Play bootSound.btsnd while shaders/pipelines are compiling (#1047)

src/Cafe/HW/Latte/Core/LatteShaderCache.cpp

@@ -25,6 +25,9 @@
 #include "util/helpers/Serializer.h"
 
 #include <wx/msgdlg.h>
+#include <audio/IAudioAPI.h>
+#include <util/bootSound/BootSoundReader.h>
+#include <thread>
 
 #if BOOST_OS_WINDOWS
 #include <psapi.h>
@@ -155,6 +158,118 @@ bool LoadTGAFile(const std::vector<uint8>& buffer, TGAFILE *tgaFile)
 	return true;
 }
 
+class BootSoundPlayer
+{
+  public:
+	BootSoundPlayer() = default;
+	~BootSoundPlayer()
+	{
+		m_stopRequested = true;
+	}
+
+	void StartSound()
+	{
+		if (!m_bootSndPlayThread.joinable())
+		{
+			m_fadeOutRequested = false;
+			m_stopRequested = false;
+			m_bootSndPlayThread = std::thread{[this]() {
+				StreamBootSound();
+			}};
+		}
+	}
+
+	void FadeOutSound()
+	{
+		m_fadeOutRequested = true;
+	}
+
+	void ApplyFadeOutEffect(std::span<sint16> samples, uint64& fadeOutSample, uint64 fadeOutDuration)
+	{
+		for (size_t i = 0; i < samples.size(); i += 2)
+		{
+			const float decibel = (float)fadeOutSample / fadeOutDuration * -60.0f;
+			const float volumeFactor = pow(10, decibel / 20);
+			samples[i] *= volumeFactor;
+			samples[i + 1] *= volumeFactor;
+			fadeOutSample++;
+		}
+	}
+
+	void StreamBootSound()
+	{
+		SetThreadName("bootsnd");
+		constexpr sint32 sampleRate = 48'000;
+		constexpr sint32 bitsPerSample = 16;
+		constexpr sint32 samplesPerBlock = sampleRate / 10; // block is 1/10th of a second
+		constexpr sint32 nChannels = 2;
+		static_assert(bitsPerSample % 8 == 0, "bits per sample is not a multiple of 8");
+
+		AudioAPIPtr bootSndAudioDev;
+
+		try
+		{
+			bootSndAudioDev = IAudioAPI::CreateDeviceFromConfig(true, sampleRate, nChannels, samplesPerBlock, bitsPerSample);
+			if(!bootSndAudioDev)
+				return;
+		}
+		catch (const std::runtime_error& ex)
+		{
+			cemuLog_log(LogType::Force, "Failed to initialise audio device for bootup sound");
+			return;
+		}
+		bootSndAudioDev->SetAudioDelayOverride(4);
+		bootSndAudioDev->Play();
+
+		std::string sndPath = fmt::format("{}/meta/{}", CafeSystem::GetMlcStoragePath(CafeSystem::GetForegroundTitleId()), "bootSound.btsnd");
+		sint32 fscStatus = FSC_STATUS_UNDEFINED;
+
+		if(!fsc_doesFileExist(sndPath.c_str()))
+			return;
+
+		FSCVirtualFile* bootSndFileHandle = fsc_open(sndPath.c_str(), FSC_ACCESS_FLAG::OPEN_FILE | FSC_ACCESS_FLAG::READ_PERMISSION, &fscStatus);
+		if(!bootSndFileHandle)
+		{
+			cemuLog_log(LogType::Force, "failed to open bootSound.btsnd");
+			return;
+		}
+
+		constexpr sint32 audioBlockSize = samplesPerBlock * (bitsPerSample/8) * nChannels;
+		BootSoundReader bootSndFileReader(bootSndFileHandle, audioBlockSize);
+
+		uint64 fadeOutSample = 0; // track how far into the fadeout
+		constexpr uint64 fadeOutDuration = sampleRate * 2; // fadeout should last 2 seconds
+		while(fadeOutSample < fadeOutDuration && !m_stopRequested)
+		{
+			while (bootSndAudioDev->NeedAdditionalBlocks())
+			{
+				sint16* data = bootSndFileReader.getSamples();
+				if(data == nullptr)
+				{
+					// break outer loop
+					m_stopRequested = true;
+					break;
+				}
+				if(m_fadeOutRequested)
+					ApplyFadeOutEffect({data, samplesPerBlock * nChannels}, fadeOutSample, fadeOutDuration);
+
+				bootSndAudioDev->FeedBlock(data);
+			}
+			// sleep for the duration of a single block
+			std::this_thread::sleep_for(std::chrono::milliseconds(samplesPerBlock / (sampleRate/ 1'000)));
+		}
+
+		if(bootSndFileHandle)
+			fsc_close(bootSndFileHandle);
+	}
+
+  private:
+	std::thread m_bootSndPlayThread;
+	std::atomic_bool m_fadeOutRequested = false;
+	std::atomic_bool m_stopRequested = false;
+};
+static BootSoundPlayer g_bootSndPlayer;
+
 void LatteShaderCache_finish()
 {
 	if (g_renderer->GetType() == RendererAPI::Vulkan)
@@ -299,6 +414,9 @@ void LatteShaderCache_Load()
 	loadBackgroundTexture(true, g_shaderCacheLoaderState.textureTVId);
 	loadBackgroundTexture(false, g_shaderCacheLoaderState.textureDRCId);
 
