[gstreamer-bugs] [Bug 538656] ximagesink support for autofill property

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: HEAD CVS

tzicatl at gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tzicatl at gmail.com




------- Comment #1 from tzicatl at gmail.com  2008-06-16 19:41 UTC -------
Nieto, Noe M schrieb:
> Hi everybody,
> 
>  
> 
> I am writing an application where the user should be able to draw 
> (with the mouse) a rectangle on a playing video window (for now it is 
> an ximagesink).

Thats not so easy. Curretly xvimagesink does autofill-colorkey. That is it
fills the drawable with the colorkey so that you see the video. Please file an
enhancement request, so that xvimagesink supports a property to turn off
autofill and another to tell you about the colorkey. Then you can fill the
drawable yourself with the colorkey and paint your rectangle in a different
color over it. The video will be seen where the colorkey is visible.

Stefan
> 
>  
> 
> I try the following but I see nothing drawing on the screen…
> 
> ### CONFIGURE PIPELINE TO CATCH SYNC MESSAGES
> 
> bus = self.Pipeline.get_bus()
> 
> bus.add_signal_watch()
> 
> bus.enable_sync_message_emission()
> 
> bus.connect('message', self.on_message)
> 
> bus.connect('sync-message::element', self.on_sync_message)
> 
>  
> 
>  
> 
> #############
> 
> ## Tell ximagesink to draw into the draw area that I give it, not in 
> it’s own …
> 
>     def on_sync_message(self, bus, message):
> 
>       if message.structure is None:
> 
>             return
> 
>       message_name = message.structure.get_name()
> 
>       if message_name == "prepare-xwindow-id":
> 
>             imagesink = message.src
> 
>             imagesink.set_property("force-aspect-ratio", True)
> 
>             imagesink.set_xwindow_id(self.DrawingArea.window.xid)
> 
>  
> 
> #############
> 
> ## Now, on the expose event of the drawing area, paint the rectangle 
> according to user input (mouse)
> 
> #############
> 
>     def on_DrawingAreaCamera_expose_event(self,widget,event):
> 
>         #if self.area_selection_now is True:
> 
>         context = widget.window.cairo_create()
> 
>         #widget.window.draw(context)
> 
>         context.rectangle(self.area_selection)
> 
>         context.set_source_rgb(1,0,0)
> 
>         context.stroke()
> 
>  
> 
>  
> 
> What is the right way to interact with ximagesink, so I can also draw 
> things on it’s drawable??
> 
>  
> 
> Regards
> 


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