AudioEffectStream Class Reference

EffectsStream supporting variable bits_per_sample. This class is only available when __cplusplus >= 201703L. Otherwise AudioEffectStream results in using AudioEffectStream = AudioEffectStreamT<effect_t>;. More...

#include <AudioEffects.h>

Inheritance diagram for AudioEffectStream:

Collaboration diagram for AudioEffectStream:

Public Member Functions
	AudioEffectStream ()=default
	AudioEffectStream (Print &out)
	AudioEffectStream (Stream &io)
void	addEffect (AudioEffect &effect)
	Adds an effect object (by reference)
void	addEffect (AudioEffect *effect)
	Adds an effect using a pointer.
void	addEffect (int channel, AudioEffect &effect)
	Adds an effect object (by reference) directly to a single channel's own chain.
void	addEffect (int channel, AudioEffect *effect)
	Adds an effect using a pointer directly to a single channel's own chain.
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 ()
int	available () override
int	availableForWrite () override
bool	begin ()
bool	begin (AudioInfo cfg)
int	channelCount ()
	Provides the number of channels that have their own effect chain (valid after begin())
AudioEffectCommon &	channelEffects (int channel)
	Provides access to a single channel's own effect chain (valid after begin())
void	clear ()
	deletes all defined effects
virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.
AudioInfo	defaultConfig ()
void	end () override
AudioEffect *	findEffect (int id)
	Finds an effect by id.
void	flush () override
bool	isNotifyActive ()
	Checks if the automatic AudioInfo update is active.
virtual	operator bool ()
AudioEffect *	operator[] (int idx)
	gets an effect by index
size_t	readBytes (uint8_t *data, size_t len) override
virtual size_t	readSilence (uint8_t *buffer, size_t length)
	Source to generate silence: just sets the buffer to 0.
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	setInput (Stream &io)
void	setNotifyActive (bool flag)
	Deactivate/Reactivate automatic AudioInfo updates: (default is active)
virtual void	setOutput (AudioOutput &out)
	Defines/Changes the output target and registers for audio change notifications.
void	setOutput (Print &print)
	Defines/Changes the output target.
void	setOutput (Stream &io)
virtual void	setStream (AudioStream &io)
	Defines/Changes the input & output and registers for audio change notifications.
void	setStream (Stream &io)
	Defines/Changes the input & output.
void	setWriteBufferSize (int size)
size_t	size ()
	Provides the actual number of defined effects.
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)
	Writes len bytes of silence (=0).

Protected Member Functions
virtual int	not_supported (int out, const char *msg="")
void	notifyAudioChange (AudioInfo info)
void	refillReadBuffer ()
	Refill small read buffer (e.g. 8 bytes) to avoid single byte reads when calling read()

Protected Attributes
int	_timeout = 10
AudioInfo	info
bool	is_notify_active = true
Vector< AudioInfoSupport * >	notify_vector
Stream *	p_io =nullptr
Print *	p_out =nullptr
RingBuffer< uint8_t >	tmp_in {0}
RingBuffer< uint8_t >	tmp_out {0}
std::variant< AudioEffectStreamT< int16_t >, AudioEffectStreamT< int24_t >, AudioEffectStreamT< int32_t > >	variant
int	write_buffer_size = MAX_SINGLE_CHARS

Detailed Description

EffectsStream supporting variable bits_per_sample. This class is only available when __cplusplus >= 201703L. Otherwise AudioEffectStream results in using AudioEffectStream = AudioEffectStreamT<effect_t>;.

Author

Phil Schatzmann

Copyright

GPLv3

Constructor & Destructor Documentation

AudioEffectStream() [1/3]

AudioEffectStream ( )

default

AudioEffectStream() [2/3]

AudioEffectStream ( Stream &  io )

inline

AudioEffectStream() [3/3]

AudioEffectStream ( Print &  out )

inline

Member Function Documentation

addEffect() [1/4]

void addEffect ( AudioEffect &  effect )

inline

Adds an effect object (by reference)

addEffect() [2/4]

void addEffect ( AudioEffect *  effect )

inline

Adds an effect using a pointer.

addEffect() [3/4]

void addEffect ( int  channel, AudioEffect &  effect  )

inline

Adds an effect object (by reference) directly to a single channel's own chain.

addEffect() [4/4]

void addEffect ( int  channel, AudioEffect *  effect  )

inline

Adds an effect using a pointer directly to a single channel's own chain.

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 JupyterAudioT< T >, MozziStream, TimerCallbackAudioStream, EncodedAudioStream, PureDataStream, AdapterAudioOutputToAudioStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, and InputMerge< T >.

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 MP3EncoderShine, PureDataStream, PWMAudioOutput< PWMDriverT >, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, FormatConverterStream, Pipeline, ResampleStream, ResampleStreamT< TInterpolator >, and SupportedRatesStream.

available()

int available ( )

inlineoverridevirtual

Reimplemented from BaseStream.

availableForWrite()

int availableForWrite ( )

inlineoverridevirtual

Reimplemented from BaseStream.

begin() [1/2]

bool begin ( )

inlinevirtual

Reimplemented from BaseStream.

begin() [2/2]

bool begin ( AudioInfo  cfg )

inline

channelCount()

int channelCount ( )

inline

Provides the number of channels that have their own effect chain (valid after begin())

channelEffects()

AudioEffectCommon & channelEffects ( int  channel )

inline

Provides access to a single channel's own effect chain (valid after begin())

clear()

void clear ( )

inline

deletes all defined effects

clearNotifyAudioChange()

virtual void clearNotifyAudioChange ( )

inlinevirtualinherited

Deletes all change notify subscriptions.

