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1 #ifndef __FMOPL_H_ |
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2 #define __FMOPL_H_ |
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3 |
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4 /* --- select emulation chips --- */ |
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5 #define BUILD_YM3812 (HAS_YM3812) |
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6 //#define BUILD_YM3526 (HAS_YM3526) |
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7 //#define BUILD_Y8950 (HAS_Y8950) |
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8 |
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9 /* --- system optimize --- */ |
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10 /* select bit size of output : 8 or 16 */ |
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11 #define OPL_OUTPUT_BIT 16 |
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12 |
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13 /* compiler dependence */ |
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14 #ifndef OSD_CPU_H |
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15 #define OSD_CPU_H |
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16 typedef unsigned char UINT8; /* unsigned 8bit */ |
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17 typedef unsigned short UINT16; /* unsigned 16bit */ |
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18 typedef unsigned int UINT32; /* unsigned 32bit */ |
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19 typedef signed char INT8; /* signed 8bit */ |
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20 typedef signed short INT16; /* signed 16bit */ |
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21 typedef signed int INT32; /* signed 32bit */ |
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22 #endif |
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23 |
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24 #if (OPL_OUTPUT_BIT==16) |
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25 typedef INT16 OPLSAMPLE; |
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26 #endif |
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27 #if (OPL_OUTPUT_BIT==8) |
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28 typedef unsigned char OPLSAMPLE; |
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29 #endif |
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30 |
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31 |
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32 #if BUILD_Y8950 |
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33 #include "ymdeltat.h" |
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34 #endif |
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35 |
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36 typedef void (*OPL_TIMERHANDLER)(int channel,double interval_Sec); |
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37 typedef void (*OPL_IRQHANDLER)(int param,int irq); |
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38 typedef void (*OPL_UPDATEHANDLER)(int param,int min_interval_us); |
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39 typedef void (*OPL_PORTHANDLER_W)(int param,unsigned char data); |
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40 typedef unsigned char (*OPL_PORTHANDLER_R)(int param); |
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41 |
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42 /* !!!!! here is private section , do not access there member direct !!!!! */ |
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43 |
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44 #define OPL_TYPE_WAVESEL 0x01 /* waveform select */ |
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45 #define OPL_TYPE_ADPCM 0x02 /* DELTA-T ADPCM unit */ |
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46 #define OPL_TYPE_KEYBOARD 0x04 /* keyboard interface */ |
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47 #define OPL_TYPE_IO 0x08 /* I/O port */ |
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48 |
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49 /* Saving is necessary for member of the 'R' mark for suspend/resume */ |
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50 /* ---------- OPL one of slot ---------- */ |
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51 typedef struct fm_opl_slot { |
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52 INT32 TL; /* total level :TL << 8 */ |
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53 INT32 TLL; /* adjusted now TL */ |
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54 UINT8 KSR; /* key scale rate :(shift down bit) */ |
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55 INT32 *AR; /* attack rate :&AR_TABLE[AR<<2] */ |
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56 INT32 *DR; /* decay rate :&DR_TALBE[DR<<2] */ |
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57 INT32 SL; /* sustin level :SL_TALBE[SL] */ |
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58 INT32 *RR; /* release rate :&DR_TABLE[RR<<2] */ |
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59 UINT8 ksl; /* keyscale level :(shift down bits) */ |
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60 UINT8 ksr; /* key scale rate :kcode>>KSR */ |
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61 UINT32 mul; /* multiple :ML_TABLE[ML] */ |
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62 UINT32 Cnt; /* frequency count : */ |
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63 UINT32 Incr; /* frequency step : */ |
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64 /* envelope generator state */ |
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65 UINT8 eg_typ; /* envelope type flag */ |
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66 UINT8 evm; /* envelope phase */ |
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67 INT32 evc; /* envelope counter */ |
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68 INT32 eve; /* envelope counter end point */ |
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69 INT32 evs; /* envelope counter step */ |
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70 INT32 evsa; /* envelope step for AR :AR[ksr] */ |
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71 INT32 evsd; /* envelope step for DR :DR[ksr] */ |
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72 INT32 evsr; /* envelope step for RR :RR[ksr] */ |
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73 /* LFO */ |
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74 UINT8 ams; /* ams flag */ |
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75 UINT8 vib; /* vibrate flag */ |
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76 /* wave selector */ |
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77 INT32 **wavetable; |
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78 }OPL_SLOT; |
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79 |
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80 /* ---------- OPL one of channel ---------- */ |
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81 typedef struct fm_opl_channel { |
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82 OPL_SLOT SLOT[2]; |
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83 UINT8 CON; /* connection type */ |
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84 UINT8 FB; /* feed back :(shift down bit) */ |
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85 INT32 *connect1; /* slot1 output pointer */ |
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86 INT32 *connect2; /* slot2 output pointer */ |
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87 INT32 op1_out[2]; /* slot1 output for selfeedback */ |
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88 /* phase generator state */ |
