2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 1996--2015 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 void listen_note (Stream_event *);
39 void listen_breathing (Stream_event *);
40 void listen_tie (Stream_event *);
41 void listen_articulation (Stream_event *);
43 vector<Stream_event *> note_evs_, script_evs_;
44 vector<Audio_note *> notes_;
46 vector<Audio_note *> last_notes_;
51 Note_performer::process_music ()
53 if (!note_evs_.size ())
57 SCM prop = get_property ("instrumentTransposition");
58 if (unsmob<Pitch> (prop))
59 transposing = *unsmob<Pitch> (prop);
61 for (vsize i = 0; i < note_evs_.size (); i++)
63 Stream_event *n = note_evs_[i];
64 SCM pit = n->get_property ("pitch");
66 if (Pitch *pitp = unsmob<Pitch> (pit))
68 SCM articulations = n->get_property ("articulations");
69 Stream_event *tie_event = 0;
70 Moment len = get_event_length (n, now_mom ());
73 for (vsize j = script_evs_.size (); j--;)
74 articulations = scm_cons (script_evs_[j]->self_scm (), articulations);
76 for (SCM s = articulations; scm_is_pair (s); s = scm_cdr (s))
78 Stream_event *ev = unsmob<Stream_event> (scm_car (s));
82 if (ev->in_event_class ("tie-event"))
84 SCM f = ev->get_property ("midi-length");
85 if (ly_is_procedure (f))
86 len = robust_scm2moment (scm_call_2 (f, len.smobbed_copy (),
87 context ()->self_scm ()),
89 velocity += robust_scm2int (ev->get_property ("midi-extra-velocity"), 0);
92 Audio_note *p = new Audio_note (*pitp, len,
93 tie_event, transposing, velocity);
94 Audio_element_info info (p, n);
95 announce_element (info);
99 Grace notes shorten the previous non-grace note. If it was
100 part of a tie, shorten the first note in the tie.
102 if (now_mom ().grace_part_)
104 if (last_start_.grace_part_ == Rational (0))
106 for (vsize i = 0; i < last_notes_.size (); i++)
108 Audio_note *tie_head = last_notes_[i]->tie_head ();
109 Moment start = tie_head->audio_column_->when ();
110 //Shorten the note if it would overlap. It might
111 //not if there's a rest in between.
112 if (start + tie_head->length_mom_ > now_mom ())
113 tie_head->length_mom_ = now_mom () - start;
122 Note_performer::stop_translation_timestep ()
124 if (note_evs_.size ())
126 last_notes_ = notes_;
127 last_start_ = now_mom ();
132 script_evs_.clear ();
136 Note_performer::listen_note (Stream_event *ev)
138 note_evs_.push_back (ev);
142 Note_performer::listen_tie (Stream_event *ev)
144 script_evs_.push_back (ev);
148 Note_performer::listen_articulation (Stream_event *ev)
150 script_evs_.push_back (ev);
154 Note_performer::listen_breathing (Stream_event *ev)
156 //Shorten previous note if needed
157 SCM f = ev->get_property ("midi-length");
158 if (ly_is_procedure (f))
159 for (vsize i = 0; i < last_notes_.size (); i++)
161 //Pass midi-length the available time since the last note started,
162 //including any intervening rests. It returns how much is left for the
164 Moment start = last_notes_[i]->audio_column_->when ();
165 Moment available = now_mom () - start;
166 Moment len = robust_scm2moment (scm_call_2 (f, available.smobbed_copy (),
167 context ()->self_scm ()), available);
168 //Take time from the first note of the tie, since it has all the length.
169 Audio_note *tie_head = last_notes_[i]->tie_head ();
170 len += start - tie_head->audio_column_->when ();
171 if (len < tie_head->length_mom_)
172 tie_head->length_mom_ = len;
177 Note_performer::boot ()
179 ADD_LISTENER (Note_performer, note);
180 ADD_LISTENER (Note_performer, breathing);
181 ADD_LISTENER (Note_performer, tie);
182 ADD_LISTENER (Note_performer, articulation);
185 ADD_TRANSLATOR (Note_performer,
199 Note_performer::Note_performer (Context *c)