Delay OEMCrypto Termination

[ Merge of http://go/wvgerrit/89847 ]

This adds a platform specific property that allows OEMCrypto Termination
calls to be delayed. On android this allows a way to avoid
expensive back to back OEMCrypto_Terminate followed by Initialize
calls.

Bug: 136282358
Test: wv unit/integration tests
Change-Id: Ie5b4ff7503dafe77d974caac9c52fc1f169dec89

libwvdrmengine/cdm/core/include/properties.h

@@ -61,6 +61,9 @@ class Properties {
   static void set_provisioning_messages_are_binary(bool flag) {
     provisioning_messages_are_binary_ = flag;
   }
+  static inline bool delay_oem_crypto_termination() {
+    return delay_oem_crypto_termination_;
+  }
   static bool GetCompanyName(std::string* company_name);
   static bool GetModelName(std::string* model_name);
   static bool GetArchitectureName(std::string* arch_name);
@@ -147,6 +150,7 @@ class Properties {
   static bool allow_service_certificate_requests_;
   static bool device_files_is_a_real_filesystem_;
   static bool allow_restore_of_offline_licenses_with_release_;
+  static bool delay_oem_crypto_termination_;
   static std::unique_ptr<CdmClientPropertySetMap> session_property_set_;
 
   CORE_DISALLOW_COPY_AND_ASSIGN(Properties);

libwvdrmengine/cdm/core/src/properties.cpp

@@ -21,6 +21,7 @@ bool Properties::provisioning_messages_are_binary_;
 bool Properties::allow_service_certificate_requests_;
 bool Properties::device_files_is_a_real_filesystem_;
 bool Properties::allow_restore_of_offline_licenses_with_release_;
+bool Properties::delay_oem_crypto_termination_;
 std::unique_ptr<CdmClientPropertySetMap> Properties::session_property_set_;
 
 bool Properties::AddSessionPropertySet(const CdmSessionId& session_id,

libwvdrmengine/cdm/include/properties_configuration.h

@@ -39,6 +39,11 @@ const bool kDeviceFilesIsARealFileSystem = true;
 // will be treated as a release request. If false, a restoration will fail.
 const bool kAllowRestoreOfflineLicenseWithRelease = false;
 
+// This controls whether an OEMCrypto_Terminate call is issued immediately
+// after crypto session count declines to 0 or if a termination is
+// delayed by a countdown timer. If false, termination is immediate.
+const bool kPropertyDelayOemCryptoTermination = true;
+
 }  // namespace wvcdm
 
 #endif  // CDM_BASE_WV_PROPERTIES_CONFIGURATION_H_

libwvdrmengine/cdm/src/properties_android.cpp

@@ -52,6 +52,7 @@ void Properties::InitOnce() {
   device_files_is_a_real_filesystem_ = kDeviceFilesIsARealFileSystem;
   allow_restore_of_offline_licenses_with_release_ =
       kAllowRestoreOfflineLicenseWithRelease;
+  delay_oem_crypto_termination_ = kPropertyDelayOemCryptoTermination;
   session_property_set_.reset(new CdmClientPropertySetMap());
 }