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, 17 insertions, 5 deletions

diff --git a/src/server/events/CreateBlock.cpp b/src/server/events/CreateBlock.cpp
index 231df4e2..a43a8bf0 100644
--- a/src/server/events/CreateBlock.cpp
+++ b/src/server/events/CreateBlock.cpp
@@ -29,6 +29,7 @@
 #include "PluginImpl.hpp"
 #include "PortImpl.hpp"
 #include "PreProcessContext.hpp"
+#include "LV2Block.hpp"
 
 namespace Ingen {
 namespace Server {
@@ -118,11 +119,22 @@ CreateBlock::pre_process(PreProcessContext& ctx)
 		PluginImpl* const plugin = _engine.block_factory()->plugin(prototype);
 		if (!plugin) {
 			return Event::pre_process_done(Status::PROTOTYPE_NOT_FOUND, prototype);
-		} else if (!(_block = plugin->instantiate(*_engine.buffer_factory(),
-		                                          Raul::Symbol(_path.symbol()),
-		                                          polyphonic,
-		                                          _graph,
-		                                          _engine))) {
+		}
+
+		// Load state from directory if given in properties
+		LilvState* state = NULL;
+		Resource::Properties::iterator s = _properties.find(uris.state_state);
+		if (s != _properties.end() && s->second.type() == uris.forge.Path) {
+			state = LV2Block::load_state(_engine.world(), s->second.ptr<char>());
+		}
+
+		// Instantiate plugin
+		if (!(_block = plugin->instantiate(*_engine.buffer_factory(),
+		                                   Raul::Symbol(_path.symbol()),
+		                                   polyphonic,
+		                                   _graph,
+		                                   _engine,
+		                                   state))) {
 			return Event::pre_process_done(Status::CREATION_FAILED, _path);
 		}
 	}