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/log.h

@@ -0,0 +1,31 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Log - Platform independent interface for a Logging class
+//
+#ifndef CDM_BASE_LOG_H_
+#define CDM_BASE_LOG_H_
+
+namespace wvcdm {
+
+// Simple logging class. The implementation is platform dependent.
+
+typedef enum {
+  LOG_ERROR,
+  LOG_WARN,
+  LOG_INFO,
+  LOG_DEBUG,
+  LOG_VERBOSE
+} LogPriority;
+
+void log_write(LogPriority priority, const char *fmt, ...);
+
+// Log APIs
+#define LOGE(...) ((void)log_write(wvcdm::LOG_ERROR, __VA_ARGS__))
+#define LOGW(...) ((void)log_write(wvcdm::LOG_WARN, __VA_ARGS__))
+#define LOGI(...) ((void)log_write(wvcdm::LOG_INFO, __VA_ARGS__))
+#define LOGD(...) ((void)log_write(wvcdm::LOG_DEBUG, __VA_ARGS__))
+#define LOGV(...) ((void)log_write(wvcdm::LOG_VERBOSE, __VA_ARGS__))
+
+};  // namespace wvcdm
+
+#endif  // CDM_BASE_LOG_H_