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authorJean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>2021-09-30 11:05:16 +0200
committerJean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>2021-10-22 07:25:42 +0200
commit59687683a16c64c6821db89c7a1be35b161bf917 (patch)
treeaffc4b4e0e5afb4c662a6bc28f88f833305b9bd9 /src/ipa/raspberrypi/controller/pwl.cpp
parentf407027451bd5b031055e6fc1de0c29163bbe531 (diff)
ipa: ipu3: awb: Set a threshold for the green saturation
We can have a saturation ratio per cell, giving the percentage of pixels over a threshold within a cell where 100% is set to 0xff. The parameter structure 'ipu3_uapi_awb_config_s' contains four fields to set the threshold, one per channel. The blue field is also used to configure the ImgU and make it calculate the saturation ratio or not. Set a green value saturated when it is more than 230 (90% of the maximum value 255, coded as 8191). As this is the only channel used for AGC, there is no need to apply it to the other ones. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
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