release: 1.3.109

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

diff --git a/lily/note-performer.cc b/lily/note-performer.cc
index 1543a56634ddb99ef2e9d0d0ba36a6f29306d14e..6d51326aa2817ab5d80a6a3a9a6749d16412c194 100644 (file)
--- a/lily/note-performer.cc
+++ b/lily/note-performer.cc
@@ -1,82 +1,127 @@
 /*
   note-performer.cc -- implement Note_performer
 
-  (c) 1996, 1997 Jan Nieuwenhuizen <jan@digicash.com>
+  source file of the GNU LilyPond music typesetter
+
+  (c) 1996--2000 Jan Nieuwenhuizen <janneke@gnu.org>
  */
 
-#include "note-performer.hh"
-#include "translator.hh"
-#include "input-translator.hh"
+#include "performer.hh"
 #include "musical-request.hh"
-#include "midi-item.hh"
+#include "audio-item.hh"
+#include "audio-column.hh"
+#include "global-translator.hh"
 #include "debug.hh"
 
-IMPLEMENT_IS_TYPE_B1(Note_performer,Performer);
-IMPLEMENT_STATIC_NAME(Note_performer);
-ADD_THIS_PERFORMER(Note_performer);
+/**
+Convert reqs to audio notes.
+*/
+class Note_performer : public Performer {
+public:
+  VIRTUAL_COPY_CONS(Translator);
+  
+protected:
+  virtual bool try_music (Music *req_l) ;
 
-Note_performer::Note_performer()
-{
-    note_req_l_ = 0;
-    off_mom_ = 0;
-}
+  virtual void stop_translation_timestep ();
+  virtual void create_grobs ();
+  Global_translator* global_translator_l ();
 
-Note_performer::~Note_performer()
-{
-}
+private:
+  Array<Note_req*> note_req_l_arr_;
+  Array<Audio_note*> note_p_arr_;
+  Array<Audio_note*> delayed_p_arr_;
+};
+
+ADD_THIS_TRANSLATOR (Note_performer);
 
 void 
-Note_performer::do_print() const
+Note_performer::create_grobs ()
 {
-#ifndef NPRINT
-    if ( note_req_l_ )
-       note_req_l_->print();
-#endif
+  if (note_req_l_arr_.size ())
+    {
+      int transposing_i = 0;
+      //urg
+      SCM prop = get_property ("transposing");
+      if (gh_number_p(prop)) 
+       transposing_i = gh_scm2int (prop);
+
+      while (note_req_l_arr_.size ())
+       {
+         Note_req* n = note_req_l_arr_.pop ();
+         Pitch pit =  * unsmob_pitch (n->get_mus_property ("pitch"));
+         Audio_note* p = new Audio_note (pit,  n->length_mom (), transposing_i);
+         Audio_element_info info (p, n);
+         announce_element (info);
+         note_p_arr_.push (p);
+       }
+      note_req_l_arr_.clear ();
+    }
 }
 
-void 
-Note_performer::process_requests() 
+Global_translator*
+Note_performer::global_translator_l ()
 {
-//    if ( when() == off_mom_ )
-//     play_event( Note_event( current_l_->pitch() ) );
+  Translator *t = this;
+  Global_translator *global_l =0;
+  do
+    {
+      t = t->daddy_trans_l_ ;
+      global_l = dynamic_cast<Global_translator*> (t);
+    }
+  while (!global_l);
+
+  return global_l;
+}
 
-//Midi_note( Melodic_req* melreq_l, int channel_i, bool on_bo  )
 
-    // this is _really_ braindead, but it generates some output
-    if ( !note_req_l_ || !note_req_l_->melodic()  || !note_req_l_->rhythmic() )
-       return;
+void
+Note_performer::stop_translation_timestep ()
+{
+
+  // why don't grace notes show up here?
+  // --> grace notes effectively do not get delayed
+  Global_translator* global_l = global_translator_l ();
+  for (int i=0; i < note_p_arr_.size (); i++)
+    {
+      Audio_note* n = note_p_arr_[i];
+      if (Moment m= n->delayed_until_mom_)
+       {
+         global_l->add_moment_to_process (m);
+         delayed_p_arr_.push (n);
+         note_p_arr_[i] = 0;
+         note_p_arr_.del (i);
+         i--;
+       }
+    }
 
-    // ugh, need to know channel (===track===staff) too
-    int channel_i = 0;
-    Moment mom = get_mom();
-    if ( !off_mom_ ) { // start note
-       off_mom_ = mom + note_req_l_->duration();
-       Midi_note n( note_req_l_->melodic(), channel_i, true );
-       play_event( &n );
+  Moment now = now_mom ();
+  for (int i=0; i < note_p_arr_.size (); i++)
+    {
+      play_element (note_p_arr_[i]);
     }
-    else if ( mom == off_mom_ ) {
-       Midi_note n( note_req_l_->melodic(), channel_i, false );
-       play_event( &n );
-       note_req_l_ = 0;
-       off_mom_ = 0;
+  note_p_arr_.clear ();
+  note_req_l_arr_.clear ();
+  for (int i=0; i < delayed_p_arr_.size (); i++)
+    {
+      Audio_note* n = delayed_p_arr_[i];
+      if (n->delayed_until_mom_ <= now)
+       {
+         play_element (n);
+         delayed_p_arr_[i] = 0;
+         delayed_p_arr_.del (i);
+         i--;
+       }
     }
 }
-
-bool 
-Note_performer::try_request( Request* req_l )
+ 
+bool
+Note_performer::try_music (Music* req_l)
 {
-    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() )
-// huh?
-       note_req_l_ = req_l->musical()->melodic();
-    else
-       return false;
-
-    return true;
+  if (Note_req *nr = dynamic_cast <Note_req *> (req_l))
+    {
+      note_req_l_arr_.push (nr);
+      return true;
+    }
+  return false;
 }
-