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furnace/src/engine/platform/msm5232.cpp
tildearrow 3eb3d8a6f1 prepare for new arp strategy
2022-12-17 01:21:08 -05:00

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/**
* 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.
*/
#define _USE_MATH_DEFINES
#include "msm5232.h"
#include "../engine.h"
#include <math.h>
//#define rWrite(a,v) pendingWrites[a]=v;
#define rWrite(a,v) if (!skipRegisterWrites) {writes.emplace(a,v); if (dumpWrites) {addWrite(a,v);} }
#define NOTE_LINEAR(x) ((x)<<7)
const char* regCheatSheetMSM5232[]={
"Select", "0",
"MasterVol", "1",
"FreqL", "2",
"FreqH", "3",
"DataCtl", "4",
"ChanVol", "5",
"WaveCtl", "6",
"NoiseCtl", "7",
"LFOFreq", "8",
"LFOCtl", "9",
NULL
};
const char** DivPlatformMSM5232::getRegisterSheet() {
return regCheatSheetMSM5232;
}
void DivPlatformMSM5232::acquire(short* bufL, short* bufR, size_t start, size_t len) {
for (size_t h=start; h<start+len; h++) {
while (!writes.empty()) {
QueuedWrite w=writes.front();
msm->write(w.addr,w.val);
regPool[w.addr&0x0f]=w.val;
writes.pop();
}
for (int i=0; i<8; i++) {
int o=(
((regPool[12+(i>>4)]&1)?((msm->vo16[i]*partVolume[3+(i&4)])>>8):0)+
((regPool[12+(i>>4)]&2)?((msm->vo8[i]*partVolume[2+(i&4)])>>8):0)+
((regPool[12+(i>>4)]&4)?((msm->vo4[i]*partVolume[1+(i&4)])>>8):0)+
((regPool[12+(i>>4)]&8)?((msm->vo2[i]*partVolume[i&4])>>8):0)
)<<3;
oscBuf[i]->data[oscBuf[i]->needle++]=CLAMP(o,-32768,32767);
}
clockDriftLFOPos+=clockDriftLFOSpeed;
clockDriftLFOPos&=(1U<<21)-1;
clockDriftAccum+=clockDriftLFOWave[clockDriftLFOPos>>13];
if (clockDriftAccum>=2048) {
clockDriftAccum-=2048;
} else {
memset(temp,0,16*sizeof(short));
msm->sound_stream_update(temp);
}
//printf("tempL: %d tempR: %d\n",tempL,tempR);
bufL[h]=0;
for (int i=0; i<8; i++) {
bufL[h]+=(temp[i]*partVolume[i])>>8;
}
}
}
const int attackMap[8]={
0, 1, 2, 3, 4, 5, 5, 5
};
const int decayMap[16]={
0, 1, 2, 3, 8, 9, 4, 10, 5, 11, 12, 13, 13, 13, 13, 13
};
void DivPlatformMSM5232::tick(bool sysTick) {
for (int i=0; i<8; i++) {
chan[i].std.next();
if (chan[i].std.vol.had) {
chan[i].outVol=VOL_SCALE_LINEAR(chan[i].vol&127,MIN(127,chan[i].std.vol.val),127);
}
if (NEW_ARP_STRAT) {
chan[i].handleArp();
} else if (chan[i].std.arp.had) {
if (!chan[i].inPorta) {
chan[i].baseFreq=NOTE_LINEAR(parent->calcArp(chan[i].note,chan[i].std.arp.val));
}
chan[i].freqChanged=true;
}
if (chan[i].std.duty.had) {
groupControl[i>>2]=(chan[i].std.duty.val&0x1f)|(groupEnv[i>>2]?0x20:0);
updateGroup[i>>2]=true;
}
if (chan[i].std.ex1.had) { // attack
groupAR[i>>2]=attackMap[chan[i].std.ex1.val&7];
updateGroupAR[i>>2]=true;
}
if (chan[i].std.ex2.had) { // decay
groupDR[i>>2]=decayMap[chan[i].std.ex2.val&15];
updateGroupDR[i>>2]=true;
}
if (chan[i].std.ex3.had) { // noise
chan[i].noise=chan[i].std.ex3.val;
chan[i].freqChanged=true;
}
}
for (int i=0; i<2; i++) {
if (updateGroup[i]) {
rWrite(12+i,groupControl[i]);
updateGroup[i]=false;
}
if (updateGroupAR[i]) {
rWrite(8+i,groupAR[i]);
updateGroupAR[i]=false;
}
if (updateGroupDR[i]) {
rWrite(10+i,groupDR[i]);
updateGroupDR[i]=false;
}
}
for (int i=0; i<8; i++) {
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
