mirror of
https://github.com/tildearrow/furnace.git
synced 2024-11-14 00:35:06 +00:00
373 lines
9.9 KiB
C++
373 lines
9.9 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2022 tildearrow and contributors
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "bubsyswsg.h"
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#include "../engine.h"
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#include <math.h>
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#define CHIP_DIVIDER 32
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#define rWrite(a,v) {if(!skipRegisterWrites) {regPool[a]=v; if(dumpWrites) addWrite(a,v); }}
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const char* regCheatSheetBubSysWSG[]={
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// K005289 timer
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"Freq_A", "0",
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"Freq_B", "1",
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// PROM, DAC control from External logic (Connected to AY PSG ports on Bubble System)
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"WaveVol_A", "2",
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"WaveVol_B", "3",
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NULL
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};
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const char** DivPlatformBubSysWSG::getRegisterSheet() {
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return regCheatSheetBubSysWSG;
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}
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const char* DivPlatformBubSysWSG::getEffectName(unsigned char effect) {
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switch (effect) {
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case 0x10:
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return "10xx: Change waveform";
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break;
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}
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return NULL;
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}
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void DivPlatformBubSysWSG::acquire(short* bufL, short* bufR, size_t start, size_t len) {
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int chanOut=0;
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for (size_t h=start; h<start+len; h++) {
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signed int out=0;
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// K005289 part
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k005289->tick();
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// Wavetable part
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for (int i=0; i<2; i++) {
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if (isMuted[i]) {
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oscBuf[i]->data[oscBuf[i]->needle++]=0;
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continue;
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} else {
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chanOut=chan[i].waveROM[k005289->addr(i)]*(regPool[2+i]&0xf);
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out+=chanOut;
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if (writeOscBuf==0) {
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oscBuf[i]->data[oscBuf[i]->needle++]=chanOut<<7;
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}
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}
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}
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if (++writeOscBuf>=64) writeOscBuf=0;
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out<<=6; // scale output to 16 bit
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if (out<-32768) out=-32768;
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if (out>32767) out=32767;
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//printf("out: %d\n",out);
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bufL[h]=bufR[h]=out;
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}
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}
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void DivPlatformBubSysWSG::updateWave(int ch) {
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//DivWavetable* wt=parent->getWave(chan[ch].wave);
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for (int i=0; i<32; i++) {
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// convert to signed
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chan[ch].waveROM[i]=chan[ch].ws.output[i]-8;
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}
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if (chan[ch].active) {
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rWrite(2+ch,(ch<<5)|chan[ch].outVol);
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}
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}
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void DivPlatformBubSysWSG::tick(bool sysTick) {
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for (int i=0; i<2; i++) {
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chan[i].std.next();
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if (chan[i].std.vol.had) {
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chan[i].outVol=((chan[i].vol&15)*MIN(15,chan[i].std.vol.val))/15;
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rWrite(2+i,(chan[i].wave<<5)|chan[i].outVol);
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}
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if (chan[i].std.arp.had) {
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if (!chan[i].inPorta) {
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if (chan[i].std.arp.mode) {
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chan[i].baseFreq=NOTE_PERIODIC(chan[i].std.arp.val);
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} else {
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chan[i].baseFreq=NOTE_PERIODIC(chan[i].note+chan[i].std.arp.val);
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}
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}
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chan[i].freqChanged=true;
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} else {
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if (chan[i].std.arp.mode && chan[i].std.arp.finished) {
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chan[i].baseFreq=NOTE_PERIODIC(chan[i].note);
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chan[i].freqChanged=true;
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}
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}
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if (chan[i].std.wave.had) {
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if (chan[i].wave!=chan[i].std.wave.val || chan[i].ws.activeChanged()) {
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chan[i].wave=chan[i].std.wave.val;
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chan[i].ws.changeWave1(chan[i].wave);
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if (!chan[i].keyOff) chan[i].keyOn=true;
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}
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}
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if (chan[i].std.pitch.had) {
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if (chan[i].std.pitch.mode) {
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chan[i].pitch2+=chan[i].std.pitch.val;
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CLAMP_VAR(chan[i].pitch2,-2048,2048);
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} else {
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chan[i].pitch2=chan[i].std.pitch.val;
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}
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chan[i].freqChanged=true;
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}
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if (chan[i].active) {
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if (chan[i].ws.tick()) {
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updateWave(i);
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}
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}
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if (chan[i].freqChanged || chan[i].keyOn || chan[i].keyOff) {
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//DivInstrument* ins=parent->getIns(chan[i].ins,DIV_INS_SCC);
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chan[i].freq=0x1000-parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true)+chan[i].pitch2;
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if (chan[i].freq<0) chan[i].freq=0;
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if (chan[i].freq>4095) chan[i].freq=4095;
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k005289->load(i,chan[i].freq);
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rWrite(i,chan[i].freq);
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k005289->update(i);
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if (chan[i].keyOn) {
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// ???
