From d9e0499a36004023dea3dfd95312b1d91eca5bbc Mon Sep 17 00:00:00 2001 From: Johannes Schickel Date: Tue, 5 May 2009 21:40:50 +0000 Subject: AdLib emulator changes part1 (breaks compilation :-/): - Add new directory sound/softsynth/opl - Move sound/fmopl to sound/softsynth/opl/mame svn-id: r40333 --- sound/fmopl.cpp | 1191 ------------------------------------------ sound/fmopl.h | 173 ------ sound/module.mk | 2 +- sound/softsynth/opl/mame.cpp | 1191 ++++++++++++++++++++++++++++++++++++++++++ sound/softsynth/opl/mame.h | 173 ++++++ 5 files changed, 1365 insertions(+), 1365 deletions(-) delete mode 100644 sound/fmopl.cpp delete mode 100644 sound/fmopl.h create mode 100644 sound/softsynth/opl/mame.cpp create mode 100644 sound/softsynth/opl/mame.h (limited to 'sound') diff --git a/sound/fmopl.cpp b/sound/fmopl.cpp deleted file mode 100644 index 4834e586c3..0000000000 --- a/sound/fmopl.cpp +++ /dev/null @@ -1,1191 +0,0 @@ -/* ScummVM - Graphic Adventure Engine - * - * ScummVM is the legal property of its developers, whose names - * are too numerous to list here. Please refer to the COPYRIGHT - * file distributed with this source distribution. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - - * This program 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 General Public License for more details. - - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * $URL$ - * $Id$ - * - * LGPL licensed version of MAMEs fmopl (V0.37a modified) by - * Tatsuyuki Satoh. Included from LGPL'ed AdPlug. - */ - -#include -#include -#include -#include -#include - -#include "sound/fmopl.h" - -#if defined (_WIN32_WCE) || defined (__SYMBIAN32__) || defined(PALMOS_MODE) || defined(__GP32__) || defined(GP2X) || defined (__MAEMO__) || defined(__DS__) || defined (__MINT__) -#include "common/config-manager.h" -#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 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<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 */ - - // WORKAROUND: The Kyra engine does something very strange when - // starting a new song. For each channel: - // - // * The release rate is set to "fastest". - // * Any note is keyed off. - // * A very low-frequency note is keyed on. - // - // Usually, what happens next is that the real notes is keyed - // on immediately, in which case there's no problem. - // - // However, if the note is again keyed off (because the channel - // begins on a rest rather than a note), the envelope counter - // was moved from the very lowest point on the attack curve to - // the very highest point on the release curve. - // - // Again, this might not be a problem, if the release rate is - // still set to "fastest". But in many cases, it had already - // been increased. And, possibly because of inaccuracies in the - // envelope generator, that would cause the note to "fade out" - // for quite a long time. - // - // What we really need is a way to find the correct starting - // point for the envelope counter, and that may be what the - // commented-out line below is meant to do. For now, simply - // handle the pathological case. - - if (SLOT->evm == ENV_MOD_AR && SLOT->evc == EG_AST) - SLOT->evc = EG_DED; - else if( !