Commit Graph

4 Commits

Author SHA1 Message Date
Jean-Michel Hautbois 88c69f8808 ipa: libipa: Histogram: Constify the constructor span
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>
2022-03-28 12:31:37 +02:00
Kieran Bingham f1d94a9c68 ipa: libipa: Convert to pragma once
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>
2021-11-24 12:18:49 +00:00
Kieran Bingham b71e8c2f39 libcamera/base: Move span to base library
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>
2021-06-25 16:11:11 +01:00
Jean-Michel Hautbois 3ebb692f32 ipa: ipu3: Add a histogram class
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>
2021-04-22 10:12:40 +01:00