furnace/src/engine/platform/supervision.cpp
2025-03-23 03:44:06 -05:00

608 lines
18 KiB
C++

/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2025 tildearrow and contributors
*
* 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.
*/
#include "supervision.h"
#include "../engine.h"
#include "../../ta-log.h"
#include "furIcons.h"
#include <math.h>
//#define rWrite(a,v) pendingWrites[a]=v;
#define rWrite(a,v) if (!skipRegisterWrites) {writes.push(QueuedWrite(a,v)); if (dumpWrites) {addWrite(a,v);} }
#define CHIP_DIVIDER 32
const char* regCheatSheetSupervision[]={
"Freq0L", "10",
"Freq0H", "11",
"Control0", "12",
"Len0", "13",
"Freq1L", "14",
"Freq1H", "15",
"Control1", "16",
"Len1", "17",
"DMAstartL", "18",
"DMAstartH", "19",
"DMAlen", "1a",
"DMAstep", "1b",
"DMAon", "1c",
"NoisDiv", "28",
"NoisLen", "29",
"NoisCtrl", "2a",
NULL
};
const char** DivPlatformSupervision::getRegisterSheet() {
return regCheatSheetSupervision;
}
void DivPlatformSupervision::acquire(short** buf, size_t len) {
int mask_bits=0;
for (int i=0; i<4; i++) {
mask_bits |= isMuted[i]?0:8>>i;
}
supervision_set_mute_mask(&svision,mask_bits);
for (int i=0; i<4; i++) {
oscBuf[i]->begin(len);
}
for (size_t h=0; h<len; h++) {
while (!writes.empty()) {
QueuedWrite w=writes.front();
supervision_memorymap_registers_write(&svision,w.addr|0x2000,w.val);
regPool[w.addr&0x3f]=w.val;
writes.pop();
}
unsigned char s[6];
supervision_sound_stream_update(&svision,s,2);
tempL[0]=(((int)s[0])-128)*256;
tempR[0]=(((int)s[1])-128)*256;
for (int i=0; i<4; i++) {
oscBuf[i]->putSample(h,CLAMP(((int)s[2+i])<<8,-32768,32767));
}
tempL[0]=(tempL[0]>>1)+(tempL[0]>>2);
tempR[0]=(tempR[0]>>1)+(tempR[0]>>2);
if (tempL[0]<-32768) tempL[0]=-32768;
if (tempL[0]>32767) tempL[0]=32767;
if (tempR[0]<-32768) tempR[0]=-32768;
if (tempR[0]>32767) tempR[0]=32767;
//printf("tempL: %d tempR: %d\n",tempL,tempR);
buf[0][h]=tempL[0];
buf[1][h]=tempR[0];
}
for (int i=0; i<4; i++) {
oscBuf[i]->end(len);
}
}
void DivPlatformSupervision::tick(bool sysTick) {
for (int i=0; i<4; i++) {
chan[i].std.next();
if (chan[i].std.vol.had) {
chan[i].outVol=VOL_SCALE_LINEAR(chan[i].vol&15,MIN(15,chan[i].std.vol.val),15);
}
if (NEW_ARP_STRAT) {
chan[i].handleArp();
} else if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
int f=parent->calcArp(chan[i].note,chan[i].std.arp.val);
if (i==2 || i==3) {
chan[i].baseFreq=f;
//if (chan[i].baseFreq>255) chan[i].baseFreq=255;
if (chan[i].baseFreq<0) chan[i].baseFreq=0;
} else {
chan[i].baseFreq=NOTE_PERIODIC(f);
}
}
chan[i].freqChanged=true;
}
if (chan[i].std.duty.had) {
chan[i].duty=chan[i].std.duty.val;
}
if (chan[i].std.panL.had) {
chan[i].pan=chan[i].std.panL.val&3;
}
if (chan[i].std.pitch.had) {
if (chan[i].std.pitch.mode) {
chan[i].pitch2+=chan[i].std.pitch.val;
CLAMP_VAR(chan[i].pitch2,-32768,32767);
} else {
