Hi,
2008/11/14 Spencer, Matthew <[EMAIL PROTECTED]>:
> 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);
> }
bin.add_many is the problem because the c function takes the
ownership, but the bindings don't do it. Just use bin.add for every
element as a workaround...
Gr,
Thijs
> 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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