#ifndef __FMOPL_H_#define __FMOPL_H_#define BUILD_YM3812 (HAS_YM3812)#define BUILD_YM3526 (HAS_YM3526)#define BUILD_Y8950  (HAS_Y8950)/* --- system optimize --- *//* select bit size of output : 8 or 16 */#define OPL_OUTPUT_BIT 16#if (OPL_OUTPUT_BIT==16)typedef INT16 OPLSAMPLE;#endif#if (OPL_OUTPUT_BIT==8)typedef unsigned char  OPLSAMPLE;#endif#if BUILD_Y8950#include "ymdeltat.h"#endiftypedef void (*OPL_TIMERHANDLER)(int channel,double interval_Sec);typedef void (*OPL_IRQHANDLER)(int param,int irq);typedef void (*OPL_UPDATEHANDLER)(int param,int min_interval_us);typedef void (*OPL_PORTHANDLER_W)(int param,unsigned char data);typedef unsigned char (*OPL_PORTHANDLER_R)(int param);/* !!!!! here is private section , do not access there member direct !!!!! */#define OPL_TYPE_WAVESEL   0x01  /* waveform select    */#define OPL_TYPE_ADPCM     0x02  /* DELTA-T ADPCM unit */#define OPL_TYPE_KEYBOARD  0x04  /* keyboard interface */#define OPL_TYPE_IO        0x08  /* I/O port *//* ---------- OPL one of slot  ---------- */typedef struct fm_opl_slot {	INT32 TL;		/* total level     :TL << 8            */	INT32 TLL;		/* adjusted now TL                     */	UINT8  KSR;		/* key scale rate  :(shift down bit)   */	INT32 *AR;		/* attack rate     :&AR_TABLE[AR<<2]   */	INT32 *DR;		/* decay rate      :&DR_TALBE[DR<<2]   */	INT32 SL;		/* sustin level    :SL_TALBE[SL]       */	INT32 *RR;		/* release rate    :&DR_TABLE[RR<<2]   */	UINT8 ksl;		/* keyscale level  :(shift down bits)  */	UINT8 ksr;		/* key scale rate  :kcode>>KSR         */	UINT32 mul;		/* multiple        :ML_TABLE[ML]       */	UINT32 Cnt;		/* frequency count :                   */	UINT32 Incr;	/* frequency step  :                   */	/* envelope generator state */	UINT8 eg_typ;	/* envelope type flag                  */	UINT8 evm;		/* envelope phase                      */	INT32 evc;		/* envelope counter                    */	INT32 eve;		/* envelope counter end point          */	INT32 evs;		/* envelope counter step               */	INT32 evsa;	/* envelope step for AR :AR[ksr]       */	INT32 evsd;	/* envelope step for DR :DR[ksr]       */	INT32 evsr;	/* envelope step for RR :RR[ksr]       */	/* LFO */	UINT8 ams;		/* ams flag                            */	UINT8 vib;		/* vibrate flag                        */	/* wave selector */	INT32 **wavetable;}OPL_SLOT;/* ---------- OPL one of channel  ---------- */typedef struct fm_opl_channel {	OPL_SLOT SLOT[2];	UINT8 CON;			/* connection type                     */	UINT8 FB;			/* feed back       :(shift down bit)   */	INT32 *connect1;	/* slot1 output pointer                */	INT32 *connect2;	/* slot2 output pointer                */	INT32 op1_out[2];	/* slot1 output for selfeedback        */	/* phase generator state */	UINT32  block_fnum;	/* block+fnum      :                   */	UINT8 kcode;		/* key code        : KeyScaleCode      */	UINT32  fc;			/* Freq. Increment base                */	UINT32  ksl_base;	/* KeyScaleLevel Base step             */	UINT8 keyon;		/* key on/off flag                     */} OPL_CH;/* OPL state */typedef struct fm_opl_f {	UINT8 type;			/* chip type                        */	int clock;			/* master clock  (Hz)                */	int rate;			/* sampling rate (Hz)                */	double freqbase;	/* frequency base                    */	double TimerBase;	/* Timer base time (==sampling time) */	UINT8 address;		/* address register                  */	UINT8 status;		/* status flag                       */	UINT8 statusmask;	/* status mask                       */	UINT32 mode;		/* Reg.08 : CSM , notesel,etc.       */	/* Timer */	int T[2];			/* timer counter       */	UINT8 st[2];		/* timer enable        */	/* FM channel slots */	OPL_CH *P_CH;		/* pointer of CH       */	int	max_ch;			/* maximum channel     */	/* Rythm sention */	UINT8 rythm;		/* Rythm mode , key flag */#if BUILD_Y8950	/* Delta-T ADPCM unit (Y8950) */	YM_DELTAT *deltat;			/* DELTA-T ADPCM       */#endif	/* Keyboard / I/O interface unit (Y8950) */	UINT8 portDirection;	UINT8 portLatch;	OPL_PORTHANDLER_R porthandler_r;	OPL_PORTHANDLER_W porthandler_w;	int port_param;	OPL_PORTHANDLER_R keyboardhandler_r;	OPL_PORTHANDLER_W keyboardhandler_w;	int keyboard_param;	/* time tables */	INT32 AR_TABLE[75];	/* atttack rate tables */	INT32 DR_TABLE[75];	/* decay rate tables   */	UINT32 FN_TABLE[1024];  /* fnumber -> increment counter */	/* LFO */	INT32 *ams_table;	INT32 *vib_table;	INT32 amsCnt;	INT32 amsIncr;	INT32 vibCnt;	INT32 vibIncr;	/* wave selector enable flag */	UINT8 wavesel;	/* external event callback handler */	OPL_TIMERHANDLER  TimerHandler;		/* TIMER handler   */	int TimerParam;						/* TIMER parameter */	OPL_IRQHANDLER    IRQHandler;		/* IRQ handler    */	int IRQParam;						/* IRQ parameter  */	OPL_UPDATEHANDLER UpdateHandler;	/* stream update handler   */	int UpdateParam;					/* stream update parameter */} FM_OPL;/* ---------- Generic interface section ---------- */#define OPL_TYPE_YM3526 (0)#define OPL_TYPE_YM3812 (OPL_TYPE_WAVESEL)#define OPL_TYPE_Y8950  (OPL_TYPE_ADPCM|OPL_TYPE_KEYBOARD|OPL_TYPE_IO)FM_OPL *OPLCreate(int type, int clock, int rate);void OPLDestroy(FM_OPL *OPL);void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset);void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param);void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param);/* Y8950 port handlers */void OPLSetPortHandler(FM_OPL *OPL,OPL_PORTHANDLER_W PortHandler_w,OPL_PORTHANDLER_R PortHandler_r,int param);void OPLSetKeyboardHandler(FM_OPL *OPL,OPL_PORTHANDLER_W KeyboardHandler_w,OPL_PORTHANDLER_R KeyboardHandler_r,int param);void OPLResetChip(FM_OPL *OPL);int OPLWrite(FM_OPL *OPL,int a,int v);unsigned char OPLRead(FM_OPL *OPL,int a);int OPLTimerOver(FM_OPL *OPL,int c);/* YM3626/YM3812 local section */void YM3812UpdateOne(FM_OPL *OPL, INT16 *buffer, int length);void Y8950UpdateOne(FM_OPL *OPL, INT16 *buffer, int length);#endif