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