/*
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
-#if 0
-#include "note-performer.hh"
+ (c) 1996--2005 Jan Nieuwenhuizen <janneke@gnu.org>
+*/
-void
-process_request()
+#include "performer.hh"
+#include "audio-item.hh"
+#include "audio-column.hh"
+#include "global-context.hh"
+#include "warn.hh"
+#include "music.hh"
+
+/**
+ Convert evs to audio notes.
+*/
+class Note_performer : public Performer
+{
+public:
+ TRANSLATOR_DECLARATIONS (Note_performer);
+
+protected:
+ virtual bool try_music (Music *ev);
+
+ void stop_translation_timestep ();
+ virtual void create_audio_elements ();
+
+private:
+ Link_array<Music> note_evs_;
+ Link_array<Audio_note> notes_;
+};
+
+void
+Note_performer::create_audio_elements ()
+{
+ if (note_evs_.size ())
+ {
+ int transposing = 0;
+
+ SCM prop = get_property ("instrumentTransposition");
+ if (unsmob_pitch (prop))
+ transposing = unsmob_pitch (prop)->semitone_pitch ();
+
+ while (note_evs_.size ())
+ {
+ Music *n = note_evs_.pop ();
+ SCM pit = n->get_property ("pitch");
+
+ if (Pitch *pitp = unsmob_pitch (pit))
+ {
+ Audio_note *p = new Audio_note (*pitp, n->get_length (), - transposing);
+ Audio_element_info info (p, n);
+ announce_element (info);
+ notes_.push (p);
+ }
+ }
+ note_evs_.clear ();
+ }
+}
+
+void
+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 (int i = 0; i < notes_.size (); i++)
+ {
+ play_element (notes_[i]);
+ }
+ notes_.clear ();
+ note_evs_.clear ();
+}
+
+bool
+Note_performer::try_music (Music *ev)
+{
+ 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;
+}
+
+#include "translator.icc"
+
+ADD_TRANSLATOR (Note_performer, "", "",
+ "note-event busy-playing-event",
+ "", "");
+
+Note_performer::Note_performer ()
{
- if ( when() == off_mom_ )
- play_event( Note_event( current_l_->pitch() ) );
}
-#endif