2 music.hh -- declare Music
4 source file of the GNU LilyPond music typesetter
6 (c) 1997--2004 Han-Wen Nienhuys <hanwen@cs.uu.nl>
12 #include "virtual-methods.hh"
13 #include "minterval.hh"
14 #include "lily-proto.hh"
17 #include "music-constructor.hh"
19 #define is_mus_type(x) internal_is_music_type (ly_symbol2scm (x))
21 /** Music is anything that has duration and supports both time compression and
24 In Lily, everything that can be thought to have a length and a pitch
25 (which has a duration which can be transposed) is considered "music",
27 Music is hierarchical:
32 TODO: make a equalp function for general music.
38 Music (Music const &m);
39 VIRTUAL_COPY_CONSTRUCTOR (Music, Music);
41 Input *origin () const;
42 void set_spot (Input);
44 SCM internal_get_property (SCM) const;
45 void internal_set_property (SCM , SCM val);
46 SCM get_property_alist (bool mut) const;
47 bool internal_is_music_type (SCM) const;
48 int duration_log () const;
50 virtual Pitch to_relative_octave (Pitch);
52 /// The duration of this piece of music
53 virtual Moment get_length () const;
54 virtual Moment start_mom () const;
56 /// Transpose, with the interval central C to #p#
57 virtual void transpose (Pitch p);
59 /// Scale the music in time by #factor#.
60 virtual void compress (Moment factor);
63 DECLARE_SMOBS (Music,);
64 SCM immutable_property_alist_;
65 SCM mutable_property_alist_;
66 friend SCM ly_extended_make_music(SCM,SCM);
69 DECLARE_TYPE_P(Music);
70 DECLARE_UNSMOB(Music,music);
72 Music* make_music_by_name (SCM sym);
73 SCM ly_deep_mus_copy (SCM);
74 SCM ly_music_scorify (SCM);