Converter which converts between bits_per_sample and 16 bits. The templated NumberFormatConverterStreamT class is used based on the information provided by the bits_per_sample in the configuration. More...

#include <AudioStreamsConverter.h>

Inheritance diagram for NumberFormatConverterStream:

Public Member Functions
	NumberFormatConverterStream (AudioOutput &print)

	NumberFormatConverterStream (AudioStream &stream)

	NumberFormatConverterStream (Print &print)

	NumberFormatConverterStream (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

virtual int	available () override

virtual int	availableForWrite () override

bool	begin () override

bool	begin (AudioInfo info, AudioInfo to, float gain=1.0f)

bool	begin (AudioInfo info, int toBits, float gain=1.0f)

bool	begin (int from_bit_per_samples, int to_bit_per_samples, float gain=1.0)

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 ()

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 newInfo) override
	Defines the input AudioInfo.

void	setBuffered (bool flag)

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	setToBits (uint8_t bits)

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
void	cleanupConverter ()

template<typename TFrom , typename TTo >
NumberFormatConverterStreamT< TFrom, TTo > *	getConverter ()

virtual int	not_supported (int out, const char *msg="")

void	notifyAudioChange (AudioInfo info)

void	refillReadBuffer ()

void	setupReader ()

void	setupStream ()

Protected Attributes
int	_timeout = 10

int	from_bit_per_samples = 16

float	gain = 1.0

AudioInfo	info

bool	is_notify_active = true

Vector< AudioInfoSupport * >	notify_vector

void *	p_converter = nullptr

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_bit_per_samples = 0

Detailed Description

Converter which converts between bits_per_sample and 16 bits. The templated NumberFormatConverterStreamT class is used based on the information provided by the bits_per_sample in the configuration.

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 >, 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()

virtual int available ( )

inlineoverridevirtual

Reimplemented from BaseStream.

◆ availableForWrite()

virtual int availableForWrite ( )

inlineoverridevirtual

Reimplemented from BaseStream.

◆ begin() [1/2]

bool begin ( )

inlineoverridevirtual

Reimplemented from BaseStream.

◆ begin() [2/2]

bool begin	(	int	from_bit_per_samples,
		int	to_bit_per_samples,
		float	gain = `1.0`
	)

inline

cleanup if we call begin() multiple times w/o end

◆ end()

void end ( )

inlineoverridevirtual

Reimplemented from BaseStream.

◆ flush()

virtual void flush ( )

inlineoverridevirtualinherited

Reimplemented from Print.

Reimplemented in ResampleStream, BufferedTaskStream, and BufferedStream.

◆ getByteFactor()

float getByteFactor ( )

inlinevirtual

Implements ReformatBaseStream.

◆ operator bool()

virtual operator bool ( )

inlinevirtualinherited

Reimplemented in A2DPStream, Pipeline, I2SStream, and MemoryStream.

◆ readBytes()

size_t readBytes	(	uint8_t *	data,
		size_t	len
	)

inlineoverridevirtual

Reimplemented from AudioStream.

◆ setAudioInfo()

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]

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() [1/2]

◆ begin() [2/2]

◆ end()

◆ flush()

◆ getByteFactor()

◆ operator bool()

◆ readBytes()

◆ setAudioInfo()

◆ setOutput()

◆ setStream()

◆ write() [1/2]

◆ write() [2/2]