mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-18 02:25:11 +00:00
549 lines
15 KiB
C++
549 lines
15 KiB
C++
/**
|
|
* Furnace Tracker - multi-system chiptune tracker
|
|
* Copyright (C) 2021-2022 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 "k007232.h"
|
|
#include "../engine.h"
|
|
#include "../../ta-log.h"
|
|
#include <math.h>
|
|
|
|
#define rWrite(a,v) {if(!skipRegisterWrites) {writes.emplace(a,v); if(dumpWrites) addWrite(a,v);}}
|
|
|
|
#define CHIP_DIVIDER 64
|
|
|
|
const char* regCheatSheetK007232[]={
|
|
// on-chip
|
|
"CHX_FreqL", "X*6+0",
|
|
"CHX_FreqH", "X*6+1",
|
|
"CHX_StartL", "X*6+2",
|
|
"CHX_StartM", "X*6+3",
|
|
"CHX_StartH", "X*6+4",
|
|
"CHX_Keyon", "X*6+5",
|
|
"SLEV", "C", // external IO
|
|
"Loop", "D",
|
|
// off-chip
|
|
"CHX_Volume", "X*2+10",
|
|
"CHX_Bank", "X*2+12",
|
|
NULL
|
|
};
|
|
|
|
const char** DivPlatformK007232::getRegisterSheet() {
|
|
return regCheatSheetK007232;
|
|
}
|
|
|
|
inline void DivPlatformK007232::chWrite(unsigned char ch, unsigned int addr, unsigned char val) {
|
|
if (!skipRegisterWrites) {
|
|
if ((ch<2) && (addr<6)) {
|
|
rWrite((ch*6)+(addr&7),val);
|
|
}
|
|
}
|
|
}
|
|
|
|
void DivPlatformK007232::acquire(short* bufL, short* bufR, size_t start, size_t len) {
|
|
for (size_t h=start; h<start+len; h++) {
|
|
if ((--delay)<=0) {
|
|
delay=MAX(0,delay);
|
|
if (!writes.empty()) {
|
|
QueuedWrite& w=writes.front();
|
|
// write on-chip register
|
|
if (w.addr<=0xd) {
|
|
k007232.write(w.addr,w.val);
|
|
}
|
|
regPool[w.addr]=w.val;
|
|
writes.pop();
|
|
delay=w.delay;
|
|
}
|
|
}
|
|
|
|
k007232.tick();
|
|
|
|
if (stereo) {
|
|
const unsigned char vol1=regPool[0x10],vol2=regPool[0x11];
|
|
const signed int lout[2]={(k007232.output(0)*(vol1&0xf)),(k007232.output(1)*(vol2&0xf))};
|
|
const signed int rout[2]={(k007232.output(0)*((vol1>>4)&0xf)),(k007232.output(1)*((vol2>>4)&0xf))};
|
|
bufL[h]=(lout[0]+lout[1])<<4;
|
|
bufR[h]=(rout[0]+rout[1])<<4;
|
|
for (int i=0; i<2; i++) {
|
|
oscBuf[i]->data[oscBuf[i]->needle++]=(lout[i]+rout[i])<<4;
|
|
}
|
|
} else {
|
|
const unsigned char vol=regPool[0xc];
|
|
const signed int out[2]={(k007232.output(0)*(vol&0xf)),(k007232.output(1)*((vol>>4)&0xf))};
|
|
bufL[h]=bufR[h]=(out[0]+out[1])<<4;
|
|
for (int i=0; i<2; i++) {
|
|
oscBuf[i]->data[oscBuf[i]->needle++]=out[i]<<5;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
u8 DivPlatformK007232::read_sample(u8 ne, u32 address) {
|
|
if ((sampleMem!=NULL) && (address<getSampleMemCapacity())) {
|
|
return sampleMem[((regPool[0x12+(ne&1)]<<17)|(address&0x1ffff))&0xffffff];
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void DivPlatformK007232::tick(bool sysTick) {
