libpromeki 1.0.0-alpha
PROfessional MEdia toolKIt
 
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notesequenceparser.h
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1
8#pragma once
9
10
11#include <promeki/config.h>
12#if PROMEKI_ENABLE_MUSIC
13#include <promeki/string.h>
14#include <promeki/map.h>
15#include <promeki/stringlist.h>
16#include <promeki/musicalnote.h>
17#include <promeki/musicalscale.h>
18
19PROMEKI_NAMESPACE_BEGIN
20
45class NoteSequenceParser {
46 public:
52 MusicalNote::List parse(const String &input);
53
58 const StringList &errors() const { return _errors; }
59
60 private:
61 struct Params {
62 double tempo = 100.0;
63 double noteLength = 0.25;
64 float amplitude = 0.5f;
65 int octave = 4;
66 MusicalScale scale;
67 float legato = 0.5f;
68 float vibrato = 0.0f;
69 float vibratoRate = 5.0f;
70 float tremolo = 0.0f;
71 float tremoloRate = 5.0f;
72 };
73
74 String _input;
75 size_t _pos = 0;
76 double _currentTime = 0.0;
77 Params _params;
78 List<Params> _paramStack;
79 Map<String, Params> _namedParams;
80 MusicalNote::List _notes;
81 StringList _errors;
82
83 void parseToken();
84 void parseTempo();
85 void parseNoteLengthParam();
86 void parseAmplitude();
87 void parseOctave();
88 void parseScaleParam();
89 void parseLegato();
90 void parseVibrato();
91 void parseTremolo();
92 void parseLetterNote();
93 void parseNumericNote();
94 void parseRest();
95 void parseBarRest();
96 void parseSaveParams();
97 void parseRecallParams();
98 void pushParams();
99 void popParams();
100 void skipComment();
101 void skipWhitespace();
102
103 char current() const;
104 char peek(int offset) const;
105 bool atEnd() const;
106 String readParenArg();
107 double parseDurationModifier();
108 void emitNote(float midiNote, int dots, double lengthMod);
109 void emitRest(int dots, double lengthMod);
110 void addError(const String &msg);
111
112 static double parseNoteLengthValue(const String &s);
113 static double applyDots(double length, int dots);
114};
115
116PROMEKI_NAMESPACE_END
117
118#endif // PROMEKI_ENABLE_MUSIC