BSplineInterpolator Struct Reference

Cubic B-spline interpolation using y[0]..y[3]. More...

#include <ResampleStreamT.h>

Inheritance diagram for BSplineInterpolator:

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 cubic B-spline 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

Cubic B-spline 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.

begin()

bool begin ( )

inlineinherited

Constructor. Initializes the buffer with four zeros.

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.

operator bool()

operator bool ( ) const

inlineinherited

Returns true if there are more values to read.

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 cubic B-spline interpolation.

Parameters

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

Returns

Interpolated value.

Implements BaseInterpolator.

valueExt()

float valueExt ( float *  y, float  xf  )

inlineinherited

vectorSize()

int vectorSize ( )

inlinevirtual

Minimum number of values required for interpolation.

Implements BaseInterpolator.

Member Data Documentation

step

float step = 0

protectedinherited

step_size

float step_size = 1.0f

protectedinherited

Step size for resampling, default is 1.0.

values

SingleBuffer<float> values

protectedinherited

Buffer holding the last 4 values for interpolation.

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

• src/AudioTools/CoreAudio/ResampleStreamT.h