Cas Client repo update-2.

-Parse EMM in Cas plugin
-Entitlement key rotation support
-Multi_content_license support

plugin/include/widevine_cas_session.h

@@ -49,6 +49,8 @@ class WidevineCasSession {
   CasStatus initialize(std::shared_ptr<CryptoSession> crypto_session,
                        CasEventListener* event_listener, uint32_t* session_id);
 
+  CasStatus resetCryptoSession(std::shared_ptr<CryptoSession> crypto_session);
+
   // Process an ecm and extract the key slot data. Extracted data will be used
   // to update |current_ecm_| and |entitlement_key_id_| and |keys_|.
   // |parental_control_age| (if non-zero) must be greater or equal to the
@@ -63,7 +65,16 @@ class WidevineCasSession {
   const char* securityLevel();
 
   // Returns current ecm age restriction value.
-  uint8_t GetEcmAgeRestriction() { return ecm_age_restriction_; }
+  uint8_t GetEcmAgeRestriction() const { return ecm_age_restriction_; }
+  // Returns the entitlement period index specified in the last received ECM.
+  uint32_t GetEntitlementPeriodIndex() const {
+    return entitlement_period_index_;
+  }
+  // Returns the entitlement rotation window left value specified in the last
+  // received ECM.
+  uint32_t GetEntitlementRotationWindowLeft() const {
+    return entitlement_rotation_window_left_;
+  }
 
   WidevineCasSession(const WidevineCasSession&) = delete;
   WidevineCasSession& operator=(const WidevineCasSession&) = delete;
@@ -74,7 +85,7 @@ class WidevineCasSession {
 
   CasKeySlotData keys_;  // Odd and even key slots.
   std::string entitlement_key_id_;
-  std::mutex lock_;
+  std::mutex crypto_lock_;
   CasEcm current_ecm_;
   uint8_t ecm_age_restriction_ = 0;
   std::shared_ptr<CryptoSession> crypto_session_;
@@ -87,6 +98,10 @@ class WidevineCasSession {
   // Service blocking events sent in processing last ECM/EMM. Used to avoid
   // sending a same event again.
   std::vector<uint8_t> last_service_blocking_message_;
+  // The entitlement period index in the last received ECM.
+  uint32_t entitlement_period_index_;
+  // The entitlement rotation window left in the last received ECM.
+  uint32_t entitlement_rotation_window_left_;
 };
 
 }  // namespace wvcas