DolphinNoGUI: Runtime selection of platform

Source/Core/DolphinNoGUI/PlatformHeadless.cpp

@@ -0,0 +1,50 @@
+// Copyright 2018 Dolphin Emulator Project
+// Licensed under GPLv2+
+// Refer to the license.txt file included.
+
+#include <cstdio>
+#include <thread>
+#include "Core/Core.h"
+#include "DolphinNoGUI/Platform.h"
+
+namespace
+{
+class PlatformHeadless : public Platform
+{
+public:
+  void SetTitle(const std::string& title) override;
+  void MainLoop() override;
+
+  WindowSystemInfo GetWindowSystemInfo() const override;
+};
+
+void PlatformHeadless::SetTitle(const std::string& title)
+{
+  std::fprintf(stdout, "%s\n", title.c_str());
+}
+
+void PlatformHeadless::MainLoop()
+{
+  while (m_running.IsSet())
+  {
+    UpdateRunningFlag();
+    Core::HostDispatchJobs();
+    std::this_thread::sleep_for(std::chrono::milliseconds(100));
+  }
+}
+
+WindowSystemInfo PlatformHeadless::GetWindowSystemInfo() const
+{
+  WindowSystemInfo wsi;
+  wsi.type = WindowSystemType::Headless;
+  wsi.display_connection = nullptr;
+  wsi.render_surface = nullptr;
+  return wsi;
+}
+
+}  // namespace
+
+std::unique_ptr<Platform> Platform::CreateHeadlessPlatform()
+{
+  return std::make_unique<PlatformHeadless>();
+}