(SLOT->evc & EG_DST) ) - //SLOT->evc = (ENV_CURVE[SLOT->evc>>ENV_BITS]<evc = EG_DST; - SLOT->eve = EG_DED; - SLOT->evs = SLOT->evsr; - SLOT->evm = ENV_MOD_RR; - } -} - -/* ---------- calcrate Envelope Generator & Phase Generator ---------- */ - -/* return : envelope output */ -inline uint 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) { - int *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>>1]; - 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>>1]; - 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 = (int)((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>>1]; - 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>>1]; - 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)>>(24-SIN_ENT_SHIFT)) & (SIN_ENT-1)][env] -/* ---------- calcrate one of channel ---------- */ -inline void OPL_CALC_CH(OPL_CH *CH) { - uint env_out; - OPL_SLOT *SLOT; - - feedback2 = 0; - /* SLOT 1 */ - SLOT = &CH->SLOT[SLOT1]; - env_out=OPL_CALC_SLOT(SLOT); - if(env_out < (uint)(EG_ENT - 1)) { - /* PG */ - if(SLOT->vib) - SLOT->Cnt += (SLOT->Incr * vib) >> VIB_RATE_SHIFT; - else - SLOT->Cnt += SLOT->Incr; - /* connection */ - 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 < (uint)(EG_ENT - 1)) { - /* PG */ - if(SLOT->vib) - SLOT->Cnt += (SLOT->Incr * vib) >> VIB_RATE_SHIFT; - else - SLOT->Cnt += SLOT->Incr; - /* connection */ - outd[0] += OP_OUT(SLOT, env_out, feedback2); - } -} - -/* ---------- calcrate rythm block ---------- */ -#define WHITE_NOISE_db 6.0 -inline void OPL_CALC_RH(FM_OPL *OPL, OPL_CH *CH) { - uint env_tam, env_sd, env_top, env_hh; - // This code used to do int(OPL->rnd.getRandomBit() * (WHITE_NOISE_db / EG_STEP)), - // but EG_STEP = 96.0/EG_ENT, and WHITE_NOISE_db=6.0. So, that's equivalent to - // int(OPL->rnd.getRandomBit() * EG_ENT/16). We know that EG_ENT is 4096, or 1024, - // or 128, so we can safely avoid any FP ops. - int whitenoise = OPL->rnd.getRandomBit() * (EG_ENT>>4); - - int 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_SHIFT; - else - SLOT->Cnt += SLOT->Incr; - /* connection */ - 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_SHIFT; - else - SLOT->Cnt += SLOT->Incr; - /* connection */ - 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 += (SLOT7_1->Incr * vib) >> (VIB_RATE_SHIFT-1); - else - SLOT7_1->Cnt += 2 * SLOT7_1->Incr; - if(SLOT7_2->vib) - SLOT7_2->Cnt += (CH[7].fc * vib) >> (VIB_RATE_SHIFT-3); - else - SLOT7_2->Cnt += (CH[7].fc * 8); - if(SLOT8_1->vib) - SLOT8_1->Cnt += (SLOT8_1->Incr * vib) >> VIB_RATE_SHIFT; - else - SLOT8_1->Cnt += SLOT8_1->Incr; - if(SLOT8_2->vib) - SLOT8_2->Cnt += ((CH[8].fc * 3) * vib) >> (VIB_RATE_SHIFT-4); - else - SLOT8_2->Cnt += (CH[8].fc * 48); - - tone8 = OP_OUT(SLOT8_2,whitenoise,0 ); - - /* SD */ - if(env_sd < (uint)(EG_ENT - 1)) - outd[0] += OP_OUT(SLOT7_1, env_sd, 0) * 8; - /* TAM */ - if(env_tam < (uint)(EG_ENT - 1)) - outd[0] += OP_OUT(SLOT8_1, env_tam, 0) * 2; - /* TOP-CY */ - if(env_top < (uint)(EG_ENT - 1)) - outd[0] += OP_OUT(SLOT7_2, env_top, tone8) * 2; - /* HH */ - if(env_hh < (uint)(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] = (int)(rate / ARRATE); - OPL->DR_TABLE[i] = (int)(rate / DRRATE); - } - for (i = 60; i < 76; i++) { - OPL->AR_TABLE[i] = EG_AED-1; - OPL->DR_TABLE[i] = OPL->DR_TABLE[60]; - } -} - -/* ---------- generic table initialize ---------- */ -static int OPLOpenTable(void) { - int s,t; - double rate; - int i,j; - double pom; - -#ifdef __DS__ - DS::fastRamReset(); - - TL_TABLE = (int *) DS::fastRamAlloc(TL_MAX * 2 * sizeof(int *)); - SIN_TABLE = (int **) DS::fastRamAlloc(SIN_ENT * 4 * sizeof(int *)); -#else - - /* allocate dynamic tables */ - if((TL_TABLE = (int *)malloc(TL_MAX * 2 * sizeof(int))) == NULL) - return 0; - - if((SIN_TABLE = (int **)malloc(SIN_ENT * 4 * sizeof(int *))) == NULL) { - free(TL_TABLE); - return 0; - } -#endif - - if((AMS_TABLE = (int *)malloc(AMS_ENT * 2 * sizeof(int))) == NULL) { - free(TL_TABLE); - free(SIN_TABLE); - return 0; - } - - if((VIB_TABLE = (int *)malloc(VIB_ENT * 2 * sizeof(int))) == 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(10.0, EG_STEP * t / 20); /* dB -> voltage */ - TL_TABLE[ t] = (int)rate; - TL_TABLE[TL_MAX + 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]; - } - 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]; - } - - - ENV_CURVE = (int *)malloc(sizeof(int) * (2*EG_ENT+1)); - - /* 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] = (int)((1.0 / EG_STEP) * pom); /* 1dB */ - AMS_TABLE[AMS_ENT + i] = (int)((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] = (int)(VIB_RATE + (pom * 0.07)); /* +- 7cent */ - VIB_TABLE[VIB_ENT + i] = (int)(VIB_RATE + (pom * 0.14)); /* +-14cent */ - } - return 1; -} - -static void OPLCloseTable(void) { - free(TL_TABLE); - free(SIN_TABLE); - free(AMS_TABLE); - free(VIB_TABLE); - free(ENV_CURVE); -} - -/* 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] = (uint)(OPL->freqbase * fn * FREQ_RATE * (1<<7) / 2); - } - /* LFO freq.table */ - OPL->amsIncr = (int)(OPL->rate ? (double)AMS_ENT * (1 << AMS_SHIFT) / OPL->rate * 3.7 * ((double)OPL->clock/3600000) : 0); - OPL->vibIncr = (int)(OPL->rate ? (double)VIB_ENT * (1 << VIB_SHIFT) / OPL->rate * 6.4 * ((double)OPL->clock/3600000) : 0); -} - -/* ---------- write a OPL registers ---------- */ -void OPLWriteReg(FM_OPL *OPL, int r, int v) { - OPL_CH *CH; - int slot; - uint 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; cmax_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; - } - 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) { - /* 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; - - default: - break; - } - /* 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>>1]; - if(OPL->wavesel) { - 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(); -} - -/*******************************************************************************/ -/* YM3812 local section */ -/*******************************************************************************/ - -/* ---------- update one of chip ----------- */ -void YM3812UpdateOne(FM_OPL *OPL, int16 *buffer, int length, int interleave) { - int i; - int data; - int16 *buf = buffer; - uint amsCnt = OPL->amsCnt; - uint 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(OPL, S_CH); - /* limit check */ - data = CLIP(outd[0], OPL_MINOUT, OPL_MAXOUT); - /* store to sound buffer */ - buf[i << interleave] = data >> OPL_OUTSB; - } - - OPL->amsCnt = amsCnt; - OPL->vibCnt = vibCnt; -} - -/* ---------- reset a 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 parameter */ - 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; - } - } -} - -/* ---------- Create a virtual 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; - - /* allocate memory block */ - ptr = (char *)calloc(state_size, 1); - 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; - - /* 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; -} - -/* ---------- 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 */ - warning("OPL:read unmapped KEYBOARD port\n"); - return 0; - case 0x19: /* I/O DATA */ - warning("OPL:read unmapped I/O port\n"); - return 0; - case 0x1a: /* PCM-DATA */ - return 0; - default: - break; - } - 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; -} - -FM_OPL *makeAdlibOPL(int rate) { - // We need to emulate one YM3812 chip - int env_bits = FMOPL_ENV_BITS_HQ; - int eg_ent = FMOPL_EG_ENT_HQ; -#if defined (_WIN32_WCE) || defined(__SYMBIAN32__) || defined(PALMOS_MODE) || defined(__GP32__) || defined (GP2X) || defined(__MAEMO__) || defined(__DS__) || defined (__MINT__) - if (ConfMan.hasKey("FM_high_quality") && ConfMan.getBool("FM_high_quality")) { - env_bits = FMOPL_ENV_BITS_HQ; - eg_ent = FMOPL_EG_ENT_HQ; - } else if (ConfMan.hasKey("FM_medium_quality") && ConfMan.getBool("FM_medium_quality")) { - env_bits = FMOPL_ENV_BITS_MQ; - eg_ent = FMOPL_EG_ENT_MQ; - } else { - env_bits = FMOPL_ENV_BITS_LQ; - eg_ent = FMOPL_EG_ENT_LQ; - } -#endif - - OPLBuildTables(env_bits, eg_ent); - return OPLCreate(OPL_TYPE_YM3812, 3579545, rate); -} diff --git a/sound/fmopl.h b/sound/fmopl.h deleted file mode 100644 index 47f21c9956..0000000000 --- a/sound/fmopl.h +++ /dev/null @@ -1,173 +0,0 @@ -/* ScummVM - Graphic Adventure Engine - * - * ScummVM is the legal property of its developers, whose names - * are too numerous to list here. Please refer to the COPYRIGHT - * file distributed with this source distribution. - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version 2 - * of the License, or (at your option) any later version. - - * This program 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 General Public License for more details. - - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - * - * $URL$ - * $Id$ - * - * LGPL licensed version of MAMEs fmopl (V0.37a modified) by - * Tatsuyuki Satoh. Included from LGPL'ed AdPlug. - */ - - -#ifndef SOUND_FMOPL_H -#define SOUND_FMOPL_H - -#include "common/scummsys.h" -#include "common/util.h" - -enum { - FMOPL_ENV_BITS_HQ = 16, - FMOPL_ENV_BITS_MQ = 8, - FMOPL_ENV_BITS_LQ = 8, - FMOPL_EG_ENT_HQ = 4096, - FMOPL_EG_ENT_MQ = 1024, - FMOPL_EG_ENT_LQ = 128 -}; - - -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); - -#define OPL_TYPE_WAVESEL 0x01 /* waveform select */ - -/* Saving is necessary for member of the 'R' mark for suspend/resume */ -/* ---------- OPL one of slot ---------- */ -typedef struct fm_opl_slot { - int TL; /* total level :TL << 8 */ - int TLL; /* adjusted now TL */ - uint8 KSR; /* key scale rate :(shift down bit) */ - int *AR; /* attack rate :&AR_TABLE[AR<<2] */ - int *DR; /* decay rate :&DR_TABLE[DR<<2] */ - int SL; /* sustain level :SL_TABLE[SL] */ - int *RR; /* release rate :&DR_TABLE[RR<<2] */ - uint8 ksl; /* keyscale level :(shift down bits) */ - uint8 ksr; /* key scale rate :kcode>>KSR */ - uint mul; /* multiple :ML_TABLE[ML] */ - uint Cnt; /* frequency count */ - uint Incr; /* frequency step */ - - /* envelope generator state */ - uint8 eg_typ;/* envelope type flag */ - uint8 evm; /* envelope phase */ - int evc; /* envelope counter */ - int eve; /* envelope counter end point */ - int evs; /* envelope counter step */ - int evsa; /* envelope step for AR :AR[ksr] */ - int evsd; /* envelope step for DR :DR[ksr] */ - int evsr; /* envelope step for RR :RR[ksr] */ - - /* LFO */ - uint8 ams; /* ams flag */ - uint8 vib; /* vibrate flag */ - /* wave selector */ - int **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)*/ - int *connect1; /* slot1 output pointer */ - int *connect2; /* slot2 output pointer */ - int op1_out[2]; /* slot1 output for selfeedback */ - - /* phase generator state */ - uint block_fnum; /* block+fnum */ - uint8 kcode; /* key code : KeyScaleCode */ - uint fc; /* Freq. Increment base */ - uint 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 */ - uint 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 */ - - /* time tables */ - int AR_TABLE[76]; /* atttack rate tables */ - int DR_TABLE[76]; /* decay rate tables */ - uint FN_TABLE[1024];/* fnumber -> increment counter */ - - /* LFO */ - int *ams_table; - int *vib_table; - int amsCnt; - int amsIncr; - int vibCnt; - int 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 */ - - Common::RandomSource rnd; -} FM_OPL; - -/* ---------- Generic interface section ---------- */ -#define OPL_TYPE_YM3526 (0) -#define OPL_TYPE_YM3812 (OPL_TYPE_WAVESEL) - -void OPLBuildTables(int ENV_BITS_PARAM, int