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#ifndef __FMOPL_H_
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#define __FMOPL_H_
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/* --- select emulation chips --- */
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#define BUILD_YM3812 (HAS_YM3812)
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//#define BUILD_YM3526 (HAS_YM3526)
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//#define BUILD_Y8950  (HAS_Y8950)
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/* --- system optimize --- */
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/* select bit size of output : 8 or 16 */
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#define OPL_OUTPUT_BIT 16
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/* compiler dependence */
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#ifndef OSD_CPU_H
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#define OSD_CPU_H
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typedef unsigned char        UINT8;   /* unsigned  8bit */
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typedef unsigned short        UINT16;  /* unsigned 16bit */
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typedef unsigned int        UINT32;  /* unsigned 32bit */
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typedef signed char                INT8;    /* signed  8bit   */
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typedef signed short        INT16;   /* signed 16bit   */
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typedef signed int                INT32;   /* signed 32bit   */
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#endif
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#if (OPL_OUTPUT_BIT==16)
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typedef INT16 OPLSAMPLE;
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#endif
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#if (OPL_OUTPUT_BIT==8)
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typedef unsigned char  OPLSAMPLE;
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#endif
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#if BUILD_Y8950
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#include "ymdeltat.h"
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#endif
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typedef void (*OPL_TIMERHANDLER)(int channel,double interval_Sec);
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typedef void (*OPL_IRQHANDLER)(int param,int irq);
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typedef void (*OPL_UPDATEHANDLER)(int param,int min_interval_us);
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typedef void (*OPL_PORTHANDLER_W)(int param,unsigned char data);
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typedef unsigned char (*OPL_PORTHANDLER_R)(int param);
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/* !!!!! here is private section , do not access there member direct !!!!! */
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#define OPL_TYPE_WAVESEL   0x01  /* waveform select    */
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#define OPL_TYPE_ADPCM     0x02  /* DELTA-T ADPCM unit */
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#define OPL_TYPE_KEYBOARD  0x04  /* keyboard interface */
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#define OPL_TYPE_IO        0x08  /* I/O port */
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/* Saving is necessary for member of the 'R' mark for suspend/resume */
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/* ---------- OPL one of slot  ---------- */
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typedef struct fm_opl_slot {
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        INT32 TL;                /* total level     :TL << 8            */
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        INT32 TLL;                /* adjusted now TL                     */
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        UINT8  KSR;                /* key scale rate  :(shift down bit)   */
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        INT32 *AR;                /* attack rate     :&AR_TABLE[AR<<2]   */
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        INT32 *DR;                /* decay rate      :&DR_TALBE[DR<<2]   */
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        INT32 SL;                /* sustin level    :SL_TALBE[SL]       */
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        INT32 *RR;                /* release rate    :&DR_TABLE[RR<<2]   */
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        UINT8 ksl;                /* keyscale level  :(shift down bits)  */
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        UINT8 ksr;                /* key scale rate  :kcode>>KSR         */
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        UINT32 mul;                /* multiple        :ML_TABLE[ML]       */
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        UINT32 Cnt;                /* frequency count :                   */
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        UINT32 Incr;        /* frequency step  :                   */
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        /* envelope generator state */
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        UINT8 eg_typ;        /* envelope type flag                  */
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        UINT8 evm;                /* envelope phase                      */
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        INT32 evc;                /* envelope counter                    */
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        INT32 eve;                /* envelope counter end point          */
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        INT32 evs;                /* envelope counter step               */
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        INT32 evsa;        /* envelope step for AR :AR[ksr]           */
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        INT32 evsd;        /* envelope step for DR :DR[ksr]           */
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        INT32 evsr;        /* envelope step for RR :RR[ksr]           */
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        /* LFO */
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        UINT8 ams;                /* ams flag                            */
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        UINT8 vib;                /* vibrate flag                        */
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        /* wave selector */
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        INT32 **wavetable;
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}OPL_SLOT;
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/* ---------- OPL one of channel  ---------- */
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typedef struct fm_opl_channel {
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        OPL_SLOT SLOT[2];
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        UINT8 CON;                        /* connection type                     */
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        UINT8 FB;                        /* feed back       :(shift down bit)   */
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        INT32 *connect1;        /* slot1 output pointer                */
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        INT32 *connect2;        /* slot2 output pointer                */
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        INT32 op1_out[2];        /* slot1 output for selfeedback        */
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        /* phase generator state */
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        UINT32  block_fnum;        /* block+fnum      :                   */