+	if(GetConfig().play_boot_sound)
+		g_bootSndPlayer.StartSound();
+
 	sint32 numLoadedShaders = 0;
 	uint32 loadIndex = 0;
 
@@ -365,6 +483,8 @@ void LatteShaderCache_Load()
 		g_renderer->DeleteTexture(g_shaderCacheLoaderState.textureTVId);
 	if (g_shaderCacheLoaderState.textureDRCId)
 		g_renderer->DeleteTexture(g_shaderCacheLoaderState.textureDRCId);
+
+	g_bootSndPlayer.FadeOutSound();
 }
 
 void LatteShaderCache_ShowProgress(const std::function <bool(void)>& loadUpdateFunc, bool isPipelines)
@@ -805,4 +925,4 @@ void LatteShaderCache_handleDeprecatedCacheFiles(fs::path pathGeneric, fs::path
 			fs::remove(pathGenericPre1_25_0, ec);
 		}
 	}
-}
+}

src/Cafe/OS/libs/snd_core/ax_out.cpp

@@ -396,90 +396,35 @@ namespace snd_core
 
 	void AXOut_init()
 	{
-		auto& config = GetConfig();
-		const auto audio_api = (IAudioAPI::AudioAPI)config.audio_api;
 
 		numQueuedFramesSndGeneric = 0;
 
 		std::unique_lock lock(g_audioMutex);
 		if (!g_tvAudio)
 		{
-			sint32 channels;
-			switch (config.tv_channels)
+			try
 			{
-			case 0:
-				channels = 1; // will mix mono sound on both output channels
-				break;
-			case 2:
-				channels = 6;
-				break;
-			default: // stereo
-				channels = 2;
-				break;
+				g_tvAudio = IAudioAPI::CreateDeviceFromConfig(true, 48000, snd_core::AX_SAMPLES_PER_3MS_48KHZ * AX_FRAMES_PER_GROUP, 16);
 			}
-
-			IAudioAPI::DeviceDescriptionPtr device_description;
-			if (IAudioAPI::IsAudioAPIAvailable(audio_api))
+			catch (std::runtime_error& ex)
 			{
-				auto devices = IAudioAPI::GetDevices(audio_api);
-				const auto it = std::find_if(devices.begin(), devices.end(), [&config](const auto& d) {return d->GetIdentifier() == config.tv_device; });
-				if (it != devices.end())
-					device_description = *it;
-			}
-
-			if (device_description)
-			{
-				try
-				{
-					g_tvAudio = IAudioAPI::CreateDevice((IAudioAPI::AudioAPI)config.audio_api, device_description, 48000, channels, snd_core::AX_SAMPLES_PER_3MS_48KHZ * AX_FRAMES_PER_GROUP, 16);
-					g_tvAudio->SetVolume(config.tv_volume);
-				}
-				catch (std::runtime_error& ex)
-				{
-					cemuLog_log(LogType::Force, "can't initialize tv audio: {}", ex.what());
-					exit(0);
-				}
+				cemuLog_log(LogType::Force, "can't initialize tv audio: {}", ex.what());
+				exit(0);
 			}
 		}
 
