Widevine MediaCas client code that works with Android R

wvutil/include/log.h

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+// 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 - Platform independent interface for a Logging class
+//
+#ifndef WV_UTIL_LOG_H_
+#define WV_UTIL_LOG_H_
+
+#include "util_common.h"
+
+namespace wvutil {
+
+// Simple logging class. The implementation is platform dependent.
+
+typedef enum {
+  // This log level should only be used for |g_cutoff|, in order to silence all
+  // logging. It should never be passed to |Log()| as a log level.
+  LOG_SILENT = -1,
+
+  LOG_ERROR = 0,
+  LOG_WARN = 1,
+  LOG_INFO = 2,
+  LOG_DEBUG = 3,
+  LOG_VERBOSE = 4,
+} LogPriority;
+
+extern LogPriority g_cutoff;
+
+// Enable/disable verbose logging (LOGV).
+// This function is supplied for cases where the system layer does not
+// initialize logging.  This is also needed to initialize logging in
+// unit tests.
+CORE_UTIL_EXPORT void InitLogging();
+
+CORE_UTIL_EXPORT void Log(const char* file, const char* function, int line,
+                          LogPriority level, const char* fmt, ...);
+
+// Log APIs
+#ifndef LOGE
+#define LOGE(...) Log(__FILE__, __func__, __LINE__, \
+                      wvutil::LOG_ERROR, __VA_ARGS__)
+#define LOGW(...) Log(__FILE__, __func__, __LINE__, \
+                      wvutil::LOG_WARN, __VA_ARGS__)
+#define LOGI(...) Log(__FILE__, __func__, __LINE__, \
+                      wvutil::LOG_INFO, __VA_ARGS__)
+#define LOGD(...) Log(__FILE__, __func__, __LINE__, \
+                      wvutil::LOG_DEBUG, __VA_ARGS__)
+#define LOGV(...) Log(__FILE__, __func__, __LINE__, \
+                      wvutil::LOG_VERBOSE, __VA_ARGS__)
+#endif
+}  // namespace wvutil
+
+#endif  // WV_UTIL_LOG_H_