Clear Content Copy

Copy from Widevine repository of http://go/wvgerrit/13841

This CL adds a nonblocking CopyBuffer to OEMCrypto, its unit tests,
and plumbs it up to the cdm CryptoSession and CdmEngine.

b/19543782

Change-Id: I4c88bd2f8d7f67ecccb549c1934b7c0da15a8429

libwvdrmengine/oemcrypto/mock/src/oemcrypto_engine_mock.h

@@ -20,12 +20,6 @@
 
 namespace wvoec_mock {
 
-enum BufferType {
-  kBufferTypeClear,
-  kBufferTypeSecure,
-  kBufferTypeDirect
-};
-
 class SessionContext;
 class CryptoEngine;
 class UsageTable;
@@ -117,7 +111,8 @@ class SessionContext {
   OEMCryptoResult DecryptCTR(const uint8_t* iv, size_t block_offset,
                              const uint8_t* cipher_data,
                              size_t cipher_data_length, bool is_encrypted,
-                             uint8_t* clear_data, BufferType buffer_type);
+                             uint8_t* clear_data,
+                             OEMCryptoBufferType buffer_type);
 
   OEMCryptoResult Generic_Encrypt(const uint8_t* in_buffer,
                                   size_t buffer_length, const uint8_t* iv,