add explicit inverse fade in/out curves for use when doing constant power xfading

[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..2fe56f015faaa2077af081757ead771cbf06132c 100644 (file)
--- a/libs/ardour/ardour/midi_region.h
+++ b/libs/ardour/ardour/midi_region.h
@@ -23,24 +23,34 @@
 
 #include <vector>
 
-#include "pbd/fastlog.h"
-#include "pbd/undo.h"
-
 #include "ardour/ardour.h"
-#include "ardour/gain.h"
-#include "ardour/logcurve.h"
-#include "ardour/midi_model.h"
-#include "ardour/midi_source.h"
 #include "ardour/region.h"
 
 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;
+               extern PBD::PropertyDescriptor<Evoral::MusicalTime> start_beats;
+               extern PBD::PropertyDescriptor<Evoral::MusicalTime> length_beats;
+       }
+}
+
+namespace Evoral {
+template<typename Time> class EventSink;
+}
+
 namespace ARDOUR {
 
 class Route;
 class Playlist;
 class Session;
 class MidiFilter;
+class MidiModel;
 class MidiSource;
 class MidiStateTracker;
 template<typename T> class MidiRingBuffer;
@@ -48,73 +58,96 @@ template<typename T> class MidiRingBuffer;
 class MidiRegion : public Region
 {
   public:
+       static void make_property_quarks ();
+
        ~MidiRegion();
 
-        boost::shared_ptr<MidiRegion> clone ();
-        
+       boost::shared_ptr<MidiRegion> clone () const;
+
        boost::shared_ptr<MidiSource> midi_source (uint32_t n=0) const;
 
        /* Stub Readable interface */
        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,
-                           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 position,
-                                  framecnt_t dur,
-                                  uint32_t  chan_n = 0,
-                                  NoteMode  mode = Sustained) const;
-
-       XMLNode& state (bool);
+       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;
+
+       framecnt_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 ();
        int      set_state (const XMLNode&, int version);
-       
+
        int separate_by_channel (ARDOUR::Session&, std::vector< boost::shared_ptr<Region> >&) const;
 
        /* automation */
-       
-       boost::shared_ptr<Evoral::Control>
-       control(const Evoral::Parameter& id, bool create=false) {
-               return model()->control(id, create);
-       }
 
-       virtual boost::shared_ptr<const Evoral::Control>
-       control(const Evoral::Parameter& id) const {
-               return model()->control(id);
-       }
+       boost::shared_ptr<Evoral::Control> control(const Evoral::Parameter& id, bool create=false);
+
+       virtual boost::shared_ptr<const Evoral::Control> control(const Evoral::Parameter& id) const;
 
        /* export */
 
-       int exportme (ARDOUR::Session&, ARDOUR::ExportSpecification&);
+       boost::shared_ptr<MidiModel> model();
+       boost::shared_ptr<const MidiModel> model() const;
+
+       void fix_negative_start ();
+       void transpose (int);
 
-       boost::shared_ptr<MidiModel> model()             { return midi_source()->model(); }
-       boost::shared_ptr<const MidiModel> model() const { return midi_source()->model(); }
+  protected:
+
+       virtual bool can_trim_start_before_source_start () const {
+               return true;
+       }
 
   private:
        friend class RegionFactory;
+       PBD::Property<Evoral::MusicalTime> _start_beats;
+       PBD::Property<Evoral::MusicalTime> _length_beats;
 
        MidiRegion (const SourceList&);
-       MidiRegion (boost::shared_ptr<const MidiRegion>, frameoffset_t offset = 0, bool offset_relative = true);
+       MidiRegion (boost::shared_ptr<const MidiRegion>);
+       MidiRegion (boost::shared_ptr<const MidiRegion>, frameoffset_t offset);
 
-  private:
-       framecnt_t _read_at (const SourceList&, Evoral::EventSink<nframes_t>& dst,
-                            framepos_t position,
-                            framecnt_t dur,
-                            uint32_t chan_n = 0,
-                            NoteMode mode = Sustained, 
-                            MidiStateTracker* tracker = 0) const;
+       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 set_start_internal (framecnt_t);
+       void update_length_beats ();
+
+       void model_changed ();
+       void model_automation_state_changed (Evoral::Parameter const &);
+       void model_contents_changed ();
+
+       void set_start_beats_from_start_frames ();
+       void update_after_tempo_map_change ();
+
+       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 */