[VDPAU] How is supposed to provide the VdpPresentationQueueTargetCreateX11 func

[José Hiram Soltren]

Hi Emil,

On 02/07/2014 07:45 AM, Emil Velikov wrote:> On 07/02/14 07:59, Rémi
Denis-Courmont wrote:
>>    Hello,
>>
>> On Fri, 07 Feb 2014 02:16:22 +0000, Emil Velikov
>> <emil.l.velikov at gmail.com>
>> wrote:
>>>  - Then the documentation continues with the typedef of
>>> VdpPresentationQueueTargetCreateX11 but dose not indicate, who should
>>> provide the function or what it's actual name should be.
>>
>> That function is obtained from VdpGetProcAddress like the other ones. The
>> libvdpau frontend has no clue how to backend-specific render GPU surfaces
>> to X11. This must be provided by the backend of course.
>>
> Hmm... now it makes more sense.
>
>>> From a quick search I did not find even a single user of the latter,
>>> that could provide some clarity on the subject.
>>
>> I know it's used in VLC, and a quick search show it is used by gst-vdpau
>> and DirectFB as well. I believe it is used in mplayer too.

Yes, please have a look at the mplayer source, specifically libvo/vo_vdpau.c.
This code initializes the vdp_presentation_queue_target_create_x11 function
pointer in win_x11_init_vdpau_procs(), and uses it in
win_x11_init_vdpau_flip_queue().

The mplayer example is the most clear example of VDPAU usage we have. Note that
we developed vo_vdpau.c in tandem with the initial VDPAU implementation effort.

Thanks,
--José

> Seems like I would need to freshen up those "search" skills of mine.
>
> Thank for the quick reply Rémi
>
> Regards,
> -Emil
>
>> Regards,
>>
>
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