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dexed/JuceLibraryCode/modules/juce_audio_utils/players/juce_AudioProcessorPlayer.h

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3.6 KiB

/*
==============================================================================
This file is part of the JUCE library.
Copyright (c) 2015 - ROLI Ltd.
Permission is granted to use this software under the terms of either:
a) the GPL v2 (or any later version)
b) the Affero GPL v3
Details of these licenses can be found at: www.gnu.org/licenses
JUCE is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
------------------------------------------------------------------------------
To release a closed-source product which uses JUCE, commercial licenses are
available: visit www.juce.com for more information.
==============================================================================
*/
#ifndef JUCE_AUDIOPROCESSORPLAYER_H_INCLUDED
#define JUCE_AUDIOPROCESSORPLAYER_H_INCLUDED
//==============================================================================
/**
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.
@see AudioProcessor, AudioProcessorGraph
*/
class JUCE_API AudioProcessorPlayer : public AudioIODeviceCallback,
public MidiInputCallback
{
public:
//==============================================================================
AudioProcessorPlayer();
/** Destructor. */
virtual ~AudioProcessorPlayer();
//==============================================================================
/** 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.
*/
void setProcessor (AudioProcessor* processorToPlay);
/** Returns the current audio processor that is being played. */
AudioProcessor* getCurrentProcessor() const noexcept { return processor; }
/** 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.
*/
MidiMessageCollector& getMidiMessageCollector() noexcept { return messageCollector; }
//==============================================================================
/** @internal */
void audioDeviceIOCallback (const float**, int, float**, int, int) override;
/** @internal */
void audioDeviceAboutToStart (AudioIODevice*) override;
/** @internal */
void audioDeviceStopped() override;
/** @internal */
void handleIncomingMidiMessage (MidiInput*, const MidiMessage&) override;
private:
//==============================================================================
AudioProcessor* processor;
CriticalSection lock;
double sampleRate;
int blockSize;
bool isPrepared;
int numInputChans, numOutputChans;
HeapBlock<float*> channels;
AudioSampleBuffer tempBuffer;
MidiBuffer incomingMidi;
MidiMessageCollector messageCollector;
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AudioProcessorPlayer)
};
#endif // JUCE_AUDIOPROCESSORPLAYER_H_INCLUDED