reSIDfp::Filter Class Reference

#include <Filter.h>

Inheritance diagram for reSIDfp::Filter:

Public Member Functions
	Filter (FilterModelConfig &fmc)
unsigned short	clock (Voice &v1, Voice &v2, Voice &v3)
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)
void	input (short input)

Protected Member Functions
virtual void	updateCenterFrequency ()=0
void	updateResonance (unsigned char res)
void	updateMixing ()
unsigned int	getFC () const
virtual int	solveIntegrators ()=0

Protected Attributes
int	Vhp = 0
	Filter highpass state.
int	Vbp = 0
	Filter bandpass state.
int	Vlp = 0
	Filter lowpass state.
bool	hp = false
	Highpass, bandpass, and lowpass filter modes.
bool	bp = false
bool	lp = false

Detailed Description

SID filter base class

Member Function Documentation

clock()

RESID_INLINE unsigned short reSIDfp::Filter::clock	(	Voice &	v1,
		Voice &	v2,
		Voice &	v3
	)

SID clocking - 1 cycle

Parameters

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

Returns

filtered output, unsigned 16 bit

enable()

void reSIDfp::Filter::enable

(

bool

enable

)

Enable filter.

Parameters

enable

getFC()

unsigned int reSIDfp::Filter::getFC ( ) const

inlineprotected

Get the filter cutoff register value

input()

void reSIDfp::Filter::input ( short  input )

inline

Apply a signal to EXT-IN

Parameters

input

a signed 16 bit sample

reset()

void reSIDfp::Filter::reset

(

)

SID reset.

updateCenterFrequency()

virtual void reSIDfp::Filter::updateCenterFrequency ( )

protectedpure virtual

Update filter cutoff frequency.

Implemented in reSIDfp::Filter6581.

updateMixing()

void reSIDfp::Filter::updateMixing ( )

protected

Mixing configuration modified (offsets change)

updateResonance()

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

inlineprotected

Update filter resonance.

Parameters

res	the new resonance value

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