git subrepo clone --branch=sono6good https://github.com/essej/JUCE.git deps/juce

subrepo:
  subdir:   "deps/juce"
  merged:   "b13f9084e"
upstream:
  origin:   "https://github.com/essej/JUCE.git"
  branch:   "sono6good"
  commit:   "b13f9084e"
git-subrepo:
  version:  "0.4.3"
  origin:   "https://github.com/ingydotnet/git-subrepo.git"
  commit:   "2f68596"

deps/juce/modules/juce_audio_basics/midi/juce_MidiKeyboardState.cpp

@@ -0,0 +1,177 @@
+/*
+  ==============================================================================
+
+   This file is part of the JUCE library.
+   Copyright (c) 2020 - 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
+{
+
+MidiKeyboardState::MidiKeyboardState()
+{
+    zerostruct (noteStates);
+}
+
+MidiKeyboardState::~MidiKeyboardState()
+{
+}
+
+//==============================================================================
+void MidiKeyboardState::reset()
+{
+    const ScopedLock sl (lock);
+    zerostruct (noteStates);
+    eventsToAdd.clear();
+}
+
+bool MidiKeyboardState::isNoteOn (const int midiChannel, const int n) const noexcept
+{
+    jassert (midiChannel > 0 && midiChannel <= 16);
+
+    return isPositiveAndBelow (n, 128)
+            && (noteStates[n] & (1 << (midiChannel - 1))) != 0;
+}
+
+bool MidiKeyboardState::isNoteOnForChannels (const int midiChannelMask, const int n) const noexcept
+{
+    return isPositiveAndBelow (n, 128)
+            && (noteStates[n] & midiChannelMask) != 0;
+}
+
+void MidiKeyboardState::noteOn (const int midiChannel, const int midiNoteNumber, const float velocity)
+{
+    jassert (midiChannel > 0 && midiChannel <= 16);
+    jassert (isPositiveAndBelow (midiNoteNumber, 128));
+
+    const ScopedLock sl (lock);
+
+    if (isPositiveAndBelow (midiNoteNumber, 128))
+    {
+        const int timeNow = (int) Time::getMillisecondCounter();
+        eventsToAdd.addEvent (MidiMessage::noteOn (midiChannel, midiNoteNumber, velocity), timeNow);
+        eventsToAdd.clear (0, timeNow - 500);
+
+        noteOnInternal (midiChannel, midiNoteNumber, velocity);
+    }
+}
+
+void MidiKeyboardState::noteOnInternal  (const int midiChannel, const int midiNoteNumber, const float velocity)
+{
+    if (isPositiveAndBelow (midiNoteNumber, 128))
+    {
+        noteStates[midiNoteNumber] = static_cast<uint16> (noteStates[midiNoteNumber] | (1 << (midiChannel - 1)));
+        listeners.call ([&] (Listener& l) { l.handleNoteOn (this, midiChannel, midiNoteNumber, velocity); });
+    }
+}
+
+void MidiKeyboardState::noteOff (const int midiChannel, const int midiNoteNumber, const float velocity)
+{
+    const ScopedLock sl (lock);
+
+    if (isNoteOn (midiChannel, midiNoteNumber))
+    {
+        const int timeNow = (int) Time::getMillisecondCounter();
+        eventsToAdd.addEvent (MidiMessage::noteOff (midiChannel, midiNoteNumber), timeNow);
+        eventsToAdd.clear (0, timeNow - 500);
+
+        noteOffInternal (midiChannel, midiNoteNumber, velocity);
+    }
+}
+
+void MidiKeyboardState::noteOffInternal  (const int midiChannel, const int midiNoteNumber, const float velocity)
+{
+    if (isNoteOn (midiChannel, midiNoteNumber))
+    {
+        noteStates[midiNoteNumber] = static_cast<uint16> (noteStates[midiNoteNumber] & ~(1 << (midiChannel - 1)));
+        listeners.call ([&] (Listener& l) { l.handleNoteOff (this, midiChannel, midiNoteNumber, velocity); });
+    }
+}
+
+void MidiKeyboardState::allNotesOff (const int midiChannel)
+{
+    const ScopedLock sl (lock);
+
+    if (midiChannel <= 0)
+    {
+        for (int i = 1; i <= 16; ++i)
+            allNotesOff (i);
+    }
+    else
+    {
+        for (int i = 0; i < 128; ++i)
+            noteOff (midiChannel, i, 0.0f);
+    }
+}
+
+void MidiKeyboardState::processNextMidiEvent (const MidiMessage& message)
+{
+    if (message.isNoteOn())
+    {
+        noteOnInternal (message.getChannel(), message.getNoteNumber(), message.getFloatVelocity());
+    }
+    else if (message.isNoteOff())
+    {
+        noteOffInternal (message.getChannel(), message.getNoteNumber(), message.getFloatVelocity());
+    }
+    else if (message.isAllNotesOff())
+    {
+        for (int i = 0; i < 128; ++i)
+            noteOffInternal (message.getChannel(), i, 0.0f);
+    }
+}
+
+void MidiKeyboardState::processNextMidiBuffer (MidiBuffer& buffer,
+                                               const int startSample,
+                                               const int numSamples,
+                                               const bool injectIndirectEvents)
+{
+    const ScopedLock sl (lock);
+
+    for (const auto metadata : buffer)
+        processNextMidiEvent (metadata.getMessage());
+
+    if (injectIndirectEvents)
+    {
+        const int firstEventToAdd = eventsToAdd.getFirstEventTime();
+        const double scaleFactor = numSamples / (double) (eventsToAdd.getLastEventTime() + 1 - firstEventToAdd);
+
+        for (const auto metadata : eventsToAdd)
+        {
+            const auto pos = jlimit (0, numSamples - 1, roundToInt ((metadata.samplePosition - firstEventToAdd) * scaleFactor));
+            buffer.addEvent (metadata.getMessage(), startSample + pos);
+        }
+    }
+
+    eventsToAdd.clear();
+}
+
+//==============================================================================
+void MidiKeyboardState::addListener (Listener* listener)
+{
+    const ScopedLock sl (lock);
+    listeners.add (listener);
+}
+
+void MidiKeyboardState::removeListener (Listener* listener)
+{
+    const ScopedLock sl (lock);
+    listeners.remove (listener);
+}
+
+} // namespace juce