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