--- /dev/null
+--- xmp-2.0.5-pre3/src/player/fmopl.c.orig 2001-02-26 01:39:24.000000000 +0100
++++ xmp-2.0.5-pre3/src/player/fmopl.c 2001-01-13 21:10:53.000000000 +0100
+@@ -1,36 +1,1341 @@
+ /*
+- * Dummy DFSG-compliant replacement for fmopl.c
+- *
+- * $Id$
+- */
++**
++** 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. */
++
++/*** For xmp ***/
++#define HAS_YM3812 1
++#define INLINE inline
++/* $Id$ */
++
+ #include "fmopl.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 (0.1875*2/EG_STEP)
++static const UINT32 KSL_TABLE[8*16]=
++{
++ /* OCT 0 */
++ 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*ML,
++ /* OCT 1 */
++ 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*ML,
++ /* OCT 2 */
++ 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*ML,
++ /* OCT 3 */
++ 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*ML,
++ /* OCT 4 */
++ 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*ML,
++ /* OCT 5 */
++ 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*ML,
++ /* OCT 6 */
++ 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*ML,
++ /* OCT 7 */
++ 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*ML
++};
++#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) (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 */
++/* current 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
++
++static void Log(int level,char *format,...)
++{
++#if 0
++ va_list argptr;
++
++ if( level < LOG_LEVEL ) return;
++ va_start(argptr,format);
++ /* */
++ if (errorlog) vfprintf( errorlog, format , argptr);
++#endif
++}
++
++/* --------------------- 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 = (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)*(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 < 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 = 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 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] = 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: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 */
++/******************************************************************************/
++
++/*** Prototype changed to use with xmp ***/
++/* ---------- update one of chip ----------- */
+ void YM3812UpdateOne(FM_OPL *OPL, FMSAMPLE *bk, int len, int st, int vl, int vr)
+ {
++ int data;
++ 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;
++ while (len--) {
++ /* 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);
++ /* Rythm part */
++ if(rythm)
++ OPL_CALC_RH(S_CH);
++ /* limit check */
++ data = Limit( outd[0] , OPL_MAXOUT, OPL_MINOUT );
++ /* store to sound buffer - changed to use with xmp */
++#if 0
++ if (st)
++ *(bk++) += (data >> OPL_OUTSB) * vr;
++ *(bk++) += (data >> OPL_OUTSB) * vl;
++#else
++ if (st)
++ *(bk++) += (data >> OPL_OUTSB) * 4 * vr;
++ *(bk++) += (data >> OPL_OUTSB) * 4 * vl;
++#endif
++ }
++
++ OPL->amsCnt = amsCnt;
++ OPL->vibCnt = vibCnt;
++}
++#endif /* (BUILD_YM3812 || BUILD_YM3526) */
++
++#if BUILD_Y8950
++
++void Y8950UpdateOne(FM_OPL *OPL, void *buffer, int length)
++{
++ int i;
++ int data;
++ FMSAMPLE *buf = (FMSAMPLE *)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 virtual YM3812 ---------- */
++/* 'rate' is sampling rate and 'bufsiz' is the size of the */
+ FM_OPL *OPLCreate(int type, int clock, int rate)
+ {
+- return NULL;
++ 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)
+ {
+- return 0;
++ 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;