|
|
for (int i=0; i<2; i++) {
|
|
chan[i].std.next();
|
|
if (chan[i].std.vol.had) {
|
|
signed char macroVol=((chan[i].vol&0xf)*MIN(chan[i].macroVolMul,chan[i].std.vol.val))/chan[i].macroVolMul;
|
|
if ((!isMuted[i]) && (macroVol!=chan[i].outVol)) {
|
|
chan[i].outVol=macroVol;
|
|
chan[i].volumeChanged=true;
|
|
}
|
|
}
|
|
if (chan[i].std.arp.had) {
|
|
if (!chan[i].inPorta) {
|
|
chan[i].baseFreq=NOTE_PERIODIC(parent->calcArp(chan[i].note,chan[i].std.arp.val));
|
|
}
|
|
chan[i].freqChanged=true;
|
|
}
|
|
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;
|
|
}
|
|
// volume and panning registers are off-chip
|
|
if (chan[i].std.panL.had) {
|
|
chan[i].panning&=0xf0;
|
|
chan[i].panning|=chan[i].std.panL.val&15;
|
|
if (!isMuted[i] && stereo) {
|
|
chan[i].volumeChanged=true;
|
|
}
|
|
}
|
|
if (chan[i].std.panR.had) {
|
|
chan[i].panning&=0x0f;
|
|
chan[i].panning|=(chan[i].std.panR.val&15)<<4;
|
|
if (!isMuted[i] && stereo) {
|
|
chan[i].volumeChanged=true;
|
|
}
|
|
}
|
|
if (chan[i].std.phaseReset.had) {
|
|
if (chan[i].std.phaseReset.val==1 && chan[i].active) {
|
|
chan[i].audPos=0;
|
|
chan[i].setPos=true;
|
|
}
|
|
}
|
|
if (chan[i].volumeChanged) {
|
|
if (stereo) {
|
|
chan[i].lvol=isMuted[i]?0:(((chan[i].outVol&0xf)*((chan[i].panning>>0)&0xf))/15);
|
|
chan[i].rvol=isMuted[i]?0:(((chan[i].outVol&0xf)*((chan[i].panning>>4)&0xf))/15);
|
|
rWrite(0x10+i,(chan[i].lvol&0xf)|((chan[i].rvol&0xf)<<4));
|
|
}
|
|
else {
|
|
chan[i].lvol=chan[i].rvol=isMuted[i]?0:chan[i].outVol&0xf;
|
|
lastVolume=(lastVolume&~(0xf<<(i<<2)))|((chan[i].outVol&0xf)<<(i<<2));
|
|
rWrite(0xc,lastVolume);
|
|
}
|
|
chan[i].volumeChanged=false;
|
|
}
|
|
if (chan[i].setPos) {
|
|
// force keyon
|
|
chan[i].keyOn=true;
|
|
chan[i].setPos=false;
|
|
} else {
|
|
chan[i].audPos=0;
|
|
}
|
|
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
|
|
double off=1.0;
|
|
int sample=chan[i].sample;
|
|
if (sample>=0 && sample<parent->song.sampleLen) {
|
|
DivSample* s=parent->getSample(sample);
|
|
if (s->centerRate<1) {
|
|
off=1.0;
|
|
} else {
|
|
off=8363.0/s->centerRate;
|
|
}
|
|
}
|
|
DivSample* s=parent->getSample(chan[i].sample);
|
|
chan[i].freq=0x1000-(int)(off*parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true,0,chan[i].pitch2,chipClock,CHIP_DIVIDER));
|
|
if (chan[i].freq>4095) chan[i].freq=4095;
|
|
if (chan[i].freq<0) chan[i].freq=0;
|
|
if (chan[i].keyOn) {
|
|
unsigned int bank=0;
|
|
unsigned int start=0;
|
|
unsigned int loop=0;
|
|
if (chan[i].sample>=0 && chan[i].sample<parent->song.sampleLen) {
|
|
bank=sampleOffK007232[chan[i].sample]>>17;
|
|