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}
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if (chan[i].keyOff) {
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rWrite(2+i,(chan[i].wave<<5)|0);
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}
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if (chan[i].keyOn) chan[i].keyOn=false;
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if (chan[i].keyOff) chan[i].keyOff=false;
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chan[i].freqChanged=false;
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}
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}
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}
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int DivPlatformBubSysWSG::dispatch(DivCommand c) {
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switch (c.cmd) {
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case DIV_CMD_NOTE_ON: {
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DivInstrument* ins=parent->getIns(chan[c.chan].ins,DIV_INS_SCC);
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if (c.value!=DIV_NOTE_NULL) {
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chan[c.chan].baseFreq=NOTE_PERIODIC(c.value);
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chan[c.chan].freqChanged=true;
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chan[c.chan].note=c.value;
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}
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chan[c.chan].active=true;
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chan[c.chan].keyOn=true;
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rWrite(2+c.chan,(chan[c.chan].wave<<5)|chan[c.chan].vol);
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chan[c.chan].macroInit(ins);
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if (chan[c.chan].wave<0) {
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chan[c.chan].wave=0;
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chan[c.chan].ws.changeWave1(chan[c.chan].wave);
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}
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chan[c.chan].ws.init(ins,32,15,chan[c.chan].insChanged);
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chan[c.chan].insChanged=false;
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break;
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}
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case DIV_CMD_NOTE_OFF:
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chan[c.chan].active=false;
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chan[c.chan].keyOff=true;
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chan[c.chan].macroInit(NULL);
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break;
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case DIV_CMD_NOTE_OFF_ENV:
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case DIV_CMD_ENV_RELEASE:
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chan[c.chan].std.release();
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break;
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case DIV_CMD_INSTRUMENT:
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if (chan[c.chan].ins!=c.value || c.value2==1) {
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chan[c.chan].ins=c.value;
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}
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break;
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case DIV_CMD_VOLUME:
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if (chan[c.chan].vol!=c.value) {
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chan[c.chan].vol=c.value;
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if (!chan[c.chan].std.vol.has) {
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chan[c.chan].outVol=c.value;
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if (chan[c.chan].active) rWrite(2+c.chan,(chan[c.chan].wave<<5)|chan[c.chan].outVol);
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}
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}
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break;
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case DIV_CMD_GET_VOLUME:
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if (chan[c.chan].std.vol.has) {
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return chan[c.chan].vol;
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}
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return chan[c.chan].outVol;
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break;
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case DIV_CMD_PITCH:
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chan[c.chan].pitch=c.value;
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chan[c.chan].freqChanged=true;
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break;
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case DIV_CMD_WAVE:
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chan[c.chan].wave=c.value;
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chan[c.chan].ws.changeWave1(chan[c.chan].wave);
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chan[c.chan].keyOn=true;
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break;
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case DIV_CMD_NOTE_PORTA: {
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int destFreq=NOTE_PERIODIC(c.value2);
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bool return2=false;
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if (destFreq>chan[c.chan].baseFreq) {
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chan[c.chan].baseFreq+=c.value;
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if (chan[c.chan].baseFreq>=destFreq) {
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chan[c.chan].baseFreq=destFreq;
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return2=true;
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}
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} else {
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chan[c.chan].baseFreq-=c.value;
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if (chan[c.chan].baseFreq<=destFreq) {
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chan[c.chan].baseFreq=destFreq;
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return2=true;
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}
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}
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chan[c.chan].freqChanged=true;
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if (return2) {
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chan[c.chan].inPorta=false;
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return 2;
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}
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break;
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}
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case DIV_CMD_LEGATO:
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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):(0)));
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chan[c.chan].freqChanged=true;
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chan[c.chan].note=c.value;
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break;
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case DIV_CMD_PRE_PORTA:
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if (chan[c.chan].active && c.value2) {
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if (parent->song.resetMacroOnPorta) chan[c.chan].macroInit(parent->getIns(chan[c.chan].ins,DIV_INS_SCC));
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}
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chan[c.chan].inPorta=c.value;
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break;
