Converting from YUV420 to NV12 format with OpenCL acceleration

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Hello folks,

I wonder if the function/method YUV2RGB_NVx() in https://github.com/Itseez/opencv/blob... does indeed convert YUV420 to NV12 or it just converts to RGB. It looks to me as the function converts YUV to RGB but I hope I'm proven wrong on that. Hence my post here.

If I'm right about my previous suggestion, does OpenCV have OpenCL acceleration for converting from YUV420 to NV12?

Thanks :-)