Petri Hintukainen pushed to branch master at VideoLAN / libbluray
Commits:
9353a3c0 by Shaya Potter at 2026-01-16T17:22:07+00:00
Send MediaPresentedEvent after StartEvent in BDHandler
Some BD-J discs rely on receiving org.davic.media.MediaPresentedEvent
to trigger menu visibility. Without this event, the disc's xlet never
makes the menu visible even though the background video is playing.
The DAVIC MediaPresentedEvent indicates "media data begins to be presented"
and should be sent when the player transitions to the Started state and
media is actually being rendered to the screen.
This was discovered with a disc where:
1. Background video playlist started playing correctly
2. StartEvent was sent to the xlet's ControllerListener
3. But the main menu remained invisible
4. Analysis of the decompiled xlet showed it was waiting for
MediaPresentedEvent to trigger an UpdateStateTask that would
eventually call setVisible(true) on the menu components
The fix sends MediaPresentedEvent immediately after StartEvent when
the player enters the Started state (from Prefetched). It is NOT sent
in the default case (when start() is called on an already-Started player)
since media is already being presented.
- - - - -
1 changed file:
- src/libbluray/bdj/java/org/videolan/media/content/BDHandler.java
Changes:
=====================================
src/libbluray/bdj/java/org/videolan/media/content/BDHandler.java
=====================================
@@ -50,6 +50,8 @@ import javax.media.TimeBase;
import javax.media.TransitionEvent;
import javax.media.protocol.DataSource;
+import org.davic.media.MediaPresentedEvent;
+
import javax.tv.locator.Locator;
import javax.tv.service.selection.ServiceContentHandler;
@@ -522,6 +524,8 @@ public abstract class BDHandler implements Player,
ServiceContentHandler {
if (error == null) {
state = Started;
notifyListeners(new StartEvent(this, Prefetched, Started,
Started, at, getMediaTime()));
+ // Send MediaPresentedEvent after StartEvent - some discs rely
on this to show menus
+ notifyListeners(new MediaPresentedEvent(this));
} else {
notifyListeners(error);
return false;
View it on GitLab:
https://code.videolan.org/videolan/libbluray/-/commit/9353a3c0a7493457aed7b8d3a083532939e6c17e
--
View it on GitLab:
https://code.videolan.org/videolan/libbluray/-/commit/9353a3c0a7493457aed7b8d3a083532939e6c17e
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