[MPlayer-dev-eng] Writing a brand new D3D video output to fix Vista Aero disabling

[Zuxy Meng]

Hi,

2008/5/30 Georgi Petrov <gogothebee at gmail.com>:
> Hello,
>
> I want to write a D3D video output for MPlayer and contribute to the
> best player ever.
>
> I'm experimenting with Vista lately and I found that the old
> incompatibility between Aero and Direct X video output isn't fixed.
> Don't stop reading, I'm willing and WILL help all of you. After a
> little bit research I found that it is not possible (correct me if I'm
> wrong) to use Direct Draw video overlay AND have Aero in the same
> time. In other players like VLC and Media Player Classic the problem
> is fixed by using Direct 3D as output interface. I'm willing to write
> D3D video output for MPlayer if there is no other way around this
> issue.
>
> Sure, you can use gl/gl2 as a workaround, but we all know that they
> require software colorspace conversion into RGB32 first, which is
> slooow :)
> I think that the only way to have YV12/YUY2 output and Aero at the
> same time is to use Direct 3D.
>
> There is a patch for MPlayer's "directx" (Direct Draw) video output by
> Gianluigi Tiesi here:
>
> http://www.cccp-project.net/nichorai/mplayer-patches/mplayer-xx_vista_aero.diff
>
> All it does is to actually add the flag PFD_SUPPORT_COMPOSITION in
> Direct Draw flags, but this doesn't really help. I think this never
> worked. I just tried a mingw compile with the flag added and it didn't
> work.
>
> I tried VLC's output modes and observed the same thing I'm talking about:
> 1. Direct X video output disables Aero
> 2. Direct 3D video output doesn't
>
> So - I'm willing to look at the source code of vo_directx.c in MPlayer
> and in both DirectX/D3D sources of VLC and figure out how to come with
> vo_d3d.c for MPlayer. I don't have much free time, as I still study
> and work, but consider this offer a real one.
>
> I'm sure that when this issue gets resolved, MPlayer (and all of its
> frontends) will gain even more popularity on Vista and this issue is a
> real showstopper for MPlayer 1.0!
>
> I'm open to any suggestions!

That would be really wonderful! I wanted to do this long long ago but
never had enough time, not to mention that I don't have much D3D
knowledge either.

BTW can u pls enlighten me the difference between D3D and VMR? I once
thought the latter was intended to replace overlay in DDraw but then I
checked VLC D3D code and found it didn't mention VMR at all

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