 		if (!g_padAudio)
 		{
-			sint32 channels;
-			switch (config.pad_channels)
+			try
 			{
-			case 0:
-				channels = 1; // will mix mono sound on both output channels
-				break;
-			case 2:
-				channels = 6;
-				break;
-			default: // stereo
-				channels = 2;
-				break;
+				g_padAudio = IAudioAPI::CreateDeviceFromConfig(false, 48000, snd_core::AX_SAMPLES_PER_3MS_48KHZ * AX_FRAMES_PER_GROUP, 16);
+				if(g_padAudio)
+					g_padVolume = g_padAudio->GetVolume();
 			}
-
-			IAudioAPI::DeviceDescriptionPtr device_description;
-			if (IAudioAPI::IsAudioAPIAvailable(audio_api))
+			catch (std::runtime_error& ex)
 			{
-				auto devices = IAudioAPI::GetDevices(audio_api);
-				const auto it = std::find_if(devices.begin(), devices.end(), [&config](const auto& d) {return d->GetIdentifier() == config.pad_device; });
-				if (it != devices.end())
-					device_description = *it;
-			}
-
-			if (device_description)
-			{
-				try
-				{
-					g_padAudio = IAudioAPI::CreateDevice((IAudioAPI::AudioAPI)config.audio_api, device_description, 48000, channels, snd_core::AX_SAMPLES_PER_3MS_48KHZ * AX_FRAMES_PER_GROUP, 16);
-					g_padAudio->SetVolume(config.pad_volume);
-					g_padVolume = config.pad_volume;
-				}
-				catch (std::runtime_error& ex)
-				{
-					cemuLog_log(LogType::Force, "can't initialize pad audio: {}", ex.what());
-					exit(0);
-				}
+				cemuLog_log(LogType::Force, "can't initialize pad audio: {}", ex.what());
+				exit(0);
 			}
 		}
 	}

src/audio/CubebAPI.cpp

@@ -114,7 +114,7 @@ CubebAPI::~CubebAPI()
 bool CubebAPI::NeedAdditionalBlocks() const
 {
 	std::shared_lock lock(m_mutex);
-	return m_buffer.size() < s_audioDelay * m_bytesPerBlock;
+	return m_buffer.size() < GetAudioDelay() * m_bytesPerBlock;
 }
 
 bool CubebAPI::FeedBlock(sint16* data)

src/audio/DirectSoundAPI.cpp

@@ -210,7 +210,7 @@ void DirectSoundAPI::SetVolume(sint32 volume)
 bool DirectSoundAPI::NeedAdditionalBlocks() const
 {
 	std::shared_lock lock(m_mutex);
-	return m_buffer.size() < s_audioDelay;
+	return m_buffer.size() < GetAudioDelay();
 }
 
 std::vector<DirectSoundAPI::DeviceDescriptionPtr> DirectSoundAPI::GetDevices()

src/audio/IAudioAPI.cpp

@@ -97,7 +97,40 @@ bool IAudioAPI::IsAudioAPIAvailable(AudioAPI api)
 	return false;
 }
 
+AudioAPIPtr IAudioAPI::CreateDeviceFromConfig(bool TV, sint32 rate, sint32 samples_per_block, sint32 bits_per_sample)
+{
+	auto& config = GetConfig();
+	sint32 channels = CemuConfig::AudioChannelsToNChannels(TV ? config.tv_channels : config.pad_channels);
+	return CreateDeviceFromConfig(TV, rate, channels, samples_per_block, bits_per_sample);
+}
 
