WebCore::DynamicsCompressor Class Reference

#include <DynamicsCompressor.h>

Classes
struct	ZeroPoleFilterPack4

Public Types
enum	{   ParamThreshold, ParamKnee, ParamRatio, ParamAttack,   ParamRelease, ParamPreDelay, ParamReleaseZone1, ParamReleaseZone2,   ParamReleaseZone3, ParamReleaseZone4, ParamPostGain, ParamFilterStageGain,   ParamFilterStageRatio, ParamFilterAnchor, ParamEffectBlend, ParamReduction,   ParamLast }

Public Member Functions
	DynamicsCompressor (float sampleRate, unsigned numberOfChannels)
void	process (const AudioBus *sourceBus, AudioBus *destinationBus, unsigned framesToProcess)
void	reset ()
void	setNumberOfChannels (unsigned)
void	setParameterValue (unsigned parameterID, float value)
float	parameterValue (unsigned parameterID)
float	sampleRate () const
float	nyquist () const
double	tailTime () const
double	latencyTime () const

Protected Member Functions
void	initializeParameters ()
void	setEmphasisStageParameters (unsigned stageIndex, float gain, float normalizedFrequency)
void	setEmphasisParameters (float gain, float anchorFreq, float filterStageRatio)

Protected Attributes
unsigned	m_numberOfChannels
float	m_parameters [ParamLast]
float	m_sampleRate
float	m_lastFilterStageRatio
float	m_lastAnchor
float	m_lastFilterStageGain
Vector< std::unique_ptr< ZeroPoleFilterPack4 > >	m_preFilterPacks
Vector< std::unique_ptr< ZeroPoleFilterPack4 > >	m_postFilterPacks
std::unique_ptr< const float *[]>	m_sourceChannels
std::unique_ptr< float *[]>	m_destinationChannels
DynamicsCompressorKernel	m_compressor

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
ParamThreshold
ParamKnee
ParamRatio
ParamAttack
ParamRelease
ParamPreDelay
ParamReleaseZone1
ParamReleaseZone2
ParamReleaseZone3
ParamReleaseZone4
ParamPostGain
ParamFilterStageGain
ParamFilterStageRatio
ParamFilterAnchor
ParamEffectBlend
ParamReduction
ParamLast

Constructor & Destructor Documentation

DynamicsCompressor()

WebCore::DynamicsCompressor::DynamicsCompressor	(	float	sampleRate,
		unsigned	numberOfChannels
	)

Member Function Documentation

initializeParameters()

void WebCore::DynamicsCompressor::initializeParameters ( )

protected

latencyTime()

double WebCore::DynamicsCompressor::latencyTime ( ) const

inline

nyquist()

float WebCore::DynamicsCompressor::nyquist ( ) const

inline

parameterValue()

float WebCore::DynamicsCompressor::parameterValue

(

unsigned

parameterID

)

process()

void WebCore::DynamicsCompressor::process	(	const AudioBus *	sourceBus,
		AudioBus *	destinationBus,
		unsigned	framesToProcess
	)

reset()

void WebCore::DynamicsCompressor::reset

(

)

sampleRate()

float WebCore::DynamicsCompressor::sampleRate ( ) const

inline

setEmphasisParameters()

void WebCore::DynamicsCompressor::setEmphasisParameters ( float  gain, float  anchorFreq, float  filterStageRatio  )

protected

setEmphasisStageParameters()

void WebCore::DynamicsCompressor::setEmphasisStageParameters ( unsigned  stageIndex, float  gain, float  normalizedFrequency  )

protected

setNumberOfChannels()

void WebCore::DynamicsCompressor::setNumberOfChannels

(

unsigned

)

setParameterValue()

void WebCore::DynamicsCompressor::setParameterValue	(	unsigned	parameterID,
		float	value
	)

tailTime()

double WebCore::DynamicsCompressor::tailTime ( ) const

inline

Member Data Documentation

m_compressor

DynamicsCompressorKernel WebCore::DynamicsCompressor::m_compressor

protected

m_destinationChannels

std::unique_ptr<float*[]> WebCore::DynamicsCompressor::m_destinationChannels

protected

m_lastAnchor

float WebCore::DynamicsCompressor::m_lastAnchor

protected

m_lastFilterStageGain

float WebCore::DynamicsCompressor::m_lastFilterStageGain

protected

m_lastFilterStageRatio

float WebCore::DynamicsCompressor::m_lastFilterStageRatio

protected

m_numberOfChannels

unsigned WebCore::DynamicsCompressor::m_numberOfChannels

protected

m_parameters

float WebCore::DynamicsCompressor::m_parameters[ParamLast]

protected

m_postFilterPacks

Vector<std::unique_ptr<ZeroPoleFilterPack4> > WebCore::DynamicsCompressor::m_postFilterPacks

protected

m_preFilterPacks

Vector<std::unique_ptr<ZeroPoleFilterPack4> > WebCore::DynamicsCompressor::m_preFilterPacks

protected

m_sampleRate

float WebCore::DynamicsCompressor::m_sampleRate

protected

m_sourceChannels

std::unique_ptr<const float*[]> WebCore::DynamicsCompressor::m_sourceChannels

protected

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

• Source/WebCore/platform/audio/DynamicsCompressor.h