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 "score-performer.hh"
22 #include "audio-column.hh"
23 #include "audio-item.hh"
24 #include "context-def.hh"
25 #include "dispatcher.hh"
26 #include "global-context.hh"
27 #include "performance.hh"
28 #include "midi-stream.hh"
29 #include "output-def.hh"
30 #include "string-convert.hh"
32 #include "audio-staff.hh"
34 ADD_TRANSLATOR_GROUP (Score_performer,
48 Score_performer::Score_performer ()
55 Score_performer::~Score_performer ()
60 Score_performer::announce_element (Audio_element_info info)
62 announce_infos_.push_back (info);
63 if (Audio_staff *s = dynamic_cast<Audio_staff *> (info.elem_))
65 performance_->audio_staffs_.push_back (s);
68 performance_->add_element (info.elem_);
72 Score_performer::acknowledge_audio_elements ()
74 for (vsize i = 0; i < announce_infos_.size (); i++)
76 if (Audio_item *ai = dynamic_cast<Audio_item *> (announce_infos_[i].elem_))
77 audio_column_->add_audio_item (ai);
79 Performer_group::acknowledge_audio_elements ();
83 Score_performer::connect_to_context (Context *c)
85 Performer_group::connect_to_context (c);
87 Dispatcher *d = c->get_global_context ()->event_source ();
88 d->add_listener (GET_LISTENER (Score_performer, one_time_step), ly_symbol2scm ("OneTimeStep"));
89 d->add_listener (GET_LISTENER (Score_performer, prepare), ly_symbol2scm ("Prepare"));
90 d->add_listener (GET_LISTENER (Score_performer, finish), ly_symbol2scm ("Finish"));
94 Score_performer::disconnect_from_context ()
96 Dispatcher *d = context ()->get_global_context ()->event_source ();
97 d->remove_listener (GET_LISTENER (Score_performer, one_time_step), ly_symbol2scm ("OneTimeStep"));
98 d->remove_listener (GET_LISTENER (Score_performer, prepare), ly_symbol2scm ("Prepare"));
99 d->remove_listener (GET_LISTENER (Score_performer, finish), ly_symbol2scm ("Finish"));
101 Performer_group::disconnect_from_context ();
105 Score_performer::prepare (SCM sev)
107 Stream_event *ev = unsmob<Stream_event> (sev);
108 SCM sm = ev->get_property ("moment");
109 Moment *m = unsmob<Moment> (sm);
110 audio_column_ = new Audio_column (*m);
111 announce_element (Audio_element_info (audio_column_, 0));
112 precomputed_recurse_over_translators (context (), START_TRANSLATION_TIMESTEP, UP);
116 Score_performer::finish (SCM)
118 SCM channel_mapping = context ()->get_property ("midiChannelMapping");
119 bool use_ports = scm_is_eq (channel_mapping, ly_symbol2scm ("voice"));
120 performance_->ports_ = use_ports;
121 recurse_over_translators
123 Callback0_wrapper::make_smob<Translator, &Translator::finalize> (),
124 Callback0_wrapper::make_smob<Translator_group, &Translator_group::finalize> (),
129 Score_performer::one_time_step (SCM)
131 // audio_column_ can be 0 when prepare has not been called. The
132 // condition is triggered when Simple_music_iterator implicitly
133 // creates a Score context, like when writing
135 // \score { { | c4 c c c } \midi { } }
137 // The same situation happens with the Score_engraver group, but it
138 // would appear not to suffer any bad side effects.
141 audio_column_ = new Audio_column (context ()->now_mom ());
142 if (to_boolean (context ()->get_property ("skipTypesetting")))
146 skip_start_mom_ = audio_column_->when ();
154 offset_mom_ -= audio_column_->when () - skip_start_mom_;
158 audio_column_->offset_when (offset_mom_);
159 precomputed_recurse_over_translators (context (), PROCESS_MUSIC, UP);
163 precomputed_recurse_over_translators (context (), STOP_TRANSLATION_TIMESTEP, UP);
167 Score_performer::derived_mark () const
170 scm_gc_mark (performance_->self_scm ());
172 Performer_group::derived_mark ();
176 Score_performer::initialize ()
178 performance_ = new Performance;
179 performance_->unprotect ();
180 context ()->set_property ("output", performance_->self_scm ());
181 performance_->midi_ = context ()->get_output_def ();
183 Translator_group::initialize ();