613 lines
18 KiB
C++
613 lines
18 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2022 tildearrow and contributors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "pce.h"
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#include "../engine.h"
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#include <math.h>
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//#define rWrite(a,v) pendingWrites[a]=v;
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#define rWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
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#define chWrite(c,a,v) \
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if (!skipRegisterWrites) { \
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if (curChan!=c) { \
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curChan=c; \
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rWrite(0,curChan); \
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} \
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regPool[16+((c)<<4)+((a)&0x0f)]=v; \
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rWrite(a,v); \
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}
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#define CHIP_DIVIDER 32
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const char* regCheatSheetPCE[]={
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"Select", "0",
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"MasterVol", "1",
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"FreqL", "2",
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"FreqH", "3",
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"DataCtl", "4",
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"ChanVol", "5",
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"WaveCtl", "6",
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"NoiseCtl", "7",
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"LFOFreq", "8",
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"LFOCtl", "9",
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NULL
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};
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const char** DivPlatformPCE::getRegisterSheet() {
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return regCheatSheetPCE;
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}
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void DivPlatformPCE::acquire(short* bufL, short* bufR, size_t start, size_t len) {
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for (size_t h=start; h<start+len; h++) {
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// PCM part
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for (int i=0; i<6; i++) {
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if (chan[i].pcm && chan[i].dacSample!=-1) {
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chan[i].dacPeriod+=chan[i].dacRate;
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if (chan[i].dacPeriod>rate) {
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DivSample* s=parent->getSample(chan[i].dacSample);
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if (s->samples<=0) {
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chan[i].dacSample=-1;
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continue;
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}
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chWrite(i,0x07,0);
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signed char dacData=((signed char)((unsigned char)s->data8[chan[i].dacPos]^0x80))>>3;
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chan[i].dacOut=CLAMP(dacData,-16,15);
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if (!isMuted[i]) {
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chWrite(i,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[i].outVol));
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chWrite(i,0x06,chan[i].dacOut&0x1f);
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} else {
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chWrite(i,0x04,0xc0);
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chWrite(i,0x06,0x10);
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}
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chan[i].dacPos++;
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if (s->isLoopable() && chan[i].dacPos>=(unsigned int)s->loopEnd) {
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chan[i].dacPos=s->loopStart;
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} else if (chan[i].dacPos>=s->samples) {
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chan[i].dacSample=-1;
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}
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chan[i].dacPeriod-=rate;
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}
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}
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}
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// PCE part
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cycles=0;
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while (!writes.empty() && cycles<24) {
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QueuedWrite w=writes.front();
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pce->Write(cycles,w.addr,w.val);
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regPool[w.addr&0x0f]=w.val;
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//cycles+=2;
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writes.pop();
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}
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memset(tempL,0,24*sizeof(int));
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memset(tempR,0,24*sizeof(int));
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pce->Update(24);
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pce->ResetTS(0);
