Make the storage used to accumulate the RGB sums and the Y histogram
value a vector of SwIspStats objects instead of a single object so
that when using multi-threading every thread can use its own storage to
collect intermediate stats to avoid cache-line bouncing.
Benchmarking with the GPU-ISP which does separate swstats benchmarking,
on the Arduino Uno-Q which has a weak CPU which is good for performance
testing, shows 20ms to generate stats for a 3272x2464 frame both before
and after this change.
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
Signed-off-by: Hans de Goede <johannes.goede@oss.qualcomm.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Add a method to the SwstatsCpu class to process a whole Framebuffer in
one go, rather then line by line. This is useful for gathering stats
when debayering is not necessary or is not done on the CPU.
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
[bod: various rebase splats fixed]
[bod: Added constructor Doxygen header]
[bod: Squashed a fix from Hans to calculate stats on every 4th frame]
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
