public boolean isValid(){
  return (mExtensionId >= MIN_ID_VALUE && mExtensionId <= MAX_ID_VALUE) && VIDEO_ORIENTATION_URI.equalsIgnoreCase(mUri);
}

public boolean isValid ( ) { return ( mExtensionId >= MIN_ID_VALUE && mExtensionId <= MAX_ID_VALUE ) && VIDEO_ORIENTATION_URI . equalsIgnoreCase ( mUri ) ; }
verifies if is a valid sdp orientation header
