WebCore::AudioBus Class Reference

#include <AudioBus.h>

Inheritance diagram for WebCore::AudioBus:

Public Types
enum	{   ChannelLeft = 0, ChannelRight = 1, ChannelCenter = 2, ChannelMono = 2,   ChannelLFE = 3, ChannelSurroundLeft = 4, ChannelSurroundRight = 5 }
enum	{ LayoutCanonical = 0 }
enum	ChannelInterpretation { Speakers, Discrete }

Public Member Functions
void	setChannelMemory (unsigned channelIndex, float *storage, size_t length)
unsigned	numberOfChannels () const
AudioChannel *	channel (unsigned channel)
const AudioChannel *	channel (unsigned channel) const
AudioChannel *	channelByType (unsigned type)
const AudioChannel *	channelByType (unsigned type) const
size_t	length () const
void	resizeSmaller (size_t newLength)
float	sampleRate () const
void	setSampleRate (float sampleRate)
void	zero ()
void	clearSilentFlag ()
bool	isSilent () const
bool	topologyMatches (const AudioBus &sourceBus) const
void	scale (float scale)
void	reset ()
void	copyFromRange (const AudioBus &sourceBus, unsigned startFrame, unsigned endFrame)
void	copyFrom (const AudioBus &sourceBus, ChannelInterpretation=Speakers)
void	sumFrom (const AudioBus &sourceBus, ChannelInterpretation=Speakers)
void	copyWithGainFrom (const AudioBus &sourceBus, float *lastMixGain, float targetGain)
void	copyWithSampleAccurateGainValuesFrom (const AudioBus &sourceBus, float *gainValues, unsigned numberOfGainValues)
float	maxAbsValue () const
void	normalize ()
Public Member Functions inherited from WTF::ThreadSafeRefCounted< AudioBus >
void	deref () const
void	deref () const
void	deref () const
Public Member Functions inherited from WTF::ThreadSafeRefCountedBase
	ThreadSafeRefCountedBase ()=default
void	ref () const
bool	hasOneRef () const
unsigned	refCount () const
	ThreadSafeRefCountedBase ()=default
void	ref () const
bool	hasOneRef () const
unsigned	refCount () const
	ThreadSafeRefCountedBase ()=default
void	ref () const
bool	hasOneRef () const
unsigned	refCount () const

Static Public Member Functions
static RefPtr< AudioBus >	create (unsigned numberOfChannels, size_t length, bool allocate=true)
static RefPtr< AudioBus >	createBufferFromRange (const AudioBus *sourceBuffer, unsigned startFrame, unsigned endFrame)
static RefPtr< AudioBus >	createBySampleRateConverting (const AudioBus *sourceBus, bool mixToMono, double newSampleRate)
static RefPtr< AudioBus >	createByMixingToMono (const AudioBus *sourceBus)
static PassRefPtr< AudioBus >	loadPlatformResource (const char *name, float sampleRate)

Protected Member Functions
	AudioBus ()
	AudioBus (unsigned numberOfChannels, size_t length, bool allocate)
void	speakersCopyFrom (const AudioBus &)
void	discreteCopyFrom (const AudioBus &)
void	speakersSumFrom (const AudioBus &)
void	discreteSumFrom (const AudioBus &)
void	speakersSumFrom5_1_ToMono (const AudioBus &)
Protected Member Functions inherited from WTF::ThreadSafeRefCounted< AudioBus >
	ThreadSafeRefCounted ()=default
	ThreadSafeRefCounted ()=default
	ThreadSafeRefCounted ()=default
Protected Member Functions inherited from WTF::ThreadSafeRefCountedBase
bool	derefBase () const
bool	derefBase () const
bool	derefBase () const

Protected Attributes
size_t	m_length
Vector< std::unique_ptr< AudioChannel > >	m_channels
int	m_layout
float	m_busGain
std::unique_ptr< AudioFloatArray >	m_dezipperGainValues
bool	m_isFirstTime
float	m_sampleRate

Member Enumeration Documentation

anonymous enum

anonymous enum

Enumerator
ChannelLeft
ChannelRight
ChannelCenter
ChannelMono
ChannelLFE
ChannelSurroundLeft
ChannelSurroundRight

anonymous enum

anonymous enum

Enumerator
LayoutCanonical

ChannelInterpretation

enum WebCore::AudioBus::ChannelInterpretation

Enumerator
Speakers
Discrete

Constructor & Destructor Documentation

AudioBus() [1/2]

WebCore::AudioBus::AudioBus ( )

inlineprotected

AudioBus() [2/2]

WebCore::AudioBus::AudioBus ( unsigned  numberOfChannels, size_t  length, bool  allocate  )

protected

Member Function Documentation

channel() [1/2]

