EncodedAudioOutput Class Reference

A more natural Print class to process encoded data (aac, wav, mp3...). Just define the output and the decoder and write the encoded data. More...

#include <AudioEncoded.h>

Inheritance diagram for EncodedAudioOutput:

Public Member Functions
	EncodedAudioOutput (AudioDecoder *decoder)
	EncodedAudioOutput (AudioEncoder *encoder)
	EncodedAudioOutput (AudioOutput *outputStream, AudioDecoder *decoder)
	EncodedAudioOutput (AudioOutput *outputStream, AudioEncoder *encoder)
	EncodedAudioOutput (AudioStream *outputStream, AudioDecoder *decoder)
	EncodedAudioOutput (AudioStream *outputStream, AudioEncoder *encoder)
	EncodedAudioOutput (Print *outputStream, AudioDecoder *decoder)
	EncodedAudioOutput (Print *outputStream, AudioEncoder *encoder)
void	addNotifyAudioChange (AudioInfoSupport &bi) override
	Define object which need to be notified if the basinfo is changing.
AudioInfo	audioInfo () override
	Provide audio info from decoder if relevant.
virtual AudioInfo	audioInfoOut ()
int	availableForWrite () override
bool	begin () override
	Starts the processing - sets the status to active.
virtual bool	begin (AudioInfo newInfo) override
	Starts the processing - sets the status to active.
virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.
AudioDecoder &	decoder ()
	Provides the initialized decoder.
AudioInfo	defaultConfig ()
AudioEncoder &	encoder ()
	Provides the initialized encoder.
void	end () override
	Ends the processing.
virtual void	flush ()
AudioDecoder *	getDecoder ()
AudioEncoder *	getEncoder ()
bool	isCheckAvailableForWrite ()
	Is Available for Write check activated ?
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.
	operator bool () override
	Returns true if status is active and we still have data to be processed.
EncodedAudioOutput &	operator= (EncodedAudioOutput const &src)
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	setDecoder (AudioDecoder *decoder)
void	setEncoder (AudioEncoder *encoder)
void	setFrameSize (int size)
	defines the size of the decoded frame in bytes
void	setNotifyActive (bool flag)
	Deactivate/Reactivate automatic AudioInfo updates: (default is active)
void	setOutput (AudioOutput &outputStream)
void	setOutput (AudioOutput *out)
void	setOutput (AudioStream &outputStream)
void	setOutput (AudioStream *out)
void	setOutput (Print &outputStream) override
	Defines/Changes the output target.
void	setOutput (Print *outputStream)
	Defines the output.
virtual size_t	write (const uint8_t *data, size_t len) override
	encoder decode the data
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
bool	active = false
AudioInfo	cfg
bool	check_available_for_write = false
AudioDecoder *	decoder_ptr = undefined
AudioEncoder *	encoder_ptr = undefined
int	frame_size = DEFAULT_BUFFER_SIZE
bool	is_active = false
bool	is_notify_active = true
Vector< AudioInfoSupport * >	notify_vector
Print *	ptr_out = nullptr
SingleBuffer< uint8_t >	tmp {MAX_SINGLE_CHARS}
int	tmpPos = 0
AudioInfoSupport *	to_notify = nullptr
CodecNOP *	undefined = CodecNOP::instance()
AudioWriter *	writer_ptr = nullptr

Detailed Description

A more natural Print class to process encoded data (aac, wav, mp3...). Just define the output and the decoder and write the encoded data.

Author

Phil Schatzmann

Copyright

GPLv3

Member Function Documentation

addNotifyAudioChange()

void addNotifyAudioChange ( AudioInfoSupport &  bi )

inlineoverridevirtual

Define object which need to be notified if the basinfo is changing.

Reimplemented from AudioInfoSource.

audioInfo()

AudioInfo audioInfo ( )

inlineoverridevirtual

Provide audio info from decoder if relevant.

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, ResampleStream, and ResampleStreamT< TInterpolator >.

availableForWrite()

int availableForWrite ( )

inlineoverridevirtual

Reimplemented from AudioOutput.

begin() [1/2]

bool begin ( )

inlineoverridevirtual

Starts the processing - sets the status to active.

Reimplemented from AudioOutput.

begin() [2/2]

virtual bool begin ( AudioInfo  newInfo )

inlineoverridevirtual

Starts the processing - sets the status to active.

Reimplemented from AudioOutput.

clearNotifyAudioChange()

virtual void clearNotifyAudioChange ( )

inlinevirtualinherited

Deletes all change notify subscriptions.

Reimplemented in RTSPClient< TcpClient, UdpSocket >.

end()

void end ( )

inlineoverridevirtual

Ends the processing.

Reimplemented from AudioOutput.

flush()

virtual void flush ( )

inlinevirtualinherited

Reimplemented from Print.

isDeletable()

virtual bool isDeletable ( )

inlinevirtualinherited

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

Reimplemented in AdapterPrintToAudioOutput, and AdapterAudioStreamToAudioOutput.

operator bool()

operator bool ( )

inlineoverridevirtual

Returns true if status is active and we still have data to be processed.

Reimplemented from AudioOutput.

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 )

inlineoverridevirtual

Defines the input AudioInfo.

Reimplemented from AudioOutput.

setOutput()

void setOutput ( Print &  out )

inlineoverridevirtual

Defines/Changes the output target.

Implements ModifyingOutput.

write()

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

inlineoverridevirtual

encoder decode the data

Implements AudioOutput.

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/AudioCodecs/AudioEncoded.h