit8u)(Work.vibrato);
|
---|
3419 | + //Sign extend over the shift value
|
---|
3420 | + Bit32s neg = Work.vibrato >> 16;
|
---|
3421 | + //Negate the add with -1 or 0
|
---|
3422 | + add = ( add ^ neg ) - neg;
|
---|
3423 | + waveIndex += add + waveAdd;
|
---|
3424 | + return waveIndex >> WAVE_SH;
|
---|
3425 | + }
|
---|
3426 | +#endif
|
---|
3427 | + waveIndex += waveAdd;
|
---|
3428 | + return waveIndex >> WAVE_SH;
|
---|
3429 | +}
|
---|
3430 | +
|
---|
3431 | +
|
---|
3432 | +void Operator::Write20( const Chip* chip, Bit8u val ) {
|
---|
3433 | + Bit8u change = (reg20 ^ val );
|
---|
3434 | + if ( !change )
|
---|
3435 | + return;
|
---|
3436 | + reg20 = val;
|
---|
3437 | + //Shift the tremolo bit over the entire register, saved a branch, YES!
|
---|
3438 | + tremoloMask = (Bit8s)(val) >> 7;
|
---|
3439 | + tremoloMask &= ~(( 1 << ENV_EXTRA ) -1);
|
---|
3440 | + //Update specific features based on changes
|
---|
3441 | + if ( change & MASK_KSR ) {
|
---|
3442 | + UpdateRates( chip );
|
---|
3443 | + }
|
---|
3444 | + //With sustain enable the volume doesn't change
|
---|
3445 | + if ( reg20 & MASK_SUSTAIN || ( !releaseAdd ) ) {
|
---|
3446 | + rateZero |= ( 1 << SUSTAIN );
|
---|
3447 | + } else {
|
---|
3448 | + rateZero &= ~( 1 << SUSTAIN );
|
---|
3449 | + }
|
---|
3450 | + //Frequency multiplier or vibrato changed
|
---|
3451 | + if ( change & (0xf | MASK_VIBRATO) ) {
|
---|
3452 | + freqMul = chip->freqMul[ val & 0xf ];
|
---|
3453 | + UpdateFrequency();
|
---|
3454 | + }
|
---|
3455 | +}
|
---|
3456 | +
|
---|
3457 | +void Operator::Write40( const Chip* chip, Bit8u val ) {
|
---|
3458 | + if (!(reg40 ^ val ))
|
---|
3459 | + return;
|
---|
3460 | + reg40 = val;
|
---|
3461 | + UpdateAttenuation( );
|
---|
3462 | +}
|
---|
3463 | +
|
---|
3464 | +void Operator::Write60( const Chip* chip, Bit8u val ) {
|
---|
3465 | + Bit8u change = reg60 ^ val;
|
---|
3466 | + reg60 = val;
|
---|
3467 | + if ( change & 0x0f ) {
|
---|
3468 | + UpdateDecay( chip );
|
---|
3469 | + }
|
---|
3470 | + if ( change & 0xf0 ) {
|
---|
3471 | + UpdateAttack( chip );
|
---|
3472 | + }
|
---|
3473 | +}
|
---|
3474 | +
|
---|
3475 | +void Operator::Write80( const Chip* chip, Bit8u val ) {
|
---|
3476 | + Bit8u change = (reg80 ^ val );
|
---|
3477 | + if ( !change )
|
---|
3478 | + return;
|
---|
3479 | + reg80 = val;
|
---|
3480 | + Bit8u sustain = val >> 4;
|
---|
3481 | + //Turn 0xf into 0x1f
|
---|
3482 | + sustain |= ( sustain + 1) & 0x10;
|
---|
3483 | + sustainLevel = sustain << ( ENV_BITS - 5 );
|
---|
3484 | + if ( change & 0x0f ) {
|
---|
3485 | + UpdateRelease( chip );
|
---|
3486 | + }
|
---|
3487 | +}
|
---|
3488 | +
|
---|
3489 | +void Operator::WriteE0( const Chip* chip, Bit8u val ) {
|
---|
3490 | + if ( !(regE0 ^ val) )
|
---|
3491 | + return;
|
---|
3492 | + //in opl3 mode you can always selet 7 waveforms regardless of waveformselect
|
---|
3493 | + Bit8u waveForm = val & ( ( 0x3 & chip->waveFormMask ) | (0x7 & chip->opl3Active ) );
|
---|
3494 | + regE0 = val;
|
---|
3495 | +#if ( DBOPL_WAVE == WAVE_HANDLER )
|
---|
3496 | + waveHandler = WaveHandlerTable[ waveForm ];
|
---|
3497 | +#else
|
---|
3498 | + waveBase = WaveTable + WaveBaseTable[ waveForm ];
|
---|
3499 | + waveStart = WaveStartTable[ waveForm ] << WAVE_SH;
|
---|
3500 | + waveMask = WaveMaskTable[ waveForm ];
|
---|
3501 | +#endif
|
---|
3502 | +}
|
---|
3503 | +
|
---|
3504 | +INLINE void Operator::SetState( Bit8u s ) {
|
---|
3505 | + state = s;
|
---|
3506 | + volHandler = VolumeHandlerTable[ s ];
|
---|
3507 | +}
|
---|
3508 | +
|
---|
3509 | +INLINE bool Operator::Silent() const {
|
---|
3510 | + if ( !ENV_SILENT( totalLevel + activeLevel ) )
|
---|
3511 | + return false;
|
---|
3512 | + if ( !(rateZero & ( 1 << state ) ) )
|
---|
3513 | + return false;
|
---|
3514 | + return true;
|
---|
3515 | +}
|
---|
3516 | +
|
---|
3517 | +void Operator::KeyOn( Bit8u mask ) {
|
---|
3518 | + if ( !keyOn ) {
|
---|
3519 | + //Restart the frequency generator
|
---|
3520 | +#if ( DBOPL_WAVE > WAVE_HANDLER )
|
---|
3521 | + waveIndex = waveStart;
|
---|
3522 | +#else
|
---|
3523 | + waveIndex = 0;
|
---|
3524 | +#endif
|
---|
3525 | + rateIndex = 0;
|
---|
3526 | + SetState( ATTACK );
|
---|
3527 | + }
|
---|
3528 | + keyOn |= mask;
|
---|
3529 | +}
|
---|
3530 | +
|
---|
3531 | +void Operator::KeyOff( Bit8u mask ) {
|
---|
3532 | + keyOn &= ~mask;
|
---|
3533 | + if ( !keyOn ) {
|
---|
3534 | + if ( state != OFF ) {
|
---|
3535 | + SetState( RELEASE );
|
---|
3536 | + }
|
---|
3537 | + }
|
---|
3538 | +}
|
---|
3539 | +
|
---|
3540 | +INLINE Bits Operator::GetWave( Bitu index, Bitu vol ) {
|
---|
3541 | +#if ( DBOPL_WAVE == WAVE_HANDLER )
|
---|
3542 | + return waveHandler( index, vol << ( 3 - ENV_EXTRA ) );
|
---|
3543 | +#elif ( DBOPL_WAVE == WAVE_TABLEMUL )
|
---|
3544 | + return (waveBase[ index & waveMask ] * MulTable[ vol >> ENV_EXTRA ]) >> MUL_SH;
|
---|
3545 | +#elif ( DBOPL_WAVE == WAVE_TABLELOG )
|
---|
3546 | + Bit32s wave = waveBase[ index & waveMask ];
|
---|
3547 | + Bit32u total = ( wave & 0x7fff ) + vol << ( 3 - ENV_EXTRA );
|
---|
3548 | + Bit32s sig = ExpTable[ total & 0xff ];
|
---|
3549 | + Bit32u exp = total >> 8;
|
---|
3550 | + Bit32s neg = wave >> 16;
|
---|
3551 | + return ((sig ^ neg) - neg) >> exp;
|
---|
3552 | +#else
|
---|
3553 | +#error "No valid wave routine"
|
---|
3554 | +#endif
|
---|
3555 | +}
|
---|
3556 | +
|
---|
3557 | +Bits INLINE Operator::GetSample( Bits modulation ) {
|
---|
3558 | + Bitu vol = ForwardVolume();
|
---|
3559 | + if ( ENV_SILENT( vol ) ) {
|
---|
3560 | + //Simply forward the wave
|
---|
3561 | + waveIndex += waveAdd;
|
---|
3562 | + return 0;
|
---|
3563 | + } else {
|
---|
3564 | + Bitu index = ForwardWave();
|
---|
3565 | + index += modulation;
|
---|
3566 | + return GetWave( index, vol );
|
---|
3567 | + }
|
---|
3568 | +}
|
---|
3569 | +
|
---|
3570 | +Operator::Operator() {
|
---|
3571 | + chanData = 0;
|
---|
3572 | + freqMul = 0;
|
---|
3573 | + waveIndex = 0;
|
---|
3574 | + waveAdd = 0;
|
---|
3575 | + keyOn = 0;
|
---|
3576 | + ksr = 0;
|
---|
3577 | + reg20 = 0;
|
---|
3578 | + reg40 = 0;
|
---|
3579 | + reg60 = 0;
|
---|
3580 | + reg80 = 0;
|
---|
3581 | + regE0 = 0;
|
---|
3582 | + SetState( OFF );
|
---|
3583 | + rateZero = (1 << OFF);
|
---|
3584 | + sustainLevel = ENV_MAX;
|
---|
3585 | + activeLevel = ENV_MAX;
|
---|
3586 | + totalLevel = ENV_MAX;
|
---|
3587 | +}
|
---|
3588 | +
|
---|
3589 | +/*
|
---|
3590 | + Channel
|
---|
3591 | +*/
|
---|
3592 | +
|
---|
3593 | +Channel::Channel() {
|
---|
3594 | + old[0] = old[1] = 0;
|
---|
3595 | + chanData = 0;
|
---|
3596 | + regB0 = 0;
|
---|
3597 | + regC0 = 0;
|
---|
3598 | + maskLeft = -1;
|
---|
3599 | + maskRight = -1;
|
---|
3600 | + feedback = 31;
|
---|
3601 | + fourMask = 0;
|
---|
3602 | + synthHandler = &Channel::BlockTemplate< sm2FM >;
|
---|
3603 | +}
|
---|
3604 | +
|
---|
3605 | +void Channel::SetChanData( const Chip* chip, Bit32u data ) {
|
---|
3606 | + Bit32u change = chanData ^ data;
|
---|
3607 | + chanData = data;
|
---|
3608 | + Op( 0 )->chanData = data;
|
---|
3609 | + Op( 1 )->chanData = data;
|
---|
3610 | + //Since a frequency update triggered this, always update frequency
|
---|
3611 | + Op( 0 )->UpdateFrequency();
|
---|
3612 | + Op( 1 )->UpdateFrequency();
|
---|
3613 | + if ( change & ( 0xff << SHIFT_KSLBASE ) ) {
|
---|
3614 | + Op( 0 )->UpdateAttenuation();
|
---|
3615 | + Op( 1 )->UpdateAttenuation();
|
---|
3616 | + }
|
---|
3617 | + if ( change & ( 0xff << SHIFT_KEYCODE ) ) {
|
---|
3618 | + Op( 0 )->UpdateRates( chip );
|
---|
3619 | + Op( 1 )->UpdateRates( chip );
|
---|
3620 | + }
|
---|
3621 | +}
|
---|
3622 | +
|
---|
3623 | +void Channel::UpdateFrequency( const Chip* chip, Bit8u fourOp ) {
|
---|
3624 | + //Extrace the frequency bits
|
---|
3625 | + Bit32u data = chanData & 0xffff;
|
---|
3626 | + Bit32u kslBase = KslTable[ data >> 6 ];
|
---|
3627 | + Bit32u keyCode = ( data & 0x1c00) >> 9;
|
---|
3628 | + if ( chip->reg08 & 0x40 ) {
|
---|
3629 | + keyCode |= ( data & 0x100)>>8; /* notesel == 1 */
|
---|
3630 | + } else {
|
---|
3631 | + keyCode |= ( data & 0x200)>>9; /* notesel == 0 */
|
---|
3632 | + }
|
---|
3633 | + //Add the keycode and ksl into the highest bits of chanData
|
---|
3634 | + data |= (keyCode << SHIFT_KEYCODE) | ( kslBase << SHIFT_KSLBASE );
|
---|
3635 | + ( this + 0 )->SetChanData( chip, data );
|
---|
3636 | + if ( fourOp & 0x3f ) {
|
---|
3637 | + ( this + 1 )->SetChanData( chip, data );
|
---|
3638 | + }
|
---|
3639 | +}
|
---|
3640 | +
|
---|
3641 | +void Channel::WriteA0( const Chip* chip, Bit8u val ) {
|
---|
3642 | + Bit8u fourOp = chip->reg104 & chip->opl3Active & fourMask;
|
---|
3643 | + //Don't handle writes to silent fourop channels
