2 performer-group-performer.cc -- implement Performer_group
4 source file of the GNU LilyPond music typesetter
6 (c) 1996--2006 Han-Wen Nienhuys <hanwen@xs4all.nl>
7 Jan Nieuwenhuizen <janneke@gnu.org>
10 #include "performer-group.hh"
13 #include "audio-element.hh"
16 ADD_TRANSLATOR_GROUP (Performer_group,
24 Performer_group::announce_element (Audio_element_info info)
26 announce_infos_.push_back (info);
28 = context ()->get_parent_context ()->implementation ();
30 if (Performer_group *eg = dynamic_cast<Performer_group *> (t))
31 eg->announce_element (info);
35 Performer_group::acknowledge_audio_elements ()
37 for (vsize j = 0; j < announce_infos_.size (); j++)
39 Audio_element_info info = announce_infos_[j];
41 for (SCM p = get_simple_trans_list (); scm_is_pair (p); p = scm_cdr (p))
43 Translator *t = unsmob_translator (scm_car (p));
44 Performer *eng = dynamic_cast<Performer *> (t);
45 if (eng && eng != info.origin_trans_)
46 eng->acknowledge_audio_element (info);
52 performer_each (SCM list, Performer_method method)
54 for (SCM p = list; scm_is_pair (p); p = scm_cdr (p))
56 Performer *e = dynamic_cast<Performer *> (unsmob_translator (scm_car (p)));
63 Performer_group::do_announces ()
65 for (SCM s = context ()->children_contexts ();
66 scm_is_pair (s); s = scm_cdr (s))
68 Context *c = unsmob_context (scm_car (s));
69 Performer_group *group
70 = dynamic_cast<Performer_group *> (c->implementation ());
72 group->do_announces ();
77 performer_each (get_simple_trans_list (),
78 &Performer::create_audio_elements);
80 if (!announce_infos_.size ())
83 acknowledge_audio_elements ();
84 announce_infos_.clear ();
89 Performer_group::play_element (Audio_element *e)
91 Context *c = context_->get_parent_context ();
94 Performer_group *pgp = dynamic_cast<Performer_group *> (c->implementation ());
95 pgp->play_element (e);
100 Performer_group::get_tempo () const
102 Context *c = context_->get_parent_context ();
105 Performer_group *pgp = dynamic_cast<Performer_group *> (c->implementation ());
106 return pgp->get_tempo ();