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cog/Frameworks/GME/vgmplay/chips/262intf.c

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/***************************************************************************
262intf.c
MAME interface for YMF262 (OPL3) emulator
***************************************************************************/
#include "mamedef.h"
#include <stdlib.h>
//#include "attotime.h"
//#include "sndintrf.h"
//#include "streams.h"
#include "262intf.h"
#ifdef ENABLE_ALL_CORES
#include "ymf262.h"
#endif
#define OPLTYPE_IS_OPL3
#include "adlibemu.h"
#define EC_DBOPL 0x00 // DosBox OPL (AdLibEmu)
#ifdef ENABLE_ALL_CORES
#define EC_MAME 0x01 // YMF262 core from MAME
#endif
typedef struct _ymf262_state ymf262_state;
struct _ymf262_state
{
//sound_stream * stream;
//emu_timer * timer[2];
void * chip;
int EMU_CORE;
//const ymf262_interface *intf;
//const device_config *device;
};
/*INLINE ymf262_state *get_safe_token(const device_config *device)
{
assert(device != NULL);
assert(device->token != NULL);
assert(device->type == SOUND);
assert(sound_get_type(device) == SOUND_YMF262);
return (ymf262_state *)device->token;
}*/
#ifdef ENABLE_ALL_CORES
static void IRQHandler_262(void *param,int irq)
{
//ymf262_state *info = (ymf262_state *)param;
//if (info->intf->handler) (info->intf->handler)(info->device, irq);
}
#endif
/*static TIMER_CALLBACK( timer_callback_262_0 )
{
ymf262_state *info = (ymf262_state *)ptr;
ymf262_timer_over(info->chip, 0);
}
static TIMER_CALLBACK( timer_callback_262_1 )
{
ymf262_state *info = (ymf262_state *)ptr;
ymf262_timer_over(info->chip, 1);
}*/
//static void timer_handler_262(void *param,int timer, attotime period)
#ifdef ENABLE_ALL_CORES
static void timer_handler_262(void *param,int timer, int period)
{
//ymf262_state *info = (ymf262_state *)param;
if( period == 0 )
{ /* Reset FM Timer */
//timer_enable(info->timer[timer], 0);
}
else
{ /* Start FM Timer */
//timer_adjust_oneshot(info->timer[timer], period, 0);
}
}
#endif
//static STREAM_UPDATE( ymf262_stream_update )
void ymf262_stream_update(void *param, stream_sample_t **outputs, int samples)
{
ymf262_state *info = (ymf262_state *)param;
switch(info->EMU_CORE)
{
#ifdef ENABLE_ALL_CORES
case EC_MAME:
ymf262_update_one(info->chip, outputs, samples);
break;
#endif
case EC_DBOPL:
adlib_OPL3_getsample(info->chip, outputs, samples);
break;
}
}
static stream_sample_t* DUMMYBUF[0x02] = {NULL, NULL};
static void _stream_update(void *param/*, int interval*/)
{
ymf262_state *info = (ymf262_state *)param;
//stream_update(info->stream);
switch(info->EMU_CORE)
{
#ifdef ENABLE_ALL_CORES
case EC_MAME:
ymf262_update_one(info->chip, DUMMYBUF, 0);
break;
#endif
case EC_DBOPL:
adlib_OPL3_getsample(info->chip, DUMMYBUF, 0);
break;
}
}
//static DEVICE_START( ymf262 )
int device_start_ymf262(void **_info, int EMU_CORE, int clock, int CHIP_SAMPLING_MODE, int CHIP_SAMPLE_RATE)
{
//static const ymf262_interface dummy = { 0 };
//ymf262_state *info = get_safe_token(device);
ymf262_state *info;
int rate;
#ifdef ENABLE_ALL_CORES
if (EMU_CORE >= 0x02)
EMU_CORE = EC_DBOPL;
#else
EMU_CORE = EC_DBOPL;
#endif
info = (ymf262_state *) calloc(1, sizeof(ymf262_state));
*_info = (void *) info;
info->EMU_CORE = EMU_CORE;
rate = clock/288;
if ((CHIP_SAMPLING_MODE == 0x01 && rate < CHIP_SAMPLE_RATE) ||
CHIP_SAMPLING_MODE == 0x02)
rate = CHIP_SAMPLE_RATE;
//info->intf = device->static_config ? (const ymf262_interface *)device->static_config : &dummy;
//info->intf = &dummy;
//info->device = device;
/* stream system initialize */
switch(EMU_CORE)
{
#ifdef ENABLE_ALL_CORES
case EC_MAME:
info->chip = ymf262_init(clock,rate);
//assert_always(info->chip != NULL, "Error creating YMF262 chip");
//info->stream = stream_create(device,0,4,rate,info,ymf262_stream_update);
/* YMF262 setup */
ymf262_set_timer_handler (info->chip, timer_handler_262, info);
ymf262_set_irq_handler (info->chip, IRQHandler_262, info);