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for (int i=0; i<6; i++) {
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oscBuf[i]->data[oscBuf[i]->needle++]=CLAMP((pce->channel[i].blip_prev_samp[0]+pce->channel[i].blip_prev_samp[1])<<1,-32768,32767);
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}
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tempL[0]=(tempL[0]>>1)+(tempL[0]>>2);
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tempR[0]=(tempR[0]>>1)+(tempR[0]>>2);
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if (tempL[0]<-32768) tempL[0]=-32768;
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if (tempL[0]>32767) tempL[0]=32767;
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if (tempR[0]<-32768) tempR[0]=-32768;
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if (tempR[0]>32767) tempR[0]=32767;
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//printf("tempL: %d tempR: %d\n",tempL,tempR);
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bufL[h]=tempL[0];
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bufR[h]=tempR[0];
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}
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}
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void DivPlatformPCE::updateWave(int ch) {
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if (chan[ch].pcm) {
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chan[ch].deferredWaveUpdate=true;
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return;
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}
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chWrite(ch,0x04,0x5f);
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chWrite(ch,0x04,0x1f);
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for (int i=0; i<32; i++) {
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chWrite(ch,0x06,chan[ch].ws.output[(i+chan[ch].antiClickWavePos)&31]);
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}
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chan[ch].antiClickWavePos&=31;
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if (chan[ch].active) {
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chWrite(ch,0x04,0x80|chan[ch].outVol);
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}
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if (chan[ch].deferredWaveUpdate) {
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chan[ch].deferredWaveUpdate=false;
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}
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}
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// TODO: in octave 6 the noise table changes to a tonal one
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static unsigned char noiseFreq[12]={
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4,13,15,18,21,23,25,27,29,31,0,2
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};
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void DivPlatformPCE::tick(bool sysTick) {
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for (int i=0; i<6; i++) {
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// anti-click
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if (antiClickEnabled && sysTick && chan[i].freq>0) {
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chan[i].antiClickPeriodCount+=(chipClock/MAX(parent->getCurHz(),1.0f));
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chan[i].antiClickWavePos+=chan[i].antiClickPeriodCount/chan[i].freq;
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chan[i].antiClickPeriodCount%=chan[i].freq;
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}
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chan[i].std.next();
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if (chan[i].std.vol.had) {
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chan[i].outVol=VOL_SCALE_LOG_BROKEN(chan[i].vol&31,MIN(31,chan[i].std.vol.val),31);
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if (chan[i].furnaceDac && chan[i].pcm) {
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// ignore for now
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} else {
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chWrite(i,0x04,0x80|chan[i].outVol);
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}
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}
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if (chan[i].std.duty.had && i>=4) {
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chan[i].noise=chan[i].std.duty.val;
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chan[i].freqChanged=true;
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int noiseSeek=chan[i].note;
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if (noiseSeek<0) noiseSeek=0;
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chWrite(i,0x07,chan[i].noise?(0x80|(parent->song.properNoiseLayout?(noiseSeek&31):noiseFreq[noiseSeek%12])):0);
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}
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if (chan[i].std.arp.had) {
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if (!chan[i].inPorta) {
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int noiseSeek=parent->calcArp(chan[i].note,chan[i].std.arp.val);
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chan[i].baseFreq=NOTE_PERIODIC(noiseSeek);
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if (noiseSeek<0) noiseSeek=0;
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chWrite(i,0x07,chan[i].noise?(0x80|(parent->song.properNoiseLayout?(noiseSeek&31):noiseFreq[noiseSeek%12])):0);
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}
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chan[i].freqChanged=true;
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}
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if (chan[i].std.wave.had && !chan[i].pcm) {
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if (chan[i].wave!=chan[i].std.wave.val || chan[i].ws.activeChanged()) {