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89 UINT32 block_fnum; /* block+fnum : */ |
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90 UINT8 kcode; /* key code : KeyScaleCode */ |
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91 UINT32 fc; /* Freq. Increment base */ |
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92 UINT32 ksl_base; /* KeyScaleLevel Base step */ |
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93 UINT8 keyon; /* key on/off flag */ |
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94 } OPL_CH; |
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95 |
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96 /* OPL state */ |
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97 typedef struct fm_opl_f { |
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98 UINT8 type; /* chip type */ |
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99 int clock; /* master clock (Hz) */ |
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100 int rate; /* sampling rate (Hz) */ |
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101 double freqbase; /* frequency base */ |
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102 double TimerBase; /* Timer base time (==sampling time) */ |
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103 UINT8 address; /* address register */ |
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104 UINT8 status; /* status flag */ |
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105 UINT8 statusmask; /* status mask */ |
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106 UINT32 mode; /* Reg.08 : CSM , notesel,etc. */ |
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107 /* Timer */ |
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108 int T[2]; /* timer counter */ |
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109 UINT8 st[2]; /* timer enable */ |
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110 /* FM channel slots */ |
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111 OPL_CH *P_CH; /* pointer of CH */ |
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112 int max_ch; /* maximum channel */ |
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113 /* Rythm sention */ |
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114 UINT8 rythm; /* Rythm mode , key flag */ |
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115 #if BUILD_Y8950 |
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116 /* Delta-T ADPCM unit (Y8950) */ |
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117 YM_DELTAT *deltat; /* DELTA-T ADPCM */ |
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118 #endif |
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119 /* Keyboard / I/O interface unit (Y8950) */ |
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120 UINT8 portDirection; |
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121 UINT8 portLatch; |
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122 OPL_PORTHANDLER_R porthandler_r; |
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123 OPL_PORTHANDLER_W porthandler_w; |
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124 int port_param; |
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125 OPL_PORTHANDLER_R keyboardhandler_r; |
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126 OPL_PORTHANDLER_W keyboardhandler_w; |
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127 int keyboard_param; |
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128 /* time tables */ |
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129 INT32 AR_TABLE[75]; /* atttack rate tables */ |
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130 INT32 DR_TABLE[75]; /* decay rate tables */ |
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131 UINT32 FN_TABLE[1024]; /* fnumber -> increment counter */ |
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132 /* LFO */ |
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133 INT32 *ams_table; |
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134 INT32 *vib_table; |
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135 INT32 amsCnt; |
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136 INT32 amsIncr; |
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137 INT32 vibCnt; |
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138 INT32 vibIncr; |
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139 /* wave selector enable flag */ |
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140 UINT8 wavesel; |
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141 /* external event callback handler */ |
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142 OPL_TIMERHANDLER TimerHandler; /* TIMER handler */ |
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143 int TimerParam; /* TIMER parameter */ |
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144 OPL_IRQHANDLER IRQHandler; /* IRQ handler */ |
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145 int IRQParam; /* IRQ parameter */ |
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146 OPL_UPDATEHANDLER UpdateHandler; /* stream update handler */ |
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147 int UpdateParam; /* stream update parameter */ |
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148 } FM_OPL; |
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149 |
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150 /* ---------- Generic interface section ---------- */ |
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151 #define OPL_TYPE_YM3526 (0) |
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152 #define OPL_TYPE_YM3812 (OPL_TYPE_WAVESEL) |
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153 #define OPL_TYPE_Y8950 (OPL_TYPE_ADPCM|OPL_TYPE_KEYBOARD|OPL_TYPE_IO) |
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154 |
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155 FM_OPL *OPLCreate(int type, int clock, int rate); |
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156 void OPLDestroy(FM_OPL *OPL); |
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157 void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset); |
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158 void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param); |
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159 void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param); |
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160 /* Y8950 port handlers */ |
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161 void OPLSetPortHandler(FM_OPL *OPL,OPL_PORTHANDLER_W PortHandler_w,OPL_PORTHANDLER_R PortHandler_r,int param); |
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162 void OPLSetKeyboardHandler(FM_OPL *OPL,OPL_PORTHANDLER_W KeyboardHandler_w,OPL_PORTHANDLER_R KeyboardHandler_r,int param); |
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163 |
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164 void OPLResetChip(FM_OPL *OPL); |
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165 int OPLWrite(FM_OPL *OPL,int a,int v); |
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166 unsigned char OPLRead(FM_OPL *OPL,int a); |
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167 int OPLTimerOver(FM_OPL *OPL,int c); |
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168 |
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169 /* YM3626/YM3812 local section */ |
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170 void YM3812UpdateOne(FM_OPL *OPL, INT16 *buffer, int length); |
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171 |
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172 void Y8950UpdateOne(FM_OPL *OPL, INT16 *buffer, int length); |
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173 |
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174 #endif |