Ffmpeg with GPUDirect support

I am looking at Using FFmpeg with NVIDIA GPU Hardware Acceleration :: NVIDIA Video Codec SDK Documentation and trying to figure out if ffmpeg supports GPU Direct.

I know that GPUDirect can be used to do cudaMemAlloc calls which give pointers to frames in GPU Memory… I was wondering if there was a tie-in on the nvenc implementation (I realize it only works on Quadro and server-cards) so that the memory doesn’t need to be copied to the system then to the GPU? Realize nvidia technically doesn’t support ffmpeg.