use notification of what was changed in MidiRegion::post_set() call

[ardour.git] / libs / ardour / ardour / midi_region.h

diff --git a/libs/ardour/ardour/midi_region.h b/libs/ardour/ardour/midi_region.h
index a7a5fb3a82dc7596b8500c48262a71373074f735..650c7c9b2e1329b809eece02ea30ad976a28ab37 100644 (file)
--- a/libs/ardour/ardour/midi_region.h
+++ b/libs/ardour/ardour/midi_region.h
@@ -70,14 +70,14 @@ class MidiRegion : public Region
        virtual framecnt_t read (Sample*, framepos_t /*pos*/, framecnt_t /*cnt*/, int /*channel*/) const { return 0; }
        virtual framecnt_t readable_length() const { return length(); }
 
-       framecnt_t read_at (Evoral::EventSink<nframes_t>& dst,
+       framecnt_t read_at (Evoral::EventSink<framepos_t>& dst,
                            framepos_t position,
                            framecnt_t dur,
                            uint32_t  chan_n = 0,
                            NoteMode  mode = Sustained,
                            MidiStateTracker* tracker = 0) const;
        
-       framepos_t master_read_at (MidiRingBuffer<nframes_t>& dst,
+       framepos_t master_read_at (MidiRingBuffer<framepos_t>& dst,
                                   framepos_t position,
                                   framecnt_t dur,
                                   uint32_t  chan_n = 0,
@@ -107,14 +107,22 @@ class MidiRegion : public Region
        boost::shared_ptr<MidiModel> model()             { return midi_source()->model(); }
        boost::shared_ptr<const MidiModel> model() const { return midi_source()->model(); }
 
+       void fix_negative_start ();
+
+  protected:
+       
+       virtual bool can_trim_start_before_source_start () const {
+               return true;
+       }
+
   private:
        friend class RegionFactory;
+        PBD::Property<Evoral::MusicalTime> _length_beats;
 
        MidiRegion (const SourceList&);
        MidiRegion (boost::shared_ptr<const MidiRegion>, frameoffset_t offset = 0, bool offset_relative = true);
 
-  private:
-       framecnt_t _read_at (const SourceList&, Evoral::EventSink<nframes_t>& dst,
+       framecnt_t _read_at (const SourceList&, Evoral::EventSink<framepos_t>& dst,
                             framepos_t position,
                             framecnt_t dur,
                             uint32_t chan_n = 0,
@@ -122,13 +130,15 @@ class MidiRegion : public Region
                             MidiStateTracker* tracker = 0) const;
 
        void register_properties ();
+        void post_set (const PBD::PropertyChange&);
 
        void recompute_at_start ();
        void recompute_at_end ();
 
        void set_position_internal (framepos_t pos, bool allow_bbt_recompute);
+        void set_length_internal (framecnt_t len);
+        void update_length_beats ();
 
-       void switch_source(boost::shared_ptr<Source> source);
        void model_changed ();
        void model_automation_state_changed (Evoral::Parameter const &);
         void model_contents_changed ();
@@ -137,6 +147,8 @@ class MidiRegion : public Region
        PBD::ScopedConnection _model_connection;
        PBD::ScopedConnection _source_connection;
         PBD::ScopedConnection _model_contents_connection;
+
+        double _last_length_beats;
 };
 
 } /* namespace ARDOUR */