++}
+--- xmp-2.0.5-pre3/src/player/fmopl.h.orig 2001-02-26 01:39:24.000000000 +0100
++++ xmp-2.0.5-pre3/src/player/fmopl.h 2001-01-07 14:22:51.000000000 +0100
+@@ -1,22 +1,162 @@
+-/*
+- * Dummy DFSG-compliant replacement for fmopl.h
+- *
+- * $Id$
+- */
+-
+ #ifndef __FMOPL_H_
+ #define __FMOPL_H_
+
+-#define OPL_TYPE_IO 0
++#define BUILD_YM3812 (HAS_YM3812)
++#define BUILD_YM3526 (HAS_YM3526)
++#define BUILD_Y8950 (HAS_Y8950)
++
++/* compiler dependence */
++#ifndef OSD_CPU_H
++#define OSD_CPU_H
++typedef unsigned char UINT8; /* unsigned 8bit */
++typedef unsigned short UINT16; /* unsigned 16bit */
++typedef unsigned int UINT32; /* unsigned 32bit */
++typedef signed char INT8; /* signed 8bit */
++typedef signed short INT16; /* signed 16bit */
++typedef signed int INT32; /* signed 32bit */
++#endif
++
++typedef INT32 FMSAMPLE; /* to use with xmp */
++
++#if BUILD_Y8950
++#include "ymdeltat.h"
++#endif
++
++typedef void (*OPL_TIMERHANDLER)(int channel,double interval_Sec);
++typedef void (*OPL_IRQHANDLER)(int param,int irq);
++typedef void (*OPL_UPDATEHANDLER)(int param,int min_interval_us);
++typedef void (*OPL_PORTHANDLER_W)(int param,unsigned char data);
++typedef unsigned char (*OPL_PORTHANDLER_R)(int param);
++
++/* !!!!! here is private section , do not access there member direct !!!!! */
+
+-typedef void FM_OPL;
+-typedef int FMSAMPLE;
++#define OPL_TYPE_WAVESEL 0x01 /* waveform select */
++#define OPL_TYPE_ADPCM 0x02 /* DELTA-T ADPCM unit */
++#define OPL_TYPE_KEYBOARD 0x04 /* keyboard interface */
++#define OPL_TYPE_IO 0x08 /* I/O port */
++
++/* ---------- OPL one of slot ---------- */
++typedef struct fm_opl_slot {
++ INT32 TL; /* total level :TL << 8 */
++ INT32 TLL; /* adjusted now TL */
++ UINT8 KSR; /* key scale rate :(shift down bit) */
++ INT32 *AR; /* attack rate :&AR_TABLE[AR<<2] */
++ INT32 *DR; /* decay rate :&DR_TALBE[DR<<2] */
++ INT32 SL; /* sustin level :SL_TALBE[SL] */
++ INT32 *RR; /* release rate :&DR_TABLE[RR<<2] */
++ UINT8 ksl; /* keyscale level :(shift down bits) */
++ UINT8 ksr; /* key scale rate :kcode>>KSR */
++ UINT32 mul; /* multiple :ML_TABLE[ML] */
++ UINT32 Cnt; /* frequency count : */
++ UINT32 Incr; /* frequency step : */
++ /* envelope generator state */
++ UINT8 eg_typ; /* envelope type flag */
++ UINT8 evm; /* envelope phase */
++ INT32 evc; /* envelope counter */
++ INT32 eve; /* envelope counter end point */
++ INT32 evs; /* envelope counter step */
++ INT32 evsa; /* envelope step for AR :AR[ksr] */
++ INT32 evsd; /* envelope step for DR :DR[ksr] */
++ INT32 evsr; /* envelope step for RR :RR[ksr] */
++ /* LFO */
++ UINT8 ams; /* ams flag */
++ UINT8 vib; /* vibrate flag */
++ /* wave selector */
++ INT32 **wavetable;
++}OPL_SLOT;
++
++/* ---------- OPL one of channel ---------- */
++typedef struct fm_opl_channel {
++ OPL_SLOT SLOT[2];
++ UINT8 CON; /* connection type */
++ UINT8 FB; /* feed back :(shift down bit) */
++ INT32 *connect1; /* slot1 output pointer */
++ INT32 *connect2; /* slot2 output pointer */
++ INT32 op1_out[2]; /* slot1 output for selfeedback */
++ /* phase generator state */
++ UINT32 block_fnum; /* block+fnum : */
++ UINT8 kcode; /* key code : KeyScaleCode */
++ UINT32 fc; /* Freq. Increment base */
++ UINT32 ksl_base; /* KeyScaleLevel Base step */
++ UINT8 keyon; /* key on/off flag */
++} OPL_CH;
++
++/* OPL state */
++typedef struct fm_opl_f {
++ UINT8 type; /* chip type */
++ int clock; /* master clock (Hz) */