chan[i].pitch2=chan[i].std.pitch.val;
}
chan[i].freqChanged=true;
}
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
//DivInstrument* ins=parent->getIns(chan[i].ins,DIV_INS_PCE);
if (i<2) {
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,chan[i].fixedArp?chan[i].baseNoteOverride:chan[i].arpOff,chan[i].fixedArp,true,0,chan[i].pitch2,chipClock<<1,CHIP_DIVIDER);
if (chan[i].freq<1) chan[i].freq=1;
if (chan[i].freq>2047) chan[i].freq=2047;
if (chan[i].freqChanged || chan[i].initWrite) {
rWrite(0x10|(i<<2),chan[i].freq&0xff);
rWrite(0x11|(i<<2),(chan[i].freq>>8)&0x7);
}
chan[i].initWrite=false;
} else if (i==3) {
int ntPos=chan[i].baseFreq;
if (NEW_ARP_STRAT) {
if (chan[i].fixedArp) {
ntPos=chan[i].baseNoteOverride;
} else {
ntPos+=chan[i].arpOff;
}
}
ntPos+=chan[i].pitch2;
chan[i].freq=15-(ntPos&15);
unsigned char r=(chan[i].freq<<4)|(chan[i].outVol&0xf);
rWrite(0x28,r);
noiseReg[0]=r;
rWrite(0x29,0xc8);
r=((chan[i].duty&1)^dutySwap)|(0x02|0x10)|(chan[i].pan<<2);
rWrite(0x2A,r);
}
if (chan[i].keyOn && i==2) {
if (chan[i].pcm) {
int ntPos=chan[i].sampleNote;
ntPos+=chan[i].pitch2;
chan[i].freq=3-(ntPos&3);
int sNum=chan[i].sample;
DivSample* sample=parent->getSample(sNum);
if (sample!=NULL && sNum>=0 && sNum<parent->song.sampleLen) {
unsigned int off=MIN(sampleOff[sNum]+chan[i].hasOffset,sampleOff[sNum]+sampleLen[sNum]);
unsigned int len=MAX((((int)sampleLen[sNum])-((int)chan[i].hasOffset)),0);
if (len) {
rWrite(0x18,off&0xff);
rWrite(0x19,(off>>8&0x3f)|0x80);
rWrite(0x1A,MIN(MAX(len>>4,0),255));
rWrite(0x1B,chan[i].freq|((chan[i].pan&3)<<2)|((off>>14&7)<<4));
rWrite(0x1C,0x80);
}
sampleOffset=chan[i].hasOffset;
chan[i].hasOffset=0;
}
}
}
if (chan[i].keyOff && i==2) {
if (chan[i].pcm) {
int ntPos=chan[i].sampleNote;
ntPos+=chan[i].pitch2;
chan[i].freq=3-(ntPos&3);
int sNum=chan[i].sample;
DivSample* sample=parent->getSample(sNum);
if (sample!=NULL && sNum>=0 && sNum<parent->song.sampleLen) {
rWrite(0x1C,0x00);
}
}
}
if (chan[i].keyOn) chan[i].kon=true;
if (chan[i].keyOff) chan[i].kon=false;
if (chan[i].keyOn) chan[i].keyOn=false;
if (chan[i].keyOff) chan[i].keyOff=false;
chan[i].freqChanged=false;
}
if (chan[i].kon) {
if (i<2) {
rWrite(0x12|(i<<2),(chan[i].outVol&0xf)|((chan[i].duty&3)<<4));
rWrite(0x13|(i<<2),0xc8);
} else if (i == 3) {
int ntPos=chan[i].baseFreq;
if (NEW_ARP_STRAT) {
if (chan[i].fixedArp) {
ntPos=chan[i].baseNoteOverride;
} else {
ntPos+=chan[i].arpOff;
}
}
ntPos+=chan[i].pitch2;
chan[i].freq=15-(ntPos&15);
unsigned char r=(chan[i].freq<<4)|(chan[i].outVol&0xf);
if (noiseReg[0] != r) rWrite(0x28,r);
noiseReg[0]=r;
rWrite(0x29,0xc8);
r=((chan[i].duty&1)^dutySwap)|(0x02|0x10)|(chan[i].pan<<2);
if (noiseReg[2] != r) rWrite(0x2A,r);
noiseReg[2]=r;
} else if (i==2) {
if (chan[i].pcm) {
int ntPos=chan[i].sampleNote;
ntPos+=chan[i].pitch2;
chan[i].freq=3-(ntPos&3);
