Qt: Add Discord Rich Presence support

PCSX2_qt.sln

@@ -61,6 +61,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "rcheevos", "3rdparty\rcheev
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "rainterface", "3rdparty\rainterface\rainterface.vcxproj", "{95DD0A0C-D14D-4CFF-A593-820EF26EFCC8}"
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "discord-rpc", "3rdparty\discord-rpc\discord-rpc.vcxproj", "{E960DFDF-1BD3-4C29-B251-D1A0919C9B09}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug AVX2|x64 = Debug AVX2|x64
@@ -407,6 +409,18 @@ Global
 		{95DD0A0C-D14D-4CFF-A593-820EF26EFCC8}.Release AVX2|x64.Build.0 = Release|x64
 		{95DD0A0C-D14D-4CFF-A593-820EF26EFCC8}.Release|x64.ActiveCfg = Release|x64
 		{95DD0A0C-D14D-4CFF-A593-820EF26EFCC8}.Release|x64.Build.0 = Release|x64
+		{E960DFDF-1BD3-4C29-B251-D1A0919C9B09}.Debug AVX2|x64.ActiveCfg = Debug|x64
+		{E960DFDF-1BD3-4C29-B251-D1A0919C9B09}.Debug AVX2|x64.Build.0 = Debug|x64
+		{E960DFDF-1BD3-4C29-B251-D1A0919C9B09}.Debug|x64.ActiveCfg = Debug|x64
+		{E960DFDF-1BD3-4C29-B251-D1A0919C9B09}.Debug|x64.Build.0 = Debug|x64
+		{E960DFDF-1BD3-4C29-B251-D1A0919C9B09}.Devel AVX2|x64.ActiveCfg = Devel|x64
+		{E960DFDF-1BD3-4C29-B251-D1A0919C9B09}.Devel AVX2|x64.Build.0 = Devel|x64
+		{E960DFDF-1BD3-4C29-B251-D1A0919C9B09}.Devel|x64.ActiveCfg = Devel|x64
+		{E960DFDF-1BD3-4C29-B251-D1A0919C9B09}.Devel|x64.Build.0 = Devel|x64
+		{E960DFDF-1BD3-4C29-B251-D1A0919C9B09}.Release AVX2|x64.ActiveCfg = Release|x64
+		{E960DFDF-1BD3-4C29-B251-D1A0919C9B09}.Release AVX2|x64.Build.0 = Release|x64
+		{E960DFDF-1BD3-4C29-B251-D1A0919C9B09}.Release|x64.ActiveCfg = Release|x64
+		{E960DFDF-1BD3-4C29-B251-D1A0919C9B09}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -436,6 +450,7 @@ Global
 		{7E183337-A7E9-460C-9D3D-568BC9F9BCC1} = {78EBE642-7A4D-4EA7-86BE-5639C6646C38}
 		{6D5B5AD9-1525-459B-939F-A5E1082AF6B3} = {78EBE642-7A4D-4EA7-86BE-5639C6646C38}
 		{95DD0A0C-D14D-4CFF-A593-820EF26EFCC8} = {78EBE642-7A4D-4EA7-86BE-5639C6646C38}
+		{E960DFDF-1BD3-4C29-B251-D1A0919C9B09} = {78EBE642-7A4D-4EA7-86BE-5639C6646C38}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {0BC474EA-3628-45D3-9DBC-E22D0B7E0F77}

cmake/BuildParameters.cmake

@@ -39,6 +39,7 @@ endif()
 
 option(USE_VTUNE "Plug VTUNE to profile GS JIT.")
 option(USE_ACHIEVEMENTS "Build with RetroAchievements support" ON)
+option(USE_DISCORD_PRESENCE "Enable support for Discord Rich Presence" ON)
 
 #-------------------------------------------------------------------------------
 # Graphical option

cmake/SearchForStuff.cmake

@@ -239,6 +239,12 @@ if(QT_BUILD)
 	if(USE_ACHIEVEMENTS)
 		add_subdirectory(3rdparty/rcheevos EXCLUDE_FROM_ALL)
 	endif()
+
+	# Discord-RPC library for rich presence.
+	if(USE_DISCORD_PRESENCE)
+		add_subdirectory(3rdparty/rapidjson EXCLUDE_FROM_ALL)
+		add_subdirectory(3rdparty/discord-rpc EXCLUDE_FROM_ALL)
+	endif()
 endif()
 
 if(NOT WIN32 AND QT_BUILD)

pcsx2-qt/Settings/InterfaceSettingsWidget.cpp

@@ -97,6 +97,12 @@ InterfaceSettingsWidget::InterfaceSettingsWidget(SettingsDialog* dialog, QWidget
 		m_ui.automaticUpdaterGroup->hide();
 	}
 
