Web-ja: update introduction

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

diff --git a/lily/note-performer.cc b/lily/note-performer.cc
index b0a81195c7185b953fa97c645d83d18eaebd4fc9..44efd745742744e43afa4c7e1033503058ab9ce4 100644 (file)
--- a/lily/note-performer.cc
+++ b/lily/note-performer.cc
@@ -1,7 +1,7 @@
 /*
   This file is part of LilyPond, the GNU music typesetter.
 
-  Copyright (C) 1996--2012 Jan Nieuwenhuizen <janneke@gnu.org>
+  Copyright (C) 1996--2015 Jan Nieuwenhuizen <janneke@gnu.org>
 
   LilyPond is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -35,14 +35,16 @@ protected:
   void stop_translation_timestep ();
   void process_music ();
 
-  DECLARE_TRANSLATOR_LISTENER (note);
+  void listen_note (Stream_event *);
+  void listen_breathing (Stream_event *);
+  void listen_tie (Stream_event *);
+  void listen_articulation (Stream_event *);
 private:
-  vector<Stream_event *> note_evs_;
+  vector<Stream_event *> note_evs_, script_evs_;
   vector<Audio_note *> notes_;
 
   vector<Audio_note *> last_notes_;
   Moment last_start_;
-
 };
 
 void
@@ -53,41 +55,49 @@ Note_performer::process_music ()
 
   Pitch transposing;
   SCM prop = get_property ("instrumentTransposition");
-  if (unsmob_pitch (prop))
-    transposing = *unsmob_pitch (prop);
+  if (unsmob<Pitch> (prop))
+    transposing = *unsmob<Pitch> (prop);
 
   for (vsize i = 0; i < note_evs_.size (); i++)
     {
       Stream_event *n = note_evs_[i];
       SCM pit = n->get_property ("pitch");
 
-      if (Pitch *pitp = unsmob_pitch (pit))
+      if (Pitch *pitp = unsmob<Pitch> (pit))
         {
           SCM articulations = n->get_property ("articulations");
           Stream_event *tie_event = 0;
-          for (SCM s = articulations;
-               !tie_event && scm_is_pair (s);
-               s = scm_cdr (s))
+          Moment len = get_event_length (n, now_mom ());
+          int velocity = 0;
+
+          for (vsize j = script_evs_.size (); j--;)
+            articulations = scm_cons (script_evs_[j]->self_scm (), articulations);
+
+          for (SCM s = articulations; scm_is_pair (s); s = scm_cdr (s))
             {
-              Stream_event *ev = unsmob_stream_event (scm_car (s));
+              Stream_event *ev = unsmob<Stream_event> (scm_car (s));
               if (!ev)
                 continue;
 
               if (ev->in_event_class ("tie-event"))
                 tie_event = ev;
+              SCM f = ev->get_property ("midi-length");
+              if (ly_is_procedure (f))
+                len = robust_scm2moment (scm_call_2 (f, len.smobbed_copy (),
+                                                     context ()->self_scm ()),
+                                         len);
+              velocity += robust_scm2int (ev->get_property ("midi-extra-velocity"), 0);
             }
 
-          Moment len = get_event_length (n, now_mom ());
-
           Audio_note *p = new Audio_note (*pitp, len,
-                                          tie_event, transposing.negated ());
+                                          tie_event, transposing, velocity);
           Audio_element_info info (p, n);
           announce_element (info);
           notes_.push_back (p);
 
           /*
-            Shorten previous note. If it was part of a tie, shorten
-            the first note in the tie.
+            Grace notes shorten the previous non-grace note. If it was
+            part of a tie, shorten the first note in the tie.
            */
           if (now_mom ().grace_part_)
             {
@@ -96,7 +106,11 @@ Note_performer::process_music ()
                   for (vsize i = 0; i < last_notes_.size (); i++)
                     {
                       Audio_note *tie_head = last_notes_[i]->tie_head ();
-                      tie_head->length_mom_ += Moment (0, now_mom ().grace_part_);
+                      Moment start = tie_head->audio_column_->when ();
+                      //Shorten the note if it would overlap. It might
+                      //not if there's a rest in between.
+                      if (start + tie_head->length_mom_ > now_mom ())
+                        tie_head->length_mom_ = now_mom () - start;
                     }
                 }
             }
@@ -115,15 +129,59 @@ Note_performer::stop_translation_timestep ()
 
   notes_.clear ();
   note_evs_.clear ();
+  script_evs_.clear ();
 }
 
-IMPLEMENT_TRANSLATOR_LISTENER (Note_performer, note)
 void
 Note_performer::listen_note (Stream_event *ev)
 {
   note_evs_.push_back (ev);
 }
 
+void
+Note_performer::listen_tie (Stream_event *ev)
+{
+  script_evs_.push_back (ev);
+}
+
+void
+Note_performer::listen_articulation (Stream_event *ev)
+{
+  script_evs_.push_back (ev);
+}
+
+void
+Note_performer::listen_breathing (Stream_event *ev)
+{
+  //Shorten previous note if needed
+  SCM f = ev->get_property ("midi-length");
+  if (ly_is_procedure (f))
+    for (vsize i = 0; i < last_notes_.size (); i++)
+      {
+        //Pass midi-length the available time since the last note started,
+        //including any intervening rests. It returns how much is left for the
+        //note.
+        Moment start = last_notes_[i]->audio_column_->when ();
+        Moment available = now_mom () - start;
+        Moment len = robust_scm2moment (scm_call_2 (f, available.smobbed_copy (),
+                                                    context ()->self_scm ()), available);
+        //Take time from the first note of the tie, since it has all the length.
+        Audio_note *tie_head = last_notes_[i]->tie_head ();
+        len += start - tie_head->audio_column_->when ();
+        if (len < tie_head->length_mom_)
+          tie_head->length_mom_ = len;
+      }
+}
+
+void
+Note_performer::boot ()
+{
+  ADD_LISTENER (Note_performer, note);
+  ADD_LISTENER (Note_performer, breathing);
+  ADD_LISTENER (Note_performer, tie);
+  ADD_LISTENER (Note_performer, articulation);
+}
+
 ADD_TRANSLATOR (Note_performer,
                 /* doc */
                 "",
@@ -138,6 +196,7 @@ ADD_TRANSLATOR (Note_performer,
                 ""
                );
 
-Note_performer::Note_performer ()
+Note_performer::Note_performer (Context *c)
+  : Performer (c)
 {
 }