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

Inheritance diagram for FormatConverterStream:

Public Member Functions
	FormatConverterStream (AudioOutput &print)

	FormatConverterStream (AudioStream &stream)

	FormatConverterStream (Print &print)

	FormatConverterStream (Stream &stream)

virtual AudioInfo	audioInfo () override

int	available () override

int	availableForWrite () override

virtual bool	begin ()

bool	begin (AudioInfo from, AudioInfo to)

bool	begin (AudioInfo to)

virtual void	end ()

virtual void	flush () override

virtual Print *	getPrint ()

virtual Stream *	getStream ()

	operator bool ()

size_t	readBytes (uint8_t *data, size_t size) override

virtual size_t	readSilence (uint8_t *buffer, size_t length)
	Source to generate silence: just sets the buffer to 0.

virtual void	setAudioInfo (AudioInfo info) override

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

virtual void	setNotifyAudioChange (AudioInfoSupport &bi) override

void	setSourceAudioInfo (AudioInfo from)

void	setStream (Print &print) override

void	setStream (Stream &io) override

void	setupReader ()

virtual bool	validate (AudioInfo &info)

virtual size_t	write (const uint8_t *data, size_t size) override

virtual size_t	write (uint8_t ch) override

virtual void	writeSilence (size_t len)
	Writes len bytes of silence (=0).

Protected Member Functions
float	byteFactor ()

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

void	refillReadBuffer ()

Protected Attributes
ChannelFormatConverterStream	channelFormatConverter

float	factor

AudioInfo	from_cfg

AudioInfo	info

bool	is_buffered = true

NumberFormatConverterStream	numberFormatConverter

AudioInfoSupport *	p_notify =nullptr

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

Detailed Description

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

Member Function Documentation

float byteFactor ( )

inlineprotected

e.g if we do channels 2->1 we nead to double the input data

void setSourceAudioInfo ( AudioInfo from )

inline

Defines the audio info of the stream which has been defined in the constructor

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