WIP SNES support, part 1
This commit is contained in:
Natt Akuma
parent
caf548c639
commit
f3a90d554c
15 changed files with 2310 additions and 1 deletions
351
src/engine/platform/snes.cpp
Normal file
351
src/engine/platform/snes.cpp
Normal file
|
|
@ -0,0 +1,351 @@
|
|||
/**
|
||||
* 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 "snes.h"
|
||||
#include "../engine.h"
|
||||
#include <math.h>
|
||||
|
||||
#define CHIP_DIVIDER 16
|
||||
|
||||
#define rWrite(a,v) {dsp->write(a,v); regPool[(a)&0x7f]=v; }
|
||||
|
||||
const char* regCheatSheetSNESDSP[]={
|
||||
"VxVOLL", "x0",
|
||||
"VxVOLR", "x1",
|
||||
"VxPITCHL", "x2",
|
||||
"VxPITCHH", "x3",
|
||||
"VxSRCN", "x4",
|
||||
"VxADSR1", "x5",
|
||||
"VxADSR2", "x6",
|
||||
"VxGAIN", "x7",
|
||||
"VxENVX", "x8",
|
||||
"VxOUTX", "x9",
|
||||
"FIRx", "xF",
|
||||
|
||||
"MVOLL", "0C",
|
||||
"MVOLR", "1C",
|
||||
"EVOLL", "2C",
|
||||
"EVOLR", "3C",
|
||||
"KON", "4C",
|
||||
"KOFF", "5C",
|
||||
"FLG", "6C",
|
||||
"ENDX", "7C",
|
||||
|
||||
"EFB", "0D",
|
||||
"PMON", "2D",
|
||||
"NON", "3D",
|
||||
"EON", "4D",
|
||||
"DIR", "5D",
|
||||
"ESA", "6D",
|
||||
"EDL", "7D",
|
||||
NULL
|
||||
};
|
||||
|
||||
const char** DivPlatformSNES::getRegisterSheet() {
|
||||
return regCheatSheetSNESDSP;
|
||||
}
|
||||
|
||||
void DivPlatformSNES::acquire(short* bufL, short* bufR, size_t start, size_t len) {
|
||||
for (size_t h=start; h<start+len; h++) {
|
||||
short out[2];
|
||||
dsp->set_output(out,1);
|
||||
dsp->run(32);
|
||||
bufL[h]=out[0];
|
||||
bufR[h]=out[1];
|
||||
}
|
||||
}
|
||||
|
||||
void DivPlatformSNES::tick() {
|
||||
for (int i=0; i<8; i++) {
|
||||
chan[i].std.next();
|
||||
if (chan[i].std.hadVol) {
|
||||
chan[i].outVol=((chan[i].vol%65)*MIN(64,chan[i].std.vol))>>6;
|
||||
}
|
||||
double off=1.0;
|
||||
if (chan[i].sample>=0 && chan[i].sample<parent->song.sampleLen) {
|
||||
DivSample* s=parent->getSample(chan[i].sample);
|
||||
if (s->centerRate<1) {
|
||||
off=1.0;
|
||||
} else {
|
||||
off=8363.0/(double)s->centerRate;
|
||||
}
|
||||
}
|
||||
if (chan[i].std.hadArp) {
|
||||
if (!chan[i].inPorta) {
|
||||
if (chan[i].std.arpMode) {
|
||||
chan[i].baseFreq=off*NOTE_PERIODIC(chan[i].std.arp);
|
||||
} else {
|
||||
chan[i].baseFreq=off*NOTE_PERIODIC(chan[i].note+chan[i].std.arp);
|
||||
}
|
||||
}
|
||||
chan[i].freqChanged=true;
|
||||
} else {
|
||||
if (chan[i].std.arpMode && chan[i].std.finishedArp) {
|
||||
chan[i].baseFreq=off*NOTE_PERIODIC(chan[i].note);
|
||||
chan[i].freqChanged=true;
|
||||
}
|
||||
}
|
||||
if (chan[i].std.hadWave) {
|
||||
if (chan[i].wave!=chan[i].std.wave) {
|
||||
chan[i].wave=chan[i].std.wave;
|
||||
if (!chan[i].keyOff) chan[i].keyOn=true;
|
||||
}
|
||||
}
|
||||
if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
|
||||
//DivInstrument* ins=parent->getIns(chan[i].ins);
|
||||
chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true);
|
||||
if (chan[i].freq>4095) chan[i].freq=4095;
|
||||
if (chan[i].note>0x5d) chan[i].freq=0x01;
|
||||
if (chan[i].keyOn) {
|
||||
if (chan[i].wave<0) {
|
||||
chan[i].wave=0;
|
||||
}
|
||||
}
|
||||
if (chan[i].keyOff) {
|
||||
}
|
||||
if (chan[i].keyOn) chan[i].keyOn=false;
|
||||
if (chan[i].keyOff) chan[i].keyOff=false;
|
||||
chan[i].freqChanged=false;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
int DivPlatformSNES::dispatch(DivCommand c) {
|
||||
switch (c.cmd) {
|
||||
case DIV_CMD_NOTE_ON: {
|
||||
DivInstrument* ins=parent->getIns(chan[c.chan].ins);
|
||||
chan[c.chan].sample=ins->amiga.initSample;
|
||||
double off=1.0;
|
||||
if (chan[c.chan].sample>=0 && chan[c.chan].sample<parent->song.sampleLen) {
|
||||
DivSample* s=parent->getSample(chan[c.chan].sample);
|
||||
if (s->centerRate<1) {
|
||||
off=1.0;
|
||||
} else {
|
||||
off=8363.0/(double)s->centerRate;
|
||||
}
|
||||
}
|
||||
if (c.value!=DIV_NOTE_NULL) {
|
||||
chan[c.chan].baseFreq=off*NOTE_PERIODIC(c.value);
|
||||
}
|
||||
if (chan[c.chan].sample<0 || chan[c.chan].sample>=parent->song.sampleLen) {