+#ifdef ENABLE_DISCORD_PRESENCE
+	SettingWidgetBinder::BindWidgetToBoolSetting(sif, m_ui.discordPresence, "EmuCore", "EnableDiscordPresence", false);
+#else
+	m_ui.discordPresence->setEnabled(false);
+#endif
+
 	dialog->registerWidgetHelp(
 		m_ui.confirmShutdown, tr("Confirm Shutdown"), tr("Checked"),
 		tr("Determines whether a prompt will be displayed to confirm shutting down the virtual machine "
@@ -119,6 +125,9 @@ InterfaceSettingsWidget::InterfaceSettingsWidget(SettingsDialog* dialog, QWidget
 	dialog->registerWidgetHelp(
 		m_ui.hideMainWindow, tr("Hide Main Window When Running"), tr("Unchecked"),
 		tr("Hides the main window (with the game list) when a game is running, requires Render To Separate Window to be enabled."));
+	dialog->registerWidgetHelp(
+		m_ui.discordPresence, tr("Enable Discord Presence"), tr("Unchecked"),
+		tr("Shows the game you are currently playing as part of your profile in Discord."));
 
 	// Not yet used, disable the options
 	m_ui.language->setDisabled(true);

pcsx2-qt/Settings/InterfaceSettingsWidget.ui

@@ -67,6 +67,13 @@
         </property>
        </widget>
       </item>
+      <item row="3" column="1">
+       <widget class="QCheckBox" name="discordPresence">
+        <property name="text">
+         <string>Enable Discord Presence</string>
+        </property>
+       </widget>
+      </item>
      </layout>
     </widget>
    </item>

pcsx2-qt/pcsx2-qt.vcxproj

@@ -51,7 +51,7 @@
       <PrecompiledHeader>Use</PrecompiledHeader>
       <PrecompiledHeaderFile>PrecompiledHeader.h</PrecompiledHeaderFile>
       <EnableEnhancedInstructionSet>NoExtensions</EnableEnhancedInstructionSet>
-      <PreprocessorDefinitions>WIN32_LEAN_AND_MEAN;LZMA_API_STATIC;BUILD_DX=1;ENABLE_RAINTEGRATION;ENABLE_ACHIEVEMENTS;ENABLE_OPENGL;ENABLE_VULKAN;DIRECTINPUT_VERSION=0x0800;PCSX2_CORE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32_LEAN_AND_MEAN;LZMA_API_STATIC;BUILD_DX=1;ENABLE_RAINTEGRATION;ENABLE_ACHIEVEMENTS;ENABLE_DISCORD_PRESENCE;ENABLE_OPENGL;ENABLE_VULKAN;DIRECTINPUT_VERSION=0x0800;PCSX2_CORE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PreprocessorDefinitions Condition="$(Configuration.Contains(Debug))">PCSX2_DEBUG;PCSX2_DEVBUILD;_SECURE_SCL_=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PreprocessorDefinitions Condition="$(Configuration.Contains(Devel))">PCSX2_DEVEL;PCSX2_DEVBUILD;NDEBUG;_SECURE_SCL_=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PreprocessorDefinitions Condition="$(Configuration.Contains(Release))">NDEBUG;_SECURE_SCL_=0;%(PreprocessorDefinitions)</PreprocessorDefinitions>

pcsx2/CMakeLists.txt

@@ -1106,6 +1106,14 @@ if(PCSX2_CORE)
 			rcheevos
 		)
 	endif()
+	if(USE_DISCORD_PRESENCE)
+		target_compile_definitions(PCSX2_FLAGS INTERFACE
+			ENABLE_DISCORD_PRESENCE
+		)
+		target_link_libraries(PCSX2_FLAGS INTERFACE
+			discord-rpc
+		)
+	endif()
 endif()
 
