544 lines
14 KiB
C++
544 lines
14 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2023 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 "vb.h"
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#include "../engine.h"
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#include <math.h>
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//#define rWrite(a,v) pendingWrites[a]=v;
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#define rWrite(a,v) if (!skipRegisterWrites) {writes.push(QueuedWrite(a,v)); if (dumpWrites) {addWrite(a,v);} }
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#define chWrite(c,a,v) rWrite(0x400+((c)<<6)+((a)<<2),v);
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#define CHIP_DIVIDER 16
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const char* regCheatSheetVB[]={
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"Wave0", "000",
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"Wave1", "080",
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"Wave2", "100",
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"Wave3", "180",
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"Wave4", "200",
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"ModTable", "280",
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"S1INT", "400",
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"S1LRV", "404",
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"S1FQL", "408",
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"S1FQH", "40C",
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"S1EV0", "410",
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"S1EV1", "414",
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"S1RAM", "418",
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"S2INT", "440",
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"S2LRV", "444",
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"S2FQL", "448",
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"S2FQH", "44C",
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"S2EV0", "450",
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"S2EV1", "454",
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"S2RAM", "458",
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"S3INT", "480",
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"S3LRV", "484",
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"S3FQL", "488",
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"S3FQH", "48C",
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"S3EV0", "480",
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"S3EV1", "484",
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"S3RAM", "488",
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"S4INT", "4C0",
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"S4LRV", "4C4",
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"S4FQL", "4C8",
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"S4FQH", "4CC",
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"S4EV0", "4C0",
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"S4EV1", "4C4",
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"S4RAM", "4C8",
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"S5INT", "500",
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"S5LRV", "504",
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"S5FQL", "508",
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"S5FQH", "50C",
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"S5EV0", "510",
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"S5EV1", "514",
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"S5RAM", "518",
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"S5SWP", "51C",
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"S6INT", "540",
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"S6LRV", "544",
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"S6FQL", "548",
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"S6FQH", "54C",
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"S6EV0", "550",
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"S6EV1", "554",
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"S6RAM", "558",
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"RESET", "580",
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NULL
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};
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const char** DivPlatformVB::getRegisterSheet() {
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return regCheatSheetVB;
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}
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void DivPlatformVB::acquire(short** buf, size_t len) {
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for (size_t h=0; h<len; h++) {
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cycles=0;
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while (!writes.empty()) {
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QueuedWrite w=writes.front();
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vb->Write(cycles,w.addr,w.val);
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regPool[w.addr>>2]=w.val;
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writes.pop();
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}
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vb->EndFrame(16);
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tempL=0;
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tempR=0;
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for (int i=0; i<6; i++) {
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oscBuf[i]->data[oscBuf[i]->needle++]=(vb->last_output[i][0]+vb->last_output[i][1])*8;
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tempL+=vb->last_output[i][0];
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tempR+=vb->last_output[i][1];
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}
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if (tempL<-32768) tempL=-32768;
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if (tempL>32767) tempL=32767;
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if (tempR<-32768) tempR=-32768;
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if (tempR>32767) tempR=32767;
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buf[0][h]=tempL;
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buf[1][h]=tempR;
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}
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}
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void DivPlatformVB::updateWave(int ch) {
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if (ch>=5) return;
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for (int i=0; i<32; i++) {
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rWrite((ch<<7)+(i<<2),chan[ch].ws.output[i]);
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}
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}
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void DivPlatformVB::writeEnv(int ch, bool upperByteToo) {
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chWrite(ch,0x04,(chan[ch].outVol<<4)|(chan[ch].envLow&15));
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if (ch<5 || upperByteToo) {
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chWrite(ch,0x05,chan[ch].envHigh);
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}
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}
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void DivPlatformVB::tick(bool sysTick) {
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for (int i=0; i<6; 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=VOL_SCALE_LINEAR(chan[i].vol&15,MIN(15,chan[i].std.vol.val),15);
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writeEnv(i);
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}
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if (NEW_ARP_STRAT) {
