2 score-performer.cc -- implement Score_performer
4 source file of the GNU LilyPond music typesetter
6 (c) 1996--2006 Jan Nieuwenhuizen <janneke@gnu.org>
10 #include "score-performer.hh"
12 #include "audio-column.hh"
13 #include "audio-item.hh"
14 #include "performance.hh"
15 #include "midi-stream.hh"
16 #include "string-convert.hh"
18 #include "context-def.hh"
19 #include "output-def.hh"
22 ADD_TRANSLATOR_GROUP (Score_performer,
29 Score_performer::Score_performer ()
35 Score_performer::~Score_performer ()
40 Score_performer::play_element (Audio_element *p)
42 if (Audio_item *i = dynamic_cast<Audio_item *> (p))
43 audio_column_->add_audio_item (i);
44 performance_->add_element (p);
48 Score_performer::announce_element (Audio_element_info info)
50 announce_infos_.push_back (info);
54 Score_performer::prepare (Moment m)
56 audio_column_ = new Audio_column (m);
57 play_element (audio_column_);
58 precomputed_recurse_over_translators (context (), START_TRANSLATION_TIMESTEP, UP);
62 Score_performer::finish ()
64 recurse_over_translators (context (),
65 &Translator::finalize,
66 &Translator_group::finalize,
71 Score_performer::one_time_step ()
73 if (to_boolean (context ()->get_property ("skipTypesetting")))
77 skip_start_mom_ = audio_column_->at_mom ();
85 offset_mom_ -= audio_column_->at_mom () - skip_start_mom_;
89 audio_column_->offset_at_mom (offset_mom_);
90 precomputed_recurse_over_translators (context (), PROCESS_MUSIC, UP);
94 precomputed_recurse_over_translators (context (), STOP_TRANSLATION_TIMESTEP, UP);
98 Score_performer::get_tempo () const
100 return ::get_tempo (performance_->midi_, Moment (Rational (1, 4)));
104 Score_performer::get_output ()
106 Music_output *o = performance_;
108 return o->self_scm ();
112 Score_performer::derived_mark () const
115 scm_gc_mark (performance_->self_scm ());
117 Score_translator::derived_mark ();
118 Performer_group::derived_mark ();
122 Score_performer::initialize ()
124 performance_ = new Performance;
125 performance_->unprotect ();
126 performance_->midi_ = context ()->get_output_def ();
128 Translator_group::initialize ();