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/level3/arm/l3crypto_keybox_mock.h

@@ -0,0 +1,50 @@
+/*******************************************************************************
+ *
+ * Copyright 2013 Google Inc. All Rights Reserved.
+ *
+ * mock implementation of OEMCrypto APIs
+ *
+ ******************************************************************************/
+
+#ifndef L3CRYPTO_KEYBOX_MOCK_H_
+#define L3CRYPTO_KEYBOX_MOCK_H_
+
+#include "l3crypto_key_mock.h"
+
+namespace wvoec_obfs {
+
+const int DEVICE_KEY_LENGTH = 16;
+typedef uint8_t WvKeyboxKey[DEVICE_KEY_LENGTH];
+
+const int KEY_DATA_LENGTH = 72;
+typedef uint8_t WvKeyboxKeyData[KEY_DATA_LENGTH];
+
+enum KeyboxError { NO_ERROR, BAD_CRC, BAD_MAGIC, OTHER_ERROR };
+
+// Widevine keybox
+class WvKeybox {
+ public:
+  WvKeybox();
+  ~WvKeybox() {}
+
+  KeyboxError Validate();
+  const std::vector<uint8_t>& device_id() { return device_id_; }
+  Key& device_key() { return device_key_; }
+  const WvKeyboxKeyData& key_data() { return key_data_; }
+  size_t key_data_length() { return KEY_DATA_LENGTH; }
+  bool InstallKeybox(const uint8_t* keybox, size_t keyBoxLength);
+
+ private:
+
+  bool Prepare();
+
+  bool valid_;
+  std::vector<uint8_t> device_id_;
+  Key device_key_;
+  WvKeyboxKeyData key_data_;
+  uint8_t magic_[4];
+  uint8_t crc_[4];
+};
+
+};   // namespace wvoec_eng
+#endif