ReformatBaseStream Class Reference

Base class for chained converting streams. More...

#include <AudioIO.h>

Inheritance diagram for ReformatBaseStream:

Public Member Functions
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
virtual bool	begin ()
virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.
void	end () override
virtual void	flush () override
virtual float	getByteFactor ()=0
virtual Print *	getPrint ()
virtual Stream *	getStream ()
bool	isNotifyActive ()
	Checks if the automatic AudioInfo update is active.
virtual	operator bool ()
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.
void	resizeReadResultQueue (int size)
virtual void	setAudioInfo (AudioInfo newInfo) override
	Defines the input AudioInfo.
void	setNotifyActive (bool flag)
	Deactivate/Reactivate automatic AudioInfo updates: (default is active)
virtual void	setOutput (AudioOutput &print)
virtual void	setOutput (Print &print) override
	Defines/Changes the output target.
virtual void	setStream (AudioStream &stream)
virtual void	setStream (Stream &stream) override
	Defines/Changes the input & output.
void	setWriteBufferSize (int size)
virtual TransformationReader< ReformatBaseStream > &	transformationReader ()
	Provides access to the TransformationReader.
virtual 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()
void	setupReader ()

Protected Attributes
int	_timeout = 10
AudioInfo	info
bool	is_notify_active = true
Vector< AudioInfoSupport * >	notify_vector
Print *	p_print = nullptr
Stream *	p_stream = nullptr
TransformationReader< ReformatBaseStream >	reader
RingBuffer< uint8_t >	tmp_in {0}
RingBuffer< uint8_t >	tmp_out {0}
int	write_buffer_size = MAX_SINGLE_CHARS

Detailed Description

Base class for chained converting streams.

Author

Phil Schatzmann

Copyright

GPLv3

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

available()

int available ( )

inlineoverridevirtual

Reimplemented from BaseStream.

availableForWrite()

int availableForWrite ( )

inlineoverridevirtual

Reimplemented from BaseStream.

begin()

virtual bool begin ( )

inlinevirtualinherited

Reimplemented in AudioOutputWithCallback, AudioMP34DT05, I2SCodecStream, MozziStream, PureDataStream, SPDIFOutput, VS1053Stream, WM8960Stream, AdaptiveResamplingStream, AudioLoRa, ESPNowStream, VBANStream, AudioEffectStreamT< T >, Equalizer3Bands, Equalizer3BandsPerChannel, I2SStream, AudioStreamWrapper, TimerCallbackAudioStream, FrequencyDetectorAutoCorrelation, GoertzelStream, ResampleStreamT< TInterpolator >, FileLoopT< FileType >, FileLoopT< File >, LoRaStream, EncodedAudioStream, AudioBoardStream, AudioFFTBase, AudioKitStream, MiniAudioStream, PortAudioStream, StdioStream, HLSStreamT< URLStream >, AnalogAudioArduino, AnalogAudioStream, AdapterAudioOutputToAudioStream, TimedStream, MemoryStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, MeasuringStream, ProgressStream, Throttle, InputMerge< T >, CallbackStream, FilteredStream< T, TF >, FilteredStream< int16_t, int16_t >, VolumeMeter, AudioInputMonitor, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, FormatConverterStream, CatStream, QueueStream< T >, QueueStream< uint8_t >, DynamicMemoryStream, Pipeline, Pipeline::ModifyingStreamAdapter, ResampleStream, VolumeStream, and EqualizerNBands< SampleT, AccT, NUM_TAPS, NUM_BANDS >.

clearNotifyAudioChange()

virtual void clearNotifyAudioChange ( )

inlinevirtualinherited

Deletes all change notify subscriptions.

Reimplemented in RTSPClient< TcpClient, UdpSocket >.

end()

void end ( )

inlineoverridevirtual

Reimplemented from BaseStream.

flush()

virtual void flush ( )

inlineoverridevirtualinherited

Reimplemented from Print.

Reimplemented in PureDataStream, URLStreamBufferedT< T >, URLStreamBufferedT< ICYStream >, AudioStreamWrapper, ResampleStream, URLStream, BufferedTaskStream, I2SStream, MemoryStream, RingBufferStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, and BufferedStream.

getByteFactor()

virtual float getByteFactor ( )

pure virtual

Implemented in EncodedAudioStream, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, FormatConverterStream, ResampleStream, and ResampleStreamT< TInterpolator >.

getPrint()

virtual Print * getPrint ( )

inlinevirtual

getStream()

virtual Stream * getStream ( )

inlinevirtual

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 >, AudioBLEStream, AudioFFTBase, PortAudioStream, URLStream, I2SStream, AdapterAudioOutputToAudioStream, TimedStream, MemoryStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, and Pipeline.

readBytes()

size_t readBytes ( uint8_t *  data, size_t  len  )

inlineoverridevirtual

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 >.

resizeReadResultQueue()

void resizeReadResultQueue ( int  size )

inline

Define the size of the interal read result queue: same as transformationReader().resizeResultQueue(size)

setAudioInfo()

virtual void setAudioInfo ( AudioInfo  info )

inlineoverridevirtualinherited

Defines the input AudioInfo.

