ParabolicInterpolator Struct Reference

Parabolic interpolation using y[0]..y[3]. More...

#include <ResampleStreamT.h>

Inheritance diagram for ParabolicInterpolator:

Public Member Functions
void	addValue (float value)
	Adds a new value to the buffer, discarding the oldest.
bool	begin ()
	Constructor. Initializes the buffer with four zeros.
bool	getValue (float &newValue)
	Gets the next interpolated value.
	operator bool () const
	Returns true if there are more values to read.
void	setStepSize (float step)
	Sets the step size for interpolation.
float	value (float *y, float xf)
	Computes the parabolic interpolation.
float	valueExt (float *y, float xf)
int	vectorSize ()
	Minimum number of values required for interpolation.

Protected Attributes
float	step = 0
float	step_size = 1.0f
	Step size for resampling, default is 1.0.
SingleBuffer< float >	values
	Buffer holding the last 4 values for interpolation.

Detailed Description

Parabolic interpolation using y[0]..y[3].

Valid for xf in [0,3].

Member Function Documentation

addValue()

void addValue ( float  value )

inlineinherited

Adds a new value to the buffer, discarding the oldest.

Parameters

value

The new sample value to add.

getValue()

bool getValue ( float &  newValue )

inlineinherited

Gets the next interpolated value.

Parameters

newValue

Reference to store the interpolated value.

Returns

True if a value was produced, false if more input is needed.

setStepSize()

void setStepSize ( float  step )

inlineinherited

Sets the step size for interpolation.

Parameters

step	The new step size.

value()

float value ( float *  y, float  xf  )

inlinevirtual

Computes the parabolic interpolation.

Parameters

y	Pointer to at least 4 values.
xf	The fractional index for interpolation.

Returns

Interpolated value.

Implements BaseInterpolator.

vectorSize()

int vectorSize ( )

inlinevirtual

Minimum number of values required for interpolation.

Implements BaseInterpolator.

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The documentation for this struct was generated from the following file:

• src/AudioTools/CoreAudio/ResampleStreamT.h