Converter which converts bits_per_sample, channels and the sample_rate. The conversion is supported both on the input and output side. More...

#include <AudioStreamsConverter.h>

Inheritance diagram for FormatConverterStream:

Public Member Functions
	FormatConverterStream (AudioOutput &print)

	FormatConverterStream (AudioStream &stream)

	FormatConverterStream (Print &print)

	FormatConverterStream (Stream &stream)

virtual void	addNotifyAudioChange (AudioInfoSupport &bi)
	Adds target to be notified about audio changes.

virtual AudioInfo	audioInfo () override
	provides the actual input AudioInfo

AudioInfo	audioInfoOut () override

int	available () override

int	availableForWrite () override

bool	begin () override
	(Re-)Starts the processing: call setAudioInfo and setAudioInfoOut before

bool	begin (AudioInfo from)
	Starts the processing: call setAudioInfoOut before to define the target.

bool	begin (AudioInfo from, AudioInfo to)

virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.

void	end () override

virtual void	flush () override

float	getByteFactor () override

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

void	setAudioInfo (AudioInfo info) override
	Set the input audio information.

void	setAudioInfoOut (AudioInfo to)

void	setBuffered (bool active)
	Buffering is active by default to minimize the number of output calls.

void	setNotifyActive (bool flag)
	Deactivate/Reactivate automatic AudioInfo updates: (default is active)

void	setOutput (AudioOutput &print) override

void	setOutput (Print &print) override
	Defines/Changes the output target.

void	setStream (AudioStream &io) override

void	setStream (Stream &io) 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 ()

void	setupReader ()

Protected Attributes
int	_timeout = 10

ChannelFormatConverterStream	channelFormatConverter

AudioInfo &	from_cfg = info

AudioInfo	info

bool	is_buffered = true

bool	is_notify_active = true

Vector< AudioInfoSupport * >	notify_vector

NumberFormatConverterStream	numberFormatConverter

Print *	p_print = nullptr

Stream *	p_stream = nullptr

TransformationReader< ReformatBaseStream >	reader

ResampleStream	sampleRateConverter

RingBuffer< uint8_t >	tmp_in {0}

RingBuffer< uint8_t >	tmp_out {0}

AudioInfo	to_cfg

int	write_buffer_size = MAX_SINGLE_CHARS

Detailed Description

Converter which converts bits_per_sample, channels and the sample_rate. The conversion is supported both on the input and output side.

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()

AudioInfo audioInfoOut ( )

inlineoverridevirtual

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

Reimplemented from AudioInfoSupport.

◆ available()

int available ( )

inlineoverridevirtualinherited

Reimplemented from BaseStream.

◆ availableForWrite()

int availableForWrite ( )

inlineoverridevirtualinherited

Reimplemented from BaseStream.

◆ begin()

bool begin ( )

inlineoverridevirtual

(Re-)Starts the processing: call setAudioInfo and setAudioInfoOut before

Reimplemented from BaseStream.

◆ clearNotifyAudioChange()

virtual void clearNotifyAudioChange ( )

inlinevirtualinherited

Deletes all change notify subscriptions.

Reimplemented in RTSPClient< TcpClient, UdpSocket >.

◆ end()

void end ( )

inlineoverridevirtualinherited

Reimplemented from BaseStream.

◆ flush()

virtual void flush ( )

inlineoverridevirtualinherited

Reimplemented from Print.

Reimplemented in ResampleStream, BufferedTaskStream, and BufferedStream.

◆ getByteFactor()

float getByteFactor ( )

inlineoverridevirtual

Implements ReformatBaseStream.

◆ operator bool()

virtual operator bool ( )

inlinevirtualinherited

Reimplemented in A2DPStream, ICYStreamT< T >, I2SStream, MemoryStream, and Pipeline.

◆ readBytes()

size_t readBytes	(	uint8_t *	data,
		size_t	len
	)

inlineoverridevirtualinherited

Reimplemented from AudioStream.

◆ 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()

void setAudioInfo ( AudioInfo info )

inlineoverridevirtual

Set the input audio information.

Reimplemented from AudioStream.

◆ setOutput() [1/2]

void setOutput ( AudioOutput & print )

inlineoverridevirtual

Reimplemented from ReformatBaseStream.

◆ setOutput() [2/2]

void setOutput ( Print & out )

inlineoverridevirtual

Defines/Changes the output target.

Reimplemented from ReformatBaseStream.

◆ setStream() [1/2]

void setStream ( AudioStream & io )

inlineoverridevirtual

Reimplemented from ReformatBaseStream.

◆ setStream() [2/2]

void setStream ( Stream & in )

inlineoverridevirtual

Defines/Changes the input & output.

Reimplemented from ReformatBaseStream.

◆ write() [1/2]

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

inlineoverridevirtual

Reimplemented from AudioStream.

◆ write() [2/2]

virtual size_t write ( uint8_t ch )

inlineoverridevirtualinherited

Reimplemented in BufferedTaskStream, and BufferedStream.

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

src/AudioTools/CoreAudio/AudioStreamsConverter.h

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Function Documentation

◆ addNotifyAudioChange()

◆ audioInfo()

◆ audioInfoOut()

◆ available()

◆ availableForWrite()

◆ begin()

◆ clearNotifyAudioChange()

◆ end()

◆ flush()

◆ getByteFactor()

◆ operator bool()

◆ readBytes()

◆ removeNotifyAudioChange()

◆ setAudioInfo()

◆ setOutput() [1/2]

◆ setOutput() [2/2]

◆ setStream() [1/2]

◆ setStream() [2/2]

◆ write() [1/2]

◆ write() [2/2]