124 lines
4.0 KiB
C++
124 lines
4.0 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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#ifndef _AY_H
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#define _AY_H
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#include "../dispatch.h"
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#include "../macroInt.h"
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#include <queue>
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#include "sound/ay8910.h"
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class DivPlatformAY8910: public DivDispatch {
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protected:
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const unsigned char AY8914RegRemap[16]={
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0,4,1,5,2,6,9,8,11,12,13,3,7,10,14,15
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};
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inline unsigned char regRemap(unsigned char reg) { return intellivision?AY8914RegRemap[reg&0x0f]:reg&0x0f; }
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struct Channel {
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unsigned char freqH, freqL;
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int freq, baseFreq, note, pitch, pitch2;
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int ins;
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unsigned char psgMode, autoEnvNum, autoEnvDen;
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signed char konCycles;
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bool active, insChanged, freqChanged, keyOn, keyOff, portaPause, inPorta;
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int vol, outVol;
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unsigned char pan;
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DivMacroInt std;
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void macroInit(DivInstrument* which) {
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std.init(which);
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pitch2=0;
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}
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Channel(): freqH(0), freqL(0), freq(0), baseFreq(0), note(0), pitch(0), pitch2(0), ins(-1), psgMode(1), autoEnvNum(0), autoEnvDen(0), active(false), insChanged(true), freqChanged(false), keyOn(false), keyOff(false), portaPause(false), inPorta(false), vol(0), outVol(15), pan(3) {}
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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(unsigned short a, unsigned char v): addr(a), val(v), addrOrVal(false) {}
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};
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std::queue<QueuedWrite> writes;
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ay8910_device* ay;
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DivDispatchOscBuffer* oscBuf[3];
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unsigned char regPool[16];
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unsigned char lastBusy;
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bool dacMode;
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int dacPeriod;
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int dacRate;
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int dacPos;
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int dacSample;
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unsigned char sampleBank;
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int delay;
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bool extMode;
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unsigned int extClock;
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unsigned char extDiv;
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bool stereo, sunsoft, intellivision, clockSel;
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bool ioPortA, ioPortB;
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unsigned char portAVal, portBVal;
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short oldWrites[16];
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short pendingWrites[16];
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unsigned char ayEnvMode;
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unsigned short ayEnvPeriod;
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short ayEnvSlideLow;
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short ayEnvSlide;
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short* ayBuf[3];
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size_t ayBufLen;
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void updateOutSel(bool immediate=false);
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friend void putDispatchChan(void*,int,int);
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public:
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void setExtClockDiv(unsigned int eclk=COLOR_NTSC, unsigned char ediv=8);
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void acquire(short* bufL, short* bufR, size_t start, 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 flushWrites();
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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(unsigned int flags);
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bool isStereo();
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bool keyOffAffectsArp(int ch);
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DivMacroInt* getChanMacroInt(int ch);
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bool getDCOffRequired();
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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, unsigned int flags);
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void quit();
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DivPlatformAY8910(bool useExtMode=false, unsigned int eclk=COLOR_NTSC, unsigned char ediv=8):
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DivDispatch(),
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extMode(useExtMode),
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extClock(eclk),
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extDiv(ediv) {}
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};
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#endif
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