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chan[i].wave=chan[i].std.wave.val;
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chan[i].ws.changeWave1(chan[i].wave);
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if (!chan[i].keyOff) chan[i].keyOn=true;
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}
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}
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if (chan[i].std.panL.had) {
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chan[i].pan&=0x0f;
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chan[i].pan|=(chan[i].std.panL.val&15)<<4;
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}
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if (chan[i].std.panR.had) {
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chan[i].pan&=0xf0;
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chan[i].pan|=chan[i].std.panR.val&15;
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}
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if (chan[i].std.panL.had || chan[i].std.panR.had) {
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chWrite(i,0x05,isMuted[i]?0:chan[i].pan);
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}
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if (chan[i].std.pitch.had) {
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if (chan[i].std.pitch.mode) {
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chan[i].pitch2+=chan[i].std.pitch.val;
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CLAMP_VAR(chan[i].pitch2,-32768,32767);
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} else {
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chan[i].pitch2=chan[i].std.pitch.val;
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}
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chan[i].freqChanged=true;
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}
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if (chan[i].std.phaseReset.had && chan[i].std.phaseReset.val==1) {
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if (chan[i].furnaceDac && chan[i].pcm) {
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if (chan[i].active && chan[i].dacSample>=0 && chan[i].dacSample<parent->song.sampleLen) {
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chan[i].dacPos=0;
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chan[i].dacPeriod=0;
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chWrite(i,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[i].vol));
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addWrite(0xffff0000+(i<<8),chan[i].dacSample);
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chan[i].keyOn=true;
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}
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}
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chan[i].antiClickWavePos=0;
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chan[i].antiClickPeriodCount=0;
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}
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if (chan[i].active) {
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if (chan[i].ws.tick() || (chan[i].std.phaseReset.had && chan[i].std.phaseReset.val==1) || chan[i].deferredWaveUpdate) {
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updateWave(i);
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}
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}
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if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
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//DivInstrument* ins=parent->getIns(chan[i].ins,DIV_INS_PCE);
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chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true,0,chan[i].pitch2,chipClock,CHIP_DIVIDER);
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if (chan[i].furnaceDac && chan[i].pcm) {
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double off=1.0;
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if (chan[i].dacSample>=0 && chan[i].dacSample<parent->song.sampleLen) {
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DivSample* s=parent->getSample(chan[i].dacSample);
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if (s->centerRate<1) {
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off=1.0;
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} else {
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off=8363.0/(double)s->centerRate;
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}
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}
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chan[i].dacRate=((double)chipClock/2)/MAX(1,off*chan[i].freq);
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if (dumpWrites) addWrite(0xffff0001+(i<<8),chan[i].dacRate);
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}
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if (chan[i].freq>4095) chan[i].freq=4095;
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chWrite(i,0x02,chan[i].freq&0xff);
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chWrite(i,0x03,chan[i].freq>>8);
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if (chan[i].keyOn) {
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//rWrite(16+i*5,0x80);
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//chWrite(i,0x04,0x80|chan[i].vol);
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}
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if (chan[i].keyOff) {
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chWrite(i,0x04,0);
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}
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if (chan[i].keyOn) chan[i].keyOn=false;
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if (chan[i].keyOff) chan[i].keyOff=false;
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chan[i].freqChanged=false;