int sNum=chan[i].sample;
DivSample* sample=parent->getSample(sNum);
if (sample!=NULL && sNum>=0 && sNum<parent->song.sampleLen) {
unsigned int off=MIN(sampleOff[sNum]+sampleOffset,sampleOff[sNum]+sampleLen[sNum]);
unsigned int len=MAX((((int)sampleLen[sNum])-((int)sampleOffset)),0);
if (len) {
rWrite(0x1A,MIN(MAX(len>>4,0),255));
if (chan[i].outVol==0) {
rWrite(0x1B,chan[i].freq|((off>>14&7)<<4));
} else {
rWrite(0x1B,chan[i].freq|((chan[i].pan&3)<<2)|((off>>14&7)<<4));
}
}
}
}
}
} else {
if (i < 2) {
rWrite(0x12|(i<<2),0);
rWrite(0x13|(i<<2),0xc8);
} else if (i == 3) {
rWrite(0x29,0);
unsigned char r=0;
if (noiseReg[2] != r) rWrite(0x2A,r);
noiseReg[2]=r;
}
}
}
}
int DivPlatformSupervision::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_SUPERVISION);
if (ins->type==DIV_INS_AMIGA || ins->amiga.useSample) {
chan[c.chan].pcm=true;
} else {
chan[c.chan].pcm=false;
}
if (chan[c.chan].pcm) {
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].sample=ins->amiga.getSample(c.value);
chan[c.chan].sampleNote=c.value;
if (c.chan==2) {
c.value=ins->amiga.getFreq(c.value);
chan[c.chan].sampleNote=c.value;
}
}
} else {
chan[c.chan].sampleNote=DIV_NOTE_NULL;
chan[c.chan].sampleNoteDelta=0;
}
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=c.chan==3?c.value:NOTE_PERIODIC(c.value);
chan[c.chan].freqChanged=true;
chan[c.chan].note=c.value;
}
chan[c.chan].active=true;
chan[c.chan].keyOn=true;
//chwrite(c.chan,0x04,0x80|chan[c.chan].vol);
chan[c.chan].macroInit(ins);
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
chan[c.chan].outVol=chan[c.chan].vol;
}
chan[c.chan].insChanged=false;
break;
}
case DIV_CMD_NOTE_OFF:
if (dumpWrites) addWrite(0xffff0002+(c.chan<<8),0);
chan[c.chan].active=false;
chan[c.chan].keyOff=true;
chan[c.chan].macroInit(NULL);
break;
case DIV_CMD_NOTE_OFF_ENV:
case DIV_CMD_ENV_RELEASE:
chan[c.chan].std.release();
break;
case DIV_CMD_INSTRUMENT:
if (chan[c.chan].ins!=c.value || c.value2==1) {
chan[c.chan].ins=c.value;
chan[c.chan].insChanged=true;
}
break;
case DIV_CMD_VOLUME:
if (chan[c.chan].vol!=c.value) {
chan[c.chan].vol=c.value;
if (!chan[c.chan].std.vol.has) {
chan[c.chan].outVol=c.value;
if (chan[c.chan].active) {
//chwrite(c.chan,0x04,0x80|chan[c.chan].outVol);
}
}
}
break;
case DIV_CMD_GET_VOLUME:
if (chan[c.chan].std.vol.has) {
return chan[c.chan].vol;
}
return chan[c.chan].outVol;
break;
case DIV_CMD_PITCH:
chan[c.chan].pitch=c.value;
chan[c.chan].freqChanged=true;
break;
case DIV_CMD_NOTE_PORTA: {
int destFreq=NOTE_PERIODIC(c.value2+chan[c.chan].sampleNoteDelta);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value;
if (chan[c.chan].baseFreq>=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
} else {
chan[c.chan].baseFreq-=c.value;
if (chan[c.chan].baseFreq<=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
}
chan[c.chan].freqChanged=true;
