2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1996--2014 Jan Nieuwenhuizen <janneke@gnu.org>
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"
21 #include "audio-item.hh"
22 #include "audio-column.hh"
23 #include "global-context.hh"
24 #include "stream-event.hh"
27 #include "translator.icc"
29 class Note_performer : public Performer
32 TRANSLATOR_DECLARATIONS (Note_performer);
35 void stop_translation_timestep ();
36 void process_music ();
38 DECLARE_TRANSLATOR_LISTENER (note);
39 DECLARE_TRANSLATOR_LISTENER (breathing);
41 vector<Stream_event *> note_evs_;
42 vector<Audio_note *> notes_;
44 vector<Audio_note *> last_notes_;
50 Note_performer::process_music ()
52 if (!note_evs_.size ())
56 SCM prop = get_property ("instrumentTransposition");
57 if (Pitch::unsmob (prop))
58 transposing = *Pitch::unsmob (prop);
60 for (vsize i = 0; i < note_evs_.size (); i++)
62 Stream_event *n = note_evs_[i];
63 SCM pit = n->get_property ("pitch");
65 if (Pitch *pitp = Pitch::unsmob (pit))
67 SCM articulations = n->get_property ("articulations");
68 Stream_event *tie_event = 0;
69 Moment len = get_event_length (n, now_mom ());
71 for (SCM s = articulations; scm_is_pair (s); s = scm_cdr (s))
73 Stream_event *ev = Stream_event::unsmob (scm_car (s));
77 if (ev->in_event_class ("tie-event"))
79 SCM f = ev->get_property ("midi-length");
80 if (ly_is_procedure (f))
81 len = robust_scm2moment (scm_call_2 (f, len.smobbed_copy (),
82 context ()->self_scm ()),
84 velocity += robust_scm2int (ev->get_property ("midi-extra-velocity"), 0);
87 Audio_note *p = new Audio_note (*pitp, len,
88 tie_event, transposing, velocity);
89 Audio_element_info info (p, n);
90 announce_element (info);
94 Grace notes shorten the previous non-grace note. If it was
95 part of a tie, shorten the first note in the tie.
97 if (now_mom ().grace_part_)
99 if (last_start_.grace_part_ == Rational (0))
101 for (vsize i = 0; i < last_notes_.size (); i++)
103 Audio_note *tie_head = last_notes_[i]->tie_head ();
104 Moment start = tie_head->audio_column_->when ();
105 //Shorten the note if it would overlap. It might
106 //not if there's a rest in between.
107 if (start + tie_head->length_mom_ > now_mom ())
108 tie_head->length_mom_ = now_mom () - start;
117 Note_performer::stop_translation_timestep ()
119 if (note_evs_.size ())
121 last_notes_ = notes_;
122 last_start_ = now_mom ();
129 IMPLEMENT_TRANSLATOR_LISTENER (Note_performer, note)
131 Note_performer::listen_note (Stream_event *ev)
133 note_evs_.push_back (ev);
136 IMPLEMENT_TRANSLATOR_LISTENER (Note_performer, breathing)
138 Note_performer::listen_breathing (Stream_event *ev)
140 //Shorten previous note if needed
141 SCM f = ev->get_property ("midi-length");
142 if (ly_is_procedure (f))
143 for (vsize i = 0; i < last_notes_.size (); i++)
145 //Pass midi-length the available time since the last note started,
146 //including any intervening rests. It returns how much is left for the
148 Moment start = last_notes_[i]->audio_column_->when ();
149 Moment available = now_mom () - start;
150 Moment len = robust_scm2moment (scm_call_2 (f, available.smobbed_copy (),
151 context ()->self_scm ()), available);
152 //Take time from the first note of the tie, since it has all the length.
153 Audio_note *tie_head = last_notes_[i]->tie_head ();
154 len += start - tie_head->audio_column_->when ();
155 if (len < tie_head->length_mom_)
156 tie_head->length_mom_ = len;
160 ADD_TRANSLATOR (Note_performer,
174 Note_performer::Note_performer ()