Plays back a node with mutiple threads. More...

Classes
struct	ThreadPool
	Base class for thread pools which can be customised to determine how cooperative threads should behave. More...

Public Types
using	ThreadPoolCreator = std::function< std::unique_ptr< ThreadPool >(LockFreeMultiThreadedNodePlayer &)>

Public Member Functions
	LockFreeMultiThreadedNodePlayer ()
	Creates an empty LockFreeMultiThreadedNodePlayer. More...

	LockFreeMultiThreadedNodePlayer (ThreadPoolCreator)
	Creates an empty LockFreeMultiThreadedNodePlayer with a specified ThreadPool type. More...

	~LockFreeMultiThreadedNodePlayer ()
	Destructor. More...

void	setNumThreads (size_t)
	Sets the number of threads to use for rendering. More...

void	setNode (std::unique_ptr< Node >)
	Sets the Node to process. More...

void	setNode (std::unique_ptr< Node > newNode, double sampleRateToUse, int blockSizeToUse)
	Sets the Node to process with a new sample rate and block size. More...

void	prepareToPlay (double sampleRateToUse, int blockSizeToUse)
	Prepares the current Node to be played. More...

Node *	getNode ()
	Returns the current Node. More...

int	process (const Node::ProcessContext &)
	Process a block of the Node. More...

void	clearNode ()
	Clears the current Node. More...

double	getSampleRate () const
	Returns the current sample rate. More...

void	enablePooledMemoryAllocations (bool)
	Enables or disables the use on an AudioBufferPool to reduce memory consumption. More...

Detailed Description

Plays back a node with mutiple threads.

The setting of Nodes and processing are all lock-free. This means the player can be real-time safe as long as your provided ThreadPool doesn't do any non-real-time operations in the wait/signal methods.

Member Typedef Documentation

◆ ThreadPoolCreator

using tracktion::graph::LockFreeMultiThreadedNodePlayer::ThreadPoolCreator = std::function<std::unique_ptr<ThreadPool> (LockFreeMultiThreadedNodePlayer&)>

Constructor & Destructor Documentation

◆ LockFreeMultiThreadedNodePlayer() [1/2]

tracktion::graph::LockFreeMultiThreadedNodePlayer::LockFreeMultiThreadedNodePlayer ( )

Creates an empty LockFreeMultiThreadedNodePlayer.

◆ LockFreeMultiThreadedNodePlayer() [2/2]

tracktion::graph::LockFreeMultiThreadedNodePlayer::LockFreeMultiThreadedNodePlayer ( ThreadPoolCreator )

Creates an empty LockFreeMultiThreadedNodePlayer with a specified ThreadPool type.

◆ ~LockFreeMultiThreadedNodePlayer()

tracktion::graph::LockFreeMultiThreadedNodePlayer::~LockFreeMultiThreadedNodePlayer ( )

Destructor.

Member Function Documentation

◆ setNumThreads()

void tracktion::graph::LockFreeMultiThreadedNodePlayer::setNumThreads ( size_t )

Sets the number of threads to use for rendering.

This can be 0 in which case only the process calling thread will be used for processing. N.B. this will pause processing whilst updating the threads so there will be a gap in the audio.

Referenced by tracktion::engine::TracktionNodePlayer::setNumThreads().

◆ setNode() [1/2]

void tracktion::graph::LockFreeMultiThreadedNodePlayer::setNode ( std::unique_ptr< Node > )

Sets the Node to process.

Referenced by tracktion::engine::TracktionNodePlayer::setNode(), and tracktion::engine::TracktionNodePlayer::TracktionNodePlayer().

◆ setNode() [2/2]

void tracktion::graph::LockFreeMultiThreadedNodePlayer::setNode	(	std::unique_ptr< Node >	newNode,
		double	sampleRateToUse,
		int	blockSizeToUse
	)

Sets the Node to process with a new sample rate and block size.

◆ prepareToPlay()

void tracktion::graph::LockFreeMultiThreadedNodePlayer::prepareToPlay	(	double	sampleRateToUse,
		int	blockSizeToUse
	)

Prepares the current Node to be played.

Calling this will cause a drop in the output stream as the Node is re-prepared.

Referenced by tracktion::engine::TracktionNodePlayer::prepareToPlay().

◆ getNode()

Node* tracktion::graph::LockFreeMultiThreadedNodePlayer::getNode ( )

Returns the current Node.

Referenced by tracktion::engine::TracktionNodePlayer::getNode().

◆ process()

int tracktion::graph::LockFreeMultiThreadedNodePlayer::process ( const Node::ProcessContext & )

Process a block of the Node.

◆ clearNode()

void tracktion::graph::LockFreeMultiThreadedNodePlayer::clearNode ( )

Clears the current Node.

Note that this shouldn't be called concurrently with setNode. If it's called concurrently with process, it will block until the current process call has finished. This should be used sparingly as its a heavyweight operation which has to stop any processing threads and restart them again afterwrds.

Referenced by tracktion::engine::TracktionNodePlayer::clearNode().

◆ getSampleRate()

double tracktion::graph::LockFreeMultiThreadedNodePlayer::getSampleRate ( ) const

Returns the current sample rate.

Referenced by tracktion::engine::TracktionNodePlayer::getSampleRate().

◆ enablePooledMemoryAllocations()

void tracktion::graph::LockFreeMultiThreadedNodePlayer::enablePooledMemoryAllocations ( bool )

Enables or disables the use on an AudioBufferPool to reduce memory consumption.

Don't rely on this, it is a temporary method used for benchmarking and will go away in the future.

Referenced by tracktion::engine::TracktionNodePlayer::enablePooledMemoryAllocations().

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

tracktion_LockFreeMultiThreadedNodePlayer.h

Classes

Public Types

Public Member Functions