 # gui sources

pcsx2/Config.h

@@ -990,6 +990,7 @@ struct Pcsx2Config
 #ifdef PCSX2_CORE
 		EnableGameFixes : 1, // enables automatic game fixes
 		SaveStateOnShutdown : 1, // default value for saving state on shutdown
+		EnableDiscordPresence : 1, // enables discord rich presence integration
 #endif
 		// when enabled uses BOOT2 injection, skipping sony bios splashes
 		UseBOOT2Injection : 1,

pcsx2/Frontend/Achievements.cpp

@@ -16,6 +16,7 @@
 #include "PrecompiledHeader.h"
 
 #include "Frontend/Achievements.h"
+#include "Frontend/CommonHost.h"
 #include "Frontend/FullscreenUI.h"
 #include "Frontend/ImGuiFullscreen.h"
 
@@ -394,6 +395,11 @@ void Achievements::ClearGameInfo(bool clear_achievements, bool clear_leaderboard
 		s_rich_presence_string = {};
 		s_has_rich_presence = false;
 		s_game_id = 0;
+
+#ifdef ENABLE_DISCORD_PRESENCE
+		if (EmuConfig.EnableDiscordPresence)
+			CommonHost::UpdateDiscordPresence(s_rich_presence_string);
+#endif
 	}
 
 	if (had_game)
@@ -1499,22 +1505,30 @@ void Achievements::UpdateRichPresence()
 
 	char buffer[512];
 	const int res = rc_runtime_get_richpresence(&s_rcheevos_runtime, buffer, sizeof(buffer), PeekMemory, nullptr, nullptr);
-	if (res <= 0)
-	{
-		const bool had_rich_presence = !s_rich_presence_string.empty();
-		s_rich_presence_string.clear();
-		if (had_rich_presence)
-			Host::OnAchievementsRefreshed();
-
-		return;
-	}
 
 	std::unique_lock lock(s_achievements_mutex);
+	const bool had_rich_presence = !s_rich_presence_string.empty();
+	if (res <= 0)
+	{
+		if (!had_rich_presence)
+			return;
+
+		s_rich_presence_string.clear();
+	}
+	else
+	{
 		if (s_rich_presence_string == buffer)
 			return;
 
 		s_rich_presence_string.assign(buffer);
+	}
+
 	Host::OnAchievementsRefreshed();
+
+#ifdef ENABLE_DISCORD_PRESENCE
+	if (EmuConfig.EnableDiscordPresence)
+		CommonHost::UpdateDiscordPresence(s_rich_presence_string);
+#endif
 }
 
 void Achievements::SendPingCallback(s32 status_code, const std::string& content_type, Common::HTTPDownloader::Request::Data data)

pcsx2/Frontend/CommonHost.cpp

@@ -40,6 +40,10 @@
 #include "Frontend/Achievements.h"
 #endif
 
+#ifdef ENABLE_DISCORD_PRESENCE
+#include "discord_rpc.h"
+#endif
+
 #ifdef _WIN32
 #include "common/RedtapeWindows.h"
 #include <KnownFolders.h>
@@ -55,8 +59,19 @@ namespace CommonHost
 	static bool ShouldUsePortableMode();
 	static void SetDataDirectory();
 	static void SetCommonDefaultSettings(SettingsInterface& si);
+
+#ifdef ENABLE_DISCORD_PRESENCE
+	static void InitializeDiscordPresence();
+	static void ShutdownDiscordPresence();
+	static void PollDiscordPresence();
+	static std::string GetRichPresenceString();
+#endif
 } // namespace CommonHost
 
+#ifdef ENABLE_DISCORD_PRESENCE
+static bool s_discord_presence_active = false;
+#endif
+
 bool CommonHost::InitializeCriticalFolders()
 {
 	SetAppRoot();
@@ -237,10 +252,19 @@ void CommonHost::CPUThreadInitialize()
 	if (EmuConfig.Achievements.Enabled)
 		Achievements::Initialize();
 #endif
+
+#ifdef ENABLE_DISCORD_PRESENCE
+	if (EmuConfig.EnableDiscordPresence)
+		InitializeDiscordPresence();
+#endif
 }
 
 void CommonHost::CPUThreadShutdown()
 {
+#ifdef ENABLE_DISCORD_PRESENCE
+	ShutdownDiscordPresence();
+#endif
+
 #ifdef ENABLE_ACHIEVEMENTS
 	Achievements::Shutdown();
 #endif
@@ -269,6 +293,16 @@ void CommonHost::CheckForSettingsChanges(const Pcsx2Config& old_config)
 #endif
 
