Re: 回复： The Phonon Backend Development.

[Ian Monroe]

2008/7/25 启宇 黄 <cheeray_7 at yahoo.com.cn>:
> Hi, Monroe
>
> Thanks for your help.
>
> "Bellagio uses gstreamer ?  "
> Bellagio is a media framework abiding by <<OpenMax IL Spec.>>.
> Its position and function in application development is like Gstreamer, I
> think.
>
> The web sites http://www.khronos.org/openmax/  &
> http://omxil.sourceforge.net/
> have more introductions to Bellagio.
>
> There are two questions I have had until now ( in Gstreamer backend ) :
>
>
>
> 1.  In the source of Gstreamer backend, some bins are created in
> "mediaobject :: createPipeline" ,
>
>      and another is created in "AudioOutput::AudioOutput". How does the
> "createPath" link the two parts?
>
>
>
> 2. The Bellagio uses the multi-thread technology( pthread ). When an
> application is developed
>
>     with Bellagio APIs, you should call some APIs to process the threads.
> But I find that
>
>     it isn't compatible with Qt framework, when I add the APIs into Phonon
> source.
>
>     Why is the Gstreamer so compatible with Qt ?  The reason maybe Gstreamer
> using the
>
>     "g_signal" is similar to Qt "signal/ slot ". Is that right ?

No, you should be able to write a phonon backend for any sort of engine.

Seems like your getting confused looking at the phonon-gstreamer
backend, look at the phonon-xine.