[maemo-developers] using gstreamer in a hildon control panel applet

[From: Markku Vire]

Hi,

For some reason you seem to get wrong GTK+ theme in the spawned process.
This is likely some kind of environment variable issue. Are you passing
custom/somehow modified environment to the child? You can try to launch
the child through run-standalone.sh script and check if it makes any
difference.

-Markku-

Brandt, Todd E wrote:
> How would I ensure that any dialogs that I spawn in the child process
> take on the hildon-desktop settings though? I already have two control
> panel shortcuts that launch separate processes but both spawn dialogs
> with different colors, fonts, and sizes than they would if they were
> spawned in the library.
> 
> -----Original Message-----
> From: Markku Vire [mailto:markku.vire at movial.fi] 
> Sent: Wednesday, October 03, 2007 12:44 AM
> To: Brandt, Todd E
> Cc: maemo-developers at maemo.org
> Subject: Re: using gstreamer in a hildon control panel applet
> 
> 
> Hi,
> 
> Many Maemo applications are actually multi-threaded, since async
> operations within GnomeVFS use threads internally.
> 
> Anyway, using GStreamer in control panel applet sounds dangerous. This
> is because gstreamer cannot be unloaded cleanly (when execute-function
> returns, your module is unloaded and gstreamer is unloaded as well).
> Basically only very simple libraries (such that don't modify the main
> process' memory) can be unloaded.
> 
> Perhaps you can implement your applet as a separate process and the
> execute function of the applet just launches the child and waits it to
> finish?
> 
> -Markku-
> 
> Brandt, Todd E wrote:
>> Hi, I having a problem with hildon-control-panel and was wondering if
>> someone could help me out?
>>
>> Basically, I have a sound applet that sets up the audio devices for
> the
>> system, and it's designed as a library which is pulled up by the
>> controlpanel process. It requires gstreamer to work, and the gstreamer
>> documentation tells me that I have to either call gst_init or
>> g_threat_init() *before* any other glib functions are called. But by
> the
>> time my execute function is called, it's too late.
>>
>> Is there a way to initialize gstreamer from a hildon cp applet? Or do
> I
>> have to patch hildon-control-panel to call gst_init in its main
>> function?
>>