MIDIReceiver.h

#ifndef __MIDIReceiver__
#define __MIDIReceiver__

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wextra-tokens"
#include "IPlug_include_in_plug_hdr.h"
#pragma clang diagnostic pop

#include "IMidiQueue.h"

class MIDIReceiver {
private:
    IMidiQueue mMidiQueue;
    static const int keyCount = 128;
    int mNumKeys; // how many keys are being played at the moment (via midi)
    bool mKeyStatus[keyCount]; // array of on/off for each key (index is note number)
    int mLastNoteNumber;
    double mLastFrequency;
    int mLastVelocity;
    int mOffset;
    inline double noteNumberToFrequency(int noteNumber) { return 440.0 * pow(2.0, (noteNumber - 69.0) / 12.0); }

public:
    MIDIReceiver() :
    mNumKeys(0),
    mLastNoteNumber(-1),
    mLastFrequency(-1.0),
    mLastVelocity(0),
    mOffset(0) {
        for (int i = 0; i < keyCount; i++) {
            mKeyStatus[i] = false;
        }
    };

    // Returns true if the key with a given index is currently pressed
    inline bool getKeyStatus(int keyIndex) const { return mKeyStatus[keyIndex]; }
    // Returns the number of keys currently pressed
    inline int getNumKeys() const { return mNumKeys; }
    // Returns the last pressed note number
    inline int getLastNoteNumber() const { return mLastNoteNumber; }
    inline double getLastFrequency() const { return mLastFrequency; }
    inline int getLastVelocity() const { return mLastVelocity; }
    void advance();
    void onMessageReceived(IMidiMsg* midiMessage);
    inline void Flush(int nFrames) { mMidiQueue.Flush(nFrames); mOffset = 0; }
    inline void Resize(int blockSize) { mMidiQueue.Resize(blockSize); }
};

#endif