Qt: Update window title/save states from running title

src/core/game_list.cpp

@@ -210,7 +210,7 @@ static std::string_view GetFileNameFromPath(const char* path)
     return std::string_view(filename_start + 1, filename_end - filename_start);
 }
 
-static std::string_view GetTitleForPath(const char* path)
+std::string_view GameList::GetTitleForPath(const char* path)
 {
   const char* extension = std::strrchr(path, '.');
   if (path == extension)
@@ -295,13 +295,11 @@ bool GameList::GetGameListEntry(const std::string& path, GameListEntry* entry)
   }
   else
   {
-    LoadDatabase();
-
-    auto iter = m_database.find(entry->code);
-    if (iter != m_database.end())
+    const GameListDatabaseEntry* database_entry = GetDatabaseEntryForCode(entry->code);
+    if (database_entry)
     {
-      entry->title = iter->second.title;
-      entry->region = iter->second.region;
+      entry->title = database_entry->title;
+      entry->region = database_entry->region;
     }
     else
     {
@@ -620,7 +618,7 @@ public:
       auto iter = m_database.find(code);
       if (iter == m_database.end())
       {
-        GameList::GameDatabaseEntry gde;
+        GameListDatabaseEntry gde;
         gde.code = std::move(code);
         gde.region = GameList::GetRegionForCode(gde.code).value_or(ConsoleRegion::NTSC_U);
         gde.title = name;
@@ -641,7 +639,7 @@ public:
   }
 
 private:
-  GameList::DatabaseMap& m_database;
+  DatabaseMap& m_database;
 };
 
 void GameList::AddDirectory(std::string path, bool recursive)
@@ -662,13 +660,22 @@ const GameListEntry* GameList::GetEntryForPath(const char* path) const
   const size_t path_length = std::strlen(path);
   for (const GameListEntry& entry : m_entries)
   {
-    if (entry.path.size() == path_length && StringUtil::Strcasecmp(entry.path.c_str(), path))
+    if (entry.path.size() == path_length && StringUtil::Strcasecmp(entry.path.c_str(), path) == 0)
       return &entry;
   }
 
   return nullptr;
 }
 
+const GameListDatabaseEntry* GameList::GetDatabaseEntryForCode(const std::string& code) const
+{
+  if (!m_database_load_tried)
+    const_cast<GameList*>(this)->LoadDatabase();
+
+  auto iter = m_database.find(code);
+  return (iter != m_database.end()) ? &iter->second : nullptr;
+}
+
 void GameList::SetPathsFromSettings(SettingsInterface& si)
 {
   m_search_directories.clear();

src/core/game_list.h

@@ -18,6 +18,13 @@ enum class GameListEntryType
   PSExe
 };
 
+struct GameListDatabaseEntry
+{
+  std::string code;
+  std::string title;
+  ConsoleRegion region;
+};
+
 struct GameListEntry
 {
   std::string path;
@@ -48,11 +55,13 @@ public:
   static std::optional<ConsoleRegion> GetRegionFromSystemArea(CDImage* cdi);
   static std::optional<ConsoleRegion> GetRegionForImage(CDImage* cdi);
   static std::optional<ConsoleRegion> GetRegionForPath(const char* image_path);
+  static std::string_view GetTitleForPath(const char* path);
 
   const EntryList& GetEntries() const { return m_entries; }
   const u32 GetEntryCount() const { return static_cast<u32>(m_entries.size()); }
 
   const GameListEntry* GetEntryForPath(const char* path) const;
+  const GameListDatabaseEntry* GetDatabaseEntryForCode(const std::string& code) const;
 
   void SetPathsFromSettings(SettingsInterface& si);
   void AddDirectory(std::string path, bool recursive);
@@ -65,14 +74,7 @@ private:
     GAME_LIST_CACHE_VERSION = 2
   };
 