+AudioAPIPtr IAudioAPI::CreateDeviceFromConfig(bool TV, sint32 rate, sint32 channels, sint32 samples_per_block, sint32 bits_per_sample)
+{
+	AudioAPIPtr audioAPIDev;
+
+	auto& config = GetConfig();
+
+	const auto audio_api = (IAudioAPI::AudioAPI)config.audio_api;
+	auto& selectedDevice = TV ? config.tv_device : config.pad_device;
+
+	if(selectedDevice.empty())
+		return {};
+
+	IAudioAPI::DeviceDescriptionPtr device_description;
+	if (IAudioAPI::IsAudioAPIAvailable(audio_api))
+	{
+		auto devices = IAudioAPI::GetDevices(audio_api);
+		const auto it = std::find_if(devices.begin(), devices.end(), [&selectedDevice](const auto& d) {return d->GetIdentifier() == selectedDevice; });
+		if (it != devices.end())
+			device_description = *it;
+	}
+	if (!device_description)
+		throw std::runtime_error("failed to find selected device while trying to create audio device");
+
+	audioAPIDev = CreateDevice(audio_api, device_description, rate, channels, samples_per_block, bits_per_sample);
+	audioAPIDev->SetVolume(TV ? config.tv_volume : config.pad_volume);
+	return audioAPIDev;
+}
 
 AudioAPIPtr IAudioAPI::CreateDevice(AudioAPI api, const DeviceDescriptionPtr& device, sint32 samplerate, sint32 channels, sint32 samples_per_block, sint32 bits_per_sample)
 {
@@ -167,3 +200,12 @@ std::vector<IAudioAPI::DeviceDescriptionPtr> IAudioAPI::GetDevices(AudioAPI api)
 	}
 }
 
+void IAudioAPI::SetAudioDelayOverride(uint32 delay)
+{
+	m_audioDelayOverride = delay;
+}
+
+uint32 IAudioAPI::GetAudioDelay() const
+{
+	return m_audioDelayOverride > 0 ? m_audioDelayOverride : s_audioDelay;
+}

src/audio/IAudioAPI.h

@@ -55,11 +55,15 @@ public:
 	virtual bool FeedBlock(sint16* data) = 0;
 	virtual bool Play() = 0;
 	virtual bool Stop() = 0;
+	void SetAudioDelayOverride(uint32 delay);
+	uint32 GetAudioDelay() const;
 
 	static void PrintLogging();
 	static void InitializeStatic();
 	static bool IsAudioAPIAvailable(AudioAPI api);
-	
+
+	static std::unique_ptr<IAudioAPI> CreateDeviceFromConfig(bool TV, sint32 rate, sint32 samples_per_block, sint32 bits_per_sample);
+	static std::unique_ptr<IAudioAPI> CreateDeviceFromConfig(bool TV, sint32 rate, sint32 channels, sint32 samples_per_block, sint32 bits_per_sample);
 	static std::unique_ptr<IAudioAPI> CreateDevice(AudioAPI api, const DeviceDescriptionPtr& device, sint32 samplerate, sint32 channels, sint32 samples_per_block, sint32 bits_per_sample);
 	static std::vector<DeviceDescriptionPtr> GetDevices(AudioAPI api);
 
@@ -75,9 +79,10 @@ protected:
 	bool m_playing = false;
 
 	static std::array<bool, AudioAPIEnd> s_availableApis;
-	static uint32 s_audioDelay;
+	uint32 m_audioDelayOverride = 0;
 
 private:
+	static uint32 s_audioDelay;
 	void InitWFX(sint32 samplerate, sint32 channels, sint32 bits_per_sample);
 	
 };

src/audio/XAudio27API.cpp

@@ -33,8 +33,8 @@ XAudio27API::XAudio27API(uint32 device_id, uint32 samplerate, uint32 channels, u
 	m_wfx.Format.nChannels = channels;
 	m_wfx.Format.nSamplesPerSec = samplerate;
 	m_wfx.Format.wBitsPerSample = bits_per_sample;
-	m_wfx.Format.nBlockAlign = (m_wfx.Format.nChannels * m_wfx.Format.wBitsPerSample) / 8; // must equal (nChannels × wBitsPerSample) / 8
-	m_wfx.Format.nAvgBytesPerSec = m_wfx.Format.nSamplesPerSec * m_wfx.Format.nBlockAlign; // must equal nSamplesPerSec × nBlockAlign.
+	m_wfx.Format.nBlockAlign = (m_wfx.Format.nChannels * m_wfx.Format.wBitsPerSample) / 8; // must equal (nChannels × wBitsPerSample) / 8
+	m_wfx.Format.nAvgBytesPerSec = m_wfx.Format.nSamplesPerSec * m_wfx.Format.nBlockAlign; // must equal nSamplesPerSec × nBlockAlign.
 	m_wfx.Format.cbSize = sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
 
