ChannelFormatConverterStreamT< T > Class Template Reference

Converter for reducing or increasing the number of Channels. More...

#include <AudioStreamsConverter.h>

Inheritance diagram for ChannelFormatConverterStreamT< T >:

Public Member Functions
	ChannelFormatConverterStreamT (ChannelFormatConverterStreamT const &)=delete
	ChannelFormatConverterStreamT (Print &print)
	ChannelFormatConverterStreamT (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
	Returns the AudioInfo with the to_channels.
virtual int	available () override
virtual int	availableForWrite () override
bool	begin ()
bool	begin (int fromChannels, int toChannels)
virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.
void	end () override
virtual void	flush () override
float	getByteFactor ()
virtual Print *	getPrint ()
virtual Stream *	getStream ()
bool	isNotifyActive ()
	Checks if the automatic AudioInfo update is active.
virtual	operator bool ()
ChannelFormatConverterStreamT &	operator= (ChannelFormatConverterStreamT const &)=delete
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	setAudioInfo (AudioInfo cfg) 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	setToChannels (uint16_t channels)
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
size_t	convert (const uint8_t *in_data, size_t size)
virtual int	not_supported (int out, const char *msg="")
void	notifyAudioChange (AudioInfo info)
void	refillReadBuffer ()
void	setupReader ()

Protected Attributes
int	_timeout = 10
Vector< T >	buffer {0}
Vector< uint8_t >	bufferTmp {0}
ChannelConverter< T >	converter
float	factor = 1
int	from_channels = 2
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	to_channels = 2

Detailed Description

template<typename T>
class audio_tools::ChannelFormatConverterStreamT< T >

Converter for reducing or increasing the number of Channels.

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

audioInfo()

virtual AudioInfo audioInfo ( )

inlineoverridevirtualinherited

provides the actual input AudioInfo

Implements AudioInfoSupport.

Reimplemented in JupyterAudioT< T >, MozziStream, TimerCallbackAudioStream, PureDataStream, AdapterAudioOutputToAudioStream, GeneratedSoundStream< T >, and GeneratedSoundStream< int16_t >.

audioInfoOut()

template<typename T >

AudioInfo audioInfoOut ( )

inlineoverridevirtual

Returns the AudioInfo with the to_channels.

Reimplemented from AudioInfoSupport.

available()

template<typename T >

virtual int available ( )

inlineoverridevirtual

Reimplemented from BaseStream.

availableForWrite()

template<typename T >

virtual int availableForWrite ( )

inlineoverridevirtual

Reimplemented from BaseStream.

begin()

template<typename T >

bool begin ( )

inlinevirtual

Reimplemented from BaseStream.

end()

void end ( )

inlineoverridevirtualinherited

Reimplemented from BaseStream.

flush()

virtual void flush ( )

inlineoverridevirtualinherited

Reimplemented from Print.

Reimplemented in ResampleStream, BufferedTaskStream, and BufferedStream.

getByteFactor()

template<typename T >

float getByteFactor ( )

inlinevirtual

Implements ReformatBaseStream.

operator bool()

virtual operator bool ( )

inlinevirtualinherited

Reimplemented in A2DPStream, Pipeline, I2SStream, and MemoryStream.

readBytes()

template<typename T >

size_t readBytes ( uint8_t *  data, size_t  len  )

inlineoverridevirtual

Reimplemented from AudioStream.

setAudioInfo()

template<typename T >

void setAudioInfo ( AudioInfo  info )

inlineoverridevirtual

Defines the input AudioInfo.

Reimplemented from AudioStream.

setOutput()

virtual void setOutput ( Print &  out )

inlineoverridevirtualinherited

Defines/Changes the output target.

Implements ModifyingStream.

Reimplemented in EncodedAudioStream, and FormatConverterStream.

setStream()

virtual void setStream ( Stream &  in )

inlineoverridevirtualinherited

Defines/Changes the input & output.

Implements ModifyingStream.

Reimplemented in FormatConverterStream, and EncodedAudioStream.

write() [1/2]

template<typename T >

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.

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

• src/AudioTools/CoreAudio/AudioStreamsConverter.h