#include <juce_DelayLine.h>

Public Member Functions
	DelayLine ()
	DelayLine (int maximumDelayInSamples)
void	setDelay (SampleType newDelayInSamples)
SampleType	getDelay () const
void	prepare (const ProcessSpec &spec)
void	setMaximumDelayInSamples (int maxDelayInSamples)
int	getMaximumDelayInSamples () const noexcept
void	reset ()
void	pushSample (int channel, SampleType sample)
SampleType	popSample (int channel, SampleType delayInSamples=-1, bool updateReadPointer=true)
template<typename ProcessContext>
void	process (const ProcessContext &context) noexcept

Private Member Functions
template<typename T = InterpolationType>
std::enable_if< std::is_same< T, DelayLineInterpolationTypes::None >::value, SampleType >::type	interpolateSample (int channel) const
template<typename T = InterpolationType>
std::enable_if< std::is_same< T, DelayLineInterpolationTypes::Linear >::value, SampleType >::type	interpolateSample (int channel) const
template<typename T = InterpolationType>
std::enable_if< std::is_same< T, DelayLineInterpolationTypes::Lagrange3rd >::value, SampleType >::type	interpolateSample (int channel) const
template<typename T = InterpolationType>
std::enable_if< std::is_same< T, DelayLineInterpolationTypes::Thiran >::value, SampleType >::type	interpolateSample (int channel)
template<typename T = InterpolationType>
std::enable_if< std::is_same< T, DelayLineInterpolationTypes::None >::value, void >::type	updateInternalVariables ()
template<typename T = InterpolationType>
std::enable_if< std::is_same< T, DelayLineInterpolationTypes::Linear >::value, void >::type	updateInternalVariables ()
template<typename T = InterpolationType>
std::enable_if< std::is_same< T, DelayLineInterpolationTypes::Lagrange3rd >::value, void >::type	updateInternalVariables ()
template<typename T = InterpolationType>
std::enable_if< std::is_same< T, DelayLineInterpolationTypes::Thiran >::value, void >::type	updateInternalVariables ()

Private Attributes
double	sampleRate
AudioBuffer< SampleType >	bufferData
std::vector< SampleType >	v
std::vector< int >	writePos
std::vector< int >	readPos
SampleType	delay = 0.0
SampleType	delayFrac = 0.0
int	delayInt = 0
int	totalSize = 4
SampleType	alpha = 0.0

Detailed Description

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>
class juce::dsp::DelayLine< SampleType, InterpolationType >

A delay line processor featuring several algorithms for the fractional delay calculation, block processing, and sample-by-sample processing useful when modulating the delay in real time or creating a standard delay effect with feedback.

Note: If you intend to change the delay in real time, you may want to smooth changes to the delay systematically using either a ramp or a low-pass filter.

See also: SmoothedValue, FirstOrderTPTFilter

@tags{DSP}

Constructor & Destructor Documentation

◆ DelayLine() [1/2]

template<typename SampleType, typename InterpolationType>

DelayLine::DelayLine ( )

Default constructor.

◆ DelayLine() [2/2]

template<typename SampleType, typename InterpolationType>

DelayLine::DelayLine ( int maximumDelayInSamples )

explicit

Constructor.

Member Function Documentation

◆ getDelay()

template<typename SampleType, typename InterpolationType>

SampleType DelayLine::getDelay ( ) const

Returns the current delay in samples.

◆ getMaximumDelayInSamples()

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

int juce::dsp::DelayLine< SampleType, InterpolationType >::getMaximumDelayInSamples ( ) const

inlinenoexcept

Gets the maximum possible delay in samples.

For very short delay times, the result of getMaximumDelayInSamples() may differ from the last value passed to setMaximumDelayInSamples().

◆ interpolateSample() [1/4]

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

template<typename T = InterpolationType>

std::enable_if< std::is_same< T, DelayLineInterpolationTypes::Thiran >::value, SampleType >::type juce::dsp::DelayLine< SampleType, InterpolationType >::interpolateSample ( int channel )

inlineprivate

◆ interpolateSample() [2/4]

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

template<typename T = InterpolationType>

std::enable_if< std::is_same< T, DelayLineInterpolationTypes::Lagrange3rd >::value, SampleType >::type juce::dsp::DelayLine< SampleType, InterpolationType >::interpolateSample ( int channel ) const

inlineprivate

◆ interpolateSample() [3/4]

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

template<typename T = InterpolationType>

std::enable_if< std::is_same< T, DelayLineInterpolationTypes::Linear >::value, SampleType >::type juce::dsp::DelayLine< SampleType, InterpolationType >::interpolateSample ( int channel ) const

inlineprivate

◆ interpolateSample() [4/4]

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

template<typename T = InterpolationType>

std::enable_if< std::is_same< T, DelayLineInterpolationTypes::None >::value, SampleType >::type juce::dsp::DelayLine< SampleType, InterpolationType >::interpolateSample ( int channel ) const

inlineprivate

◆ popSample()

template<typename SampleType, typename InterpolationType>

SampleType DelayLine::popSample	(	int	channel,
		SampleType	delayInSamples = -1,
		bool	updateReadPointer = true )

Pops a single sample from one channel of the delay line.

Use this function to modulate the delay in real time or implement standard delay effects with feedback.

