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 568638ed2138560b6de6e883ae3f546924d51cf5..650c7c9b2e1329b809eece02ea30ad976a28ab37 100644 (file)
--- a/libs/ardour/ardour/midi_region.h
+++ b/libs/ardour/ardour/midi_region.h
@@ -35,6 +35,16 @@
 
 class XMLNode;
 
+namespace ARDOUR {
+        namespace Properties {
+                /* this is pseudo-property: nothing has this as an actual
+                   property, but it allows us to signal changes to the
+                   MidiModel used by the MidiRegion 
+                */
+                extern PBD::PropertyDescriptor<void*> midi_data; 
+        }
+}
+
 namespace ARDOUR {
 
 class Route;
@@ -48,6 +58,8 @@ template<typename T> class MidiRingBuffer;
 class MidiRegion : public Region
 {
   public:
+       static void make_property_quarks ();
+
        ~MidiRegion();
 
         boost::shared_ptr<MidiRegion> clone ();
@@ -58,20 +70,20 @@ 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,
                                   NoteMode  mode = Sustained) const;
 
-       XMLNode& state (bool);
+       XMLNode& state ();
        int      set_state (const XMLNode&, int version);
        
        int separate_by_channel (ARDOUR::Session&, std::vector< boost::shared_ptr<Region> >&) const;
@@ -95,26 +107,48 @@ 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,
                             NoteMode mode = Sustained, 
                             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 model_changed ();
+       void model_automation_state_changed (Evoral::Parameter const &);
+        void model_contents_changed ();
+
+       std::set<Evoral::Parameter> _filtered_parameters; ///< parameters that we ask our source not to return when reading
+       PBD::ScopedConnection _model_connection;
+       PBD::ScopedConnection _source_connection;
+        PBD::ScopedConnection _model_contents_connection;
 
-       void switch_source(boost::shared_ptr<Source> source);
+        double _last_length_beats;
 };
 
 } /* namespace ARDOUR */