libcamera: software_isp: Add SwStatsCpu class

Add a CPU based SwStats implementation for SoftwareISP / SoftIPA use.

This implementation offers a configure function + functions to gather
statistics on a line by line basis. This allows CPU based software
debayering to call into interleave debayering and statistics gathering
on a line by line basis while the input data is still hot in the cache.

This implementation also allows specifying a window over which to gather
statistics instead of processing the whole frame.

Doxygen documentation by Dennis Bonke.

Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # sc8280xp Lenovo x13s
Tested-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Pavel Machek <pavel@ucw.cz>
Reviewed-by: Milan Zamazal <mzamazal@redhat.com>
Co-developed-by: Andrey Konovalov <andrey.konovalov@linaro.org>
Signed-off-by: Andrey Konovalov <andrey.konovalov@linaro.org>
Co-developed-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Pavel Machek <pavel@ucw.cz>
Co-developed-by: Dennis Bonke <admin@dennisbonke.com>
Signed-off-by: Dennis Bonke <admin@dennisbonke.com>
Co-developed-by: Marttico <g.martti@gmail.com>
Signed-off-by: Marttico <g.martti@gmail.com>
Co-developed-by: Toon Langendam <t.langendam@gmail.com>
Signed-off-by: Toon Langendam <t.langendam@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/src/libcamera/software_isp/meson.build b/src/libcamera/software_isp/meson.build
new file mode 100644
index 00000000..281bbf0e
--- /dev/null
+++ b/src/libcamera/software_isp/meson.build
@@ -0,0 +1,12 @@
+# SPDX-License-Identifier: CC0-1.0
+
+softisp_enabled = pipelines.contains('simple')
+summary({'SoftISP support' : softisp_enabled}, section : 'Configuration')
+
+if not softisp_enabled
+    subdir_done()
+endif
+
+libcamera_sources += files([
+    'swstats_cpu.cpp',
+])