[Michael Roitzsch <amalthea@fr...>]

I did some work on the dxr3 plugins again. Enclosed is a patch against 
current cvs which fixes the following issues:

* make dxr3 work again by updating to current video_out interface
* fix some problems when switching from non-mpeg content (e.g. the xine
  logo) to mpeg content
* handle situations when video_out tells the dxr3 decoder to skip frames

The last point is the most problematic one. Basically, when playing 
mpeg content, the dxr3 decoder plugin is unable to skip frames, since 
we are feeding the card with a consecutive mpeg stream of which we 
can't take single frames out.
So my soultion here is to adjust vpts_offset of metronom via the lately 
introduced metronom option so that video_out doesn't want us to skip 
frames any more. The problem with this solution is that when the dxr3 
decoder adjusts vpts_offset to its own needs, the audio_out would turn 
it back. Therefore I had to introduce a new metronom option which, when 
set, only allows positive adjustments to vpts_offset. The corresponding 
patch to metronom is attached (warning: the dxr3 patch results in 
compilation errors without it).
I would appreciate comments on my work. If you think, my solution is 
clean enough I would even like to see it included into cvs before the 
release of 0.9.9. I have done some testing with it and for me, the dxr3 
works better than ever before. All syncing problems are gone.

Michael Roitzsch