X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=lily%2Fcontrol-track-performer.cc;h=db6efe649ed5b3fa15c6155d51e8d8084e51b14f;hb=14de2f189e75424bd0b04f4577386b4f0dde1a6e;hp=611bd6b48bcbf310361a6be6a2437c26b7c15446;hpb=a82dc4a0cca57f285e818f6c227c8428a3c02a71;p=lilypond.git

diff --git a/lily/control-track-performer.cc b/lily/control-track-performer.cc
index 611bd6b48b..db6efe649e 100644
--- a/lily/control-track-performer.cc
+++ b/lily/control-track-performer.cc
@@ -13,7 +13,7 @@ class Control_track_performer : public Performer
 {
   Audio_staff *control_track_;
 
-  void add_text (Audio_text::Type, string);
+  void add_text (Audio_text::Type, const string&);
   TRANSLATOR_DECLARATIONS (Control_track_performer);
 protected:
 
@@ -21,7 +21,6 @@ protected:
   virtual void acknowledge_audio_element (Audio_element_info info);
 };
 
-
 Control_track_performer::Control_track_performer ()
 {
   control_track_ = 0;
@@ -30,49 +29,59 @@ Control_track_performer::Control_track_performer ()
 void
 Control_track_performer::acknowledge_audio_element (Audio_element_info info)
 {
-  if (Audio_tempo *tempo = dynamic_cast<Audio_tempo*> (info.elem_))
+  if (Audio_tempo *tempo = dynamic_cast<Audio_tempo *> (info.elem_))
     {
       control_track_->add_audio_item (tempo);
     }
-  if (Audio_time_signature * sig = dynamic_cast<Audio_time_signature *> (info.elem_))
+  if (Audio_time_signature *sig = dynamic_cast<Audio_time_signature *> (info.elem_))
     {
       control_track_->add_audio_item (sig);
     }
 }
 
 void
-Control_track_performer::add_text (Audio_text::Type text_type, string str)
+Control_track_performer::add_text (Audio_text::Type text_type, const string &str)
 {
   Audio_item *text = new Audio_text (text_type, str);
   control_track_->add_audio_item (text);
 
   announce_element (Audio_element_info (text, 0));
-  
+
 }
 
 void
 Control_track_performer::initialize ()
 {
-  control_track_ = new Audio_staff;
+  control_track_ = new Audio_control_track_staff;
   announce_element (Audio_element_info (control_track_, 0));
 
   string id_string = String_convert::pad_to (gnu_lilypond_version_string (), 30);
-  
+
+  // The first audio element in the control track is a placeholder for the
+  // name of the MIDI sequence.  The actual name is stored in the element
+  // later before outputting the track (in Performance::output, see
+  // performance.cc).
   add_text (Audio_text::TRACK_NAME, "control track");
   add_text (Audio_text::TEXT, "creator: ");
   add_text (Audio_text::TEXT, id_string);
 }
 
+void
+Control_track_performer::boot ()
+{
+
+}
+
 ADD_TRANSLATOR (Control_track_performer,
-		/* doc */
-		"",
+                /* doc */
+                "",
 
-		/* create */
-		"",
+                /* create */
+                "",
 
-		/* read */
-		"",
+                /* read */
+                "",
 
-		/* write */
-		""
-		);
+                /* write */
+                ""
+               );