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}
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}
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}
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int DivPlatformPCE::dispatch(DivCommand c) {
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switch (c.cmd) {
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case DIV_CMD_NOTE_ON: {
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DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_PCE);
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chan[c.chan].macroVolMul=ins->type==DIV_INS_AMIGA?64:31;
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if (ins->type==DIV_INS_AMIGA || ins->amiga.useSample) {
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chan[c.chan].pcm=true;
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} else if (chan[c.chan].furnaceDac) {
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chan[c.chan].pcm=false;
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}
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if (chan[c.chan].pcm) {
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if (ins->type==DIV_INS_AMIGA || ins->amiga.useSample) {
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chan[c.chan].furnaceDac=true;
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if (skipRegisterWrites) break;
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chan[c.chan].dacSample=ins->amiga.getSample(c.value);
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if (chan[c.chan].dacSample<0 || chan[c.chan].dacSample>=parent->song.sampleLen) {
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chan[c.chan].dacSample=-1;
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if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
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break;
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} else {
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if (dumpWrites) {
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chWrite(c.chan,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[c.chan].vol));
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addWrite(0xffff0000+(c.chan<<8),chan[c.chan].dacSample);
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}
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}
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chan[c.chan].dacPos=0;
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chan[c.chan].dacPeriod=0;
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
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chan[c.chan].freqChanged=true;
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chan[c.chan].note=c.value;
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}
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chan[c.chan].active=true;
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chan[c.chan].macroInit(ins);
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if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
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chan[c.chan].outVol=chan[c.chan].vol;
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}
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//chan[c.chan].keyOn=true;
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} else {
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chan[c.chan].furnaceDac=false;
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if (skipRegisterWrites) break;
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].note=c.value;
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}
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chan[c.chan].dacSample=12*sampleBank+chan[c.chan].note%12;
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if (chan[c.chan].dacSample>=parent->song.sampleLen) {
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chan[c.chan].dacSample=-1;
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if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
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break;
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} else {
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if (dumpWrites) addWrite(0xffff0000+(c.chan<<8),chan[c.chan].dacSample);
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}
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chan[c.chan].dacPos=0;
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chan[c.chan].dacPeriod=0;
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chan[c.chan].dacRate=parent->getSample(chan[c.chan].dacSample)->rate;
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if (dumpWrites) {
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chWrite(c.chan,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[c.chan].vol));
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addWrite(0xffff0001+(c.chan<<8),chan[c.chan].dacRate);
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}
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}
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break;
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}
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
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chan[c.chan].freqChanged=true;
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chan[c.chan].note=c.value;
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int noiseSeek=chan[c.chan].note;
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if (noiseSeek<0) noiseSeek=0;
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chWrite(c.chan,0x07,chan[c.chan].noise?(0x80|(parent->song.properNoiseLayout?(noiseSeek&31):noiseFreq[noiseSeek%12])):0);
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}
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chan[c.chan].active=true;
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chan[c.chan].keyOn=true;
