OpenShot Audio Library | OpenShotAudio  0.3.0
juce_MPEUtils.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 //==============================================================================
38 {
39 public:
45 
50  MPEChannelAssigner (Range<int> channelRange = Range<int> (1, 17));
51 
64  int findMidiChannelForNewNote (int noteNumber) noexcept;
65 
72  void noteOff (int noteNumber, int midiChannel = -1);
73 
75  void allNotesOff();
76 
77 private:
78  bool isLegacy = false;
79  std::unique_ptr<MPEZoneLayout::Zone> zone;
80  int channelIncrement, numChannels, firstChannel, lastChannel, midiChannelLastAssigned;
81 
82  //==============================================================================
83  struct MidiChannel
84  {
85  Array<int> notes;
86  int lastNotePlayed = -1;
87  bool isFree() const noexcept { return notes.isEmpty(); }
88  };
89  MidiChannel midiChannels[17];
90 
91  //==============================================================================
92  int findMidiChannelPlayingClosestNonequalNote (int noteNumber) noexcept;
93 };
94 
95 //==============================================================================
103 {
104 public:
106  static const uint32 notMPE = 0;
107 
110 
111  //==============================================================================
121  void remapMidiChannelIfNeeded (MidiMessage& message, uint32 mpeSourceID) noexcept;
122 
123  //==============================================================================
125  void reset() noexcept;
126 
128  void clearChannel (int channel) noexcept;
129 
131  void clearSource (uint32 mpeSourceID);
132 
133 private:
134  MPEZoneLayout::Zone zone;
135 
136  int channelIncrement;
137  int firstChannel, lastChannel;
138 
139  uint32 sourceAndChannel[17];
140  uint32 lastUsed[17];
141  uint32 counter = 0;
142 
143  //==============================================================================
144  bool applyRemapIfExisting (int channel, uint32 sourceAndChannelID, MidiMessage& m) noexcept;
145  int getBestChanToReuse() const noexcept;
146 
147  void zeroArrays();
148 
149  //==============================================================================
150  bool messageIsNoteData (const MidiMessage& m) { return (*m.getRawData() & 0xf0) != 0xf0; }
151 };
152 
153 } // namespace juce
void noteOff(int noteNumber, int midiChannel=-1)
MPEChannelAssigner(MPEZoneLayout::Zone zoneToUse)
bool isEmpty() const noexcept
Definition: juce_Array.h:222
int findMidiChannelForNewNote(int noteNumber) noexcept