[gst-devel] stopping video sets the background to black -- can I change this color?

[Erik Blankinship]

I opened this bug on this issue:
https://bugzilla.gnome.org/show_bug.cgi?id=635800

<https://bugzilla.gnome.org/show_bug.cgi?id=635800>Tonight with the help of
friendly folk on irc I was able to compile xvimagesink with the changes I
think are needed. (I am on fedora 11)

I seem to have created two files:

   - libgstxvimagesink.la
   - libgstxvimagesink_la-xvimagesink.lo

Is that it?  I thought I compiling would create a .so file..

If it worked, I have a followup question:
I would like to use my newly compiled version of xvimagesink in a pygst
project I distribute on the OLPC XO laptops (Which may not get upgraded
gstreamer for a long time).  How do I reference my bundled xvimagesink files
in my pipelines?

Thank you.  It is fun and educational to learn about the gstreamer build
process.


On Mon, Nov 1, 2010 at 5:21 PM, Stefan Kost <ensonic at hora-obscura.de> wrote:

> Am 31.10.2010 21:18, schrieb Erik Blankinship:
> >
> >
> > On Sun, Oct 31, 2010 at 11:07 AM, Stefan Kost <ensonic at hora-obscura.de
> > <mailto:ensonic at hora-obscura.de>> wrote:
> >
> >     hi,
> >
> >     Am 31.10.2010 03:55, schrieb Erik Blankinship:
> >     > When I set my pipeline to state null (i.e. pressing stop), my
> xvimagesink (or
> >     > ximagesink) changes to the color black.
> >     >
> >     > Can I set this color?
> >     >
> >
> >     No, you would need to turn off some things on xvimagesink and manage
> them
> >     yourself. I don't remember exactly which one: "autopaint-colorkey",
> >     "handle-expose" - you could check the source of the plugin.
> >
> >
> > Just toggling those parameters had no effect (except, sometimes the video
> > wouldn't show up at all).  And just setting "colorkey" didn't  seem to do
> > anything either (but I was real excited for a minute hoping it would
> work).
>
> Since we implemented the "colorkey" property, only a few drivers actually
> do
> something on it. Anyway that not what you where looking for, as the
> colorkey is
> a color you *don't* want to see.
>
> >
> > Is the idea to listen for x expose events and hide the component?
>
> I said, please check the source: gst_xvimagesink_xwindow_clear() is
> painting the
> window black when going from READY_TO_NULL. It's something we should make
> optional I think (and remove at some point). Its also inconsistent as apps
> would
> need to make their video window black initially if they want it to be
> black.
> File a bug?
>
> Stefan
>
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