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-rw-r--r--hw/fmopl.c1395
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diff --git a/hw/fmopl.c b/hw/fmopl.c
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--- a/hw/fmopl.c
+++ /dev/null
@@ -1,1395 +0,0 @@
-/*
-**
-** File: fmopl.c -- software implementation of FM sound generator
-**
-** Copyright (C) 1999,2000 Tatsuyuki Satoh , MultiArcadeMachineEmurator development
-**
-** Version 0.37a
-**
-*/
-
-/*
- preliminary :
- Problem :
- note:
-*/
-
-/* This version of fmopl.c is a fork of the MAME one, relicensed under the LGPL.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * This library 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
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>.
- */
-
-#define INLINE static inline
-#define HAS_YM3812 1
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-#include <math.h>
-//#include "driver.h" /* use M.A.M.E. */
-#include "hw/fmopl.h"
-
-#ifndef PI
-#define PI 3.14159265358979323846
-#endif
-
-#ifndef ARRAY_SIZE
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-#endif
-
-/* -------------------- for debug --------------------- */
-/* #define OPL_OUTPUT_LOG */
-#ifdef OPL_OUTPUT_LOG
-static FILE *opl_dbg_fp = NULL;
-static FM_OPL *opl_dbg_opl[16];
-static int opl_dbg_maxchip,opl_dbg_chip;
-#endif
-
-/* -------------------- preliminary define section --------------------- */
-/* attack/decay rate time rate */
-#define OPL_ARRATE 141280 /* RATE 4 = 2826.24ms @ 3.6MHz */
-#define OPL_DRRATE 1956000 /* RATE 4 = 39280.64ms @ 3.6MHz */
-
-#define DELTAT_MIXING_LEVEL (1) /* DELTA-T ADPCM MIXING LEVEL */
-
-#define FREQ_BITS 24 /* frequency turn */
-
-/* counter bits = 20 , octerve 7 */
-#define FREQ_RATE (1<<(FREQ_BITS-20))
-#define TL_BITS (FREQ_BITS+2)
-
-/* final output shift , limit minimum and maximum */
-#define OPL_OUTSB (TL_BITS+3-16) /* OPL output final shift 16bit */
-#define OPL_MAXOUT (0x7fff<<OPL_OUTSB)
-#define OPL_MINOUT (-0x8000<<OPL_OUTSB)
-
-/* -------------------- quality selection --------------------- */
-
-/* sinwave entries */
-/* used static memory = SIN_ENT * 4 (byte) */
-#define SIN_ENT 2048
-
-/* output level entries (envelope,sinwave) */
-/* envelope counter lower bits */
-#define ENV_BITS 16
-/* envelope output entries */
-#define EG_ENT 4096
-/* used dynamic memory = EG_ENT*4*4(byte)or EG_ENT*6*4(byte) */
-/* used static memory = EG_ENT*4 (byte) */
-
-#define EG_OFF ((2*EG_ENT)<<ENV_BITS) /* OFF */
-#define EG_DED EG_OFF
-#define EG_DST (EG_ENT<<ENV_BITS) /* DECAY START */
-#define EG_AED EG_DST
-#define EG_AST 0 /* ATTACK START */
-
-#define EG_STEP (96.0/EG_ENT) /* OPL is 0.1875 dB step */
-
-/* LFO table entries */
-#define VIB_ENT 512
-#define VIB_SHIFT (32-9)
-#define AMS_ENT 512
-#define AMS_SHIFT (32-9)
-
-#define VIB_RATE 256
-
-/* -------------------- local defines , macros --------------------- */
-
-/* register number to channel number , slot offset */
-#define SLOT1 0
-#define SLOT2 1
-
-/* envelope phase */
-#define ENV_MOD_RR 0x00
-#define ENV_MOD_DR 0x01
-#define ENV_MOD_AR 0x02
-
-/* -------------------- tables --------------------- */
-static const int slot_array[32]=
-{
- 0, 2, 4, 1, 3, 5,-1,-1,
- 6, 8,10, 7, 9,11,-1,-1,
- 12,14,16,13,15,17,-1,-1,
- -1,-1,-1,-1,-1,-1,-1,-1
-};
-
-/* key scale level */
-/* table is 3dB/OCT , DV converts this in TL step at 6dB/OCT */
-#define DV (EG_STEP/2)
-static const UINT32 KSL_TABLE[8*16]=
-{
- /* OCT 0 */
- 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV,
- 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV,
- 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV,
- 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV,
- /* OCT 1 */
- 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV,
- 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV,
- 0.000/DV, 0.750/DV, 1.125/DV, 1.500/DV,
- 1.875/DV, 2.250/DV, 2.625/DV, 3.000/DV,
- /* OCT 2 */
- 0.000/DV, 0.000/DV, 0.000/DV, 0.000/DV,
- 0.000/DV, 1.125/DV, 1.875/DV, 2.625/DV,
- 3.000/DV, 3.750/DV, 4.125/DV, 4.500/DV,
- 4.875/DV, 5.250/DV, 5.625/DV, 6.000/DV,
- /* OCT 3 */
- 0.000/DV, 0.000/DV, 0.000/DV, 1.875/DV,
- 3.000/DV, 4.125/DV, 4.875/DV, 5.625/DV,
- 6.000/DV, 6.750/DV, 7.125/DV, 7.500/DV,
- 7.875/DV, 8.250/DV, 8.625/DV, 9.000/DV,
- /* OCT 4 */
- 0.000/DV, 0.000/DV, 3.000/DV, 4.875/DV,
- 6.000/DV, 7.125/DV, 7.875/DV, 8.625/DV,
- 9.000/DV, 9.750/DV,10.125/DV,10.500/DV,
- 10.875/DV,11.250/DV,11.625/DV,12.000/DV,
