1 #ifndef FMOPL_H 2 #define FMOPL_H 3 4 /* --- select emulation chips --- */ 5 #define BUILD_YM3812 (HAS_YM3812) 6 7 /* --- system optimize --- */ 8 /* select bit size of output : 8 or 16 */ 9 #define OPL_OUTPUT_BIT 16 10 11 /* compiler dependence */ 12 #ifndef OSD_CPU_H 13 #define OSD_CPU_H 14 typedef unsigned char UINT8; /* unsigned 8bit */ 15 typedef unsigned short UINT16; /* unsigned 16bit */ 16 typedef unsigned int UINT32; /* unsigned 32bit */ 17 typedef signed char INT8; /* signed 8bit */ 18 typedef signed short INT16; /* signed 16bit */ 19 typedef signed int INT32; /* signed 32bit */ 20 #endif 21 22 #if (OPL_OUTPUT_BIT==16) 23 typedef INT16 OPLSAMPLE; 24 #endif 25 #if (OPL_OUTPUT_BIT==8) 26 typedef unsigned char OPLSAMPLE; 27 #endif 28 29 typedef void (*OPL_TIMERHANDLER)(int channel,double interval_Sec); 30 typedef void (*OPL_IRQHANDLER)(int param,int irq); 31 typedef void (*OPL_UPDATEHANDLER)(int param,int min_interval_us); 32 typedef void (*OPL_PORTHANDLER_W)(int param,unsigned char data); 33 typedef unsigned char (*OPL_PORTHANDLER_R)(int param); 34 35 /* !!!!! here is private section , do not access there member direct !!!!! */ 36 37 #define OPL_TYPE_WAVESEL 0x01 /* waveform select */ 38 #define OPL_TYPE_ADPCM 0x02 /* DELTA-T ADPCM unit */ 39 #define OPL_TYPE_KEYBOARD 0x04 /* keyboard interface */ 40 #define OPL_TYPE_IO 0x08 /* I/O port */ 41 42 /* Saving is necessary for member of the 'R' mark for suspend/resume */ 43 /* ---------- OPL one of slot ---------- */ 44 typedef struct fm_opl_slot { 45 INT32 TL; /* total level :TL << 8 */ 46 INT32 TLL; /* adjusted now TL */ 47 UINT8 KSR; /* key scale rate :(shift down bit) */ 48 INT32 *AR; /* attack rate :&AR_TABLE[AR<<2] */ 49 INT32 *DR; /* decay rate :&DR_TALBE[DR<<2] */ 50 INT32 SL; /* sustin level :SL_TALBE[SL] */ 51 INT32 *RR; /* release rate :&DR_TABLE[RR<<2] */ 52 UINT8 ksl; /* keyscale level :(shift down bits) */ 53 UINT8 ksr; /* key scale rate :kcode>>KSR */ 54 UINT32 mul; /* multiple :ML_TABLE[ML] */ 55 UINT32 Cnt; /* frequency count : */ 56 UINT32 Incr; /* frequency step : */ 57 /* envelope generator state */ 58 UINT8 eg_typ; /* envelope type flag */ 59 UINT8 evm; /* envelope phase */ 60 INT32 evc; /* envelope counter */ 61 INT32 eve; /* envelope counter end point */ 62 INT32 evs; /* envelope counter step */ 63 INT32 evsa; /* envelope step for AR :AR[ksr] */ 64 INT32 evsd; /* envelope step for DR :DR[ksr] */ 65 INT32 evsr; /* envelope step for RR :RR[ksr] */ 66 /* LFO */ 67 UINT8 ams; /* ams flag */ 68 UINT8 vib; /* vibrate flag */ 69 /* wave selector */ 70 INT32 **wavetable; 71 }OPL_SLOT; 72 73 /* ---------- OPL one of channel ---------- */ 74 typedef struct fm_opl_channel { 75 OPL_SLOT SLOT[2]; 76 UINT8 CON; /* connection type */ 77 UINT8 FB; /* feed back :(shift down bit) */ 78 INT32 *connect1; /* slot1 output pointer */ 79 INT32 *connect2; /* slot2 output pointer */ 80 INT32 op1_out[2]; /* slot1 output for selfeedback */ 81 /* phase generator state */ 82 UINT32 block_fnum; /* block+fnum : */ 83 UINT8 kcode; /* key code : KeyScaleCode */ 84 UINT32 fc; /* Freq. Increment base */ 85 UINT32 ksl_base; /* KeyScaleLevel Base step */ 86 UINT8 keyon; /* key on/off flag */ 87 } OPL_CH; 88 89 /* OPL state */ 90 typedef struct fm_opl_f { 91 UINT8 type; /* chip type */ 92 int clock; /* master clock (Hz) */ 93 int rate; /* sampling rate (Hz) */ 94 double freqbase; /* frequency base */ 95 double TimerBase; /* Timer base time (==sampling time) */ 96 UINT8 address; /* address register */ 97 UINT8 status; /* status flag */ 98 UINT8 statusmask; /* status mask */ 99 UINT32 mode; /* Reg.08 : CSM , notesel,etc. */ 100 /* Timer */ 101 int T[2]; /* timer counter */ 102 UINT8 st[2]; /* timer enable */ 103 /* FM channel slots */ 104 OPL_CH *P_CH; /* pointer of CH */ 105 int max_ch; /* maximum channel */ 106 /* Rhythm sention */ 107 UINT8 rhythm; /* Rhythm mode , key flag */ 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_YM3812 (OPL_TYPE_WAVESEL) 138 139 FM_OPL *OPLCreate(int type, int clock, int rate); 140 void OPLDestroy(FM_OPL *OPL); 141 void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset); 142 void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param); 143 void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param); 144 145 void OPLResetChip(FM_OPL *OPL); 146 int OPLWrite(FM_OPL *OPL,int a,int v); 147 unsigned char OPLRead(FM_OPL *OPL,int a); 148 int OPLTimerOver(FM_OPL *OPL,int c); 149 150 /* YM3626/YM3812 local section */ 151 void YM3812UpdateOne(FM_OPL *OPL, INT16 *buffer, int length); 152 #endif 153