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/oemcrypto/include/L3CryptoCENC.h

@@ -0,0 +1,109 @@
+/*********************************************************************
+ * L3CryptoCENC.h
+ *
+ * (c) Copyright 2013 Google, Inc.
+ *
+ * Reference APIs needed to support Widevine's crypto algorithms.
+ *********************************************************************/
+
+#ifndef L3CRYPTO_CENC_H_
+#define L3CRYPTO_CENC_H_
+
+#include "OEMCryptoCENC.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define L3CRYPTO_VERSION "5.0"
+static const char l3c_version[] = L3CRYPTO_VERSION;
+
+typedef uint32_t OEMCrypto_SESSION;
+
+
+#define L3Crypto_Initialize          _l3cc01
+#define L3Crypto_Terminate           _l3cc02
+#define L3Crypto_InstallKeybox       _l3cc03
+#define L3Crypto_GetKeyData          _l3cc04
+#define L3Crypto_IsKeyboxValid       _l3cc05
+#define L3Crypto_GetRandom           _l3cc06
+#define L3Crypto_GetDeviceID         _l3cc07
+#define L3Crypto_WrapKeybox          _l3cc08
+#define L3Crypto_OpenSession         _l3cc09
+#define L3Crypto_CloseSession        _l3cc10
+#define L3Crypto_DecryptCTR          _l3cc11
+#define L3Crypto_GenerateDerivedKeys _l3cc12
+#define L3Crypto_GenerateSignature   _l3cc13
+#define L3Crypto_GenerateNonce       _l3cc14
+#define L3Crypto_LoadKeys            _l3cc15
+#define L3Crypto_RefreshKeys         _l3cc16
+#define L3Crypto_SelectKey           _l3cc17
+
+OEMCryptoResult L3Crypto_Initialize(void);
+OEMCryptoResult L3Crypto_Terminate(void);
+OEMCryptoResult L3Crypto_OpenSession(OEMCrypto_SESSION *session);
+OEMCryptoResult L3Crypto_CloseSession(OEMCrypto_SESSION session);
+OEMCryptoResult L3Crypto_GenerateDerivedKeys(
+                            OEMCrypto_SESSION session,
+                            const uint8_t *mac_key_context,
+                            uint32_t mac_key_context_length,
+                            const uint8_t *enc_key_context,
+                            uint32_t enc_key_context_length);
+OEMCryptoResult L3Crypto_GenerateNonce(
+                            OEMCrypto_SESSION session,
+                            uint32_t* nonce);
+OEMCryptoResult L3Crypto_GenerateSignature(
+                            OEMCrypto_SESSION session,
+                            const uint8_t* message,
+                            size_t message_length,
+                            uint8_t* signature,
+                            size_t* signature_length);
+OEMCryptoResult L3Crypto_LoadKeys(OEMCrypto_SESSION session,
+                                   const uint8_t* message,
+                                   size_t message_length,
+                                   const uint8_t* signature,
+                                   size_t signature_length,
+                                   const uint8_t* enc_mac_key_iv,
+                                   const uint8_t* enc_mac_key,
+                                   size_t num_keys,
+                                   const OEMCrypto_KeyObject* key_array);
+OEMCryptoResult
+L3Crypto_RefreshKeys(OEMCrypto_SESSION session,
+                      const uint8_t* message,
+                      size_t message_length,
+                      const uint8_t* signature,
+                      size_t signature_length,
+                      size_t num_keys,
+                      const OEMCrypto_KeyRefreshObject* key_array);
+OEMCryptoResult L3Crypto_SelectKey(const OEMCrypto_SESSION session,
+                                    const uint8_t* key_id,
+                                    size_t key_id_length);
+OEMCryptoResult
+L3Crypto_DecryptCTR(OEMCrypto_SESSION session,
+                     const uint8_t *data_addr,
+                     size_t data_length,
+                     bool is_encrypted,
+                     const uint8_t *iv,
+                     size_t offset,
+                     const OEMCrypto_DestBufferDesc* out_buffer);
+OEMCryptoResult OEMCrypto_InstallKeybox(const uint8_t *keybox,
+                                        size_t keyBoxLength);
+OEMCryptoResult L3Crypto_IsKeyboxValid(void);
+OEMCryptoResult L3Crypto_GetDeviceID(uint8_t* deviceID,
+                                      size_t *idLength);
+OEMCryptoResult L3Crypto_GetKeyData(uint8_t* keyData,
+                                     size_t *keyDataLength);
+OEMCryptoResult L3Crypto_GetRandom(uint8_t* randomData,
+                                    size_t dataLength);
+OEMCryptoResult L3Crypto_WrapKeybox(const uint8_t *keybox,
+                                     size_t keyBoxLength,
+                                     uint8_t *wrappedKeybox,
+                                     size_t *wrappedKeyBoxLength,
+                                     const uint8_t *transportKey,
+                                     size_t transportKeyLength);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // L3CRYPTO_CENC_H_