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/src/WVDrmFactory.cpp

@@ -0,0 +1,36 @@
+//
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+
+//#define LOG_NDEBUG 0
+#define LOG_TAG "WVCdm"
+#include <utils/Log.h>
+
+#include "WVDrmFactory.h"
+
+#include "utils/Errors.h"
+#include "WVCDMSingleton.h"
+#include "WVDrmPlugin.h"
+#include "WVUUID.h"
+
+namespace wvdrm {
+
+using namespace android;
+
+bool WVDrmFactory::isCryptoSchemeSupported(const uint8_t uuid[16]) {
+  return isWidevineUUID(uuid);
+}
+
+status_t WVDrmFactory::createDrmPlugin(const uint8_t uuid[16],
+                                          DrmPlugin** plugin) {
+  if (!isCryptoSchemeSupported(uuid)) {
+    *plugin = NULL;
+    return BAD_VALUE;
+  }
+
+  *plugin = new WVDrmPlugin(getCDM());
+
+  return OK;
+}
+
+} // namespace wvdrm