- /* OCT 5 */
- 0.000/DV, 3.000/DV, 6.000/DV, 7.875/DV,
- 9.000/DV,10.125/DV,10.875/DV,11.625/DV,
- 12.000/DV,12.750/DV,13.125/DV,13.500/DV,
- 13.875/DV,14.250/DV,14.625/DV,15.000/DV,
- /* OCT 6 */
- 0.000/DV, 6.000/DV, 9.000/DV,10.875/DV,
- 12.000/DV,13.125/DV,13.875/DV,14.625/DV,
- 15.000/DV,15.750/DV,16.125/DV,16.500/DV,
- 16.875/DV,17.250/DV,17.625/DV,18.000/DV,
- /* OCT 7 */
- 0.000/DV, 9.000/DV,12.000/DV,13.875/DV,
- 15.000/DV,16.125/DV,16.875/DV,17.625/DV,
- 18.000/DV,18.750/DV,19.125/DV,19.500/DV,
- 19.875/DV,20.250/DV,20.625/DV,21.000/DV
-};
-#undef DV
-
-/* sustain lebel table (3db per step) */
-/* 0 - 15: 0, 3, 6, 9,12,15,18,21,24,27,30,33,36,39,42,93 (dB)*/
-#define SC(db) (db*((3/EG_STEP)*(1<<ENV_BITS)))+EG_DST
-static const INT32 SL_TABLE[16]={
- SC( 0),SC( 1),SC( 2),SC(3 ),SC(4 ),SC(5 ),SC(6 ),SC( 7),
- SC( 8),SC( 9),SC(10),SC(11),SC(12),SC(13),SC(14),SC(31)
-};
-#undef SC
-
-#define TL_MAX (EG_ENT*2) /* limit(tl + ksr + envelope) + sinwave */
-/* TotalLevel : 48 24 12 6 3 1.5 0.75 (dB) */
-/* TL_TABLE[ 0 to TL_MAX ] : plus section */
-/* TL_TABLE[ TL_MAX to TL_MAX+TL_MAX-1 ] : minus section */
-static INT32 *TL_TABLE;
-
-/* pointers to TL_TABLE with sinwave output offset */
-static INT32 **SIN_TABLE;
-
-/* LFO table */
-static INT32 *AMS_TABLE;
-static INT32 *VIB_TABLE;
-
-/* envelope output curve table */
-/* attack + decay + OFF */
-static INT32 ENV_CURVE[2*EG_ENT+1];
-
-/* multiple table */
-#define ML 2
-static const UINT32 MUL_TABLE[16]= {
-/* 1/2, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15 */
- 0.50*ML, 1.00*ML, 2.00*ML, 3.00*ML, 4.00*ML, 5.00*ML, 6.00*ML, 7.00*ML,
- 8.00*ML, 9.00*ML,10.00*ML,10.00*ML,12.00*ML,12.00*ML,15.00*ML,15.00*ML
-};
-#undef ML
-
-/* dummy attack / decay rate ( when rate == 0 ) */
-static INT32 RATE_0[16]=
-{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
-
-/* -------------------- static state --------------------- */
-
-/* lock level of common table */
-static int num_lock = 0;
-
-/* work table */
-static void *cur_chip = NULL; /* current chip point */
-/* currenct chip state */
-/* static OPLSAMPLE *bufL,*bufR; */
-static OPL_CH *S_CH;
-static OPL_CH *E_CH;
-OPL_SLOT *SLOT7_1,*SLOT7_2,*SLOT8_1,*SLOT8_2;
-
-static INT32 outd[1];
-static INT32 ams;
-static INT32 vib;
-INT32 *ams_table;
-INT32 *vib_table;
-static INT32 amsIncr;
-static INT32 vibIncr;
-static INT32 feedback2; /* connect for SLOT 2 */
-
-/* log output level */
-#define LOG_ERR 3 /* ERROR */
-#define LOG_WAR 2 /* WARNING */
-#define LOG_INF 1 /* INFORMATION */
-
-//#define LOG_LEVEL LOG_INF
-#define LOG_LEVEL LOG_ERR
-
-//#define LOG(n,x) if( (n)>=LOG_LEVEL ) logerror x
-#define LOG(n,x)
-
-/* --------------------- subroutines --------------------- */
-
-INLINE int Limit( int val, int max, int min ) {
- if ( val > max )
- val = max;
- else if ( val < min )
- val = min;
-
- return val;
-}
-
-/* status set and IRQ handling */
-INLINE void OPL_STATUS_SET(FM_OPL *OPL,int flag)
-{
- /* set status flag */
- OPL->status |= flag;
- if(!(OPL->status & 0x80))
- {
- if(OPL->status & OPL->statusmask)
- { /* IRQ on */
- OPL->status |= 0x80;
- /* callback user interrupt handler (IRQ is OFF to ON) */
- if(OPL->IRQHandler) (OPL->IRQHandler)(OPL->IRQParam,1);
- }
- }
-}
-
-/* status reset and IRQ handling */
-INLINE void OPL_STATUS_RESET(FM_OPL *OPL,int flag)
-{
- /* reset status flag */
- OPL->status &=~flag;
- if((OPL->status & 0x80))
- {
- if (!(OPL->status & OPL->statusmask) )
- {
- OPL->status &= 0x7f;
- /* callback user interrupt handler (IRQ is ON to OFF) */
- if(OPL->IRQHandler) (OPL->IRQHandler)(OPL->IRQParam,0);
- }
- }
-}
-
-/* IRQ mask set */
-INLINE void OPL_STATUSMASK_SET(FM_OPL *OPL,int flag)
-{
- OPL->statusmask = flag;
- /* IRQ handling check */
- OPL_STATUS_SET(OPL,0);
- OPL_STATUS_RESET(OPL,0);
-}
-
-/* ----- key on ----- */
-INLINE void OPL_KEYON(OPL_SLOT *SLOT)
-{
- /* sin wave restart */
- SLOT->Cnt = 0;
- /* set attack */
- SLOT->evm = ENV_MOD_AR;
- SLOT->evs = SLOT->evsa;
- SLOT->evc = EG_AST;
- SLOT->eve = EG_AED;
-}
-/* ----- key off ----- */
-INLINE void OPL_KEYOFF(OPL_SLOT *SLOT)
-{
- if( SLOT->evm > ENV_MOD_RR)
- {
- /* set envelope counter from envleope output */
- SLOT->evm = ENV_MOD_RR;
- if( !(SLOT->evc&EG_DST) )
- //SLOT->evc = (ENV_CURVE[SLOT->evc>>ENV_BITS]<<ENV_BITS) + EG_DST;
- SLOT->evc = EG_DST;
- SLOT->eve = EG_DED;
- SLOT->evs = SLOT->evsr;
- }
-}
-
-/* ---------- calcrate Envelope Generator & Phase Generator ---------- */