ymf262_set_update_handler(info->chip, _stream_update, info);
//info->timer[0] = timer_alloc(device->machine, timer_callback_262_0, info);
//info->timer[1] = timer_alloc(device->machine, timer_callback_262_1, info);
break;
#endif
case EC_DBOPL:
info->chip = adlib_OPL3_init(clock, rate, _stream_update, info);
break;
}
return rate;
}
//static DEVICE_STOP( ymf262 )
void device_stop_ymf262(void *_info)
{
//ymf262_state *info = get_safe_token(device);
ymf262_state *info = (ymf262_state *)_info;
switch(info->EMU_CORE)
{
#ifdef ENABLE_ALL_CORES
case EC_MAME:
ymf262_shutdown(info->chip);
break;
#endif
case EC_DBOPL:
adlib_OPL3_stop(info->chip);
break;
}
free(info);
}
/* reset */
//static DEVICE_RESET( ymf262 )
void device_reset_ymf262(void *_info)
{
//ymf262_state *info = get_safe_token(device);
ymf262_state *info = (ymf262_state *)_info;
switch(info->EMU_CORE)
{
#ifdef ENABLE_ALL_CORES
case EC_MAME:
ymf262_reset_chip(info->chip);
break;
#endif
case EC_DBOPL:
adlib_OPL3_reset(info->chip);
break;
}
}
//READ8_DEVICE_HANDLER( ymf262_r )
UINT8 ymf262_r(void *_info, offs_t offset)
{
//ymf262_state *info = get_safe_token(device);
ymf262_state *info = (ymf262_state *)_info;
switch(info->EMU_CORE)
{
#ifdef ENABLE_ALL_CORES
case EC_MAME:
return ymf262_read(info->chip, offset & 3);
#endif
case EC_DBOPL:
return adlib_OPL3_reg_read(info->chip, offset & 0x03);
default:
return 0x00;
}
}
//WRITE8_DEVICE_HANDLER( ymf262_w )
void ymf262_w(void *_info, offs_t offset, UINT8 data)
{
//ymf262_state *info = get_safe_token(device);
ymf262_state *info = (ymf262_state *)_info;
switch(info->EMU_CORE)
{
#ifdef ENABLE_ALL_CORES
case EC_MAME:
ymf262_write(info->chip, offset & 3, data);
break;
#endif
case EC_DBOPL:
adlib_OPL3_writeIO(info->chip, offset & 3, data);
break;
}
}
//READ8_DEVICE_HANDLER ( ymf262_status_r )
UINT8 ymf262_status_r(void *info, offs_t offset)
{
return ymf262_r(info, 0);
}
//WRITE8_DEVICE_HANDLER( ymf262_register_a_w )
void ymf262_register_a_w(void *info, offs_t offset, UINT8 data)
{
ymf262_w(info, 0, data);
}
//WRITE8_DEVICE_HANDLER( ymf262_register_b_w )
void ymf262_register_b_w(void *info, offs_t offset, UINT8 data)
{
ymf262_w(info, 2, data);
}
//WRITE8_DEVICE_HANDLER( ymf262_data_a_w )
void ymf262_data_a_w(void *info, offs_t offset, UINT8 data)
{
ymf262_w(info, 1, data);
}
//WRITE8_DEVICE_HANDLER( ymf262_data_b_w )
void ymf262_data_b_w(void *info, offs_t offset, UINT8 data)
{
ymf262_w(info, 3, data);
}
void ymf262_set_mute_mask(void *_info, UINT32 MuteMask)
{
ymf262_state *info = (ymf262_state *)_info;
switch(info->EMU_CORE)
{
#ifdef ENABLE_ALL_CORES
case EC_MAME:
ymf262_set_mutemask(info->chip, MuteMask);
break;
#endif
case EC_DBOPL:
adlib_OPL3_set_mute_mask(info->chip, MuteMask);
break;
}
return;
}
/**************************************************************************
* Generic get_info
**************************************************************************/
/*DEVICE_GET_INFO( ymf262 )
{
switch (state)
{
// --- the following bits of info are returned as 64-bit signed integers ---
case DEVINFO_INT_TOKEN_BYTES: info->i = sizeof(ymf262_state); break;
// --- the following bits of info are returned as pointers to data or functions ---
case DEVINFO_FCT_START: info->start = DEVICE_START_NAME( ymf262 ); break;
case DEVINFO_FCT_STOP: info->stop = DEVICE_STOP_NAME( ymf262 ); break;
case DEVINFO_FCT_RESET: info->reset = DEVICE_RESET_NAME( ymf262 ); break;
// --- the following bits of info are returned as NULL-terminated strings ---
case DEVINFO_STR_NAME: strcpy(info->s, "YMF262"); break;
case DEVINFO_STR_FAMILY: strcpy(info->s, "Yamaha FM"); break;
case DEVINFO_STR_VERSION: strcpy(info->s, "1.0"); break;
case DEVINFO_STR_SOURCE_FILE: strcpy(info->s, __FILE__); break;
case DEVINFO_STR_CREDITS: strcpy(info->s, "Copyright Nicola Salmoria and the MAME Team"); break;
}
}*/
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