reverb::TimeStretch Class Reference

#include <TimeStretch.h>

Inheritance diagram for reverb::TimeStretch:

Collaboration diagram for reverb::TimeStretch:

Public Types
using	Ptr = std::shared_ptr< TimeStretch >
Public Types inherited from reverb::Task
using	Ptr = std::shared_ptr< Task >

Public Member Functions
	TimeStretch (juce::AudioProcessor *processor)
	Constructs a TimeStretch object associated with an AudioProcessor. More...
virtual void	updateParams (const juce::AudioProcessorValueTreeState &params, const juce::String &blockID) override
	Updates parameters from processor parameter tree. More...
virtual AudioBlock	exec (AudioBlock ir) override
	Apply time stretching algorithm to input IR buffer to change sample rate. More...
void	prepareIR (juce::AudioSampleBuffer &ir)
	Copies given IR to internal representation and resizes it before processing. More...
int	getOutputNumSamples ()
	Returns expected number of samples after processing. More...
Public Member Functions inherited from reverb::Task
	Task (juce::AudioProcessor *processor)
virtual bool	needsToRun () const
	Tells caller whether block must be run for current block. More...
virtual void	updateSampleRate (double sr)
	Update sample rate for task block. More...

Protected Attributes
float	irLengthS = 3.0f
juce::AudioSampleBuffer	irOrig
std::unique_ptr< soundtouch::SoundTouch >	soundtouch
Protected Attributes inherited from reverb::Task
juce::AudioProcessor *	processor
bool	mustExec = true

Static Protected Attributes
static constexpr double	MAX_IR_LENGTH_S = 5.0f

Additional Inherited Members
Public Attributes inherited from reverb::Task
double	sampleRate
Protected Member Functions inherited from reverb::Task
float	getParam (const juce::AudioProcessorValueTreeState &params, const juce::String &blockId) const
	Internal method used to get (and check) a parameter's value.

Detailed Description

Implements a time stretching algorithm to manage IR buffer length and sample rate.

Definition at line 22 of file TimeStretch.h.

Constructor & Destructor Documentation

TimeStretch()

reverb::TimeStretch::TimeStretch

(

juce::AudioProcessor *

processor

)

Constructs a TimeStretch object associated with an AudioProcessor.

Creates a TimeStretch object with a handle to a SoundTouch instance

Parameters

[in]

processor

Pointer to main processor

Exceptions

std::runtime_error

Definition at line 28 of file TimeStretch.cpp.

Member Function Documentation

exec()

AudioBlock reverb::TimeStretch::exec ( AudioBlock  ir )

overridevirtual

Apply time stretching algorithm to input IR buffer to change sample rate.

Stretch or compress input buffer by a factor proportional to original and desired sample rates.

NOTE: prepareIR() method should be called before to manage buffer size. This will copy the original IR and resize the given buffer to the appropriate size based on sample rate and desired length.

Parameters

[in,out]

ir

Audio sample buffer to process

Implements reverb::Task.

Definition at line 70 of file TimeStretch.cpp.

getOutputNumSamples()

int reverb::TimeStretch::getOutputNumSamples

(

)

Returns expected number of samples after processing.

Parameters

[in]

inputNumSamples

Number of samples in input buffer

Definition at line 145 of file TimeStretch.cpp.

prepareIR()

void reverb::TimeStretch::prepareIR

(

juce::AudioSampleBuffer &

ir

)

Copies given IR to internal representation and resizes it before processing.

Parameters

[in,out]

ir

IR to copy and resize

Definition at line 134 of file TimeStretch.cpp.

updateParams()

void reverb::TimeStretch::updateParams ( const juce::AudioProcessorValueTreeState &  params, const juce::String &  blockId  )

overridevirtual

Updates parameters from processor parameter tree.

Parameters

[in]	params	Processor parameter tree
[in]	blockId	ID of block whose paramters should be checked

Implements reverb::Task.

Definition at line 45 of file TimeStretch.cpp.

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

• Source/TimeStretch.h
• Source/TimeStretch.cpp