start=sampleOffK007232[chan[i].sample]&0x1ffff;
|
|
loop=start+s->length8;
|
|
}
|
|
if (chan[i].audPos>0) {
|
|
start=start+MIN(chan[i].audPos,MIN(131072-1,s->length8));
|
|
}
|
|
start=MIN(start,MIN(getSampleMemCapacity(),131072)-1);
|
|
loop=MIN(loop,MIN(getSampleMemCapacity(),131072)-1);
|
|
// force keyoff first
|
|
chWrite(i,0,0);
|
|
chWrite(i,1,0);
|
|
chWrite(i,2,0xff);
|
|
chWrite(i,3,0xff);
|
|
chWrite(i,4,0x1);
|
|
chWrite(i,5,0);
|
|
// keyon
|
|
if (s->isLoopable()) {
|
|
loop=start+s->loopStart;
|
|
lastLoop|=(1<<i);
|
|
} else {
|
|
lastLoop&=~(i<<i);
|
|
}
|
|
rWrite(0xd,lastLoop);
|
|
rWrite(0x12+i,bank);
|
|
chWrite(i,0,chan[i].freq&0xff);
|
|
chWrite(i,1,(chan[i].freq>>8)&0xf);
|
|
chWrite(i,2,start&0xff);
|
|
chWrite(i,3,start>>8);
|
|
chWrite(i,4,start>>16);
|
|
chWrite(i,5,0);
|
|
if (s->isLoopable()) {
|
|
chWrite(i,2,loop&0xff);
|
|
chWrite(i,3,loop>>8);
|
|
chWrite(i,4,loop>>16);
|
|
}
|
|
if (!chan[i].std.vol.had) {
|
|
chan[i].outVol=chan[i].vol;
|
|
if (!isMuted[i]) {
|
|
chan[i].volumeChanged=true;
|
|
}
|
|
}
|
|
chan[i].keyOn=false;
|
|
}
|
|
if (chan[i].keyOff) {
|
|
chWrite(i,0,0);
|
|
chWrite(i,1,0);
|
|
chWrite(i,2,0xff);
|
|
chWrite(i,3,0xff);
|
|
chWrite(i,4,0x1);
|
|
chWrite(i,5,0);
|
|
lastLoop&=~(1<<i);
|
|
rWrite(0xd,lastLoop);
|
|
chan[i].keyOff=false;
|
|
}
|
|
if (chan[i].freqChanged) {
|
|
chWrite(i,0,chan[i].freq&0xff);
|
|
chWrite(i,1,(chan[i].freq>>8)&0xf);
|
|
chan[i].freqChanged=false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
int DivPlatformK007232::dispatch(DivCommand c) {
|
|
switch (c.cmd) {
|
|
case DIV_CMD_NOTE_ON: {
|
|
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_AMIGA);
|
|
chan[c.chan].macroVolMul=ins->type==DIV_INS_AMIGA?64:15;
|
|
chan[c.chan].sample=ins->amiga.getSample(c.value);
|
|
if (c.value!=DIV_NOTE_NULL) {
|
|
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
|
|
}
|
|
if (chan[c.chan].sample<0 || chan[c.chan].sample>=parent->song.sampleLen) {
|
|
chan[c.chan].sample=-1;
|
|
}
|
|
if (c.value!=DIV_NOTE_NULL) {
|
|
chan[c.chan].freqChanged=true;
|
|
chan[c.chan].note=c.value;
|
|
}
|
|
chan[c.chan].active=true;
|
|
chan[c.chan].keyOn=true;
|
|
chan[c.chan].macroInit(ins);
|
|
if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
|
|
chan[c.chan].outVol=chan[c.chan].vol;
|
|
if (!isMuted[c.chan]) {
|
|
chan[c.chan].volumeChanged=true;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case DIV_CMD_NOTE_OFF:
|
|
chan[c.chan].sample=-1;
|
|
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;
|
|
}
|
|
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 (!isMuted[c.chan]) {
|
|
chan[c.chan].volumeChanged=true;
|
|
}
|
|
}
|
