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authorJean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>2022-02-24 12:33:46 +0100
committerJean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>2022-03-28 12:31:37 +0200
commit8917c9e7ba642285ae33a7b9cee9cb4a22c76482 (patch)
tree6273e4804b8e75c7885f9c9857e8668c788b6beb /src/ipa/raspberrypi
parent88c69f88089ba7f9ec8c25aa9f084e1143ad9f29 (diff)
ipa: rkisp1: agc: Add a histogram-based gain
As for the IPU3, we can estimate the histogram of the luminance. The RkISP1 can estimate multiple ones, the R, G and B ones, the Y only one and a combination of RGB. The one we are interested by in AGC is the Y histogram. Use the hardware revision to determine the number of bins of the produced histogram. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Tested-by: Peter Griffin <peter.griffin@linaro.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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