AudioNode that plays the loaded audio file. More...

#include <AudioPlayerNode.hpp>

Inheritance diagram for switchboard::AudioPlayerNode:

Public Member Functions
WASM	AudioPlayerNode ()
	Creates a AudioPlayerNode instance.

WASM	~AudioPlayerNode ()
	AudioPlayerNode destructor.

bool	load (const std::string &path, Codec format)
	Loads an entire audio file from the given path to the memory. Stops playback.

bool	load (const std::vector< uint8 > &inputData, Codec format)
	Loads encoded audio data. Stops playback.

WASM bool	load (AudioBuffer< float > &audioBuffer, bool copyData)
	Loads audio data from an AudioBuffer instance.

bool	stream (const std::string &path, Codec format)
	Starts streaming an audio file from the given path. Stops playback.

WASM void	play ()
	Starts the audio playback.

WASM void	pause ()
	Pauses the audio playback.

WASM void	stop ()
	Stops the audio playback.

WASM bool	isPlaying () const
	Indicates whether the system is currently playing.

WASM bool	isLoopingEnabled () const
	Indicates whether looping of the audio file is enabled.

WASM uint	getNumberOfChannels () const
	Gets the number of channels that the audio node will output. Default: 2 (stereo)

WASM void	setNumberOfChannels (const uint numberOfChannels)
	Sets the number of channels that the audio node will output.

WASM uint	getSourceSampleRate () const
	Gets the sample rate of the current audio source. SAMPLE_RATE_UNDEFINED is returned if there is none.

WASM uint	getSourceNumberOfChannels () const
	Gets the number of channels of the current audio source. NUM_CHANNELS_UNDEFINED is returned if there is none.

WASM void	setLoopingEnabled (bool loopingEnabled)
	Indicates whether looping of the audio file is enabled.

WASM double	getPosition () const

WASM double	getDuration () const

WASM void	setPosition (double position)

double	getStartPosition () const

void	setStartPosition (double startPosition)

double	getEndPosition () const

void	setEndPosition (double endPosition)

bool	setBusFormat (AudioBusFormat &busFormat) override
	Sets bus format.

bool	produce (AudioBus &bus) override
	Produces audio data in the given bus.

Public Member Functions inherited from switchboard::SingleBusAudioSourceNode
bool	setNumberOfBuses (const uint numberOfBuses) override
	Sets number of buses.

bool	setBusFormats (AudioBusFormatList &busFormats) override
	Sets bus formats.

bool	produce (AudioBusList &buses) override
	Produces audio data in the given buses.

Public Member Functions inherited from switchboard::AudioNode
	AudioNode ()
	AudioNode constructor.

virtual	~AudioNode ()=default
	AudioNode virtual destructor.

const std::string &	getType () const
	Gets the type of the audio node.

virtual const std::string	getDisplayName () const
	Gets the display name of the audio node.

virtual std::vector< std::unique_ptr< Parameter > > &	getParameters ()
	Gets the parameters of the audio node.

virtual Parameter *	getParameter (const std::string &name)
	Gets the parameter with the given name.

Additional Inherited Members
Public Attributes inherited from switchboard::AudioNode
std::string	name
	The name of the audio node.

Protected Attributes inherited from switchboard::AudioNode
std::string	type

std::vector< std::unique_ptr< Parameter > >	parameters

Detailed Description

AudioNode that plays the loaded audio file.

AudioPlayerNode class.

Member Function Documentation

◆ getDuration()

double switchboard::AudioPlayerNode::getDuration ( ) const

The duration of the currently playing media.

Returns: The duration of the media in seconds.

◆ getEndPosition()

double switchboard::AudioPlayerNode::getEndPosition ( ) const

Indicates the current end position of the playback.

Returns: Returns the current end position in seconds.

◆ getNumberOfChannels()

uint switchboard::AudioPlayerNode::getNumberOfChannels ( ) const

Gets the number of channels that the audio node will output. Default: 2 (stereo)

Returns: The output number of channels.

◆ getPosition()

double switchboard::AudioPlayerNode::getPosition ( ) const

Indicates the current position of the playback head.

Returns: Returns the elapsed time in seconds.

◆ getSourceNumberOfChannels()

uint switchboard::AudioPlayerNode::getSourceNumberOfChannels ( ) const

Gets the number of channels of the current audio source. NUM_CHANNELS_UNDEFINED is returned if there is none.

Returns: The current audio source's number of channels.

◆ getSourceSampleRate()

uint switchboard::AudioPlayerNode::getSourceSampleRate ( ) const

Gets the sample rate of the current audio source. SAMPLE_RATE_UNDEFINED is returned if there is none.

