Re: [Banshee-List] GskScreen and glib value on gstreamer#

[olivier dufour <olivier duff gmail com>]

I have ever sent an email to slomo who was in charge on this binding...

Olivier Dufour

On Sun, Jun 12, 2011 at 7:22 PM, Andres G. Aragoneses <knocte gmail com> wrote:

Hey olivier, my guess is that GStreamerSharp's GLib binding is less mature than the GtkSharp one. Can you ask them if it's possible that they switch to depending to the latter? I guess there is a mailing list for GStreamerSharp, but if not, I would advice GStreamer mailing list.

On 6/11/2011 02:29 PM, olivier dufour wrote:

found the issue.
It come from the fact that gstreamer have a small glib binding and gtk too.
Screen need to be used from Gstreamer# GLib for Video stuff but it come
from gtk# Glib binding.
its have not the same namespace. So we have Screen ctor with GLib.Value
as parameter but not a ctor with Gst.GLib.Value as parameter.

So:
1) Why we have 2 bindings for GLib...
2) Can we switch to gtk GLib binding from Gtk in Gstreamer# ?

I have try to set my own Screen in Gstreamer#.

So I need a bit of explaination to know why we have this situation to
know how get further...

Olivier Dufour


On Sat, Jun 11, 2011 at 11:26 AM, olivier dufour
<olivier duff gmail com

<mailto:olivier duff gmail com>> wrote:

   Hello,

   I have an issue with video feature in gst# backend because of an
   exception:
   This exception comming from the fact that GdkScreen is not
   registered in Glib Type.
   In fact gstreamer bring some GLib type with it but not the one from
   Gdk and do not want to make gstreamer inherit from gdk sharp binding
   to have Screen.


   Marshaling sync-message signal
   Exception in Gtk# callback delegate
      Note: Applications can use
   Gst.GLib.ExceptionManager.UnhandledException to handle the exception.
   System.Exception: Unknown type GdkScreen
      at Gst.GLib.Value.ToRegisteredType () [0x000a9] in
   /home/dufoli/src/gstreamer-sharp/gstreamer-sharp/glib-sharp/Value.cs:376

      at Gst.GLib.Value.get_Val () [0x0034c] in
   /home/dufoli/src/gstreamer-sharp/gstreamer-sharp/glib-sharp/Value.cs:531

      at Gst.GLib.SignalClosure.MarshalCallback (IntPtr raw_closure,
   IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr
   invocation_hint, IntPtr marshal_data) [0x0010e] in
   /home/dufoli/src/gstreamer-sharp/gstreamer-sharp/glib-sharp/SignalClosure.cs:165

       at
   Gst.GLib.ExceptionManager.RaiseUnhandledException(System.Exception
   e, Boolean is_terminal) in
   /home/dufoli/src/gstreamer-sharp/gstreamer-sharp/glib-sharp/ExceptionManager.cs:line
   58
       at Gst.GLib.SignalClosure.MarshalCallback(IntPtr raw_closure,
   IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr
   invocation_hint, IntPtr marshal_data) in
   /home/dufoli/src/gstreamer-sharp/gstreamer-sharp/glib-sharp/SignalClosure.cs:line
   182
       at Gst.Bus.gst_bus_sync_signal_handler(IntPtr , IntPtr , IntPtr )
       at Gst.Bus.SyncSignalHandler(Gst.Message message) in
   /home/dufoli/src/gstreamer-sharp/gstreamer-sharp/generated/Bus.custom:line
   5
       at Banshee.GStreamerSharp.VideoManager.<Initialize>m__5(Gst.Bus
   bus, Gst.Message message) in
   /home/dufoli/src/banshee/src/Backends/Banshee.GStreamerSharp/Banshee.GStreamerSharp/VideoManager.cs:line
   91
   ...
   Olivier Dufour

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