AUMIDIEventQueue Class Reference

The AUMIDIEventQueue interface queues incoming MIDI messages and blasts them out during the buffer processing phase. More...

#include <aufxplugin.h>

Inheritance diagram for AUMIDIEventQueue:

Public Member Functions
	AUMIDIEventQueue (PluginCore *_pluginCore)
virtual	~AUMIDIEventQueue ()
void	clearEvents ()
void	clearQueueAEvents ()
void	clearQueueBEvents ()
void	toggleQueue ()
void	addEvent (midiEvent event)
virtual unsigned int	getEventCount ()
virtual bool	fireMidiEvents (unsigned int sampleOffset)
Public Member Functions inherited from IMidiEventQueue
virtual bool	fireMidiEvents (uint32_t uSampleOffset)=0

Protected Attributes
PluginCore *	pluginCore = nullptr
	the core object to send MIDI messages to
std::queue< midiEvent >	midiEventQueueA
	queue A
std::queue< midiEvent >	midiEventQueueB
	queue B
std::atomic< bool >	writingQueueA
	atomic flag for toggling buffers

Detailed Description

The AUMIDIEventQueue interface queues incoming MIDI messages and blasts them out during the buffer processing phase.

NOTES:

• the current version uses a pair of queues and an atomic boolean flag to implement a double-buffer scheme
• this will be updated later to use a lock-free ring buffer but the operation will remain transparemt

Author

Will Pirkle http://www.willpirkle.com

Remarks

This object is included in Designing Audio Effects Plugins in C++ 2nd Ed. by Will Pirkle

Version

Revision : 1.0

Date

Date : 2018 / 09 / 7

Constructor & Destructor Documentation

AUMIDIEventQueue()

AUMIDIEventQueue::AUMIDIEventQueue ( PluginCore *  _pluginCore )

inline

consruct with a core pointer

~AUMIDIEventQueue()

virtual AUMIDIEventQueue::~AUMIDIEventQueue ( )

inlinevirtual

just clear out the events that may remain

Member Function Documentation

addEvent()

void AUMIDIEventQueue::addEvent ( midiEvent  event )

inline

add a MIDI event to the currently active writing queue

clearEvents()

void AUMIDIEventQueue::clearEvents ( )

inline

clear both A and B queues

clearQueueAEvents()

void AUMIDIEventQueue::clearQueueAEvents ( )

inline

clear queue A

clearQueueBEvents()

void AUMIDIEventQueue::clearQueueBEvents ( )

inline

clear queue B

fireMidiEvents()

virtual bool AUMIDIEventQueue::fireMidiEvents ( unsigned int  sampleOffset )

inlinevirtual

send MIDI event with this sample offset to the core for processing

getEventCount()

virtual unsigned int AUMIDIEventQueue::getEventCount ( )

inlinevirtual

get a MIDI event from the currently active reading queue

Implements IMidiEventQueue.

toggleQueue()

void AUMIDIEventQueue::toggleQueue ( )

inline

atomic flag toggle

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

• C:/RackAFX_v7/ASPIK_SDK/PluginTemplate/project_source/source/au_source/aufxplugin.h