AudioChannel* WebCore::AudioBus::channel ( unsigned  channel )

inline

channel() [2/2]

const AudioChannel* WebCore::AudioBus::channel ( unsigned  channel ) const

inline

channelByType() [1/2]

AudioChannel* WebCore::AudioBus::channelByType

(

unsigned

type

)

channelByType() [2/2]

const AudioChannel* WebCore::AudioBus::channelByType

(

unsigned

type

)

const

clearSilentFlag()

void WebCore::AudioBus::clearSilentFlag

(

)

copyFrom()

void WebCore::AudioBus::copyFrom	(	const AudioBus &	sourceBus,
		ChannelInterpretation	= Speakers
	)

copyFromRange()

void WebCore::AudioBus::copyFromRange	(	const AudioBus &	sourceBus,
		unsigned	startFrame,
		unsigned	endFrame
	)

copyWithGainFrom()

void WebCore::AudioBus::copyWithGainFrom	(	const AudioBus &	sourceBus,
		float *	lastMixGain,
		float	targetGain
	)

copyWithSampleAccurateGainValuesFrom()

void WebCore::AudioBus::copyWithSampleAccurateGainValuesFrom	(	const AudioBus &	sourceBus,
		float *	gainValues,
		unsigned	numberOfGainValues
	)

create()

static RefPtr<AudioBus> WebCore::AudioBus::create ( unsigned  numberOfChannels, size_t  length, bool  allocate = true  )

static

createBufferFromRange()

static RefPtr<AudioBus> WebCore::AudioBus::createBufferFromRange ( const AudioBus *  sourceBuffer, unsigned  startFrame, unsigned  endFrame  )

static

createByMixingToMono()

static RefPtr<AudioBus> WebCore::AudioBus::createByMixingToMono ( const AudioBus *  sourceBus )

static

createBySampleRateConverting()

static RefPtr<AudioBus> WebCore::AudioBus::createBySampleRateConverting ( const AudioBus *  sourceBus, bool  mixToMono, double  newSampleRate  )

static

discreteCopyFrom()

void WebCore::AudioBus::discreteCopyFrom ( const AudioBus &  )

protected

discreteSumFrom()

void WebCore::AudioBus::discreteSumFrom ( const AudioBus &  )

protected

isSilent()

bool WebCore::AudioBus::isSilent

(

)

const

length()

size_t WebCore::AudioBus::length ( void  ) const

inline

loadPlatformResource()

static PassRefPtr<AudioBus> WebCore::AudioBus::loadPlatformResource ( const char *  name, float  sampleRate  )

static

maxAbsValue()

float WebCore::AudioBus::maxAbsValue

(

)

const

normalize()

void WebCore::AudioBus::normalize

(

)

numberOfChannels()

unsigned WebCore::AudioBus::numberOfChannels ( ) const

inline

reset()

void WebCore::AudioBus::reset ( )

inline

resizeSmaller()

void WebCore::AudioBus::resizeSmaller

(

size_t

newLength

)

sampleRate()

float WebCore::AudioBus::sampleRate ( ) const

inline

scale()

void WebCore::AudioBus::scale

(

float

scale

)

setChannelMemory()

void WebCore::AudioBus::setChannelMemory	(	unsigned	channelIndex,
		float *	storage,
		size_t	length
	)

setSampleRate()

void WebCore::AudioBus::setSampleRate ( float  sampleRate )

inline

speakersCopyFrom()

void WebCore::AudioBus::speakersCopyFrom ( const AudioBus &  )

protected

speakersSumFrom()

void WebCore::AudioBus::speakersSumFrom ( const AudioBus &  )

protected

speakersSumFrom5_1_ToMono()

void WebCore::AudioBus::speakersSumFrom5_1_ToMono ( const AudioBus &  )

protected

sumFrom()

void WebCore::AudioBus::sumFrom	(	const AudioBus &	sourceBus,
		ChannelInterpretation	= Speakers
	)

topologyMatches()

bool WebCore::AudioBus::topologyMatches

(

const AudioBus &

sourceBus

)

const

zero()

void WebCore::AudioBus::zero

(

)

Member Data Documentation

m_busGain

float WebCore::AudioBus::m_busGain

protected

m_channels

Vector<std::unique_ptr<AudioChannel> > WebCore::AudioBus::m_channels

protected

m_dezipperGainValues

std::unique_ptr<AudioFloatArray> WebCore::AudioBus::m_dezipperGainValues

protected

m_isFirstTime

bool WebCore::AudioBus::m_isFirstTime

protected

m_layout

int WebCore::AudioBus::m_layout

protected

m_length

size_t WebCore::AudioBus::m_length

protected

m_sampleRate

float WebCore::AudioBus::m_sampleRate

protected

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

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