lily/score-performer.cc

   1 /*
   2   score-performer.cc -- implement Score_performer
   3
   4   source file of the GNU LilyPond music typesetter
   5
   6   (c) 1996--2001 Jan Nieuwenhuizen <janneke@gnu.org>
   7  */
   8
   9 #include "score-performer.hh"
  10 #include "midi-def.hh"
  11 #include "audio-column.hh"
  12 #include "audio-item.hh"
  13 #include "performance.hh"
  14 #include "midi-stream.hh"
  15 #include "string-convert.hh"
  16 #include "debug.hh"
  17 #include "translator-def.hh"
  18
  19
  20
  21 ENTER_DESCRIPTION(Score_performer,
  22 /* descr */       "",
  23 /* creats*/       "",
  24 /* acks  */       "",
  25 /* reads */       "",
  26 /* write */       "");
  27
  28
  29 Score_performer::Score_performer ()
  30 {
  31   performance_p_ = 0;
  32 }
  33
  34
  35 Score_performer::~Score_performer ()
  36 {
  37 }
  38
  39 void
  40 Score_performer::play_element (Audio_element * p)
  41 {
  42   if (Audio_item * i=dynamic_cast<Audio_item *> (p))
  43     {
  44       audio_column_l_->add_audio_item (i);
  45     }
  46   performance_p_->add_element (p);
  47 }
  48
  49 void
  50 Score_performer::announce_element (Audio_element_info info)
  51 {
  52   announce_info_arr_.push (info);
  53
  54
  55   /*
  56     huh?
  57     copied from score-engraver, but
  58     this way staff gets in list twice
  59   if (Audio_item* i = dynamic_cast<Audio_item*> (info.elem_l_))
  60     performance_p_->add_element (i);
  61   */
  62 }
  63
  64 void
  65 Score_performer::prepare (Moment m)
  66 {
  67   Global_translator::prepare (m);
  68   audio_column_l_ = new Audio_column (m);
  69   play_element (audio_column_l_);
  70   start_translation_timestep ();
  71 }
  72
  73
  74 void
  75 Score_performer::one_time_step ()
  76 {
  77   // fixme: put this back.
  78   // process_music ();
  79   announces ();
  80   stop_translation_timestep ();
  81   check_removal ();
  82 }
  83
  84 void
  85 Score_performer::start ()
  86 {
  87 }
  88
  89
  90 int
  91 Score_performer::get_tempo_i () const
  92 {
  93   return performance_p_->midi_l_->get_tempo_i (Moment (Rational (1, 4)));
  94 }
  95
  96 void
  97 Score_performer::finish ()
  98 {
  99   check_removal ();
 100   removal_processing ();
 101 }
 102
 103 Music_output *
 104 Score_performer::get_output_p ()
 105 {
 106   Music_output * o = performance_p_;
 107   performance_p_ =0;
 108   return o;
 109 }
 110
 111 void
 112 Score_performer::initialize ()
 113 {
 114   unsmob_translator_def (definition_)->apply_property_operations (this);
 115   assert (dynamic_cast<Midi_def *> (output_def_l_));
 116   performance_p_ = new Performance;
 117   performance_p_->midi_l_ = dynamic_cast<Midi_def*> (output_def_l_);
 118
 119   Translator_group::initialize ();
 120 }