//DivInstrument* ins=parent->getIns(chan[i].ins,DIV_INS_PCE);
chan[i].freq=chan[i].baseFreq+chan[i].pitch+chan[i].pitch2-(12<<7);
if (chan[i].freq<0) chan[i].freq=0;
if (chan[i].freq>0x2aff) chan[i].freq=0x2aff;
if (chan[i].keyOn) {
//rWrite(16+i*5,0x80);
//chWrite(i,0x04,0x80|chan[i].vol);
}
if (chan[i].active) {
rWrite(i,chan[i].noise?0xd8:(0x80|(chan[i].freq>>7)));
}
if (chan[i].keyOff) {
rWrite(i,0);
}
if (chan[i].keyOn) chan[i].keyOn=false;
if (chan[i].keyOff) chan[i].keyOff=false;
chan[i].freqChanged=false;
}
}
msm->set_vol_input(
chan[0].active?((double)chan[0].outVol/127.0):0.0,
chan[1].active?((double)chan[1].outVol/127.0):0.0,
chan[2].active?((double)chan[2].outVol/127.0):0.0,
chan[3].active?((double)chan[3].outVol/127.0):0.0,
chan[4].active?((double)chan[4].outVol/127.0):0.0,
chan[5].active?((double)chan[5].outVol/127.0):0.0,
chan[6].active?((double)chan[6].outVol/127.0):0.0,
chan[7].active?((double)chan[7].outVol/127.0):0.0
);
}
int DivPlatformMSM5232::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_PCE);
if (c.value!=DIV_NOTE_NULL) {
chan[c.chan].baseFreq=NOTE_LINEAR(c.value);
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;
}
chan[c.chan].insChanged=false;
break;
}
case DIV_CMD_NOTE_OFF:
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;
}
}
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_LINEAR(c.value2);
bool return2=false;
if (destFreq>chan[c.chan].baseFreq) {
chan[c.chan].baseFreq+=c.value*parent->song.pitchSlideSpeed;
if (chan[c.chan].baseFreq>=destFreq) {
chan[c.chan].baseFreq=destFreq;
return2=true;
}
} else {
chan[c.chan].baseFreq-=c.value*parent->song.pitchSlideSpeed;
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_WAVE:
groupControl[c.chan>>2]=c.value&0x1f;
updateGroup[c.chan>>2]=true;
break;
case DIV_CMD_STD_NOISE_MODE:
chan[c.chan].noise=c.value;
chan[c.chan].freqChanged=true;
break;
case DIV_CMD_FM_AR:
groupAR[c.chan>>2]=attackMap[c.value&7];
updateGroupAR[c.chan>>2]=true;
break;
case DIV_CMD_FM_DR:
groupDR[c.chan>>2]=decayMap[c.value&15];
updateGroupDR[c.chan>>2]=true;
break;
case DIV_CMD_LEGATO:
chan[c.chan].baseFreq=NOTE_LINEAR(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_LINEAR(chan[c.chan].note);
chan[c.chan].inPorta=c.value;
break;
case DIV_CMD_GET_VOLMAX:
return 127;
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_ALWAYS_SET_VOLUME:
return 1;
break;
default:
break;
}
return 1;
}
void DivPlatformMSM5232::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
msm->mute(ch,mute);
}
void DivPlatformMSM5232::forceIns() {
for (int i=0; i<8; i++) {
chan[i].insChanged=true;
chan[i].freqChanged=true;
}
for (int i=0; i<2; i++) {
updateGroup[i]=true;
updateGroupAR[i]=true;
updateGroupDR[i]=true;
}
}
void* DivPlatformMSM5232::getChanState(int ch) {
return &chan[ch];
}
DivMacroInt* DivPlatformMSM5232::getChanMacroInt(int ch) {
return &chan[ch].std;
}
DivDispatchOscBuffer* DivPlatformMSM5232::getOscBuffer(int ch) {
return oscBuf[ch];
}
unsigned char* DivPlatformMSM5232::getRegisterPool() {
return regPool;
}
int DivPlatformMSM5232::getRegisterPoolSize() {
return 14;
}
void DivPlatformMSM5232::reset() {
while (!writes.empty()) writes.pop();