|
---|
3644 | + if ( fourOp > 0x80 )
|
---|
3645 | + return;
|
---|
3646 | + Bit32u change = (chanData ^ val ) & 0xff;
|
---|
3647 | + if ( change ) {
|
---|
3648 | + chanData ^= change;
|
---|
3649 | + UpdateFrequency( chip, fourOp );
|
---|
3650 | + }
|
---|
3651 | +}
|
---|
3652 | +
|
---|
3653 | +void Channel::WriteB0( const Chip* chip, Bit8u val ) {
|
---|
3654 | + Bit8u fourOp = chip->reg104 & chip->opl3Active & fourMask;
|
---|
3655 | + //Don't handle writes to silent fourop channels
|
---|
3656 | + if ( fourOp > 0x80 )
|
---|
3657 | + return;
|
---|
3658 | + Bitu change = (chanData ^ ( val << 8 ) ) & 0x1f00;
|
---|
3659 | + if ( change ) {
|
---|
3660 | + chanData ^= change;
|
---|
3661 | + UpdateFrequency( chip, fourOp );
|
---|
3662 | + }
|
---|
3663 | + //Check for a change in the keyon/off state
|
---|
3664 | + if ( !(( val ^ regB0) & 0x20))
|
---|
3665 | + return;
|
---|
3666 | + regB0 = val;
|
---|
3667 | + if ( val & 0x20 ) {
|
---|
3668 | + Op(0)->KeyOn( 0x1 );
|
---|
3669 | + Op(1)->KeyOn( 0x1 );
|
---|
3670 | + if ( fourOp & 0x3f ) {
|
---|
3671 | + ( this + 1 )->Op(0)->KeyOn( 1 );
|
---|
3672 | + ( this + 1 )->Op(1)->KeyOn( 1 );
|
---|
3673 | + }
|
---|
3674 | + } else {
|
---|
3675 | + Op(0)->KeyOff( 0x1 );
|
---|
3676 | + Op(1)->KeyOff( 0x1 );
|
---|
3677 | + if ( fourOp & 0x3f ) {
|
---|
3678 | + ( this + 1 )->Op(0)->KeyOff( 1 );
|
---|
3679 | + ( this + 1 )->Op(1)->KeyOff( 1 );
|
---|
3680 | + }
|
---|
3681 | + }
|
---|
3682 | +}
|
---|
3683 | +
|
---|
3684 | +void Channel::WriteC0( const Chip* chip, Bit8u val ) {
|
---|
3685 | + Bit8u change = val ^ regC0;
|
---|
3686 | + if ( !change )
|
---|
3687 | + return;
|
---|
3688 | + regC0 = val;
|
---|
3689 | + feedback = ( val >> 1 ) & 7;
|
---|
3690 | + if ( feedback ) {
|
---|
3691 | + //We shift the input to the right 10 bit wave index value
|
---|
3692 | + feedback = 9 - feedback;
|
---|
3693 | + } else {
|
---|
3694 | + feedback = 31;
|
---|
3695 | + }
|
---|
3696 | + //Select the new synth mode
|
---|
3697 | + if ( chip->opl3Active ) {
|
---|
3698 | + //4-op mode enabled for this channel
|
---|
3699 | + if ( (chip->reg104 & fourMask) & 0x3f ) {
|
---|
3700 | + Channel* chan0, *chan1;
|
---|
3701 | + //Check if it's the 2nd channel in a 4-op
|
---|
3702 | + if ( !(fourMask & 0x80 ) ) {
|
---|
3703 | + chan0 = this;
|
---|
3704 | + chan1 = this + 1;
|
---|
3705 | + } else {
|
---|
3706 | + chan0 = this - 1;
|
---|
3707 | + chan1 = this;
|
---|
3708 | + }
|
---|
3709 | +
|
---|
3710 | + Bit8u synth = ( (chan0->regC0 & 1) << 0 )| (( chan1->regC0 & 1) << 1 );
|
---|
3711 | + switch ( synth ) {
|
---|
3712 | + case 0:
|
---|
3713 | + chan0->synthHandler = &Channel::BlockTemplate< sm3FMFM >;
|
---|
3714 | + break;
|
---|
3715 | + case 1:
|
---|
3716 | + chan0->synthHandler = &Channel::BlockTemplate< sm3AMFM >;
|
---|
3717 | + break;
|
---|
3718 | + case 2:
|
---|
3719 | + chan0->synthHandler = &Channel::BlockTemplate< sm3FMAM >;
|
---|
3720 | + break;
|
---|
3721 | + case 3:
|
---|
3722 | + chan0->synthHandler = &Channel::BlockTemplate< sm3AMAM >;
|
---|
3723 | + break;
|
---|
3724 | + }
|
---|
3725 | + //Disable updating percussion channels
|
---|
3726 | + } else if ((fourMask & 0x40) && ( chip->regBD & 0x20) ) {
|
---|
3727 | +
|
---|
3728 | + //Regular dual op, am or fm
|
---|
3729 | + } else if ( val & 1 ) {
|
---|
3730 | + synthHandler = &Channel::BlockTemplate< sm3AM >;
|
---|
3731 | + } else {
|
---|
3732 | + synthHandler = &Channel::BlockTemplate< sm3FM >;
|
---|
3733 | + }
|
---|
3734 | + maskLeft = ( val & 0x10 ) ? -1 : 0;
|
---|
3735 | + maskRight = ( val & 0x20 ) ? -1 : 0;
|
---|
3736 | + //opl2 active
|
---|
3737 | + } else {
|
---|
3738 | + //Disable updating percussion channels
|
---|
3739 | + if ( (fourMask & 0x40) && ( chip->regBD & 0x20 ) ) {
|
---|
3740 | +
|
---|
3741 | + //Regular dual op, am or fm
|
---|
3742 | + } else if ( val & 1 ) {
|
---|
3743 | + synthHandler = &Channel::BlockTemplate< sm2AM >;
|
---|
3744 | + } else {
|
---|
3745 | + synthHandler = &Channel::BlockTemplate< sm2FM >;
|
---|
3746 | + }
|
---|
3747 | + }
|
---|
3748 | +}
|
---|
3749 | +
|
---|
3750 | +void Channel::ResetC0( const Chip* chip ) {
|
---|
3751 | + Bit8u val = regC0;
|
---|
3752 | + regC0 ^= 0xff;
|
---|
3753 | + WriteC0( chip, val );
|
---|
3754 | +}
|
---|
3755 | +
|
---|
3756 | +template< bool opl3Mode>
|
---|
3757 | +void Channel::GeneratePercussion( Bit32s* output ) {
|
---|
3758 | + Channel* chan = this;
|
---|
3759 | +
|
---|
3760 | + //BassDrum
|
---|
3761 | + Bit32s mod = (Bit32u)((old[0] + old[1])) >> feedback;
|
---|
3762 | + old[0] = old[1];
|
---|
3763 | + old[1] = Op(0)->GetSample( mod );
|
---|
3764 | +
|
---|
3765 | + //When bassdrum is in AM mode first operator is ignoed
|
---|
3766 | + if ( chan->regC0 & 1 ) {
|
---|
3767 | + mod = 0;
|
---|
3768 | + } else {
|
---|
3769 | + mod = old[0];
|
---|
3770 | + }
|
---|
3771 | + Bit32s sample = Op(1)->GetSample( mod );
|
---|
3772 | +
|
---|
3773 | + Operator* op2 = ( this + 1 )->Op(0);
|
---|
3774 | + Operator* op4 = ( this + 2 )->Op(0);
|
---|
3775 | +
|
---|
3776 | + //Precalculate stuff used by other oupts
|
---|
3777 | + Bit32u noiseBit = rand() & 0x2;
|
---|
3778 | + Bit32u c2 = op2->ForwardWave();
|
---|
3779 | + //(bit 7 ^ bit 2) | bit 3 -> combined in bit 1
|
---|
3780 | + Bit32u phaseBit = ( (c2 >> 6) ^ ( c2 >> 1 ) ) | ( c2 >> 2 );
|
---|
3781 | + Bit32u c4 = op4->ForwardWave();
|
---|
3782 | + //bit 5 ^ bit 3 to bit 1
|
---|
3783 | + Bit32u gateBit = ( c4 >> 4 ) ^ ( c4 >> 3 );
|
---|
3784 | + phaseBit = (phaseBit | gateBit) & 0x2;
|
---|
3785 | +
|
---|
3786 | + //Hi-Hat
|
---|
3787 | + Bit32u hhVol = op2->ForwardVolume();
|
---|
3788 | + if ( !ENV_SILENT( hhVol ) ) {
|
---|
3789 | + /* when phase & 0x200 is set and noise=1 then phase = 0x200|0xd0 */
|
---|
3790 | + /* when phase & 0x200 is set and noise=0 then phase = 0x200|(0xd0>>2), ie no change */
|
---|
3791 | + Bit32u hhIndex = ( phaseBit << 8 ) | ( 0xd0 >> ( phaseBit ^ noiseBit ) );
|
---|
3792 | + sample += op2->GetWave( hhIndex, hhVol );
|
---|
3793 | + }
|
---|
3794 | + //Snare Drum
|
---|
3795 | + Operator* op3 = ( this + 1 )->Op(1);
|
---|
3796 | + Bit32u sdVol = op3->ForwardVolume();
|
---|
3797 | + if ( !ENV_SILENT( sdVol ) ) {
|
---|
3798 | + Bit32u sdBits = 0x100 + (c2 & 0x100);
|
---|
3799 | + Bit32u sdIndex = sdBits ^ ( noiseBit << 7 );
|
---|
3800 | + sample += op3->GetWave( sdIndex, sdVol );
|
---|
3801 | + }
|
---|
3802 | + //Tom-tom
|
---|
3803 | + sample += op4->GetSample( 0 );
|
---|
3804 | + //Top-Cymbal
|
---|
3805 | + Operator* op5 = ( this + 2 )->Op(1);
|
---|
3806 | + Bit32u tcVol = op5->ForwardVolume();
|
---|
3807 | + if ( !ENV_SILENT( tcVol ) ) {
|
---|
3808 | + Bit32u tcIndex = (1 + phaseBit) << 8;
|
---|
3809 | + sample += op5->GetWave( tcIndex, tcVol );
|
---|
3810 | + }
|
---|
3811 | + sample <<= 1;
|
---|
3812 | + if ( opl3Mode ) {
|
---|
3813 | + output[0] += sample;
|
---|
3814 | + output[1] += sample;
|
---|
3815 | + } else {
|
---|
3816 | + output[0] += sample;
|
---|
3817 | + }
|
---|
3818 | +}
|
---|
3819 | +
|
---|
3820 | +template<SynthMode mode>
|
---|
3821 | +Channel* Channel::BlockTemplate( ) {
|
---|
3822 | + switch( mode ) {
|
---|
3823 | + case sm2AM:
|
---|
3824 | + case sm3AM:
|
---|
3825 | + if ( Op(0)->Silent() && Op(1)->Silent() ) {
|
---|
3826 | + old[0] = old[1] = 0;
|
---|
3827 | + return (this + 1);
|
---|
3828 | + }
|
---|
3829 | + break;
|
---|
3830 | + case sm2FM:
|
---|
3831 | + case sm3FM:
|
---|
3832 | + if ( Op(1)->Silent() ) {
|
---|
3833 | + old[0] = old[1] = 0;
|
---|
3834 | + return (this + 1);
|
---|
3835 | + }
|
---|
3836 | + break;
|
---|
3837 | + case sm3FMFM:
|
---|
3838 | + if ( Op(3)->Silent() ) {
|
---|
3839 | + old[0] = old[1] = 0;
|
---|
3840 | + return (this + 2);
|
---|
3841 | + }
|
---|
3842 | + break;
|
---|
3843 | + case sm3AMFM:
|
---|
3844 | + if ( Op(0)->Silent() && Op(3)->Silent() ) {
|
---|
3845 | + old[0] = old[1] = 0;
|
---|
3846 | + return (this + 2);
|
---|
3847 | + }
|
---|
3848 | + break;
|
---|
3849 | + case sm3FMAM:
|
---|
3850 | + if ( Op(1)->Silent() && Op(3)->Silent() ) {
|
---|
3851 | + old[0] = old[1] = 0;
|
---|
3852 | + return (this + 2);
|
---|
3853 | + }
|
---|
3854 | + break;
|
---|
3855 | + case sm3AMAM:
|
---|
3856 | + if ( Op(0)->Silent() && Op(2)->Silent() && Op(3)->Silent() ) {
|
---|
3857 | + old[0] = old[1] = 0;
|
---|
3858 | + return (this + 2);
|
---|
3859 | + }
|
---|
3860 | + break;
|
---|
3861 | + // TODO: Check this
|
---|
3862 | + default:
|
---|
3863 | + break;
|
---|
3864 | + }
|
---|
3865 | + for ( Bitu i = 0; i < Work.samples; i++ ) {
|
---|
3866 | + Work.vibrato = Work.vibTable[i];
|
---|
3867 | + Work.tremolo = Work.tremTable[i];
