An AudioIODeviceCallback object which streams audio through an AudioProcessor. More...

#include <juce_AudioProcessorPlayer.h>

Inheritance diagram for juce::AudioProcessorPlayer:

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Collaboration diagram for juce::AudioProcessorPlayer:

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Classes
struct	NumChannels

Public Member Functions
	AudioProcessorPlayer (bool doDoublePrecisionProcessing=false)

	~AudioProcessorPlayer () override
	Destructor.

void	audioDeviceAboutToStart (AudioIODevice *) override

virtual void	audioDeviceError (const String &errorMessage)
	This can be overridden to be told if the device generates an error while operating.

void	audioDeviceIOCallbackWithContext (const float const , int, float const , int, int, const AudioIODeviceCallbackContext &) override

void	audioDeviceStopped () override

AudioProcessor *	getCurrentProcessor () const noexcept
	Returns the current audio processor that is being played.

bool	getDoublePrecisionProcessing ()
	Returns true if this player processes internally processes the samples with double floating point precision.

MidiMessageCollector &	getMidiMessageCollector () noexcept
	Returns a midi message collector that you can pass midi messages to if you want them to be injected into the midi stream that is being sent to the processor.

void	handleIncomingMidiMessage (MidiInput *, const MidiMessage &) override

virtual void	handlePartialSysexMessage (MidiInput source, const uint8 messageData, int numBytesSoFar, double timestamp)
	Notification sent each time a packet of a multi-packet sysex message arrives.

void	setDoublePrecisionProcessing (bool doublePrecision)
	Switch between double and single floating point precisions processing.

void	setMidiOutput (MidiOutput *midiOutputToUse)
	Sets the MIDI output that should be used, if required.

void	setProcessor (AudioProcessor *processorToPlay)
	Sets the processor that should be played.

Private Member Functions
NumChannels	findMostSuitableLayout (const AudioProcessor &) const

void	resizeChannels ()

Private Attributes
NumChannels	actualProcessorChannels

int	blockSize = 0

std::vector< float * >	channels

AudioBuffer< double >	conversionBuffer

AudioIODevice *	currentDevice = nullptr

AudioWorkgroup	currentWorkgroup

NumChannels	defaultProcessorChannels

NumChannels	deviceChannels

MidiBuffer	incomingMidi

bool	isDoublePrecision = false

bool	isPrepared = false

CriticalSection	lock

MidiMessageCollector	messageCollector

MidiOutput *	midiOutput = nullptr

AudioProcessor *	processor = nullptr

uint64_t	sampleCount = 0

double	sampleRate = 0

AudioBuffer< float >	tempBuffer

Detailed Description

An AudioIODeviceCallback object which streams audio through an AudioProcessor.

To use one of these, just make it the callback used by your AudioIODevice, and give it a processor to use by calling setProcessor().

It's also a MidiInputCallback, so you can connect it to both an audio and midi input to send both streams through the processor. To set a MidiOutput for the processor, use the setMidiOutput() method.

See also: AudioProcessor, AudioProcessorGraph

@tags{Audio}

Constructor & Destructor Documentation

◆ AudioProcessorPlayer()

juce::AudioProcessorPlayer::AudioProcessorPlayer ( bool doDoublePrecisionProcessing = false )

◆ ~AudioProcessorPlayer()

juce::AudioProcessorPlayer::~AudioProcessorPlayer ( )

override

Destructor.

Member Function Documentation

◆ audioDeviceAboutToStart()

void juce::AudioProcessorPlayer::audioDeviceAboutToStart ( AudioIODevice * )

overridevirtual

Implements juce::AudioIODeviceCallback.

Referenced by juce::StandalonePluginHolder::audioDeviceAboutToStart().

◆ audioDeviceError()

virtual void juce::AudioIODeviceCallback::audioDeviceError ( const String & errorMessage )

virtualinherited

This can be overridden to be told if the device generates an error while operating.

Be aware that this could be called by any thread! And not all devices perform this callback.

Reimplemented in juce::SoundPlayer.

◆ audioDeviceIOCallbackWithContext()

void juce::AudioProcessorPlayer::audioDeviceIOCallbackWithContext	(	const float const	,
		int	,
		float const	,
		int	,
		int	,
		const AudioIODeviceCallbackContext &
	)

overridevirtual

Reimplemented from juce::AudioIODeviceCallback.

Referenced by juce::StandalonePluginHolder::audioDeviceIOCallbackWithContext().

◆ audioDeviceStopped()

void juce::AudioProcessorPlayer::audioDeviceStopped ( )

overridevirtual

Implements juce::AudioIODeviceCallback.

Referenced by juce::StandalonePluginHolder::audioDeviceStopped().

◆ findMostSuitableLayout()

NumChannels juce::AudioProcessorPlayer::findMostSuitableLayout ( const AudioProcessor & ) const

private

◆ getCurrentProcessor()

AudioProcessor * juce::AudioProcessorPlayer::getCurrentProcessor ( ) const

inlinenoexcept

Returns the current audio processor that is being played.

◆ getDoublePrecisionProcessing()

bool juce::AudioProcessorPlayer::getDoublePrecisionProcessing ( )

inline

Returns true if this player processes internally processes the samples with double floating point precision.

◆ getMidiMessageCollector()

MidiMessageCollector & juce::AudioProcessorPlayer::getMidiMessageCollector ( )

inlinenoexcept

Returns a midi message collector that you can pass midi messages to if you want them to be injected into the midi stream that is being sent to the processor.