|
||||
chan[c.chan].sample=-1;
|
||||
}
|
||||
if (chan[c.chan].setPos) {
|
||||
chan[c.chan].setPos=false;
|
||||
} else {
|
||||
chan[c.chan].audPos=0;
|
||||
}
|
||||
chan[c.chan].audSub=0;
|
||||
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].std.init(ins);
|
||||
break;
|
||||
}
|
||||
case DIV_CMD_NOTE_OFF:
|
||||
chan[c.chan].sample=-1;
|
||||
chan[c.chan].active=false;
|
||||
chan[c.chan].keyOff=true;
|
||||
chan[c.chan].std.init(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.hasVol) {
|
||||
chan[c.chan].outVol=c.value;
|
||||
}
|
||||
}
|
||||
break;
|
||||
case DIV_CMD_GET_VOLUME:
|
||||
if (chan[c.chan].std.hasVol) {
|
||||
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_WAVE:
|
||||
chan[c.chan].wave=c.value;
|
||||
chan[c.chan].keyOn=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: {
|
||||
double off=1.0;
|
||||
if (chan[c.chan].sample>=0 && chan[c.chan].sample<parent->song.sampleLen) {
|
||||
DivSample* s=parent->getSample(chan[c.chan].sample);
|
||||
if (s->centerRate<1) {
|
||||
off=1.0;
|
||||
} else {
|
||||
off=8363.0/(double)s->centerRate;
|
||||
}
|
||||
}
|
||||
chan[c.chan].baseFreq=off*NOTE_PERIODIC(c.value+((chan[c.chan].std.willArp && !chan[c.chan].std.arpMode)?(chan[c.chan].std.arp-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].std.init(parent->getIns(chan[c.chan].ins));
|
||||
}
|
||||
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 127;
|
||||
break;
|
||||
case DIV_ALWAYS_SET_VOLUME:
|
||||
return 1;
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
return 1;
|
||||
}
|
||||
|
||||
void DivPlatformSNES::muteChannel(int ch, bool mute) {
|
||||
isMuted[ch]=mute;
|
||||
}
|
||||
|
||||
void DivPlatformSNES::forceIns() {
|
||||
for (int i=0; i<8; i++) {
|
||||
chan[i].insChanged=true;
|
||||
chan[i].freqChanged=true;
|
||||
chan[i].audPos=131072;
|
||||
chan[i].audDat=0;
|
||||
chan[i].sample=-1;
|
||||
}
|
||||
}
|
||||
|
||||
void* DivPlatformSNES::getChanState(int ch) {
|
||||
return &chan[ch];
|
||||
}
|
||||
|
||||
unsigned char* DivPlatformSNES::getRegisterPool() {
|
||||
// get states from emulator
|
||||
for (int i=0; i<0x80; i+=0x10) {
|
||||
regPool[i+8]=dsp->read(i+8);
|
||||
regPool[i+9]=dsp->read(i+9);
|
||||
}
|
||||
return regPool;
|
||||
}
|
||||
|
||||
int DivPlatformSNES::getRegisterPoolSize() {
|
||||
return 128;
|
||||
}
|
||||
|
||||
void DivPlatformSNES::reset() {
|
||||
for (int i=0; i<8; i++) {
|
||||
chan[i]=Channel();
|
||||
}
|
||||
dsp->init(&aram);
|
||||
dsp->set_output(NULL, 0);
|
||||
memset(regPool,0,128);
|
||||
}
|
||||
|
||||
bool DivPlatformSNES::isStereo() {
|
||||
return true;
|
||||
}
|
||||
|
||||
bool DivPlatformSNES::keyOffAffectsArp(int ch) {
|
||||
return true;
|
||||
}
|
||||
|
||||
void DivPlatformSNES::notifyInsChange(int ins) {
|
||||
for (int i=0; i<8; i++) {
|
||||
if (chan[i].ins==ins) {
|
||||
chan[i].insChanged=true;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void DivPlatformSNES::notifyWaveChange(int wave) {
|
||||
// TODO when wavetables are added
|
||||
}
|
||||
|
||||
void DivPlatformSNES::notifyInsDeletion(void* ins) {
|
||||
for (int i=0; i<8; i++) {
|
||||
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
|
||||
}
|
||||
}
|
||||
|
||||
void DivPlatformSNES::poke(unsigned int addr, unsigned short val) {
|
||||
rWrite(addr,val);
|
||||
}
|
||||
|
||||
void DivPlatformSNES::poke(std::vector<DivRegWrite>& wlist) {
|
||||
for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
|
||||
}
|
||||
|
||||
int DivPlatformSNES::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
|
||||
parent=p;
|
||||
dsp=new SPC_DSP;
|
||||
dumpWrites=false;
|
||||
skipRegisterWrites=false;
|
||||
for (int i=0; i<8; i++) {
|
||||
isMuted[i]=false;
|
||||
}
|
||||
chipClock=1024000;
|
||||
rate=chipClock/32;
|
||||
reset();
|
||||
return 8;
|
||||
}
|
||||
|
||||
void DivPlatformSNES::quit() {
|
||||
delete dsp;
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue