The software device is a generic device with software mixing. More...

#include <SoftwareDevice.h>

Inheritance diagram for SoftwareDevice:

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Classes
class	SoftwareHandle
	Saves the data for playback. More...

Public Member Functions
void	setQuality (ResampleQuality quality)
	Sets the resampling quality.

virtual DeviceSpecs	getSpecs () const
	Returns the specification of the device.

virtual std::shared_ptr< IHandle >	play (std::shared_ptr< IReader > reader, bool keep=false)
	Plays a sound source.

virtual std::shared_ptr< IHandle >	play (std::shared_ptr< ISound > sound, bool keep=false)
	Plays a sound source.

virtual void	stopAll ()
	Stops all playing sounds.

virtual void	lock ()
	Locks the device.

virtual void	unlock ()
	Unlocks the previously locked device.

virtual float	getVolume () const
	Retrieves the overall device volume.

virtual void	setVolume (float volume)
	Sets the overall device volume.

virtual ISynchronizer *	getSynchronizer ()
	Retrieves the synchronizer for this device, which enables accurate synchronization between audio playback and video playback for example.

virtual Vector3	getListenerLocation () const
	Retrieves the listener location.

virtual void	setListenerLocation (const Vector3 &location)
	Sets the listener location.

virtual Vector3	getListenerVelocity () const
	Retrieves the listener velocity.

virtual void	setListenerVelocity (const Vector3 &velocity)
	Sets the listener velocity.

virtual Quaternion	getListenerOrientation () const
	Retrieves the listener orientation.

virtual void	setListenerOrientation (const Quaternion &orientation)
	Sets the listener orientation.

virtual float	getSpeedOfSound () const
	Retrieves the speed of sound.

virtual void	setSpeedOfSound (float speed)
	Sets the speed of sound.

virtual float	getDopplerFactor () const
	Retrieves the doppler factor.

virtual void	setDopplerFactor (float factor)
	Sets the doppler factor.

virtual DistanceModel	getDistanceModel () const
	Retrieves the distance model.

virtual void	setDistanceModel (DistanceModel model)
	Sets the distance model.

Public Member Functions inherited from IDevice
virtual	~IDevice ()
	Destroys the device.

Static Public Member Functions
static void	setPanning (IHandle *handle, float pan)
	Sets the panning of a specific handle.

Protected Member Functions
void	create ()
	Initializes member variables.

void	destroy ()
	Uninitializes member variables.

void	mix (data_t *buffer, int length)
	Mixes the next samples into the buffer.

virtual void	playing (bool playing)=0
	This function tells the device, to start or pause playback.

void	setSpecs (Specs specs)
	Sets the audio output specification of the device.

void	setSpecs (DeviceSpecs specs)
	Sets the audio output specification of the device.

	SoftwareDevice ()
	Empty default constructor.

Protected Attributes
DeviceSpecs	m_specs
	The specification of the device.

std::shared_ptr< Mixer >	m_mixer
	The mixer.

ResampleQuality	m_quality
	Resampling quality.

Detailed Description

The software device is a generic device with software mixing.

It is a base class for all software mixing classes. Classes implementing this have to:

Implement the playing function.
Prepare the m_specs, m_mixer variables.
Call the create and destroy functions.
Call the mix function to retrieve their audio data.

Constructor & Destructor Documentation

◆ SoftwareDevice()

SoftwareDevice::SoftwareDevice ( )

protected

Empty default constructor.

To setup the device call the function create() and to uninitialize call destroy().

Member Function Documentation

◆ getDistanceModel()

virtual DistanceModel SoftwareDevice::getDistanceModel ( ) const

virtual

Retrieves the distance model.

Returns: The distance model.

Implements I3DDevice.

◆ getDopplerFactor()

virtual float SoftwareDevice::getDopplerFactor ( ) const

virtual

Retrieves the doppler factor.

This value is a scaling factor for the velocity vectors of sources and listener which is used while calculating the doppler effect.

Returns: The doppler factor.

Implements I3DDevice.

◆ getListenerLocation()

virtual Vector3 SoftwareDevice::getListenerLocation ( ) const

virtual

Retrieves the listener location.

Returns: The listener location.

Implements I3DDevice.

◆ getListenerOrientation()

virtual Quaternion SoftwareDevice::getListenerOrientation ( ) const

virtual

Retrieves the listener orientation.

Returns: The listener orientation as quaternion.

Implements I3DDevice.

◆ getListenerVelocity()

virtual Vector3 SoftwareDevice::getListenerVelocity ( ) const

virtual

Retrieves the listener velocity.

Returns: The listener velocity.

Implements I3DDevice.

◆ getSpecs()

virtual DeviceSpecs SoftwareDevice::getSpecs ( ) const

virtual

Returns the specification of the device.

Implements IDevice.

◆ getSpeedOfSound()

virtual float SoftwareDevice::getSpeedOfSound ( ) const

virtual

Retrieves the speed of sound.

This value is needed for doppler effect calculation.

Returns: The speed of sound.

Implements I3DDevice.

◆ getSynchronizer()

virtual ISynchronizer * SoftwareDevice::getSynchronizer ( )

virtual

Retrieves the synchronizer for this device, which enables accurate synchronization between audio playback and video playback for example.

Returns: The synchronizer which will be the DefaultSynchronizer if synchonization is not supported.

Implements IDevice.

Reimplemented in CoreAudioDevice, JackDevice, and PulseAudioDevice.

◆ getVolume()

virtual float SoftwareDevice::getVolume ( ) const

virtual

Retrieves the overall device volume.

Returns: The overall device volume.

Implements IDevice.

◆ lock()

virtual void SoftwareDevice::lock ( )

virtual

Locks the device.

