How to implement videooverlay interface in kmssink

[jared Hu]

I’m trying to implement videooverlay interface in kmssink.

My solution is like ximagesink. In set_render_rectangle, I record this user input size and position. In expose, I send a renconfigure event upstream to strat a negotiation. In get_caps, return the fix size caps to peer plugin. This can work when playing. But in pause state, I can not show the resize frame immediately because the caps renegotiate will not start until next buffer push down.

Does anyone has some advice for me to solve this problem.

[Nicolas Dufresne-5]

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.

Le 23 juin 2017 1:59 AM, "jared Hu" <[hidden email]> a écrit :

I’m trying to implement videooverlay interface in kmssink.

My solution is like ximagesink. In set_render_rectangle, I record this user
input size and position. In expose, I send a renconfigure event upstream to
strat a negotiation. In get_caps, return the fix size caps to peer plugin.
This can work when playing. But in pause state, I can not show the resize
frame immediately because the caps renegotiate will not start until next
buffer push down.

Does anyone has some advice for me to solve this problem.



--
View this message in context: http://gstreamer-devel.966125.n4.nabble.com/How-to-implement-videooverlay-interface-in-kmssink-tp4683510.html
Sent from the GStreamer-devel mailing list archive at Nabble.com.
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

[Victor Jaquez]

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.

>
> Le 23 juin 2017 1:59 AM, "jared Hu" <[hidden email]> a écrit :
>
> > I’m trying to implement videooverlay interface in kmssink.
> >
> > My solution is like ximagesink. In set_render_rectangle, I record this user
> > input size and position. In expose, I send a renconfigure event upstream to
> > strat a negotiation. In get_caps, return the fix size caps to peer plugin.
> > This can work when playing. But in pause state, I can not show the resize
> > frame immediately because the caps renegotiate will not start until next
> > buffer push down.
> >
> > Does anyone has some advice for me to solve this problem.
> >
> >
> >
> > --
> > View this message in context: http://gstreamer-devel.966125.
> > n4.nabble.com/How-to-implement-videooverlay-interface-in-kmssink-
> > tp4683510.html
> > Sent from the GStreamer-devel mailing list archive at Nabble.com.
> > _______________________________________________
> > gstreamer-devel mailing list
> > [hidden email]
> > https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel
> >

> _______________________________________________
> gstreamer-devel mailing list
> [hidden email]
> https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

[Nicolas Dufresne-5]

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.

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

[Jacob Chen]

Hi, 

2017-06-26 22:13 GMT+08:00 Nicolas Dufresne <[hidden email]>:

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.

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

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.

_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel

[jared Hu]

Hi Jacob,

Thanks for you advice, I notice that the plugin you propose is the combination of ximagesink and kmssink. I have checked ximagesink, when in pause state, resize only can show cropped frame. I'm afraid that this cannot solve my problem.

Thanks a lot again.

[jared Hu]

Hi Nicolas,

ximagesink also use this method to implement video overlay interface. And I have tried ximagesink. It cannot show right size frame but cropped when in pause state if I resize the xwindow.

[Nicolas Dufresne-5]

Le mercredi 28 juin 2017 à 19:42 -0700, jared Hu a écrit :
> ximagesink also use this method to implement video overlay interface. And I
> have tried ximagesink. It cannot show right size frame but cropped when in
> pause state if I resize the xwindow.

ximagesink does not support scaling, xvimagesink does. for kmssink it
depends on the driver.

I'm not sure why X is relevant in this thread, maybe I missed something
?

Nicolas
_______________________________________________
gstreamer-devel mailing list
[hidden email]
https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel