OpenShot Audio Library | OpenShotAudio  0.3.2
juce_MidiKeyboardState.h
1 /*
2  ==============================================================================
3 
4  This file is part of the JUCE library.
5  Copyright (c) 2017 - ROLI Ltd.
6 
7  JUCE is an open source library subject to commercial or open-source
8  licensing.
9 
10  The code included in this file is provided under the terms of the ISC license
11  http://www.isc.org/downloads/software-support-policy/isc-license. Permission
12  To use, copy, modify, and/or distribute this software for any purpose with or
13  without fee is hereby granted provided that the above copyright notice and
14  this permission notice appear in all copies.
15 
16  JUCE IS PROVIDED "AS IS" WITHOUT ANY WARRANTY, AND ALL WARRANTIES, WHETHER
17  EXPRESSED OR IMPLIED, INCLUDING MERCHANTABILITY AND FITNESS FOR PURPOSE, ARE
18  DISCLAIMED.
19 
20  ==============================================================================
21 */
22 
23 namespace juce
24 {
25 
26 class MidiKeyboardState;
27 
28 
29 //==============================================================================
38 {
39 public:
40  //==============================================================================
41  MidiKeyboardStateListener() = default;
42  virtual ~MidiKeyboardStateListener() = default;
43 
44  //==============================================================================
54  virtual void handleNoteOn (MidiKeyboardState* source,
55  int midiChannel, int midiNoteNumber, float velocity) = 0;
56 
66  virtual void handleNoteOff (MidiKeyboardState* source,
67  int midiChannel, int midiNoteNumber, float velocity) = 0;
68 };
69 
70 
71 //==============================================================================
86 class JUCE_API MidiKeyboardState
87 {
88 public:
89  //==============================================================================
92 
93  //==============================================================================
102  void reset();
103 
109  bool isNoteOn (int midiChannel, int midiNoteNumber) const noexcept;
110 
118  bool isNoteOnForChannels (int midiChannelMask, int midiNoteNumber) const noexcept;
119 
128  void noteOn (int midiChannel, int midiNoteNumber, float velocity);
129 
140  void noteOff (int midiChannel, int midiNoteNumber, float velocity);
141 
149  void allNotesOff (int midiChannel);
150 
151  //==============================================================================
157  void processNextMidiEvent (const MidiMessage& message);
158 
177  void processNextMidiBuffer (MidiBuffer& buffer,
178  int startSample,
179  int numSamples,
180  bool injectIndirectEvents);
181 
182  //==============================================================================
186  void addListener (MidiKeyboardStateListener* listener);
187 
191  void removeListener (MidiKeyboardStateListener* listener);
192 
193 private:
194  //==============================================================================
195  CriticalSection lock;
196  uint16 noteStates [128];
197  MidiBuffer eventsToAdd;
199 
200  void noteOnInternal (int midiChannel, int midiNoteNumber, float velocity);
201  void noteOffInternal (int midiChannel, int midiNoteNumber, float velocity);
202 
203  JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MidiKeyboardState)
204 };
205 
206 } // namespace juce
virtual void handleNoteOff(MidiKeyboardState *source, int midiChannel, int midiNoteNumber, float velocity)=0
virtual void handleNoteOn(MidiKeyboardState *source, int midiChannel, int midiNoteNumber, float velocity)=0