-/* return : envelope output */
-INLINE UINT32 OPL_CALC_SLOT( OPL_SLOT *SLOT )
-{
- /* calcrate envelope generator */
- if( (SLOT->evc+=SLOT->evs) >= SLOT->eve )
- {
- switch( SLOT->evm ){
- case ENV_MOD_AR: /* ATTACK -> DECAY1 */
- /* next DR */
- SLOT->evm = ENV_MOD_DR;
- SLOT->evc = EG_DST;
- SLOT->eve = SLOT->SL;
- SLOT->evs = SLOT->evsd;
- break;
- case ENV_MOD_DR: /* DECAY -> SL or RR */
- SLOT->evc = SLOT->SL;
- SLOT->eve = EG_DED;
- if(SLOT->eg_typ)
- {
- SLOT->evs = 0;
- }
- else
- {
- SLOT->evm = ENV_MOD_RR;
- SLOT->evs = SLOT->evsr;
- }
- break;
- case ENV_MOD_RR: /* RR -> OFF */
- SLOT->evc = EG_OFF;
- SLOT->eve = EG_OFF+1;
- SLOT->evs = 0;
- break;
- }
- }
- /* calcrate envelope */
- return SLOT->TLL+ENV_CURVE[SLOT->evc>>ENV_BITS]+(SLOT->ams ? ams : 0);
-}
-
-/* set algorithm connection */
-static void set_algorithm( OPL_CH *CH)
-{
- INT32 *carrier = &outd[0];
- CH->connect1 = CH->CON ? carrier : &feedback2;
- CH->connect2 = carrier;
-}
-
-/* ---------- frequency counter for operater update ---------- */
-INLINE void CALC_FCSLOT(OPL_CH *CH,OPL_SLOT *SLOT)
-{
- int ksr;
-
- /* frequency step counter */
- SLOT->Incr = CH->fc * SLOT->mul;
- ksr = CH->kcode >> SLOT->KSR;
-
- if( SLOT->ksr != ksr )
- {
- SLOT->ksr = ksr;
- /* attack , decay rate recalcration */
- SLOT->evsa = SLOT->AR[ksr];
- SLOT->evsd = SLOT->DR[ksr];
- SLOT->evsr = SLOT->RR[ksr];
- }
- SLOT->TLL = SLOT->TL + (CH->ksl_base>>SLOT->ksl);
-}
-
-/* set multi,am,vib,EG-TYP,KSR,mul */
-INLINE void set_mul(FM_OPL *OPL,int slot,int v)
-{
- OPL_CH *CH = &OPL->P_CH[slot/2];
- OPL_SLOT *SLOT = &CH->SLOT[slot&1];
-
- SLOT->mul = MUL_TABLE[v&0x0f];
- SLOT->KSR = (v&0x10) ? 0 : 2;
- SLOT->eg_typ = (v&0x20)>>5;
- SLOT->vib = (v&0x40);
- SLOT->ams = (v&0x80);
- CALC_FCSLOT(CH,SLOT);
-}
-
-/* set ksl & tl */
-INLINE void set_ksl_tl(FM_OPL *OPL,int slot,int v)
-{
- OPL_CH *CH = &OPL->P_CH[slot/2];
- OPL_SLOT *SLOT = &CH->SLOT[slot&1];
- int ksl = v>>6; /* 0 / 1.5 / 3 / 6 db/OCT */
-
- SLOT->ksl = ksl ? 3-ksl : 31;
- SLOT->TL = (v&0x3f)*(0.75/EG_STEP); /* 0.75db step */
-
- if( !(OPL->mode&0x80) )
- { /* not CSM latch total level */
- SLOT->TLL = SLOT->TL + (CH->ksl_base>>SLOT->ksl);
- }
-}
-
-/* set attack rate & decay rate */
-INLINE void set_ar_dr(FM_OPL *OPL,int slot,int v)
-{
- OPL_CH *CH = &OPL->P_CH[slot/2];
- OPL_SLOT *SLOT = &CH->SLOT[slot&1];
- int ar = v>>4;
- int dr = v&0x0f;
-
- SLOT->AR = ar ? &OPL->AR_TABLE[ar<<2] : RATE_0;
- SLOT->evsa = SLOT->AR[SLOT->ksr];
- if( SLOT->evm == ENV_MOD_AR ) SLOT->evs = SLOT->evsa;
-
- SLOT->DR = dr ? &OPL->DR_TABLE[dr<<2] : RATE_0;
- SLOT->evsd = SLOT->DR[SLOT->ksr];
- if( SLOT->evm == ENV_MOD_DR ) SLOT->evs = SLOT->evsd;
-}
-
-/* set sustain level & release rate */
-INLINE void set_sl_rr(FM_OPL *OPL,int slot,int v)
-{
- OPL_CH *CH = &OPL->P_CH[slot/2];
- OPL_SLOT *SLOT = &CH->SLOT[slot&1];
- int sl = v>>4;
- int rr = v & 0x0f;
-
- SLOT->SL = SL_TABLE[sl];
- if( SLOT->evm == ENV_MOD_DR ) SLOT->eve = SLOT->SL;
- SLOT->RR = &OPL->DR_TABLE[rr<<2];
- SLOT->evsr = SLOT->RR[SLOT->ksr];
- if( SLOT->evm == ENV_MOD_RR ) SLOT->evs = SLOT->evsr;
-}
-
-/* operator output calcrator */
-#define OP_OUT(slot,env,con) slot->wavetable[((slot->Cnt+con)/(0x1000000/SIN_ENT))&(SIN_ENT-1)][env]
-/* ---------- calcrate one of channel ---------- */
-INLINE void OPL_CALC_CH( OPL_CH *CH )
-{
- UINT32 env_out;
- OPL_SLOT *SLOT;
-
- feedback2 = 0;
- /* SLOT 1 */
- SLOT = &CH->SLOT[SLOT1];
- env_out=OPL_CALC_SLOT(SLOT);
- if( env_out < EG_ENT-1 )
- {
- /* PG */
- if(SLOT->vib) SLOT->Cnt += (SLOT->Incr*vib/VIB_RATE);
- else SLOT->Cnt += SLOT->Incr;
- /* connectoion */
- if(CH->FB)
- {
- int feedback1 = (CH->op1_out[0]+CH->op1_out[1])>>CH->FB;
- CH->op1_out[1] = CH->op1_out[0];
- *CH->connect1 += CH->op1_out[0] = OP_OUT(SLOT,env_out,feedback1);
- }
- else
- {
- *CH->connect1 += OP_OUT(SLOT,env_out,0);
- }
- }else
- {
- CH->op1_out[1] = CH->op1_out[0];
- CH->op1_out[0] = 0;
- }
- /* SLOT 2 */
- SLOT = &CH->SLOT[SLOT2];
- env_out=OPL_CALC_SLOT(SLOT);
- if( env_out < EG_ENT-1 )
- {
- /* PG */
- if(SLOT->vib) SLOT->Cnt += (SLOT->Incr*vib/VIB_RATE);
- else SLOT->Cnt += SLOT->Incr;
- /* connectoion */
- outd[0] += OP_OUT(SLOT,env_out, feedback2);
- }
-}
-
-/* ---------- calcrate rhythm block ---------- */
-#define WHITE_NOISE_db 6.0
-INLINE void OPL_CALC_RH( OPL_CH *CH )
-{
- UINT32 env_tam,env_sd,env_top,env_hh;
- int whitenoise = (rand()&1)*(WHITE_NOISE_db/EG_STEP);
- INT32 tone8;
-
- OPL_SLOT *SLOT;
