Initial commit

src/pse-sdl/sdl_interface.h

@@ -0,0 +1,70 @@
+#pragma once
+#include "common/display_renderer.h"
+#include "pse-sdl/sdl_audio_mixer.h"
+#include <array>
+#include <deque>
+#include <mutex>
+
+struct SDL_Window;
+union SDL_Event;
+
+class System;
+
+class SDLInterface
+{
+public:
+  using MixerType = SDLAudioMixer;
+  // using MixerType = Audio::NullMixer;
+
+  SDLInterface(SDL_Window* window, std::unique_ptr<DisplayRenderer> display_renderer,
+                   std::unique_ptr<MixerType> mixer);
+  ~SDLInterface();
+
+  static std::unique_ptr<SDLInterface>
+  Create(DisplayRenderer::BackendType display_renderer_backend = DisplayRenderer::GetDefaultBackendType());
+
+  static TinyString GetSaveStateFilename(u32 index);
+
+  bool InitializeSystem(const char* filename, s32 save_state_index = -1);
+
+  DisplayRenderer* GetDisplayRenderer() const { return m_display_renderer.get(); }
+  Audio::Mixer* GetAudioMixer() const { return m_mixer.get(); }
+
+  void ReportMessage(const char* message);
+
+  void Run();
+
+  // Adds OSD messages, duration is in seconds.
+  void AddOSDMessage(const char* message, float duration = 2.0f);
+
+protected:
+  struct OSDMessage
+  {
+    String text;
+    Timer time;
+    float duration;
+  };
+
+  // We only pass mouse input through if it's grabbed
+  bool IsWindowFullscreen() const;
+  void RenderImGui();
+  void DoLoadState(u32 index);
+  void DoSaveState(u32 index);
+
+  bool HandleSDLEvent(const SDL_Event* event);
+  bool PassEventToImGui(const SDL_Event* event);
+  void Render();
+  void RenderMainMenuBar();
+  void RenderOSDMessages();
+
+  SDL_Window* m_window;
+
+  std::unique_ptr<DisplayRenderer> m_display_renderer;
+  std::unique_ptr<MixerType> m_mixer;
+  std::unique_ptr<System> m_system;
+
+  std::deque<OSDMessage> m_osd_messages;
+  std::mutex m_osd_messages_lock;
+
+  bool m_running = false;
+};