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chWrite(c.chan,0x04,0x80|chan[c.chan].vol);
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chan[c.chan].macroInit(ins);
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if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
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chan[c.chan].outVol=chan[c.chan].vol;
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}
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if (chan[c.chan].wave<0) {
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chan[c.chan].wave=0;
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chan[c.chan].ws.changeWave1(chan[c.chan].wave);
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}
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chan[c.chan].ws.init(ins,32,31,chan[c.chan].insChanged);
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chan[c.chan].insChanged=false;
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break;
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}
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case DIV_CMD_NOTE_OFF:
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chan[c.chan].dacSample=-1;
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if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
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chan[c.chan].pcm=false;
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chan[c.chan].active=false;
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chan[c.chan].keyOff=true;
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chan[c.chan].macroInit(NULL);
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break;
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case DIV_CMD_NOTE_OFF_ENV:
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case DIV_CMD_ENV_RELEASE:
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chan[c.chan].std.release();
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break;
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case DIV_CMD_INSTRUMENT:
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if (chan[c.chan].ins!=c.value || c.value2==1) {
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chan[c.chan].ins=c.value;
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chan[c.chan].insChanged=true;
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}
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break;
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case DIV_CMD_VOLUME:
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if (chan[c.chan].vol!=c.value) {
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chan[c.chan].vol=c.value;
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if (!chan[c.chan].std.vol.has) {
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chan[c.chan].outVol=c.value;
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if (chan[c.chan].active && !chan[c.chan].pcm) {
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chWrite(c.chan,0x04,0x80|chan[c.chan].outVol);
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}
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}
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}
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break;
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case DIV_CMD_GET_VOLUME:
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if (chan[c.chan].std.vol.has) {
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return chan[c.chan].vol;
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}
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return chan[c.chan].outVol;
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break;
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case DIV_CMD_PITCH:
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chan[c.chan].pitch=c.value;
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chan[c.chan].freqChanged=true;
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break;
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case DIV_CMD_WAVE:
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chan[c.chan].wave=c.value;
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chan[c.chan].ws.changeWave1(chan[c.chan].wave);
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chan[c.chan].keyOn=true;
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break;
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case DIV_CMD_PCE_LFO_MODE:
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if (c.value==0) {
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lfoMode=0;
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} else {
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lfoMode=c.value;
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}
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rWrite(0x08,lfoSpeed);
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rWrite(0x09,lfoMode);
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break;
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case DIV_CMD_PCE_LFO_SPEED:
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lfoSpeed=255-c.value;
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rWrite(0x08,lfoSpeed);
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rWrite(0x09,lfoMode);
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break;
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case DIV_CMD_NOTE_PORTA: {
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int destFreq=NOTE_PERIODIC(c.value2);
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bool return2=false;
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if (destFreq>chan[c.chan].baseFreq) {
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chan[c.chan].baseFreq+=c.value;
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if (chan[c.chan].baseFreq>=destFreq) {
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chan[c.chan].baseFreq=destFreq;