|
---|
3868 | +
|
---|
3869 | + //Early out for percussion handlers
|
---|
3870 | + if ( mode == sm2Percussion ) {
|
---|
3871 | + GeneratePercussion<false>( Work.output + i );
|
---|
3872 | + continue; //Prevent some unitialized value bitching
|
---|
3873 | + } else if ( mode == sm3Percussion ) {
|
---|
3874 | + GeneratePercussion<true>( Work.output + i * 2 );
|
---|
3875 | + continue; //Prevent some unitialized value bitching
|
---|
3876 | + }
|
---|
3877 | +
|
---|
3878 | + //Do unsigned shift so we can shift out all bits but still stay in 10 bit range otherwise
|
---|
3879 | + Bit32s mod = (Bit32u)((old[0] + old[1])) >> feedback;
|
---|
3880 | + old[0] = old[1];
|
---|
3881 | + old[1] = Op(0)->GetSample( mod );
|
---|
3882 | + Bit32s sample;
|
---|
3883 | + Bit32s out0 = old[0];
|
---|
3884 | + if ( mode == sm2AM || mode == sm3AM ) {
|
---|
3885 | + sample = out0 + Op(1)->GetSample( 0 );
|
---|
3886 | + } else if ( mode == sm2FM || mode == sm3FM ) {
|
---|
3887 | + sample = Op(1)->GetSample( out0 );
|
---|
3888 | + } else if ( mode == sm3FMFM ) {
|
---|
3889 | + Bits next = Op(1)->GetSample( out0 );
|
---|
3890 | + next = Op(2)->GetSample( next );
|
---|
3891 | + sample = Op(3)->GetSample( next );
|
---|
3892 | + } else if ( mode == sm3AMFM ) {
|
---|
3893 | + sample = out0;
|
---|
3894 | + Bits next = Op(1)->GetSample( 0 );
|
---|
3895 | + next = Op(2)->GetSample( next );
|
---|
3896 | + sample += Op(3)->GetSample( next );
|
---|
3897 | + } else if ( mode == sm3FMAM ) {
|
---|
3898 | + sample = Op(1)->GetSample( out0 );
|
---|
3899 | + Bits next = Op(2)->GetSample( 0 );
|
---|
3900 | + sample += Op(3)->GetSample( next );
|
---|
3901 | + } else if ( mode == sm3AMAM ) {
|
---|
3902 | + sample = out0;
|
---|
3903 | + Bits next = Op(1)->GetSample( 0 );
|
---|
3904 | + sample += Op(2)->GetSample( next );
|
---|
3905 | + sample += Op(3)->GetSample( 0 );
|
---|
3906 | + }
|
---|
3907 | + switch( mode ) {
|
---|
3908 | + case sm2AM:
|
---|
3909 | + case sm2FM:
|
---|
3910 | + Work.output[ i ] += sample;
|
---|
3911 | + break;
|
---|
3912 | + case sm3AM:
|
---|
3913 | + case sm3FM:
|
---|
3914 | + case sm3FMFM:
|
---|
3915 | + case sm3AMFM:
|
---|
3916 | + case sm3FMAM:
|
---|
3917 | + case sm3AMAM:
|
---|
3918 | + Work.output[ i * 2 + 0 ] += sample & maskLeft;
|
---|
3919 | + Work.output[ i * 2 + 1 ] += sample & maskRight;
|
---|
3920 | + break;
|
---|
3921 | + // TODO: Check this
|
---|
3922 | + default:
|
---|
3923 | + break;
|
---|
3924 | + }
|
---|
3925 | + }
|
---|
3926 | + switch( mode ) {
|
---|
3927 | + case sm2AM:
|
---|
3928 | + case sm2FM:
|
---|
3929 | + case sm3AM:
|
---|
3930 | + case sm3FM:
|
---|
3931 | + return ( this + 1 );
|
---|
3932 | + case sm3FMFM:
|
---|
3933 | + case sm3AMFM:
|
---|
3934 | + case sm3FMAM:
|
---|
3935 | + case sm3AMAM:
|
---|
3936 | + return( this + 2 );
|
---|
3937 | + case sm2Percussion:
|
---|
3938 | + case sm3Percussion:
|
---|
3939 | + return( this + 3 );
|
---|
3940 | + }
|
---|
3941 | + return 0;
|
---|
3942 | +}
|
---|
3943 | +
|
---|
3944 | +/*
|
---|
3945 | + Chip
|
---|
3946 | +*/
|
---|
3947 | +
|
---|
3948 | +Chip::Chip() {
|
---|
3949 | + reg08 = 0;
|
---|
3950 | + reg04 = 0;
|
---|
3951 | + regBD = 0;
|
---|
3952 | + reg104 = 0;
|
---|
3953 | + opl3Active = 0;
|
---|
3954 | +}
|
---|
3955 | +
|
---|
3956 | +
|
---|
3957 | +Bit8u Chip::ForwardTremolo( ) {
|
---|
3958 | + tremoloCounter += tremoloAdd;
|
---|
3959 | + if ( tremoloCounter >= (uint)(TREMOLO_TABLE << TREMOLO_SH) ) {
|
---|
3960 | + tremoloCounter -= TREMOLO_TABLE << TREMOLO_SH;
|
---|
3961 | + }
|
---|
3962 | + Bitu index = tremoloCounter >> TREMOLO_SH;
|
---|
3963 | + return TremoloTable[ index ] >> tremoloShift;
|
---|
3964 | +}
|
---|
3965 | +
|
---|
3966 | +Bit8s Chip::ForwardVibrato( ) {
|
---|
3967 | + vibratoCounter += vibratoAdd;
|
---|
3968 | + Bitu index = vibratoCounter >> VIBRATO_SH;
|
---|
3969 | + //Vibrato shift, basically makes the shift greater reducing the actual final value
|
---|
3970 | + return VibratoTable[index & 7] + vibratoShift;
|
---|
3971 | +}
|
---|
3972 | +
|
---|
3973 | +void Chip::WriteBD( Bit8u val ) {
|
---|
3974 | + Bit8u change = regBD ^ val;
|
---|
3975 | + if ( !change )
|
---|
3976 | + return;
|
---|
3977 | + regBD = val;
|
---|
3978 | + //TODO could do this with shift and xor?
|
---|
3979 | + vibratoShift = (val & 0x40) ? 0x00 : 0x01;
|
---|
3980 | + tremoloShift = (val & 0x80) ? 0x00 : 0x02;
|
---|
3981 | + if ( val & 0x20 ) {
|
---|
3982 | + //Drum was just enabled, make sure channel 6 has the right synth
|
---|
3983 | + if ( change & 0x20 ) {
|
---|
3984 | + if ( opl3Active ) {
|
---|
3985 | + chan[6].synthHandler = &Channel::BlockTemplate< sm3Percussion >;
|
---|
3986 | + } else {
|
---|
3987 | + chan[6].synthHandler = &Channel::BlockTemplate< sm2Percussion >;
|
---|
3988 | + }
|
---|
3989 | + }
|
---|
3990 | + //Bass Drum
|
---|
3991 | + if ( val & 0x10 ) {
|
---|
3992 | + chan[6].op[0].KeyOn( 0x2 );
|
---|
3993 | + chan[6].op[1].KeyOn( 0x2 );
|
---|
3994 | + } else {
|
---|
3995 | + chan[6].op[0].KeyOff( 0x2 );
|
---|
3996 | + chan[6].op[1].KeyOff( 0x2 );
|
---|
3997 | + }
|
---|
3998 | + //Hi-Hat
|
---|
3999 | + if ( val & 0x1 ) {
|
---|
4000 | + chan[7].op[0].KeyOn( 0x2 );
|
---|
4001 | + } else {
|
---|
4002 | + chan[7].op[0].KeyOff( 0x2 );
|
---|
4003 | + }
|
---|
4004 | + //Snare
|
---|
4005 | + if ( val & 0x8 ) {
|
---|
4006 | + chan[7].op[1].KeyOn( 0x2 );
|
---|
4007 | + } else {
|
---|
4008 | + chan[7].op[1].KeyOff( 0x2 );
|
---|
4009 | + }
|
---|
4010 | + //Tom-Tom
|
---|
4011 | + if ( val & 0x4 ) {
|
---|
4012 | + chan[8].op[0].KeyOn( 0x2 );
|
---|
4013 | + } else {
|
---|
4014 | + chan[8].op[0].KeyOff( 0x2 );
|
---|
4015 | + }
|
---|
4016 | + //Top Cymbal
|
---|
4017 | + if ( val & 0x2 ) {
|
---|
4018 | + chan[8].op[1].KeyOn( 0x2 );
|
---|
4019 | + } else {
|
---|
4020 | + chan[8].op[1].KeyOff( 0x2 );
|
---|
4021 | + }
|
---|
4022 | + //Toggle keyoffs when we turn off the percussion
|
---|
4023 | + } else if ( change & 0x20 ) {
|
---|
4024 | + //Trigger a reset to setup the original synth handler
|
---|
4025 | + chan[6].ResetC0( this );
|
---|
4026 | + chan[6].op[0].KeyOff( 0x2 );
|
---|
4027 | + chan[6].op[1].KeyOff( 0x2 );
|
---|
4028 | + chan[7].op[0].KeyOff( 0x2 );
|
---|
4029 | + chan[7].op[1].KeyOff( 0x2 );
|
---|
4030 | + chan[8].op[0].KeyOff( 0x2 );
|
---|
4031 | + chan[8].op[1].KeyOff( 0x2 );
|
---|
4032 | + }
|
---|
4033 | +}
|
---|
4034 | +
|
---|
4035 | +
|
---|
4036 | +#define REGOP( _FUNC_ ) \
|
---|
4037 | + index = ( ( reg >> 3) & 0x20 ) | ( reg & 0x1f ); \
|
---|
4038 | + if ( OpOffsetTable[ index ] ) { \
|
---|
4039 | + Operator* regOp = (Operator*)( ((char *)this ) + OpOffsetTable[ index ] ); \
|
---|
4040 | + regOp->_FUNC_( this, val ); \
|
---|
4041 | + }
|
---|
4042 | +
|
---|
4043 | +#define REGCHAN( _FUNC_ ) \
|
---|
4044 | + index = ( ( reg >> 4) & 0x10 ) | ( reg & 0xf ); \
|
---|
4045 | + if ( ChanOffsetTable[ index ] ) { \
|
---|
4046 | + Channel* regChan = (Channel*)( ((char *)this ) + ChanOffsetTable[ index ] ); \
|
---|
4047 | + regChan->_FUNC_( this, val ); \
|
---|
4048 | + }
|
---|
4049 | +
|
---|
4050 | +void Chip::WriteReg( Bit32u reg, Bit8u val ) {
|
---|
4051 | + Bitu index;
|
---|
4052 | + switch ( (reg & 0xf0) >> 4 ) {
|
---|
4053 | + case 0x00 >> 4:
|
---|
4054 | + if ( reg == 0x01 ) {
|
---|
4055 | + waveFormMask = ( val & 0x20 ) ? 0x7 : 0x0;
|
---|
4056 | + } else if ( reg == 0x104 ) {
|
---|
4057 | + //Only detect changes in lowest 6 bits
|
---|
4058 | + if ( !((reg104 ^ val) & 0x3f) )
|
---|
4059 | + return;
|
---|
4060 | + //Always keep the highest bit enabled, for checking > 0x80
|
---|
4061 | + reg104 = 0x80 | ( val & 0x3f );
|
---|
4062 | + } else if ( reg == 0x105 ) {
|
---|
4063 | + //MAME says the real opl3 doesn't reset anything on opl3 disable/enable till the next write in another register
|
---|
4064 | + if ( !((opl3Active ^ val) & 1 ) )
|
---|
4065 | + return;
|
---|
4066 | + opl3Active = ( val & 1 ) ? 0xff : 0;
|
---|
4067 | + //Update the 0xc0 register for all channels to signal the switch to mono/stereo handlers
|
---|
4068 | + for ( int i = 0; i < 18;i++ ) {
|
---|
4069 | + chan[i].ResetC0( this );
|
---|
4070 | + }
|
---|
4071 | + } else if ( reg == 0x08 ) {
|
---|
4072 | + reg08 = val;
|
---|
4073 | + }
|
---|
4074 | + case 0x10 >> 4:
|
---|
4075 | + break;
|
---|
4076 | + case 0x20 >> 4:
|
---|
4077 | + case 0x30 >> 4:
|
---|
4078 | + REGOP( Write20 );
|
---|
4079 | + break;
|
---|
4080 | + case 0x40 >> 4:
|
---|
4081 | + case 0x50 >> 4:
|
---|
4082 | + REGOP( Write40 );
|
---|
4083 | + break;
|
---|
4084 | + case 0x60 >> 4:
|
---|
4085 | + case 0x70 >> 4:
|
---|
4086 | + REGOP( Write60 );
|
---|
4087 | + break;
|
---|