- int env_out;
-
- /* BD : same as FM serial mode and output level is large */
- feedback2 = 0;
- /* SLOT 1 */
- SLOT = &CH[6].SLOT[SLOT1];
- env_out=OPL_CALC_SLOT(SLOT);
- if( env_out < EG_ENT-1 )
- {
- /* PG */
- if(SLOT->vib) SLOT->Cnt += (SLOT->Incr*vib/VIB_RATE);
- else SLOT->Cnt += SLOT->Incr;
- /* connectoion */
- if(CH[6].FB)
- {
- int feedback1 = (CH[6].op1_out[0]+CH[6].op1_out[1])>>CH[6].FB;
- CH[6].op1_out[1] = CH[6].op1_out[0];
- feedback2 = CH[6].op1_out[0] = OP_OUT(SLOT,env_out,feedback1);
- }
- else
- {
- feedback2 = OP_OUT(SLOT,env_out,0);
- }
- }else
- {
- feedback2 = 0;
- CH[6].op1_out[1] = CH[6].op1_out[0];
- CH[6].op1_out[0] = 0;
- }
- /* SLOT 2 */
- SLOT = &CH[6].SLOT[SLOT2];
- env_out=OPL_CALC_SLOT(SLOT);
- if( env_out < EG_ENT-1 )
- {
- /* PG */
- if(SLOT->vib) SLOT->Cnt += (SLOT->Incr*vib/VIB_RATE);
- else SLOT->Cnt += SLOT->Incr;
- /* connectoion */
- outd[0] += OP_OUT(SLOT,env_out, feedback2)*2;
- }
-
- // SD (17) = mul14[fnum7] + white noise
- // TAM (15) = mul15[fnum8]
- // TOP (18) = fnum6(mul18[fnum8]+whitenoise)
- // HH (14) = fnum7(mul18[fnum8]+whitenoise) + white noise
- env_sd =OPL_CALC_SLOT(SLOT7_2) + whitenoise;
- env_tam=OPL_CALC_SLOT(SLOT8_1);
- env_top=OPL_CALC_SLOT(SLOT8_2);
- env_hh =OPL_CALC_SLOT(SLOT7_1) + whitenoise;
-
- /* PG */
- if(SLOT7_1->vib) SLOT7_1->Cnt += (2*SLOT7_1->Incr*vib/VIB_RATE);
- else SLOT7_1->Cnt += 2*SLOT7_1->Incr;
- if(SLOT7_2->vib) SLOT7_2->Cnt += ((CH[7].fc*8)*vib/VIB_RATE);
- else SLOT7_2->Cnt += (CH[7].fc*8);
- if(SLOT8_1->vib) SLOT8_1->Cnt += (SLOT8_1->Incr*vib/VIB_RATE);
- else SLOT8_1->Cnt += SLOT8_1->Incr;
- if(SLOT8_2->vib) SLOT8_2->Cnt += ((CH[8].fc*48)*vib/VIB_RATE);
- else SLOT8_2->Cnt += (CH[8].fc*48);
-
- tone8 = OP_OUT(SLOT8_2,whitenoise,0 );
-
- /* SD */
- if( env_sd < EG_ENT-1 )
- outd[0] += OP_OUT(SLOT7_1,env_sd, 0)*8;
- /* TAM */
- if( env_tam < EG_ENT-1 )
- outd[0] += OP_OUT(SLOT8_1,env_tam, 0)*2;
- /* TOP-CY */
- if( env_top < EG_ENT-1 )
- outd[0] += OP_OUT(SLOT7_2,env_top,tone8)*2;
- /* HH */
- if( env_hh < EG_ENT-1 )
- outd[0] += OP_OUT(SLOT7_2,env_hh,tone8)*2;
-}
-
-/* ----------- initialize time tabls ----------- */
-static void init_timetables( FM_OPL *OPL , int ARRATE , int DRRATE )
-{
- int i;
- double rate;
-
- /* make attack rate & decay rate tables */
- for (i = 0;i < 4;i++) OPL->AR_TABLE[i] = OPL->DR_TABLE[i] = 0;
- for (i = 4;i <= 60;i++){
- rate = OPL->freqbase; /* frequency rate */
- if( i < 60 ) rate *= 1.0+(i&3)*0.25; /* b0-1 : x1 , x1.25 , x1.5 , x1.75 */
- rate *= 1<<((i>>2)-1); /* b2-5 : shift bit */
- rate *= (double)(EG_ENT<<ENV_BITS);
- OPL->AR_TABLE[i] = rate / ARRATE;
- OPL->DR_TABLE[i] = rate / DRRATE;
- }
- for (i = 60; i < ARRAY_SIZE(OPL->AR_TABLE); i++)
- {
- OPL->AR_TABLE[i] = EG_AED-1;
- OPL->DR_TABLE[i] = OPL->DR_TABLE[60];
- }
-#if 0
- for (i = 0;i < 64 ;i++){ /* make for overflow area */
- LOG(LOG_WAR, ("rate %2d , ar %f ms , dr %f ms\n", i,
- ((double)(EG_ENT<<ENV_BITS) / OPL->AR_TABLE[i]) * (1000.0 / OPL->rate),
- ((double)(EG_ENT<<ENV_BITS) / OPL->DR_TABLE[i]) * (1000.0 / OPL->rate) ));
- }
-#endif
-}
-
-/* ---------- generic table initialize ---------- */
-static int OPLOpenTable( void )
-{
- int s,t;
- double rate;
- int i,j;
- double pom;
-
- /* allocate dynamic tables */
- if( (TL_TABLE = malloc(TL_MAX*2*sizeof(INT32))) == NULL)
- return 0;
- if( (SIN_TABLE = malloc(SIN_ENT*4 *sizeof(INT32 *))) == NULL)
- {
- free(TL_TABLE);
- return 0;
- }
- if( (AMS_TABLE = malloc(AMS_ENT*2 *sizeof(INT32))) == NULL)
- {
- free(TL_TABLE);
- free(SIN_TABLE);
- return 0;
- }
- if( (VIB_TABLE = malloc(VIB_ENT*2 *sizeof(INT32))) == NULL)
- {
- free(TL_TABLE);
- free(SIN_TABLE);
- free(AMS_TABLE);
- return 0;
- }
- /* make total level table */
- for (t = 0;t < EG_ENT-1 ;t++){
- rate = ((1<<TL_BITS)-1)/pow(10,EG_STEP*t/20); /* dB -> voltage */
- TL_TABLE[ t] = (int)rate;
- TL_TABLE[TL_MAX+t] = -TL_TABLE[t];
-/* LOG(LOG_INF,("TotalLevel(%3d) = %x\n",t,TL_TABLE[t]));*/
- }
- /* fill volume off area */
- for ( t = EG_ENT-1; t < TL_MAX ;t++){
- TL_TABLE[t] = TL_TABLE[TL_MAX+t] = 0;
- }
-
- /* make sinwave table (total level offet) */
- /* degree 0 = degree 180 = off */
- SIN_TABLE[0] = SIN_TABLE[SIN_ENT/2] = &TL_TABLE[EG_ENT-1];
- for (s = 1;s <= SIN_ENT/4;s++){
- pom = sin(2*PI*s/SIN_ENT); /* sin */
- pom = 20*log10(1/pom); /* decibel */
- j = pom / EG_STEP; /* TL_TABLE steps */
-
- /* degree 0 - 90 , degree 180 - 90 : plus section */
- SIN_TABLE[ s] = SIN_TABLE[SIN_ENT/2-s] = &TL_TABLE[j];
