On Thu, 21 Feb 2002, [big5] ���s�� wrote:
> Coz I use a non-member mailbox last time, so I send it
> again by member mailbox
>
> Kevin Huang
>
> ===
>
> Hello everyone :
>
> I encounter a strange problem and can't figure out
> why. I have a ATI AiW r128 video card & his new Xv
> supported driver. When I use DVD player to play mpeg2
> file & move other window to clip the video window, the
> driver doesn't call StopVideo. But in it's VideoInit
> function, it sets flag VIDEO_OVERLAID_IMAGES as below
> :
>
> VAR[i].type |= XvWindowMask | XvVideoMask |
> XvStillMask | XvImageMask;
> VAR[i].name = "R128";
>
> VAR[i].flags=VIDEO_OVERLAID_IMAGES|VIDEO_CLIP_TO_VIEWPORT;
>
> According to XFree86 X server "New Design"(DRAFT): The
> XFree86 X Video Extension(Xv) Device Dependent Layer
> chapter, it mentions that if we set
> VIDEO_OVERLAID_IMAGES, StopVideo will be called
> whenever the destination gets clipped or moved so that
> the image can be left up until then.
The docs are old. Stop won't actually get called with
a simple clip change. Stop will only get called on a move or
when the cliplist changes such that an exposure is generated.
Even then, the StopVideo function can be ignored by the driver
in that case because the "cleanup" flag isn't set.
What most of the drivers do in that case is make note that
Stop was called and will stop it in a few seconds if there
are no PutImage calls following.
MArk
_______________________________________________
Xpert mailing list
[EMAIL PROTECTED]
http://XFree86.Org/mailman/listinfo/xpert
