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path: root/src/ipa/libipa/histogram.h
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2022-07-27raspberrypi: Update Copyright statement in all Raspberry Pi source filesNaushir Patuck
s/Raspberry Pi (Trading) Limited/Raspberry Pi Ltd/ to reflect the new Raspberry Pi entity name. Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2022-03-28ipa: libipa: Histogram: Constify the constructor spanJean-Michel Hautbois
The Histogram constructor does not modify the data. Pass it a Span<const uint32_t> instead of a Span<uint32_t>. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2021-11-24ipa: libipa: Convert to pragma onceKieran Bingham
Remove the verbose #ifndef/#define/#endif pattern for maintaining header idempotency, and replace it with a simple #pragma once. This simplifies the headers, and prevents redundant changes when header files get moved. Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com>
2021-06-25libcamera/base: Move span to base libraryKieran Bingham
Move span, and adjust the Doxygen exclusion as well. Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
2021-04-22ipa: ipu3: Add a histogram classJean-Michel Hautbois
This class will be used at least by AGC algorithm when quantiles are needed for example. It stores a cumulative frequency histogram. Going from cumulative frequency back to per-bin values is a single subtraction, while going the other way is a loop. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Tested-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>