furnace/src/engine/platform/nes.h

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#ifndef _NES_H
#define _NES_H
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#include "../dispatch.h"
#include "../macroInt.h"
class DivPlatformNES: public DivDispatch {
struct Channel {
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int freq, baseFreq, pitch, prevFreq, note;
unsigned char ins, duty, sweep;
bool active, insChanged, freqChanged, sweepChanged, keyOn, keyOff, inPorta, furnaceDac;
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signed char vol, outVol, wave;
DivMacroInt std;
Channel():
freq(0),
baseFreq(0),
pitch(0),
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prevFreq(65535),
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note(0),
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ins(-1),
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duty(0),
sweep(0),
active(false),
insChanged(true),
freqChanged(false),
sweepChanged(false),
keyOn(false),
keyOff(false),
inPorta(false),
furnaceDac(false),
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vol(15),
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outVol(15),
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wave(-1) {}
};
Channel chan[5];
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bool isMuted[5];
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int dacPeriod, dacRate;
unsigned int dacPos;
int dacSample;
unsigned char sampleBank;
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unsigned char apuType;
struct NESAPU* nes;
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float freqBase;
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public:
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 reset();
void forceIns();
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void tick();
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void muteChannel(int ch, bool mute);
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bool keyOffAffectsArp(int ch);
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void setPAL(bool pal);
void notifyInsDeletion(void* ins);
int init(DivEngine* parent, int channels, int sugRate, bool pal);
void quit();
~DivPlatformNES();
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};
#endif