/*  File: fm.h -- header file for software emuration for FM sound genelator*/#ifndef _H_FM_FM_#define _H_FM_FM_////// starshine - one chip 4 me!#define HAS_YM2612 1#define BUILD_YM2612 (HAS_YM2612)       // build YM2612 emulator#define BUILD_YM2203 (HAS_YM2203)       /* build YM2203(OPN)   emulator */#define BUILD_YM2608 (HAS_YM2608)       /* build YM2608(OPNA)  emulator */#define BUILD_YM2610 (HAS_YM2610)       /* build YM2610(OPNB)  emulator */#define BUILD_YM2610B (HAS_YM2610B)     /* build YM2610B(OPNB?)emulator */#define BUILD_YM2151 (HAS_YM2151)       /* build YM2151(OPM)   emulator *//* stereo mixing / separate *///#define FM_STEREO_MIX/* output bit size 8 or 16 */#define FM_OUTPUT_BIT 16#define YM2203_NUMBUF 1#ifdef FM_STEREO_MIX  #define YM2151_NUMBUF 1  #define YM2608_NUMBUF 1  #define YM2612_NUMBUF 1  #define YM2610_NUMBUF  1#else  #define YM2151_NUMBUF 2    /* FM L+R */  #define YM2608_NUMBUF 2    /* FM L+R+ADPCM+RYTHM */  #define YM2612_NUMBUF 2    /* FM L+R */  #define YM2610_NUMBUF  2#endif#if (FM_OUTPUT_BIT==16)typedef unsigned short FMSAMPLE;typedef unsigned long FMSAMPLE_MIX;#endif#if (FM_OUTPUT_BIT==8)typedef unsigned char  FMSAMPLE;typedef unsigned short FMSAMPLE_MIX;#endif/* For YM2151/YM2608/YM2612 option */typedef void (*FM_TIMERHANDLER)(int n,int c,int cnt,double stepTime);typedef void (*FM_IRQHANDLER)(int n,int irq);/* FM_TIMERHANDLER : Stop or Start timer         *//* int n          = chip number                  *//* int c          = Channel 0=TimerA,1=TimerB    *//* int count      = timer count (0=stop)         *//* doube stepTime = step time of one count (sec.)*//* FM_IRQHHANDLER : IRQ level changing sense     *//* int n       = chip number                     *//* int irq     = IRQ level 0=OFF,1=ON            */#ifdef BUILD_OPN/* -------------------- YM2203/YM2608 Interface -------------------- *//*** 'n' : YM2203 chip number 'n'** 'r' : register** 'v' : value*///void OPNWriteReg(int n, int r, int v);/*** read status  YM2203 chip number 'n'*/unsigned char OPNReadStatus(int n);#endif /* BUILD_OPN */#if BUILD_YM2203/* -------------------- YM2203(OPN) Interface -------------------- *//*** Initialize YM2203 emulator(s).**** 'num'     is the number of virtual YM2203's to allocate** 'rate'    is sampling rate** return    0 = success*/int YM2203Init(int num, int baseclock, int rate,               FM_TIMERHANDLER TimerHandler,FM_IRQHANDLER IRQHandler);/*** shutdown the YM2203 emulators .. make sure that no sound system stuff** is touching our audio buffers ...*/void YM2203Shutdown(void);/*** reset all chip registers for YM2203 number 'num'*/void YM2203ResetChip(int num);void YM2203UpdateOne(int num, void *buffer, int length);/*** return : InterruptLevel*/int YM2203Write(int n,int a,int v);unsigned char YM2203Read(int n,int a);/***  Timer OverFlow*/int YM2203TimerOver(int n, int c);/*int YM2203SetBuffer(int n, FMSAMPLE *buf );*/#endif /* BUILD_YM2203 */#if BUILD_YM2612int YM2612Init(int num, int baseclock, int rate,               FM_TIMERHANDLER TimerHandler,FM_IRQHANDLER IRQHandler);void YM2612Shutdown(void);void YM2612ResetChip(int num);void YM2612UpdateOne(int num, void **buffer, int length);int YM2612Write(int n, int a,int v);unsigned char YM2612Read(int n,int a);int YM2612TimerOver(int n, int c );FMSAMPLE *YM2612Buffer(int n);/*int YM2612SetBuffer(int n, FMSAMPLE **buf );*/#endif /* BUILD_YM2612 */#endif /* _H_FM_FM_ */