4088 | + case 0x80 >> 4:
|
---|
4089 | + case 0x90 >> 4:
|
---|
4090 | + REGOP( Write80 );
|
---|
4091 | + break;
|
---|
4092 | + case 0xa0 >> 4:
|
---|
4093 | + REGCHAN( WriteA0 );
|
---|
4094 | + break;
|
---|
4095 | + case 0xb0 >> 4:
|
---|
4096 | + if ( reg == 0xbd ) {
|
---|
4097 | + WriteBD( val );
|
---|
4098 | + } else {
|
---|
4099 | + REGCHAN( WriteB0 );
|
---|
4100 | + }
|
---|
4101 | + break;
|
---|
4102 | + case 0xc0 >> 4:
|
---|
4103 | + REGCHAN( WriteC0 );
|
---|
4104 | + case 0xd0 >> 4:
|
---|
4105 | + break;
|
---|
4106 | + case 0xe0 >> 4:
|
---|
4107 | + case 0xf0 >> 4:
|
---|
4108 | + REGOP( WriteE0 );
|
---|
4109 | + break;
|
---|
4110 | + }
|
---|
4111 | +}
|
---|
4112 | +
|
---|
4113 | +
|
---|
4114 | +Bit32u Chip::WriteAddr( Bit32u port, Bit8u val ) {
|
---|
4115 | + switch ( port & 3 ) {
|
---|
4116 | + case 0:
|
---|
4117 | + return val;
|
---|
4118 | + case 2:
|
---|
4119 | + if ( opl3Active || (val == 0x05) )
|
---|
4120 | + return 0x100 | val;
|
---|
4121 | + else
|
---|
4122 | + return val;
|
---|
4123 | + }
|
---|
4124 | + return 0;
|
---|
4125 | +}
|
---|
4126 | +
|
---|
4127 | +void Chip::GenerateBlock2( Bitu samples ) {
|
---|
4128 | + Work.samples = samples;
|
---|
4129 | + for ( Bitu i = 0; i < Work.samples; i++ ) {
|
---|
4130 | + Work.vibTable[i] = ForwardVibrato();
|
---|
4131 | + Work.tremTable[i] = ForwardTremolo();
|
---|
4132 | + Work.output[i] = 0;
|
---|
4133 | + }
|
---|
4134 | + int count = 0;
|
---|
4135 | + for( Channel* ch = chan; ch < chan + 9; ) {
|
---|
4136 | + count++;
|
---|
4137 | + ch = (ch->*(ch->synthHandler))();
|
---|
4138 | + }
|
---|
4139 | +}
|
---|
4140 | +
|
---|
4141 | +void Chip::GenerateBlock3( Bitu samples ) {
|
---|
4142 | + Work.samples = samples;
|
---|
4143 | + for ( Bitu i = 0; i < Work.samples; i++ ) {
|
---|
4144 | + Work.vibTable[i] = ForwardVibrato();
|
---|
4145 | + Work.tremTable[i] = ForwardTremolo();
|
---|
4146 | + Work.output[i*2 + 0] = 0;
|
---|
4147 | + Work.output[i*2 + 1] = 0;
|
---|
4148 | + }
|
---|
4149 | + int count = 0;
|
---|
4150 | + for( Channel* ch = chan; ch < chan + 18; ) {
|
---|
4151 | + count++;
|
---|
4152 | + ch = (ch->*(ch->synthHandler))();
|
---|
4153 | + }
|
---|
4154 | +}
|
---|
4155 | +
|
---|
4156 | +void Chip::Setup( Bit32u rate ) {
|
---|
4157 | + //Vibrato forwards every 1024 samples
|
---|
4158 | + vibratoAdd = (Bit32u)((double)rate * (double)( 1 << (VIBRATO_SH - 10) ) / OPLRATE);
|
---|
4159 | + vibratoCounter = 0;
|
---|
4160 | + //tremolo forwards every 64 samples
|
---|
4161 | + //We use a 52 entry table, real is 210, so repeat each sample an extra 4 times
|
---|
4162 | + tremoloAdd = (Bit32u)((double)rate * (double)( 1 << (TREMOLO_SH - 6 - 2) ) / OPLRATE);
|
---|
4163 | + tremoloCounter = 0;
|
---|
4164 | + //10 bits of frequency counter
|
---|
4165 | + //With higher octave this gets shifted up
|
---|
4166 | + //-1 since the freqCreateTable = *2
|
---|
4167 | + double scale = (OPLRATE * (double)( 1 << ( WAVE_SH - 10 - 1))) / rate;
|
---|
4168 | + for ( int i = 0; i < 16; i++ ) {
|
---|
4169 | + //Use rounding with 0.5
|
---|
4170 | + freqMul[i] = (Bit32u)( 0.5 + scale * FreqCreateTable[ i ] );
|
---|
4171 | + }
|
---|
4172 | +
|
---|
4173 | + scale = OPLRATE / rate;
|
---|
4174 | + //-3 since the real envelope takes 8 steps to reach the single value we supply
|
---|
4175 | + for ( Bit8u i = 0; i < 76; i++ ) {
|
---|
4176 | + Bit8u index, shift;
|
---|
4177 | + EnvelopeSelect( i, index, shift );
|
---|
4178 | + linearRates[i] = (Bit32u)( scale * (EnvelopeIncreaseTable[ index ] << ( RATE_SH + ENV_EXTRA - shift - 3 )));
|
---|
4179 | + }
|
---|
4180 | + //Generate the best matching attack rate
|
---|
4181 | + for ( Bit8u i = 0; i < 62; i++ ) {
|
---|
4182 | + Bit8u index, shift;
|
---|
4183 | + EnvelopeSelect( i, index, shift );
|
---|
4184 | + //Original amount of samples the attack would take
|
---|
4185 | + Bit32s original = (Bit32u)( (AttackSamplesTable[ index ] << shift) / scale);
|
---|
4186 | +
|
---|
4187 | + Bit32s guessAdd = (Bit32u)( scale * (EnvelopeIncreaseTable[ index ] << ( RATE_SH - shift - 3 )));
|
---|
4188 | + Bit32s bestAdd;
|
---|
4189 | + Bit32u bestDiff = 1 << 30;
|
---|
4190 | + for( Bit32u passes = 0; passes < 16; passes ++ ) {
|
---|
4191 | + Bit32s volume = ENV_MAX;
|
---|
4192 | + Bit32s samples = 0;
|
---|
4193 | + Bit32u count = 0;
|
---|
4194 | + while ( volume > 0 && samples < original * 2 ) {
|
---|
4195 | + count += guessAdd;
|
---|
4196 | + Bit32s change = count >> RATE_SH;
|
---|
4197 | + count &= RATE_MASK;
|
---|
4198 | + if ( change ) {
|
---|
4199 | + volume += ( ~volume * change ) >> 3;
|
---|
4200 | + }
|
---|
4201 | + samples++;
|
---|
4202 | +
|
---|
4203 | + }
|
---|
4204 | + Bit32s diff = original - samples;
|
---|
4205 | + Bit32u lDiff = labs( diff );
|
---|
4206 | + //Init last on first pass
|
---|
4207 | + if ( lDiff < bestDiff ) {
|
---|
4208 | + bestDiff = lDiff;
|
---|
4209 | + bestAdd = guessAdd;
|
---|
4210 | + if ( !bestDiff )
|
---|
4211 | + break;
|
---|
4212 | + }
|
---|
4213 | + //Below our target
|
---|
4214 | + if ( diff < 0 ) {
|
---|
4215 | + //Better than the last time
|
---|
4216 | + Bit32s mul = ((original - diff) << 12) / original;
|
---|
4217 | + guessAdd = ((guessAdd * mul) >> 12);
|
---|
4218 | + guessAdd++;
|
---|
4219 | + } else if ( diff > 0 ) {
|
---|
4220 | + Bit32s mul = ((original - diff) << 12) / original;
|
---|
4221 | + guessAdd = (guessAdd * mul) >> 12;
|
---|
4222 | + guessAdd--;
|
---|
4223 | + }
|
---|
4224 | + }
|
---|
4225 | + attackRates[i] = bestAdd;
|
---|
4226 | + }
|
---|
4227 | + for ( Bit8u i = 62; i < 76; i++ ) {
|
---|
4228 | + //This should provide instant volume maximizing
|
---|
4229 | + attackRates[i] = 8 << RATE_SH;
|
---|
4230 | + }
|
---|
4231 | + //Setup the channels with the correct four op flags
|
---|
4232 | + //Channels are accessed through a table so they appear linear here
|
---|
4233 | + chan[ 0].fourMask = 0x00 | ( 1 << 0 );
|
---|
4234 | + chan[ 1].fourMask = 0x80 | ( 1 << 0 );
|
---|
4235 | + chan[ 2].fourMask = 0x00 | ( 1 << 1 );
|
---|
4236 | + chan[ 3].fourMask = 0x80 | ( 1 << 1 );
|
---|
4237 | + chan[ 4].fourMask = 0x00 | ( 1 << 2 );
|
---|
4238 | + chan[ 5].fourMask = 0x80 | ( 1 << 2 );
|
---|
4239 | +
|
---|
4240 | + chan[ 9].fourMask = 0x00 | ( 1 << 3 );
|
---|
4241 | + chan[10].fourMask = 0x80 | ( 1 << 3 );
|
---|
4242 | + chan[11].fourMask = 0x00 | ( 1 << 4 );
|
---|
4243 | + chan[12].fourMask = 0x80 | ( 1 << 4 );
|
---|
4244 | + chan[13].fourMask = 0x00 | ( 1 << 5 );
|
---|
4245 | + chan[14].fourMask = 0x80 | ( 1 << 5 );
|
---|
4246 | +
|
---|
4247 | + //mark the percussion channels
|
---|
4248 | + chan[ 6].fourMask = 0x40;
|
---|
4249 | + chan[ 7].fourMask = 0x40;
|
---|
4250 | + chan[ 8].fourMask = 0x40;
|
---|
4251 | +
|
---|
4252 | + //Clear Everything in opl3 mode
|
---|
4253 | + WriteReg( 0x105, 0x1 );
|
---|
4254 | + for ( int i = 0; i < 512; i++ ) {
|
---|
4255 | + if ( i == 0x105 )
|
---|
4256 | + continue;
|
---|
4257 | + WriteReg( i, 0xff );
|
---|
4258 | + WriteReg( i, 0x0 );
|
---|
4259 | + }
|
---|
4260 | + WriteReg( 0x105, 0x0 );
|
---|
4261 | + //Clear everything in opl2 mode
|
---|
4262 | + for ( int i = 0; i < 255; i++ ) {
|
---|
4263 | + WriteReg( i, 0xff );
|
---|
4264 | + WriteReg( i, 0x0 );
|
---|
4265 | + }
|
---|
4266 | +}
|
---|
4267 | +
|
---|
4268 | +static bool doneTables = false;
|
---|
4269 | +void InitTables( void ) {
|
---|
4270 | + if ( doneTables )
|
---|
4271 | + return;
|
---|
4272 | + doneTables = true;
|
---|
4273 | +#if ( DBOPL_WAVE == WAVE_HANDLER ) || ( DBOPL_WAVE == WAVE_TABLELOG )
|
---|
4274 | + //Exponential volume table, same as the real adlib
|
---|
4275 | + for ( int i = 0; i < 256; i++ ) {
|
---|
4276 | + //Save them in reverse
|
---|
4277 | + ExpTable[i] = (int)( 0.5 + ( pow(2.0, ( 255 - i) * ( 1.0 /256 ) )-1) * 1024 );
|
---|
4278 | + ExpTable[i] += 1024; //or remove the -1 oh well :)
|
---|
4279 | + //Preshift to the left once so the final volume can shift to the right
|
---|
4280 | + ExpTable[i] *= 2;
|
---|
4281 | + }
|
---|
4282 | +#endif
|
---|
4283 | +#if ( DBOPL_WAVE == WAVE_HANDLER )
|
---|
4284 | + //Add 0.5 for the trunc rounding of the integer cast
|
---|
4285 | + //Do a PI sinetable instead of the original 0.5 PI
|
---|
4286 | + for ( int i = 0; i < 512; i++ ) {
|
---|
4287 | + SinTable[i] = (Bit16s)( 0.5 - log10( sin( (i + 0.5) * (PI / 512.0) ) ) / log10(2.0)*256 );
|
---|
4288 | + }
|
---|
4289 | +#endif
|
---|
4290 | +#if ( DBOPL_WAVE == WAVE_TABLEMUL )
|
---|
4291 | + //Multiplication based tables
|
---|
4292 | + for ( int i = 0; i < 384; i++ ) {
|
---|
4293 | + int s = i * 8;
|
---|
4294 | + //TODO maybe keep some of the precision errors of the original table?
