lcameraDev: Add session mgr lib for libcamera device binding

commonLibs/lcameraDev/cameraIdentity.cpp

@@ -0,0 +1,66 @@
+#include <cameraIdentity.h>
+#include <libcamera/property_ids.h>
+#include <algorithm>
+#include <cctype>
+#include <optional>
+
+namespace lcamera_dev {
+
+std::string locationPropertyToLabel(int32_t locationValue)
+{
+	using namespace libcamera::properties;
+
+	if (locationValue == CameraLocationFront) {
+		return "front";
+	}
+	if (locationValue == CameraLocationBack) {
+		return "back";
+	}
+	if (locationValue == CameraLocationExternal) {
+		return "external";
+	}
+
+	return "";
+}
+
+CameraIdentityRecord buildIdentityRecord(
+	const std::shared_ptr<libcamera::Camera>& camera)
+{
+	CameraIdentityRecord record;
+	record.id = camera->id();
+
+	const libcamera::ControlList& props = camera->properties();
+
+	const std::optional<std::string> model =
+		props.get(libcamera::properties::Model);
+	if (model) {
+		record.model = *model;
+	}
+
+	const std::optional<int> location =
+		props.get(libcamera::properties::Location);
+	if (location)
+	{
+		record.locationLabel = locationPropertyToLabel(*location);
+	}
+
+	return record;
+}
+
+std::vector<CameraIdentityRecord> buildIdentityRecords(
+	const std::vector<std::shared_ptr<libcamera::Camera>>& cameras)
+{
+	std::vector<CameraIdentityRecord> records;
+	records.reserve(cameras.size());
+
+	for (const auto& camera : cameras)
+	{
+		if (!camera) { continue; }
+
+		records.push_back(buildIdentityRecord(camera));
+	}
+
+	return records;
+}
+
+} // namespace lcamera_dev