108 lines
2.7 KiB
C++
108 lines
2.7 KiB
C++
#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <assert.h>
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class SoundUnit {
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signed char SCsine[256];
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signed char SCtriangle[256];
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signed char SCpantabL[256];
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signed char SCpantabR[256];
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unsigned int ocycle[8];
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unsigned int cycle[8];
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int rcycle[8];
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unsigned int lfsr[8];
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signed char ns[8];
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int fns[8];
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int nsL[8];
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int nsR[8];
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int nslow[8];
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int nshigh[8];
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int nsband[8];
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int tnsL, tnsR;
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unsigned char ilBufPeriod;
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unsigned short ilBufPos;
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signed char ilFeedback0;
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signed char ilFeedback1;
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unsigned short oldfreq[8];
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unsigned short oldflags[8];
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unsigned int pcmSize;
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bool dsOut;
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short dsCounterL, dsCounterR;
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public:
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unsigned short resetfreq[8];
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unsigned short voldcycles[8];
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unsigned short volicycles[8];
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unsigned short fscycles[8];
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unsigned char sweep[8];
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unsigned short swvolt[8];
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unsigned short swfreqt[8];
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unsigned short swcutt[8];
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unsigned short pcmdec[8];
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struct SUChannel {
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unsigned short freq;
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signed char vol;
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signed char pan;
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union {
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unsigned short flags;
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struct {
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unsigned char shape: 3;
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unsigned char pcm: 1;
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unsigned char ring: 1;
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unsigned char fmode: 3;
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unsigned char resosc: 1;
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unsigned char resfilt: 1;
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unsigned char pcmloop: 1;
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unsigned char restim: 1;
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unsigned char swfreq: 1;
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unsigned char swvol: 1;
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unsigned char swcut: 1;
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unsigned char padding: 1;
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};
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} flags;
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unsigned short cutoff;
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unsigned char duty;
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unsigned char reson;
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unsigned short pcmpos;
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unsigned short pcmbnd;
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unsigned short pcmrst;
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struct {
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unsigned short speed;
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unsigned char amt: 7;
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unsigned char dir: 1;
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unsigned char bound;
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} swfreq;
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struct {
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unsigned short speed;
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unsigned char amt: 5;
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unsigned char dir: 1;
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unsigned char loop: 1;
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unsigned char loopi: 1;
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unsigned char bound;
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} swvol;
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struct {
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unsigned short speed;
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unsigned char amt: 7;
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unsigned char dir: 1;
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unsigned char bound;
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} swcut;
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unsigned char special1C;
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unsigned char special1D;
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unsigned short restimer;
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} chan[8];
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signed char pcm[65536];
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bool muted[8];
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void SetIL0(unsigned char addr);
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void Write(unsigned char addr, unsigned char data);
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void NextSample(short* l, short* r);
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inline int GetSample(int ch) {
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int ret=(nsL[ch]+nsR[ch])>>1;
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if (ret<-32768) ret=-32768;
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if (ret>32767) ret=32767;
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return ret;
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}
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void Init(int sampleMemSize=8192, bool dsOutMode=false);
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void Reset();
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SoundUnit();
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};
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