[libcamera-devel] [PATCH 3/4] libcamera: camera_sensor: Initialize PixelArray properties

[Jacopo Mondi]

Initialize pixel array properties 'PixelArraySize' and
'PixelArrayActiveArea' inspecting the V4L2 CROP_BOUNDS and CROP_DEFAULT
selection targets.

The properties are registered only if the sensor subdevice support
the above mentioned selection targets.

Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>
---
 src/libcamera/camera_sensor.cpp | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/src/libcamera/camera_sensor.cpp b/src/libcamera/camera_sensor.cpp
index 49b0a026125c..266ed7e9238e 100644
--- a/src/libcamera/camera_sensor.cpp
+++ b/src/libcamera/camera_sensor.cpp
@@ -288,6 +288,28 @@ int CameraSensor::initProperties()
 		propertyValue = 0;
 	properties_.set(properties::Rotation, propertyValue);
 
+	Rectangle bounds{};
+	ret = subdev_->getSelection(pad_, V4L2_SEL_TGT_CROP_BOUNDS, &bounds);
+	if (!ret) {
+		properties_.set(properties::PixelArraySize,
+				Size(bounds.width, bounds.height));
+	}
+
+	Rectangle crop{};
+	ret = subdev_->getSelection(pad_, V4L2_SEL_TGT_CROP_DEFAULT, &crop);
+	if (!ret) {
+		/*
+		 * V4L2_SEL_TGT_CROP_DEFAULT and V4L2_SEL_TGT_CROP_BOUNDS are
+		 * defined relatively to the sensor native pixel array size,
+		 * while properties::PixelArrayActiveAreas is defined relatively
+		 * to properties::PixelArraySize. Adjust them
+		 */
+		crop.x -= bounds.x;
+		crop.y -= bounds.y;
+		properties_.set(properties::PixelArrayActiveAreas,
+				{ crop });
+	}
+
 	return 0;
 }
 
-- 
2.29.1