topic Imx8mp GUI overlay in i.MX Processors

Imx8mp GUI overlay

NagendraB — Thu, 30 Dec 2021 13:47:07 GMT

Hello

I am using imx8mplus (5.4.70) platform , for a specific requirement where the video overlay is required to play on GUI (consider a simple wayland app as GUI) , in this regards, I am trying to understand below poins , please let me know if there are update on below points/queries

1. the gstreamer wayland sink alpha property does not work ? is there any limitation ?

2. imx8mplus does not support overlaysink, (perhaps g2d to be used) is it so ?

3. How to overlay video on to user created wayland surface using g2d support ? (wayland subsurface or egl surface ? to be used ?)

4. is chroma key supported by g2d ?

Re: Imx8mp GUI overlay

Bio_TICFSL — Mon, 03 Jan 2022 14:13:22 GMT

Hello NagendraB,

1. Yes,imx-gst1.0-plugin has replaced the gstreamer1.0-plugins-imx.

In i.MX6 Family :Video render relys on G2D, not DRI

In i.MX8 Family:Video render relys on DRI,due to Wayland using DRI

The wayland alpha does not work on MX8

2. and 3. Yes it support:

using multi buffer to avoid tearing.

Limitation:

Only tested 1080P resolution, cause i only made 1080P transparent effect buffer.

Only tested USB camera.

USage Cmd usage:

imx8-camera-to-overlay -i /dev/video8 -f YUYV -S 1920,1080 -M imx-drm -p 54:30 -F XB24 -b 5 -e g2d

4 Not support on chroma.

Regards