Hi Guys
I am playing with Vala with a view to presenting information about it at
our companies developer conference in a couple of weeks. With this in
mind I am trying to build up a test application that shows video
playback using GStreamer. I am having problems with the following code:
private Element createVideoBin() {
var bin=new Bin("videobin");
var queue=ElementFactory.make("queue","queue");
var sink=ElementFactory.make("autovideosink","videosink");
var ghostPad=new GhostPad("sink",queue.get_pad("sink"));
bin.add_many(queue,sink);
queue.link(sink);
bin.add_pad(ghost);
return(bin);
}
When attempting to use the returned bin, I get a segfault. This is
because (I think, on examining the generated C code) the elements are
being unrefd before the bin is returned. I am sure this is not supposed
to happen.
I get a number of error messaged when running the app:
(mystreamer:16361): GStreamer-CRITICAL **:
Trying to dispose of object "videosink", but it still has a parent
"videobin".
You need to let the parent manage the object instead of unreffing the
object directly.
I am assuming this is because I need to inform the code that I wish to
transfer ownership of the objects to the 'Bin', but how do I do this,
and is there a way that this can be picked up by the compiler to prevent
this type of problem?
Cheers
Matt
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