Re: [Vala] appsink binding in gstreamer
- From: august <august alien mur at>
- To: vala-list gnome org
- Subject: Re: [Vala] appsink binding in gstreamer
- Date: Tue, 28 Sep 2010 22:25:55 +0200
okay, I received some help from the IRC channel (thanks!) and here is
what I found:
To create the appsink object, you need to use the element factory and
cast it like this:
// not this.sink = AppSink() like you would think.
this.sink = (AppSink)ElementFactory.make ("appsink", "sink");
then, you can set the signals like so:
this.sink.new_preroll.connect(this.new_preroll);
this.sink.new_buffer.connect(this.new_buf_cb);
my problem now is how to deal with Gst.Buffers. Sorry if my questions
are elementary. I'm trying to learn vala, glib, gst all at once.
In my signal callback for new_buffer, I do this:
private void new_buf_cb( ) {
print("new buffer.\n");
//Gst.Buffer.replace(ref buffer,this.sink.pull_buffer() );
buffer = this.sink.pull_buffer();
this.queue_draw();
}
Can someone tell my why the app crashes when trying to assign the
pull_buffer() to my Buffer buffer?
I also tried to call replace on the buffer, but it won't compile.
Any hints?
chugging along -august.
I was talking with some folks about the faulty appsink bindings in
gstreamer on IRC last night.
I also found this online:
http://www.mail-archive.com/vala-list gnome org/msg05147.html
Any answers to those questions?
It seems you can't even create the AppSink object.
Is there another way to create it and set the signals using
ElementFactory ?
thanks -august.
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