 	FullscreenUI::CheckForConfigChanges(old_config);
+
+#ifdef ENABLE_DISCORD_PRESENCE
+	if (EmuConfig.EnableDiscordPresence != old_config.EnableDiscordPresence)
+	{
+		if (EmuConfig.EnableDiscordPresence)
+			InitializeDiscordPresence();
+		else
+			ShutdownDiscordPresence();
+	}
+#endif
 }
 
 void CommonHost::OnVMStarting()
@@ -317,6 +351,10 @@ void CommonHost::OnGameChanged(const std::string& disc_path, const std::string&
 #ifdef ENABLE_ACHIEVEMENTS
 	Achievements::GameChanged(game_crc);
 #endif
+
+#ifdef ENABLE_DISCORD_PRESENCE
+	UpdateDiscordPresence(GetRichPresenceString());
+#endif
 }
 
 void CommonHost::CPUThreadVSync()
@@ -326,6 +364,10 @@ void CommonHost::CPUThreadVSync()
 		Achievements::VSyncUpdate();
 #endif
 
+#ifdef ENABLE_DISCORD_PRESENCE
+	PollDiscordPresence();
+#endif
+
 	InputManager::PollSources();
 }
 
@@ -352,3 +394,86 @@ bool Host::GetSerialAndCRCForFilename(const char* filename, std::string* serial,
 
 	return false;
 }
+
+#ifdef ENABLE_DISCORD_PRESENCE
+
+void CommonHost::InitializeDiscordPresence()
+{
+	if (s_discord_presence_active)
+		return;
+
+	DiscordEventHandlers handlers = {};
+	Discord_Initialize("1025789002055430154", &handlers, 0, nullptr);
+	s_discord_presence_active = true;
+
+	UpdateDiscordPresence(GetRichPresenceString());
+}
+
+void CommonHost::ShutdownDiscordPresence()
+{
+	if (!s_discord_presence_active)
+		return;
+
+	Discord_ClearPresence();
+	Discord_RunCallbacks();
+	Discord_Shutdown();
+	s_discord_presence_active = false;
+}
+
+void CommonHost::UpdateDiscordPresence(const std::string& rich_presence)
+{
+	if (!s_discord_presence_active)
+		return;
+
+	// https://discord.com/developers/docs/rich-presence/how-to#updating-presence-update-presence-payload-fields
+	DiscordRichPresence rp = {};
+	rp.largeImageKey = "4k-pcsx2";
+	rp.largeImageText = "PCSX2 Emulator";
+	rp.startTimestamp = std::time(nullptr);
+
+	std::string details_string;
+	if (VMManager::HasValidVM())
+		details_string = VMManager::GetGameName();
+	else
+		details_string = "No Game Running";
+	rp.details = details_string.c_str();
+
+	// Trim to 128 bytes as per Discord-RPC requirements
+	std::string state_string;
+	if (rich_presence.length() >= 128)
+	{
+		// 124 characters + 3 dots + null terminator
+		state_string = fmt::format("{}...", std::string_view(rich_presence).substr(0, 124));
+	}
+	else
+	{
+		state_string = rich_presence;
+	}
+	rp.state = state_string.c_str();
+
+	Discord_UpdatePresence(&rp);
+	Discord_RunCallbacks();
+}
+
+void CommonHost::PollDiscordPresence()
+{
+	if (!s_discord_presence_active)
+		return;
+
+	Discord_RunCallbacks();
+}
+
+std::string CommonHost::GetRichPresenceString()
+{
+	std::string rich_presence_string;
+#ifdef ENABLE_ACHIEVEMENTS
+	if (Achievements::IsActive() && EmuConfig.Achievements.RichPresence)
+	{
+		auto lock = Achievements::GetLock();
+		rich_presence_string = Achievements::GetRichPresenceString();
+	}
+#endif
+	return rich_presence_string;
+}
+
+#endif

pcsx2/Frontend/CommonHost.h

@@ -76,6 +76,11 @@ namespace CommonHost
 	/// Provided by the host; called once per frame at guest vsync.
 	void CPUThreadVSync();
 
+#ifdef ENABLE_DISCORD_PRESENCE
+	/// Called when the rich presence string, provided by RetroAchievements, changes.
+	void UpdateDiscordPresence(const std::string& rich_presence);
+#endif
+
 	namespace Internal
 	{
 		/// Resets any state for hotkey-related VMs, called on VM startup.