Used to make sure that between lock and unlock, no buffers are read, so that it is possible to start, resume, pause, stop or seek several playback handles simultaneously.

Warning: Make sure the locking time is as small as possible to avoid playback delays that result in unexpected noise and cracks.

Implements IDevice.

◆ mix()

void SoftwareDevice::mix	(	data_t *	buffer,
		int	length )

protected

Mixes the next samples into the buffer.

Parameters

buffer	The target buffer.
length	The length in samples to be filled.

◆ play() [1/2]

virtual std::shared_ptr< IHandle > SoftwareDevice::play	(	std::shared_ptr< IReader >	reader,
		bool	keep = false )

virtual

Plays a sound source.

Parameters

reader	The reader to play.
keep	When keep is true the sound source will not be deleted but set to paused when its end has been reached.

Returns: Returns a handle with which the playback can be controlled. This is nullptr if the sound couldn't be played back.

Exceptions

Exception Thrown if there's an unexpected (from the device side) error during creation of the reader.

Implements IDevice.

◆ play() [2/2]

virtual std::shared_ptr< IHandle > SoftwareDevice::play	(	std::shared_ptr< ISound >	sound,
		bool	keep = false )

virtual

Plays a sound source.

Parameters

sound	The sound to create the reader for the sound source.
keep	When keep is true the sound source will not be deleted but set to paused when its end has been reached.

Returns: Returns a handle with which the playback can be controlled. This is nullptr if the sound couldn't be played back.

Exceptions

Exception Thrown if there's an unexpected (from the device side) error during creation of the reader.

Implements IDevice.

◆ playing()

virtual void SoftwareDevice::playing ( bool playing )

protectedpure virtual

This function tells the device, to start or pause playback.

Parameters

playing True if device should playback.

Note: This method is only called when the device is locked.

Implemented in OpenCloseDevice, ReadDevice, ThreadedDevice, JackDevice, PulseAudioDevice, and SDLDevice.

◆ setDistanceModel()

virtual void SoftwareDevice::setDistanceModel ( DistanceModel model )

virtual

Sets the distance model.

Parameters

model distance model.

Implements I3DDevice.

◆ setDopplerFactor()

virtual void SoftwareDevice::setDopplerFactor ( float factor )

virtual

Sets the doppler factor.

This value is a scaling factor for the velocity vectors of sources and listener which is used while calculating the doppler effect.

Parameters

factor The new doppler factor.

Implements I3DDevice.

◆ setListenerLocation()

virtual void SoftwareDevice::setListenerLocation ( const Vector3 & location )

virtual

Sets the listener location.

Parameters

location The new location.

Note: The location is not updated with the velocity and remains constant until the next call of this method.

Implements I3DDevice.

◆ setListenerOrientation()

virtual void SoftwareDevice::setListenerOrientation ( const Quaternion & orientation )

virtual

Sets the listener orientation.

Parameters

orientation The new orientation as quaternion.

Note: The coordinate system used is right handed and the listener by default is oriented looking in the negative z direction with the positive y axis as up direction.

Implements I3DDevice.

◆ setListenerVelocity()

virtual void SoftwareDevice::setListenerVelocity ( const Vector3 & velocity )

virtual

Sets the listener velocity.

Parameters

velocity The new velocity.

Note: This velocity does not change the position of the listener over time, it is simply used for the calculation of the doppler effect.

Implements I3DDevice.

◆ setPanning()

static void SoftwareDevice::setPanning	(	IHandle *	handle,
		float	pan )

static

Sets the panning of a specific handle.

Parameters

handle	The handle to set the panning from.
pan	The new panning value, should be in the range [-2, 2].

◆ setQuality()

void SoftwareDevice::setQuality ( ResampleQuality quality )

Sets the resampling quality.

Parameters

quality Resampling quality vs performance setting.

◆ setSpecs() [1/2]

void SoftwareDevice::setSpecs ( DeviceSpecs specs )

protected

Sets the audio output specification of the device.

Parameters

specs The output specification.

◆ setSpecs() [2/2]

void SoftwareDevice::setSpecs ( Specs specs )

protected

Sets the audio output specification of the device.

Parameters

specs The output specification.

◆ setSpeedOfSound()

virtual void SoftwareDevice::setSpeedOfSound ( float speed )

virtual

Sets the speed of sound.

This value is needed for doppler effect calculation.

Parameters

speed The new speed of sound.

Implements I3DDevice.

◆ setVolume()

virtual void SoftwareDevice::setVolume ( float volume )

virtual

Sets the overall device volume.

Parameters

volume The overall device volume.

Implements IDevice.

◆ stopAll()

virtual void SoftwareDevice::stopAll ( )

virtual

Stops all playing sounds.

Implements IDevice.

◆ unlock()

virtual void SoftwareDevice::unlock ( )

virtual

Unlocks the previously locked device.

Implements IDevice.

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

devices/SoftwareDevice.h

Classes

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ SoftwareDevice()

Member Function Documentation

◆ getDistanceModel()

◆ getDopplerFactor()

◆ getListenerLocation()

◆ getListenerOrientation()

◆ getListenerVelocity()

◆ getSpecs()

◆ getSpeedOfSound()

◆ getSynchronizer()

◆ getVolume()

◆ lock()

◆ mix()

◆ play() [1/2]

◆ play() [2/2]

◆ playing()

◆ setDistanceModel()

◆ setDopplerFactor()

◆ setListenerLocation()

◆ setListenerOrientation()

◆ setListenerVelocity()

◆ setPanning()

◆ setQuality()

◆ setSpecs() [1/2]

◆ setSpecs() [2/2]

◆ setSpeedOfSound()

◆ setVolume()

◆ stopAll()

◆ unlock()