Partial support for message/value ports and the message context.

This use case now works:
 - Add an event input and the "print" plugin from imum.lv2 to ingen
 - Connect the event input to the input of "print"
 - Hook Ingen up to JACK and play some MIDI events
   (or get events to the print plugin from anywhere else)
 - The "print" plugin will print the received events to the console
   in the message context (i.e. the audio thread is realtime safe)


git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@2281 a436a847-0d15-0410-975c-d299462d15a1

1 files changed, 14 insertions, 0 deletions

diff --git a/src/engine/LV2EventBuffer.cpp b/src/engine/LV2EventBuffer.cpp
index 3f11790e..20df73c4 100644
--- a/src/engine/LV2EventBuffer.cpp
+++ b/src/engine/LV2EventBuffer.cpp
@@ -120,6 +120,20 @@ LV2EventBuffer::get_event(uint32_t* frames,
 }
 
 
+/** Get the object currently pointed to, or NULL if invalid.
+ */
+LV2_Object*
+LV2EventBuffer::get_object() const
+{
+	if (lv2_event_is_valid(&_iter)) {
+		uint8_t* data;
+		LV2_Event* ev = lv2_event_get(&_iter, &data);
+		return LV2_OBJECT_FROM_EVENT(ev);
+	}
+	return NULL;
+}
+
+
 /** Append an event to the buffer.
  *
  * \a timestamp must be >= the latest event in the buffer.