[mythtv] [mythtv-commits] Ticket #2676: Video skips badly w/ XvMC when OSD is up

[Daniel Kristjansson]

On Fri, 2007-04-20 at 14:48 +1000, Alan Calvert wrote:
> Johan wrote:
> > Daniel wrote:
> >>  The XvMC with nVidia cards is buffer starved when using XvMC OSD. There
> >>  isn't much we can do, except use another OSD rendering method. We have the
> >>  chromakey OSD for 4xxx & 5xxx cards and for later cards you can use the
> >>  XvMC OpenGL OSD renderer with SVN head if you compile with "--xvmc-
> >>  lib=XvMCNVIDIA --enable-xvmc-opengl".
> > 
> > On current SVN I try to compile with those options and I get:
> > 
> > ../../libs/libavcodec/libmythavcodec-0.20.so: undefined reference to
> > `XvMCLoadQMatrix'
> > ../../libs/libavcodec/libmythavcodec-0.20.so: undefined reference to
> > `XvMCBeginSurface'
> > ../../libs/libmythtv/libmythtv-0.20.so: undefined reference to
> > `XvMCPutSlice2'
> > 
> > I have the NVidia 9755 driver installed, and don't have a problem with
> > normal XvMC compile.
> > 
> > A distclean on my source tree yields the same result - what am I missing?
> > 
> > Johan.
> 
> I hit the same issue yesterday. As far as I can tell, the three functions in
> question simply don't exist in Nvidia 9755. XvMCLoadQMatrix and XvMCBeginSurface
> appear to used in libs/libavcodec/xvmcvldvideo.c to simply check a status and
> log the result. XvMCPutSlice2 in libs/libmythtv/videoout_xv.cpp also appears to
> be just a status check. Since the functions didn't appear to exist, I simply 
> commented out the status checks, and the build completed ok. Fixing it "properly"
> might involve a little more though.

I think this is a ./configure issue, vld should be disabled if
you use --enable-xvmc-opengl, I'll fix this today.

-- Daniel