Reimplemented in RTSPClient< TcpClient, UdpSocket >.

defaultConfig()

AudioInfo defaultConfig ( )

inline

end()

void end ( )

inlineoverridevirtual

Reimplemented from BaseStream.

findEffect()

AudioEffect * findEffect ( int  id )

inline

Finds an effect by id.

flush()

void flush ( )

inlineoverridevirtual

Reimplemented from BaseStream.

isNotifyActive()

bool isNotifyActive ( )

inlineinherited

Checks if the automatic AudioInfo update is active.

not_supported()

virtual int not_supported ( int  out, const char *  msg = ""  )

inlineprotectedvirtualinherited

notifyAudioChange()

void notifyAudioChange ( AudioInfo  info )

inlineprotectedinherited

operator bool()

virtual operator bool ( )

inlinevirtualinherited

Reimplemented in A2DPStream, ICYStreamT< T >, PortAudioStream, BLESerialStream, URLStream, USBAudioStreamBase, I2SStream, AdapterAudioOutputToAudioStream, TimedStream, MemoryStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, Pipeline, and AudioFFTBase.

operator[]()

AudioEffect * operator[] ( int  idx )

inline

gets an effect by index

readBytes()

size_t readBytes ( uint8_t *  data, size_t  len  )

inlineoverridevirtual

Provides the audio data by reading the assinged Stream and applying the effects on that input

Reimplemented from AudioStream.

readSilence()

virtual size_t readSilence ( uint8_t *  buffer, size_t  length  )

inlinevirtualinherited

Source to generate silence: just sets the buffer to 0.

refillReadBuffer()

void refillReadBuffer ( )

inlineprotectedinherited

Refill small read buffer (e.g. 8 bytes) to avoid single byte reads when calling read()

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 VS1053Stream, WM8960Stream, AutomaticGainControlStream, VolumeStream, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, MiniAudioStream, PortAudioStream, I2SCodecStream, MozziStream, SPDIFOutput, AudioLoRa, AnalogAudioStream, I2SStream, TimerCallbackAudioStream, MDFEchoCancellationStream< T, SampleType >, AudioKitStream, NRF24Stream, SPIAudioSlave, USBAudioDeviceBase, USBAudioHostBase, VBANStream, GoertzelStream, MeasuringStream, QualityAnalysisStream, Equalizer3BandsT< T >, Equalizer3BandsPerChannelT< T >, AdapterAudioOutputToAudioStream, TimedStream, ProgressStream, CallbackStream, VolumeMeter, AudioInputMonitor, FormatConverterStream, FadeStream, Pipeline::ModifyingStreamAdapter, AudioFFTBase, EncodedAudioStream, PureDataStream, BLESerialStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, Pipeline, ResampleStream, ResampleStreamT< TInterpolator >, and SupportedRatesStream.

setInput()

void setInput ( Stream &  io )

inline

setNotifyActive()

void setNotifyActive ( bool  flag )

inlineinherited

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

setOutput() [1/3]

virtual void setOutput ( AudioOutput &  out )

inlinevirtualinherited

Defines/Changes the output target and registers for audio change notifications.

Reimplemented in TimedStream, VolumeMeter, AudioInputMonitor, ReformatBaseStream, FormatConverterStream, and EncodedAudioStream.

setOutput() [2/3]

void setOutput ( Print &  out )

inlinevirtual

Defines/Changes the output target.

Implements ModifyingStream.

setOutput() [3/3]

void setOutput ( Stream &  io )

inline

setStream() [1/2]

virtual void setStream ( AudioStream &  io )

inlinevirtualinherited

Defines/Changes the input & output and registers for audio change notifications.

Reimplemented in VolumeMeter, AudioInputMonitor, FormatConverterStream, ReformatBaseStream, TimedStream, and EncodedAudioStream.

setStream() [2/2]

void setStream ( Stream &  in )

inlinevirtual

Defines/Changes the input & output.

Implements ModifyingStream.

setWriteBufferSize()

void setWriteBufferSize ( int  size )

inlineinherited

size()

size_t size ( )

inline

Provides the actual number of defined effects.

write() [1/2]

size_t write ( const uint8_t *  data, size_t  len  )

inlineoverridevirtual

Writes the samples passed in the buffer and applies the effects before writing the result to the output defined in the constructor.

Reimplemented from AudioStream.

write() [2/2]

virtual size_t write ( uint8_t  ch )

inlineoverridevirtualinherited

Reimplemented in MemoryStream, AudioStreamWrapper, BufferedTaskStream, RingBufferStream, BufferedStream, and URLStream.

writeSilence()

virtual void writeSilence ( size_t  len )

inlinevirtualinherited

Writes len bytes of silence (=0).

Member Data Documentation

_timeout

int _timeout = 10

protectedinherited

info

AudioInfo info

protectedinherited

is_notify_active

bool is_notify_active = true

protectedinherited

notify_vector

Vector<AudioInfoSupport*> notify_vector

protectedinherited

p_io

Stream* p_io =nullptr

protected

p_out

Print* p_out =nullptr

protected

tmp_in

RingBuffer<uint8_t> tmp_in {0}

protectedinherited

tmp_out

RingBuffer<uint8_t> tmp_out {0}

protectedinherited

variant

std::variant<AudioEffectStreamT<int16_t>, AudioEffectStreamT<int24_t>,AudioEffectStreamT<int32_t> > variant

protected

write_buffer_size

int write_buffer_size = MAX_SINGLE_CHARS

protectedinherited

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

• src/AudioTools/CoreAudio/AudioEffects/AudioEffects.h