|
}
|
|
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_PANNING:
|
|
chan[c.chan].panning=(c.value>>4)|(c.value2&0xf0);
|
|
if (!isMuted[c.chan] && stereo) {
|
|
chan[c.chan].volumeChanged=true;
|
|
}
|
|
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);
|
|
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_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-12):(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_AMIGA));
|
|
}
|
|
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_SAMPLE_POS:
|
|
chan[c.chan].audPos=c.value;
|
|
chan[c.chan].setPos=true;
|
|
break;
|
|
case DIV_CMD_GET_VOLMAX:
|
|
return 255;
|
|
break;
|
|
case DIV_ALWAYS_SET_VOLUME:
|
|
return 1;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
void DivPlatformK007232::muteChannel(int ch, bool mute) {
|
|
isMuted[ch]=mute;
|
|
chan[ch].volumeChanged=true;
|
|
}
|
|
|
|
void DivPlatformK007232::forceIns() {
|
|
for (int i=0; i<2; i++) {
|
|
chan[i].insChanged=true;
|
|
chan[i].freqChanged=true;
|
|
chan[i].sample=-1;
|
|
}
|
|
}
|
|
|
|
void* DivPlatformK007232::getChanState(int ch) {
|
|
return &chan[ch];
|
|
}
|
|
|
|
DivMacroInt* DivPlatformK007232::getChanMacroInt(int ch) {
|
|
return &chan[ch].std;
|
|
}
|
|
|
|
DivDispatchOscBuffer* DivPlatformK007232::getOscBuffer(int ch) {
|
|
return oscBuf[ch];
|
|
}
|
|
|
|
void DivPlatformK007232::reset() {
|
|
while (!writes.empty()) {
|
|
writes.pop();
|
|
}
|
|
memset(regPool,0,32);
|
|
k007232.reset();
|
|
lastLoop=0;
|
|
lastVolume=0xff;
|
|
for (int i=0; i<2; i++) {
|
|
chan[i]=DivPlatformK007232::Channel();
|
|
chan[i].std.setEngine(parent);
|
|
// keyoff all channels
|
|
chWrite(i,0,0);
|
|
chWrite(i,1,0);
|
|
chWrite(i,2,0xff);
|
|
chWrite(i,3,0xff);
|
|
chWrite(i,4,1);
|
|
chWrite(i,5,0);
|
|
}
|
|
}
|
|
|
|
bool DivPlatformK007232::isStereo() {
|
|
return stereo;
|
|
}
|
|
|
|
void DivPlatformK007232::notifyInsChange(int ins) {
|
|
for (int i=0; i<2; i++) {
|
|
if (chan[i].ins==ins) {
|
|
chan[i].insChanged=true;
|
|
}
|
|
}
|
|
}
|
|
|
|
void DivPlatformK007232::notifyWaveChange(int wave) {
|
|
// TODO when wavetables are added
|
|
// TODO they probably won't be added unless the samples reside in RAM
|
|
}
|
|
|
|
void DivPlatformK007232::notifyInsDeletion(void* ins) {
|
|
for (int i=0; i<2; i++) {
|
|
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
|
|
}
|
|
}
|
|
|
|
void DivPlatformK007232::setFlags(const DivConfig& flags) {
|
|
chipClock=COLOR_NTSC;
|
|
CHECK_CUSTOM_CLOCK;
|
|
rate=chipClock/4;
|
|
stereo=flags.getBool("stereo",false);
|
|
for (int i=0; i<2; i++) {
|
|
oscBuf[i]->rate=rate;
|
|
}
|
|
}
|
|
|
|
