FFTNop Class Reference

Apply FFT and IFFT w/o any changes to the frequency domain. More...

#include <FFTEffects.h>

Inheritance diagram for FFTNop:

Public Member Functions
	FFTNop (AudioOutput &out)
	FFTNop (AudioStream &out)
	FFTNop (Print &out)
virtual void	addNotifyAudioChange (AudioInfoSupport &bi)
	Adds target to be notified about audio changes.
virtual AudioInfo	audioInfo () override
	provides the actual input AudioInfo
virtual AudioInfo	audioInfoOut ()
virtual int	availableForWrite () override
bool	begin () override
virtual bool	begin (AudioInfo info)
bool	begin (FFTEffectConfig info)
virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.
FFTEffectConfig	defaultConfig ()
virtual void	end ()
virtual void	flush ()
virtual bool	isDeletable ()
	If true we need to release the related memory in the destructor.
bool	isNotifyActive ()
	Checks if the automatic AudioInfo update is active.
virtual	operator bool ()
virtual bool	removeNotifyAudioChange (AudioInfoSupport &bi)
	Removes a target in order not to be notified about audio changes.
virtual void	setAudioInfo (AudioInfo newInfo) override
	Defines the input AudioInfo.
void	setNotifyActive (bool flag)
	Deactivate/Reactivate automatic AudioInfo updates: (default is active)
size_t	write (const uint8_t *data, size_t len) override
virtual size_t	write (uint8_t ch) override
virtual void	writeSilence (size_t len)

Protected Member Functions
void	effect (AudioFFTBase &fft)
	Do nothing.
void	notifyAudioChange (AudioInfo info)
void	processOutput ()

Static Protected Member Functions
static void	effect_callback (AudioFFTBase &fft)

Protected Attributes
int	_timeout = 10
BufferedWindow	buffered {&hann}
AudioInfo	cfg
StreamCopy	copier
AudioRealFFT	fft
AudioFFTConfig	fft_cfg {fft.defaultConfig(RXTX_MODE)}
Hann	hann
bool	is_active = false
bool	is_notify_active = true
Vector< AudioInfoSupport * >	notify_vector
Print *	p_out = nullptr
SingleBuffer< uint8_t >	tmp {MAX_SINGLE_CHARS}
int	tmpPos = 0

Detailed Description

Apply FFT and IFFT w/o any changes to the frequency domain.

Author

phil schatzmann

Constructor & Destructor Documentation

FFTNop() [1/3]

FFTNop ( AudioStream &  out )

inline

FFTNop() [2/3]

FFTNop ( AudioOutput &  out )

inline

FFTNop() [3/3]

FFTNop ( Print &  out )

inline

Member Function Documentation

addNotifyAudioChange()

virtual void addNotifyAudioChange ( AudioInfoSupport &  bi )

inlinevirtualinherited

Adds target to be notified about audio changes.

Reimplemented in CodecNOP, EncodedAudioOutput, EncodedAudioStream, AACDecoderFDK, DecoderBasic, CodecChain, MP3DecoderHelix, MP3DecoderMAD, OggContainerDecoder, RTSPClient< TcpClient, UdpSocket >, Pipeline, and Pipeline::ModifyingStreamAdapter.

audioInfo()

virtual AudioInfo audioInfo ( )

inlineoverridevirtualinherited

provides the actual input AudioInfo

Implements AudioInfoSupport.

Reimplemented in AdapterPrintToAudioOutput, EncodedAudioOutput, and AdapterAudioStreamToAudioOutput.

audioInfoOut()

virtual AudioInfo audioInfoOut ( )

inlinevirtualinherited

provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream

Reimplemented in PureDataStream, PWMAudioOutput, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, FormatConverterStream, Pipeline, ResampleStream, and ResampleStreamT< TInterpolator >.

availableForWrite()

virtual int availableForWrite ( )

inlineoverridevirtualinherited

Reimplemented from Print.

Reimplemented in AudioESP32ULP, RTSPOutput< Platform >, EncodedAudioOutput, AudioServerEx, AudioSyncWriter, AdapterAudioStreamToAudioOutput, CsvOutput< T >, MemoryOutput, and PWMAudioOutput.

begin() [1/3]

bool begin ( )

inlineoverridevirtualinherited

Reimplemented from AudioOutput.

