Only issue warning about running configure

[lilypond.git] / lily / note-performer.cc

diff --git a/lily/note-performer.cc b/lily/note-performer.cc
index 95adb43ae6c22956a3b76d7fef78c2df06f4231d..ab6f6a188735bb621ddaa89efea95a6bb78a1c77 100644 (file)
--- a/lily/note-performer.cc
+++ b/lily/note-performer.cc
@@ -1,17 +1,123 @@
 /*
   note-performer.cc -- implement Note_performer
 
-  (c) 1996, 1997 Han-Wen Nienhuys <hanwen@stack.nl>
-                 Jan Nieuwenhuizen <jan@digicash.com>
+  source file of the GNU LilyPond music typesetter
+
+  (c) 1996--2004 Jan Nieuwenhuizen <janneke@gnu.org>
  */
 
-#if 0
-#include "note-performer.hh"
+#include "performer.hh"
+#include "event.hh"
+#include "audio-item.hh"
+#include "audio-column.hh"
+#include "global-context.hh"
+#include "warn.hh"
+
+/**
+Convert evs to audio notes.
+*/
+class Note_performer : public Performer {
+public:
+  TRANSLATOR_DECLARATIONS(Note_performer);
+  
+protected:
+  virtual bool try_music (Music *ev) ;
+
+  virtual void stop_translation_timestep ();
+  virtual void create_audio_elements ();
+ 
+private:
+  Link_array<Music> note_evs_;
+  Link_array<Audio_note> notes_;
+  Link_array<Audio_note> delayeds_;
+};
 
 void 
-process_request() 
+Note_performer::create_audio_elements ()
+{
+  if (note_evs_.size ())
+    {
+      int transposing = 0;
+
+      SCM prop = get_property ("instrumentTransposition");
+      if (unsmob_pitch (prop)) 
+       transposing = unsmob_pitch (prop)->semitone_pitch ();
+
+      while (note_evs_.size ())
+       {
+         Music* n = note_evs_.pop ();
+         SCM pit =  n->get_property ("pitch");
+
+         if (Pitch * pitp = unsmob_pitch (pit))
+           {
+             Audio_note* p = new Audio_note (*pitp,  n->get_length (), transposing);
+             Audio_element_info info (p, n);
+             announce_element (info);
+             notes_.push (p);
+           }
+       }
+      note_evs_.clear ();
+    }
+}
+
+
+void
+Note_performer::stop_translation_timestep ()
+{
+  // why don't grace notes show up here?
+  // --> grace notes effectively do not get delayed
+  Global_context * global = get_global_context ();
+  for (int i=0; i < notes_.size (); i++)
+    {
+      Audio_note* n = notes_[i];
+      Moment m= n->delayed_until_mom_;
+      if (m.to_bool ())
+       {
+         global->add_moment_to_process (m);
+         delayeds_.push (n);
+         notes_[i] = 0;
+         notes_.del (i);
+         i--;
+       }
+    }
+
+  Moment now = now_mom ();
+  for (int i=0; i < notes_.size (); i++)
+    {
+      play_element (notes_[i]);
+    }
+  notes_.clear ();
+  note_evs_.clear ();
+  for (int i=0; i < delayeds_.size (); i++)
+    {
+      Audio_note* n = delayeds_[i];
+      if (n->delayed_until_mom_ <= now)
+       {
+         play_element (n);
+         delayeds_[i] = 0;
+         delayeds_.del (i);
+         i--;
+       }
+    }
+}
+ 
+bool
+Note_performer::try_music (Music* ev)
+{
+  if (ev->is_mus_type ("note-event"))
+    {
+      note_evs_.push (ev);
+      return true;
+    }
+  else if (ev->is_mus_type ("busy-playing-event"))
+    return note_evs_.size ();
+  
+  return false;
+}
+
+ENTER_DESCRIPTION(Note_performer,"","",
+                 "note-event busy-playing-event","","","");
+
+Note_performer::Note_performer()
 {
-    if ( when() == off_mom_ )
-       play_event( Note_event( current_l_->pitch() ) );
 }
-#endif