juce_MPESynthesiserBase.h

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/*
  ==============================================================================
 
   This file is part of the JUCE library.
   Copyright (c) 2022 - Raw Material Software Limited
 
   JUCE is an open source library subject to commercial or open-source
   licensing.
 
   The code included in this file is provided under the terms of the ISC license
   http://www.isc.org/downloads/software-support-policy/isc-license. Permission
   To use, copy, modify, and/or distribute this software for any purpose with or
   without fee is hereby granted provided that the above copyright notice and
   this permission notice appear in all copies.
 
   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
{
 
//==============================================================================
struct JUCE_API  MPESynthesiserBase   : public MPEInstrument::Listener
{
public:
    //==============================================================================
    MPESynthesiserBase();

    MPESynthesiserBase (MPEInstrument& instrument);
 
    //==============================================================================
    MPEZoneLayout getZoneLayout() const noexcept;

    void setZoneLayout (MPEZoneLayout newLayout);
 
    //==============================================================================
    virtual void setCurrentPlaybackSampleRate (double sampleRate);

    double getSampleRate() const noexcept          { return sampleRate; }
 
    //==============================================================================
    template <typename floatType>
    void renderNextBlock (AudioBuffer<floatType>& outputAudio,
                          const MidiBuffer& inputMidi,
                          int startSample,
                          int numSamples);
 
    //==============================================================================
    virtual void handleMidiEvent (const MidiMessage&);
 
    //==============================================================================
    void setMinimumRenderingSubdivisionSize (int numSamples, bool shouldBeStrict = false) noexcept;
 
    //==============================================================================
    void enableLegacyMode (int pitchbendRange = 2,
                           Range<int> channelRange = Range<int> (1, 17));

    bool isLegacyModeEnabled() const noexcept;

    Range<int> getLegacyModeChannelRange() const noexcept;

    void setLegacyModeChannelRange (Range<int> channelRange);

    int getLegacyModePitchbendRange() const noexcept;

    void setLegacyModePitchbendRange (int pitchbendRange);
 
    //==============================================================================
    using TrackingMode = MPEInstrument::TrackingMode;

    void setPressureTrackingMode (TrackingMode modeToUse);

    void setPitchbendTrackingMode (TrackingMode modeToUse);

    void setTimbreTrackingMode (TrackingMode modeToUse);
 
protected:
    //==============================================================================
    virtual void renderNextSubBlock (AudioBuffer<float>& outputAudio,
                                     int startSample,
                                     int numSamples) = 0;

    virtual void renderNextSubBlock (AudioBuffer<double>& /*outputAudio*/,
                                     int /*startSample*/,
                                     int /*numSamples*/) {}
 
protected:
    //==============================================================================
    MPEInstrument& instrument;
 
private:
    //==============================================================================
    MPEInstrument defaultInstrument { MPEZone (MPEZone::Type::lower, 15) };
 
    CriticalSection noteStateLock;
    double sampleRate = 0.0;
    int minimumSubBlockSize = 32;
    bool subBlockSubdivisionIsStrict = false;
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MPESynthesiserBase)
};
 
} // namespace juce