Add plugin state saving

This only works with a server-side save, so the GUI now uses that if the
server is not running remotely, where "remotely" is defined as "via
TCP".  This isn't perfect, since running ingen via TCP locally is a
perfectly valid thing to do, but it will do for now.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/server/LV2Block.hpp b/src/server/LV2Block.hpp
index b8438d9e..b6be8ccf 100644
--- a/src/server/LV2Block.hpp
+++ b/src/server/LV2Block.hpp
@@ -48,9 +48,10 @@ public:
 
 	~LV2Block();
 
-	bool instantiate(BufferFactory& bufs);
+	bool instantiate(BufferFactory& bufs, const LilvState* state);
 
 	LilvInstance* instance() { return instance(0); }
+	bool          save_state(const std::string& dir) const;
 
 	BlockImpl* duplicate(Engine&             engine,
 	                     const Raul::Symbol& symbol,
@@ -69,7 +70,7 @@ public:
 
 	LilvState* load_preset(const Raul::URI& uri);
 
-	void apply_state(Worker* worker, LilvState* state);
+	void apply_state(Worker* worker, const LilvState* state);
 
 	boost::optional<Resource> save_preset(const Raul::URI&  bundle,
 	                                      const Properties& props);
@@ -79,14 +80,14 @@ public:
 	                     BufferRef   buf,
 	                     SampleCount offset);
 
+	static LilvState* load_state(World* world, const std::string& path);
+
 protected:
 	SPtr<LilvInstance> make_instance(URIs&      uris,
 	                                 SampleRate rate,
 	                                 uint32_t   voice,
 	                                 bool       preparing);
 
-	void load_default_state(Worker* worker);
-
 	inline LilvInstance* instance(uint32_t voice) {
 		return (LilvInstance*)(*_instances)[voice].get();
 	}