 	m_wfx.SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
@@ -199,9 +199,7 @@ bool XAudio27API::FeedBlock(sint16* data)
 	// check if we queued too many blocks
 	if(m_blocks_queued >= kBlockCount)
 	{
-		XAUDIO2_VOICE_STATE state{};
-		m_source_voice->GetState(&state);
-		m_blocks_queued = state.BuffersQueued;
+		m_blocks_queued = GetQueuedBuffers();
 
 		if (m_blocks_queued >= kBlockCount)
 		{
@@ -222,7 +220,14 @@ bool XAudio27API::FeedBlock(sint16* data)
 	return true;
 }
 
+uint32 XAudio27API::GetQueuedBuffers() const
+{
+	XAUDIO2_VOICE_STATE state{};
+	m_source_voice->GetState(&state);
+	return state.BuffersQueued;
+}
+
 bool XAudio27API::NeedAdditionalBlocks() const
 {
-	return m_blocks_queued < s_audioDelay;
+	return GetQueuedBuffers() < GetAudioDelay();
 }

src/audio/XAudio27API.h

@@ -47,6 +47,8 @@ public:
 	static std::vector<DeviceDescriptionPtr> GetDevices();
 
 private:
+	uint32 GetQueuedBuffers() const;
+
 	struct XAudioDeleter
 	{
 		void operator()(IXAudio2* ptr) const;

src/audio/XAudio2API.cpp

@@ -270,9 +270,7 @@ bool XAudio2API::FeedBlock(sint16* data)
 	// check if we queued too many blocks
 	if (m_blocks_queued >= kBlockCount)
 	{
-		XAUDIO2_VOICE_STATE state{};
-		m_source_voice->GetState(&state);
-		m_blocks_queued = state.BuffersQueued;
+		m_blocks_queued = GetQueuedBuffers();
 
 		if (m_blocks_queued >= kBlockCount)
 		{
@@ -293,7 +291,14 @@ bool XAudio2API::FeedBlock(sint16* data)
 	return true;
 }
 
+uint32 XAudio2API::GetQueuedBuffers() const
+{
+	XAUDIO2_VOICE_STATE state{};
+	m_source_voice->GetState(&state);
+	return state.BuffersQueued;
+}
+
 bool XAudio2API::NeedAdditionalBlocks() const
 {
-	return m_blocks_queued < s_audioDelay;
+	return GetQueuedBuffers() < GetAudioDelay();
 }

src/audio/XAudio2API.h

@@ -46,6 +46,8 @@ public:
 	static const std::vector<DeviceDescriptionPtr>& GetDevices() { return s_devices;	}
 
 private:
+	uint32 GetQueuedBuffers() const;
+
 	static const std::vector<DeviceDescriptionPtr>& RefreshDevices();
 
 	struct XAudioDeleter

src/config/CemuConfig.cpp

@@ -46,6 +46,7 @@ void CemuConfig::Load(XMLConfigParser& parser)
 	fullscreen = parser.get("fullscreen", fullscreen);
 	proxy_server = parser.get("proxy_server", "");
 	disable_screensaver = parser.get("disable_screensaver", disable_screensaver);
+	play_boot_sound = parser.get("play_boot_sound", play_boot_sound);
 	console_language = parser.get("console_language", console_language.GetInitValue());
 
 	window_position.x = parser.get("window_position").get("x", -1);
@@ -370,6 +371,7 @@ void CemuConfig::Save(XMLConfigParser& parser)
 	config.set<bool>("fullscreen", fullscreen);
 	config.set("proxy_server", proxy_server.GetValue().c_str());
 	config.set<bool>("disable_screensaver", disable_screensaver);
+	config.set<bool>("play_boot_sound", play_boot_sound);
 
