2 note-performer.cc -- implement Drum_note_performer
4 source file of the GNU LilyPond music typesetter
6 (c) 1996--2006 Jan Nieuwenhuizen <janneke@gnu.org>
9 #include "performer.hh"
10 #include "audio-item.hh"
11 #include "audio-column.hh"
12 #include "global-context.hh"
14 #include "stream-event.hh"
15 #include "translator.icc"
18 class Drum_note_performer : public Performer
21 TRANSLATOR_DECLARATIONS (Drum_note_performer);
24 void stop_translation_timestep ();
25 void process_music ();
26 DECLARE_TRANSLATOR_LISTENER (note);
28 vector<Stream_event*> note_evs_;
29 vector<Audio_note*> notes_;
32 Drum_note_performer::Drum_note_performer ()
37 Drum_note_performer::process_music ()
39 SCM tab = get_property ("drumPitchTable");
41 while (note_evs_.size ())
43 Stream_event *n = note_evs_.back ();
44 note_evs_.pop_back ();
45 SCM sym = n->get_property ("drum-type");
48 if (scm_is_symbol (sym)
49 && (scm_hash_table_p (tab) == SCM_BOOL_T))
50 defn = scm_hashq_ref (tab, sym, SCM_EOL);
52 if (Pitch *pit = unsmob_pitch (defn))
54 SCM articulations = n->get_property ("articulations");
55 Stream_event *tie_event = 0;
56 for (SCM s = articulations;
57 !tie_event && scm_is_pair (s);
60 Stream_event *ev = unsmob_stream_event (scm_car (s));
64 if (ev->in_event_class ("tie-event"))
68 Audio_note *p = new Audio_note (*pit, get_event_length (n),
70 Audio_element_info info (p, n);
71 announce_element (info);
80 Drum_note_performer::stop_translation_timestep ()
86 IMPLEMENT_TRANSLATOR_LISTENER (Drum_note_performer, note);
88 Drum_note_performer::listen_note (Stream_event *ev)
90 note_evs_.push_back (ev);
93 ADD_TRANSLATOR (Drum_note_performer,
94 "Play drum notes.", "", "", "");