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chan[i].handleArp();
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} else if (chan[i].std.arp.had) {
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if (!chan[i].inPorta) {
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chan[i].baseFreq=NOTE_PERIODIC(parent->calcArp(chan[i].note,chan[i].std.arp.val));
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}
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chan[i].freqChanged=true;
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}
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if (i==5 && chan[i].std.duty.had) {
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if ((chan[i].std.duty.val&7)!=((chan[i].envHigh>>4)&7)) {
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chan[i].envHigh&=~0x70;
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chan[i].envHigh|=(chan[i].std.duty.val&7)<<4;
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writeEnv(i,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.panL.had) {
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chan[i].pan&=0x0f;
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chan[i].pan|=(chan[i].std.panL.val&15)<<4;
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}
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if (chan[i].std.panR.had) {
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chan[i].pan&=0xf0;
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chan[i].pan|=chan[i].std.panR.val&15;
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}
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if (chan[i].std.panL.had || chan[i].std.panR.had) {
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chWrite(i,0x01,isMuted[i]?0:chan[i].pan);
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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,-32768,32767);
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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].std.phaseReset.had && chan[i].std.phaseReset.val==1) {
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chWrite(i,0x00,0x80);
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}
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if (chan[i].active) {
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if (chan[i].ws.tick() || (chan[i].std.phaseReset.had && chan[i].std.phaseReset.val==1)) {
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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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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);
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if (chan[i].freq<1) chan[i].freq=1;
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if (chan[i].freq>2047) chan[i].freq=2047;
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chan[i].freq=2048-chan[i].freq;
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chWrite(i,0x02,chan[i].freq&0xff);
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chWrite(i,0x03,chan[i].freq>>8);
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if (chan[i].keyOn) {
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}
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if (chan[i].keyOff) {
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chWrite(i,0x04,0);
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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 DivPlatformVB::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_PCE);
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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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chan[c.chan].macroInit(ins);
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if (chan[c.chan].insChanged && ins->fds.initModTableWithFirstWave) {
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for (int i=0; i<32; i++) {
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modTable[i]=ins->fds.modTable[i];
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rWrite(0x280+(i<<2),modTable[i]);
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}
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}
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if (!parent->song.brokenOutVol && !chan[c.chan].std.vol.will) {
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chan[c.chan].outVol=chan[c.chan].vol;
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writeEnv(c.chan);
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}
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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,32,63,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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chan[c.chan].insChanged=true;
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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) {
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writeEnv(c.chan);
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}
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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_STD_NOISE_MODE:
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if (c.chan!=5) break;
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chan[c.chan].envHigh&=~0x70;
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chan[c.chan].envHigh|=(c.value&7)<<4;
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writeEnv(c.chan,true);
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break;
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case DIV_CMD_STD_NOISE_FREQ:
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chan[c.chan].envHigh&=~3;
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chan[c.chan].envHigh|=(c.value>>4)&3;
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chan[c.chan].envLow=c.value&15;
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writeEnv(c.chan);
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break;
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case DIV_CMD_FDS_MOD_DEPTH: // set modulation
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if (c.chan!=4) break;
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modulation=(c.value&15)<<4;
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modType=true;
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chWrite(4,0x07,modulation);
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if (modulation!=0) {
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chan[c.chan].envHigh&=~0x70;
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chan[c.chan].envHigh|=0x40|(c.value&0xf0);
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} else {
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chan[c.chan].envHigh&=~0x70;
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}
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writeEnv(4);
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break;
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case DIV_CMD_GB_SWEEP_TIME: // set sweep
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if (c.chan!=4) break;
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modulation=c.value;
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modType=false;
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chWrite(4,0x07,modulation);
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if (modulation!=0) {
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chan[c.chan].envHigh&=~0x70;
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chan[c.chan].envHigh|=0x40;
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} else {
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chan[c.chan].envHigh&=~0x70;
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}
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writeEnv(4);
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break;
