AudioOutputWithCallback Class Reference

ESP8266Audio AudioOutput class which stores the data in a temporary buffer. The buffer can be consumed e.g. by a callback function by calling read(); Dependencies: ESP8266Audio Library Dependencies: ESP32-A2DP Library. More...

#include <AudioESP8266.h>

Inheritance diagram for AudioOutputWithCallback:

Public Member Functions
	AudioOutputWithCallback (int bufferSize, int bufferCount)
virtual void	addNotifyAudioChange (AudioInfoSupport &bi)
	Adds target to be notified about audio changes.
virtual AudioInfo	audioInfo () override
	provides the actual input AudioInfo
virtual AudioInfo	audioInfo () override
	provides the actual input AudioInfo
virtual AudioInfo	audioInfoOut ()
	provides the actual output AudioInfo: this is usually the same as audioInfo() unless we use a transforming stream
int	available () override
	Returns the available bytes in the buffer: to be avoided.
virtual int	availableForWrite () override
virtual int	availableForWrite () override
virtual bool	begin ()
	Activates the output.
virtual bool	begin (AudioInfo info)
void	clear ()
	Clears all the data in the buffer.
virtual void	clearNotifyAudioChange ()
	Deletes all change notify subscriptions.
virtual bool	ConsumeSample (int16_t sample[2])
	puts the sample into a buffer
virtual void	end ()
virtual void	end ()
virtual void	flush ()
void	flush () override
	empties the buffer
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.
bool	isNotifyActive ()
	Checks if the automatic AudioInfo update is active.
virtual	operator bool ()
virtual	operator bool ()
int	peek () override
	peeks a byte - to be avoided
int	read () override
	reads a byte - to be avoided
size_t	read (Frame *src, size_t len)
	Provides the data from the internal buffer to the callback.
size_t	readBytes (uint8_t *data, size_t len) override
	Use this method !!
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.
virtual void	setAudioInfo (AudioInfo newInfo) override
	Defines the input AudioInfo.
virtual void	setAudioInfo (AudioInfo newInfo) override
	Defines the input AudioInfo.
void	setNotifyActive (bool flag)
	Deactivate/Reactivate automatic AudioInfo updates: (default is active)
void	setNotifyActive (bool flag)
	Deactivate/Reactivate automatic AudioInfo updates: (default is active)
void	setOutput (Print &out)
	Defines/Changes the output target.
void	setStream (Print &out)
void	setStream (Stream &io)
	Defines/Changes the input & output.
virtual bool	stop ()
	stops the processing
size_t	write (const uint8_t *data, size_t len) override
	Use this method: write an array.
virtual size_t	write (const uint8_t *data, size_t len) override=0
size_t	write (uint8_t c) override
	writes a byte to the buffer
virtual size_t	write (uint8_t ch) override
virtual void	writeSilence (size_t len)
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	notifyAudioChange (AudioInfo info)
virtual size_t	readExt (uint8_t *data, size_t len)
void	refill ()
void	refillReadBuffer ()
virtual size_t	writeExt (const uint8_t *data, size_t len)

Protected Attributes
int	_timeout = 10
int	_timeout = 10
bool	active
SingleBuffer< uint8_t >	buffer
NBuffer< Frame > *	callback_buffer_ptr
AudioInfo	cfg
AudioInfo	info
bool	is_active = false
bool	is_notify_active = true
bool	is_notify_active = true
Vector< AudioInfoSupport * >	notify_vector
Vector< AudioInfoSupport * >	notify_vector
Stream *	p_in = nullptr
Print *	p_out = nullptr
SingleBuffer< uint8_t >	tmp {MAX_SINGLE_CHARS}
RingBuffer< uint8_t >	tmp_in {0}
RingBuffer< uint8_t >	tmp_out {0}
int	tmpPos = 0

Detailed Description

ESP8266Audio AudioOutput class which stores the data in a temporary buffer. The buffer can be consumed e.g. by a callback function by calling read(); Dependencies: ESP8266Audio Library Dependencies: ESP32-A2DP Library.

Author

Phil Schatzmann

Copyright

GPLv3

Member Function Documentation

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/AudioLibs/AudioESP8266.h