94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
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/**
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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 _SEGAPCM_H
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#define _SEGAPCM_H
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#include "../dispatch.h"
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#include "../instrument.h"
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#include <queue>
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#include "../macroInt.h"
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class DivPlatformSegaPCM: public DivDispatch {
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protected:
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struct Channel {
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DivMacroInt std;
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unsigned char freqH, freqL;
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int freq, baseFreq, pitch, note;
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unsigned char ins;
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signed char konCycles;
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bool active, insChanged, freqChanged, keyOn, keyOff, inPorta, portaPause, furnacePCM;
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int vol, outVol;
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unsigned char chVolL, chVolR;
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struct PCMChannel {
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int sample;
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unsigned int pos; // <<8
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unsigned short len;
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unsigned char freq;
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PCMChannel(): sample(-1), pos(0), len(0), freq(0) {}
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} pcm;
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Channel(): freqH(0), freqL(0), freq(0), baseFreq(0), pitch(0), note(0), ins(-1), active(false), insChanged(true), freqChanged(false), keyOn(false), keyOff(false), inPorta(false), portaPause(false), furnacePCM(false), vol(0), outVol(0), chVolL(127), chVolR(127) {}
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};
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Channel chan[16];
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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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int delay, baseFreqOff;
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int pcmL, pcmR, pcmCycles;
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unsigned char sampleBank;
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unsigned char lastBusy;
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unsigned char amDepth, pmDepth;
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unsigned char regPool[256];
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bool extMode, useYMFM;
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bool isMuted[16];
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short oldWrites[256];
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short pendingWrites[256];
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friend void putDispatchChan(void*,int,int);
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public:
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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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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();
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void muteChannel(int ch, bool mute);
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void notifyInsChange(int ins);
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void setFlags(unsigned int flags);
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bool isStereo();
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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* getEffectName(unsigned char effect);
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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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~DivPlatformSegaPCM();
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};
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#endif
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