if (return2) {
chan[c.chan].inPorta=false;
return 2;
}
break;
}
case DIV_CMD_STD_NOISE_MODE:
chan[c.chan].duty=c.value;
break;
case DIV_CMD_SAMPLE_POS:
chan[c.chan].hasOffset=c.value;
chan[c.chan].keyOn=true;
break;
case DIV_CMD_PANNING: {
chan[c.chan].pan=0;
if (c.value&0xf0) chan[c.chan].pan|=2;
if (c.value2>>4) chan[c.chan].pan|=1;
if (chan[c.chan].pan==0) chan[c.chan].pan=3;
break;
}
case DIV_CMD_LEGATO:
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+chan[c.chan].sampleNoteDelta+((HACKY_LEGATO_MESS)?(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_SUPERVISION));
}
if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will && !NEW_ARP_STRAT) chan[c.chan].baseFreq=NOTE_PERIODIC(chan[c.chan].note);
chan[c.chan].inPorta=c.value;
break;
case DIV_CMD_GET_VOLMAX:
return 15;
break;
case DIV_CMD_MACRO_OFF:
chan[c.chan].std.mask(c.value,true);
break;
case DIV_CMD_MACRO_ON:
chan[c.chan].std.mask(c.value,false);
break;
case DIV_CMD_MACRO_RESTART:
chan[c.chan].std.restart(c.value);
break;
default:
break;
}
return 1;
}
void DivPlatformSupervision::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
}
void DivPlatformSupervision::forceIns() {
for (int i=0; i<4; i++) {
chan[i].insChanged=true;
chan[i].freqChanged=true;
//chwrite(i,0x05,isMuted[i]?0:chan[i].pan);
}
}
void* DivPlatformSupervision::getChanState(int ch) {
return &chan[ch];
}
DivMacroInt* DivPlatformSupervision::getChanMacroInt(int ch) {
return &chan[ch].std;
}
DivDispatchOscBuffer* DivPlatformSupervision::getOscBuffer(int ch) {
return oscBuf[ch];
}
unsigned char* DivPlatformSupervision::getRegisterPool() {
return regPool;
}
int DivPlatformSupervision::getRegisterPoolSize() {
return 64;
}
void DivPlatformSupervision::reset() {
writes.clear();
memset(regPool,0,64);
for (int i=0; i<4; i++) {
chan[i]=DivPlatformSupervision::Channel();
chan[i].std.setEngine(parent);
}
if (dumpWrites) {
addWrite(0xffffffff,0);
}
supervision_sound_reset(&svision);
memset(tempL,0,32*sizeof(int));
memset(tempR,0,32*sizeof(int));
memset(noiseReg,0,3*sizeof(unsigned char));
noiseReg[2]=0xff;
sampleOffset=0;
}
int DivPlatformSupervision::getOutputCount() {
return 2;
}
bool DivPlatformSupervision::keyOffAffectsArp(int ch) {
return true;
}
void DivPlatformSupervision::notifyInsDeletion(void* ins) {
for (int i=0; i<4; i++) {
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
}
}
void DivPlatformSupervision::setFlags(const DivConfig& flags) {
if (flags.getInt("swapDuty",true)) {
dutySwap=1;
} else {
dutySwap=0;
}
otherFlags=0;
if (flags.getInt("sqStereo",false)) {
otherFlags |= 1;
}
chipClock=4000000;
CHECK_CUSTOM_CLOCK;
rate=chipClock/64;
for (int i=0; i<4; i++) {
oscBuf[i]->setRate(rate);
}
supervision_sound_set_clock(&svision,(unsigned int)chipClock);
supervision_sound_set_flags(&svision,(unsigned int)otherFlags);
}
