libcamera: uvc: Initialize the pixel array properties

Initialize the pixel array properties in the UVC pipeline handler as
they're now initialized in the CameraSensor class, which the UVC
pipeline handler does not use.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>

src/libcamera/pipeline/uvcvideo/uvcvideo.cpp

@@ -509,6 +509,22 @@ int UVCCameraData::init(MediaDevice *media)
 	properties_.set(properties::Location, properties::CameraLocationExternal);
 	properties_.set(properties::Model, utils::toAscii(media->model()));
 
+	/*
+	 * Get the current format in order to initialize the sensor array
+	 * properties.
+	 */
+	Size resolution;
+	for (const auto &it : video_->formats()) {
+		const std::vector<SizeRange> &sizeRanges = it.second;
+		for (const SizeRange &sizeRange : sizeRanges) {
+			if (sizeRange.max > resolution)
+				resolution = sizeRange.max;
+		}
+	}
+
+	properties_.set(properties::PixelArraySize, resolution);
+	properties_.set(properties::PixelArrayActiveAreas, { Rectangle(resolution) });
+
 	/* Initialise the supported controls. */
 	ControlInfoMap::Map ctrls;