++ int rate; /* sampling rate (Hz) */
++ double freqbase; /* frequency base */
++ double TimerBase; /* Timer base time (==sampling time) */
++ UINT8 address; /* address register */
++ UINT8 status; /* status flag */
++ UINT8 statusmask; /* status mask */
++ UINT32 mode; /* Reg.08 : CSM , notesel,etc. */
++ /* Timer */
++ int T[2]; /* timer counter */
++ UINT8 st[2]; /* timer enable */
++ /* FM channel slots */
++ OPL_CH *P_CH; /* pointer of CH */
++ int max_ch; /* maximum channel */
++ /* Rythm sention */
++ UINT8 rythm; /* Rythm mode , key flag */
++#if BUILD_Y8950
++ /* Delta-T ADPCM unit (Y8950) */
++ YM_DELTAT *deltat; /* DELTA-T ADPCM */
++#endif
++ /* Keyboard / I/O interface unit (Y8950) */
++ UINT8 portDirection;
++ UINT8 portLatch;
++ OPL_PORTHANDLER_R porthandler_r;
++ OPL_PORTHANDLER_W porthandler_w;
++ int port_param;
++ OPL_PORTHANDLER_R keyboardhandler_r;
++ OPL_PORTHANDLER_W keyboardhandler_w;
++ int keyboard_param;
++ /* time tables */
++ INT32 AR_TABLE[75]; /* atttack rate tables */
++ INT32 DR_TABLE[75]; /* decay rate tables */
++ UINT32 FN_TABLE[1024]; /* fnumber -> increment counter */
++ /* LFO */
++ INT32 *ams_table;
++ INT32 *vib_table;
++ INT32 amsCnt;
++ INT32 amsIncr;
++ INT32 vibCnt;
++ INT32 vibIncr;
++ /* wave selector enable flag */
++ UINT8 wavesel;
++ /* external event callback handler */
++ OPL_TIMERHANDLER TimerHandler; /* TIMER handler */
++ int TimerParam; /* TIMER parameter */
++ OPL_IRQHANDLER IRQHandler; /* IRQ handler */
++ int IRQParam; /* IRQ parameter */
++ OPL_UPDATEHANDLER UpdateHandler; /* stream update handler */
++ int UpdateParam; /* stream update parameter */
++} FM_OPL;
++
++/* ---------- Generic interface section ---------- */
++#define OPL_TYPE_YM3526 (0)
++#define OPL_TYPE_YM3812 (OPL_TYPE_WAVESEL)
++#define OPL_TYPE_Y8950 (OPL_TYPE_ADPCM|OPL_TYPE_KEYBOARD|OPL_TYPE_IO)
+
+ FM_OPL *OPLCreate(int type, int clock, int rate);
+ void OPLDestroy(FM_OPL *OPL);
++void OPLSetTimerHandler(FM_OPL *OPL,OPL_TIMERHANDLER TimerHandler,int channelOffset);
++void OPLSetIRQHandler(FM_OPL *OPL,OPL_IRQHANDLER IRQHandler,int param);
++void OPLSetUpdateHandler(FM_OPL *OPL,OPL_UPDATEHANDLER UpdateHandler,int param);
++/* Y8950 port handlers */
++void OPLSetPortHandler(FM_OPL *OPL,OPL_PORTHANDLER_W PortHandler_w,OPL_PORTHANDLER_R PortHandler_r,int param);
++void OPLSetKeyboardHandler(FM_OPL *OPL,OPL_PORTHANDLER_W KeyboardHandler_w,OPL_PORTHANDLER_R KeyboardHandler_r,int param);
++
+ void OPLResetChip(FM_OPL *OPL);
+ int OPLWrite(FM_OPL *OPL,int a,int v);
+ unsigned char OPLRead(FM_OPL *OPL,int a);
++int OPLTimerOver(FM_OPL *OPL,int c);
++
++/* YM3626/YM3812 local section - changed to use with xmp */
+ void YM3812UpdateOne(FM_OPL *OPL, FMSAMPLE *bk, int len, int st, int vl, int vr);
+
++void Y8950UpdateOne(FM_OPL *OPL, void *buffer, int length);
++
+ #endif
+--- xmp-2.0.5-pre3/src/misc/depack.c.orig 2001-02-26 01:39:24.000000000 +0100
++++ xmp-2.0.5-pre3/src/misc/depack.c 2000-12-29 19:10:09.000000000 +0100
+@@ -1,16 +1,237 @@
++/* Copyright (c) Marc Espie, 1995
++ * See accompanying file README for distribution information
++ *
++ * Modified by Claudio Matsuoka for use in xmp.
++ * small modifications by mld for use with uade
++ *
++ * $Id$
++ */
+
+-/*
+- * DFSG-compliant dummy replacement for the non-free Powerpacker decruncher
++/* part of libdecr.a for uade
++ *
++ * REINSERTED:
++ * "if packed" and memory allocation checks from original ppunpack.
