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DM8168 rotate image

Hi group!

We're using a DM8168 based design using RDK 4.1.0.2. Our use case is based on the Multi Channel Hybrid DVR use case. We've applied the 5076.dvr_rdk_swms_tiler_rotate.patch.txt patch to the RDK and image flipping x/y wise is working flawless using the Vdis_setRotateConfig call.

Now we want to rotate the image -90° and +90°. This can be done by swapping XY and either flip X or flip Y.

Now we're facing the following problems:

1. When rotating the image +90° (swapXY = 1 & flipY = 1), the chrominance is shifted by about 8-16 pixel to the left, whereas the rotation by -90° (swapXY = 1 & flipX=1) does not show these artifacts. Flipping the image just using flipY=1 does not show any issues, so this only hapens in conjunction with swapXY = 1.

See the following PAL image:

2. When rotating the image to the left (-90°) there are some "crippled" pixels at the beginning of each line, like the follwing PAL images shows:

We currently have no clue where the problem is located.

We also have stripped down the VCAP VDIS usecase and here the same problems occurs, so we think this is a more generic problem than just being a use case issue.

Best regards