Reimplemented in FFTPitchShift.

begin() [2/3]

virtual bool begin ( AudioInfo  info )

inlinevirtualinherited

Reimplemented in AudioESP32ULP, RTSPOutput< Platform >, RTTTLOutput< T >, ChannelsSelectOutput, CsvOutput< T >, and EncodedAudioOutput.

begin() [3/3]

bool begin ( FFTEffectConfig  info )

inlineinherited

clearNotifyAudioChange()

virtual void clearNotifyAudioChange ( )

inlinevirtualinherited

Deletes all change notify subscriptions.

Reimplemented in RTSPClient< TcpClient, UdpSocket >.

defaultConfig()

FFTEffectConfig defaultConfig ( )

inlineinherited

effect()

void effect ( AudioFFTBase &  fft )

inlineprotectedvirtual

Do nothing.

Implements FFTEffect.

effect_callback()

static void effect_callback ( AudioFFTBase &  fft )

inlinestaticprotectedinherited

end()

virtual void end ( )

inlinevirtualinherited

Reimplemented in AudioESP32ULP, AudioServerEx, AudioSyncWriter, RTSPOutput< Platform >, PitchShiftOutput< T, BufferT >, MetaDataOutput, EncodedAudioOutput, OggContainerOutput, AdapterAudioStreamToAudioOutput, MetaDataFilter, and PWMAudioOutput.

flush()

virtual void flush ( )

inlinevirtualinherited

Reimplemented from Print.

Reimplemented in MultiOutput, and HexDumpOutput.

isDeletable()

virtual bool isDeletable ( )

inlinevirtualinherited

If true we need to release the related memory in the destructor.

Reimplemented in AdapterPrintToAudioOutput, and AdapterAudioStreamToAudioOutput.

isNotifyActive()

bool isNotifyActive ( )

inlineinherited

Checks if the automatic AudioInfo update is active.

notifyAudioChange()

void notifyAudioChange ( AudioInfo  info )

inlineprotectedinherited

operator bool()

virtual operator bool ( )

inlinevirtualinherited

Reimplemented in RTSPOutput< Platform >, EncodedAudioOutput, and AdapterAudioStreamToAudioOutput.

processOutput()

void processOutput ( )

inlineprotectedinherited

removeNotifyAudioChange()

virtual bool removeNotifyAudioChange ( AudioInfoSupport &  bi )

inlinevirtualinherited

Removes a target in order not to be notified about audio changes.

Reimplemented in RTSPClient< TcpClient, UdpSocket >.

setAudioInfo()

virtual void setAudioInfo ( AudioInfo  info )

inlineoverridevirtualinherited

Defines the input AudioInfo.

Implements AudioInfoSupport.

Reimplemented in ChannelsSelectOutput, AdapterPrintToAudioOutput, MultiOutput, AdapterAudioStreamToAudioOutput, CsvOutput< T >, PWMAudioOutput, and EncodedAudioOutput.

setNotifyActive()

void setNotifyActive ( bool  flag )

inlineinherited

Deactivate/Reactivate automatic AudioInfo updates: (default is active)

write() [1/2]

size_t write ( const uint8_t *  data, size_t  len  )

inlineoverridevirtualinherited

Implements AudioOutput.

write() [2/2]

virtual size_t write ( uint8_t  ch )

inlineoverridevirtualinherited

Reimplemented in MetaDataOutput, and MultiOutput.

writeSilence()

virtual void writeSilence ( size_t  len )

inlinevirtualinherited

Writes n 0 values (= silence)

Parameters

len

Member Data Documentation

_timeout

int _timeout = 10

protectedinherited

buffered

BufferedWindow buffered {&hann}

protectedinherited

cfg

AudioInfo cfg

protectedinherited

copier

StreamCopy copier

protectedinherited

fft

AudioRealFFT fft

protectedinherited

fft_cfg

AudioFFTConfig fft_cfg {fft.defaultConfig(RXTX_MODE)}

protectedinherited

hann

Hann hann

protectedinherited

is_active

bool is_active = false

protectedinherited

is_notify_active

bool is_notify_active = true

protectedinherited

notify_vector

Vector<AudioInfoSupport*> notify_vector

protectedinherited

p_out

Print* p_out = nullptr

protectedinherited

tmp

SingleBuffer<uint8_t> tmp {MAX_SINGLE_CHARS}

protectedinherited

tmpPos

int tmpPos = 0

protectedinherited

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

• src/AudioTools/AudioLibs/FFTEffects.h