 	// config.set("cpu_mode", cpu_mode.GetValue());
 	//config.set("console_region", console_region.GetValue());

src/config/CemuConfig.h

@@ -380,6 +380,7 @@ struct CemuConfig
 #endif
 	ConfigValue<bool> disable_screensaver{DISABLE_SCREENSAVER_DEFAULT};
 #undef DISABLE_SCREENSAVER_DEFAULT
+	ConfigValue<bool> play_boot_sound{false};
 
 	std::vector<std::string> game_paths;
 	std::mutex game_cache_entries_mutex;
@@ -524,7 +525,20 @@ struct CemuConfig
 		ConfigValue<bool> emulate_dimensions_toypad{false};
 	}emulated_usb_devices{};
 
-	private:
+	static int AudioChannelsToNChannels(AudioChannels kStereo)
+	{
+		switch (kStereo)
+		{
+		case 0:
+			return 1; // will mix mono sound on both output channels
+		case 2:
+			return 6;
+		default: // stereo
+			return 2;
+		}
+	}
+
+  private:
 	GameEntry* GetGameEntryByTitleId(uint64 titleId);
 	GameEntry* CreateGameEntry(uint64 titleId);
 };

src/gui/GeneralSettings2.cpp

@@ -207,8 +207,10 @@ wxPanel* GeneralSettings2::AddGeneralPage(wxNotebook* notebook)
 #if BOOST_OS_MACOS
 			m_disable_screensaver->Enable(false);
 #endif
-
-			// InsertEmptyRow();
+			m_play_boot_sound = new wxCheckBox(box, wxID_ANY, _("Enable intro sound"));
+			m_play_boot_sound->SetToolTip(_("Play bootSound file while compiling shaders/pipelines."));
+			second_row->Add(m_play_boot_sound, 0, botflag, 5);
+			CountRowElement();
 
 			m_auto_update = new wxCheckBox(box, wxID_ANY, _("Automatically check for updates"));
 			m_auto_update->SetToolTip(_("Automatically checks for new cemu versions on startup"));
@@ -936,13 +938,15 @@ void GeneralSettings2::StoreConfig()
 #if BOOST_OS_LINUX && defined(ENABLE_FERAL_GAMEMODE)
     config.feral_gamemode = m_feral_gamemode->IsChecked();
 #endif
+	config.play_boot_sound = m_play_boot_sound->IsChecked();
 	config.disable_screensaver = m_disable_screensaver->IsChecked();
 	// Toggle while a game is running
 	if (CafeSystem::IsTitleRunning())
 	{
 		ScreenSaver::SetInhibit(config.disable_screensaver);
 	}
-	
+
+
 	// -1 is default wx widget value -> set to dummy 0 so mainwindow and padwindow will update it
 	config.window_position = m_save_window_position_size->IsChecked() ? Vector2i{ 0,0 } : Vector2i{-1,-1};
 	config.window_size = m_save_window_position_size->IsChecked() ? Vector2i{ 0,0 } : Vector2i{-1,-1};
@@ -1574,6 +1578,7 @@ void GeneralSettings2::ApplyConfig()
 	m_save_screenshot->SetValue(config.save_screenshot);
 
 	m_disable_screensaver->SetValue(config.disable_screensaver);
+	m_play_boot_sound->SetValue(config.play_boot_sound);
 #if BOOST_OS_LINUX && defined(ENABLE_FERAL_GAMEMODE)
     	m_feral_gamemode->SetValue(config.feral_gamemode);
 #endif
@@ -1776,20 +1781,7 @@ void GeneralSettings2::UpdateAudioDevice()
 				if (m_game_launched && g_tvAudio)
 					channels = g_tvAudio->GetChannels();
 				else
-				{
-					switch (config.tv_channels)
-					{
-					case 0:
-						channels = 1;
-						break;
-					case 2:
-						channels = 6;
-						break;
-					default: // stereo
-						channels = 2;
-						break;
-					}
-				}
+					channels = CemuConfig::AudioChannelsToNChannels(config.tv_channels);
 
