replay: convert UBWC VisionBuf to nv12 with sde rotator #35575
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This PR has had no activity for 9 days. It will be automatically closed in 2 days if there is no activity. |
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This PR has been automatically closed due to inactivity. Feel free to re-open once activity resumes. |
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This PR has had no activity for 9 days. It will be automatically closed in 2 days if there is no activity. |
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This PR has had no activity for 9 days. It will be automatically closed in 2 days if there is no activity. |
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This PR has been automatically closed due to inactivity. Feel free to re-open once activity resumes. |
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Does this work? If so, we can just merge after a little cleanup. |
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https://github.dev/commaai/agnos-kernel-sdm845/blob/0ba5f48f36d4e43c3b095a410279ed08050209fb/drivers/gpu/drm/msm/sde/sde_hw_rot.c#L583
decompress NV12 UBWC VisionBuf to NV12 with sde rotator hardware. This uses v4l2 to set the input frame buffer format (in this case, V4L2_PIX_FMT_NV12_UBWC) to the desired format (decompressed V4L2_PIX_FMT_NV12). A program will provide put_frame(vision_buf), with a pointer to an allocated visionbuf which needs to be decompressed which will then send the command to the hardware. Then call get_frame which will poll the rotator fd and return a pointer to the decompressed vision buffer.
Note that OUTPUT buffers are the inputs (nv12_ubwc) and CAPTURE buffers are the output (nv12).