memset(regPool,0,128);
for (int i=0; i<8; i++) {
chan[i]=DivPlatformMSM5232::Channel();
chan[i].std.setEngine(parent);
}
if (dumpWrites) {
addWrite(0xffffffff,0);
}
msm->device_start();
msm->device_reset();
memset(temp,0,16*sizeof(short));
cycles=0;
curChan=-1;
delay=500;
clockDriftLFOPos=0;
clockDriftAccum=0;
for (int i=0; i<2; i++) {
groupControl[i]=15|(groupEnv[i]?0x20:0);
groupAR[i]=0;
groupDR[i]=5;
updateGroup[i]=true;
updateGroupAR[i]=true;
updateGroupDR[i]=true;
}
for (int i=0; i<8; i++) {
rWrite(i,0);
partVolume[i]=initPartVolume[i];
msm->mute(i,isMuted[i]);
}
}
bool DivPlatformMSM5232::isStereo() {
return false;
}
bool DivPlatformMSM5232::keyOffAffectsArp(int ch) {
return true;
}
void DivPlatformMSM5232::notifyInsDeletion(void* ins) {
for (int i=0; i<8; i++) {
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
}
}
void DivPlatformMSM5232::setFlags(const DivConfig& flags) {
chipClock=2119040;
CHECK_CUSTOM_CLOCK;
detune=flags.getInt("detune",0);
msm->set_clock(chipClock+detune*1024);
rate=msm->get_rate();
for (int i=0; i<8; i++) {
oscBuf[i]->rate=rate;
}
initPartVolume[0]=flags.getInt("partVolume0",255);
initPartVolume[1]=flags.getInt("partVolume1",255);
initPartVolume[2]=flags.getInt("partVolume2",255);
initPartVolume[3]=flags.getInt("partVolume3",255);
initPartVolume[4]=flags.getInt("partVolume4",255);
initPartVolume[5]=flags.getInt("partVolume5",255);
initPartVolume[6]=flags.getInt("partVolume6",255);
initPartVolume[7]=flags.getInt("partVolume7",255);
capacitance[0]=flags.getFloat("capValue0",390.0f);
capacitance[1]=flags.getFloat("capValue1",390.0f);
capacitance[2]=flags.getFloat("capValue2",390.0f);
capacitance[3]=flags.getFloat("capValue3",390.0f);
capacitance[4]=flags.getFloat("capValue4",390.0f);
capacitance[5]=flags.getFloat("capValue5",390.0f);
capacitance[6]=flags.getFloat("capValue6",390.0f);
capacitance[7]=flags.getFloat("capValue7",390.0f);
groupEnv[0]=flags.getBool("groupEnv0",true);
groupEnv[1]=flags.getBool("groupEnv1",true);
msm->set_capacitors(
capacitance[0]*0.000000001,
capacitance[1]*0.000000001,
capacitance[2]*0.000000001,
capacitance[3]*0.000000001,
capacitance[4]*0.000000001,
capacitance[5]*0.000000001,
capacitance[6]*0.000000001,
capacitance[7]*0.000000001
);
for (int i=0; i<256; i++) {
clockDriftLFOWave[i]=(1.0+sin(M_PI*(double)i/128.0))*flags.getInt("vibDepth",0.0f);
}
clockDriftLFOSpeed=flags.getInt("vibSpeed",0);
}
void DivPlatformMSM5232::poke(unsigned int addr, unsigned short val) {
rWrite(addr,val);
}
void DivPlatformMSM5232::poke(std::vector<DivRegWrite>& wlist) {
for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
}
int DivPlatformMSM5232::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
parent=p;
dumpWrites=false;
skipRegisterWrites=false;
for (int i=0; i<8; i++) {
isMuted[i]=false;
oscBuf[i]=new DivDispatchOscBuffer;
}
msm=new msm5232_device(2119040);
msm->device_start();
setFlags(flags);
reset();
return 8;
}
void DivPlatformMSM5232::quit() {
for (int i=0; i<8; i++) {
delete oscBuf[i];
}
if (msm!=NULL) {
msm->device_stop();
delete msm;
msm=NULL;
}
}
DivPlatformMSM5232::~DivPlatformMSM5232() {
}
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