Add logging implementation.

src/Log.h

@@ -0,0 +1,49 @@
+/*----------------------------------------------------------------------------*/
+/* Copyright (c) FIRST 2016. All Rights Reserved.                             */
+/* Open Source Software - may be modified and shared by FRC teams. The code   */
+/* must be accompanied by the FIRST BSD license file in the root directory of */
+/* the project.                                                               */
+/*----------------------------------------------------------------------------*/
+
+#ifndef CAMERASERVER_LOG_H_
+#define CAMERASERVER_LOG_H_
+
+#include <functional>
+#include <sstream>
+#include <string>
+
+#include "support/atomic_static.h"
+#include "support/Logger.h"
+
+namespace cs {
+
+class Logger : public wpi::Logger {
+ public:
+  static Logger& GetInstance() {
+    ATOMIC_STATIC(Logger, instance);
+    return instance;
+  }
+  ~Logger();
+
+ private:
+  Logger();
+
+  ATOMIC_STATIC_DECL(Logger)
+};
+
+#define LOG(level, x) WPI_LOG(cs::Logger::GetInstance(), level, x)
+
+#undef ERROR
+#define ERROR(x) WPI_ERROR(cs::Logger::GetInstance(), x)
+#define WARNING(x) WPI_WARNING(cs::Logger::GetInstance(), x)
+#define INFO(x) WPI_INFO(cs::Logger::GetInstance(), x)
+
+#define DEBUG(x) WPI_DEBUG(cs::Logger::GetInstance(), x)
+#define DEBUG1(x) WPI_DEBUG1(cs::Logger::GetInstance(), x)
+#define DEBUG2(x) WPI_DEBUG2(cs::Logger::GetInstance(), x)
+#define DEBUG3(x) WPI_DEBUG3(cs::Logger::GetInstance(), x)
+#define DEBUG4(x) WPI_DEBUG4(cs::Logger::GetInstance(), x)
+
+} // namespace cs
+
+#endif  // CAMERASERVER_LOG_H_