158 lines
4.3 KiB
C++
158 lines
4.3 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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#ifndef _AY8930_H
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#define _AY8930_H
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#include "../dispatch.h"
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#include "../fixedQueue.h"
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#include "sound/ay8910.h"
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class DivPlatformAY8930: public DivDispatch {
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protected:
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struct Channel: public SharedChannel<int> {
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struct Envelope {
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unsigned char mode;
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unsigned short period;
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short slideLow;
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short slide;
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Envelope():
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mode(0),
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period(0),
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slideLow(0),
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slide(0) {}
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} envelope;
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struct PSGMode {
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union {
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struct {
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unsigned char tone: 1;
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unsigned char noise: 1;
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unsigned char envelope: 1;
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unsigned char dac: 1;
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};
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unsigned char val=1;
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};
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unsigned char getTone() {
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return dac?0:(tone<<0);
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}
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unsigned char getNoise() {
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return dac?0:(noise<<1);
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}
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unsigned char getEnvelope() {
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return dac?0:(envelope<<2);
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}
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PSGMode(unsigned char v=0):
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val(v) {}
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};
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PSGMode curPSGMode;
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PSGMode nextPSGMode;
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struct DAC {
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int sample, rate, period, pos, out;
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unsigned char furnaceDAC: 1;
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DAC():
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sample(-1),
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rate(0),
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period(0),
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pos(0),
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out(0),
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furnaceDAC(0) {}
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} dac;
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unsigned char autoEnvNum, autoEnvDen, duty;
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signed char konCycles;
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Channel():
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SharedChannel<int>(31),
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envelope(Envelope()),
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curPSGMode(PSGMode(0)),
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nextPSGMode(PSGMode(1)),
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dac(DAC()),
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autoEnvNum(0),
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autoEnvDen(0),
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duty(4),
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konCycles(0) {}
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};
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Channel chan[3];
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bool isMuted[3];
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struct QueuedWrite {
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unsigned short addr;
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unsigned char val;
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bool addrOrVal;
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QueuedWrite(): addr(0), val(0), addrOrVal(false) {}
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QueuedWrite(unsigned short a, unsigned char v): addr(a), val(v), addrOrVal(false) {}
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};
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FixedQueue<QueuedWrite,128> writes;
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ay8930_device* ay;
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DivDispatchOscBuffer* oscBuf[3];
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unsigned char regPool[32];
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unsigned char ayNoiseAnd, ayNoiseOr;
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unsigned char stereoSep;
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bool bank;
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unsigned char sampleBank;
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int delay;
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bool extMode, stereo, clockSel;
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bool ioPortA, ioPortB;
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unsigned char portAVal, portBVal;
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short oldWrites[32];
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short pendingWrites[32];
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short* ayBuf[3];
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size_t ayBufLen;
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void runDAC();
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void checkWrites();
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void updateOutSel(bool immediate=false);
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void immWrite(unsigned char a, unsigned char v);
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friend void putDispatchChip(void*,int);
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friend void putDispatchChan(void*,int,int);
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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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int getOutputCount();
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bool keyOffAffectsArp(int ch);
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DivMacroInt* getChanMacroInt(int ch);
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DivSamplePos getSamplePos(int ch);
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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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void quit();
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};
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#endif
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