[Libva] using libva video compression on system with no monitor

[rlandle at gdrs.com]

The staging branch of intel-driver compiled successfully against the staging branch of libva.

I can now run:

>>sudo vainfo --display drm 
with the correct results.

But I need to run as sudo, or with root privileges?

I suppose that is because we are opening the /dev/dri/card0 and /dev/dri is in the root group.

Do you have any suggestions on how use this without running as sudo or root?

Thanks,
Bob L.





-----Original Message-----
From: libva-bounces+rlandle=gdrs.com at lists.freedesktop.org [mailto:libva-bounces+rlandle=gdrs.com at lists.freedesktop.org] On Behalf Of rlandle at gdrs.com
Sent: Tuesday, August 14, 2012 9:48 AM
To: libva at lists.freedesktop.org
Subject: Re: [Libva] using libva video compression on system with no monitor

I see in the avcenc example there is a call to the va_init_display_args() function to force the name of the display to be drm

This function call does not appear to be in the avinfo test.

If I copy this function call into vainfo.c, recompile, and run 
>> vainfo --display drm

I see va_open_display_drm gets called.

I still cannot compile the intel-driver-1.0.15 with this version of libva.

Thanks,
Bob



-----Original Message-----
From: libva-bounces+rlandle=gdrs.com at lists.freedesktop.org [mailto:libva-bounces+rlandle=gdrs.com at lists.freedesktop.org] On Behalf Of rlandle at gdrs.com
Sent: Tuesday, August 14, 2012 9:14 AM
To: libva at lists.freedesktop.org
Subject: Re: [Libva] using libva video compression on system with no monitor

Haihao,
I git-cloned the staging branch and can see the addition of the ./test/common/va_display_drm.c 

It is clear to me that va_open_display_drm() will get called when DRM is an available display.
But am I supposed to configure libva with --enable-x11 off, so that this function is the only option?

The va_open_display_x11 function still gets called when I configure with the defaults (x11 on).  This gives me an error and va_open_display_drm() never gets called.

Also if I configure libva with --enable-x11 off I have problems building the intel-driver-1.0.15.

Do I need a newer intel driver library to support the raw-DRM capabilities of the libva?

Thanks,
Bob

-----Original Message-----
From: Xiang, Haihao [mailto:haihao.xiang at intel.com] 
Sent: Monday, August 13, 2012 11:11 PM
To: Robert J. Landle
Cc: libva at lists.freedesktop.org
Subject: Re: [Libva] using libva video compression on system with no monitor


The staging branch supports raw-DRM. With it, an user can use libva
without an X server.

Thanks
Haihao



> I was wondering if it was possible to use libva for gpu video
> compression/acceleration on intel HD3000 on a system with no monitor?
> 
> I have an fc-16 (linux 3.1) sytem in which I built the intel 2001Q4
> graphic package.
> 
> I can run vainfo successfully while I am plugged into the system with
> keyboard/mouse/monitor.
> 
>  
> 
> However when I ssh into the system an attempt to run vainfo I get the
> following error:
> 
>  
> 
> libva: VA-API version 0.32.0
> 
> Xlib:  extension "XFree86-DRI" missing on display "localhost:10.0".
> 
> libva: va_getDriverName() returns -1
> 
> vaInitialize failed with error code -1 (unknown libva error),exit
> 
>  
> 
> It must be possible to take advantage of the intel gpu video
> compression acceleration hardware on systems without a
> monitor/keyboard/mouse. No?
> 
> 
> 
>  
> 
> Thanks,
> 
> Bob
> 
> 
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