-  struct GameDatabaseEntry
-  {
-    std::string code;
-    std::string title;
-    ConsoleRegion region;
-  };
-
-  using DatabaseMap = std::unordered_map<std::string, GameDatabaseEntry>;
+  using DatabaseMap = std::unordered_map<std::string, GameListDatabaseEntry>;
   using CacheMap = std::unordered_map<std::string, GameListEntry>;
 
   struct DirectoryEntry

src/core/host_interface.cpp

@@ -8,6 +8,7 @@
 #include "common/string_util.h"
 #include "common/timer.h"
 #include "dma.h"
+#include "game_list.h"
 #include "gpu.h"
 #include "host_display.h"
 #include "mdec.h"
@@ -51,6 +52,7 @@ static std::string GetRelativePath(const std::string& path, const char* new_file
 
 HostInterface::HostInterface()
 {
+  m_game_list = std::make_unique<GameList>();
   m_settings.SetDefaults();
   m_last_throttle_time = Common::Timer::GetValue();
 }
@@ -435,6 +437,8 @@ void HostInterface::UpdateSpeedLimiterState()
 
 void HostInterface::OnPerformanceCountersUpdated() {}
 
+void HostInterface::OnRunningGameChanged(const char* path, const char* game_code, const char* game_title) {}
+
 void HostInterface::RunFrame()
 {
   m_frame_timer.Reset();
@@ -490,3 +494,31 @@ void HostInterface::ResetPerformanceCounters()
   m_worst_frame_time_accumulator = 0.0f;
   m_fps_timer.Reset();
 }
+
+void HostInterface::UpdateRunningGame(const char* path, CDImage* image)
+{
+  if (!path)
+  {
+    OnRunningGameChanged("", "", "");
+    return;
+  }
+
+  const GameListEntry* list_entry = m_game_list->GetEntryForPath(path);
+  if (list_entry)
+  {
+    OnRunningGameChanged(path, list_entry->code.c_str(), list_entry->title.c_str());
+    return;
+  }
+
+  const std::string game_code = image ? GameList::GetGameCodeForImage(image) : std::string();
+  const GameListDatabaseEntry* db_entry =
+    (!game_code.empty()) ? m_game_list->GetDatabaseEntryForCode(game_code) : nullptr;
+  if (!db_entry)
+  {
+    const std::string game_title(GameList::GetTitleForPath(path));
+    OnRunningGameChanged(path, game_code.c_str(), game_title.c_str());
+    return;
+  }
+
+  OnRunningGameChanged(path, db_entry->code.c_str(), db_entry->title.c_str());
+}

src/core/host_interface.h

@@ -11,12 +11,16 @@
 #include <vector>
 
 class AudioStream;
+class CDImage;
 class HostDisplay;
+class GameList;
 
 class System;
 
 class HostInterface
 {
+  friend System;
+
 public:
   HostInterface();
   virtual ~HostInterface();
@@ -30,6 +34,9 @@ public:
   /// Returns a settings object which can be modified.
   Settings& GetSettings() { return m_settings; }
 
+  /// Returns the game list.
+  const GameList* GetGameList() const { return m_game_list.get(); }
+
   /// Adjusts the throttle frequency, i.e. how many times we should sleep per second.
   void SetThrottleFrequency(double frequency) { m_throttle_period = static_cast<s64>(1000000000.0 / frequency); }
 
@@ -73,6 +80,7 @@ protected:
   };
 
   virtual void OnPerformanceCountersUpdated();
+  virtual void OnRunningGameChanged(const char* path, const char* game_code, const char* game_title);
 
   void RunFrame();
 
@@ -89,9 +97,12 @@ protected:
   void UpdatePerformanceCounters();
   void ResetPerformanceCounters();
 
+  void UpdateRunningGame(const char* path, CDImage* image);
+
   std::unique_ptr<HostDisplay> m_display;
   std::unique_ptr<AudioStream> m_audio_stream;
   std::unique_ptr<System> m_system;
+  std::unique_ptr<GameList> m_game_list;
   Settings m_settings;
 
   u64 m_last_throttle_time = 0;

src/core/system.cpp

@@ -154,6 +154,9 @@ bool System::Boot(const char* filename)
     return false;
   }
 