EG_ENT_PARAM); - -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); - -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); -void OPLWriteReg(FM_OPL *OPL, int r, int v); -void YM3812UpdateOne(FM_OPL *OPL, int16 *buffer, int length, int interleave = 0); - -// Factory method -FM_OPL *makeAdlibOPL(int rate); - -#endif diff --git a/sound/module.mk b/sound/module.mk index bcf101d78e..1d7c2ffc31 100644 --- a/sound/module.mk +++ b/sound/module.mk @@ -7,7 +7,6 @@ MODULE_OBJS := \ audiostream.o \ iff.o \ flac.o \ - fmopl.o \ mididrv.o \ midiparser.o \ midiparser_smf.o \ @@ -30,6 +29,7 @@ MODULE_OBJS := \ mods/rjp1.o \ mods/soundfx.o \ softsynth/adlib.o \ + softsynth/opl/mame.o \ softsynth/ym2612.o \ softsynth/fluidsynth.o \ softsynth/mt32.o \ diff --git a/sound/softsynth/opl/mame.cpp b/sound/softsynth/opl/mame.cpp new file mode 100644 index 0000000000..4834e586c3 --- /dev/null +++ b/sound/softsynth/opl/mame.cpp @@ -0,0 +1,1191 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program 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 General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + * LGPL licensed version of MAMEs fmopl (V0.37a modified) by + * Tatsuyuki Satoh. Included from LGPL'ed AdPlug. + */ + +#include +#include +#include +#include +#include + +#include "sound/fmopl.h" + +#if defined (_WIN32_WCE) || defined (__SYMBIAN32__) || defined(PALMOS_MODE) || defined(__GP32__) || defined(GP2X) || defined (__MAEMO__) || defined(__DS__) || defined (__MINT__) +#include "common/config-manager.h" +#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 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<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 */ + + // WORKAROUND: The Kyra engine does something very strange when + // starting a new song. For each channel: + // + // * The release rate is set to "fastest". + // * Any note is keyed off. + // * A very low-frequency note is keyed on. + // + // Usually, what happens next is that the real notes is keyed + // on immediately, in which case there's no problem. + // + // However, if the note is again keyed off (because the channel + // begins on a rest rather than a note), the envelope counter + // was moved from the very lowest point on the attack curve to + // the very highest point on the release curve. + // + // Again, this might not be a problem, if the release rate is + // still set to "fastest". But in many cases, it had already + // been increased. And, possibly because of inaccuracies in the + // envelope generator, that would cause the note to "fade out" + // for quite a long time. + // + // What we really need is a way to find the correct starting + // point for the envelope counter, and that may be what the + // commented-out line below is meant to do. For now, simply + // handle the pathological case. + + if (SLOT->evm == ENV_MOD_AR && SLOT->evc == EG_AST) + SLOT->evc = EG_DED; + else if( !(SLOT->evc & EG_DST) ) + //SLOT->evc = (ENV_CURVE[SLOT->evc>>ENV_BITS]<evc = EG_DST; + SLOT->eve = EG_DED; + SLOT->evs = SLOT->evsr; + SLOT->evm = ENV_MOD_RR; + } +} + +/* ---------- calcrate Envelope Generator & Phase Generator ---------- */ + +/* return : envelope output */ +inline uint 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) { + int *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>>1]; + 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>>1]; + 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 = (int)((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>>1]; + 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>>1]; + 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)>>(24-SIN_ENT_SHIFT)) & (SIN_ENT-1)][env] +/* ---------- calcrate