1 #ifndef __FMOPL_H_ 2 #define __FMOPL_H_ 3 4 /* --- select emulation chips --- */ 5 #define BUILD_YM3812 (HAS_YM3812) 6 //#define BUILD_YM3526 (HAS_YM3526) 7 //#define BUILD_Y8950 (HAS_Y8950) 8 9 /* --- system optimize --- */ 10 /* select bit size of output : 8 or 16 */ 11 #define OPL_OUTPUT_BIT 16 12 13 /* compiler dependence */ 14 #ifndef OSD_CPU_H 15 #define OSD_CPU_H 16 typedef unsigned char UINT8; /* unsigned 8bit */ 17 typedef unsigned short UINT16; /* unsigned 16bit */ 18 typedef unsigned int UINT32; /* unsigned 32bit */ 19 typedef signed char INT8; /* signed 8bit */ 20 typedef signed short INT16; /* signed 16bit */ 21 typedef signed int INT32; /* signed 32bit */ 22 #endif 23 24 #if (OPL_OUTPUT_BIT==16) 25 typedef INT16 OPLSAMPLE; 26 #endif 27 #if (OPL_OUTPUT_BIT==8) 28 typedef unsigned char OPLSAMPLE; 29 #endif 30 31 32 #if BUILD_Y8950 33 #include "ymdeltat.h" 34 #endif 35 36 typedef void (*OPL_TIMERHANDLER)(int channel,double interval_Sec); 37 typedef void (*OPL_IRQHANDLER)(int param,int irq); 38 typedef void (*OPL_UPDATEHANDLER)(int param,int min_interval_us); 39 typedef void (*OPL_PORTHANDLER_W)(int param,unsigned char data); 40 typedef unsigned char (*OPL_PORTHANDLER_R)(int param); 41 42 /* !!!!! here is private section , do not access there member direct !!!!! */ 43 44 #define OPL_TYPE_WAVESEL 0x01 /* waveform select */ 45 #define OPL_TYPE_ADPCM 0x02 /* DELTA-T ADPCM unit */ 46 #define OPL_TYPE_KEYBOARD 0x04 /* keyboard interface */ 47 #define OPL_TYPE_IO 0x08 /* I/O port */ 48 49 /* Saving is necessary for member of the 'R' mark for suspend/resume */ 50 /* ---------- OPL one of slot ---------- */ 51 typedef struct fm_opl_slot { 52 INT32 TL; /* total level :TL << 8 */ 53 INT32 TLL; /* adjusted now TL */ 54 UINT8 KSR; /* key scale rate :(shift down bit) */ 55 INT32 *AR; /* attack rate :&AR_TABLE[AR<<2] */ 56 INT32 *DR; /* decay rate :&DR_TALBE[DR<<2] */ 57 INT32 SL; /* sustin level :SL_TALBE[SL] */ 58 INT32 *RR; /* release rate :&DR_TABLE[RR<<2] */ 59 UINT8 ksl; /* keyscale level :(shift down bits) */ 60 UINT8 ksr; /* key scale rate :kcode>>KSR */ 61 UINT32 mul; /* multiple :ML_TABLE[ML] */ 62 UINT32 Cnt; /* frequency count : */ 63 UINT32 Incr; /* frequency step : */ 64 /* envelope generator state */ 65 UINT8 eg_typ; /* envelope type flag */ 66 UINT8 evm; /* envelope phase */ 67 INT32 evc; /* envelope counter */ 68 INT32 eve; /* envelope counter end point */ 69 INT32 evs; /* envelope counter step */ 70 INT32 evsa; /* envelope step for AR :AR[ksr] */ 71 INT32 evsd; /* envelope step for DR :DR[ksr] */ 72 INT32 evsr; /* envelope step for RR :RR[ksr] */ 73 /* LFO */ 74 UINT8 ams; /* ams flag */ 75 UINT8 vib; /* vibrate flag */ 76 /* wave selector */ 77 INT32 **wavetable; 78 }OPL_SLOT; 79 80 /* ---------- OPL one of channel ---------- */ 81 typedef struct fm_opl_channel { 82 OPL_SLOT SLOT[2]; 83 UINT8 CON; /* connection type */ 84 UINT8 FB; /* feed back :(shift down bit) */ 85 INT32 *connect1; /* slot1 output pointer */ 86 INT32 *connect2; /* slot2 output pointer */ 87 INT32 op1_out[2]; /* slot1 output for selfeedback */ 88 /* phase generator state */ 89 UINT32 block_fnum; /* block+fnum : */ 