scummvm/sound/fmopl.h

/* ScummVM - Scumm Interpreter
 * Copyright (C) 1999-2000 Tatsuyuki Satoh
 * Copyright (C) 2001-2003 The ScummVM project
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.

 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 * $Header$
 *
 * LGPL licensed version of MAMEs fmopl (V0.60a modified) by
 * Tatsuyuki Satoh and Jarek Burczynski. Included from LGPL'ed AdPlug.
 */

#ifndef __FMOPL_H_
#define __FMOPL_H_

#define HAS_YM3812	1

/* --- select emulation chips --- */
#ifdef _MSC_VER
// FIXME: how to fix it for VC6 ?
#define BUILD_YM3812 1
#else
#define BUILD_YM3812 defined(HAS_YM3812) && HAS_YM3812
#endif
#define BUILD_YM3526 defined(HAS_YM3526) && HAS_YM3526
#define BUILD_Y8950  defined(HAS_Y8950) && HAS_Y8950

/* select output bits size of output : 8 or 16 */
#define OPL_SAMPLE_BITS 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_SAMPLE_BITS==16)
typedef INT16 OPLSAMPLE;
#endif
#if (OPL_SAMPLE_BITS==8)
typedef INT8 OPLSAMPLE;
#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);


#if BUILD_YM3812

int  YM3812Init(int num, int clock, int rate);
void YM3812Shutdown(void);
void YM3812ResetChip(int which);
int  YM3812Write(int which, int a, int v);
unsigned char YM3812Read(int which, int a);
int  YM3812TimerOver(int which, int c);
void YM3812UpdateOne(int which, INT16 *buffer, int length);

void YM3812SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset);
void YM3812SetIRQHandler(int which, OPL_IRQHANDLER IRQHandler, int param);
void YM3812SetUpdateHandler(int which, OPL_UPDATEHANDLER UpdateHandler, int param);

#endif


#if BUILD_YM3526

/*
** Initialize YM3526 emulator(s).
**
** 'num' is the number of virtual YM3526's to allocate
** 'clock' is the chip clock in Hz
** 'rate' is sampling rate
*/
int  YM3526Init(int num, int clock, int rate);
/* shutdown the YM3526 emulators*/
void YM3526Shutdown(void);
void YM3526ResetChip(int which);
int  YM3526Write(int which, int a, int v);
unsigned char YM3526Read(int which, int a);
int  YM3526TimerOver(int which, int c);
/*
** Generate samples for one of the YM3526's
**
** 'which' is the virtual YM3526 number
** '*buffer' is the output buffer pointer
** 'length' is the number of samples that should be generated
*/
void YM3526UpdateOne(int which, INT16 *buffer, int length);

void YM3526SetTimerHandler(int which, OPL_TIMERHANDLER TimerHandler, int channelOffset);
void YM3526SetIRQHandler(int which, OPL_IRQHANDLER IRQHandler, int param);
void YM3526SetUpdateHandler(int which, OPL_UPDATEHANDLER UpdateHandler, int param);

#endif


#if BUILD_Y8950

#include "ymdeltat.h"

/* Y8950 port handlers */
void Y8950SetPortHandler(int which, OPL_PORTHANDLER_W PortHandler_w, OPL_PORTHANDLER_R PortHandler_r, int param);
void Y8950SetKeyboardHandler(int which, OPL_PORTHANDLER_W KeyboardHandler_w, OPL_PORTHANDLER_R KeyboardHandler_r, int param);
void Y8950SetDeltaTMemory(int which, void * deltat_rom, int deltat_rom_size );

int  Y8950Init (int num, int clock, int rate);
void Y8950Shutdown (void);
void Y8950ResetChip (int which);
int  Y8950Write (int which, int a, int v);
unsigned char Y8950Read (int which, int a);
int  Y8950TimerOver (int which, int c);
void Y8950UpdateOne (int which, INT16 *buffer, int length);

void Y8950SetTimerHandler (int which, OPL_TIMERHANDLER TimerHandler, int channelOffset);
void Y8950SetIRQHandler (int which, OPL_IRQHANDLER IRQHandler, int param);
void Y8950SetUpdateHandler (int which, OPL_UPDATEHANDLER UpdateHandler, int param);

#endif


#endif