diff --git a/camera/CameraParameters.cpp b/camera/CameraParameters.cpp
index e4d5bb3..c11d18f 100644
--- a/camera/CameraParameters.cpp
+++ b/camera/CameraParameters.cpp
@@ -71,6 +71,7 @@
 const char CameraParameters::KEY_SMOOTH_ZOOM_SUPPORTED[] = "smooth-zoom-supported";
 const char CameraParameters::KEY_FOCUS_DISTANCES[] = "focus-distances";
 const char CameraParameters::KEY_VIDEO_FRAME_FORMAT[] = "video-frame-format";
+const char CameraParameters::KEY_METERING_MODE[] = "metering-mode";
 
 const char CameraParameters::TRUE[] = "true";
 const char CameraParameters::FOCUS_DISTANCE_INFINITY[] = "Infinity";
@@ -142,6 +143,11 @@
 const char CameraParameters::FOCUS_MODE_EDOF[] = "edof";
 const char CameraParameters::FOCUS_MODE_CONTINUOUS[] = "continuous";
 
+// Values for metering mode settings.
+const char METERING_MODE_CENTER_WEIGHTED[] = "center-weighted";
+const char METERING_MODE_FRAME_AVERAGE[] = "frame-average";
+const char METERING_MODE_SPOT[] = "spot";
+
 CameraParameters::CameraParameters()
                 : mMap()
 {