Automation of LV2 plugin properties.

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

diff --git a/libs/ardour/ardour/processor.h b/libs/ardour/ardour/processor.h
index d6d023d8d1b67d2ba03e56da694193a4b54c7db6..85d466a169265434d859ba44da3aa4a7343d727e 100644 (file)
--- a/libs/ardour/ardour/processor.h
+++ b/libs/ardour/ardour/processor.h
@@ -30,6 +30,7 @@
 #include "ardour/buffer_set.h"
 #include "ardour/latent.h"
 #include "ardour/session_object.h"
+#include "ardour/libardour_visibility.h"
 #include "ardour/types.h"
 #include "ardour/automatable.h"
 
@@ -41,13 +42,13 @@ class Session;
 class Route;
 
 /** A mixer strip element - plugin, send, meter, etc */
-class Processor : public SessionObject, public Automatable, public Latent
+class LIBARDOUR_API Processor : public SessionObject, public Automatable, public Latent
 {
   public:
        static const std::string state_node_name;
 
        Processor(Session&, const std::string& name);
-        Processor (const Processor& other);
+       Processor (const Processor& other);
 
        virtual ~Processor() { }
 
@@ -58,35 +59,44 @@ class Processor : public SessionObject, public Automatable, public Latent
 
        bool active () const { return _pending_active; }
 
+       virtual bool does_routing() const { return false; }
+
        bool get_next_ab_is_active () const { return _next_ab_is_active; }
        void set_next_ab_is_active (bool yn) { _next_ab_is_active = yn; }
 
        virtual framecnt_t signal_latency() const { return 0; }
 
        virtual int set_block_size (pframes_t /*nframes*/) { return 0; }
-        virtual bool requires_fixed_sized_buffers() const { return false; }
+       virtual bool requires_fixed_sized_buffers() const { return false; }
 
        /** @param result_required true if, on return from this method, @a bufs is required to contain valid data;
         *  if false, the method need not bother writing to @a bufs if it doesn't want to.
-        */  
+        */
        virtual void run (BufferSet& /*bufs*/, framepos_t /*start_frame*/, framepos_t /*end_frame*/, pframes_t /*nframes*/, bool /*result_required*/) {}
        virtual void silence (framecnt_t /*nframes*/) {}
 
        virtual void activate ()   { _pending_active = true; ActiveChanged(); }
        virtual void deactivate () { _pending_active = false; ActiveChanged(); }
-        virtual void flush() {}
+       virtual void flush() {}
 
        virtual bool configure_io (ChanCount in, ChanCount out);
 
        /* Derived classes should override these, or processor appears as an in-place pass-through */
 
-       virtual bool can_support_io_configuration (const ChanCount& in, ChanCount& out) const = 0;
+       virtual bool can_support_io_configuration (const ChanCount& in, ChanCount& out) = 0;
        virtual ChanCount input_streams () const { return _configured_input; }
        virtual ChanCount output_streams() const { return _configured_output; }
 
        virtual void realtime_handle_transport_stopped () {}
        virtual void realtime_locate () {}
 
+       /* most processors won't care about this, but plugins that
+          receive MIDI or similar data from an input source that
+          may suddenly go "quiet" because of monitoring changes
+          need to know about it.
+       */
+       virtual void monitoring_changed() {}
+
        /* note: derived classes should implement state(), NOT get_state(), to allow
           us to merge C++ inheritance and XML lack-of-inheritance reasonably
           smoothly.
@@ -95,18 +105,21 @@ class Processor : public SessionObject, public Automatable, public Latent
        virtual XMLNode& state (bool full);
        XMLNode& get_state (void);
        int set_state (const XMLNode&, int version);
-       
+
        void set_pre_fader (bool);
 
        PBD::Signal0<void>                     ActiveChanged;
        PBD::Signal2<void,ChanCount,ChanCount> ConfigurationChanged;
-        
-        void  set_ui (void*);
-        void* get_ui () const { return _ui_pointer; }
+
+       void  set_ui (void*);
+       void* get_ui () const { return _ui_pointer; }
+
+        void set_owner (SessionObject*);
+        SessionObject* owner() const;
 
 protected:
        virtual int set_state_2X (const XMLNode&, int version);
-       
+
        int       _pending_active;
        bool      _active;
        bool      _next_ab_is_active;
@@ -115,7 +128,8 @@ protected:
        ChanCount _configured_output;
        bool      _display_to_user;
        bool      _pre_fader; ///< true if this processor is currently placed before the Amp, otherwise false
-        void*     _ui_pointer;
+       void*     _ui_pointer;
+        SessionObject* _owner;
 };
 
 } // namespace ARDOUR