- /* degree 180 - 270 , degree 360 - 270 : minus section */
- SIN_TABLE[SIN_ENT/2+s] = SIN_TABLE[SIN_ENT -s] = &TL_TABLE[TL_MAX+j];
-/* LOG(LOG_INF,("sin(%3d) = %f:%f db\n",s,pom,(double)j * EG_STEP));*/
- }
- for (s = 0;s < SIN_ENT;s++)
- {
- SIN_TABLE[SIN_ENT*1+s] = s<(SIN_ENT/2) ? SIN_TABLE[s] : &TL_TABLE[EG_ENT];
- SIN_TABLE[SIN_ENT*2+s] = SIN_TABLE[s % (SIN_ENT/2)];
- SIN_TABLE[SIN_ENT*3+s] = (s/(SIN_ENT/4))&1 ? &TL_TABLE[EG_ENT] : SIN_TABLE[SIN_ENT*2+s];
- }
-
- /* envelope counter -> envelope output table */
- for (i=0; i<EG_ENT; i++)
- {
- /* ATTACK curve */
- pom = pow( ((double)(EG_ENT-1-i)/EG_ENT) , 8 ) * EG_ENT;
- /* if( pom >= EG_ENT ) pom = EG_ENT-1; */
- ENV_CURVE[i] = (int)pom;
- /* DECAY ,RELEASE curve */
- ENV_CURVE[(EG_DST>>ENV_BITS)+i]= i;
- }
- /* off */
- ENV_CURVE[EG_OFF>>ENV_BITS]= EG_ENT-1;
- /* make LFO ams table */
- for (i=0; i<AMS_ENT; i++)
- {
- pom = (1.0+sin(2*PI*i/AMS_ENT))/2; /* sin */
- AMS_TABLE[i] = (1.0/EG_STEP)*pom; /* 1dB */
- AMS_TABLE[AMS_ENT+i] = (4.8/EG_STEP)*pom; /* 4.8dB */
- }
- /* make LFO vibrate table */
- for (i=0; i<VIB_ENT; i++)
- {
- /* 100cent = 1seminote = 6% ?? */
- pom = (double)VIB_RATE*0.06*sin(2*PI*i/VIB_ENT); /* +-100sect step */
- VIB_TABLE[i] = VIB_RATE + (pom*0.07); /* +- 7cent */
- VIB_TABLE[VIB_ENT+i] = VIB_RATE + (pom*0.14); /* +-14cent */
- /* LOG(LOG_INF,("vib %d=%d\n",i,VIB_TABLE[VIB_ENT+i])); */
- }
- return 1;
-}
-
-
-static void OPLCloseTable( void )
-{
- free(TL_TABLE);
- free(SIN_TABLE);
- free(AMS_TABLE);
- free(VIB_TABLE);
-}
-
-/* CSM Key Control */
-INLINE void CSMKeyControll(OPL_CH *CH)
-{
- OPL_SLOT *slot1 = &CH->SLOT[SLOT1];
- OPL_SLOT *slot2 = &CH->SLOT[SLOT2];
- /* all key off */
- OPL_KEYOFF(slot1);
- OPL_KEYOFF(slot2);
- /* total level latch */
- slot1->TLL = slot1->TL + (CH->ksl_base>>slot1->ksl);
- slot1->TLL = slot1->TL + (CH->ksl_base>>slot1->ksl);
- /* key on */
- CH->op1_out[0] = CH->op1_out[1] = 0;
- OPL_KEYON(slot1);
- OPL_KEYON(slot2);
-}
-
-/* ---------- opl initialize ---------- */
-static void OPL_initialize(FM_OPL *OPL)
-{
- int fn;
-
- /* frequency base */
- OPL->freqbase = (OPL->rate) ? ((double)OPL->clock / OPL->rate) / 72 : 0;
- /* Timer base time */
- OPL->TimerBase = 1.0/((double)OPL->clock / 72.0 );
- /* make time tables */
- init_timetables( OPL , OPL_ARRATE , OPL_DRRATE );
- /* make fnumber -> increment counter table */
- for( fn=0 ; fn < 1024 ; fn++ )
- {
- OPL->FN_TABLE[fn] = OPL->freqbase * fn * FREQ_RATE * (1<<7) / 2;
- }
- /* LFO freq.table */
- OPL->amsIncr = OPL->rate ? (double)AMS_ENT*(1<<AMS_SHIFT) / OPL->rate * 3.7 * ((double)OPL->clock/3600000) : 0;
- OPL->vibIncr = OPL->rate ? (double)VIB_ENT*(1<<VIB_SHIFT) / OPL->rate * 6.4 * ((double)OPL->clock/3600000) : 0;
-}
-
-/* ---------- write a OPL registers ---------- */
-static void OPLWriteReg(FM_OPL *OPL, int r, int v)
-{
- OPL_CH *CH;
- int slot;
- int block_fnum;
-
- switch(r&0xe0)
- {
- case 0x00: /* 00-1f:control */
- switch(r&0x1f)
- {
- case 0x01:
- /* wave selector enable */
- if(OPL->type&OPL_TYPE_WAVESEL)
- {
- OPL->wavesel = v&0x20;
- if(!OPL->wavesel)
- {
- /* preset compatible mode */
- int c;
- for(c=0;c<OPL->max_ch;c++)
- {
- OPL->P_CH[c].SLOT[SLOT1].wavetable = &SIN_TABLE[0];
- OPL->P_CH[c].SLOT[SLOT2].wavetable = &SIN_TABLE[0];
- }
- }
- }
- return;
- case 0x02: /* Timer 1 */
- OPL->T[0] = (256-v)*4;
- break;
- case 0x03: /* Timer 2 */
- OPL->T[1] = (256-v)*16;
- return;
- case 0x04: /* IRQ clear / mask and Timer enable */
- if(v&0x80)
- { /* IRQ flag clear */
- OPL_STATUS_RESET(OPL,0x7f);
- }
- else
- { /* set IRQ mask ,timer enable*/
- UINT8 st1 = v&1;
- UINT8 st2 = (v>>1)&1;
- /* IRQRST,T1MSK,t2MSK,EOSMSK,BRMSK,x,ST2,ST1 */
- OPL_STATUS_RESET(OPL,v&0x78);
- OPL_STATUSMASK_SET(OPL,((~v)&0x78)|0x01);
- /* timer 2 */
- if(OPL->st[1] != st2)
- {
- double interval = st2 ? (double)OPL->T[1]*OPL->TimerBase : 0.0;
- OPL->st[1] = st2;
- if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+1,interval);
- }
- /* timer 1 */
- if(OPL->st[0] != st1)
- {
- double interval = st1 ? (double)OPL->T[0]*OPL->TimerBase : 0.0;
- OPL->st[0] = st1;
- if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+0,interval);
- }
- }
- return;
-#if BUILD_Y8950
- case 0x06: /* Key Board OUT */
- if(OPL->type&OPL_TYPE_KEYBOARD)
- {
- if(OPL->keyboardhandler_w)
- OPL->keyboardhandler_w(OPL->keyboard_param,v);
- else
- LOG(LOG_WAR,("OPL:write unmapped KEYBOARD port\n"));
- }
- return;
