diff --git a/include/camera/CameraBase.h b/include/camera/CameraBase.h
index 0692a27..03fbdfd 100644
--- a/include/camera/CameraBase.h
+++ b/include/camera/CameraBase.h
@@ -17,7 +17,10 @@
 #ifndef ANDROID_HARDWARE_CAMERA_BASE_H
 #define ANDROID_HARDWARE_CAMERA_BASE_H
 
+#include <android/hardware/ICameraServiceListener.h>
+
 #include <utils/Mutex.h>
+#include <binder/BinderService.h>
 
 struct camera_frame_metadata;
 
@@ -29,6 +32,13 @@
 class ICameraService;
 class ICameraServiceListener;
 
+enum {
+    /** The facing of the camera is opposite to that of the screen. */
+    CAMERA_FACING_BACK = 0,
+    /** The facing of the camera is the same as that of the screen. */
+    CAMERA_FACING_FRONT = 1,
+};
+
 struct CameraInfo : public android::Parcelable {
     /**
      * The direction that the camera faces to. It should be CAMERA_FACING_BACK
@@ -50,11 +60,33 @@
      */
     int orientation;
 
-    virtual status_t writeToParcel(Parcel* parcel) const;
-    virtual status_t readFromParcel(const Parcel* parcel);
+    virtual status_t writeToParcel(android::Parcel* parcel) const;
+    virtual status_t readFromParcel(const android::Parcel* parcel);
 
 };
 
+/**
+ * Basic status information about a camera device - its name and its current
+ * state.
+ */
+struct CameraStatus : public android::Parcelable {
+    /**
+     * The name of the camera device
+     */
+    String8 cameraId;
+
+    /**
+     * Its current status, one of the ICameraService::STATUS_* fields
+     */
+    int32_t status;
+
+    virtual status_t writeToParcel(android::Parcel* parcel) const;
+    virtual status_t readFromParcel(const android::Parcel* parcel);
+
+    CameraStatus(String8 id, int32_t s) : cameraId(id), status(s) {}
+    CameraStatus() : status(ICameraServiceListener::STATUS_PRESENT) {}
+};
+
 } // namespace hardware
 
 using hardware::CameraInfo;
@@ -86,12 +118,6 @@
                                        /*out*/
                                        struct hardware::CameraInfo* cameraInfo);
 
-    static status_t      addServiceListener(
-        const sp<::android::hardware::ICameraServiceListener>& listener);
-
-    static status_t      removeServiceListener(
-        const sp<::android::hardware::ICameraServiceListener>& listener);
-
     sp<TCamUser>         remote();
 
     // Status is set to 'UNKNOWN_ERROR' after successful (re)connection