Rendering Byte Array Image Data to CEGUI Window

[sluburob]

Hello,
I'm new to CEGUI but i love it.
now i want to recode one of my aplications.
This Application produces Byte Arrays with Picture Data.
Actualy this is Video Data. so 25 times a second or more the Byte Array changes and should be rendered as CEGUI Window Background.
Is there any Possibility to do this in a simple way?

The data inside the Byte Array is YCbCr 4.2.2 but can be Converted.
Till now i only found how to render Images from File.

Thanks for the Help Guys.