269 lines
6.9 KiB
C++
269 lines
6.9 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 "pong.h"
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#include "../engine.h"
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#include "../../ta-log.h"
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#define CHIP_DIVIDER 1024
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void DivPlatformPong::acquire(short* bufL, short* bufR, size_t start, size_t len) {
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int out=0;
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for (size_t i=start; i<start+len; i++) {
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if (on) {
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if (--pos<=0) {
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pos=(freq?2:1)<<4;
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flip=!flip;
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}
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out=(flip && !isMuted[0])?32767:0;
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bufL[i]=out;
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oscBuf->data[oscBuf->needle++]=out;
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} else {
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bufL[i]=0;
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oscBuf->data[oscBuf->needle++]=0;
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flip=false;
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}
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}
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}
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void DivPlatformPong::tick(bool sysTick) {
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for (int i=0; i<1; 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 && chan[i].std.vol.val);
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on=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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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 (sysTick) {
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flip=false;
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pos=0;
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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].freqChanged || chan[i].keyOn || chan[i].keyOff) {
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chan[i].freq=parent->calcFreq(chan[i].baseFreq,chan[i].pitch,true,0,chan[i].pitch2,chipClock,CHIP_DIVIDER)-1;
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if (chan[i].freq<0) chan[i].freq=0;
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if (chan[i].freq>1) chan[i].freq=1;
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if (chan[i].keyOn) {
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on=true;
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}
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if (chan[i].keyOff) {
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on=false;
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}
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freq=chan[i].freq;
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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 DivPlatformPong::dispatch(DivCommand c) {
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switch (c.cmd) {
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case DIV_CMD_NOTE_ON:
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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(parent->getIns(chan[c.chan].ins,DIV_INS_BEEPER));
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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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}
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break;
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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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}
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if (chan[c.chan].active) {
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on=chan[c.chan].vol;
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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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return chan[c.chan].vol;
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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_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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if (c.chan==3) break;
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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_BEEPER));
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}
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if (!chan[c.chan].inPorta && c.value && !parent->song.brokenPortaArp && chan[c.chan].std.arp.will) 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 1;
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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 DivPlatformPong::muteChannel(int ch, bool mute) {
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isMuted[ch]=mute;
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}
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void DivPlatformPong::forceIns() {
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for (int i=0; i<1; i++) {
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chan[i].insChanged=true;
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}
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}
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void* DivPlatformPong::getChanState(int ch) {
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return &chan[ch];
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}
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DivMacroInt* DivPlatformPong::getChanMacroInt(int ch) {
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return &chan[ch].std;
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}
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DivDispatchOscBuffer* DivPlatformPong::getOscBuffer(int ch) {
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return oscBuf;
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}
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void DivPlatformPong::reset() {
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for (int i=0; i<1; i++) {
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chan[i]=DivPlatformPong::Channel();
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chan[i].std.setEngine(parent);
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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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on=false;
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lastOn=false;
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freq=0;
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pos=0;
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flip=false;
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memset(regPool,0,2);
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}
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bool DivPlatformPong::keyOffAffectsArp(int ch) {
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return true;
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}
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void DivPlatformPong::setFlags(const DivConfig& flags) {
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chipClock=1000000;
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CHECK_CUSTOM_CLOCK;
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rate=chipClock/64;
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oscBuf->rate=rate;
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}
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void DivPlatformPong::notifyInsDeletion(void* ins) {
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for (int i=0; i<1; i++) {
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chan[i].std.notifyInsDeletion((DivInstrument*)ins);
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}
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}
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void DivPlatformPong::poke(unsigned int addr, unsigned short val) {
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// ???
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}
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void DivPlatformPong::poke(std::vector<DivRegWrite>& wlist) {
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// ???
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}
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int DivPlatformPong::init(DivEngine* p, int channels, int sugRate, const DivConfig& flags) {
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parent=p;
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dumpWrites=false;
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skipRegisterWrites=false;
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for (int i=0; i<1; i++) {
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isMuted[i]=false;
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}
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oscBuf=new DivDispatchOscBuffer;
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setFlags(flags);
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reset();
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return 5;
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}
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void DivPlatformPong::quit() {
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delete oscBuf;
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}
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DivPlatformPong::~DivPlatformPong() {
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}
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