|
---|
4295 | + double val = ( 0.5 + ( pow(2, -1 + ( 255 - s) * ( 1.0 /256 ) )) * ( 1 << MUL_SH ));
|
---|
4296 | + MulTable[i] = (Bit16u)(val);
|
---|
4297 | + }
|
---|
4298 | +
|
---|
4299 | + //Sine Wave Base
|
---|
4300 | + for ( int i = 0; i < 512; i++ ) {
|
---|
4301 | + WaveTable[ 0x0200 + i ] = (Bit16s)(sin( (i + 0.5) * (PI / 512.0) ) * 4084);
|
---|
4302 | + WaveTable[ 0x0000 + i ] = -WaveTable[ 0x200 + i ];
|
---|
4303 | + }
|
---|
4304 | + //Exponential wave
|
---|
4305 | + for ( int i = 0; i < 256; i++ ) {
|
---|
4306 | + WaveTable[ 0x700 + i ] = (Bit16s)( 0.5 + ( pow(2, -1 + ( 255 - i * 8) * ( 1.0 /256 ) ) ) * 4085 );
|
---|
4307 | + WaveTable[ 0x6ff - i ] = -WaveTable[ 0x700 + i ];
|
---|
4308 | + }
|
---|
4309 | +#endif
|
---|
4310 | +#if ( DBOPL_WAVE == WAVE_TABLELOG )
|
---|
4311 | + //Sine Wave Base
|
---|
4312 | + for ( int i = 0; i < 512; i++ ) {
|
---|
4313 | + WaveTable[ 0x0200 + i ] = (Bit16s)( 0.5 - log10( sin( (i + 0.5) * (PI / 512.0) ) ) / log10(2.0)*256 );
|
---|
4314 | + WaveTable[ 0x0000 + i ] = ((Bit16s)0x8000) | WaveTable[ 0x200 + i];
|
---|
4315 | + }
|
---|
4316 | + //Exponential wave
|
---|
4317 | + for ( int i = 0; i < 256; i++ ) {
|
---|
4318 | + WaveTable[ 0x700 + i ] = i * 8;
|
---|
4319 | + WaveTable[ 0x6ff - i ] = ((Bit16s)0x8000) | i * 8;
|
---|
4320 | + }
|
---|
4321 | +#endif
|
---|
4322 | +
|
---|
4323 | + // | |//\\|____|WAV7|//__|/\ |____|/\/\|
|
---|
4324 | + // |\\//| | |WAV7| | \/| | |
|
---|
4325 | + // |06 |0126|27 |7 |3 |4 |4 5 |5 |
|
---|
4326 | +
|
---|
4327 | +#if (( DBOPL_WAVE == WAVE_TABLELOG ) || ( DBOPL_WAVE == WAVE_TABLEMUL ))
|
---|
4328 | + for ( int i = 0; i < 256; i++ ) {
|
---|
4329 | + //Fill silence gaps
|
---|
4330 | + WaveTable[ 0x400 + i ] = WaveTable[0];
|
---|
4331 | + WaveTable[ 0x500 + i ] = WaveTable[0];
|
---|
4332 | + WaveTable[ 0x900 + i ] = WaveTable[0];
|
---|
4333 | + WaveTable[ 0xc00 + i ] = WaveTable[0];
|
---|
4334 | + WaveTable[ 0xd00 + i ] = WaveTable[0];
|
---|
4335 | + //Replicate sines in other pieces
|
---|
4336 | + WaveTable[ 0x800 + i ] = WaveTable[ 0x200 + i ];
|
---|
4337 | + //double speed sines
|
---|
4338 | + WaveTable[ 0xa00 + i ] = WaveTable[ 0x200 + i * 2 ];
|
---|
4339 | + WaveTable[ 0xb00 + i ] = WaveTable[ 0x000 + i * 2 ];
|
---|
4340 | + WaveTable[ 0xe00 + i ] = WaveTable[ 0x200 + i * 2 ];
|
---|
4341 | + WaveTable[ 0xf00 + i ] = WaveTable[ 0x200 + i * 2 ];
|
---|
4342 | + }
|
---|
4343 | +#endif
|
---|
4344 | +
|
---|
4345 | + //Create the ksl table
|
---|
4346 | + for ( int oct = 0; oct < 8; oct++ ) {
|
---|
4347 | + int base = oct * 8;
|
---|
4348 | + for ( int i = 0; i < 16; i++ ) {
|
---|
4349 | + int val = base - KslCreateTable[i];
|
---|
4350 | + if ( val < 0 )
|
---|
4351 | + val = 0;
|
---|
4352 | + //*4 for the final range to match attenuation range
|
---|
4353 | + KslTable[ oct * 16 + i ] = val * 4;
|
---|
4354 | + }
|
---|
4355 | + }
|
---|
4356 | + //Create the Tremolo table, just increase and decrease a triangle wave
|
---|
4357 | + for ( Bit8u i = 0; i < TREMOLO_TABLE / 2; i++ ) {
|
---|
4358 | + Bit8u val = i << ENV_EXTRA;
|
---|
4359 | + TremoloTable[i] = val;
|
---|
4360 | + TremoloTable[TREMOLO_TABLE - 1 - i] = val;
|
---|
4361 | + }
|
---|
4362 | + //Create a table with offsets of the channels from the start of the chip
|
---|
4363 | + for ( Bitu i = 0; i < 32; i++ ) {
|
---|
4364 | + Bitu index = i & 0xf;
|
---|
4365 | + if ( index >= 9 ) {
|
---|
4366 | + ChanOffsetTable[i] = 0;
|
---|
4367 | + continue;
|
---|
4368 | + }
|
---|
4369 | + //Make sure the four op channels follow eachother
|
---|
4370 | + if ( index < 6 ) {
|
---|
4371 | + index = (index % 3) * 2 + ( index / 3 );
|
---|
4372 | + }
|
---|
4373 | + //Add back the bits for highest ones
|
---|
4374 | + if ( i >= 16 )
|
---|
4375 | + index += 9;
|
---|
4376 | + ChanOffsetTable[i] = OFFS(Chip, chan) + index * sizeof(Channel);
|
---|
4377 | + }
|
---|
4378 | + //Same for operators
|
---|
4379 | + for ( Bitu i = 0; i < 64; i++ ) {
|
---|
4380 | + if ( i % 8 >= 6 || ( (i / 8) % 4 == 3 ) ) {
|
---|
4381 | + OpOffsetTable[i] = 0;
|
---|
4382 | + continue;
|
---|
4383 | + }
|
---|
4384 | + Bitu chNum = (i / 8) * 3 + (i % 8) % 3;
|
---|
4385 | + //Make sure we use 16 and up for the 2nd range to match the chanoffset gap
|
---|
4386 | + if ( chNum >= 12 )
|
---|
4387 | + chNum += 16 - 12;
|
---|
4388 | + Bitu opNum = ( i % 8 ) / 3;
|
---|
4389 | + OpOffsetTable[i] = ChanOffsetTable[ chNum ] + OFFS(Channel, op) + opNum * sizeof(Operator);
|
---|
4390 | + }
|
---|
4391 | +}
|
---|
4392 | +
|
---|
4393 | +Bit32u Handler::writeAddr( Bit32u port, Bit8u val ) {
|
---|
4394 | + return chip.WriteAddr( port, val );
|
---|
4395 | +
|
---|
4396 | +}
|
---|
4397 | +void Handler::writeReg( Bit32u addr, Bit8u val ) {
|
---|
4398 | + chip.WriteReg( addr, val );
|
---|
4399 | +}
|
---|
4400 | +
|
---|
4401 | +void Handler::generate( Bit16s *chan, Bitu samples ) {
|
---|
4402 | + // Opl3 is stereo thus we half the number of samples here.
|
---|
4403 | +
|
---|
4404 | + while (samples > 0) {
|
---|
4405 | + Bitu todo = samples > MAX_SAMPLES ? MAX_SAMPLES : samples;
|
---|
4406 | + samples -= todo;
|
---|
4407 | + if ( !chip.opl3Active ) {
|
---|
4408 | + chip.GenerateBlock2( todo );
|
---|
4409 | + for (uint i = 0; i < todo; ++i)
|
---|
4410 | + chan[i] = Work.output[i];
|
---|
4411 | + chan += todo;
|
---|
4412 | + } else {
|
---|
4413 | + chip.GenerateBlock3( samples );
|
---|
4414 | + for (uint i = 0; i < (todo << 1); ++i)
|
---|
4415 | + chan[i] = Work.output[i];
|
---|
4416 | + chan += (todo << 1);
|
---|
4417 | + }
|
---|
4418 | + }
|
---|
4419 | +}
|
---|
4420 | +
|
---|
4421 | +void Handler::init( Bitu rate ) {
|
---|
4422 | + InitTables();
|
---|
4423 | + chip.Setup( rate );
|
---|
4424 | +}
|
---|
4425 | +
|
---|
4426 | +} // end of namespace DBOPL
|
---|
4427 | +} // end of namespace DOSBox
|
---|
4428 | +} // end of namespace AdLib
|
---|
4429 | +
|
---|
4430 | +#endif
|
---|
4431 | +
|
---|
4432 | Index: sound/softsynth/adlib/dosbox.h
|
---|
4433 | ===================================================================
|
---|
4434 | --- sound/softsynth/adlib/dosbox.h (revision 0)
|
---|
4435 | +++ sound/softsynth/adlib/dosbox.h (revision 0)
|
---|
4436 | @@ -0,0 +1,120 @@
|
---|
4437 | +/* ScummVM - Graphic Adventure Engine
|
---|
4438 | + *
|
---|
4439 | + * ScummVM is the legal property of its developers, whose names
|
---|
4440 | + * are too numerous to list here. Please refer to the COPYRIGHT
|
---|
4441 | + * file distributed with this source distribution.
|
---|
4442 | + *
|
---|
4443 | + * This program is free software; you can redistribute it and/or
|
---|
4444 | + * modify it under the terms of the GNU General Public License
|
---|
4445 | + * as published by the Free Software Foundation; either version 2
|
---|
4446 | + * of the License, or (at your option) any later version.
|
---|
4447 | + *
|
---|
4448 | + * This program is distributed in the hope that it will be useful,
|
---|
4449 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
4450 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
4451 | + * GNU General Public License for more details.
