AdapterPrintToAudioOutput Class Reference

Wrapper which converts a Print to a AudioOutput. More...

#include <AudioIO.h>

Inheritance diagram for AdapterPrintToAudioOutput:

Public Member Functions
	AdapterPrintToAudioOutput (Print &print)
virtual void	addNotifyAudioChange (AudioInfoSupport &bi)
	Adds target to be notified about audio changes.
AudioInfo	audioInfo ()
	provides the actual input AudioInfo
virtual AudioInfo	audioInfoOut ()
	provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream
virtual int	availableForWrite () override
virtual bool	begin ()
virtual bool	begin (AudioInfo info)
virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.
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.
void	setAudioInfo (AudioInfo info)
	Defines the input AudioInfo.
void	setNotifyActive (bool flag)
	Deactivate/Reactivate automatic AudioInfo updates: (default is active)
void	setStream (Print &out)
size_t	write (const uint8_t *data, size_t len)
virtual size_t	write (uint8_t ch) override
virtual void	writeSilence (size_t len)

Protected Member Functions
void	notifyAudioChange (AudioInfo info)

Protected Attributes
int	_timeout = 10
AudioInfo	cfg
bool	is_active = false
bool	is_notify_active = true
Vector< AudioInfoSupport * >	notify_vector
Print *	p_print = nullptr
SingleBuffer< uint8_t >	tmp {MAX_SINGLE_CHARS}
int	tmpPos = 0

Detailed Description

Wrapper which converts a Print to a AudioOutput.

Member Function Documentation

addNotifyAudioChange()

virtual void addNotifyAudioChange ( AudioInfoSupport &  bi )

inlinevirtualinherited

Adds target to be notified about audio changes.

Reimplemented in CodecNOP, MP3DecoderMAD, EncodedAudioOutput, EncodedAudioStream, AACDecoderFDK, DecoderBasic, MP3DecoderHelix, OggContainerDecoder, Pipeline, and Pipeline::ModifyingStreamAdapter.

audioInfo()

AudioInfo audioInfo ( )

inlinevirtual

provides the actual input AudioInfo

Reimplemented from AudioOutput.

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, and ResampleStream.

availableForWrite()

virtual int availableForWrite ( )

inlineoverridevirtualinherited

Reimplemented from Print.

Reimplemented in RTSPOutput.

begin() [1/2]

virtual bool begin ( )

inlinevirtualinherited

Reimplemented in AudioOutputWithCallback, EncodedAudioOutput, OggContainerOutput, MetaDataFilter, and CsvOutput< T >.

begin() [2/2]

virtual bool begin ( AudioInfo  info )

inlinevirtualinherited

Reimplemented in AudioESP32ULP, CsvOutput< T >, and EncodedAudioOutput.

end()

virtual void end ( )

inlinevirtualinherited

Reimplemented in OversamplingDAC, EncodedAudioOutput, and OggContainerOutput.

flush()

virtual void flush ( )

inlinevirtualinherited

Reimplemented from Print.

isDeletable()

virtual bool isDeletable ( )

inlinevirtual

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

Reimplemented from AudioOutput.

operator bool()

virtual operator bool ( )

inlinevirtualinherited

Reimplemented in EncodedAudioOutput, and RTSPOutput.

setAudioInfo()

void setAudioInfo ( AudioInfo  info )

inlinevirtual

Defines the input AudioInfo.

Reimplemented from AudioOutput.

write() [1/2]

size_t write ( const uint8_t *  data, size_t  len  )

inlinevirtual

Implements AudioOutput.

write() [2/2]

virtual size_t write ( uint8_t  ch )

inlineoverridevirtualinherited

Reimplemented in OversamplingDAC.

writeSilence()

virtual void writeSilence ( size_t  len )

inlinevirtualinherited

Writes n 0 values (= silence)

Parameters

len

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

• src/AudioTools/CoreAudio/AudioIO.h