Refactor oemcrypto mock into stand alone reference code

Merge from Widevine repo of http://go/wvgerrit/46204
Refactor utility code - split the mock, step 1

Merge from Widevine repo of http://go/wvgerrit/46205
Move some OEMCrypto types to common header - split the mock, step 2

Merge from Widevine repo of http://go/wvgerrit/46206
Split mock into two -- step 3

Merge from Widevine repo of http://go/wvgerrit/47460
Split the mock into two -- step 3.5

The CL moves several files used by oemcrypto and cdm into a common
subdirectory, so that it may more easily be shared with partners.

The CORE_DISALLOW_COPY_AND_ASSIGN macro was moved to its own header in
the util/include directory.

This CL removes some references to the mock from other code, and puts
some constants and types, such as the definition of the keybox, into a
header in oemcrypto.

Test: tested as part of http://go/ag/4674759
bug: 76393338
Change-Id: I75b4bde7062ed8ee572c97ebc2f4da018f4be0c9

libwvdrmengine/cdm/util/src/log.cpp

@@ -0,0 +1,78 @@
+// Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
+// source code may only be used and distributed under the Widevine Master
+// License Agreement.
+//
+// Log - implemented using the standard Android logging mechanism
+
+/*
+ * Qutoing from system/core/include/log/log.h:
+ * Normally we strip ALOGV (VERBOSE messages) from release builds.
+ * You can modify this (for example with "#define LOG_NDEBUG 0"
+ * at the top of your source file) to change that behavior.
+ */
+#ifndef LOG_NDEBUG
+#ifdef NDEBUG
+#define LOG_NDEBUG 1
+#else
+#define LOG_NDEBUG 0
+#endif
+#endif
+
+#define LOG_TAG "WVCdm"
+#define LOG_BUF_SIZE 1024
+
+#include "log.h"
+#include <utils/Log.h>
+
+#include <string>
+
+#include <stdio.h>
+#include <stdarg.h>
+
+/*
+ * Uncomment the line below if you want to have the LOGV messages to print
+ * IMPORTANT : this will affect all of CDM
+ */
+
+// #define LOG_NDEBUG 0
+
+namespace wvcdm {
+
+LogPriority g_cutoff = LOG_VERBOSE;
+
+void InitLogging() {}
+
+void Log(const char* file, const char* function, int line, LogPriority level,
+         const char* format, ...) {
+  const char* filename = strrchr(file, '/');
+  filename = filename == nullptr ? file : filename + 1;
+
+  char buf[LOG_BUF_SIZE];
+  int len = snprintf(buf, LOG_BUF_SIZE, "[%s(%d):%s] ", filename, line,
+                     function);
+  if (len < 0) len = 0;
+  if (static_cast<unsigned int>(len) < sizeof(buf)) {
+    va_list ap;
+    va_start(ap, format);
+    vsnprintf(buf+len, LOG_BUF_SIZE-len, format, 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;
+#if LOG_NDEBUG
+    case LOG_VERBOSE: return;
+#else
+    case LOG_VERBOSE: prio = ANDROID_LOG_VERBOSE; break;
+#endif
+  }
+
+  __android_log_write(prio, LOG_TAG, buf);
+}
+
+}  // namespace wvcdm