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        UINT8 kcode;                /* key code        : KeyScaleCode      */
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        UINT32  fc;                        /* Freq. Increment base                */
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        UINT32  ksl_base;        /* KeyScaleLevel Base step             */
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        UINT8 keyon;                /* key on/off flag                     */
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} OPL_CH;
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/* OPL state */
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typedef struct fm_opl_f {
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        UINT8 type;                        /* chip type                         */
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        int clock;                        /* master clock  (Hz)                */
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        int rate;                        /* sampling rate (Hz)                */
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        double freqbase;        /* frequency base                    */
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        double TimerBase;        /* Timer base time (==sampling time) */
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        UINT8 address;                /* address register                  */
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        UINT8 status;                /* status flag                       */
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        UINT8 statusmask;        /* status mask                       */
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        UINT32 mode;                /* Reg.08 : CSM , notesel,etc.       */
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        /* Timer */
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        int T[2];                        /* timer counter                     */
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        UINT8 st[2];                /* timer enable                      */
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        /* FM channel slots */
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        OPL_CH *P_CH;                /* pointer of CH                     */
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        int        max_ch;                        /* maximum channel                   */
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        /* Rhythm sention */
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        UINT8 rhythm;                /* Rhythm mode , key flag */
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#if BUILD_Y8950
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        /* Delta-T ADPCM unit (Y8950) */
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        YM_DELTAT *deltat;                        /* DELTA-T ADPCM       */
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#endif
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        /* Keyboard / I/O interface unit (Y8950) */
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        UINT8 portDirection;
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        UINT8 portLatch;
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        OPL_PORTHANDLER_R porthandler_r;
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        OPL_PORTHANDLER_W porthandler_w;
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        int port_param;
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        OPL_PORTHANDLER_R keyboardhandler_r;
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        OPL_PORTHANDLER_W keyboardhandler_w;
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        int keyboard_param;
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        /* time tables */
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        INT32 AR_TABLE[75];        /* atttack rate tables */
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        INT32 DR_TABLE[75];        /* decay rate tables   */
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        UINT32 FN_TABLE[1024];  /* fnumber -> increment counter */
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        /* LFO */
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        INT32 *ams_table;
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        INT32 *vib_table;
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        INT32 amsCnt;
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        INT32 amsIncr;
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        INT32 vibCnt;
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        INT32 vibIncr;
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        /* wave selector enable flag */
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        UINT8 wavesel;
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        /* external event callback handler */
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        OPL_TIMERHANDLER  TimerHandler;                /* TIMER handler   */
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        int TimerParam;                                                /* TIMER parameter */
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        OPL_IRQHANDLER    IRQHandler;                /* IRQ handler    */
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        int IRQParam;                                                /* IRQ parameter  */
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        OPL_UPDATEHANDLER UpdateHandler;        /* stream update handler   */
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        int UpdateParam;                                        /* stream update parameter */
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} FM_OPL;
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/* ---------- Generic interface section ---------- */
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#define OPL_TYPE_YM3526 (0)
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#define OPL_TYPE_YM3812 (OPL_TYPE_WAVESEL)
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#define OPL_TYPE_Y8950  (OPL_TYPE_ADPCM|OPL_TYPE_KEYBOARD|OPL_TYPE_IO)
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FM_OPL *OPLCreate(int type, int clock, int rate);
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void OPLDestroy(FM_OPL *OPL);
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void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset);
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void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param);
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void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param);
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/* Y8950 port handlers */
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void OPLSetPortHandler(FM_OPL *OPL,OPL_PORTHANDLER_W PortHandler_w,OPL_PORTHANDLER_R PortHandler_r,int param);
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void OPLSetKeyboardHandler(FM_OPL *OPL,OPL_PORTHANDLER_W KeyboardHandler_w,OPL_PORTHANDLER_R KeyboardHandler_r,int param);
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void OPLResetChip(FM_OPL *OPL);
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int OPLWrite(FM_OPL *OPL,int a,int v);
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unsigned char OPLRead(FM_OPL *OPL,int a);
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int OPLTimerOver(FM_OPL *OPL,int c);
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/* YM3626/YM3812 local section */
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void YM3812UpdateOne(FM_OPL *OPL, INT16 *buffer, int length);
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void Y8950UpdateOne(FM_OPL *OPL, INT16 *buffer, int length);
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#endif