2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1998--2015 Han-Wen Nienhuys <hanwen@xs4all.nl>
6 LilyPond is free software: you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation, either version 3 of the License, or
9 (at your option) any later version.
11 LilyPond is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
20 #include "performer.hh"
22 #include "audio-item.hh"
24 #include "stream-event.hh"
25 #include "translator.icc"
28 struct Head_audio_event_tuple
30 Audio_element_info head_;
31 // The end moment of the note, so we can calculate a skip and check whether
32 // the note still goes on
34 Head_audio_event_tuple () {}
35 Head_audio_event_tuple (Audio_element_info h, Moment m)
42 class Tie_performer : public Performer
45 list<Head_audio_event_tuple> now_heads_;
46 list<Head_audio_event_tuple> now_tied_heads_; // new tied notes
47 list<Head_audio_event_tuple> heads_to_tie_; // heads waiting for closing tie
50 void stop_translation_timestep ();
51 void start_translation_timestep ();
52 virtual void acknowledge_audio_element (Audio_element_info);
53 void process_music ();
54 void listen_tie (Stream_event *);
56 TRANSLATOR_DECLARATIONS (Tie_performer);
59 Tie_performer::Tie_performer ()
65 Tie_performer::listen_tie (Stream_event *ev)
71 Tie_performer::process_music ()
74 context ()->set_property ("tieMelismaBusy", SCM_BOOL_T);
78 Tie_performer::acknowledge_audio_element (Audio_element_info inf)
80 if (Audio_note *an = dynamic_cast<Audio_note *> (inf.elem_))
82 // for each tied note, store the info and its end moment, so we can
83 // later on check whether (1) the note is still ongoing and (2) how
84 // long the skip is with tieWaitForNote
85 Head_audio_event_tuple inf_mom (inf, now_mom () + an->length_mom_);
87 now_tied_heads_.push_back (inf_mom);
89 now_heads_.push_back (inf_mom);
91 // Find a previous note that ties to the current note. If it exists,
92 // remove it from the heads_to_tie vector and create the tie
93 list<Head_audio_event_tuple>::iterator it;
95 Stream_event *right_mus = inf.event_;
96 for (it = heads_to_tie_.begin ();
97 !found && (it != heads_to_tie_.end ());
100 Audio_element_info et = (*it).head_;
101 Audio_note *th = dynamic_cast<Audio_note *> (et.elem_);
102 Stream_event *left_mus = et.event_;
104 if (th && right_mus && left_mus
105 && ly_is_equal (right_mus->get_property ("pitch"),
106 left_mus->get_property ("pitch")))
109 // (*it).moment_ already stores the end of the tied note!
110 Moment skip = now_mom () - (*it).end_moment_;
111 an->tie_to (th, skip);
112 it = heads_to_tie_.erase (it);
117 for (it = heads_to_tie_.begin ();
118 !found && (it != heads_to_tie_.end ());
121 Audio_element_info et = (*it).head_;
122 Audio_note *th = dynamic_cast<Audio_note *> (et.elem_);
123 Stream_event *left_mus = et.event_;
125 if (!(th && right_mus && left_mus))
128 SCM p1 = left_mus->get_property ("pitch");
129 SCM p2 = right_mus->get_property ("pitch");
130 if (unsmob<Pitch> (p1) && unsmob<Pitch> (p2)
131 && unsmob<Pitch> (p1)->tone_pitch () == unsmob<Pitch> (p2)->tone_pitch ())
134 // (*it).moment_ already stores the end of the tied note!
135 Moment skip = now_mom () - (*it).end_moment_;
136 an->tie_to (th, skip);
137 it = heads_to_tie_.erase (it);
144 Tie_performer::start_translation_timestep ()
146 context ()->set_property ("tieMelismaBusy",
147 ly_bool2scm (heads_to_tie_.size ()));
150 // a predicate implemented as a class, used to delete all tied notes with end
151 // moment in the past:
152 class end_moment_passed
157 end_moment_passed (Moment mom) : now (mom) {}
158 bool operator () (const Head_audio_event_tuple &value)
160 return (value.end_moment_ <= now);
165 Tie_performer::stop_translation_timestep ()
167 // We might have dangling open ties like c~ d. Close them, unless the first
168 // note is still ongoing or we have we have tieWaitForNote set...
169 if (!to_boolean (get_property ("tieWaitForNote")))
171 heads_to_tie_.remove_if (end_moment_passed (now_mom ()));
174 // Append now_heads_ and now_tied_heads to heads_to_tie_ for the next time step
177 heads_to_tie_.splice (heads_to_tie_.end (), now_heads_);
179 heads_to_tie_.splice (heads_to_tie_.end (), now_tied_heads_);
183 now_tied_heads_.clear ();
187 Tie_performer::boot ()
189 ADD_LISTENER (Tie_performer, tie);
192 ADD_TRANSLATOR (Tie_performer,
194 "Generate ties between note heads of equal pitch.",