Initial import of Widevine Common Encryption DRM engine

Builds libwvmdrmengine.so, which is loaded by the new
MediaDrm APIs to support playback of Widevine/CENC
protected content.

Change-Id: I6f57dd37083dfd96c402cb9dd137c7d74edc8f1c

libwvdrmengine/cdm/core/include/license.h

@@ -0,0 +1,41 @@
+// Copyright 2012 Google Inc. All Rights Reserved.
+
+#ifndef CDM_BASE_LICENSE_H_
+#define CDM_BASE_LICENSE_H_
+
+#include "license_protocol.pb.h"
+#include "wv_cdm_types.h"
+
+namespace wvcdm {
+
+using video_widevine_server::sdk::LicenseIdentification;
+
+class CryptoSession;
+
+class CdmLicense {
+
+ public:
+
+  CdmLicense();
+  ~CdmLicense();
+
+  bool Init(const std::string& token, CryptoSession* session);
+
+  bool PrepareKeyRequest(const CdmInitData& init_data,
+                         CdmKeyMessage* signed_request);
+  bool PrepareKeyRenewalRequest(CdmKeyMessage* signed_request);
+  bool HandleKeyResponse(const CdmKeyResponse& license_response);
+  bool HandleKeyRenewalResponse(const CdmKeyResponse& license_response);
+
+private:
+
+  LicenseIdentification license_id_;
+  CryptoSession* session_;
+  std::string token_;
+
+  CORE_DISALLOW_COPY_AND_ASSIGN(CdmLicense);
+};
+
+}  // namespace wvcdm
+
+#endif  // CDM_BASE_LICENSE_H_