- case 0x07: /* DELTA-T control : START,REC,MEMDATA,REPT,SPOFF,x,x,RST */
- if(OPL->type&OPL_TYPE_ADPCM)
- YM_DELTAT_ADPCM_Write(OPL->deltat,r-0x07,v);
- return;
- case 0x08: /* MODE,DELTA-T : CSM,NOTESEL,x,x,smpl,da/ad,64k,rom */
- OPL->mode = v;
- v&=0x1f; /* for DELTA-T unit */
- case 0x09: /* START ADD */
- case 0x0a:
- case 0x0b: /* STOP ADD */
- case 0x0c:
- case 0x0d: /* PRESCALE */
- case 0x0e:
- case 0x0f: /* ADPCM data */
- case 0x10: /* DELTA-N */
- case 0x11: /* DELTA-N */
- case 0x12: /* EG-CTRL */
- if(OPL->type&OPL_TYPE_ADPCM)
- YM_DELTAT_ADPCM_Write(OPL->deltat,r-0x07,v);
- return;
-#if 0
- case 0x15: /* DAC data */
- case 0x16:
- case 0x17: /* SHIFT */
- return;
- case 0x18: /* I/O CTRL (Direction) */
- if(OPL->type&OPL_TYPE_IO)
- OPL->portDirection = v&0x0f;
- return;
- case 0x19: /* I/O DATA */
- if(OPL->type&OPL_TYPE_IO)
- {
- OPL->portLatch = v;
- if(OPL->porthandler_w)
- OPL->porthandler_w(OPL->port_param,v&OPL->portDirection);
- }
- return;
- case 0x1a: /* PCM data */
- return;
-#endif
-#endif
- }
- break;
- case 0x20: /* am,vib,ksr,eg type,mul */
- slot = slot_array[r&0x1f];
- if(slot == -1) return;
- set_mul(OPL,slot,v);
- return;
- case 0x40:
- slot = slot_array[r&0x1f];
- if(slot == -1) return;
- set_ksl_tl(OPL,slot,v);
- return;
- case 0x60:
- slot = slot_array[r&0x1f];
- if(slot == -1) return;
- set_ar_dr(OPL,slot,v);
- return;
- case 0x80:
- slot = slot_array[r&0x1f];
- if(slot == -1) return;
- set_sl_rr(OPL,slot,v);
- return;
- case 0xa0:
- switch(r)
- {
- case 0xbd:
- /* amsep,vibdep,r,bd,sd,tom,tc,hh */
- {
- UINT8 rkey = OPL->rhythm^v;
- OPL->ams_table = &AMS_TABLE[v&0x80 ? AMS_ENT : 0];
- OPL->vib_table = &VIB_TABLE[v&0x40 ? VIB_ENT : 0];
- OPL->rhythm = v&0x3f;
- if(OPL->rhythm&0x20)
- {
-#if 0
- usrintf_showmessage("OPL Rhythm mode select");
-#endif
- /* BD key on/off */
- if(rkey&0x10)
- {
- if(v&0x10)
- {
- OPL->P_CH[6].op1_out[0] = OPL->P_CH[6].op1_out[1] = 0;
- OPL_KEYON(&OPL->P_CH[6].SLOT[SLOT1]);
- OPL_KEYON(&OPL->P_CH[6].SLOT[SLOT2]);
- }
- else
- {
- OPL_KEYOFF(&OPL->P_CH[6].SLOT[SLOT1]);
- OPL_KEYOFF(&OPL->P_CH[6].SLOT[SLOT2]);
- }
- }
- /* SD key on/off */
- if(rkey&0x08)
- {
- if(v&0x08) OPL_KEYON(&OPL->P_CH[7].SLOT[SLOT2]);
- else OPL_KEYOFF(&OPL->P_CH[7].SLOT[SLOT2]);
- }/* TAM key on/off */
- if(rkey&0x04)
- {
- if(v&0x04) OPL_KEYON(&OPL->P_CH[8].SLOT[SLOT1]);
- else OPL_KEYOFF(&OPL->P_CH[8].SLOT[SLOT1]);
- }
- /* TOP-CY key on/off */
- if(rkey&0x02)
- {
- if(v&0x02) OPL_KEYON(&OPL->P_CH[8].SLOT[SLOT2]);
- else OPL_KEYOFF(&OPL->P_CH[8].SLOT[SLOT2]);
- }
- /* HH key on/off */
- if(rkey&0x01)
- {
- if(v&0x01) OPL_KEYON(&OPL->P_CH[7].SLOT[SLOT1]);
- else OPL_KEYOFF(&OPL->P_CH[7].SLOT[SLOT1]);
- }
- }
- }
- return;
- }
- /* keyon,block,fnum */
- if( (r&0x0f) > 8) return;
- CH = &OPL->P_CH[r&0x0f];
- if(!(r&0x10))
- { /* a0-a8 */
- block_fnum = (CH->block_fnum&0x1f00) | v;
- }
- else
- { /* b0-b8 */
- int keyon = (v>>5)&1;
- block_fnum = ((v&0x1f)<<8) | (CH->block_fnum&0xff);
- if(CH->keyon != keyon)
- {
- if( (CH->keyon=keyon) )
- {
- CH->op1_out[0] = CH->op1_out[1] = 0;
- OPL_KEYON(&CH->SLOT[SLOT1]);
- OPL_KEYON(&CH->SLOT[SLOT2]);
- }
- else
- {
- OPL_KEYOFF(&CH->SLOT[SLOT1]);
- OPL_KEYOFF(&CH->SLOT[SLOT2]);
- }
- }
- }
- /* update */
- if(CH->block_fnum != block_fnum)
- {
- int blockRv = 7-(block_fnum>>10);
- int fnum = block_fnum&0x3ff;
- CH->block_fnum = block_fnum;
-
- CH->ksl_base = KSL_TABLE[block_fnum>>6];
- CH->fc = OPL->FN_TABLE[fnum]>>blockRv;
- CH->kcode = CH->block_fnum>>9;
- if( (OPL->mode&0x40) && CH->block_fnum&0x100) CH->kcode |=1;
- CALC_FCSLOT(CH,&CH->SLOT[SLOT1]);
- CALC_FCSLOT(CH,&CH->SLOT[SLOT2]);
- }
- return;
- case 0xc0:
- /* FB,C */
- if( (r&0x0f) > 8) return;
- CH = &OPL->P_CH[r&0x0f];
- {
- int feedback = (v>>1)&7;
- CH->FB = feedback ? (8+1) - feedback : 0;
- CH->CON = v&1;
- set_algorithm(CH);
- }
- return;
- case 0xe0: /* wave type */
- slot = slot_array[r&0x1f];
- if(slot == -1) return;
- CH = &OPL->P_CH[slot/2];
- if(OPL->wavesel)
- {
- /* LOG(LOG_INF,("OPL SLOT %d wave select %d\n",slot,v&3)); */
- CH->SLOT[slot&1].wavetable = &SIN_TABLE[(v&0x03)*SIN_ENT];
- }
- return;
- }
-}
-
-/* lock/unlock for common table */
-static int OPL_LockTable(void)
-{
- num_lock++;
- if(num_lock>1) return 0;
- /* first time */
- cur_chip = NULL;
- /* allocate total level table (128kb space) */
- if( !OPLOpenTable() )
- {
- num_lock--;
- return -1;
- }
- return 0;
-}
-
-static void OPL_UnLockTable(void)
-{
- if(num_lock) num_lock--;
- if(num_lock) return;
- /* last time */
- cur_chip = NULL;
- OPLCloseTable();
-}
-
-#if (BUILD_YM3812 || BUILD_YM3526)
-/*******************************************************************************/
-/* YM3812 local section */
-/*******************************************************************************/
-
-/* ---------- update one of chip ----------- */
-void YM3812UpdateOne(FM_OPL *OPL, INT16 *buffer, int length)
-{
- int i;
- int data;
- OPLSAMPLE *buf = buffer;
- UINT32 amsCnt = OPL->amsCnt;
- UINT32 vibCnt = OPL->vibCnt;
- UINT8 rhythm = OPL->rhythm&0x20;
- OPL_CH *CH,*R_CH;
-
- if( (void *)OPL != cur_chip ){
- cur_chip = (void *)OPL;
- /* channel pointers */
- S_CH = OPL->P_CH;
- E_CH = &S_CH[9];
- /* rhythm slot */
- SLOT7_1 = &S_CH[7].SLOT[SLOT1];
- SLOT7_2 = &S_CH[7].SLOT[SLOT2];
- SLOT8_1 = &S_CH[8].SLOT[SLOT1];
- SLOT8_2 = &S_CH[8].SLOT[SLOT2];
- /* LFO state */
- amsIncr = OPL->amsIncr;
- vibIncr = OPL->vibIncr;
- ams_table = OPL->ams_table;
- vib_table = OPL->vib_table;
- }
- R_CH = rhythm ? &S_CH[6] : E_CH;
- for( i=0; i < length ; i++ )
- {
- /* channel A channel B channel C */
- /* LFO */
- ams = ams_table[(amsCnt+=amsIncr)>>AMS_SHIFT];
- vib = vib_table[(vibCnt+=vibIncr)>>VIB_SHIFT];
- outd[0] = 0;
- /* FM part */
- for(CH=S_CH ; CH < R_CH ; CH++)
- OPL_CALC_CH(CH);
- /* Rythn part */
- if(rhythm)
- OPL_CALC_RH(S_CH);
- /* limit check */
- data = Limit( outd[0] , OPL_MAXOUT, OPL_MINOUT );
- /* store to sound buffer */
- buf[i] = data >> OPL_OUTSB;
- }
-
- OPL->amsCnt = amsCnt;
- OPL->vibCnt = vibCnt;
-#ifdef OPL_OUTPUT_LOG
- if(opl_dbg_fp)
- {
- for(opl_dbg_chip=0;opl_dbg_chip<opl_dbg_maxchip;opl_dbg_chip++)
- if( opl_dbg_opl[opl_dbg_chip] == OPL) break;
- fprintf(opl_dbg_fp,"%c%c%c",0x20+opl_dbg_chip,length&0xff,length/256);
- }
-#endif
-}
-#endif /* (BUILD_YM3812 || BUILD_YM3526) */
-
-#if BUILD_Y8950
-
-void Y8950UpdateOne(FM_OPL *OPL, INT16 *buffer, int length)
-{
- int i;
- int data;
- OPLSAMPLE *buf = buffer;
- UINT32 amsCnt = OPL->amsCnt;
- UINT32 vibCnt = OPL->vibCnt;
- UINT8 rhythm = OPL->rhythm&0x20;
- OPL_CH *CH,*R_CH;
- YM_DELTAT *DELTAT = OPL->deltat;
-
- /* setup DELTA-T unit */
- YM_DELTAT_DECODE_PRESET(DELTAT);
-
- if( (void *)OPL != cur_chip ){
- cur_chip = (void *)OPL;
- /* channel pointers */
- S_CH = OPL->P_CH;
- E_CH = &S_CH[9];
- /* rhythm slot */
- SLOT7_1 = &S_CH[7].SLOT[SLOT1];
- SLOT7_2 = &S_CH[7].SLOT[SLOT2];
- SLOT8_1 = &S_CH[8].SLOT[SLOT1];
- SLOT8_2 = &S_CH[8].SLOT[SLOT2];
- /* LFO state */
- amsIncr = OPL->amsIncr;
- vibIncr = OPL->vibIncr;
- ams_table = OPL->ams_table;
- vib_table = OPL->vib_table;
- }
- R_CH = rhythm ? &S_CH[6] : E_CH;
- for( i=0; i < length ; i++ )
- {
- /* channel A channel B channel C */
- /* LFO */
- ams = ams_table[(amsCnt+=amsIncr)>>AMS_SHIFT];
- vib = vib_table[(vibCnt+=vibIncr)>>VIB_SHIFT];
- outd[0] = 0;
- /* deltaT ADPCM */
- if( DELTAT->portstate )
- YM_DELTAT_ADPCM_CALC(DELTAT);
- /* FM part */
- for(CH=S_CH ; CH < R_CH ; CH++)
- OPL_CALC_CH(CH);
- /* Rythn part */
- if(rhythm)
- OPL_CALC_RH(S_CH);
- /* limit check */
- data = Limit( outd[0] , OPL_MAXOUT, OPL_MINOUT );
- /* store to sound buffer */
- buf[i] = data >> OPL_OUTSB;
- }
- OPL->amsCnt = amsCnt;
- OPL->vibCnt = vibCnt;
- /* deltaT START flag */
- if( !DELTAT->portstate )
- OPL->status &= 0xfe;
-}
-#endif
-
-/* ---------- reset one of chip ---------- */
-void OPLResetChip(FM_OPL *OPL)
-{
- int c,s;
- int i;
-
- /* reset chip */
- OPL->mode = 0; /* normal mode */
- OPL_STATUS_RESET(OPL,0x7f);
- /* reset with register write */
- OPLWriteReg(OPL,0x01,0); /* wabesel disable */
- OPLWriteReg(OPL,0x02,0); /* Timer1 */
- OPLWriteReg(OPL,0x03,0); /* Timer2 */
- OPLWriteReg(OPL,0x04,0); /* IRQ mask clear */
- for(i = 0xff ; i >= 0x20 ; i-- ) OPLWriteReg(OPL,i,0);
- /* reset OPerator paramater */
- for( c = 0 ; c < OPL->max_ch ; c++ )
- {
- OPL_CH *CH = &OPL->P_CH[c];
- /* OPL->P_CH[c].PAN = OPN_CENTER; */
- for(s = 0 ; s < 2 ; s++ )
- {
- /* wave table */
- CH->SLOT[s].wavetable = &SIN_TABLE[0];
- /* CH->SLOT[s].evm = ENV_MOD_RR; */
- CH->SLOT[s].evc = EG_OFF;
- CH->SLOT[s].eve = EG_OFF+1;
- CH->SLOT[s].evs = 0;
- }
- }
-#if BUILD_Y8950
- if(OPL->type&OPL_TYPE_ADPCM)
- {
- YM_DELTAT *DELTAT = OPL->deltat;
-
- DELTAT->freqbase = OPL->freqbase;
- DELTAT->output_pointer = outd;
- DELTAT->portshift = 5;
- DELTAT->output_range = DELTAT_MIXING_LEVEL<<TL_BITS;
- YM_DELTAT_ADPCM_Reset(DELTAT,0);
- }
-#endif
-}
-
-/* ---------- Create one of vietual YM3812 ---------- */
