Archipelago » qemu

#ifndef __FMOPL_H_

#define __FMOPL_H_

/* --- select emulation chips --- */

#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

/* compiler dependence */

#ifndef OSD_CPU_H

#define OSD_CPU_H

typedef unsigned char        UINT8;   /* unsigned  8bit */

typedef unsigned short        UINT16;  /* unsigned 16bit */

typedef unsigned int        UINT32;  /* unsigned 32bit */

typedef signed char                INT8;    /* signed  8bit   */

typedef signed short        INT16;   /* signed 16bit   */

typedef signed int                INT32;   /* signed 32bit   */

#endif

#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"

#endif

typedef 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 */

/* Saving is necessary for member of the 'R' mark for suspend/resume */

/* ---------- 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