lily/performer-group.cc

   1 /*
   2   This file is part of LilyPond, the GNU music typesetter.
   3
   4   Copyright (C) 1996--2011 Han-Wen Nienhuys <hanwen@xs4all.nl>
   5   Jan Nieuwenhuizen <janneke@gnu.org>
   6
   7   LilyPond is free software: you can redistribute it and/or modify
   8   it under the terms of the GNU General Public License as published by
   9   the Free Software Foundation, either version 3 of the License, or
  10   (at your option) any later version.
  11
  12   LilyPond is distributed in the hope that it will be useful,
  13   but WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15   GNU General Public License for more details.
  16
  17   You should have received a copy of the GNU General Public License
  18   along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "performer-group.hh"
  22
  23 #include "context.hh"
  24 #include "audio-element.hh"
  25 #include "warn.hh"
  26
  27 ADD_TRANSLATOR_GROUP (Performer_group,
  28                       /* doc */
  29                       "",
  30
  31                       /* create */
  32                       "",
  33
  34                       /* read */
  35                       "",
  36
  37                       /* write */
  38                       ""
  39                       );
  40
  41 void
  42 Performer_group::announce_element (Audio_element_info info)
  43 {
  44   announce_infos_.push_back (info);
  45   Translator_group *t
  46     = context ()->get_parent_context ()->implementation ();
  47
  48   if (Performer_group *eg = dynamic_cast<Performer_group *> (t))
  49     eg->announce_element (info);
  50 }
  51
  52 void
  53 Performer_group::acknowledge_audio_elements ()
  54 {
  55   for (vsize j = 0; j < announce_infos_.size (); j++)
  56     {
  57       Audio_element_info info = announce_infos_[j];
  58
  59       for (SCM p = get_simple_trans_list (); scm_is_pair (p); p = scm_cdr (p))
  60         {
  61           Translator *t = unsmob_translator (scm_car (p));
  62           Performer *eng = dynamic_cast<Performer *> (t);
  63           if (eng && eng != info.origin_trans_)
  64             eng->acknowledge_audio_element (info);
  65         }
  66     }
  67 }
  68
  69 void
  70 performer_each (SCM list, Performer_method method)
  71 {
  72   for (SCM p = list; scm_is_pair (p); p = scm_cdr (p))
  73     {
  74       Performer *e = dynamic_cast<Performer *> (unsmob_translator (scm_car (p)));
  75       if (e)
  76         (e->*method) ();
  77     }
  78 }
  79
  80 void
  81 Performer_group::do_announces ()
  82 {
  83   for (SCM s = context ()->children_contexts ();
  84        scm_is_pair (s); s = scm_cdr (s))
  85     {
  86       Context *c = unsmob_context (scm_car (s));
  87       Performer_group *group
  88         = dynamic_cast<Performer_group *> (c->implementation ());
  89       if (group)
  90         group->do_announces ();
  91     }
  92
  93   while (1)
  94     {
  95       performer_each (get_simple_trans_list (),
  96                       &Performer::create_audio_elements);
  97
  98       if (!announce_infos_.size ())
  99         break;
 100
 101       acknowledge_audio_elements ();
 102       announce_infos_.clear ();
 103     }
 104 }