-/* 'rate' is sampling rate and 'bufsiz' is the size of the */
-FM_OPL *OPLCreate(int type, int clock, int rate)
-{
- char *ptr;
- FM_OPL *OPL;
- int state_size;
- int max_ch = 9; /* normaly 9 channels */
-
- if( OPL_LockTable() ==-1) return NULL;
- /* allocate OPL state space */
- state_size = sizeof(FM_OPL);
- state_size += sizeof(OPL_CH)*max_ch;
-#if BUILD_Y8950
- if(type&OPL_TYPE_ADPCM) state_size+= sizeof(YM_DELTAT);
-#endif
- /* allocate memory block */
- ptr = malloc(state_size);
- if(ptr==NULL) return NULL;
- /* clear */
- memset(ptr,0,state_size);
- OPL = (FM_OPL *)ptr; ptr+=sizeof(FM_OPL);
- OPL->P_CH = (OPL_CH *)ptr; ptr+=sizeof(OPL_CH)*max_ch;
-#if BUILD_Y8950
- if(type&OPL_TYPE_ADPCM) OPL->deltat = (YM_DELTAT *)ptr; ptr+=sizeof(YM_DELTAT);
-#endif
- /* set channel state pointer */
- OPL->type = type;
- OPL->clock = clock;
- OPL->rate = rate;
- OPL->max_ch = max_ch;
- /* init grobal tables */
- OPL_initialize(OPL);
- /* reset chip */
- OPLResetChip(OPL);
-#ifdef OPL_OUTPUT_LOG
- if(!opl_dbg_fp)
- {
- opl_dbg_fp = fopen("opllog.opl","wb");
- opl_dbg_maxchip = 0;
- }
- if(opl_dbg_fp)
- {
- opl_dbg_opl[opl_dbg_maxchip] = OPL;
- fprintf(opl_dbg_fp,"%c%c%c%c%c%c",0x00+opl_dbg_maxchip,
- type,
- clock&0xff,
- (clock/0x100)&0xff,
- (clock/0x10000)&0xff,
- (clock/0x1000000)&0xff);
- opl_dbg_maxchip++;
- }
-#endif
- return OPL;
-}
-
-/* ---------- Destroy one of vietual YM3812 ---------- */
-void OPLDestroy(FM_OPL *OPL)
-{
-#ifdef OPL_OUTPUT_LOG
- if(opl_dbg_fp)
- {
- fclose(opl_dbg_fp);
- opl_dbg_fp = NULL;
- }
-#endif
- OPL_UnLockTable();
- free(OPL);
-}
-
-/* ---------- Option handlers ---------- */
-
-void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset)
-{
- OPL->TimerHandler = TimerHandler;
- OPL->TimerParam = channelOffset;
-}
-void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param)
-{
- OPL->IRQHandler = IRQHandler;
- OPL->IRQParam = param;
-}
-void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param)
-{
- OPL->UpdateHandler = UpdateHandler;
- OPL->UpdateParam = param;
-}
-#if BUILD_Y8950
-void OPLSetPortHandler(FM_OPL *OPL,OPL_PORTHANDLER_W PortHandler_w,OPL_PORTHANDLER_R PortHandler_r,int param)
-{
- OPL->porthandler_w = PortHandler_w;
- OPL->porthandler_r = PortHandler_r;
- OPL->port_param = param;
-}
-
-void OPLSetKeyboardHandler(FM_OPL *OPL,OPL_PORTHANDLER_W KeyboardHandler_w,OPL_PORTHANDLER_R KeyboardHandler_r,int param)
-{
- OPL->keyboardhandler_w = KeyboardHandler_w;
- OPL->keyboardhandler_r = KeyboardHandler_r;
- OPL->keyboard_param = param;
-}
-#endif
-/* ---------- YM3812 I/O interface ---------- */
-int OPLWrite(FM_OPL *OPL,int a,int v)
-{
- if( !(a&1) )
- { /* address port */
- OPL->address = v & 0xff;
- }
- else
- { /* data port */
- if(OPL->UpdateHandler) OPL->UpdateHandler(OPL->UpdateParam,0);
-#ifdef OPL_OUTPUT_LOG
- if(opl_dbg_fp)
- {
- for(opl_dbg_chip=0;opl_dbg_chip<opl_dbg_maxchip;opl_dbg_chip++)
- if( opl_dbg_opl[opl_dbg_chip] == OPL) break;
- fprintf(opl_dbg_fp,"%c%c%c",0x10+opl_dbg_chip,OPL->address,v);
- }
-#endif
- OPLWriteReg(OPL,OPL->address,v);
- }
- return OPL->status>>7;
-}
-
-unsigned char OPLRead(FM_OPL *OPL,int a)
-{
- if( !(a&1) )
- { /* status port */
- return OPL->status & (OPL->statusmask|0x80);
- }
- /* data port */
- switch(OPL->address)
- {
- case 0x05: /* KeyBoard IN */
- if(OPL->type&OPL_TYPE_KEYBOARD)
- {
- if(OPL->keyboardhandler_r)
- return OPL->keyboardhandler_r(OPL->keyboard_param);
- else {
- LOG(LOG_WAR,("OPL:read unmapped KEYBOARD port\n"));
- }
- }
- return 0;
-#if 0
- case 0x0f: /* ADPCM-DATA */
- return 0;
-#endif
- case 0x19: /* I/O DATA */
- if(OPL->type&OPL_TYPE_IO)
- {
- if(OPL->porthandler_r)
- return OPL->porthandler_r(OPL->port_param);
- else {
- LOG(LOG_WAR,("OPL:read unmapped I/O port\n"));
- }
- }
- return 0;
- case 0x1a: /* PCM-DATA */
- return 0;
- }
- return 0;
-}
-
-int OPLTimerOver(FM_OPL *OPL,int c)
-{
- if( c )
- { /* Timer B */
- OPL_STATUS_SET(OPL,0x20);
- }
- else
- { /* Timer A */
- OPL_STATUS_SET(OPL,0x40);
- /* CSM mode key,TL control */
- if( OPL->mode & 0x80 )
- { /* CSM mode total level latch and auto key on */
- int ch;
- if(OPL->UpdateHandler) OPL->UpdateHandler(OPL->UpdateParam,0);
- for(ch=0;ch<9;ch++)
- CSMKeyControll( &OPL->P_CH[ch] );
- }
- }
- /* reload timer */
- if (OPL->TimerHandler) (OPL->TimerHandler)(OPL->TimerParam+c,(double)OPL->T[c]*OPL->TimerBase);
- return OPL->status>>7;
-}
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