pcsx2/Pcsx2Config.cpp

@@ -1100,6 +1100,7 @@ void Pcsx2Config::LoadSave(SettingsWrapper& wrap)
 #ifdef PCSX2_CORE
 	SettingsWrapBitBool(EnableGameFixes);
 	SettingsWrapBitBool(SaveStateOnShutdown);
+	SettingsWrapBitBool(EnableDiscordPresence);
 #endif
 	SettingsWrapBitBool(ConsoleToStdio);
 	SettingsWrapBitBool(HostFs);

pcsx2/VMManager.cpp

@@ -119,7 +119,7 @@ static Threading::ThreadHandle s_vm_thread_handle;
 static std::deque<std::thread> s_save_state_threads;
 static std::mutex s_save_state_threads_mutex;
 
-static std::mutex s_info_mutex;
+static std::recursive_mutex s_info_mutex;
 static std::string s_disc_path;
 static u32 s_game_crc;
 static u32 s_patches_crc;

pcsx2/pcsx2core.vcxproj

@@ -51,13 +51,14 @@
       <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(SolutionDir)3rdparty\cpuinfo\include</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(SolutionDir)3rdparty\rapidyaml\rapidyaml\ext\c4core\src\c4\ext\fast_float\include</AdditionalIncludeDirectories>
       <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(SolutionDir)3rdparty\rcheevos\rcheevos\include;$(SolutionDir)3rdparty\rainterface</AdditionalIncludeDirectories>
+      <AdditionalIncludeDirectories>%(AdditionalIncludeDirectories);$(SolutionDir)3rdparty\discord-rpc\include</AdditionalIncludeDirectories>
       <ExceptionHandling>Async</ExceptionHandling>
       <PrecompiledHeader>Use</PrecompiledHeader>
       <PrecompiledHeaderFile>PrecompiledHeader.h</PrecompiledHeaderFile>
       <ForcedIncludeFiles>PrecompiledHeader.h;%(ForcedIncludeFiles)</ForcedIncludeFiles>
       <EnableEnhancedInstructionSet>NoExtensions</EnableEnhancedInstructionSet>
       <AdditionalOptions>/Zc:externConstexpr %(AdditionalOptions)</AdditionalOptions>
-      <PreprocessorDefinitions>WIN32_LEAN_AND_MEAN;ZIP_STATIC;LZMA_API_STATIC;BUILD_DX=1;ENABLE_RAINTEGRATION;ENABLE_ACHIEVEMENTS;ENABLE_OPENGL;ENABLE_VULKAN;SPU2X_CUBEB;SDL_BUILD;PCSX2_CORE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PreprocessorDefinitions>WIN32_LEAN_AND_MEAN;ZIP_STATIC;LZMA_API_STATIC;BUILD_DX=1;ENABLE_DISCORD_PRESENCE;ENABLE_RAINTEGRATION;ENABLE_ACHIEVEMENTS;ENABLE_OPENGL;ENABLE_VULKAN;SPU2X_CUBEB;SDL_BUILD;PCSX2_CORE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PreprocessorDefinitions Condition="$(Configuration.Contains(Debug))">PCSX2_DEBUG;PCSX2_DEVBUILD;_SECURE_SCL_=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PreprocessorDefinitions Condition="$(Configuration.Contains(Devel))">PCSX2_DEVEL;PCSX2_DEVBUILD;NDEBUG;_SECURE_SCL_=1;%(PreprocessorDefinitions)</PreprocessorDefinitions>
       <PreprocessorDefinitions Condition="$(Configuration.Contains(Release))">NDEBUG;_SECURE_SCL_=0;%(PreprocessorDefinitions)</PreprocessorDefinitions>
@@ -805,6 +806,9 @@
     <ProjectReference Include="$(SolutionDir)3rdparty\imgui\imgui.vcxproj">
       <Project>{88fb34ec-845e-4f21-a552-f1573b9ed167}</Project>
     </ProjectReference>
+    <ProjectReference Include="..\3rdparty\discord-rpc\discord-rpc.vcxproj">
+      <Project>{e960dfdf-1bd3-4c29-b251-d1a0919c9b09}</Project>
+    </ProjectReference>
     <ProjectReference Include="..\3rdparty\libzip\libzip.vcxproj">
       <Project>{20b2e9fe-f020-42a0-b324-956f5b06ea68}</Project>
     </ProjectReference>