diff --git a/camera/CameraParameters.cpp b/camera/CameraParameters.cpp
index 49af680..86534a7 100644
--- a/camera/CameraParameters.cpp
+++ b/camera/CameraParameters.cpp
@@ -162,6 +162,10 @@
 const char CameraParameters::KEY_CAMERA_MODE[] = "camera-mode";
 #endif
 const char CameraParameters::KEY_AE_BRACKET_HDR[] = "ae-bracket-hdr";
+
+const char CameraParameters::KEY_POWER_MODE[] = "power-mode";
+const char CameraParameters::KEY_POWER_MODE_SUPPORTED[] = "power-mode-supported";
+
 /*only effective when KEY_AE_BRACKET_HDR set to ae_bracketing*/
 //const char CameraParameters::KEY_AE_BRACKET_SETTING_KEY[] = "ae-bracket-setting";
 
@@ -394,6 +398,9 @@
 const char CameraParameters::AE_BRACKET_HDR[] = "HDR";
 const char CameraParameters::AE_BRACKET[] = "AE-Bracket";
 
+const char CameraParameters::LOW_POWER[] = "Low_Power";
+const char CameraParameters::NORMAL_POWER[] = "Normal_Power";
+
 static const char* portrait = "portrait";
 static const char* landscape = "landscape";