OpenShot Audio Library | OpenShotAudio  0.6.0
juce_MidiMessageCollector.h
1 /*
2  ==============================================================================
3 
4  This file is part of the JUCE library.
5  Copyright (c) 2022 - Raw Material Software Limited
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 //==============================================================================
38 class JUCE_API MidiMessageCollector : public MidiKeyboardState::Listener,
39  public MidiInputCallback
40 {
41 public:
42  //==============================================================================
44  MidiMessageCollector();
45 
47  ~MidiMessageCollector() override;
48 
49  //==============================================================================
55  void reset (double sampleRate);
56 
65  void addMessageToQueue (const MidiMessage& message);
66 
81  void removeNextBlockOfMessages (MidiBuffer& destBuffer, int numSamples);
82 
89  void ensureStorageAllocated (size_t bytes);
90 
91 
92  //==============================================================================
94  void handleNoteOn (MidiKeyboardState*, int midiChannel, int midiNoteNumber, float velocity) override;
96  void handleNoteOff (MidiKeyboardState*, int midiChannel, int midiNoteNumber, float velocity) override;
98  void handleIncomingMidiMessage (MidiInput*, const MidiMessage&) override;
99 
100 private:
101  //==============================================================================
102  double lastCallbackTime = 0;
103  CriticalSection midiCallbackLock;
104  MidiBuffer incomingMessages;
105  double sampleRate = 44100.0;
106  #if JUCE_DEBUG
107  bool hasCalledReset = false;
108  #endif
109 
110  JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (MidiMessageCollector)
111 };
112 
113 } // namespace juce