How to implement videooverlay interface in kmssink

[Jacob Chen]

Hi,

2017-06-26 22:13 GMT+08:00 Nicolas Dufresne <nicolas at ndufresne.ca>:

> Hi Daniel,
>
> is there a clean way to ask a DRM driver if it scales or not ?
>
> regards,
> Nicolas
>
> Le lundi 26 juin 2017 à 09:44 +0200, Víctor M. Jáquez L. a écrit :
> > On 06/25/17 at 02:57pm, Nicolas Dufresne wrote:
> > > This interface only make sense for DRM driver that can scale. Then
> > > it's
> > > just a matter of implementing a refresh independent of upstream
> > > caps.
> > > Set_render_rectangle is not expected to depend on renegotiation.
> >
> > A bit off-topic: I wonder if there is DRM capability to query if the
> > driver
> > supports scaling, rather than the trial-and-error we have now.
>
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>
We have write a kmssink in x11, maybe it could help you.
https://github.com/rockchip-linux/gstreamer-rockchip/tree/master/gst/rkximage

We also have been writing a videooverlay support kmssink  for none-x11 use.
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