[libcamera-devel] [PATCH v3 2/3] libcamera: camera_sensor: Register static properties

[Jacopo Mondi]

Register static properties, retrieved inspecting the sensor
database, in the CameraSensor class.

Static properties are overridden by properties retrieved from
the kernel interface at run-time if any overlap between the two
sets occurs.

Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
---
 include/libcamera/internal/camera_sensor.h |  1 +
 src/libcamera/camera_sensor.cpp            | 24 +++++++++++++++++++++-
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/include/libcamera/internal/camera_sensor.h b/include/libcamera/internal/camera_sensor.h
index 3e98f71b5e7f..3fa3a419f94a 100644
--- a/include/libcamera/internal/camera_sensor.h
+++ b/include/libcamera/internal/camera_sensor.h
@@ -77,6 +77,7 @@ private:
 	int generateId();
 	int validateSensorDriver();
 	void initVimcDefaultProperties();
+	void initStaticProperties();
 	int initProperties();
 
 	const MediaEntity *entity_;
diff --git a/src/libcamera/camera_sensor.cpp b/src/libcamera/camera_sensor.cpp
index f7ed91d990f7..c012385ff056 100644
--- a/src/libcamera/camera_sensor.cpp
+++ b/src/libcamera/camera_sensor.cpp
@@ -20,6 +20,7 @@
 
 #include "libcamera/internal/bayer_format.h"
 #include "libcamera/internal/formats.h"
+#include "libcamera/internal/sensor_database.h"
 #include "libcamera/internal/sysfs.h"
 #include "libcamera/internal/utils.h"
 
@@ -266,6 +267,9 @@ int CameraSensor::init()
 	if (ret)
 		return ret;
 
+	/* Initialize the static properties from the sensor database. */
+	initStaticProperties();
+
 	ret = initProperties();
 	if (ret)
 		return ret;
@@ -407,6 +411,21 @@ void CameraSensor::initVimcDefaultProperties()
 	activeArea_ = Rectangle(pixelArraySize_);
 }
 
+void CameraSensor::initStaticProperties()
+{
+	const SensorInfo *info = SensorDatabase::get(model_);
+	if (!info) {
+		LOG(CameraSensor, Warning)
+			<< "No static properties available for '" << model_ << "'";
+		LOG(CameraSensor, Warning)
+			<< "Please consider updating the sensor database";
+		return;
+	}
+
+	/* Register the properties retrieved from the sensor database. */
+	properties_.set(properties::UnitCellSize, info->unitCellSize);
+}
+
 int CameraSensor::initProperties()
 {
 	/*
@@ -444,7 +463,10 @@ int CameraSensor::initProperties()
 	if (ret)
 		return ret;
 
-	/* Retrieve and store the camera sensor properties. */
+	/* Initialize the static properties from the sensor database. */
+	initStaticProperties();
+
+	/* Retrieve and register properties from the kernel interface. */
 	const ControlInfoMap &controls = subdev_->controls();
 	int32_t propertyValue;
 
-- 
2.30.0