Returns: The current audio source's sample rate.

◆ getStartPosition()

double switchboard::AudioPlayerNode::getStartPosition ( ) const

Indicates the current start position of the playback.

Returns: Returns the current start position in seconds.

◆ isLoopingEnabled()

bool switchboard::AudioPlayerNode::isLoopingEnabled ( ) const

Indicates whether looping of the audio file is enabled.

Returns: True when it is enabled, false when it is not.

◆ isPlaying()

bool switchboard::AudioPlayerNode::isPlaying ( ) const

Indicates whether the system is currently playing.

Returns: True when it is playing, false when it is not.

◆ load() [1/3]

bool switchboard::AudioPlayerNode::load	(	AudioBuffer< float > &	audioBuffer,
		bool	copyData )

Loads audio data from an AudioBuffer instance.

Parameters

audioBuffer	The audio buffer containing the audio data.
copyData	When set to true, the audio data from the audio buffer will be copied and stored in the AudioPlayerNode instance.

Returns: True when loading the audio data was successful, false otherwise.

◆ load() [2/3]

bool switchboard::AudioPlayerNode::load	(	const std::string &	path,
		Codec	format )

Loads an entire audio file from the given path to the memory. Stops playback.

Parameters

path	The path to the audio file to load.
format	The audio recording format.

Returns: True when loading of the audio file was successful, false otherwise.

◆ load() [3/3]

bool switchboard::AudioPlayerNode::load	(	const std::vector< uint8 > &	inputData,
		Codec	format )

Loads encoded audio data. Stops playback.

Parameters

inputData	Vector containing the encoded audio data.
format	The audio encoding format.

Returns: True when loading the audio data was successful, false otherwise.

◆ produce()

bool switchboard::AudioPlayerNode::produce ( AudioBus & bus )

overridevirtual

Produces audio data in the given bus.

Should be overridden by subclasses.

Parameters

bus	The bus that should be filled with audio data.

Returns: True if audio was produced successfully, false otherwise.

Implements switchboard::SingleBusAudioSourceNode.

◆ setBusFormat()

bool switchboard::AudioPlayerNode::setBusFormat ( AudioBusFormat & busFormat )

overridevirtual

Sets bus format.

Should be overridden by subclasses.

Parameters

busFormat The bus format to set.

Returns: True if the bus format was set successfully, false otherwise.

Implements switchboard::SingleBusAudioSourceNode.

◆ setEndPosition()

void switchboard::AudioPlayerNode::setEndPosition ( double endPosition )

Sets the ending position of the playback. Only takes effect after audio is loaded.

Parameters

endPosition The desired position in seconds.

◆ setLoopingEnabled()

void switchboard::AudioPlayerNode::setLoopingEnabled ( bool loopingEnabled )

Indicates whether looping of the audio file is enabled.

Parameters

loopingEnabled True when it is enabled, false when it is not.

◆ setNumberOfChannels()

void switchboard::AudioPlayerNode::setNumberOfChannels ( const uint numberOfChannels )

Sets the number of channels that the audio node will output.

Parameters

numberOfChannels The new number of channels setting.

◆ setPosition()

void switchboard::AudioPlayerNode::setPosition ( double position )

Sets the playback head to the desired position.

Parameters

position The desired position in seconds.

◆ setStartPosition()

void switchboard::AudioPlayerNode::setStartPosition ( double startPosition )

Sets the starting position of the playback. Only takes effect after audio is loaded.

Parameters

startPosition The desired position in seconds.

◆ stream()

bool switchboard::AudioPlayerNode::stream	(	const std::string &	path,
		Codec	format )

Starts streaming an audio file from the given path. Stops playback.

Using this method, instead of load, is more memory efficient as it does not load the entire audio file to memory. However, seeking the audio might take longer.

Parameters

path	The path to the audio file to stream.
format	The audio recording format.

Returns: True when streaming of the audio file could be started, false otherwise.

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ getDuration()

◆ getEndPosition()

◆ getNumberOfChannels()

◆ getPosition()

◆ getSourceNumberOfChannels()

◆ getSourceSampleRate()

◆ getStartPosition()

◆ isLoopingEnabled()

◆ isPlaying()

◆ load() [1/3]

◆ load() [2/3]

◆ load() [3/3]

◆ produce()

◆ setBusFormat()

◆ setEndPosition()

◆ setLoopingEnabled()

◆ setNumberOfChannels()

◆ setPosition()

◆ setStartPosition()

◆ stream()