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/log.cpp

@@ -0,0 +1,33 @@
+// Copyright 2013 Google Inc. All Rights Reserved.
+//
+// Log - implemented using the standard Android logging mechanism
+
+#define LOG_TAG "WVCdm"
+#define LOG_BUF_SIZE 1024
+
+#include "log.h"
+#include "utils/Log.h"
+
+namespace wvcdm {
+
+void log_write(LogPriority level, const char *fmt, ...) {
+  va_list ap;
+  char buf[LOG_BUF_SIZE];
+  va_start(ap, fmt);
+  vsnprintf(buf, LOG_BUF_SIZE, fmt, ap);
+  va_end(ap);
+
+  android_LogPriority prio = ANDROID_LOG_VERBOSE;
+
+  switch(level) {
+    case LOG_ERROR: prio = ANDROID_LOG_ERROR; break;
+    case LOG_WARN: prio = ANDROID_LOG_WARN; break;
+    case LOG_INFO: prio = ANDROID_LOG_INFO; break;
+    case LOG_DEBUG: prio = ANDROID_LOG_DEBUG; break;
+    case LOG_VERBOSE: prio = ANDROID_LOG_VERBOSE; break;
+  }
+
+  __android_log_write(prio, LOG_TAG, buf);
+}
+
+};  // namespace wvcdm