2003 -> 2004

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

diff --git a/lily/note-performer.cc b/lily/note-performer.cc
index 03d53b1f0898706790c51a8f5d6f9e892cfd6c45..02b0baceff030583b02c4be3a657e4ee38077746 100644 (file)
--- a/lily/note-performer.cc
+++ b/lily/note-performer.cc
@@ -1,71 +1,140 @@
 /*
   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>
  */
 
-#include "note-performer.hh"
-#include "translator.hh"
-#include "input-translator.hh"
-#include "musical-request.hh"
-#include "midi-item.hh"
-#include "debug.hh"
+#include "performer.hh"
+#include "event.hh"
+#include "audio-item.hh"
+#include "audio-column.hh"
+#include "global-translator.hh"
+#include "warn.hh"
 
-IMPLEMENT_IS_TYPE_B1(Note_performer,Performer);
-IMPLEMENT_STATIC_NAME(Note_performer);
-ADD_THIS_PERFORMER(Note_performer);
+/**
+Convert evs to audio notes.
+*/
+class Note_performer : public Performer {
+public:
+  TRANSLATOR_DECLARATIONS(Note_performer);
+  
+protected:
+  virtual bool try_music (Music *ev) ;
 
-Note_performer::Note_performer()
-{
-    // is this what we want? 
-    // or do we need to cache/keep note until it has ended?
-    note_req_l_ = 0;
-}
+  virtual void stop_translation_timestep ();
+  virtual void create_audio_elements ();
+  Global_translator* get_global_translator ();
+
+private:
+  Link_array<Music> note_evs_;
+  Link_array<Audio_note> notes_;
+  Link_array<Audio_note> delayeds_;
+};
 
-Note_performer::~Note_performer()
+void 
+Note_performer::create_audio_elements ()
 {
+  if (note_evs_.size ())
+    {
+      int transposing_i = 0;
+      //urg
+      SCM prop = get_property ("transposing");
+      if (gh_number_p (prop)) 
+       transposing_i = gh_scm2int (prop);
+
+      while (note_evs_.size ())
+       {
+         Music* n = note_evs_.pop ();
+         Pitch *pit =  unsmob_pitch (n->get_mus_property ("pitch"));
+
+         if (pit)
+           {
+             Audio_note* p = new Audio_note (*pit,  n->get_length (), transposing_i);
+             Audio_element_info info (p, n);
+             announce_element (info);
+             notes_.push (p);
+           }
+       }
+      note_evs_.clear ();
+    }
 }
 
-void 
-Note_performer::do_print() const
+Global_translator*
+Note_performer::get_global_translator ()
 {
-#ifndef NPRINT
-    if ( note_req_l_ )
-       note_req_l_->print();
-#endif
+  Translator *t = this;
+  Global_translator *global =0;
+  do
+    {
+      t = t->daddy_trans_ ;
+      global = dynamic_cast<Global_translator*> (t);
+    }
+  while (!global);
+
+  return global;
 }
 
-void 
-Note_performer::process_requests() 
+
+void
+Note_performer::stop_translation_timestep ()
 {
-//    if ( when() == off_mom_ )
-//     play_event( Note_event( current_l_->pitch() ) );
 
-//Midi_note( Melodic_req* melreq_l, int channel_i, bool on_bo  )
+  // why don't grace notes show up here?
+  // --> grace notes effectively do not get delayed
+  Global_translator* global = get_global_translator ();
+  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--;
+       }
+    }
 
-    // this is _really_ braindead, but it generates some output
-    if ( note_req_l_ && note_req_l_->melodic() ) {
-       Midi_note n( note_req_l_->melodic(), 0, true  );
-       play_event( &n );
+  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--;
+       }
     }
-    note_req_l_ = 0;
 }
-
-bool 
-Note_performer::try_request( Request* req_l )
+ 
+bool
+Note_performer::try_music (Music* ev)
 {
-    if ( note_req_l_ )
-       return false;
-    
- // huh?
-//    if (req_l->musical() && (req_l->musical()->note() || req_l->musical()->rest()))
-//     note_req_l_ = req_l->musical()->rhythmic();
-    if ( req_l->musical() && req_l->musical()->note() )
-       note_req_l_ = req_l->musical()->melodic();
-    else
-       return false;
-
-    return true;
+  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()
+{
+}