void DivPlatformSupervision::poke(unsigned int addr, unsigned short val) {
rWrite(addr,val);
}
void DivPlatformSupervision::poke(std::vector<DivRegWrite>& wlist) {
for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
}
const void* DivPlatformSupervision::getSampleMem(int index) {
return index==0?sampleMem:NULL;
}
size_t DivPlatformSupervision::getSampleMemCapacity(int index) {
return index==0?65536:0;
}
size_t DivPlatformSupervision::getSampleMemUsage(int index) {
return index==0?sampleMemLen:0;
}
bool DivPlatformSupervision::isSampleLoaded(int index, int sample) {
if (index!=0) return false;
if (sample<0 || sample>255) return false;
return sampleLoaded[sample];
}
const DivMemoryComposition* DivPlatformSupervision::getMemCompo(int index) {
if (index!=0) return NULL;
return &memCompo;
}
void DivPlatformSupervision::renderSamples(int sysID) {
memset(sampleMem,0,getSampleMemCapacity(0));
memset(sampleLoaded,0,256*sizeof(bool));
memCompo=DivMemoryComposition();
memCompo.name="Sample Memory";
size_t memPos=0;
for (int i=0; i<parent->song.sampleLen; i++) {
DivSample* s=parent->song.sample[i];
if (!s->renderOn[0][sysID]) {
sampleOff[i]=0;
continue;
}
unsigned int paddedLen=((s->length8>>1)+31)&(~0x1f);
logV("%d padded length: %d",i,paddedLen);
if (paddedLen>=4096) {
paddedLen=4096;
}
if ((memPos&(~0x3fff))!=((memPos+paddedLen)&(~0x3fff))) {
memPos=(memPos+0x3fff)&(~0x3fff);
}
if (memPos>=getSampleMemCapacity(0)) {
logW("out of memory for sample %d!",i);
break;
}
if (memPos+paddedLen>=getSampleMemCapacity(0)) {
sampleLen[i]=(getSampleMemCapacity(0)-memPos)>>1;
for (size_t i=0; i<(getSampleMemCapacity(0)-memPos)>>1; i++) {
sampleMem[memPos+i]=(((s->data8[i*2+0]+128)>>4)<<4&0xf0)|(((s->data8[i*2+1]+128)>>4)&0xf);
}
logW("out of memory for sample %d!",i);
} else {
size_t len=MIN((s->length8>>1),paddedLen);
sampleLen[i]=(unsigned int)(len);
for (size_t i=0; i<len; i++) {
sampleMem[memPos+i]=(((s->data8[i*2+0]+128)>>4)<<4&0xf0)|(((s->data8[i*2+1]+128)>>4)&0xf);
}
sampleLoaded[i]=true;
}
sampleOff[i]=memPos;
memCompo.entries.push_back(DivMemoryEntry(DIV_MEMORY_SAMPLE,"Sample",i,memPos,memPos+paddedLen));
memPos+=paddedLen;
}
sampleMemLen=memPos;
memCompo.capacity=65536;
memCompo.used=sampleMemLen;
}
bool DivPlatformSupervision::getDCOffRequired() {
return true;
}
int DivPlatformSupervision::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
parent=p;
dumpWrites=false;
skipRegisterWrites=false;
for (int i=0; i<4; i++) {
isMuted[i]=false;
oscBuf[i]=new DivDispatchOscBuffer;
}
sampleMem=svision.supervision_dma_mem;
dutySwap=0;
otherFlags=0;
sampleOffset=0;
sampleMemLen=0;
memset(sampleMem,0,65536);
svision.ch_mask=15;
svision.flags=1;
setFlags(flags);
reset();
return 4;
}
void DivPlatformSupervision::quit() {
for (int i=0; i<4; i++) {
delete oscBuf[i];
}
}
DivPlatformSupervision::~DivPlatformSupervision() {
}