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path: root/src/ipa/ipu3/algorithms/af.cpp
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2022-04-09ipa: ipu3: af: Use geometry classes to perform grid centeringKieran Bingham
Use our geometry classes for Rectangle, Size and Point to identify the region of interest for the autofocus, and center it on the BDS output. This will facilitate custom ROI being passed in through controls at a later time. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Tested-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Tested-by: Kate Hsuan <hpa@redhat.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-04-09ipa: ipu3: af: Move constants to implementationKieran Bingham
A selection of constants are imported from ChromiumOS. Move these out of the header, and simplify their documentation. Further more, add a direct reference to the location they were obtained from. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Tested-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Tested-by: Kate Hsuan <hpa@redhat.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2022-04-09ipa: ipu3: af: enforce grid size restrictionsKieran Bingham
Provide enforcement of the selection of the block_{width,height}_log2 parameters to the capabilities of the hardware. While this selection is currently hardcoded to the minimum, providing the restriction now allows for further dynamic sizing in the future and documents the restrictions directly in code, making use of the already existing constants. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com>
2022-03-15ipa: ipu3: af: Auto focus for dw9719 Surface Go2 VCMKate Hsuan
Since VCM for surface Go 2 (dw9719) had been successfully driven, this Af module can be used to control the VCM and determine the focus value based on the IPU3 AF state. Based on the values from the IPU3 AF buffer, the variance of each focus step is determined and a greedy approach is used to find the maximum variance of the AF state and an appropriate focus value. The grid configuration is implemented as a context. Also, the grid parameter- AF_MIN_BLOCK_WIDTH is set to 4 (default is 3) since if the default value is used, x_start (x_start > 640) will be at an incorrect location of the image (rightmost of the sensor). Signed-off-by: Kate Hsuan <hpa@redhat.com> Tested-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>