disable/enable hdcp on start of playing video

BZ:129963 138555

hdcp was borken on start of playing video. This patch fixes it by disable/enable hdcp.
mode setting is skip when device is blank.

Change-Id: Icd2cfa15aba184fd712b728541cd017d5e47635f
Signed-off-by: fu jin <fu.jin@intel.com>
Signed-off-by: Lin Xie <lin.xie@intel.com>
Signed-off-by: Andy Qiu <junhai.qiu@intel.com>
Signed-off-by: pingshix <pingx.shi@intel.com>
diff --git a/include/PhysicalDevice.h b/include/PhysicalDevice.h
index 3cf5d63..6d7cf17 100644
--- a/include/PhysicalDevice.h
+++ b/include/PhysicalDevice.h
@@ -107,6 +107,7 @@
     // layer list
     HwcLayerList *mLayerList;
     bool mConnected;
+    bool mBlank;
 
     // lock
     Mutex mLock;