1 /*
2  * Copyright (C) 2018-2020 Rerrah
3  *
4  * Permission is hereby granted, free of charge, to any person
5  * obtaining a copy of this software and associated documentation
6  * files (the "Software"), to deal in the Software without
7  * restriction, including without limitation the rights to use,
8  * copy, modify, merge, publish, distribute, sublicense, and/or sell
9  * copies of the Software, and to permit persons to whom the
10  * Software is furnished to do so, subject to the following
11  * conditions:
12  *
13  * The above copyright notice and this permission notice shall be
14  * included in all copies or substantial portions of the Software.
15  *
16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
18  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
20  * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23  * OTHER DEALINGS IN THE SOFTWARE.
24  */
25 
26 #pragma once
27 
28 #include <vector>
29 #include <deque>
30 #include <unordered_map>
31 #include "enum_hash.hpp"
32 #include "misc.hpp"
33 
34 
35 struct JamKeyData;
36 enum class JamKey;
37 
38 
39 class JamManager
40 {
41 public:
42 	JamManager();
43 	bool toggleJamMode();
44 	bool isJamMode() const;
45 	void polyphonic(bool flag);
46 	std::vector<JamKeyData> keyOn(JamKey key, int channel, SoundSource source, int keyNum);
47 	JamKeyData keyOff(JamKey key, int keyNum);
48 
49 	static Note jamKeyToNote(JamKey& key);
50 	static JamKey noteToJamKey(Note& note);
51 	static int calcOctave(int baseOctave, JamKey& key);
52 
53 	void clear();
54 
55 private:
56 	bool isJamMode_;
57 	bool isPoly_;
58 	std::vector<JamKeyData> keyOnTable_;
59 	std::unordered_map<SoundSource, std::deque<int>> unusedCh_;
60 };
61 
62 
63 struct JamKeyData
64 {
65 	JamKey key;
66 	int channelInSource;
67 	SoundSource source;
68 	int keyNum;
69 };
70 
71 
72 enum class JamKey
73 {
74 	LowC, LowCS, LowD, LowDS, LowE, LowF, LowFS, LowG,
75 	LowGS, LowA, LowAS, LowB, LowC2, LowCS2, LowD2,
76 	HighC, HighCS, HighD, HighDS, HighE, HighF, HighFS, HighG,
77 	HighGS, HighA, HighAS, HighB, HighC2, HighCS2, HighD2, MidiKey
78 };
79