2 note-performer.cc -- implement Drum_note_performer
4 source file of the GNU LilyPond music typesetter
6 (c) 1996--2004 Jan Nieuwenhuizen <janneke@gnu.org>
9 #include "performer.hh"
11 #include "audio-item.hh"
12 #include "audio-column.hh"
13 #include "global-translator.hh"
16 class Drum_note_performer : public Performer {
18 TRANSLATOR_DECLARATIONS(Drum_note_performer);
21 virtual bool try_music (Music *ev) ;
22 virtual void stop_translation_timestep ();
23 virtual void create_audio_elements ();
25 Global_translator* get_global_translator ();
27 Link_array<Music> note_evs_;
28 Link_array<Audio_note> notes_;
29 Link_array<Audio_note> delayeds_;
33 Drum_note_performer::create_audio_elements ()
36 if (!tab) tab = get_property ("drumPitchTable");
38 while (note_evs_.size ())
40 Music* n = note_evs_.pop ();
41 SCM sym = n->get_mus_property ("drum-type");
45 && (scm_hash_table_p (tab) == SCM_BOOL_T))
46 defn = scm_hashq_ref (tab, sym, SCM_EOL);
48 if (Pitch * pit = unsmob_pitch (defn))
50 Audio_note* p = new Audio_note (*pit, n->get_length (), 0);
51 Audio_element_info info (p, n);
52 announce_element (info);
61 Drum_note_performer::get_global_translator ()
64 Global_translator *global =0;
68 global = dynamic_cast<Global_translator*> (t);
77 Drum_note_performer::stop_translation_timestep ()
79 // why don't grace notes show up here?
80 // --> grace notes effectively do not get delayed
81 Global_translator* global = get_global_translator ();
82 for (int i=0; i < notes_.size (); i++)
84 Audio_note* n = notes_[i];
85 Moment m= n->delayed_until_mom_;
88 global->add_moment_to_process (m);
96 Moment now = now_mom ();
97 for (int i=0; i < notes_.size (); i++)
99 play_element (notes_[i]);
103 for (int i=0; i < delayeds_.size (); i++)
105 Audio_note* n = delayeds_[i];
106 if (n->delayed_until_mom_ <= now)
117 Drum_note_performer::try_music (Music* ev)
119 if (ev->is_mus_type ("note-event"))
124 else if (ev->is_mus_type ("busy-playing-event"))
125 return note_evs_.size ();
130 ENTER_DESCRIPTION(Drum_note_performer,
131 "Play drum notes.","",
132 "note-event busy-playing-event","","","");
134 Drum_note_performer::Drum_note_performer()