2 This file is part of LilyPond, the GNU music typesetter.
4 Copyright (C) 2000--2011 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 "stream-event.hh"
24 #include "translator.icc"
26 class Dynamic_performer : public Performer
29 TRANSLATOR_DECLARATIONS (Dynamic_performer);
31 void stop_translation_timestep ();
32 void process_music ();
33 Real equalize_volume (Real);
35 DECLARE_TRANSLATOR_LISTENER (decrescendo);
36 DECLARE_TRANSLATOR_LISTENER (crescendo);
37 DECLARE_TRANSLATOR_LISTENER (absolute_dynamic);
39 Stream_event *script_event_;
40 Drul_array<Stream_event *> span_events_;
41 Drul_array<Direction> grow_dir_;
43 Audio_dynamic *absolute_;
44 Audio_span_dynamic *span_dynamic_;
45 Audio_span_dynamic *finished_span_dynamic_;
48 Dynamic_performer::Dynamic_performer ()
54 = span_events_[RIGHT] = 0;
56 finished_span_dynamic_ = 0;
60 Dynamic_performer::equalize_volume (Real volume)
63 properties override default equaliser setting
65 SCM min = get_property ("midiMinimumVolume");
66 SCM max = get_property ("midiMaximumVolume");
67 if (scm_is_number (min) || scm_is_number (max))
70 if (scm_is_number (min))
71 iv[MIN] = scm_to_double (min);
72 if (scm_is_number (max))
73 iv[MAX] = scm_to_double (max);
74 volume = iv[MIN] + iv.length () * volume;
79 urg, code duplication:: staff_performer
81 SCM s = get_property ("midiInstrument");
83 if (!scm_is_string (s))
84 s = get_property ("instrumentName");
86 if (!scm_is_string (s))
87 s = scm_from_locale_string ("piano");
89 SCM eq = get_property ("instrumentEqualizer");
90 if (ly_is_procedure (eq))
91 s = scm_call_1 (eq, s);
93 if (is_number_pair (s))
95 Interval iv = ly_scm2interval (s);
96 volume = iv[MIN] + iv.length () * volume;
103 Dynamic_performer::process_music ()
105 if (span_events_[STOP] || script_event_)
107 finished_span_dynamic_ = span_dynamic_;
111 if (span_events_[START])
113 span_dynamic_ = new Audio_span_dynamic ();
114 announce_element (Audio_element_info (span_dynamic_, span_events_[START]));
116 span_dynamic_->grow_dir_ = grow_dir_[START];
121 || finished_span_dynamic_)
123 absolute_ = new Audio_dynamic ();
127 SCM proc = get_property ("dynamicAbsoluteVolumeFunction");
129 SCM svolume = SCM_EOL;
130 if (ly_is_procedure (proc))
133 svolume = scm_call_1 (proc, script_event_->get_property ("text"));
136 Real volume = robust_scm2double (svolume, 0.5);
139 = absolute_->volume_ = equalize_volume (volume);
142 Audio_element_info info (absolute_, script_event_);
143 announce_element (info);
147 span_dynamic_->add_absolute (absolute_);
149 if (finished_span_dynamic_)
150 finished_span_dynamic_->add_absolute (absolute_);
154 Dynamic_performer::stop_translation_timestep ()
156 if (finished_span_dynamic_)
158 finished_span_dynamic_->render ();
159 finished_span_dynamic_ = 0;
162 if (absolute_ && absolute_->volume_ < 0)
164 absolute_->volume_ = last_volume_;
168 last_volume_ = absolute_->volume_;
174 = span_events_[RIGHT] = 0;
177 IMPLEMENT_TRANSLATOR_LISTENER (Dynamic_performer, decrescendo);
179 Dynamic_performer::listen_decrescendo (Stream_event *r)
181 Direction d = to_dir (r->get_property ("span-direction"));
183 grow_dir_[d] = SMALLER;
186 IMPLEMENT_TRANSLATOR_LISTENER (Dynamic_performer, crescendo);
188 Dynamic_performer::listen_crescendo (Stream_event *r)
190 Direction d = to_dir (r->get_property ("span-direction"));
192 grow_dir_[d] = BIGGER;
195 IMPLEMENT_TRANSLATOR_LISTENER (Dynamic_performer, absolute_dynamic);
197 Dynamic_performer::listen_absolute_dynamic (Stream_event *r)
203 ADD_TRANSLATOR (Dynamic_performer,
211 "dynamicAbsoluteVolumeFunction "
212 "instrumentEqualizer "