furnace/src/engine/platform/upd1771c.cpp

380 lines
10 KiB
C++

/**
* Furnace Tracker - multi-system chiptune tracker
* Copyright (C) 2021-2024 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 "upd1771c.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* regCheatSheetUPD1771c[]={
NULL
};
unsigned char upd1771c_kon[4];
unsigned char upd1771c_initWrite[4];
unsigned char upd1771c_initWrite2[4];
const char** DivPlatformUPD1771c::getRegisterSheet() {
return regCheatSheetUPD1771c;
}
void DivPlatformUPD1771c::acquire(short** buf, size_t len) {
for (size_t h=0; h<len; h++) {
/*
int mask_bits=0;
for (int i=0; i<4; i++)
mask_bits |= isMuted[i]?0:8>>i;
//upd1771c_set_mute_mask(mask_bits);
*/
while (!writes.empty()) {
QueuedWrite w=writes.front();
upd1771c_write_packet(w.addr&15,w.val);
regPool[w.addr&0xf]=w.val;
writes.pop();
}
signed short s = upd1771c_sound_stream_update();
for (int i=0; i<1; i++) {
oscBuf[i]->data[oscBuf[i]->needle++]=s;
}
//printf("tempL: %d tempR: %d\n",tempL,tempR);
buf[0][h]=s;
buf[1][h]=s;
}
}
void DivPlatformUPD1771c::tick(bool sysTick) {
for (int i=0; i<1; i++) {
chan[i].std.next();
if (chan[i].std.vol.had) {
chan[i].outVol=VOL_SCALE_LINEAR(chan[i].vol&31,MIN(31,chan[i].std.vol.val),31);
}
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);
chan[i].baseFreq=NOTE_PERIODIC(f);
}
chan[i].freqChanged=true;
}
if (chan[i].std.wave.had) {
chan[i].wave=chan[i].std.wave.val&7;
}
if (chan[i].std.duty.had) {
chan[i].duty=chan[i].std.duty.val&1;
}
if (chan[i].std.ex1.had) {
chan[i].pos=chan[i].std.ex1.val&31;
}
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==0) {
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,CHIP_DIVIDER);
}
if (chan[i].freqChanged || upd1771c_initWrite[i] || chan[i].keyOn) {
if (chan[i].duty == 0) {
rWrite(0,2);
rWrite(1,(chan[i].wave<<5)|chan[i].pos);
rWrite(2,MIN(MAX(chan[i].freq,0),255));
rWrite(3,chan[i].outVol);
} else if (chan[i].duty == 1) {
rWrite(0,1);
rWrite(1,(chan[i].wave<<5));
rWrite(2,MIN(MAX(chan[i].freq>>7,0),255));
rWrite(3,chan[i].outVol);
} else {
rWrite(0,0);
}
upd1771c_initWrite[i]=0;
}
if (chan[i].keyOff) {
rWrite(0,0);
}
if (chan[i].keyOn) upd1771c_kon[i]=1;
if (chan[i].keyOff) upd1771c_kon[i]=0;
if (chan[i].keyOn) chan[i].keyOn=false;
if (chan[i].keyOff) chan[i].keyOff=false;
chan[i].freqChanged=false;
}
if (upd1771c_kon[i]) {
if (i==0) {
if (chan[i].duty == 0) {
rWrite(0,2);
rWrite(1,(chan[i].wave<<5)|chan[i].pos);
rWrite(2,MIN(MAX(chan[i].freq,0),255));
rWrite(3,chan[i].outVol);
} else if (chan[i].duty == 1) {
rWrite(0,1);
rWrite(1,(chan[i].wave<<5));
rWrite(2,MIN(MAX(chan[i].freq>>7,0),255));
rWrite(3,chan[i].outVol);
} else {
rWrite(0,0);
}
}
} else {
if (i == 0) {
rWrite(0,0);
}
}
}
}
int DivPlatformUPD1771c::dispatch(DivCommand c) {
switch (c.cmd) {
case DIV_CMD_NOTE_ON: {
DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_UPD1771C);
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);
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].wave=c.value&7;
chan[c.chan].duty=c.value>>4&1;
break;
case DIV_CMD_N163_WAVE_POSITION:
chan[c.chan].pos=c.value;
break;
case DIV_CMD_LEGATO:
chan[c.chan].baseFreq=NOTE_PERIODIC(c.value+((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_UPD1771C));
}
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 31;
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 DivPlatformUPD1771c::muteChannel(int ch, bool mute) {
isMuted[ch]=mute;
}
void DivPlatformUPD1771c::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* DivPlatformUPD1771c::getChanState(int ch) {
return &chan[ch];
}
DivMacroInt* DivPlatformUPD1771c::getChanMacroInt(int ch) {
return &chan[ch].std;
}
DivDispatchOscBuffer* DivPlatformUPD1771c::getOscBuffer(int ch) {
return oscBuf[ch];
}
unsigned char* DivPlatformUPD1771c::getRegisterPool() {
return regPool;
}
int DivPlatformUPD1771c::getRegisterPoolSize() {
return 16;
}
void DivPlatformUPD1771c::reset() {
writes.clear();
memset(regPool,0,16);
for (int i=0; i<1; i++) {
chan[i]=DivPlatformUPD1771c::Channel();
chan[i].std.setEngine(parent);
}
if (dumpWrites) {
addWrite(0xffffffff,0);
}
//upd1771c_sound_reset();
memset(tempL,0,32*sizeof(int));
memset(tempR,0,32*sizeof(int));
memset(upd1771c_kon,0,4*sizeof(unsigned char));
memset(upd1771c_initWrite,1,4*sizeof(unsigned char));
memset(upd1771c_initWrite2,1,4*sizeof(unsigned char));
}
int DivPlatformUPD1771c::getOutputCount() {
return 2;
}
bool DivPlatformUPD1771c::keyOffAffectsArp(int ch) {
return true;
}
void DivPlatformUPD1771c::notifyInsDeletion(void* ins) {
for (int i=0; i<1; i++) {
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
}
}
void DivPlatformUPD1771c::setFlags(const DivConfig& flags) {
chipClock=6000000;
CHECK_CUSTOM_CLOCK;
rate=chipClock/32;
for (int i=0; i<1; i++) {
oscBuf[i]->rate=rate;
}
upd1771c_sound_set_clock((unsigned int)chipClock,8);
}
void DivPlatformUPD1771c::poke(unsigned int addr, unsigned short val) {
rWrite(addr,val);
}
void DivPlatformUPD1771c::poke(std::vector<DivRegWrite>& wlist) {
for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
}
int DivPlatformUPD1771c::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
parent=p;
dumpWrites=false;
skipRegisterWrites=false;
for (int i=0; i<1; i++) {
isMuted[i]=false;
oscBuf[i]=new DivDispatchOscBuffer;
}
setFlags(flags);
reset();
return 1;
}
void DivPlatformUPD1771c::quit() {
for (int i=0; i<1; i++) {
delete oscBuf[i];
}
}
DivPlatformUPD1771c::~DivPlatformUPD1771c() {
}