* Context extension work.

 * Better support for set_port_value on event ports.
 * Don't pop audio ports when clicking in event mode.
 * Clicking an event port in event mode will 'bang' the event port
   (example 'bang' plugin prints when it receives one).


git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@1534 a436a847-0d15-0410-975c-d299462d15a1

5 files changed, 48 insertions, 15 deletions

diff --git a/src/libs/engine/LV2Info.cpp b/src/libs/engine/LV2Info.cpp
index 4d934855..43dd014b 100644
--- a/src/libs/engine/LV2Info.cpp
+++ b/src/libs/engine/LV2Info.cpp
@@ -34,6 +34,8 @@ LV2Info::LV2Info(Ingen::Shared::World* world)
 	, event_class(slv2_value_new_uri(world->slv2_world, SLV2_PORT_CLASS_EVENT))
 	, _world(world)
 {
+	assert(world);
+
 	LV2_Event_Feature* ev_data = (LV2_Event_Feature*)malloc(sizeof(LV2_Event_Feature));
 	ev_data->lv2_event_ref = &LV2Info::event_ref;
 	ev_data->lv2_event_unref = &LV2Info::event_ref;
diff --git a/src/libs/engine/LV2Info.hpp b/src/libs/engine/LV2Info.hpp
index d7da8185..f4859ac7 100644
--- a/src/libs/engine/LV2Info.hpp
+++ b/src/libs/engine/LV2Info.hpp
@@ -47,6 +47,9 @@ public:
 	SLV2Value control_class;
 	SLV2Value audio_class;
 	SLV2Value event_class;
+	
+	Ingen::Shared::World& world()     { return *_world; }
+	SLV2World             lv2_world() { return _world->slv2_world; }
 
 	static uint32_t event_ref(LV2_Event_Callback_Data callback_data,
 	                          LV2_Event*              event);
diff --git a/src/libs/engine/LV2Node.cpp b/src/libs/engine/LV2Node.cpp
index d784f1d2..a3c20a95 100644
--- a/src/libs/engine/LV2Node.cpp
+++ b/src/libs/engine/LV2Node.cpp
@@ -198,6 +198,13 @@ LV2Node::instantiate()
 
 		if (direction == INPUT && data_type == DataType::CONTROL)
 		  ((AudioBuffer*)port->buffer(0))->set_value(def, 0, 0);
+		
+		SLV2Value pred = slv2_value_new_uri(info->lv2_world(),
+				"http://lv2plug.in/ns/dev/contexts#context");
+		SLV2Values contexts = slv2_port_get_value(plug, id, pred);
+		if (slv2_values_size(contexts) > 0) {
+			cout << "PORT HAS CONTEXT!" << endl;
+		}
 
 		_ports->at(j) = port;
 	}
diff --git a/src/libs/engine/OSCEngineReceiver.cpp b/src/libs/engine/OSCEngineReceiver.cpp
index dbdb388d..04352c2f 100644
--- a/src/libs/engine/OSCEngineReceiver.cpp
+++ b/src/libs/engine/OSCEngineReceiver.cpp
@@ -612,6 +612,12 @@ OSCEngineReceiver::_set_port_value_cb(const char* path, const char* types, lo_ar
 		size_t data_size = lo_blob_datasize(b);
 		void* data = lo_blob_dataptr(b);
 		set_voice_value(port_path, argv[2]->i, Atom(type, data_size, data));
+	} else if (!strcmp(types, "issN")) { // empty event (type only), all voices
+		const char* type = &argv[2]->s;
+		set_port_value(port_path, Atom(type, 0, NULL));
+	} else if (!strcmp(types, "isisN")) { // empty event (type only), specific voice
+		const char* type = &argv[3]->s;
+		set_voice_value(port_path, argv[2]->i, Atom(type, 0, NULL));
 	} else {
 		return 1;
 	}
diff --git a/src/libs/engine/events/SetPortValueEvent.cpp b/src/libs/engine/events/SetPortValueEvent.cpp
index f69ba9a3..90e66c1c 100644
--- a/src/libs/engine/events/SetPortValueEvent.cpp
+++ b/src/libs/engine/events/SetPortValueEvent.cpp
@@ -138,21 +138,36 @@ SetPortValueEvent::execute(ProcessContext& context)
 		}
 		
 		EventBuffer* const ebuf = dynamic_cast<EventBuffer*>(buf);
-		// FIXME: eliminate string comparisons
-		if (ebuf && _value.type() == Atom::BLOB
-				&& !strcmp(_value.get_blob_type(), "lv2_midi:MidiEvent")) {
-			const LV2Features::Feature* f = _engine.world()->lv2_features->feature(LV2_URI_MAP_URI);
-			LV2URIMap* map = (LV2URIMap*)f->controller;
-			const uint32_t type_id = map->uri_to_id(NULL, "http://lv2plug.in/ns/ext/midi#MidiEvent");
-			const uint32_t frames = std::max((uint32_t)(_time - context.start()), ebuf->latest_frames());
-			ebuf->prepare_write(context.start(), context.nframes());
-			// FIXME: how should this work? binary over OSC, ick
-			// Message is an event:
-			ebuf->append(frames, 0, type_id, _value.data_size(), (const uint8_t*)_value.get_blob());
-			// Message is an event buffer:
-			//ebuf->append((LV2_Event_Buffer*)_data);
-			_port->raise_set_by_user_flag();
-			return;
+
+		const LV2Features::Feature* f = _engine.world()->lv2_features->feature(LV2_URI_MAP_URI);
+		LV2URIMap* map = (LV2URIMap*)f->controller;
+		
+		// FIXME: eliminate lookups
+		// FIXME: need a proper prefix system
+		if (ebuf && _value.type() == Atom::BLOB) {
+			const uint32_t frames = std::max(
+					(uint32_t)(_time - context.start()),
+					ebuf->latest_frames());
+			
+			// Size 0 event, pass it along to the plugin as a typed but empty event
+			if (_value.data_size() == 0) {
+				cout << "BANG!" << endl;
+				const uint32_t type_id = map->uri_to_id(NULL, _value.get_blob_type());
+				ebuf->append(frames, 0, type_id, 0, NULL);
+				_port->raise_set_by_user_flag();
+				return;
+
+			} else if (!strcmp(_value.get_blob_type(), "lv2_midi:MidiEvent")) {
+				const uint32_t type_id = map->uri_to_id(NULL,
+						"http://lv2plug.in/ns/ext/midi#MidiEvent");
+
+				ebuf->prepare_write(context.start(), context.nframes());
+				// FIXME: use OSC midi type? avoid MIDI over OSC entirely?
+				ebuf->append(frames, 0, type_id, _value.data_size(),
+						(const uint8_t*)_value.get_blob());
+				_port->raise_set_by_user_flag();
+				return;
+			}
 		}