Web-ja: update introduction

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

diff --git a/lily/drum-note-performer.cc b/lily/drum-note-performer.cc
index a29b7a1dee7986a512317066d44f61c7e603fd92..9fce62808fe910892b122b99831e53bb7370894d 100644 (file)
--- a/lily/drum-note-performer.cc
+++ b/lily/drum-note-performer.cc
@@ -1,18 +1,29 @@
 /*
-  note-performer.cc -- implement Drum_note_performer
+  This file is part of LilyPond, the GNU music typesetter.
 
-  source file of the GNU LilyPond music typesetter
+  Copyright (C) 1996--2015 Jan Nieuwenhuizen <janneke@gnu.org>
 
-  (c) 1996--2006 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
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  LilyPond is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
 */
 
 #include "performer.hh"
 #include "audio-item.hh"
 #include "audio-column.hh"
 #include "global-context.hh"
+#include "stream-event.hh"
+#include "translator.icc"
 #include "warn.hh"
-#include "pitch.hh"
-#include "music.hh"
 
 class Drum_note_performer : public Performer
 {
@@ -20,16 +31,15 @@ public:
   TRANSLATOR_DECLARATIONS (Drum_note_performer);
 
 protected:
-  virtual bool try_music (Music *ev);
   void stop_translation_timestep ();
   void process_music ();
-
+  void listen_note (Stream_event *);
 private:
-  vector<Music*> note_evs_;
-  vector<Audio_note*> notes_;
+  vector<Stream_event *> note_evs_;
 };
 
-Drum_note_performer::Drum_note_performer ()
+Drum_note_performer::Drum_note_performer (Context *c)
+  : Performer (c)
 {
 }
 
@@ -40,22 +50,42 @@ Drum_note_performer::process_music ()
 
   while (note_evs_.size ())
     {
-      Music *n = note_evs_.back ();
+      Stream_event *n = note_evs_.back ();
       note_evs_.pop_back ();
       SCM sym = n->get_property ("drum-type");
       SCM defn = SCM_EOL;
 
       if (scm_is_symbol (sym)
-         && (scm_hash_table_p (tab) == SCM_BOOL_T))
-       defn = scm_hashq_ref (tab, sym, SCM_EOL);
-
-      if (Pitch *pit = unsmob_pitch (defn))
-       {
-         Audio_note *p = new Audio_note (*pit, n->get_length (), 0);
-         Audio_element_info info (p, n);
-         announce_element (info);
-         notes_.push_back (p);
-       }
+          && to_boolean (scm_hash_table_p (tab)))
+        defn = scm_hashq_ref (tab, sym, SCM_EOL);
+
+      if (Pitch *pit = unsmob<Pitch> (defn))
+        {
+          SCM articulations = n->get_property ("articulations");
+          Stream_event *tie_event = 0;
+          Moment len = get_event_length (n, now_mom ());
+          int velocity = 0;
+          for (SCM s = articulations; scm_is_pair (s); s = scm_cdr (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);
+            }
+
+          Audio_note *p = new Audio_note (*pit, len,
+                                          tie_event, Pitch (0, 0), velocity);
+          Audio_element_info info (p, n);
+          announce_element (info);
+        }
     }
 
   note_evs_.clear ();
@@ -64,31 +94,31 @@ Drum_note_performer::process_music ()
 void
 Drum_note_performer::stop_translation_timestep ()
 {
-  // why don't grace notes show up here?
-  // --> grace notes effectively do not get delayed
-  Moment now = now_mom ();
-  for (vsize i = 0; i < notes_.size (); i++)
-    play_element (notes_[i]);
-  notes_.clear ();
   note_evs_.clear ();
 }
 
-bool
-Drum_note_performer::try_music (Music *ev)
+void
+Drum_note_performer::listen_note (Stream_event *ev)
 {
-  if (ev->is_mus_type ("note-event"))
-    {
-      note_evs_.push_back (ev);
-      return true;
-    }
-  else if (ev->is_mus_type ("busy-playing-event"))
-    return note_evs_.size ();
-
-  return false;
+  note_evs_.push_back (ev);
 }
 
-#include "translator.icc"
+void
+Drum_note_performer::boot ()
+{
+  ADD_LISTENER (Drum_note_performer, note);
+}
 
 ADD_TRANSLATOR (Drum_note_performer,
-               "Play drum notes.", "",
-               "note-event busy-playing-event", "", "");
+                /* doc */
+                "Play drum notes.",
+
+                /* create */
+                "",
+
+                /* read */
+                "",
+
+                /* write */
+                ""
+               );