[MPlayer-dev-eng] [PATCH] Autodetect # of available CPUs

[Zuxy Meng]

Hi,

2007/7/1, Reimar Doeffinger <Reimar.Doeffinger at stud.uni-karlsruhe.de>:
> Hello,
> On Sun, Jul 01, 2007 at 04:12:45PM +0800, Zuxy Meng wrote:
> > The patch enables mplayer to detect the # of CPUs available to the
> > process, and sets lavdopts and lavcopts accordingly. Much of the code
> > is copied from x264 and I've tested it on Windows, Linux and SunOS.
>
> Since using threads affects encoding quality and debugging

Advanced users can always force a single-threaded run:-)

> and this kind
> of code also means lots of ugly OS-specific code

Well I hate this too but I don't know a more elegant way to do this.
If the only threading library mplayer will ever use is pthread, then
maybe pthread_num_processors_np can do the job, but is that function
always available when HAVE_PTHREAD?

> I don't really find it
> desirable.

By whom?:-) Actually x264 and xvid have already done this.

-- 
Zuxy
Beauty is truth,
While truth is beauty.
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