Parameters

channel	the target channel for the delay line.
delayInSamples	sets the wanted fractional delay in samples, or -1 to use the value being used before or set with setDelay function.
updateReadPointer	should be set to true if you use the function once for each sample, or false if you need multi-tap delay capabilities.

See also: setDelay, pushSample, process

◆ prepare()

template<typename SampleType, typename InterpolationType>

void DelayLine::prepare ( const ProcessSpec & spec )

Initialises the processor.

◆ process()

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

template<typename ProcessContext>

void juce::dsp::DelayLine< SampleType, InterpolationType >::process ( const ProcessContext & context )

inlinenoexcept

Processes the input and output samples supplied in the processing context.

Can be used for block processing when the delay is not going to change during processing. The delay must first be set by calling setDelay.

See also: setDelay

◆ pushSample()

template<typename SampleType, typename InterpolationType>

void DelayLine::pushSample	(	int	channel,
		SampleType	sample )

Pushes a single sample into one channel of the delay line.

Use this function and popSample instead of process if you need to modulate the delay in real time instead of using a fixed delay value, or if you want to code a delay effect with a feedback loop.

See also: setDelay, popSample, process

◆ reset()

template<typename SampleType, typename InterpolationType>

void DelayLine::reset ( )

Resets the internal state variables of the processor.

◆ setDelay()

template<typename SampleType, typename InterpolationType>

void DelayLine::setDelay ( SampleType newDelayInSamples )

Sets the delay in samples.

◆ setMaximumDelayInSamples()

template<typename SampleType, typename InterpolationType>

void DelayLine::setMaximumDelayInSamples ( int maxDelayInSamples )

Sets a new maximum delay in samples.

Also clears the delay line.

This may allocate internally, so you should never call it from the audio thread.

◆ updateInternalVariables() [1/4]

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

template<typename T = InterpolationType>

std::enable_if< std::is_same< T, DelayLineInterpolationTypes::Thiran >::value, void >::type juce::dsp::DelayLine< SampleType, InterpolationType >::updateInternalVariables ( )

inlineprivate

◆ updateInternalVariables() [2/4]

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

template<typename T = InterpolationType>

std::enable_if< std::is_same< T, DelayLineInterpolationTypes::Lagrange3rd >::value, void >::type juce::dsp::DelayLine< SampleType, InterpolationType >::updateInternalVariables ( )

inlineprivate

◆ updateInternalVariables() [3/4]

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

template<typename T = InterpolationType>

std::enable_if< std::is_same< T, DelayLineInterpolationTypes::Linear >::value, void >::type juce::dsp::DelayLine< SampleType, InterpolationType >::updateInternalVariables ( )

inlineprivate

◆ updateInternalVariables() [4/4]

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

template<typename T = InterpolationType>

std::enable_if< std::is_same< T, DelayLineInterpolationTypes::None >::value, void >::type juce::dsp::DelayLine< SampleType, InterpolationType >::updateInternalVariables ( )

inlineprivate

Member Data Documentation

◆ alpha

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

SampleType juce::dsp::DelayLine< SampleType, InterpolationType >::alpha = 0.0

private

◆ bufferData

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

AudioBuffer<SampleType> juce::dsp::DelayLine< SampleType, InterpolationType >::bufferData

private

◆ delay

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

SampleType juce::dsp::DelayLine< SampleType, InterpolationType >::delay = 0.0

private

◆ delayFrac

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

SampleType juce::dsp::DelayLine< SampleType, InterpolationType >::delayFrac = 0.0

private

◆ delayInt

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

int juce::dsp::DelayLine< SampleType, InterpolationType >::delayInt = 0

private

◆ readPos

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

std::vector<int> juce::dsp::DelayLine< SampleType, InterpolationType >::readPos

private

◆ sampleRate

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

double juce::dsp::DelayLine< SampleType, InterpolationType >::sampleRate

private

◆ totalSize

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

int juce::dsp::DelayLine< SampleType, InterpolationType >::totalSize = 4

private

◆ v

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

std::vector<SampleType> juce::dsp::DelayLine< SampleType, InterpolationType >::v

private

◆ writePos

template<typename SampleType, typename InterpolationType = DelayLineInterpolationTypes::Linear>

std::vector<int> juce::dsp::DelayLine< SampleType, InterpolationType >::writePos

private

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

/home/runner/work/lmms-fork/lmms-fork/plugins/CarlaBase/carla/source/modules/juce_dsp/processors/juce_DelayLine.h
/home/runner/work/lmms-fork/lmms-fork/plugins/CarlaBase/carla/source/modules/juce_dsp/processors/juce_DelayLine.cpp

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ DelayLine() [1/2]

◆ DelayLine() [2/2]

Member Function Documentation

◆ getDelay()

◆ getMaximumDelayInSamples()

◆ interpolateSample() [1/4]

◆ interpolateSample() [2/4]

◆ interpolateSample() [3/4]

◆ interpolateSample() [4/4]

◆ popSample()

◆ prepare()

◆ process()

◆ pushSample()

◆ reset()

◆ setDelay()

◆ setMaximumDelayInSamples()

◆ updateInternalVariables() [1/4]

◆ updateInternalVariables() [2/4]

◆ updateInternalVariables() [3/4]

◆ updateInternalVariables() [4/4]

Member Data Documentation

◆ alpha

◆ bufferData

◆ delay

◆ delayFrac

◆ delayInt

◆ readPos

◆ sampleRate

◆ totalSize

◆ v

◆ writePos