+  // Notify change of disc.
+  m_host_interface->UpdateRunningGame(filename, media.get());
+
   // Insert CD, and apply fastboot patch if enabled.
   m_cdrom->InsertMedia(std::move(media));
   if (m_cdrom->HasMedia() && GetSettings().bios_patch_fast_boot)

src/duckstation-qt/mainwindow.cpp

@@ -42,7 +42,6 @@ void MainWindow::onEmulationStarted()
 {
   m_emulation_running = true;
   updateEmulationActions(false, true);
-  populateLoadSaveStateMenus(QString());
 }
 
 void MainWindow::onEmulationStopped()
@@ -121,6 +120,15 @@ void MainWindow::onPerformanceCountersUpdated(float speed, float fps, float vps,
     QStringLiteral("%1ms average, %2ms worst").arg(average_frame_time, 0, 'f', 2).arg(worst_frame_time, 0, 'f', 2));
 }
 
+void MainWindow::onRunningGameChanged(QString filename, QString game_code, QString game_title)
+{
+  populateLoadSaveStateMenus(game_code);
+  if (game_title.isEmpty())
+    setWindowTitle(tr("DuckStation"));
+  else
+    setWindowTitle(game_title);
+}
+
 void MainWindow::onStartDiscActionTriggered()
 {
   QString filename =
@@ -288,10 +296,11 @@ void MainWindow::connectSignals()
   connect(m_host_interface, &QtHostInterface::emulationStopped, this, &MainWindow::onEmulationStopped);
   connect(m_host_interface, &QtHostInterface::emulationPaused, this, &MainWindow::onEmulationPaused);
   connect(m_host_interface, &QtHostInterface::toggleFullscreenRequested, this, &MainWindow::toggleFullscreen);
-  connect(m_host_interface, &QtHostInterface::performanceCountersUpdated, this,
-          &MainWindow::onPerformanceCountersUpdated);
   connect(m_host_interface, &QtHostInterface::recreateDisplayWidgetRequested, this, &MainWindow::recreateDisplayWidget,
           Qt::BlockingQueuedConnection);
+  connect(m_host_interface, &QtHostInterface::performanceCountersUpdated, this,
+          &MainWindow::onPerformanceCountersUpdated);
+  connect(m_host_interface, &QtHostInterface::runningGameChanged, this, &MainWindow::onRunningGameChanged);
 
   connect(m_game_list_widget, &GameListWidget::bootEntryRequested, [this](const GameListEntry* entry) {
     // if we're not running, boot the system, otherwise swap discs
@@ -370,22 +379,17 @@ void MainWindow::populateLoadSaveStateMenus(QString game_code)
   {
     // TODO: Do we want to test for the existance of these on disk here?
     load_menu->addAction(tr("Global Save %1 (2020-01-01 00:01:02)").arg(i + 1));
-
-    if (m_emulation_running)
     save_menu->addAction(tr("Global Save %1").arg(i + 1));
   }
 
   if (!game_code.isEmpty())
   {
     load_menu->addSeparator();
-    if (m_emulation_running)
     save_menu->addSeparator();
 
     for (int i = 0; i < NUM_SAVE_STATE_SLOTS; i++)
     {
       load_menu->addAction(tr("Game Save %1 (2020-01-01 00:01:02)").arg(i + 1));
-
-      if (m_emulation_running)
       save_menu->addAction(tr("Game Save %1").arg(i + 1));
     }
   }

src/duckstation-qt/mainwindow.h

@@ -9,7 +9,6 @@
 
 class QLabel;
 
-class GameList;
 class GameListWidget;
 class QtHostInterface;
 
