// license:BSD-3-Clause
// copyright-holders:Peter Trauner
#ifndef MAME_SOUND_SIDVOICE_H
#define MAME_SOUND_SIDVOICE_H
#pragma once
/*
approximation of the sid6581 chip
this part is for 1 (of the 3) voices of a chip
*/
struct SID6581_t;
struct sidOperator
{
struct sw_storage
{
uint16_t len;
#if defined(DIRECT_FIXPOINT)
uint32_t stp;
#else
uint32_t pnt;
int16_t stp;
#endif
};
SID6581_t *sid;
uint8_t reg[7];
uint32_t SIDfreq;
uint16_t SIDpulseWidth;
uint8_t SIDctrl;
uint8_t SIDAD, SIDSR;
sidOperator* carrier;
sidOperator* modulator;
int sync;
uint16_t pulseIndex, newPulseIndex;
uint16_t curSIDfreq;
uint16_t curNoiseFreq;
uint8_t output;//, outputMask;
char filtVoiceMask;
int filtEnabled;
float filtLow, filtRef;
int8_t filtIO;
int32_t cycleLenCount;
#if defined(DIRECT_FIXPOINT)
cpuLword cycleLen, cycleAddLen;
#else
uint32_t cycleAddLenPnt;
uint16_t cycleLen, cycleLenPnt;
#endif
int8_t (*outProc)(sidOperator *);
void (*waveProc)(sidOperator *);
#if defined(DIRECT_FIXPOINT)
cpuLword waveStep, waveStepAdd;
#else
uint16_t waveStep, waveStepAdd;
uint32_t waveStepPnt, waveStepAddPnt;
#endif
uint16_t waveStepOld;
sw_storage wavePre[2];
#if defined(DIRECT_FIXPOINT) && defined(LARGE_NOISE_TABLE)
cpuLword noiseReg;
#elif defined(DIRECT_FIXPOINT)
cpuLBword noiseReg;
#else
uint32_t noiseReg;
#endif
uint32_t noiseStep, noiseStepAdd;
uint8_t noiseOutput;
int noiseIsLocked;
uint8_t ADSRctrl;
// int gateOnCtrl, gateOffCtrl;
uint16_t (*ADSRproc)(sidOperator *);
#ifdef SID_FPUENVE
float fenveStep, fenveStepAdd;
uint32_t enveStep;
#elif defined(DIRECT_FIXPOINT)
cpuLword enveStep, enveStepAdd;
#else
uint16_t enveStep, enveStepAdd;
uint32_t enveStepPnt, enveStepAddPnt;
#endif
uint8_t enveVol, enveSusVol;
uint16_t enveShortAttackCount;
void clear();
void set();
void set2();
static int8_t wave_calc_normal(sidOperator *pVoice);
private:
void wave_calc_cycle_len();
};
typedef int8_t (*ptr2sidFunc)(sidOperator *);
typedef uint16_t (*ptr2sidUwordFunc)(sidOperator *);
typedef void (*ptr2sidVoidFunc)(sidOperator *);
void sidInitWaveformTables(int type);
void sidInitMixerEngine(running_machine &machine);
#if 0
extern ptr2sidVoidFunc sid6581ModeNormalTable[16];
extern ptr2sidVoidFunc sid6581ModeRingTable[16];
extern ptr2sidVoidFunc sid8580ModeNormalTable[16];
extern ptr2sidVoidFunc sid8580ModeRingTable[16];
#endif
#endif // MAME_SOUND_SIDVOICE_H