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case DIV_CMD_GET_VOLMAX:
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return 15;
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break;
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case DIV_ALWAYS_SET_VOLUME:
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return 1;
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break;
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default:
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break;
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}
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return 1;
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}
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void DivPlatformBubSysWSG::muteChannel(int ch, bool mute) {
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isMuted[ch]=mute;
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//rWrite(2+ch,(chan[ch].wave<<5)|((chan[ch].active && isMuted[ch])?0:chan[ch].outVol));
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}
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void DivPlatformBubSysWSG::forceIns() {
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for (int i=0; i<2; i++) {
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chan[i].insChanged=true;
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chan[i].freqChanged=true;
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updateWave(i);
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}
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}
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void* DivPlatformBubSysWSG::getChanState(int ch) {
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return &chan[ch];
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}
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DivDispatchOscBuffer* DivPlatformBubSysWSG::getOscBuffer(int ch) {
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return oscBuf[ch];
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}
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unsigned char* DivPlatformBubSysWSG::getRegisterPool() {
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return (unsigned char*)regPool;
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}
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int DivPlatformBubSysWSG::getRegisterPoolSize() {
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return 4;
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}
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int DivPlatformBubSysWSG::getRegisterPoolDepth() {
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return 16;
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}
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void DivPlatformBubSysWSG::reset() {
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memset(regPool,0,4*2);
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for (int i=0; i<2; i++) {
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chan[i]=DivPlatformBubSysWSG::Channel();
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chan[i].std.setEngine(parent);
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chan[i].ws.setEngine(parent);
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chan[i].ws.init(NULL,32,15,false);
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}
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if (dumpWrites) {
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addWrite(0xffffffff,0);
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}
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k005289->reset();
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}
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bool DivPlatformBubSysWSG::isStereo() {
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return false;
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}
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bool DivPlatformBubSysWSG::keyOffAffectsArp(int ch) {
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return true;
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}
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void DivPlatformBubSysWSG::notifyWaveChange(int wave) {
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for (int i=0; i<2; i++) {
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if (chan[i].wave==wave) {
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chan[i].ws.changeWave1(chan[i].wave);
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updateWave(i);
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}
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}
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}
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void DivPlatformBubSysWSG::notifyInsDeletion(void* ins) {
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for (int i=0; i<2; i++) {
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chan[i].std.notifyInsDeletion((DivInstrument*)ins);
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}
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}
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void DivPlatformBubSysWSG::setFlags(unsigned int flags) {
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chipClock=COLOR_NTSC;
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rate=chipClock;
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for (int i=0; i<2; i++) {
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oscBuf[i]->rate=rate/64;
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}
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}
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void DivPlatformBubSysWSG::poke(unsigned int addr, unsigned short val) {
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rWrite(addr,val);
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}
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void DivPlatformBubSysWSG::poke(std::vector<DivRegWrite>& wlist) {
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for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
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}
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int DivPlatformBubSysWSG::init(DivEngine* p, int channels, int sugRate, unsigned int flags) {
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parent=p;
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dumpWrites=false;
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skipRegisterWrites=false;
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writeOscBuf=0;
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for (int i=0; i<2; i++) {
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isMuted[i]=false;
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oscBuf[i]=new DivDispatchOscBuffer;
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}
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setFlags(flags);
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k005289=new k005289_core();
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reset();
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return 2;
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}
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void DivPlatformBubSysWSG::quit() {
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for (int i=0; i<2; i++) {
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delete oscBuf[i];
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}
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delete k005289;
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}
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DivPlatformBubSysWSG::~DivPlatformBubSysWSG() {
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}
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