HephAudio::ModulationEffect Class Reference

base class for effects that use LFOs. More...

#include <ModulationEffect.h>

Inheritance diagram for HephAudio::ModulationEffect:

Public Member Functions
virtual	~ModulationEffect ()=default
virtual void	ResetInternalState () override
virtual void	Process (AudioBuffer &buffer, size_t startIndex, size_t frameCount) override
virtual void	SetOscillator (const Oscillator &lfo)
virtual double	GetDepth () const
virtual void	SetDepth (double depth)
virtual void	Process (AudioBuffer &buffer)
virtual void	Process (AudioBuffer &buffer, size_t startIndex)
Public Member Functions inherited from HephAudio::DoubleBufferedAudioEffect
virtual	~DoubleBufferedAudioEffect ()=default
Public Member Functions inherited from HephAudio::AudioEffect
virtual	~AudioEffect ()=default
virtual std::string	Name () const =0
virtual bool	HasMTSupport () const
virtual bool	HasRTSupport () const
virtual size_t	GetThreadCount () const
virtual void	SetThreadCount (size_t threadCount)
virtual size_t	CalculateRequiredFrameCount (size_t outputFrameCount, const AudioFormatInfo &formatInfo) const
virtual size_t	CalculateOutputFrameCount (size_t inputFrameCount, const AudioFormatInfo &formatInfo) const
virtual size_t	CalculateAdvanceSize (size_t renderFrameCount, const AudioFormatInfo &formatInfo) const

Protected Member Functions
	ModulationEffect ()
	ModulationEffect (double depth, const Oscillator &lfo)
Protected Member Functions inherited from HephAudio::DoubleBufferedAudioEffect
	DoubleBufferedAudioEffect ()
virtual AudioBuffer	CreateOutputBuffer (const AudioBuffer &inputBuffer, size_t startIndex, size_t frameCount) const
virtual void	InitializeOutputBuffer (const AudioBuffer &inputBuffer, AudioBuffer &outputBuffer, size_t startIndex, size_t frameCount) const
Protected Member Functions inherited from HephAudio::AudioEffect
	AudioEffect ()
virtual void	ProcessST (const AudioBuffer &inputBuffer, AudioBuffer &outputBuffer, size_t startIndex, size_t frameCount)=0
virtual void	ProcessMT (const AudioBuffer &inputBuffer, AudioBuffer &outputBuffer, size_t startIndex, size_t frameCount)

Protected Attributes
Heph::DoubleBuffer	lfoBuffer
double	depth
size_t	lfoIndex
Protected Attributes inherited from HephAudio::AudioEffect
size_t	threadCount

Detailed Description

base class for effects that use LFOs.

Constructor & Destructor Documentation

ModulationEffect() [1/2]

HephAudio::ModulationEffect::ModulationEffect ( )

protected

creates a new instance and initializes it with default values.

ModulationEffect() [2/2]

HephAudio::ModulationEffect::ModulationEffect ( double depth, const Oscillator & lfo )

protected

creates a new instance and initializes it with the provided values.

Parameters

depth	controls the dry/wet mix ratio. Ranges between 0 and 1.
lfo	low-frequency oscillator.

~ModulationEffect()

virtual HephAudio::ModulationEffect::~ModulationEffect ( )

virtualdefault

releases the resources and destroys the instance.

Member Function Documentation

ResetInternalState()

virtual void HephAudio::ModulationEffect::ResetInternalState ( )

overridevirtual

resets the variables internally used for processing.

Reimplemented from HephAudio::AudioEffect.

Reimplemented in HephAudio::Flanger, and HephAudio::Vibrato.

Process() [1/3]

virtual void HephAudio::ModulationEffect::Process ( AudioBuffer & buffer, size_t startIndex, size_t frameCount )

overridevirtual

Applies the effect.

Parameters

buffer	contains the audio data which will be processed.
startIndex	index of the first audio frame to process.
frameCount	number of frames to process.

Reimplemented from HephAudio::DoubleBufferedAudioEffect.

Reimplemented in HephAudio::Flanger, HephAudio::Tremolo, and HephAudio::Vibrato.

SetOscillator()

virtual void HephAudio::ModulationEffect::SetOscillator ( const Oscillator & lfo )

virtual

sets the lfo.

Parameters

lfo	low-frequency oscillator.

GetDepth()

virtual double HephAudio::ModulationEffect::GetDepth ( ) const

virtual

gets the depth.

SetDepth()

virtual void HephAudio::ModulationEffect::SetDepth ( double depth )

virtual

sets the depth.

Parameters

depth

controls the dry/wet mix ratio. Ranges between 0 and 1.

Process() [2/3]

virtual void HephAudio::AudioEffect::Process ( AudioBuffer & buffer )

virtual

Applies the effect.

Parameters

buffer

contains the audio data which will be processed.

Reimplemented from HephAudio::DoubleBufferedAudioEffect.

Reimplemented in HephAudio::Tremolo, and HephAudio::Vibrato.

Process() [3/3]

virtual void HephAudio::AudioEffect::Process ( AudioBuffer & buffer, size_t startIndex )

virtual

Applies the effect.

Parameters

buffer	contains the audio data which will be processed.
startIndex	index of the first audio frame to process.

Reimplemented from HephAudio::DoubleBufferedAudioEffect.

Reimplemented in HephAudio::Tremolo, and HephAudio::Vibrato.

Member Data Documentation

lfoBuffer

Heph::DoubleBuffer HephAudio::ModulationEffect::lfoBuffer

protected

contains one period long data.

depth

double HephAudio::ModulationEffect::depth

protected

controls the dry/wet mix ratio. Ranges between 0 and 1.

lfoIndex

size_t HephAudio::ModulationEffect::lfoIndex

protected

index of the last accessed sample.