Use scalar instead of embedded_scm for context mod overrides.
[lilypond/mpolesky.git] / lily / drum-note-performer.cc
blobee445f5ad89aac3d14db3c510a1e47e2e8adc206
1 /*
2 note-performer.cc -- implement Drum_note_performer
4 source file of the GNU LilyPond music typesetter
6 (c) 1996--2009 Jan Nieuwenhuizen <janneke@gnu.org>
7 */
9 #include "performer.hh"
10 #include "audio-item.hh"
11 #include "audio-column.hh"
12 #include "global-context.hh"
13 #include "stream-event.hh"
14 #include "translator.icc"
15 #include "warn.hh"
17 class Drum_note_performer : public Performer
19 public:
20 TRANSLATOR_DECLARATIONS (Drum_note_performer);
22 protected:
23 void stop_translation_timestep ();
24 void process_music ();
25 DECLARE_TRANSLATOR_LISTENER (note);
26 private:
27 vector<Stream_event*> note_evs_;
28 vector<Audio_note*> notes_;
31 Drum_note_performer::Drum_note_performer ()
35 void
36 Drum_note_performer::process_music ()
38 SCM tab = get_property ("drumPitchTable");
40 while (note_evs_.size ())
42 Stream_event *n = note_evs_.back ();
43 note_evs_.pop_back ();
44 SCM sym = n->get_property ("drum-type");
45 SCM defn = SCM_EOL;
47 if (scm_is_symbol (sym)
48 && (scm_hash_table_p (tab) == SCM_BOOL_T))
49 defn = scm_hashq_ref (tab, sym, SCM_EOL);
51 if (Pitch *pit = unsmob_pitch (defn))
53 SCM articulations = n->get_property ("articulations");
54 Stream_event *tie_event = 0;
55 for (SCM s = articulations;
56 !tie_event && scm_is_pair (s);
57 s = scm_cdr (s))
59 Stream_event *ev = unsmob_stream_event (scm_car (s));
60 if (!ev)
61 continue;
63 if (ev->in_event_class ("tie-event"))
64 tie_event = ev;
67 Moment len = get_event_length (n, now_mom ());
69 Audio_note *p = new Audio_note (*pit, len,
70 tie_event, Pitch (0, 0, 0));
71 Audio_element_info info (p, n);
72 announce_element (info);
73 notes_.push_back (p);
77 note_evs_.clear ();
80 void
81 Drum_note_performer::stop_translation_timestep ()
83 notes_.clear ();
84 note_evs_.clear ();
87 IMPLEMENT_TRANSLATOR_LISTENER (Drum_note_performer, note);
88 void
89 Drum_note_performer::listen_note (Stream_event *ev)
91 note_evs_.push_back (ev);
94 ADD_TRANSLATOR (Drum_note_performer,
95 /* doc */
96 "Play drum notes.",
98 /* create */
99 "",
101 /* read */
104 /* write */