void DivPlatformK007232::poke(unsigned int addr, unsigned short val) {
|
|
rWrite(addr&0x1f,val);
|
|
}
|
|
|
|
void DivPlatformK007232::poke(std::vector<DivRegWrite>& wlist) {
|
|
for (DivRegWrite& i: wlist) rWrite(i.addr&0x1f,i.val);
|
|
}
|
|
|
|
unsigned char* DivPlatformK007232::getRegisterPool() {
|
|
return regPool;
|
|
}
|
|
|
|
int DivPlatformK007232::getRegisterPoolSize() {
|
|
return 32;
|
|
}
|
|
|
|
const void* DivPlatformK007232::getSampleMem(int index) {
|
|
return index == 0 ? sampleMem : NULL;
|
|
}
|
|
|
|
size_t DivPlatformK007232::getSampleMemCapacity(int index) {
|
|
return index == 0 ? 16777216 : 0;
|
|
}
|
|
|
|
size_t DivPlatformK007232::getSampleMemUsage(int index) {
|
|
return index == 0 ? sampleMemLen : 0;
|
|
}
|
|
|
|
bool DivPlatformK007232::isSampleLoaded(int index, int sample) {
|
|
if (index!=0) return false;
|
|
if (sample<0 || sample>255) return false;
|
|
return sampleLoaded[sample];
|
|
}
|
|
|
|
void DivPlatformK007232::renderSamples(int sysID) {
|
|
memset(sampleMem,0xc0,getSampleMemCapacity());
|
|
memset(sampleOffK007232,0,256*sizeof(unsigned int));
|
|
memset(sampleLoaded,0,256*sizeof(bool));
|
|
|
|
size_t memPos=0;
|
|
for (int i=0; i<parent->song.sampleLen; i++) {
|
|
DivSample* s=parent->song.sample[i];
|
|
if (!s->renderOn[0][sysID]) {
|
|
sampleOffK007232[i]=0;
|
|
continue;
|
|
}
|
|
|
|
int length=s->getLoopEndPosition(DIV_SAMPLE_DEPTH_8BIT);
|
|
int actualLength=MIN((int)(getSampleMemCapacity()-memPos)-1,length);
|
|
if (actualLength>0) {
|
|
if (actualLength>131072-1) {
|
|
actualLength=131072-1;
|
|
}
|
|
if ((memPos&0xfe0000)!=((memPos+actualLength+1)&0xfe0000)) {
|
|
memPos=(memPos+0x1ffff)&0xfe0000;
|
|
}
|
|
sampleOffK007232[i]=memPos;
|
|
for (int j=0; j<actualLength; j++) {
|
|
// convert to 7 bit unsigned
|
|
unsigned char val=(unsigned char)(s->data8[j])^0x80;
|
|
sampleMem[memPos++]=(val>>1)&0x7f;
|
|
}
|
|
// write end of sample marker
|
|
memset(&sampleMem[memPos],0xc0,1);
|
|
memPos+=1;
|
|
}
|
|
if (actualLength<length) {
|
|
logW("out of K007232 PCM memory for sample %d!",i);
|
|
break;
|
|
}
|
|
sampleLoaded[i]=true;
|
|
}
|
|
sampleMemLen=memPos;
|
|
}
|
|
|
|
int DivPlatformK007232::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
|
|
parent=p;
|
|
dumpWrites=false;
|
|
skipRegisterWrites=false;
|
|
|
|
for (int i=0; i<2; i++) {
|
|
isMuted[i]=false;
|
|
oscBuf[i]=new DivDispatchOscBuffer;
|
|
}
|
|
sampleMem=new unsigned char[getSampleMemCapacity()];
|
|
sampleMemLen=0;
|
|
setFlags(flags);
|
|
reset();
|
|
|
|
return 2;
|
|
}
|
|
|
|
void DivPlatformK007232::quit() {
|
|
delete[] sampleMem;
|
|
for (int i=0; i<2; i++) {
|
|
delete oscBuf[i];
|
|
}
|
|
}
|