/*
midi-walker.hh -- declare Midi_walker
- (c) 1996,97 Han-Wen Nienhuys, Jan Nieuwenhuizen <jan@digicash.com>
- */
-
-#ifndef MIDIWALKER_HH
-#define MIDIWALKER_HH
+ (c) 1996--2008 Han-Wen Nienhuys <hanwen@xs4all.nl>
+ Jan Nieuwenhuizen <janneke@gnu.org>
+*/
+#ifndef MIDI_WALKER_HH
+#define MIDI_WALKER_HH
+#include "pqueue.hh"
#include "lily-proto.hh"
+#include "moment.hh"
-#if 0
-
-/*
- sketch. . .
-
- It would be totally cool to share code with the Engraver hierarchy,
- but this is very tough i think.
-
- */
-
-class Voice_performer_group_performer : public Performer_group_performer {
-
+struct Midi_note_event : PQueue_ent<int, Midi_note *>
+{
+ bool ignore_;
+ Midi_note_event ();
};
-#endif
-
-#endif // MIDIWALKER_HH
-
+int compare (Midi_note_event const &left, Midi_note_event const &right);
+
+/**
+ walk audio and output midi
+*/
+class Midi_walker
+{
+public:
+ Midi_walker (Audio_staff *audio_staff, Midi_track *midi_track,
+ int channel);
+ ~Midi_walker ();
+
+ void process ();
+ void operator ++ (int);
+ bool ok () const;
+ void finalize ();
+private:
+ void do_start_note (Midi_note *note);
+ void do_stop_notes (int);
+ void output_event (int, Midi_item *l);
+ Midi_item *get_midi (Audio_item*);
+ int channel_;
+ Midi_track *track_;
+ Audio_staff *staff_;
+ vsize index_;
+ vector<Audio_item*> items_;
+ PQueue<Midi_note_event> stop_note_queue;
+ int last_tick_;
+
+ vector<Midi_item*> midi_events_;
+};
+#endif // MIDI_WALKER_HH