214 lines
5.6 KiB
C++
214 lines
5.6 KiB
C++
/**
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* Furnace Tracker - multi-system chiptune tracker
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* Copyright (C) 2021-2024 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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#ifndef _SID3_H
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#define _SID3_H
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#include "../dispatch.h"
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#include "../../fixedQueue.h"
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#include "sound/sid3.h"
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class DivPlatformSID3: public DivDispatch {
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struct Channel: public SharedChannel<signed short> {
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int prevFreq;
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unsigned char wave, special_wave, attack, decay, sustain, sr, release;
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unsigned short duty;
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bool resetMask, resetFilter, resetDuty, gate, ring, sync, phase, oneBitNoise;
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bool phaseReset, envReset, phaseResetNoise;
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bool noiseFreqChanged;
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unsigned char vol;
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unsigned char noise_mode;
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unsigned char mix_mode;
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unsigned char ringSrc, syncSrc, phaseSrc;
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unsigned char panLeft, panRight;
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unsigned int noiseFreq;
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bool independentNoiseFreq;
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struct Filter
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{
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unsigned short cutoff;
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unsigned char resonance;
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unsigned char output_volume;
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unsigned char distortion_level;
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unsigned char mode;
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bool enabled;
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unsigned char filter_matrix;
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Filter():
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cutoff(0),
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resonance(0),
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output_volume(0),
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distortion_level(0),
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mode(0),
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enabled(false),
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filter_matrix(0) {}
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} filt[SID3_NUM_FILTERS];
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int noise_baseNoteOverride;
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bool noise_fixedArp;
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int noise_arpOff;
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int noise_pitch2;
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bool noise_hasArp;
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bool noise_hasPitch;
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void handleArpNoise(int offset=0)
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{
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DivMacroStruct& m = this->std.op[3].am;
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if (m.had) {
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noise_hasArp=true;
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if (m.val<0) {
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if (!(m.val&0x40000000)) {
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noise_baseNoteOverride=(m.val|0x40000000)+offset;
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noise_fixedArp=true;
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} else {
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noise_arpOff=m.val;
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noise_fixedArp=false;
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}
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} else {
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if (m.val&0x40000000) {
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noise_baseNoteOverride=(m.val&(~0x40000000))+offset;
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noise_fixedArp=true;
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} else {
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noise_arpOff=m.val;
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noise_fixedArp=false;
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}
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}
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noiseFreqChanged=true;
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}
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else
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{
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noise_hasArp=false;
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}
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}
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void handlePitchNoise()
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{
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DivMacroStruct& m = this->std.op[0].ar;
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if (m.had) {
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noise_hasPitch=true;
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if (m.mode) {
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noise_pitch2+=m.val;
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CLAMP_VAR(noise_pitch2,-131071,131071);
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} else {
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noise_pitch2=m.val;
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}
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noiseFreqChanged=true;
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}
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else
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{
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noise_hasPitch=false;
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}
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}
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Channel():
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SharedChannel<signed short>(SID3_MAX_VOL),
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prevFreq(0x1ffff),
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wave(0),
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special_wave(0),
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attack(0),
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decay(0),
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sustain(0),
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sr(0),
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release(0),
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duty(0),
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resetMask(false),
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resetFilter(false),
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resetDuty(false),
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gate(true),
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ring(false),
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sync(false),
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phase(false),
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oneBitNoise(false),
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phaseReset(false),
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envReset(false),
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phaseResetNoise(false),
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noiseFreqChanged(false),
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vol(SID3_MAX_VOL),
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noise_mode(0),
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mix_mode(0),
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ringSrc(0),
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syncSrc(0),
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phaseSrc(0),
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panLeft(0xff),
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panRight(0xff),
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noiseFreq(0),
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independentNoiseFreq(false) {}
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};
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Channel chan[SID3_NUM_CHANNELS];
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DivDispatchOscBuffer* oscBuf[SID3_NUM_CHANNELS];
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struct QueuedWrite {
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unsigned short addr;
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unsigned char val;
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QueuedWrite(): addr(0), val(0) {}
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QueuedWrite(unsigned short a, unsigned char v): addr(a), val(v) {}
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};
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FixedQueue<QueuedWrite,SID3_NUM_REGISTERS * 4> writes;
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unsigned char writeOscBuf;
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SID3* sid3;
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unsigned char regPool[SID3_NUM_REGISTERS];
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bool isMuted[SID3_NUM_CHANNELS];
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friend void putDispatchChip(void*,int);
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friend void putDispatchChan(void*,int,int);
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void updateFlags(int channel, bool gate);
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void updateFilter(int channel, int filter);
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void updateFreq(int channel);
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void updateNoiseFreq(int channel);
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void updateDuty(int channel);
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void updateEnvelope(int channel);
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void updatePanning(int channel);
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public:
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void acquire(short** buf, size_t len);
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int dispatch(DivCommand c);
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void* getChanState(int chan);
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DivDispatchOscBuffer* getOscBuffer(int chan);
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unsigned char* getRegisterPool();
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int getRegisterPoolSize();
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void reset();
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void forceIns();
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void tick(bool sysTick=true);
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void muteChannel(int ch, bool mute);
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void setFlags(const DivConfig& flags);
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void notifyInsChange(int ins);
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float getPostAmp();
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bool getDCOffRequired();
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DivMacroInt* getChanMacroInt(int ch);
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DivChannelModeHints getModeHints(int chan);
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void notifyInsDeletion(void* ins);
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void poke(unsigned int addr, unsigned short val);
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void poke(std::vector<DivRegWrite>& wlist);
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const char** getRegisterSheet();
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int init(DivEngine* parent, int channels, int sugRate, const DivConfig& flags);
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int getOutputCount();
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void quit();
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~DivPlatformSID3();
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};
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#endif
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