getWidth/getHeight optimized.

(cherry picked from commit 7d4432df27)

modules/androidcamera/src/camera_activity.cpp

@@ -382,18 +382,24 @@ void CameraActivity::applyProperties()
     frameWidth = -1;
     frameHeight = -1;
     CameraWrapperConnector::applyProperties(&camera);
+    frameWidth = getProperty(ANDROID_CAMERA_PROPERTY_FRAMEWIDTH);
+    frameHeight = getProperty(ANDROID_CAMERA_PROPERTY_FRAMEHEIGHT);
 }
 
 int CameraActivity::getFrameWidth()
 {
     LOGD("CameraActivity::getFrameWidth()");
-    return getProperty(ANDROID_CAMERA_PROPERTY_FRAMEWIDTH);
+    if (frameWidth <= 0)
+	frameWidth = getProperty(ANDROID_CAMERA_PROPERTY_FRAMEWIDTH);
+    return frameWidth;
 }
 
 int CameraActivity::getFrameHeight()
 {
     LOGD("CameraActivity::getFrameHeight()");
-    return frameHeight = getProperty(ANDROID_CAMERA_PROPERTY_FRAMEHEIGHT);
+    if (frameHeight <= 0)
+	frameHeight = getProperty(ANDROID_CAMERA_PROPERTY_FRAMEHEIGHT);
+    return frameHeight;
 }
 
 void CameraActivity::setPathLibFolder(const char* path)