125 lines
4.8 KiB
C++
125 lines
4.8 KiB
C++
/*
|
|
==============================================================================
|
|
|
|
This file is part of the JUCE library.
|
|
Copyright (c) 2017 - ROLI Ltd.
|
|
|
|
JUCE is an open source library subject to commercial or open-source
|
|
licensing.
|
|
|
|
By using JUCE, you agree to the terms of both the JUCE 5 End-User License
|
|
Agreement and JUCE 5 Privacy Policy (both updated and effective as of the
|
|
27th April 2017).
|
|
|
|
End User License Agreement: www.juce.com/juce-5-licence
|
|
Privacy Policy: www.juce.com/juce-5-privacy-policy
|
|
|
|
Or: You may also use this code under the terms of the GPL v3 (see
|
|
www.gnu.org/licenses).
|
|
|
|
JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
|
|
EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
|
|
DISCLAIMED.
|
|
|
|
==============================================================================
|
|
*/
|
|
|
|
namespace juce
|
|
{
|
|
|
|
//==============================================================================
|
|
/**
|
|
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 AudioProcessor, AudioProcessorGraph
|
|
|
|
@tags{Audio}
|
|
*/
|
|
class JUCE_API AudioProcessorPlayer : public AudioIODeviceCallback,
|
|
public MidiInputCallback
|
|
{
|
|
public:
|
|
//==============================================================================
|
|
AudioProcessorPlayer (bool doDoublePrecisionProcessing = false);
|
|
|
|
/** Destructor. */
|
|
~AudioProcessorPlayer() override;
|
|
|
|
//==============================================================================
|
|
/** 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; }
|
|
|
|
/** 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.
|
|
*/
|
|
void setMidiOutput (MidiOutput* midiOutputToUse);
|
|
|
|
/** 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.
|
|
*/
|
|
void setDoublePrecisionProcessing (bool doublePrecision);
|
|
|
|
/** Returns true if this player processes internally processes the samples with
|
|
double floating point precision.
|
|
*/
|
|
inline bool getDoublePrecisionProcessing() { return isDoublePrecision; }
|
|
|
|
//==============================================================================
|
|
/** @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 = nullptr;
|
|
CriticalSection lock;
|
|
double sampleRate = 0;
|
|
int blockSize = 0;
|
|
bool isPrepared = false, isDoublePrecision = false;
|
|
|
|
int numInputChans = 0, numOutputChans = 0;
|
|
HeapBlock<float*> channels;
|
|
AudioBuffer<float> tempBuffer;
|
|
AudioBuffer<double> conversionBuffer;
|
|
|
|
MidiBuffer incomingMidi;
|
|
MidiMessageCollector messageCollector;
|
|
MidiOutput* midiOutput = nullptr;
|
|
|
|
JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (AudioProcessorPlayer)
|
|
};
|
|
|
|
} // namespace juce
|