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/*************************************************************************** 
 
  ym2610.h 
 
  Header file for software emulation for YAMAHA YM-2610 sound generator 
 
***************************************************************************/ 
 
#ifndef _YM2610_H_ 
#define _YM2610_H_ 
 
/* support OPN SSG type envelope mode */ 
#define FM_SEG_SUPPORT 0 
 
/* for busy flag emulation , function FM_GET_TIME_NOW() should be */ 
/* return the present time in second unit with (double) value     */ 
/* in timer.c */ 
#define FM_GET_TIME_NOW() timer_get_time() 
 
#define YM2610_NUMBUF 2  /* Left + Right */ 
 
typedef INT16  FMSAMPLE; 
typedef UINT32 FMSAMPLE_MIX; 
 
typedef void (*FM_TIMERHANDLER)(int channel, int count, double stepTime); 
typedef void (*FM_IRQHANDLER)(int irq); 
 
int  YM2610Init(int baseclock, int rate, 
				void *pcmroma, int pcmasize, 
				FM_TIMERHANDLER TimerHandler, 
				FM_IRQHANDLER IRQHandler); 
 
void  YM2610Reset(void); 
void  YM2610Update(INT16 **buffer, int length); 
int   YM2610Write(int addr, UINT8 value); 
UINT8 YM2610Read(int addr); 
int   YM2610TimerOver(int channel); 
 
#endif /* _YM2610_H_ */