90 UINT8 kcode; /* key code : KeyScaleCode */ 91 UINT32 fc; /* Freq. Increment base */ 92 UINT32 ksl_base; /* KeyScaleLevel Base step */ 93 UINT8 keyon; /* key on/off flag */ 94 } OPL_CH; 95 96 /* OPL state */ 97 typedef struct fm_opl_f { 98 UINT8 type; /* chip type */ 99 int clock; /* master clock (Hz) */ 100 int rate; /* sampling rate (Hz) */ 101 double freqbase; /* frequency base */ 102 double TimerBase; /* Timer base time (==sampling time) */ 103 UINT8 address; /* address register */ 104 UINT8 status; /* status flag */ 105 UINT8 statusmask; /* status mask */ 106 UINT32 mode; /* Reg.08 : CSM , notesel,etc. */ 107 /* Timer */ 108 int T[2]; /* timer counter */ 109 UINT8 st[2]; /* timer enable */ 110 /* FM channel slots */ 111 OPL_CH *P_CH; /* pointer of CH */ 112 int max_ch; /* maximum channel */ 113 /* Rhythm sention */ 114 UINT8 rhythm; /* Rhythm mode , key flag */ 115 #if BUILD_Y8950 116 /* Delta-T ADPCM unit (Y8950) */ 117 YM_DELTAT *deltat; /* DELTA-T ADPCM */ 118 #endif 119 /* Keyboard / I/O interface unit (Y8950) */ 120 UINT8 portDirection; 121 UINT8 portLatch; 122 OPL_PORTHANDLER_R porthandler_r; 123 OPL_PORTHANDLER_W porthandler_w; 124 int port_param; 125 OPL_PORTHANDLER_R keyboardhandler_r; 126 OPL_PORTHANDLER_W keyboardhandler_w; 127 int keyboard_param; 128 /* time tables */ 129 INT32 AR_TABLE[75]; /* atttack rate tables */ 130 INT32 DR_TABLE[75]; /* decay rate tables */ 131 UINT32 FN_TABLE[1024]; /* fnumber -> increment counter */ 132 /* LFO */ 133 INT32 *ams_table; 134 INT32 *vib_table; 135 INT32 amsCnt; 136 INT32 amsIncr; 137 INT32 vibCnt; 138 INT32 vibIncr; 139 /* wave selector enable flag */ 140 UINT8 wavesel; 141 /* external event callback handler */ 142 OPL_TIMERHANDLER TimerHandler; /* TIMER handler */ 143 int TimerParam; /* TIMER parameter */ 144 OPL_IRQHANDLER IRQHandler; /* IRQ handler */ 145 int IRQParam; /* IRQ parameter */ 146 OPL_UPDATEHANDLER UpdateHandler; /* stream update handler */ 147 int UpdateParam; /* stream update parameter */ 148 } FM_OPL; 149 150 /* ---------- Generic interface section ---------- */ 151 #define OPL_TYPE_YM3526 (0) 152 #define OPL_TYPE_YM3812 (OPL_TYPE_WAVESEL) 153 #define OPL_TYPE_Y8950 (OPL_TYPE_ADPCM|OPL_TYPE_KEYBOARD|OPL_TYPE_IO) 154 155 FM_OPL *OPLCreate(int type, int clock, int rate); 156 void OPLDestroy(FM_OPL *OPL); 157 void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset); 158 void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param); 159 void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param); 160 /* Y8950 port handlers */ 161 void OPLSetPortHandler(FM_OPL *OPL,OPL_PORTHANDLER_W PortHandler_w,OPL_PORTHANDLER_R PortHandler_r,int param); 162 void OPLSetKeyboardHandler(FM_OPL *OPL,OPL_PORTHANDLER_W KeyboardHandler_w,OPL_PORTHANDLER_R KeyboardHandler_r,int param); 163 164 void OPLResetChip(FM_OPL *OPL); 165 int OPLWrite(FM_OPL *OPL,int a,int v); 166 unsigned char OPLRead(FM_OPL *OPL,int a); 167 int OPLTimerOver(FM_OPL *OPL,int c); 168 169 /* YM3626/YM3812 local section */ 170 void YM3812UpdateOne(FM_OPL *OPL, INT16 *buffer, int length); 171 172 void Y8950UpdateOne(FM_OPL *OPL, INT16 *buffer, int length); 173 174 #endif 175