Use DXGI/D3DFMT 16bit pixel format to compatible with 12bit Y212/XV36
since there is no 12bit pixel defined in D3D11/D3D9.
Fix cmdline on Windows:
$ ffmpeg.exe -hwaccel qsv -init_hw_device qsv:hw,child_device_type=
{d3d11, dxva2} -i input_12bit.bin -f null -
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Fei Wang <fei.w.wang@intel.com>
Signed-off-by: Paul B Mahol <onemda@gmail.com>