|
---|
4452 | + *
|
---|
4453 | + * You should have received a copy of the GNU General Public License
|
---|
4454 | + * along with this program; if not, write to the Free Software
|
---|
4455 | + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
---|
4456 | + *
|
---|
4457 | + * $URL$
|
---|
4458 | + * $Id$
|
---|
4459 | + */
|
---|
4460 | +
|
---|
4461 | +/*
|
---|
4462 | + * Based on AdLib emulation code of DOSBox
|
---|
4463 | + * Copyright (C) 2002-2009 The DOSBox Team
|
---|
4464 | + * Licensed under GPLv2+
|
---|
4465 | + * http://www.dosbox.com
|
---|
4466 | + */
|
---|
4467 | +
|
---|
4468 | +#ifndef SOUND_SOFTSYNTH_ADLIB_DOSBOX_H
|
---|
4469 | +#define SOUND_SOFTSYNTH_ADLIB_DOSBOX_H
|
---|
4470 | +
|
---|
4471 | +#ifndef DISABLE_DOSBOX_ADLIB
|
---|
4472 | +
|
---|
4473 | +#include "sound/fmopl.h"
|
---|
4474 | +
|
---|
4475 | +namespace AdLib {
|
---|
4476 | +namespace DOSBox {
|
---|
4477 | +
|
---|
4478 | +class Handler;
|
---|
4479 | +
|
---|
4480 | +struct Timer {
|
---|
4481 | + double startTime;
|
---|
4482 | + double delay;
|
---|
4483 | + bool enabled, overflow, masked;
|
---|
4484 | + uint8 counter;
|
---|
4485 | +
|
---|
4486 | + Timer();
|
---|
4487 | +
|
---|
4488 | + //Call update before making any further changes
|
---|
4489 | + void update(double time);
|
---|
4490 | +
|
---|
4491 | + //On a reset make sure the start is in sync with the next cycle
|
---|
4492 | + void reset(double time);
|
---|
4493 | +
|
---|
4494 | + void stop();
|
---|
4495 | +
|
---|
4496 | + void start(double time, int scale);
|
---|
4497 | +};
|
---|
4498 | +
|
---|
4499 | +struct Chip {
|
---|
4500 | + //Last selected register
|
---|
4501 | + Timer timer[2];
|
---|
4502 | + //Check for it being a write to the timer
|
---|
4503 | + bool write(uint32 addr, uint8 val);
|
---|
4504 | + //Read the current timer state, will use current double
|
---|
4505 | + uint8 read();
|
---|
4506 | +};
|
---|
4507 | +
|
---|
4508 | +class Handler {
|
---|
4509 | +public:
|
---|
4510 | + virtual ~Handler() {}
|
---|
4511 | +
|
---|
4512 | + // Write an address to a chip, returns the address the chip sets
|
---|
4513 | + virtual uint32 writeAddr(uint32 port, uint8 val) = 0;
|
---|
4514 | + // Write to a specific register in the chip
|
---|
4515 | + virtual void writeReg(uint32 addr, uint8 val) = 0;
|
---|
4516 | + // Generate a certain amount of samples
|
---|
4517 | + virtual void generate(int16 *chan, uint samples) = 0;
|
---|
4518 | + // Initialize at a specific sample rate and mode
|
---|
4519 | + virtual void init(uint rate) = 0;
|
---|
4520 | +};
|
---|
4521 | +
|
---|
4522 | +class AdLib_DOSBox : public AdLib {
|
---|
4523 | +private:
|
---|
4524 | + kOplType _type;
|
---|
4525 | + uint _rate;
|
---|
4526 | +
|
---|
4527 | + Handler *_handler;
|
---|
4528 | + Chip _chip[2];
|
---|
4529 | + union {
|
---|
4530 | + uint16 normal;
|
---|
4531 | + uint8 dual[2];
|
---|
4532 | + } _reg;
|
---|
4533 | +
|
---|
4534 | + void free();
|
---|
4535 | +public:
|
---|
4536 | + AdLib_DOSBox();
|
---|
4537 | + ~AdLib_DOSBox();
|
---|
4538 | +
|
---|
4539 | + void init(int rate, kOplType type);
|
---|
4540 | + void reset();
|
---|
4541 | +
|
---|
4542 | + void write(int a, int v);
|
---|
4543 | + byte read(int a);
|
---|
4544 | +
|
---|
4545 | + void writeReg(int r, int v);
|
---|
4546 | +
|
---|
4547 | + void readBuffer(int16 *buffer, int length);
|
---|
4548 | +};
|
---|
4549 | +
|
---|
4550 | +} // end of namespace DOSBox
|
---|
4551 | +} // end of namespace AdLib
|
---|
4552 | +
|
---|
4553 | +#endif // !DISABLE_DOSBOX_ADLIB
|
---|
4554 | +
|
---|
4555 | +#endif
|
---|
4556 | +
|
---|
4557 | Index: sound/softsynth/adlib/mame.h
|
---|
4558 | ===================================================================
|
---|
4559 | --- sound/softsynth/adlib/mame.h (revision 0)
|
---|
4560 | +++ sound/softsynth/adlib/mame.h (revision 0)
|
---|
4561 | @@ -0,0 +1,200 @@
|
---|
4562 | +/* ScummVM - Graphic Adventure Engine
|
---|
4563 | + *
|
---|
4564 | + * ScummVM is the legal property of its developers, whose names
|
---|
4565 | + * are too numerous to list here. Please refer to the COPYRIGHT
|
---|
4566 | + * file distributed with this source distribution.
|
---|
4567 | + *
|
---|
4568 | + * This program is free software; you can redistribute it and/or
|
---|
4569 | + * modify it under the terms of the GNU General Public License
|
---|
4570 | + * as published by the Free Software Foundation; either version 2
|
---|
4571 | + * of the License, or (at your option) any later version.
|
---|
4572 | +
|
---|
4573 | + * This program is distributed in the hope that it will be useful,
|
---|
4574 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
4575 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
4576 | + * GNU General Public License for more details.
|
---|
4577 | +
|
---|
4578 | + * You should have received a copy of the GNU General Public License
|
---|
4579 | + * along with this program; if not, write to the Free Software
|
---|
4580 | + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
---|
4581 | + *
|
---|
4582 | + * $URL: https://scummvm.svn.sourceforge.net/svnroot/scummvm/scummvm/trunk/sound/fmopl.h $
|
---|
4583 | + * $Id: fmopl.h 38211 2009-02-15 10:07:50Z sev $
|
---|
4584 | + *
|
---|
4585 | + * LGPL licensed version of MAMEs fmopl (V0.37a modified) by
|
---|
4586 | + * Tatsuyuki Satoh. Included from LGPL'ed AdPlug.
|
---|
4587 | + */
|
---|
4588 | +
|
---|
4589 | +
|
---|
4590 | +#ifndef SOUND_SOFTSYNTH_ADLIB_MAME_H
|
---|
4591 | +#define SOUND_SOFTSYNTH_ADLIB_MAME_H
|
---|
4592 | +
|
---|
4593 | +#include "common/scummsys.h"
|
---|
4594 | +#include "common/util.h"
|
---|
4595 | +
|
---|
4596 | +#include "sound/fmopl.h"
|
---|
4597 | +
|
---|
4598 | +namespace AdLib {
|
---|
4599 | +namespace MAME {
|
---|
4600 | +
|
---|
4601 | +enum {
|
---|
4602 | + FMOPL_ENV_BITS_HQ = 16,
|
---|
4603 | + FMOPL_ENV_BITS_MQ = 8,
|
---|
4604 | + FMOPL_ENV_BITS_LQ = 8,
|
---|
4605 | + FMOPL_EG_ENT_HQ = 4096,
|
---|
4606 | + FMOPL_EG_ENT_MQ = 1024,
|
---|
4607 | + FMOPL_EG_ENT_LQ = 128
|
---|
4608 | +};
|
---|
4609 | +
|
---|
4610 | +
|
---|
4611 | +typedef void (*OPL_TIMERHANDLER)(int channel,double interval_Sec);
|
---|
4612 | +typedef void (*OPL_IRQHANDLER)(int param,int irq);
|
---|
4613 | +typedef void (*OPL_UPDATEHANDLER)(int param,int min_interval_us);
|
---|
4614 | +
|
---|
4615 | +#define OPL_TYPE_WAVESEL 0x01 /* waveform select */
|
---|
4616 | +
|
---|
4617 | +/* Saving is necessary for member of the 'R' mark for suspend/resume */
|
---|
4618 | +/* ---------- OPL one of slot ---------- */
|
---|
4619 | +typedef struct fm_opl_slot {
|
---|
4620 | + int TL; /* total level :TL << 8 */
|
---|
4621 | + int TLL; /* adjusted now TL */
|
---|
4622 | + uint8 KSR; /* key scale rate :(shift down bit) */
|
---|
4623 | + int *AR; /* attack rate :&AR_TABLE[AR<<2] */
|
---|
4624 | + int *DR; /* decay rate :&DR_TABLE[DR<<2] */
|
---|
4625 | + int SL; /* sustain level :SL_TABLE[SL] */
|
---|
4626 | + int *RR; /* release rate :&DR_TABLE[RR<<2] */
|
---|
4627 | + uint8 ksl; /* keyscale level :(shift down bits) */
|
---|
4628 | + uint8 ksr; /* key scale rate :kcode>>KSR */
|
---|
4629 | + uint mul; /* multiple :ML_TABLE[ML] */
|
---|
4630 | + uint Cnt; /* frequency count */
|
---|
4631 | + uint Incr; /* frequency step */
|
---|
4632 | +
|
---|
4633 | + /* envelope generator state */
|
---|
4634 | + uint8 eg_typ;/* envelope type flag */
|
---|
4635 | + uint8 evm; /* envelope phase */
|
---|
4636 | + int evc; /* envelope counter */
|
---|
4637 | + int eve; /* envelope counter end point */
|
---|
4638 | + int evs; /* envelope counter step */
|
---|
4639 | + int evsa; /* envelope step for AR :AR[ksr] */
|
---|
4640 | + int evsd; /* envelope step for DR :DR[ksr] */
|
---|
4641 | + int evsr; /* envelope step for RR :RR[ksr] */
|
---|
4642 | +
|
---|
4643 | + /* LFO */
|
---|
4644 | + uint8 ams; /* ams flag */
|
---|
4645 | + uint8 vib; /* vibrate flag */
|
---|
4646 | + /* wave selector */
|
---|
4647 | + int **wavetable;
|
---|
4648 | +} OPL_SLOT;
|
---|
4649 | +
|
---|
4650 | +/* ---------- OPL one of channel ---------- */
|
---|
4651 | +typedef struct fm_opl_channel {
|
---|
4652 | + OPL_SLOT SLOT[2];
|
---|
4653 | + uint8 CON; /* connection type */
|
---|
4654 | + uint8 FB; /* feed back :(shift down bit)*/
|
---|
4655 | + int *connect1; /* slot1 output pointer */
|
---|
4656 | + int *connect2; /* slot2 output pointer */
|
---|
4657 | + int op1_out[2]; /* slot1 output for selfeedback */
|
---|
4658 | +
|
---|
4659 | + /* phase generator state */
|
---|
4660 | + uint block_fnum; /* block+fnum */
|
---|
4661 | + uint8 kcode; /* key code : KeyScaleCode */
|
---|
4662 | + uint fc; /* Freq. Increment base */
|
---|
4663 | + uint ksl_base; /* KeyScaleLevel Base step */
|
---|
4664 | + uint8 keyon; /* key on/off flag */
|
---|
4665 | +} OPL_CH;
|
---|
4666 | +
|
---|
4667 | +/* OPL state */
|
---|
4668 | +typedef struct fm_opl_f {
|
---|
4669 | + uint8 type; /* chip type */
|
---|
4670 | + int clock; /* master clock (Hz) */
|
---|
4671 | + int rate; /* sampling rate (Hz) */
|
---|
4672 | + double freqbase; /* frequency base */
|
---|
4673 | + double TimerBase; /* Timer base time (==sampling time) */
|
---|
4674 | + uint8 address; /* address register */
|
---|
4675 | + uint8 status; /* status flag */
|
---|
4676 | + uint8 statusmask; /* status mask */
|
---|
4677 | + uint mode; /* Reg.08 : CSM , notesel,etc. */
|
---|
4678 | +
|
---|
4679 | + /* Timer */
|
---|
4680 | + int T[2]; /* timer counter */
|
---|
4681 | + uint8 st[2]; /* timer enable */
|
---|
4682 | +
|
---|
4683 | + /* FM channel slots */
|
---|
4684 | + OPL_CH *P_CH; /* pointer of CH */
|
---|
4685 | + int max_ch; /* maximum channel */
|
---|
4686 | +
|
---|
4687 | + /* Rythm sention */
|
---|
4688 | + uint8 rythm; /* Rythm mode , key flag */
|
---|
4689 | +
|
---|
4690 | + /* time tables */
|
---|
4691 | + int AR_TABLE[76]; /* atttack rate tables */
|
---|
4692 | + int DR_TABLE[76]; /* decay rate tables */
|
---|
4693 | + uint FN_TABLE[1024];/* fnumber -> increment counter */
|
---|
4694 | +
|
---|
4695 | + /* LFO */
|
---|
4696 | + int *ams_table;
|
---|
4697 | + int *vib_table;
|
---|
4698 | + int amsCnt;
|
---|
4699 | + int amsIncr;
|
---|
4700 | + int vibCnt;
|
---|
4701 | + int vibIncr;
|
---|
4702 | +
|
---|
4703 | + /* wave selector enable flag */
|
---|
4704 | + uint8 wavesel;
|
---|
4705 | +
|
---|
4706 | + /* external event callback handler */
|
---|
4707 | + OPL_TIMERHANDLER TimerHandler; /* TIMER handler */
|
---|
4708 | + int TimerParam; /* TIMER parameter */
|
---|
4709 | + OPL_IRQHANDLER IRQHandler; /* IRQ handler */
|
---|
4710 | + int IRQParam; /* IRQ parameter */
|
---|
4711 | + OPL_UPDATEHANDLER UpdateHandler; /* stream update handler */
|
---|
4712 | + int UpdateParam; /* stream update parameter */
|
---|
4713 | +
|
---|
4714 | + Common::RandomSource rnd;
|
---|
4715 | +} FM_OPL;
|
---|
4716 | +
|
---|
4717 | +/* ---------- Generic interface section ---------- */
|
---|
4718 | +#define OPL_TYPE_YM3526 (0)
|
---|
4719 | +#define OPL_TYPE_YM3812 (OPL_TYPE_WAVESEL)
|
---|
4720 | +
|
---|
4721 | +void OPLBuildTables(int ENV_BITS_PARAM, int EG_ENT_PARAM);
|
---|
4722 | +
|
---|
4723 | +FM_OPL *OPLCreate(int type, int clock, int rate);
|
---|
4724 | +void OPLDestroy(FM_OPL *OPL);
|
---|
4725 | +void OPLSetTimerHandler(FM_OPL *OPL, OPL_TIMERHANDLER TimerHandler, int channelOffset);
|
---|
4726 | +void OPLSetIRQHandler(FM_OPL *OPL, OPL_IRQHANDLER IRQHandler, int param);
|
---|
4727 | +void OPLSetUpdateHandler(FM_OPL *OPL, OPL_UPDATEHANDLER UpdateHandler, int param);
|
---|
4728 | +
|
---|
4729 | +void OPLResetChip(FM_OPL *OPL);
|
---|
4730 | +int OPLWrite(FM_OPL *OPL, int a, int v);
|
---|
4731 | +unsigned char OPLRead(FM_OPL *OPL, int a);
|
---|
4732 | +int OPLTimerOver(FM_OPL *OPL, int c);
|
---|
4733 | +void OPLWriteReg(FM_OPL *OPL, int r, int v);
|
---|
4734 | +void YM3812UpdateOne(FM_OPL *OPL, int16 *buffer, int length, int interleave = 0);
|
---|
4735 | +
|
---|
4736 | +// Factory method
|
---|
4737 | +FM_OPL *makeAdlibOPL(int rate);
|
---|
4738 | +
|
---|
4739 | +// AdLib API implementation
|
---|
4740 | +class AdLib_MAME : public AdLib {
|
---|
4741 | +private:
|
---|
4742 | + FM_OPL *_opl;
|
---|
4743 | +public:
|
---|
4744 | + AdLib_MAME() : _opl(0) {}
|
---|
4745 | + ~AdLib_MAME();
|
---|
4746 | +
|
---|
4747 | + void init(int rate, kOplType type);
|
---|
4748 | + void reset();
|
---|
4749 | +
|
---|
4750 | + void write(int a, int v);
|
---|
4751 | + byte read(int a);
|
---|
4752 | +
|
---|
4753 | + void writeReg(int r, int v);
|
---|
4754 | +
|
---|
4755 | + void readBuffer(int16 *buffer, int length);
|
---|
4756 | +};
|
---|
4757 | +
|
---|
4758 | +} // end of namespace MAME
|
---|
4759 | +} // end of namespace AdLib
|
---|
4760 | +
|
---|
4761 | +#endif
|
---|
4762 | Index: sound/softsynth/adlib/dbopl.h
|
---|
4763 | ===================================================================
|
---|
4764 | --- sound/softsynth/adlib/dbopl.h (revision 0)
|
---|
4765 | +++ sound/softsynth/adlib/dbopl.h (revision 0)
|
---|
4766 | @@ -0,0 +1,284 @@
|
---|
4767 | +/* ScummVM - Graphic Adventure Engine
|
---|
4768 | + *
|
---|
4769 | + * ScummVM is the legal property of its developers, whose names
|
---|
4770 | + * are too numerous to list here. Please refer to the COPYRIGHT
|
---|
4771 | + * file distributed with this source distribution.
|
---|
4772 | + *
|
---|
4773 | + * This program is free software; you can redistribute it and/or
|
---|
4774 | + * modify it under the terms of the GNU General Public License
|
---|
4775 | + * as published by the Free Software Foundation; either version 2
|
---|
4776 | + * of the License, or (at your option) any later version.
|
---|
4777 | + *
|
---|
4778 | + * This program is distributed in the hope that it will be useful,
|
---|
4779 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
---|
4780 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
---|
4781 | + * GNU General Public License for more details.
|
---|
4782 | + *
|
---|
4783 | + * You should have received a copy of the GNU General Public License
|
---|
4784 | + * along with this program; if not, write to the Free Software
|
---|
4785 | + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
---|
4786 | + *
|
---|
4787 | + * $URL$
|
---|
4788 | + * $Id$
|
---|
4789 | + */
|
---|
4790 | +
|
---|
4791 | +/*
|
---|
4792 | + * Based on AdLib emulation code of DOSBox
|
---|
4793 | + * Copyright (C) 2002-2009 The DOSBox Team
|
---|
4794 | + * Licensed under GPLv2+
|
---|
4795 | + * http://www.dosbox.com
|
---|
4796 | + */
|
---|
4797 | +
|
---|
4798 | +#ifndef DISABLE_DOSBOX_ADLIB
|
---|
4799 | +
|
---|
4800 | +#ifndef SOUND_SOFTSYNTH_ADLIB_DBOPL_H
|
---|
4801 | +#define SOUND_SOFTSYNTH_ADLIB_DBOPL_H
|
---|
4802 | +
|
---|
4803 | +#include "common/scummsys.h"
|
---|
4804 | +#include "dosbox.h"
|
---|
4805 | +
|
---|
4806 | +//Use 8 handlers based on a small logatirmic wavetabe and an exponential table for volume
|
---|
4807 | +#define WAVE_HANDLER 10
|
---|
4808 | +//Use a logarithmic wavetable with an exponential table for volume
|
---|
4809 | +#define WAVE_TABLELOG 11
|
---|
4810 | +//Use a linear wavetable with a multiply table for volume
|
---|
4811 | +#define WAVE_TABLEMUL 12
|
---|
4812 | +
|
---|
4813 | +//Select the type of wave generator routine
|
---|
4814 | +#define DBOPL_WAVE WAVE_TABLEMUL
|
---|
4815 | +//Enable vibrato in the output
|
---|
4816 | +#define DBOPL_VIBRATO
|
---|
4817 | +//Enable tremolo in the output
|
---|
4818 | +#define DBOPL_TREMOLO
|
---|
4819 | +
|
---|
4820 | +namespace AdLib {
|
---|
4821 | +namespace DOSBox {
|
---|
4822 | +namespace DBOPL {
|
---|
4823 | +
|
---|
4824 | +// Define types required by DOSBox code
|
---|
4825 | +typedef int Bits;
|
---|
4826 | +typedef uint Bitu;
|
---|
4827 | +typedef int8 Bit8s;
|
---|
4828 | +typedef uint8 Bit8u;
|
---|
4829 | +typedef int16 Bit16s;
|
---|
4830 | +typedef uint16 Bit16u;
|
---|
4831 | +typedef int32 Bit32s;
|
---|
4832 | +typedef uint32 Bit32u;
|
---|
4833 | +
|
---|
4834 | +struct Chip;
|
---|
4835 | +struct Operator;
|
---|
4836 | +struct Channel;
|
---|
4837 | +
|
---|
4838 | +#if (DBOPL_WAVE == WAVE_HANDLER)
|
---|
4839 | +typedef Bits ( DB_FASTCALL *WaveHandler) ( Bitu i, Bitu volume );
|
---|
4840 | +#endif
|
---|
4841 | +
|
---|
4842 | +typedef Bits ( DBOPL::Operator::*VolumeHandler) ( );
|
---|
4843 | +typedef Channel* ( DBOPL::Channel::*SynthHandler) ( );
|
---|
4844 | +
|
---|
4845 | +//Different synth modes that can generate blocks of data
|
---|
4846 | +enum SynthMode {
|
---|
4847 | + smNone,
|
---|
4848 | + sm2AM,
|
---|
4849 | + sm2FM,
|
---|
4850 | + sm2Percussion,
|
---|
4851 | + sm3AM,
|
---|
4852 | + sm3FM,
|
---|
4853 | + sm3FMFM,
|
---|
4854 | + sm3AMFM,
|
---|
4855 | + sm3FMAM,
|
---|
4856 | + sm3AMAM,
|
---|
4857 | + sm3Percussion
|
---|
4858 | +};
|
---|
4859 | +
|
---|
4860 | +//Shifts for the values contained in chandata variable
|
---|
4861 | +enum {
|
---|
4862 | + SHIFT_KSLBASE = 16,
|
---|
4863 | + SHIFT_KEYCODE = 24
|
---|
4864 | +};
|
---|
4865 | +
|
---|
4866 | +struct Operator {
|
---|
4867 | +public:
|
---|
4868 | + //Masks for operator 20 values
|
---|
4869 | + enum {
|
---|
4870 | + MASK_KSR = 0x10,
|
---|
4871 | + MASK_SUSTAIN = 0x20,
|
---|
4872 | + MASK_VIBRATO = 0x40,
|
---|
4873 | + MASK_TREMOLO = 0x80
|
---|
4874 | + };
|
---|
4875 | +
|
---|
4876 | + enum State {
|
---|
4877 | + OFF,
|
---|
4878 | + RELEASE,
|
---|
4879 | + SUSTAIN,
|
---|
4880 | + DECAY,
|
---|
4881 | + ATTACK
|
---|
4882 | + };
|
---|
4883 | +
|
---|
4884 | + VolumeHandler volHandler;
|
---|
4885 | +
|
---|
4886 | +#if (DBOPL_WAVE == WAVE_HANDLER)
|
---|
4887 | + WaveHandler waveHandler; //Routine that generate a wave
|
---|
4888 | +#else
|
---|
4889 | + Bit16s* waveBase;
|
---|
4890 | + Bit32u waveMask;
|
---|
4891 | + Bit32u waveStart;
|
---|
4892 | +#endif
|
---|
4893 | + Bit32u waveIndex; //WAVE_BITS shifted counter of the frequency index
|
---|
4894 | + Bit32u waveAdd;
|
---|
4895 | +
|
---|
4896 | + Bit32u chanData; //Frequency/octave and derived data coming from whatever channel controls this
|
---|
4897 | + Bit32u freqMul; //Scale channel frequency with this, TODO maybe remove?