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return2=true;
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}
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} else {
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chan[c.chan].baseFreq-=c.value;
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if (chan[c.chan].baseFreq<=destFreq) {
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chan[c.chan].baseFreq=destFreq;
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return2=true;
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}
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}
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chan[c.chan].freqChanged=true;
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if (return2) {
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chan[c.chan].inPorta=false;
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return 2;
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}
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break;
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}
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case DIV_CMD_STD_NOISE_MODE:
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chan[c.chan].noise=c.value;
|
|
chWrite(c.chan,0x07,chan[c.chan].noise?(0x80|chan[c.chan].note):0);
|
|
break;
|
|
case DIV_CMD_SAMPLE_MODE:
|
|
chan[c.chan].pcm=c.value;
|
|
break;
|
|
case DIV_CMD_SAMPLE_BANK:
|
|
sampleBank=c.value;
|
|
if (sampleBank>(parent->song.sample.size()/12)) {
|
|
sampleBank=parent->song.sample.size()/12;
|
|
}
|
|
break;
|
|
case DIV_CMD_PANNING: {
|
|
chan[c.chan].pan=(c.value&0xf0)|(c.value2>>4);
|
|
chWrite(c.chan,0x05,isMuted[c.chan]?0:chan[c.chan].pan);
|
|
break;
|
|
}
|
|
case DIV_CMD_LEGATO:
|
|
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+((chan[c.chan].std.arp.will && !chan[c.chan].std.arp.mode)?(chan[c.chan].std.arp.val):(0)));
|
|
chan[c.chan].freqChanged=true;
|
|
chan[c.chan].note=c.value;
|
|
break;
|
|
case DIV_CMD_PRE_PORTA:
|
|
if (chan[c.chan].active && c.value2) {
|
|
if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_PCE));
|
|
}
|
|
if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
|
|
chan[c.chan].inPorta=c.value;
|
|
break;
|
|
case DIV_CMD_GET_VOLMAX:
|
|
return 31;
|
|
break;
|
|
case DIV_ALWAYS_SET_VOLUME:
|
|
return 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void DivPlatformPCE::muteChannel(int ch, bool mute) {
|
|
isMuted[ch]=mute;
|
|
chWrite(ch,0x05,isMuted[ch]?0:chan[ch].pan);
|
|
if (!isMuted[ch] && (chan[ch].pcm && chan[ch].dacSample!=-1)) {
|
|
chWrite(ch,0x04,parent->song.disableSampleMacro?0xdf:(0xc0|chan[ch].outVol));
|
|
chWrite(ch,0x06,chan[ch].dacOut&0x1f);
|
|
}
|
|
}
|
|
|
|
void DivPlatformPCE::forceIns() {
|
|
for (int i=0; i<6; i++) {
|
|
chan[i].insChanged=true;
|
|
chan[i].freqChanged=true;
|
|
updateWave(i);
|
|
chWrite(i,0x05,isMuted[i]?0:chan[i].pan);
|
|
}
|
|
}
|
|
|
|
void* DivPlatformPCE::getChanState(int ch) {
|
|
return &chan[ch];
|
|
}
|
|
|
|
DivMacroInt* DivPlatformPCE::getChanMacroInt(int ch) {
|
|
return &chan[ch].std;
|
|
}
|
|
|
|
DivDispatchOscBuffer* DivPlatformPCE::getOscBuffer(int ch) {
|
|
return oscBuf[ch];
|
|
}
|
|
|
|
unsigned char* DivPlatformPCE::getRegisterPool() {
|
|
return regPool;
|
|
}
|
|
|
|
int DivPlatformPCE::getRegisterPoolSize() {
|
|
return 112;
|
|
}
|
|
|
|
void DivPlatformPCE::reset() {
|
|
while (!writes.empty()) writes.pop();
|
|
memset(regPool,0,128);
|
|
for (int i=0; i<6; i++) {
|
|
chan[i]=DivPlatformPCE::Channel();
|
|
chan[i].std.setEngine(parent);
|
|
chan[i].ws.setEngine(parent);
|
|
chan[i].ws.init(NULL,32,31,false);
|
|
}
|
|
if (dumpWrites) {
|
|
addWrite(0xffffffff,0);
|
|
}
|
|
pce->Power(0);
|
|
lastPan=0xff;
|
|
memset(tempL,0,32*sizeof(int));
|
|
memset(tempR,0,32*sizeof(int));
|
|
cycles=0;
|
|
curChan=-1;
|
|
sampleBank=0;
|
|
lfoMode=0;
|
|
lfoSpeed=255;
|
|
// set global volume
|
|
rWrite(0,0);
|
|
rWrite(0x01,0xff);
|
|
// set LFO
|
|
rWrite(0x08,lfoSpeed);
|
|
rWrite(0x09,lfoMode);
|
|
// set per-channel initial panning
|
|
for (int i=0; i<6; i++) {
|
|
chWrite(i,0x05,isMuted[i]?0:chan[i].pan);
|
|
}
|
|
delay=500;
|
|
}
|
|
|
|
bool DivPlatformPCE::isStereo() {
|
|
return true;
|
|
}
|
|
|
|
bool DivPlatformPCE::keyOffAffectsArp(int ch) {
|
|
return true;
|
|
}
|
|
|
|
void DivPlatformPCE::notifyWaveChange(int wave) {
|
|
for (int i=0; i<6; i++) {
|
|
if (chan[i].wave==wave) {
|
|
chan[i].ws.changeWave1(wave);
|
|
updateWave(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
void DivPlatformPCE::notifyInsDeletion(void* ins) {
|
|
for (int i=0; i<6; i++) {
|
|
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
|
|
}
|
|
}
|
|
|
|
void DivPlatformPCE::setFlags(const DivConfig& flags) {
|
|
if (flags.getInt("clockSel",0)) { // technically there is no PAL PC Engine but oh well...
|
|
chipClock=COLOR_PAL*4.0/5.0;
|
|
} else {
|
|
chipClock=COLOR_NTSC;
|
|
}
|
|
antiClickEnabled=!flags.getBool("noAntiClick",false);
|
|
rate=chipClock/12;
|
|
for (int i=0; i<6; i++) {
|
|
oscBuf[i]->rate=rate;
|
|
}
|
|
|
|
if (pce!=NULL) {
|
|
delete pce;
|
|
pce=NULL;
|
|
}
|
|
pce=new PCE_PSG(tempL,tempR,flags.getInt("chipType",0)?PCE_PSG::REVISION_HUC6280A:PCE_PSG::REVISION_HUC6280);
|
|
}
|
|
|
|
void DivPlatformPCE::poke(unsigned int addr, unsigned short val) {
|
|
rWrite(addr,val);
|
|
}
|
|
|
|
void DivPlatformPCE::poke(std::vector<DivRegWrite>& wlist) {
|
|
for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
|
|
}
|
|
|
|
int DivPlatformPCE::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
|
|
parent=p;
|
|
dumpWrites=false;
|
|
skipRegisterWrites=false;
|
|
for (int i=0; i<6; i++) {
|
|
isMuted[i]=false;
|
|
oscBuf[i]=new DivDispatchOscBuffer;
|
|
}
|
|
pce=NULL;
|
|
setFlags(flags);
|
|
reset();
|
|
return 6;
|
|
}
|
|
|
|
void DivPlatformPCE::quit() {
|
|
for (int i=0; i<6; i++) {
|
|
delete oscBuf[i];
|
|
}
|
|
if (pce!=NULL) {
|
|
delete pce;
|
|
pce=NULL;
|
|
}
|
|
}
|
|
|
|
DivPlatformPCE::~DivPlatformPCE() {
|
|
}
|