Referenced by juce::StandalonePluginHolder::startPlaying().

◆ handleIncomingMidiMessage()

void juce::AudioProcessorPlayer::handleIncomingMidiMessage	(	MidiInput *	,
		const MidiMessage &
	)

overridevirtual

Implements juce::MidiInputCallback.

◆ handlePartialSysexMessage()

virtual void juce::MidiInputCallback::handlePartialSysexMessage	(	MidiInput *	source,
		const uint8 *	messageData,
		int	numBytesSoFar,
		double	timestamp
	)

virtualinherited

Notification sent each time a packet of a multi-packet sysex message arrives.

If a long sysex message is broken up into multiple packets, this callback is made for each packet that arrives until the message is finished, at which point the normal handleIncomingMidiMessage() callback will be made with the entire message.

The message passed in will contain the start of a sysex, but won't be finished with the terminating 0xf7 byte.

◆ resizeChannels()

void juce::AudioProcessorPlayer::resizeChannels ( )

private

◆ setDoublePrecisionProcessing()

void juce::AudioProcessorPlayer::setDoublePrecisionProcessing ( bool doublePrecision )

Switch between double and single floating point precisions processing.

The audio IO callbacks will still operate in single floating point precision, however, all internal processing including the AudioProcessor will be processed in double floating point precision if the AudioProcessor supports it (see AudioProcessor::supportsDoublePrecisionProcessing()). Otherwise, the processing will remain single precision irrespective of the parameter doublePrecision.

◆ setMidiOutput()

void juce::AudioProcessorPlayer::setMidiOutput ( MidiOutput * midiOutputToUse )

Sets the MIDI output that should be used, if required.

The MIDI output will not be deleted or owned by this object. If the MIDI output is deleted, pass a nullptr to this method.

Referenced by juce::StandalonePluginHolder::audioDeviceAboutToStart(), and juce::StandalonePluginHolder::audioDeviceStopped().

◆ setProcessor()

void juce::AudioProcessorPlayer::setProcessor ( AudioProcessor * processorToPlay )

Sets the processor that should be played.

The processor that is passed in will not be deleted or owned by this object. To stop anything playing, pass a nullptr to this method.

Referenced by juce::StandalonePluginHolder::startPlaying(), and juce::StandalonePluginHolder::stopPlaying().

Member Data Documentation

◆ actualProcessorChannels

NumChannels juce::AudioProcessorPlayer::actualProcessorChannels

private

◆ blockSize

int juce::AudioProcessorPlayer::blockSize = 0

private

◆ channels

std::vector<float*> juce::AudioProcessorPlayer::channels

private

◆ conversionBuffer

AudioBuffer<double> juce::AudioProcessorPlayer::conversionBuffer

private

◆ currentDevice

AudioIODevice* juce::AudioProcessorPlayer::currentDevice = nullptr

private

◆ currentWorkgroup

AudioWorkgroup juce::AudioProcessorPlayer::currentWorkgroup

private

◆ defaultProcessorChannels

NumChannels juce::AudioProcessorPlayer::defaultProcessorChannels

private

◆ deviceChannels

NumChannels juce::AudioProcessorPlayer::deviceChannels

private

◆ incomingMidi

MidiBuffer juce::AudioProcessorPlayer::incomingMidi

private

◆ isDoublePrecision

bool juce::AudioProcessorPlayer::isDoublePrecision = false

private

◆ isPrepared

bool juce::AudioProcessorPlayer::isPrepared = false

private

◆ lock

CriticalSection juce::AudioProcessorPlayer::lock

private

◆ messageCollector

MidiMessageCollector juce::AudioProcessorPlayer::messageCollector

private

◆ midiOutput

MidiOutput* juce::AudioProcessorPlayer::midiOutput = nullptr

private

◆ processor

AudioProcessor* juce::AudioProcessorPlayer::processor = nullptr

private

◆ sampleCount

uint64_t juce::AudioProcessorPlayer::sampleCount = 0

private

◆ sampleRate

double juce::AudioProcessorPlayer::sampleRate = 0

private

◆ tempBuffer

AudioBuffer<float> juce::AudioProcessorPlayer::tempBuffer

private

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

juce_AudioProcessorPlayer.h

Classes

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ AudioProcessorPlayer()

◆ ~AudioProcessorPlayer()

Member Function Documentation

◆ audioDeviceAboutToStart()

◆ audioDeviceError()

◆ audioDeviceIOCallbackWithContext()

◆ audioDeviceStopped()

◆ findMostSuitableLayout()

◆ getCurrentProcessor()

◆ getDoublePrecisionProcessing()

◆ getMidiMessageCollector()

◆ handleIncomingMidiMessage()

◆ handlePartialSysexMessage()

◆ resizeChannels()

◆ setDoublePrecisionProcessing()

◆ setMidiOutput()

◆ setProcessor()

Member Data Documentation

◆ actualProcessorChannels

◆ blockSize

◆ channels

◆ conversionBuffer

◆ currentDevice

◆ currentWorkgroup

◆ defaultProcessorChannels

◆ deviceChannels

◆ incomingMidi

◆ isDoublePrecision

◆ isPrepared

◆ lock

◆ messageCollector

◆ midiOutput

◆ processor

◆ sampleCount

◆ sampleRate

◆ tempBuffer