[MPlayer-cygwin] directsound driver

[Sascha Sommer]

> Sascha Sommer writes:
> > On Friday 20 August 2004 17:43, Diego Biurrun wrote:
> > > Sascha Sommer writes:
> > > > Attached is an ao dsound that plays audio and video files fine for
me.
> > >
> > > This version works perfectly for me on some files, but on others
> > > playback is jerky and many frames are dropped on a >2GHz P4.  I'm not
> > > including any logs or samples since this should be very easy to
> > > reproduce.
> > >
> > > CPU usage appears to be higher with -ao dsound.
> > >
> >
> > Is the audio ok in case of the frame dropping?
>
> No.
>
> > If you also get this with the attached version increase MIN_CHUNK_SIZE
>
> Yes, it happens with the attached version as well.  I increased
> MIN_CHUNK_SIZE to 32768, this helped.
>

Do you really need to go that high? Or is it just some random (same as
BUFFERSIZE) value?
4096 is definitly ok here. Tryed with many files and a dvd.

> > Also try if autosync 100 improves the framedropping.
>
> It helps.
>
> With both increased MIN_CHUNK_SIZE and -autosync 100 it works mostly,
> but there are still occasional jumps and a bit of framedropping.
>

I hope you are not playing mpeg1/2 videos with the "updated" libmpeg2.
It gives cherky video for me.
The sound is ok with the version. Even sync is almost 100% perfect (without
autosync). So maybe
the soundcard drivers are playing games with us again.
I would really be interested in more test.
Attached another version with some cleanup and seeking fix.
I will also upload a directsound.zip to releases/win32-beta in the next few
minutes. So people who do not compile themselves
can test it, too.

Sascha

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