|
---|
4898 | + Bit32u vibrato; //Scaled up vibrato strength
|
---|
4899 | + Bit32s sustainLevel; //When stopping at sustain level stop here
|
---|
4900 | + Bit32s totalLevel; //totalLeve is added to every generated volume
|
---|
4901 | + Bit32s activeLevel; //The currently active volume
|
---|
4902 | +
|
---|
4903 | + Bit32u attackAdd; //Timers for the different states of the envelope
|
---|
4904 | + Bit32u decayAdd;
|
---|
4905 | + Bit32u releaseAdd;
|
---|
4906 | + Bit32u rateIndex; //Current position of the evenlope
|
---|
4907 | +
|
---|
4908 | + Bit8u rateZero; //Bits for the different states of the envelope having no changes
|
---|
4909 | + Bit8u keyOn; //Bitmask of different values that can generate keyon
|
---|
4910 | + //Registers, also used to check for changes
|
---|
4911 | + Bit8u reg20, reg40, reg60, reg80, regE0;
|
---|
4912 | + //Active part of the envelope we're in
|
---|
4913 | + Bit8u state;
|
---|
4914 | + //0xff when tremolo is enabled
|
---|
4915 | + Bit8u tremoloMask;
|
---|
4916 | + //Strength of the vibrato
|
---|
4917 | + Bit8u vibStrength;
|
---|
4918 | + //Keep track of the calculated KSR so we can check for changes
|
---|
4919 | + Bit8u ksr;
|
---|
4920 | +private:
|
---|
4921 | + void SetState( Bit8u s );
|
---|
4922 | + void UpdateAttack( const Chip* chip );
|
---|
4923 | + void UpdateRelease( const Chip* chip );
|
---|
4924 | + void UpdateDecay( const Chip* chip );
|
---|
4925 | +public:
|
---|
4926 | + void UpdateAttenuation();
|
---|
4927 | + void UpdateRates( const Chip* chip );
|
---|
4928 | + void UpdateFrequency( );
|
---|
4929 | +
|
---|
4930 | + void Write20( const Chip* chip, Bit8u val );
|
---|
4931 | + void Write40( const Chip* chip, Bit8u val );
|
---|
4932 | + void Write60( const Chip* chip, Bit8u val );
|
---|
4933 | + void Write80( const Chip* chip, Bit8u val );
|
---|
4934 | + void WriteE0( const Chip* chip, Bit8u val );
|
---|
4935 | +
|
---|
4936 | + bool Silent() const;
|
---|
4937 | + void KeyOn( Bit8u mask);
|
---|
4938 | + void KeyOff( Bit8u mask);
|
---|
4939 | +
|
---|
4940 | + template< State state>
|
---|
4941 | + Bits TemplateVolume( );
|
---|
4942 | +
|
---|
4943 | + Bit32s RateForward( Bit32u add );
|
---|
4944 | + Bitu ForwardWave();
|
---|
4945 | + Bitu ForwardVolume();
|
---|
4946 | +
|
---|
4947 | + Bits GetSample( Bits modulation );
|
---|
4948 | + Bits GetWave( Bitu index, Bitu vol );
|
---|
4949 | +public:
|
---|
4950 | + Operator();
|
---|
4951 | +};
|
---|
4952 | +
|
---|
4953 | +struct Channel {
|
---|
4954 | + Operator op[2];
|
---|
4955 | + inline Operator* Op( Bitu index ) {
|
---|
4956 | + return &( ( this + (index >> 1) )->op[ index & 1 ]);
|
---|
4957 | + }
|
---|
4958 | + SynthHandler synthHandler;
|
---|
4959 | + Bit32u chanData; //Frequency/octave and derived values
|
---|
4960 | + Bit32s old[2]; //Old data for feedback
|
---|
4961 | +
|
---|
4962 | + Bit8u feedback; //Feedback shift
|
---|
4963 | + Bit8u regB0; //Register values to check for changes
|
---|
4964 | + Bit8u regC0;
|
---|
4965 | + //This should correspond with reg104, bit 6 indicates a Percussion channel, bit 7 indicates a silent channel
|
---|
4966 | + Bit8u fourMask;
|
---|
4967 | + Bit8s maskLeft; //Sign extended values for both channel's panning
|
---|
4968 | + Bit8s maskRight;
|
---|
4969 | +
|
---|
4970 | + //Forward the channel data to the operators of the channel
|
---|
4971 | + void SetChanData( const Chip* chip, Bit32u data );
|
---|
4972 | + //Change in the chandata, check for new values and if we have to forward to operators
|
---|
4973 | + void UpdateFrequency( const Chip* chip, Bit8u fourOp );
|
---|
4974 | + void WriteA0( const Chip* chip, Bit8u val );
|
---|
4975 | + void WriteB0( const Chip* chip, Bit8u val );
|
---|
4976 | + void WriteC0( const Chip* chip, Bit8u val );
|
---|
4977 | + void ResetC0( const Chip* chip );
|
---|
4978 | +
|
---|
4979 | + //call this for the first channel
|
---|
4980 | + template< bool opl3Mode >
|
---|
4981 | + void GeneratePercussion( Bit32s* output );
|
---|
4982 | +
|
---|
4983 | + //Generate blocks of data in specific modes
|
---|
4984 | + template<SynthMode mode>
|
---|
4985 | + Channel* BlockTemplate( );
|
---|
4986 | + Channel();
|
---|
4987 | +};
|
---|
4988 | +
|
---|
4989 | +struct Chip {
|
---|
4990 | + //This is used as the base counter for vibrato and tremolo
|
---|
4991 | + Bit32u tremoloCounter;
|
---|
4992 | + Bit32u tremoloAdd;
|
---|
4993 | + Bit32u vibratoCounter;
|
---|
4994 | + Bit32u vibratoAdd;
|
---|
4995 | +
|
---|
4996 | + //Frequency scales for the different multiplications
|
---|
4997 | + Bit32u freqMul[16];
|
---|
4998 | + //Rates for decay and release for rate of this chip
|
---|
4999 | + Bit32u linearRates[76];
|
---|
5000 | + //Best match attack rates for the rate of this chip
|
---|
5001 | + Bit32u attackRates[76];
|
---|
5002 | +
|
---|
5003 | + //18 channels with 2 operators each
|
---|
5004 | + Channel chan[18];
|
---|
5005 | +
|
---|
5006 | + Bit8u reg104;
|
---|
5007 | + Bit8u reg08;
|
---|
5008 | + Bit8u reg04;
|
---|
5009 | + Bit8u regBD;
|
---|
5010 | + Bit8u vibratoShift;
|
---|
5011 | + Bit8u tremoloShift;
|
---|
5012 | + //Mask for allowed wave forms
|
---|
5013 | + Bit8u waveFormMask;
|
---|
5014 | + //0 or -1 when enabled
|
---|
5015 | + Bit8s opl3Active;
|
---|
5016 | +
|
---|
5017 | + Bit8u ForwardTremolo();
|
---|
5018 | + Bit8s ForwardVibrato();
|
---|
5019 | +
|
---|
5020 | + void WriteBD( Bit8u val );
|
---|
5021 | + void WriteReg(Bit32u reg, Bit8u val );
|
---|
5022 | +
|
---|
5023 | + Bit32u WriteAddr( Bit32u port, Bit8u val );
|
---|
5024 | +
|
---|
5025 | + void GenerateBlock2( Bitu samples );
|
---|
5026 | + void GenerateBlock3( Bitu samples );
|
---|
5027 | +
|
---|
5028 | + void Generate( Bit32u samples );
|
---|
5029 | + void Setup( Bit32u r );
|
---|
5030 | +
|
---|
5031 | + Chip();
|
---|
5032 | +};
|
---|
5033 | +
|
---|
5034 | +struct Handler : public DOSBox::Handler {
|
---|
5035 | + DBOPL::Chip chip;
|
---|
5036 | +
|
---|
5037 | + virtual Bit32u writeAddr( Bit32u port, Bit8u val );
|
---|
5038 | + virtual void writeReg( Bit32u addr, Bit8u val );
|
---|
5039 | + virtual void generate( Bit16s *chan, Bitu samples );
|
---|
5040 | + virtual void init( Bitu rate );
|
---|
5041 | +};
|
---|
5042 | +
|
---|
5043 | +} // end of namespace DBOPL
|
---|
5044 | +} // end of namespace DOSBox
|
---|
5045 | +} // end of namespace AdLib
|
---|
5046 | +
|
---|
5047 | +#endif
|
---|
5048 | +
|
---|
5049 | +#endif
|
---|
5050 | +
|
---|
5051 | Index: engines/sci/sfx/softseq/opl2.cpp
|
---|
5052 | ===================================================================
|
---|
5053 | --- engines/sci/sfx/softseq/opl2.cpp (revision 40184)
|
---|
5054 | +++ engines/sci/sfx/softseq/opl2.cpp (working copy)
|
---|
5055 | @@ -42,6 +42,8 @@
|
---|
5056 |
|
---|
5057 | ***************************************************************************/
|
---|
5058 |
|
---|
5059 | +#include "common/util.h"
|
---|
5060 | +
|
---|
5061 | #include "sci/tools.h"
|
---|
5062 | #include "sci/sfx/iterator.h"
|
---|
5063 | #include "../softseq.h"
|
---|
5064 | @@ -79,9 +81,6 @@
|
---|
5065 | #define ADLIB_LEFT 0
|
---|
5066 | #define ADLIB_RIGHT 1
|
---|
5067 |
|
---|
5068 | -/* #define OPL_INTERNAL_FREQ 3600000 */
|
---|
5069 | -#define OPL_INTERNAL_FREQ 3579545
|
---|
5070 | -
|
---|
5071 | static int ready = 0;
|
---|
5072 | static int pcmout_stereo = STEREO;
|
---|
5073 |
|
---|
5074 | @@ -157,21 +156,21 @@
|
---|
5075 |
|
---|
5076 | /* more shamelessly lifted from xmp and adplug. And altered. :) */
|
---|
5077 |
|
---|
5078 | -static int opl_write_L(int a, int v) {
|
---|
5079 | +static void opl_write_L(int a, int v) {
|
---|
5080 | adlib_reg_L[a] = v;
|
---|
5081 | OPLWrite(ym3812_L, 0x388, a);
|
---|
5082 | - return OPLWrite(ym3812_L, 0x389, v);
|
---|
5083 | + OPLWrite(ym3812_L, 0x389, v);
|
---|
5084 | }
|
---|
5085 |
|
---|
5086 | -static int opl_write_R(int a, int v) {
|
---|
5087 | +static void opl_write_R(int a, int v) {
|
---|
5088 | adlib_reg_R[a] = v;
|
---|
5089 | OPLWrite(ym3812_R, 0x388, a);
|
---|
5090 | - return OPLWrite(ym3812_R, 0x389, v);
|
---|
5091 | + OPLWrite(ym3812_R, 0x389, v);
|
---|
5092 | }
|
---|
5093 |
|
---|
5094 | -static int opl_write(int a, int v) {
|
---|
5095 | +static void opl_write(int a, int v) {
|
---|
5096 | opl_write_L(a, v);
|
---|
5097 | - return opl_write_R(a, v);
|
---|
5098 | + opl_write_R(a, v);
|
---|
5099 | }
|
---|
5100 |
|
---|
5101 | /*
|
---|
5102 | @@ -472,16 +471,13 @@
|
---|
5103 | We assume 16-bit stereo frames (ie 4 bytes)
|
---|
5104 | */
|
---|
5105 | static void opl2_poll(sfx_softseq_t *self, byte *dest, int count) {
|
---|
5106 | - int16 *buffer = (int16 *) dest;
|
---|
5107 | - int16 *ptr = buffer;
|
---|
5108 | + int16 *ptr = (int16 *)dest;
|
---|
5109 |
|
---|
5110 | - if (!ready) {
|
---|
5111 | + if (!ready)
|
---|
5112 | error("synth_mixer(): !ready \n");
|
---|
5113 | - }
|
---|
5114 |
|
---|
5115 | - if (!buffer) {
|
---|
5116 | + if (!ptr)
|
---|
5117 | error("synth_mixer(): !buffer \n");
|
---|
5118 | - }
|
---|
5119 |
|
---|
5120 | #if 0
|
---|
5121 | {
|
---|
5122 | @@ -509,10 +505,24 @@
|
---|
5123 | #endif
|
---|
5124 |
|
---|
5125 | if (pcmout_stereo) {
|
---|
5126 | - YM3812UpdateOne(ym3812_L, ptr, count, 1);
|
---|
5127 | - YM3812UpdateOne(ym3812_R, ptr + 1, count, 1);
|
---|
5128 | + int16 buffer[512];
|
---|
5129 | +
|
---|
5130 | + while (count > 0) {
|
---|
5131 | + int process = count > ARRAYSIZE(buffer) ? ARRAYSIZE(buffer) : count;
|
---|
5132 | + count -= process;
|
---|
5133 | +
|
---|
5134 | + YM3812UpdateOne(ym3812_L, buffer, process);
|
---|
5135 | + for (int i = 0; i < process; ++i)
|
---|
5136 | + ptr[(i << 1) + 0] = buffer[i];
|
---|
5137 | +
|
---|
5138 | + YM3812UpdateOne(ym3812_R, buffer, process);
|
---|
5139 | + for (int i = 0; i < process; ++i)
|
---|
5140 | + ptr[(i << 1) + 1] = buffer[i];
|
---|
5141 | +
|
---|
5142 | + ptr += (count << 1);
|
---|
5143 | + }
|
---|
5144 | } else {
|
---|
5145 | - YM3812UpdateOne(ym3812_L, ptr, count, 0);
|
---|
5146 | + YM3812UpdateOne(ym3812_L, ptr, count);
|
---|
5147 | }
|
---|
5148 | }
|
---|
5149 |
|
---|
5150 | @@ -533,10 +543,7 @@
|
---|
5151 | for (i = 48; i < 96; i++)
|
---|
5152 | make_sbi((adlib_def *)(data_ptr + 2 + (28 * i)), adlib_sbi[i]);
|
---|
5153 |
|
---|
5154 | - OPLBuildTables(FMOPL_ENV_BITS_HQ, FMOPL_EG_ENT_HQ);
|
---|
5155 | -
|
---|
5156 | - if (!(ym3812_L = OPLCreate(OPL_TYPE_YM3812, OPL_INTERNAL_FREQ, SAMPLE_RATE)) ||
|
---|
5157 | - !(ym3812_R = OPLCreate(OPL_TYPE_YM3812, OPL_INTERNAL_FREQ, SAMPLE_RATE))) {
|
---|
5158 | + if (!(ym3812_L = makeAdlibOPL(SAMPLE_RATE)) || !(ym3812_R = makeAdlibOPL(SAMPLE_RATE))) {
|
---|
5159 | sciprintf("[sfx:seq:opl2] Failure: Emulator init failed!\n");
|
---|
5160 | return SFX_ERROR;
|
---|
5161 | }
|
---|
5162 | @@ -549,12 +556,10 @@
|
---|
5163 |
|
---|
5164 |
|
---|
5165 | static void opl2_exit(sfx_softseq_t *self) {
|
---|
5166 | - FM_OPL *opl = ym3812_L;
|
---|
5167 | + OPLDestroy(ym3812_L);
|
---|
5168 | ym3812_L = NULL;
|
---|
5169 | - OPLDestroy(opl);
|
---|
5170 | - opl = ym3812_R;
|
---|
5171 | + OPLDestroy(ym3812_R);
|
---|
5172 | ym3812_R = NULL;
|
---|
5173 | - OPLDestroy(opl);
|
---|
5174 |
|
---|
5175 | // XXX deregister with pcm layer.
|
---|
5176 | }
|
---|