110 lines
3.7 KiB
C++
110 lines
3.7 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 _GA20_H
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#define _GA20_H
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#include "../dispatch.h"
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#include "../../fixedQueue.h"
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#include "../macroInt.h"
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#include "sound/ga20/iremga20.h"
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class DivPlatformGA20: public DivDispatch, public iremga20_intf {
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struct Channel: public SharedChannel<int> {
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int prevFreq;
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unsigned int audPos;
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int sample;
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bool volumeChanged, setPos;
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int resVol;
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int macroVolMul;
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Channel():
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SharedChannel<int>(255),
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prevFreq(-1),
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audPos(0),
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sample(-1),
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volumeChanged(false),
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setPos(false),
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resVol(255),
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macroVolMul(64) {}
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};
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Channel chan[4];
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DivDispatchOscBuffer* oscBuf[4];
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bool isMuted[4];
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struct QueuedWrite {
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unsigned char addr;
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unsigned char val;
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QueuedWrite(): addr(0), val(0) {}
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QueuedWrite(unsigned char a, unsigned char v):
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addr(a),
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val(v) {}
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};
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FixedQueue<QueuedWrite,256> writes;
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unsigned int sampleOffGA20[256];
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bool sampleLoaded[256];
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int delay;
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short* ga20Buf[4];
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size_t ga20BufLen;
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unsigned char* sampleMem;
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size_t sampleMemLen;
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iremga20_device ga20;
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unsigned char regPool[32];
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friend void putDispatchChip(void*,int);
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friend void putDispatchChan(void*,int,int);
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void chWrite(unsigned char ch, unsigned int addr, unsigned char val);
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public:
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virtual u8 read_byte(u32 address) override;
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virtual void acquire(short** buf, size_t len) override;
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virtual int dispatch(DivCommand c) override;
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virtual void* getChanState(int chan) override;
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virtual DivMacroInt* getChanMacroInt(int ch) override;
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virtual DivSamplePos getSamplePos(int ch) override;
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virtual DivDispatchOscBuffer* getOscBuffer(int chan) override;
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virtual unsigned char* getRegisterPool() override;
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virtual int getRegisterPoolSize() override;
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virtual void reset() override;
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virtual void forceIns() override;
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virtual void tick(bool sysTick=true) override;
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virtual void muteChannel(int ch, bool mute) override;
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virtual int getOutputCount() override;
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virtual void notifyInsChange(int ins) override;
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virtual void notifyWaveChange(int wave) override;
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virtual void notifyInsDeletion(void* ins) override;
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virtual void setFlags(const DivConfig& flags) override;
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virtual void poke(unsigned int addr, unsigned short val) override;
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virtual void poke(std::vector<DivRegWrite>& wlist) override;
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virtual const char** getRegisterSheet() override;
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virtual const void* getSampleMem(int index = 0) override;
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virtual size_t getSampleMemCapacity(int index = 0) override;
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virtual size_t getSampleMemUsage(int index = 0) override;
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virtual bool isSampleLoaded(int index, int sample) override;
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virtual void renderSamples(int chipID) override;
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virtual int init(DivEngine* parent, int channels, int sugRate, const DivConfig& flags) override;
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virtual void quit() override;
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DivPlatformGA20():
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DivDispatch(),
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iremga20_intf(),
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ga20(*this) {}
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};
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#endif
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