e4b9a6d1d9
as of now compound systems (Genesis and Arcade) are translated to separate chips. this improves audio quality and makes things easier. it also allows you to change the volume of each chip on a Genesis. also adds SegaPCM system with 16 channels!
94 lines
3.1 KiB
C++
94 lines
3.1 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 _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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