reSIDfp::Filter Class Reference

#include <Filter.h>

Inheritance diagram for reSIDfp::Filter:

Public Member Functions
virtual int	clock (int v1, int v2, int v3)=0
void	enable (bool enable)
void	reset ()
void	writeFC_LO (unsigned char fc_lo)
void	writeFC_HI (unsigned char fc_hi)
void	writeRES_FILT (unsigned char res_filt)
void	writeMODE_VOL (unsigned char mode_vol)
virtual void	input (int input)=0

Protected Member Functions
virtual void	updatedCenterFrequency ()=0
virtual void	updateResonance (unsigned char res)=0
virtual void	updatedMixing ()=0

Protected Attributes
unsigned short *	currentGain
	Current volume amplifier setting.
unsigned short *	currentMixer
	Current filter/voice mixer setting.
unsigned short *	currentSummer
	Filter input summer setting.
unsigned short *	currentResonance
	Filter resonance value.
int	Vhp
	Filter highpass state.
int	Vbp
	Filter bandpass state.
int	Vlp
	Filter lowpass state.
int	ve
	Filter external input.
unsigned int	fc
	Filter cutoff frequency.
bool	filt1
	Routing to filter or outside filter.
bool	filt2
bool	filt3
bool	filtE
bool	voice3off
	Switch voice 3 off.
bool	hp
	Highpass, bandpass, and lowpass filter modes.
bool	bp
bool	lp
unsigned char	vol
	Current volume.

Detailed Description

SID filter base class

Member Function Documentation

clock()

virtual int reSIDfp::Filter::clock ( int  v1, int  v2, int  v3  )

pure virtual

SID clocking - 1 cycle

Parameters

v1	voice 1 in
v2	voice 2 in
v3	voice 3 in

Returns

filtered output

Implemented in reSIDfp::Filter6581.

enable()

void reSIDfp::Filter::enable

(

bool

enable

)

Enable filter.

Parameters

enable

reset()

void reSIDfp::Filter::reset

(

)

SID reset.

updatedCenterFrequency()

virtual void reSIDfp::Filter::updatedCenterFrequency ( )

protectedpure virtual

Set filter cutoff frequency.

Implemented in reSIDfp::Filter6581.

updatedMixing()

virtual void reSIDfp::Filter::updatedMixing ( )

protectedpure virtual

Mixing configuration modified (offsets change)

Implemented in reSIDfp::Filter6581.

updateResonance()

virtual void reSIDfp::Filter::updateResonance ( unsigned char  res )

protectedpure virtual

Set filter resonance.

Implemented in reSIDfp::Filter6581.

writeFC_HI()

void reSIDfp::Filter::writeFC_HI

(

unsigned char

fc_hi

)

Write Frequency Cutoff High register.

Parameters

fc_hi

Frequency Cutoff High-Byte

writeFC_LO()

void reSIDfp::Filter::writeFC_LO

(

unsigned char

fc_lo

)

Write Frequency Cutoff Low register.

Parameters

fc_lo

Frequency Cutoff Low-Byte

writeMODE_VOL()

void reSIDfp::Filter::writeMODE_VOL

(

unsigned char

mode_vol

)

Write filter Mode/Volume register.

Parameters

mode_vol

Filter Mode/Volume

writeRES_FILT()

void reSIDfp::Filter::writeRES_FILT

(

unsigned char

res_filt

)

Write Resonance/Filter register.

Parameters

res_filt

Resonance/Filter

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The documentation for this class was generated from the following files:

• Filter.h
• Filter.cpp