one of channel ---------- */ +inline void OPL_CALC_CH(OPL_CH *CH) { + uint env_out; + OPL_SLOT *SLOT; + + feedback2 = 0; + /* SLOT 1 */ + SLOT = &CH->SLOT[SLOT1]; + env_out=OPL_CALC_SLOT(SLOT); + if(env_out < (uint)(EG_ENT - 1)) { + /* PG */ + if(SLOT->vib) + SLOT->Cnt += (SLOT->Incr * vib) >> VIB_RATE_SHIFT; + else + SLOT->Cnt += SLOT->Incr; + /* connection */ + 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 < (uint)(EG_ENT - 1)) { + /* PG */ + if(SLOT->vib) + SLOT->Cnt += (SLOT->Incr * vib) >> VIB_RATE_SHIFT; + else + SLOT->Cnt += SLOT->Incr; + /* connection */ + outd[0] += OP_OUT(SLOT, env_out, feedback2); + } +} + +/* ---------- calcrate rythm block ---------- */ +#define WHITE_NOISE_db 6.0 +inline void OPL_CALC_RH(FM_OPL *OPL, OPL_CH *CH) { + uint env_tam, env_sd, env_top, env_hh; + // This code used to do int(OPL->rnd.getRandomBit() * (WHITE_NOISE_db / EG_STEP)), + // but EG_STEP = 96.0/EG_ENT, and WHITE_NOISE_db=6.0. So, that's equivalent to + // int(OPL->rnd.getRandomBit() * EG_ENT/16). We know that EG_ENT is 4096, or 1024, + // or 128, so we can safely avoid any FP ops. + int whitenoise = OPL->rnd.getRandomBit() * (EG_ENT>>4); + + int 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_SHIFT; + else + SLOT->Cnt += SLOT->Incr; + /* connection */ + 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_SHIFT; + else + SLOT->Cnt += SLOT->Incr; + /* connection */ + 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 += (SLOT7_1->Incr * vib) >> (VIB_RATE_SHIFT-1); + else + SLOT7_1->Cnt += 2 * SLOT7_1->Incr; + if(SLOT7_2->vib) + SLOT7_2->Cnt += (CH[7].fc * vib) >> (VIB_RATE_SHIFT-3); + else + SLOT7_2->Cnt += (CH[7].fc * 8); + if(SLOT8_1->vib) + SLOT8_1->Cnt += (SLOT8_1->Incr * vib) >> VIB_RATE_SHIFT; + else + SLOT8_1->Cnt += SLOT8_1->Incr; + if(SLOT8_2->vib) + SLOT8_2->Cnt += ((CH[8].fc * 3) * vib) >> (VIB_RATE_SHIFT-4); + else + SLOT8_2->Cnt += (CH[8].fc * 48); + + tone8 = OP_OUT(SLOT8_2,whitenoise,0 ); + + /* SD */ + if(env_sd < (uint)(EG_ENT - 1)) + outd[0] += OP_OUT(SLOT7_1, env_sd, 0) * 8; + /* TAM */ + if(env_tam < (uint)(EG_ENT - 1)) + outd[0] += OP_OUT(SLOT8_1, env_tam, 0) * 2; + /* TOP-CY */ + if(env_top < (uint)(EG_ENT - 1)) + outd[0] += OP_OUT(SLOT7_2, env_top, tone8) * 2; + /* HH */ + if(env_hh < (uint)(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] = (int)(rate / ARRATE); + OPL->DR_TABLE[i] = (int)(rate / DRRATE); + } + for (i = 60; i < 76; i++) { + OPL->AR_TABLE[i] = EG_AED-1; + OPL->DR_TABLE[i] = OPL->DR_TABLE[60]; + } +} + +/* ---------- generic table initialize ---------- */ +static int OPLOpenTable(void) { + int s,t; + double rate; + int i,j; + double pom; + +#ifdef __DS__ + DS::fastRamReset(); + + TL_TABLE = (int *) DS::fastRamAlloc(TL_MAX * 2 * sizeof(int *)); + SIN_TABLE = (int **) DS::fastRamAlloc(SIN_ENT * 4 * sizeof(int *)); +#else + + /* allocate dynamic tables */ + if((TL_TABLE = (int *)malloc(TL_MAX * 2 * sizeof(int))) == NULL) + return 0; + + if((SIN_TABLE = (int **)malloc(SIN_ENT * 4 * sizeof(int *))) == NULL) { + free(TL_TABLE); + return 0; + } +#endif + + if((AMS_TABLE = (int *)malloc(AMS_ENT * 2 * sizeof(int))) == NULL) { + free(TL_TABLE); + free(SIN_TABLE); + return 0; + } + + if((VIB_TABLE = (int *)malloc(VIB_ENT * 2 * sizeof(int))) == 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(10.0, EG_STEP * t / 20); /* dB -> voltage */ + TL_TABLE[ t] = (int)rate; + TL_TABLE[TL_MAX + 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]; + } + 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]; + } + + + ENV_CURVE = (int *)malloc(sizeof(int) * (2*EG_ENT+1)); + + /* 