@@ -30,6 +29,7 @@ private Q_SLOTS:
   void recreateDisplayWidget(bool create_device_context);
   void onPerformanceCountersUpdated(float speed, float fps, float vps, float average_frame_time,
                                     float worst_frame_time);
+  void onRunningGameChanged(QString filename, QString game_code, QString game_title);
 
   void onStartDiscActionTriggered();
   void onChangeDiscFromFileActionTriggered();
@@ -55,7 +55,6 @@ private:
 
   QtHostInterface* m_host_interface = nullptr;
 
-  std::unique_ptr<GameList> m_game_list;
   GameListWidget* m_game_list_widget = nullptr;
   QWidget* m_display_widget = nullptr;
 

src/duckstation-qt/qthostinterface.cpp

@@ -162,6 +162,7 @@ void QtHostInterface::createGameList()
 
 void QtHostInterface::refreshGameList(bool invalidate_cache /* = false */, bool invalidate_database /* = false */)
 {
+  std::lock_guard<std::mutex> lock(m_qsettings_mutex);
   QtSettingsInterface si(m_qsettings);
   m_game_list->SetPathsFromSettings(si);
   m_game_list->Refresh(invalidate_cache, invalidate_database);
@@ -243,6 +244,13 @@ void QtHostInterface::OnPerformanceCountersUpdated()
   emit performanceCountersUpdated(m_speed, m_fps, m_vps, m_average_frame_time, m_worst_frame_time);
 }
 
+void QtHostInterface::OnRunningGameChanged(const char* path, const char* game_code, const char* game_title)
+{
+  HostInterface::OnRunningGameChanged(path, game_code, game_title);
+
+  emit runningGameChanged(QString::fromUtf8(path), QString::fromUtf8(game_code), QString::fromUtf8(game_title));
+}
+
 void QtHostInterface::updateInputMap()
 {
   if (!isOnWorkerThread())
@@ -390,6 +398,7 @@ void QtHostInterface::powerOffSystem()
   m_audio_stream->PauseOutput(true);
   m_display_window->destroyDeviceContext();
 
+  emit runningGameChanged(QString(), QString(), QString());
   emit emulationStopped();
 }
 
@@ -437,6 +446,7 @@ void QtHostInterface::doBootSystem(QString initial_filename, QString initial_sav
 
   std::string initial_filename_str = initial_filename.toStdString();
   std::string initial_save_state_filename_str = initial_save_state_filename.toStdString();
+  std::lock_guard<std::mutex> lock(m_qsettings_mutex);
   if (!CreateSystem() ||
       !BootSystem(initial_filename_str.empty() ? nullptr : initial_filename_str.c_str(),
                   initial_save_state_filename_str.empty() ? nullptr : initial_save_state_filename_str.c_str()))
@@ -501,6 +511,7 @@ void QtHostInterface::switchGPURenderer()
   {
     if (!m_display_window->initializeDeviceContext(m_settings.gpu_use_debug_device))
     {
+      emit runningGameChanged(QString(), QString(), QString());
       emit emulationStopped();
       return;
     }

src/duckstation-qt/qthostinterface.h

@@ -70,6 +70,7 @@ Q_SIGNALS:
   void toggleFullscreenRequested();
   void recreateDisplayWidgetRequested(bool create_device_context);
   void performanceCountersUpdated(float speed, float fps, float vps, float avg_frame_time, float worst_frame_time);
+  void runningGameChanged(QString filename, QString game_code, QString game_title);
 
 public Q_SLOTS:
   void applySettings();
@@ -87,6 +88,7 @@ private Q_SLOTS:
 
 protected:
   void OnPerformanceCountersUpdated() override;
+  void OnRunningGameChanged(const char* path, const char* game_code, const char* game_title) override;
 
 private:
   using InputButtonHandler = std::function<void(bool)>;
@@ -126,8 +128,6 @@ private:
   QSettings m_qsettings;
   std::mutex m_qsettings_mutex;
 
-  std::unique_ptr<GameList> m_game_list;
-
   QtDisplayWindow* m_display_window = nullptr;
   QThread* m_original_thread = nullptr;
   Thread* m_worker_thread = nullptr;