Add decrypt hash support

[ Merge of http://go/wvgerrit/68083 ]

Add ability to query decrypt hash support, set a hash computed over a frame
and retrieve the last error at a later point.

Bug: 34080802
Test: WV unit/integration tests. New tests added to cdm_engine_test,
      libwvdrmdrmplugin_hidl_test and request_license_test.

Change-Id: I7548c8798c873a6af3e1cfc0df57c117e1e474a6

libwvdrmengine/include/WVErrors.h

@@ -270,10 +270,13 @@ enum {
   kGetProvisioningError = ERROR_DRM_VENDOR_MIN + 280,
   kDeviceCannotReprovision = ERROR_DRM_VENDOR_MIN + 281,
   kKeySizeError2 = ERROR_DRM_VENDOR_MIN + 282,
+  kSetDecryptHashError = ERROR_DRM_VENDOR_MIN + 283,
+  kGetDecryptHashError = ERROR_DRM_VENDOR_MIN + 284,
+  kInvalidDecryptHashFormat = ERROR_DRM_VENDOR_MIN + 285,
 
   // This should always follow the last error code.
   // The offset value should be updated each time a new error code is added.
-  kErrorWVDrmMaxErrorUsed = ERROR_DRM_VENDOR_MIN + 282,
+  kErrorWVDrmMaxErrorUsed = ERROR_DRM_VENDOR_MIN + 285,
 
   // Used by crypto test mode
   kErrorTestMode = ERROR_DRM_VENDOR_MAX,

libwvdrmengine/include/mapErrors-inl.h

@@ -234,6 +234,7 @@ static android::status_t mapCdmResponseType(wvcdm::CdmResponseType res) {
     case wvcdm::SESSION_NOT_FOUND_17:
     case wvcdm::SESSION_NOT_FOUND_18:
     case wvcdm::SESSION_NOT_FOUND_19:
+    case wvcdm::SESSION_NOT_FOUND_20:
         return android::ERROR_DRM_SESSION_NOT_OPENED;
     case wvcdm::SESSION_KEYS_NOT_FOUND:
       return kSessionKeysNotFound;
@@ -524,6 +525,12 @@ static android::status_t mapCdmResponseType(wvcdm::CdmResponseType res) {
       return kGetProvisioningError;
     case wvcdm::DEVICE_CANNOT_REPROVISION:
       return kDeviceCannotReprovision;
+    case wvcdm::SET_DECRYPT_HASH_ERROR:
+      return kSetDecryptHashError;
+    case wvcdm::GET_DECRYPT_HASH_ERROR:
+      return kGetDecryptHashError;
+    case wvcdm::INVALID_DECRYPT_HASH_FORMAT:
+      return kInvalidDecryptHashFormat;
   }
 
   // Return here instead of as a default case so that the compiler will warn