Unhide camera autofocus move callback.

Camera autofocus move callback tells the clients when
continuous aufofocus is moving. Applications can show
autofocus animation based on this.

bug:5687212
Change-Id: I3191fd447b1e9de0ccf939eb346344f0be9bcf1a

Author: Wu-cheng Li

api/current.txt

@@ -9451,6 +9451,7 @@ package android.hardware {
     method public static android.hardware.Camera open();
     method public final void reconnect() throws java.io.IOException;
     method public final void release();
+    method public void setAutoFocusMoveCallback(android.hardware.Camera.AutoFocusMoveCallback);
     method public final void setDisplayOrientation(int);
     method public final void setErrorCallback(android.hardware.Camera.ErrorCallback);
     method public final void setFaceDetectionListener(android.hardware.Camera.FaceDetectionListener);
@@ -9486,6 +9487,10 @@ package android.hardware {
     method public abstract void onAutoFocus(boolean, android.hardware.Camera);
   }
 
+  public static abstract interface Camera.AutoFocusMoveCallback {
+    method public abstract void onAutoFocusMoving(boolean, android.hardware.Camera);
+  }
+
   public static class Camera.CameraInfo {
     ctor public Camera.CameraInfo();
     field public static final int CAMERA_FACING_BACK = 0; // 0x0

core/java/android/hardware/Camera.java

@@ -950,19 +950,18 @@ public final void cancelAutoFocus()
     /**
      * Callback interface used to notify on auto focus start and stop.
      *
-     * <p>This is useful for continuous autofocus -- {@link Parameters#FOCUS_MODE_CONTINUOUS_VIDEO}
-     * and {@link Parameters#FOCUS_MODE_CONTINUOUS_PICTURE}. Applications can
-     * show autofocus animation.</p>
-     *
-     * @hide
+     * <p>This is only supported in continuous autofocus modes -- {@link
+     * Parameters#FOCUS_MODE_CONTINUOUS_VIDEO} and {@link
+     * Parameters#FOCUS_MODE_CONTINUOUS_PICTURE}. Applications can show
+     * autofocus animation based on this.</p>
      */
     public interface AutoFocusMoveCallback
     {
         /**
          * Called when the camera auto focus starts or stops.
          *
          * @param start true if focus starts to move, false if focus stops to move
-         * @param camera  the Camera service object
+         * @param camera the Camera service object
          */
         void onAutoFocusMoving(boolean start, Camera camera);
     }
@@ -971,7 +970,6 @@ public interface AutoFocusMoveCallback
      * Sets camera auto-focus move callback.
      *
      * @param cb the callback to run
-     * @hide
      */
     public void setAutoFocusMoveCallback(AutoFocusMoveCallback cb) {
         mAutoFocusMoveCallback = cb;