fix macOS build (following Projucer changes made in Windows, which removed /Applications/JUCE/modules from its headers). move JUCE headers under source control, so that Windows and macOS can both build against same version of JUCE. remove AUv3 target (I think it's an iOS thing, so it will never work with this macOS fluidsynth dylib).

modules/juce_audio_basics/mpe/juce_MPENote.cpp

@@ -0,0 +1,124 @@
+/*
+  ==============================================================================
+
+   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.
+
+   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
+{
+
+namespace
+{
+    uint16 generateNoteID (int midiChannel, int midiNoteNumber) noexcept
+    {
+        jassert (midiChannel > 0 && midiChannel <= 16);
+        jassert (midiNoteNumber >= 0 && midiNoteNumber < 128);
+
+        return uint16 ((midiChannel << 7) + midiNoteNumber);
+    }
+}
+
+//==============================================================================
+MPENote::MPENote (int midiChannel_,
+                  int initialNote_,
+                  MPEValue noteOnVelocity_,
+                  MPEValue pitchbend_,
+                  MPEValue pressure_,
+                  MPEValue timbre_,
+                  KeyState keyState_) noexcept
+    : noteID (generateNoteID (midiChannel_, initialNote_)),
+      midiChannel (uint8 (midiChannel_)),
+      initialNote (uint8 (initialNote_)),
+      noteOnVelocity (noteOnVelocity_),
+      pitchbend (pitchbend_),
+      pressure (pressure_),
+      initialTimbre (timbre_),
+      timbre (timbre_),
+      keyState (keyState_)
+{
+    jassert (keyState != MPENote::off);
+    jassert (isValid());
+}
+
+MPENote::MPENote() noexcept {}
+
+//==============================================================================
+bool MPENote::isValid() const noexcept
+{
+    return midiChannel > 0 && midiChannel <= 16 && initialNote < 128;
+}
+
+//==============================================================================
+double MPENote::getFrequencyInHertz (double frequencyOfA) const noexcept
+{
+    auto pitchInSemitones = double (initialNote) + totalPitchbendInSemitones;
+    return frequencyOfA * std::pow (2.0, (pitchInSemitones - 69.0) / 12.0);
+}
+
+//==============================================================================
+bool MPENote::operator== (const MPENote& other) const noexcept
+{
+    jassert (isValid() && other.isValid());
+    return noteID == other.noteID;
+}
+
+bool MPENote::operator!= (const MPENote& other) const noexcept
+{
+    jassert (isValid() && other.isValid());
+    return noteID != other.noteID;
+}
+
+//==============================================================================
+//==============================================================================
+#if JUCE_UNIT_TESTS
+
+class MPENoteTests : public UnitTest
+{
+public:
+    MPENoteTests() : UnitTest ("MPENote class", "MIDI/MPE") {}
+
+    //==============================================================================
+    void runTest() override
+    {
+        beginTest ("getFrequencyInHertz");
+        {
+            MPENote note;
+            note.initialNote = 60;
+            note.totalPitchbendInSemitones = -0.5;
+            expectEqualsWithinOneCent (note.getFrequencyInHertz(), 254.178);
+        }
+    }
+
+private:
+    //==============================================================================
+    void expectEqualsWithinOneCent (double frequencyInHertzActual,
+                                    double frequencyInHertzExpected)
+    {
+        double ratio = frequencyInHertzActual / frequencyInHertzExpected;
+        double oneCent = 1.0005946;
+        expect (ratio < oneCent);
+        expect (ratio > 1.0 / oneCent);
+    }
+};
+
+static MPENoteTests MPENoteUnitTests;
+
+#endif // JUCE_UNIT_TESTS
+
+} // namespace juce