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case DIV_CMD_FDS_MOD_WAVE: { // set modulation wave
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if (c.chan!=4) break;
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DivWavetable* wt=parent->getWave(c.value);
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for (int i=0; i<32; i++) {
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if (wt->max<1 || wt->len<1) {
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modTable[i]=0;
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rWrite(0x280+(i<<2),0);
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} else {
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int data=(wt->data[i*wt->len/32]*255/wt->max)-128;
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if (data<-128) data=-128;
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if (data>127) data=127;
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modTable[i]=data;
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rWrite(0x280+(i<<2),modTable[i]);
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}
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}
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break;
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}
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case DIV_CMD_PANNING: {
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chan[c.chan].pan=(c.value&0xf0)|(c.value2>>4);
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chWrite(c.chan,0x01,isMuted[c.chan]?0:chan[c.chan].pan);
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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+((HACKY_LEGATO_MESS)?(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_PCE));
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}
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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);
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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_CMD_MACRO_OFF:
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chan[c.chan].std.mask(c.value,true);
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break;
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case DIV_CMD_MACRO_ON:
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chan[c.chan].std.mask(c.value,false);
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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 DivPlatformVB::muteChannel(int ch, bool mute) {
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isMuted[ch]=mute;
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chWrite(ch,0x01,isMuted[ch]?0:chan[ch].pan);
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}
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void DivPlatformVB::forceIns() {
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for (int i=0; i<6; 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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chWrite(i,0x01,isMuted[i]?0:chan[i].pan);
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}
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}
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void* DivPlatformVB::getChanState(int ch) {
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return &chan[ch];
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}
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DivMacroInt* DivPlatformVB::getChanMacroInt(int ch) {
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return &chan[ch].std;
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}
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DivDispatchOscBuffer* DivPlatformVB::getOscBuffer(int ch) {
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return oscBuf[ch];
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}
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unsigned char* DivPlatformVB::getRegisterPool() {
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return regPool;
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}
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int DivPlatformVB::getRegisterPoolSize() {
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return 0x180;
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}
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int DivPlatformVB::getRegisterPoolDepth() {
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return 8;
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}
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void DivPlatformVB::reset() {
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while (!writes.empty()) writes.pop();
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memset(regPool,0,0x600);
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for (int i=0; i<6; i++) {
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chan[i]=DivPlatformVB::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,32,63,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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vb->Power();
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tempL=0;
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tempR=0;
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cycles=0;
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curChan=-1;
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modulation=0;
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modType=false;
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memset(modTable,0,32);
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// set per-channel initial values
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for (int i=0; i<6; i++) {
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chWrite(i,0x01,isMuted[i]?0:chan[i].pan);
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chWrite(i,0x05,0x00);
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chWrite(i,0x00,0x80);
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chWrite(i,0x06,i);
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}
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delay=500;
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}
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int DivPlatformVB::getOutputCount() {
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return 2;
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|
}
|
|
|
|
bool DivPlatformVB::keyOffAffectsArp(int ch) {
|
|
return true;
|
|
}
|
|
|
|
float DivPlatformVB::getPostAmp() {
|
|
return 6.0f;
|
|
}
|
|
|
|
void DivPlatformVB::notifyWaveChange(int wave) {
|
|
for (int i=0; i<6; i++) {
|
|
if (chan[i].wave==wave) {
|
|
chan[i].ws.changeWave1(wave);
|
|
updateWave(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
void DivPlatformVB::notifyInsDeletion(void* ins) {
|
|
for (int i=0; i<6; i++) {
|
|
chan[i].std.notifyInsDeletion((DivInstrument*)ins);
|
|
}
|
|
}
|
|
|
|
void DivPlatformVB::setFlags(const DivConfig& flags) {
|
|
chipClock=5000000.0;
|
|
CHECK_CUSTOM_CLOCK;
|
|
rate=chipClock/16;
|
|
for (int i=0; i<6; i++) {
|
|
oscBuf[i]->rate=rate;
|
|
}
|
|
|
|
if (vb!=NULL) {
|
|
delete vb;
|
|
vb=NULL;
|
|
}
|
|
vb=new VSU;
|
|
}
|
|
|
|
void DivPlatformVB::poke(unsigned int addr, unsigned short val) {
|
|
rWrite(addr,val);
|
|
}
|
|
|
|
void DivPlatformVB::poke(std::vector<DivRegWrite>& wlist) {
|
|
for (DivRegWrite& i: wlist) rWrite(i.addr,i.val);
|
|
}
|
|
|
|
int DivPlatformVB::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
|
|
parent=p;
|
|
dumpWrites=false;
|
|
skipRegisterWrites=false;
|
|
for (int i=0; i<6; i++) {
|
|
isMuted[i]=false;
|
|
oscBuf[i]=new DivDispatchOscBuffer;
|
|
}
|
|
vb=NULL;
|
|
setFlags(flags);
|
|
reset();
|
|
return 6;
|
|
}
|
|
|
|
void DivPlatformVB::quit() {
|
|
for (int i=0; i<6; i++) {
|
|
delete oscBuf[i];
|
|
}
|
|
if (vb!=NULL) {
|
|
delete vb;
|
|
vb=NULL;
|
|
}
|
|
}
|
|
|
|
DivPlatformVB::~DivPlatformVB() {
|
|
}
|