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Diffstat (limited to 'src/libxineadec/nosefart/fmopl.c')
| -rw-r--r-- | src/libxineadec/nosefart/fmopl.c | 1323 |
1 files changed, 0 insertions, 1323 deletions
diff --git a/src/libxineadec/nosefart/fmopl.c b/src/libxineadec/nosefart/fmopl.c deleted file mode 100644 index 29c884096..000000000 --- a/src/libxineadec/nosefart/fmopl.c +++ /dev/null @@ -1,1323 +0,0 @@ -/* -** -** File: fmopl.c -- software implementation of FM sound generator -** -** Copyright (C) 1999 Tatsuyuki Satoh , MultiArcadeMachineEmurator development -** -** Version 0.36f -** -*/ - -/* - preliminary : - Problem : - note: -*/ - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <stdarg.h> -#include <math.h> -//#include "driver.h" /* use M.A.M.E. */ -#include "fmopl.h" - -/* MPC - hacks */ -#include "types.h" -#include "log.h" - -#ifndef PI -#define PI 3.14159265358979323846 -#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 */ -#define ML(x) ((UINT32)((x)*0.1875*2/EG_STEP)) -static const UINT32 KSL_TABLE[8*16]= -{ - /* OCT 0 */ - ML(0.000), ML(0.000), ML(0.000), ML(0.000), - ML(0.000), ML(0.000), ML(0.000), ML(0.000), - ML(0.000), ML(0.000), ML(0.000), ML(0.000), - ML(0.000), ML(0.000), ML(0.000), ML(0.000), - /* OCT 1 */ - ML(0.000), ML(0.000), ML(0.000), ML(0.000), - ML(0.000), ML(0.000), ML(0.000), ML(0.000), - ML(0.000), ML(0.750), ML(1.125), ML(1.500), - ML(1.875), ML(2.250), ML(2.625), ML(3.000), - /* OCT 2 */ - ML(0.000), ML(0.000), ML(0.000), ML(0.000), - ML(0.000), ML(1.125), ML(1.875), ML(2.625), - ML(3.000), ML(3.750), ML(4.125), ML(4.500), - ML(4.875), ML(5.250), ML(5.625), ML(6.000), - /* OCT 3 */ - ML(0.000), ML(0.000), ML(0.000), ML(1.875), - ML(3.000), ML(4.125), ML(4.875), ML(5.625), - ML(6.000), ML(6.750), ML(7.125), ML(7.500), - ML(7.875), ML(8.250), ML(8.625), ML(9.000), - /* OCT 4 */ - ML(0.000), ML(0.000), ML(3.000), ML(4.875), - ML(6.000), ML(7.125), ML(7.875), ML(8.625), - ML(9.000), ML(9.750),ML(10.125),ML(10.500), - ML(10.875),ML(11.250),ML(11.625),ML(12.000), - /* OCT 5 */ - ML(0.000), ML(3.000), ML(6.000), ML(7.875), - ML(9.000),ML(10.125),ML(10.875),ML(11.625), - ML(12.000),ML(12.750),ML(13.125),ML(13.500), - ML(13.875),ML(14.250),ML(14.625),ML(15.000), - /* OCT 6 */ - ML(0.000), ML(6.000), ML(9.000),ML(10.875), - ML(12.000),ML(13.125),ML(13.875),ML(14.625), - ML(15.000),ML(15.750),ML(16.125),ML(16.500), - ML(16.875),ML(17.250),ML(17.625),ML(18.000), - /* OCT 7 */ - ML(0.000), ML(9.000),ML(12.000),ML(13.875), - ML(15.000),ML(16.125),ML(16.875),ML(17.625), - ML(18.000),ML(18.750),ML(19.125),ML(19.500), - ML(19.875),ML(20.250),ML(20.625),ML(21.000) -}; -#undef ML - -/* 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) ((INT32) (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(x) ((UINT32) (2*(x))) -static const UINT32 MUL_TABLE[16]= { -/* 1/2, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,12,13,14,15 */ - ML(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) -}; -#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 FMSAMPLE *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(n,x) if( (n)>=LOG_LEVEL ) logerror x -#define LOG(n,x) if( (n)>=LOG_LEVEL ) log_printf 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 algorythm connection */ -static void set_algorythm( 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 = (INT32) (((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 rythm 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)*((int)(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] = (INT32) (rate / ARRATE); - OPL->DR_TABLE[i] = (INT32) (rate / DRRATE); - } - for (i = 60;i < 76;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 = (int) (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] = (INT32) ((1.0/EG_STEP)*pom); /* 1dB */ - AMS_TABLE[AMS_ENT+i] = (INT32) ((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 + (INT32) (pom*0.07); /* +- 7cent */ - VIB_TABLE[VIB_ENT+i] = VIB_RATE + (INT32) (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 Controll */ -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_initalize(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] = (UINT32) (OPL->freqbase * fn * FREQ_RATE * (1<<7) / 2); - } - /* LFO freq.table */ - OPL->amsIncr = (INT32) (OPL->rate ? (double)AMS_ENT*(1<<AMS_SHIFT) / OPL->rate * 3.7 * ((double)OPL->clock/3600000) : 0); - OPL->vibIncr = (INT32) (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; - unsigned int block_fnum; - - switch(r&0xe0) - { - case 0x00: /* 00-1f:controll */ - 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 controll : 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->rythm^v; - OPL->ams_table = &AMS_TABLE[v&0x80 ? AMS_ENT : 0]; - OPL->vib_table = &VIB_TABLE[v&0x40 ? VIB_ENT : 0]; - OPL->rythm = v&0x3f; - if(OPL->rythm&0x20) - { -#if 0 - usrintf_showmessage("OPL Rythm 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_algorythm(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; - FMSAMPLE *buf = buffer; - UINT32 amsCnt = OPL->amsCnt; - UINT32 vibCnt = OPL->vibCnt; - UINT8 rythm = OPL->rythm&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]; - /* rythm 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 = rythm ? &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(rythm) - 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; -} -#endif /* (BUILD_YM3812 || BUILD_YM3526) */ - -#if BUILD_Y8950 - -void Y8950UpdateOne(FM_OPL *OPL, INT16 *buffer, int length) -{ - int i; - int data; - FMSAMPLE *buf = buffer; - UINT32 amsCnt = OPL->amsCnt; - UINT32 vibCnt = OPL->vibCnt; - UINT8 rythm = OPL->rythm&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]; - /* rythm 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 = rythm ? &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->flag ) - YM_DELTAT_ADPCM_CALC(DELTAT); - /* FM part */ - for(CH=S_CH ; CH < R_CH ; CH++) - OPL_CALC_CH(CH); - /* Rythn part */ - if(rythm) - 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->flag ) - 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_initalize(OPL); - /* reset chip */ - OPLResetChip(OPL); - return OPL; -} - -/* ---------- Destroy one of vietual YM3812 ---------- */ -void OPLDestroy(FM_OPL *OPL) -{ - 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); - 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 controll */ - 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; -} |