2 tie-performer.cc -- implement Tie_performer
4 source file of the GNU LilyPond music typesetter
6 (c) 1999--2003 Jan Nieuwenhuizen <janneke@gnu.org>
11 #include "audio-item.hh"
14 #include "performer.hh"
16 struct CNote_melodic_tuple {
20 CNote_melodic_tuple ();
21 CNote_melodic_tuple (Audio_note*, Music*, Moment);
22 static int pitch_compare (CNote_melodic_tuple const &, CNote_melodic_tuple const &);
23 static int time_compare (CNote_melodic_tuple const &, CNote_melodic_tuple const &);
26 inline int compare (CNote_melodic_tuple const &a, CNote_melodic_tuple const &b)
28 return CNote_melodic_tuple::time_compare (a,b);
33 Manufacture ties. Acknowledge notes, and put them into a
34 priority queue. If we have a Music, connect the notes that finish
35 just at this time, and note that start at this time.
37 TODO: should share code with Tie_engraver ?
39 class Tie_performer : public Performer
42 TRANSLATOR_DECLARATIONS(Tie_performer);
46 Array<CNote_melodic_tuple> now_notes_;
47 Array<CNote_melodic_tuple> tied_notes_;
52 Link_array<Audio_tie> ties_;
55 virtual void start_translation_timestep ();
56 virtual void stop_translation_timestep ();
57 virtual void acknowledge_audio_element (Audio_element_info);
58 virtual bool try_music (Music*);
59 virtual void create_audio_elements ();
63 Tie_performer::Tie_performer ()
66 ties_created_ = false;
70 ENTER_DESCRIPTION (Tie_performer, "", "",
77 Tie_performer::try_music (Music *m)
88 Tie_performer::acknowledge_audio_element (Audio_element_info i)
90 if (Audio_note *nh = dynamic_cast<Audio_note *> (i.elem_))
93 if (m->is_mus_type ("note-event"))
94 now_notes_.push (CNote_melodic_tuple (nh, m, now_mom ()+ m->get_length ()));
99 Tie_performer::create_audio_elements ()
102 This is a nested loop. Not optimal, but good enough.
104 if (tied_notes_.size ())
106 Moment now = now_mom();
107 for (int i = tied_notes_.size (); i--; )
109 if (tied_notes_[i].end_ != now)
112 for (int j = now_notes_.size(); j--;)
115 = Pitch::compare (*unsmob_pitch (tied_notes_[i].event_->get_mus_property ("pitch")),
116 *unsmob_pitch (now_notes_[j].event_->get_mus_property ("pitch")));
121 Audio_tie * p = new Audio_tie;
122 p->set_note (LEFT, tied_notes_[i].note_);
123 p->set_note (RIGHT, now_notes_[j].note_);
125 announce_element (Audio_element_info (p, event_));
126 ties_created_ = true;
138 Tie_performer::stop_translation_timestep ()
140 if (prev_event_ && tied_notes_.size () && !ties_.size ()
141 && now_notes_.size ())
143 prev_event_->origin ()->warning (_ ("No ties were performed."));
154 tied_notes_ = now_notes_ ;
155 prev_event_ = event_;
159 now_notes_ .clear ();
161 for (int i=ties_.size (); i--;)
163 ties_[i]->note_drul_[RIGHT]->tie_to (ties_[i]->note_drul_[LEFT]);
170 Tie_performer::start_translation_timestep ()
173 ties_created_ = false;
174 Moment now = now_mom ();
175 for (int i= tied_notes_.size (); i-- ;)
177 if (tied_notes_[i].end_ < now)
185 CNote_melodic_tuple::CNote_melodic_tuple ()
192 CNote_melodic_tuple::CNote_melodic_tuple (Audio_note *h, Music*m, Moment mom)
200 CNote_melodic_tuple::pitch_compare (CNote_melodic_tuple const&h1,
201 CNote_melodic_tuple const &h2)
203 SCM p1 = h1.event_->get_mus_property ("pitch");
204 SCM p2 = h2.event_->get_mus_property ("pitch");
205 return Pitch::compare (*unsmob_pitch (p1),
210 CNote_melodic_tuple::time_compare (CNote_melodic_tuple const&h1,
211 CNote_melodic_tuple const &h2)
213 return (h1.end_ - h2.end_).main_part_.sign ();