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] = (int)((1.0 / EG_STEP) * pom); /* 1dB */ + AMS_TABLE[AMS_ENT + i] = (int)((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] = (int)(VIB_RATE + (pom * 0.07)); /* +- 7cent */ + VIB_TABLE[VIB_ENT + i] = (int)(VIB_RATE + (pom * 0.14)); /* +-14cent */ + } + return 1; +} + +static void OPLCloseTable(void) { + free(TL_TABLE); + free(SIN_TABLE); + free(AMS_TABLE); + free(VIB_TABLE); + free(ENV_CURVE); +} + +/* 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] = (uint)(OPL->freqbase * fn * FREQ_RATE * (1<<7) / 2); + } + /* LFO freq.table */ + OPL->amsIncr = (int)(OPL->rate ? (double)AMS_ENT * (1 << AMS_SHIFT) / OPL->rate * 3.7 * ((double)OPL->clock/3600000) : 0); + OPL->vibIncr = (int)(OPL->rate ? (double)VIB_ENT * (1 << VIB_SHIFT) / OPL->rate * 6.4 * ((double)OPL->clock/3600000) : 0); +} + +/* ---------- write a OPL registers ---------- */ +void OPLWriteReg(FM_OPL *OPL, int r, int v) { + OPL_CH *CH; + int slot; + uint 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; cmax_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; + } + 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) { + /* 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; + + default: + break; + } + /* 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>>1]; + if(OPL->wavesel) { + 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(); +} + +/*******************************************************************************/ +/* YM3812 local section */ +/*******************************************************************************/ + +/* ---------- update one of chip ----------- */ +void YM3812UpdateOne(FM_OPL *OPL, int16 *buffer, int length, int interleave) { + int i; + int data; + int16 *buf = buffer; + uint amsCnt = OPL->amsCnt; + uint 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(OPL, S_CH); + /* limit check */ + data = CLIP(outd[0], OPL_MINOUT, OPL_MAXOUT); + /* store to sound buffer */ + buf[i << interleave] = data >> OPL_OUTSB; + } + + OPL->amsCnt = amsCnt; + OPL->vibCnt = vibCnt; +} + +/* ---------- reset a 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 parameter */ + 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; + } + } +} + +/* ---------- Create a virtual 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; + + /* allocate memory block */ + ptr = (char *)calloc(state_size, 1); + 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; + + /* 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; +} + +/* ---------- 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 */ + warning("OPL:read unmapped KEYBOARD port\n"); + return 0; + case 0x19: /* I/O DATA */ + warning("OPL:read unmapped I/O port\n"); + return 0; + case 0x1a: /* PCM-DATA */ + return 0; + default: + break; + } + 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; +} + +FM_OPL *makeAdlibOPL(int rate) { + // We need to emulate one YM3812 chip + int env_bits = FMOPL_ENV_BITS_HQ; + int eg_ent = FMOPL_EG_ENT_HQ; +#if defined (_WIN32_WCE) || defined(__SYMBIAN32__) || defined(PALMOS_MODE) || defined(__GP32__) || defined (GP2X) || defined(__MAEMO__) || defined(__DS__) || defined (__MINT__) + if (ConfMan.hasKey("FM_high_quality") && ConfMan.getBool("FM_high_quality")) { + env_bits = FMOPL_ENV_BITS_HQ; + eg_ent = FMOPL_EG_ENT_HQ; + } else if (ConfMan.hasKey("FM_medium_quality") && ConfMan.getBool("FM_medium_quality")) { + env_bits = FMOPL_ENV_BITS_MQ; + eg_ent = FMOPL_EG_ENT_MQ; + } else { + env_bits = FMOPL_ENV_BITS_LQ; + eg_ent = FMOPL_EG_ENT_LQ; + } +#endif + + OPLBuildTables(env_bits, eg_ent); + return OPLCreate(OPL_TYPE_YM3812, 3579545, rate); +} diff --git a/sound/softsynth/opl/mame.h b/sound/softsynth/opl/mame.h new file mode 100644 index 0000000000..47f21c9956 --- /dev/null +++ b/sound/softsynth/opl/mame.h @@ -0,0 +1,173 @@ +/* ScummVM - Graphic Adventure Engine + * + * ScummVM is the legal property of its developers, whose names + * are too numerous to list here. Please refer to the COPYRIGHT + * file distributed with this source distribution. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + + * This program 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 General Public License for more details. + + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * $URL$ + * $Id$ + * + * LGPL licensed version of MAMEs fmopl (V0.37a modified) by + * Tatsuyuki Satoh. Included from LGPL'ed AdPlug. + */ + + +#ifndef SOUND_FMOPL_H +#define SOUND_FMOPL_H + +#include "common/scummsys.h" +#include "common/util.h" + +enum { + FMOPL_ENV_BITS_HQ = 16, + FMOPL_ENV_BITS_MQ = 8, + FMOPL_ENV_BITS_LQ = 8, + FMOPL_EG_ENT_HQ = 4096, + FMOPL_EG_ENT_MQ = 1024, + FMOPL_EG_ENT_LQ = 128 +}; + + +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); + +#define OPL_TYPE_WAVESEL 0x01 /* waveform select */ + +/* Saving is necessary for member of the 'R' mark for suspend/resume */ +/* ---------- OPL one of slot ---------- */ +typedef struct fm_opl_slot { + int TL; /* total level :TL << 8 */ + int TLL; /* adjusted now TL */ + uint8 KSR; /* key scale rate :(shift down bit) */ + int *AR; /* attack rate :&AR_TABLE[AR<<2] */ + int *DR; /* decay rate :&DR_TABLE[DR<<2] */ + int SL; /* sustain level :SL_TABLE[SL] */ + int *RR; /* release rate :&DR_TABLE[RR<<2] */ + uint8 ksl; /* keyscale level :(shift down bits) */ + uint8 ksr; /* key scale rate :kcode>>KSR */ + uint mul; /* multiple :ML_TABLE[ML] */ + uint Cnt; /* frequency count */ + uint Incr; /* frequency step */ + + /* envelope generator state */ + uint8 eg_typ;/* envelope type flag */ + uint8 evm; /* envelope phase */ + int evc; /* envelope counter */ + int eve; /* envelope counter end point */ + int evs; /* envelope counter step */ + int evsa; /* envelope step for AR :AR[ksr] */ + int evsd; /* envelope step for DR :DR[ksr] */ + int evsr; /* envelope step for RR :RR[ksr] */ + + /* LFO */ + uint8 ams; /* ams flag */ + uint8 vib; /* vibrate flag */ + /* wave selector */ + int **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)*/ + int *connect1; /* slot1 output pointer */ + int *connect2; /* slot2 output pointer */ + int op1_out[2]; /* slot1 output for selfeedback */ + + /* phase generator state */ + uint block_fnum; /* block+fnum */ + uint8 kcode; /* key code : KeyScaleCode */ + uint fc; /* Freq. Increment base */ + uint 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 */ + uint 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 */ + + /* time tables */ + int AR_TABLE[76]; /* atttack rate tables */ + int DR_TABLE[76]; /* decay rate tables */ + uint FN_TABLE[1024];/* fnumber -> increment counter */ + + /* LFO */ + int *ams_table; + int *vib_table; + int amsCnt; + int amsIncr; + int vibCnt; + int 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 */ + + Common::RandomSource rnd; +} FM_OPL; + +/* ---------- Generic interface section ---------- */ +#define OPL_TYPE_YM3526 (0) +#define OPL_TYPE_YM3812 (OPL_TYPE_WAVESEL) + +void OPLBuildTables(int ENV_BITS_PARAM, int EG_ENT_PARAM); + +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); + +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); +void OPLWriteReg(FM_OPL *OPL, int r, int v); +void YM3812UpdateOne(FM_OPL *OPL, int16 *buffer, int length, int interleave = 0); + +// Factory method +FM_OPL *makeAdlibOPL(int rate); + +#endif -- cgit v1.2.3