Implements AudioInfoSupport.

Reimplemented in VS1053Stream, WM8960Stream, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, VolumeStream, MiniAudioStream, PortAudioStream, I2SCodecStream, MozziStream, SPDIFOutput, AudioLoRa, AnalogAudioStream, I2SStream, TimerCallbackAudioStream, AudioBLEStream, LoRaStream, AudioFFTBase, AudioKitStream, VBANStream, AnalogAudioArduino, Equalizer3Bands, Equalizer3BandsPerChannel, AdapterAudioOutputToAudioStream, TimedStream, MeasuringStream, ProgressStream, CallbackStream, VolumeMeter, AudioInputMonitor, FormatConverterStream, FadeStream, GoertzelStream, Pipeline::ModifyingStreamAdapter, MDFEchoCancellationStream< Allocator >, EncodedAudioStream, PureDataStream, GeneratedSoundStream< T >, GeneratedSoundStream< int16_t >, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, Pipeline, ResampleStream, and ResampleStreamT< TInterpolator >.

setNotifyActive()

void setNotifyActive ( bool  flag )

inlineinherited

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

setOutput() [1/2]

virtual void setOutput ( AudioOutput &  print )

inlinevirtual

Reimplemented in FormatConverterStream, and EncodedAudioStream.

setOutput() [2/2]

virtual void setOutput ( Print &  out )

inlineoverridevirtual

Defines/Changes the output target.

Implements ModifyingStream.

Reimplemented in EncodedAudioStream, and FormatConverterStream.

setStream() [1/2]

virtual void setStream ( AudioStream &  stream )

inlinevirtual

Reimplemented in FormatConverterStream, and EncodedAudioStream.

setStream() [2/2]

virtual void setStream ( Stream &  in )

inlineoverridevirtual

Defines/Changes the input & output.

Implements ModifyingStream.

Reimplemented in FormatConverterStream, and EncodedAudioStream.

setupReader()

void setupReader ( )

inlineprotected

setWriteBufferSize()

void setWriteBufferSize ( int  size )

inlineinherited

transformationReader()

virtual TransformationReader< ReformatBaseStream > & transformationReader ( )

inlinevirtual

Provides access to the TransformationReader.

write() [1/2]

virtual size_t write ( const uint8_t *  data, size_t  len  )

inlineoverridevirtualinherited

Implements BaseStream.

Reimplemented in URLStream, LMSEchoCancellationStream< T >, MDFEchoCancellationStream< Allocator >, AudioBLEServer, ESP3288AudioOutput, I2SCodecStream, MozziStream, PureDataStream, SPDIFOutput, AudioLoRa, I2SStream, AudioStreamWrapper, ConverterStream< T >, LoRaStream, EncodedAudioStream, FaustStream< DSP >, AudioFFTBase, AudioKitStream, MiniAudioStream, PortAudioStream, TfLiteAudioStream, VS1053Stream, A2DPStream, AdaptiveResamplingStream, BufferedTaskStream, URLStreamESP32, VBANStream, AnalogAudioArduino, AnalogAudioStream, AudioEffectStreamT< T >, Equalizer3Bands, Equalizer3BandsPerChannel, AdapterAudioOutputToAudioStream, TimedStream, MemoryStream, RingBufferStream, BufferedStream, MeasuringStream, ProgressStream, Throttle, CallbackStream, FilteredStream< T, TF >, FilteredStream< int16_t, int16_t >, VolumeMeter, AudioInputMonitor, ChannelFormatConverterStreamT< T >, ChannelFormatConverterStream, NumberFormatConverterStreamT< TFrom, TTo >, NumberFormatConverterStream, FormatConverterStream, FadeStream, FrequencyDetectorAutoCorrelation, FrequencyDetectorZeroCrossing, GoertzelStream, Pipeline, Pipeline::ModifyingStreamAdapter, ResampleStream, ResampleStreamT< TInterpolator >, VolumeStream, AudioBLEClient, AudioBLEClient, AudioBLEServer, EqualizerNBands< SampleT, AccT, NUM_TAPS, NUM_BANDS >, TfLiteAudioStreamBase, WM8960Stream, AnalogDriverESP32V1::IO16Bit, and AnalogDriverESP32V2::IO16Bit.

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_print

Print* p_print = nullptr

protected

p_stream

Stream* p_stream = nullptr

protected

reader

TransformationReader<ReformatBaseStream> reader

protected

tmp_in

RingBuffer<uint8_t> tmp_in {0}

protectedinherited

tmp_out

RingBuffer<uint8_t> tmp_out {0}

protectedinherited

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/AudioIO.h