++ *
++ * DONE:
++ * corrupt file and data detection
++ * (thanks to Don Adan and Dirk Stoecker for help and infos)
++ * implemeted "efficiency" checks
++ * further detection based on code by Georg Hoermann
++ *
++ * TODO:
++ * more corrupt file checking, because the decruncher segfaults on some corrupt
++ * data :-(
+ *
+- * $Id$
+ */
+
++#ifdef HAVE_CONFIG_H
++#include "config.h"
++#endif
+ #include <stdio.h>
++#include <stdlib.h>
++#ifdef __EMX__
++#include <sys/types.h>
++#endif
++#include <sys/stat.h>
++#include <unistd.h>
+
+-int xmpi_decrunch_pp (FILE *f, FILE *fo)
++#include "xmpi.h"
++
++#define val(p) ((p)[0]<<16 | (p)[1] << 8 | (p)[2])
++
++static uint32 shift_in;
++static uint32 counter;
++static uint8 *source;
++
++
++static uint32 get_bits (uint32 n)
+ {
+- report ("Powerpacker decruncher missing. This file can't be decrunched\n");
++ uint32 result = 0;
++ int i = n;
++
++ while (i--){
++ if (counter == 0) {
++ counter = 8;
++ shift_in = *--source;
++ }
+
+- return -1;
++ result = (result << 1) | (shift_in & 1);
++ shift_in >>= 1;
++ counter--;
++ }
++ return result;
+ }
+
++
++static int
++ppdepack (uint8 *packed, uint8 *depacked, uint32 plen, uint32 unplen)
++{
++ uint8 *dest;
++ int n_bits;
++ int idx;
++ uint32 bytes;
++ int to_add;
++ uint32 offset;
++ uint8 offset_sizes[4];
++ int i;
++
++ offset_sizes[0] = packed[4]; /* skip signature */
++ offset_sizes[1] = packed[5];
++ offset_sizes[2] = packed[6];
++ offset_sizes[3] = packed[7];
++
++ /* initialize source of bits */
++
++ source = packed + plen - 4;
++ dest = depacked + unplen;
++
++
++ /* skip bits */
++ get_bits (source[3]);
++
++ /* do it forever, i.e., while the whole file isn't unpacked */
++ while (dest > depacked) {
++
++ /* copy some bytes from the source anyway */
++
++ if (source < packed)
++ {
++ return -1;
++ }
++
++ if (get_bits (1) == 0) {
++ bytes = 0;
++ do {
++ to_add = get_bits (2);
++ bytes += to_add;
++ } while (to_add == 3);
++ for (i = 0; i <= bytes; i++)
++ {
++ if (--dest < depacked)
++ return 0;
++ *dest = get_bits (8);
++ }
++ }
++ /* decode what to copy from the destination file */
++
++ idx = get_bits (2);
++ n_bits = offset_sizes[idx];
++ /* bytes to copy */
++ bytes = idx + 1;
++ if (bytes == 4) { /* 4 means >=4 */
++
++ /* and maybe a bigger offset */
++ if (get_bits (1) == 0)
++ offset = get_bits (7);
++ else
++ offset = get_bits (n_bits);
++
++ do {
++ to_add = get_bits (3);
++ bytes += to_add;
++ } while (to_add == 7);
++ } else
++ offset = get_bits (n_bits);
++
++ ++offset;
++ for (i = 0; i <= bytes; i++) {
++ if (--dest < depacked)
++ return 0;
++ if (dest + offset > depacked + unplen) return -1;
++ *dest = dest[offset];
++ }
++
++ }
++
++ return 0;
++}
++
++
++int xmpi_decrunch_pp (FILE *f, FILE *fo)
++{
++ uint8 *packed, *unpacked;
++ int plen, unplen;
++ struct stat st;
++
++ if (fo == NULL)
++ return -1;
++
++ fstat (fileno (f), &st);
++ plen = st.st_size;
++ counter = 0;
++
++
++ /* Amiga longwords are only on even addresses.
++ * The pp20 data format has the length stored in a longword
++ * after the packed data, so I guess a file that is not even
++ * is probl not a valid pp20 file. Thanks for Don Adan for
++ * reminding me on this! - mld
++ */
++
++ if ((plen != (plen / 2) * 2))
++ {
++ fprintf(stderr, "filesize not even...");
++ return -1 ;
++ }
++
++ packed = malloc (plen);
++ if (!packed)
++ {
++ fprintf(stderr, "can't allocate memory for packed data...");
++ return -1;
++ }
++
++ fread (packed, plen, 1, f);
++
++ /* Hmmh... original pp20 only support efficiency from 9 9 9 9 up to 9 10 12 13, afaik
++ * but the xfd detection code says this... *sigh*
++ *
++ * move.l 4(a0),d0
++ * cmp.b #9,d0
++ * blo.b .Exit
++ * and.l #$f0f0f0f0,d0
++ * bne.s .Exit
++ */
++
++
++ if (((packed[4] < 9 ) || (packed[5] < 9 ) || (packed[6] < 9 ) || (packed[7] < 9)))
++ {
++ fprintf(stderr, "invalid efficiency...");
++ return -1;
++ }
++
++
++ if (((((val (packed +4) ) * 256 ) + packed[7] ) & 0xf0f0f0f0) != 0 )
++ {
++ fprintf(stderr, "invalid efficiency(?)...");
++ return -1;
++ }
++
++
++ unplen = val (packed + plen - 4);
++
++ if (!unplen)
++ {
++ fprintf(stderr, "not a powerpacked file...");
++ return -1;
++ }
++
++ unpacked = (uint8 *) malloc (unplen);
++ if (!unpacked)
++ {
++ fprintf(stderr, "can't allocate memory for unpacked data...");
++ return -1;
++ }
++
++ if (ppdepack (packed, unpacked, plen, unplen) == -1)
++ {
++ fprintf(stderr, "error while decrunching data...");
++ return -1;
++ }
++
++ fwrite (unpacked, unplen, 1, fo);
++ free (unpacked);
++ free (packed);
++
++ return 0;
++}
projects / packages / xmp.git / commitdiff