 				try
 				{
@@ -1824,20 +1816,7 @@ void GeneralSettings2::UpdateAudioDevice()
 				if (m_game_launched && g_padAudio)
 					channels = g_padAudio->GetChannels();
 				else
-				{
-					switch (config.pad_channels)
-					{
-					case 0:
-						channels = 1;
-						break;
-					case 2:
-						channels = 6;
-						break;
-					default: // stereo
-						channels = 2;
-						break;
-					}
-				}
+					channels = CemuConfig::AudioChannelsToNChannels(config.pad_channels);
 
 				try
 				{
@@ -1873,20 +1852,7 @@ void GeneralSettings2::UpdateAudioDevice()
 				if (m_game_launched && g_inputAudio)
 					channels = g_inputAudio->GetChannels();
 				else
-				{
-					switch (config.input_channels)
-					{
-					case 0:
-						channels = 1;
-						break;
-					case 2:
-						channels = 6;
-						break;
-					default: // stereo
-						channels = 2;
-						break;
-					}
-				}
+					channels = CemuConfig::AudioChannelsToNChannels(config.input_channels);
 
 				try
 				{

src/gui/GeneralSettings2.h

@@ -43,6 +43,7 @@ private:
 	wxCheckBox* m_discord_presence, *m_fullscreen_menubar;
 	wxCheckBox* m_auto_update, *m_receive_untested_releases, *m_save_screenshot;
 	wxCheckBox* m_disable_screensaver;
+	wxCheckBox* m_play_boot_sound;
 #if BOOST_OS_LINUX && defined(ENABLE_FERAL_GAMEMODE)
    	wxCheckBox* m_feral_gamemode;
 #endif

src/util/CMakeLists.txt

@@ -1,5 +1,7 @@
 add_library(CemuUtil
   boost/bluetooth.h
+  bootSound/BootSoundReader.cpp
+  bootSound/BootSoundReader.h
   ChunkedHeap/ChunkedHeap.h
   containers/flat_hash_map.hpp
   containers/IntervalBucketContainer.h

src/util/bootSound/BootSoundReader.cpp

@@ -0,0 +1,51 @@
+#include "BootSoundReader.h"
+#include "Cafe/CafeSystem.h"
+
+BootSoundReader::BootSoundReader(FSCVirtualFile* bootsndFile, sint32 blockSize) : bootsndFile(bootsndFile), blockSize(blockSize)
+{
+	// crash if this constructor is invoked with a blockSize that has a different number of samples per channel
+	cemu_assert(blockSize % (sizeof(sint16be) * 2) == 0);
+
+	fsc_setFileSeek(bootsndFile, 0);
+	fsc_readFile(bootsndFile, &muteBits, 4);
+	fsc_readFile(bootsndFile, &loopPoint, 4);
+
+	buffer.resize(blockSize / sizeof(sint16));
+	bufferBE.resize(blockSize / sizeof(sint16be));
+
+	// workaround: SM3DW has incorrect loop point
+	const auto titleId = CafeSystem::GetForegroundTitleId();
+	if(titleId == 0x0005000010145D00 || titleId == 0x0005000010145C00 || titleId == 0x0005000010106100)
+		loopPoint = 113074;
+}
+
+sint16* BootSoundReader::getSamples()
+{
+	size_t totalRead = 0;
+	const size_t loopPointOffset = 8 + loopPoint * 4;
+	while (totalRead < blockSize)
+	{
+		auto read = fsc_readFile(bootsndFile, bufferBE.data(), blockSize - totalRead);
+		if (read == 0)
+		{
+			cemuLog_log(LogType::Force, "failed to read PCM samples from bootSound.btsnd");
+			return nullptr;
+		}
+		if (read % (sizeof(sint16be) * 2) != 0)
+		{
+			cemuLog_log(LogType::Force, "failed to play bootSound.btsnd: reading PCM data stopped at an odd number of samples (is the file corrupt?)");
+			return nullptr;
+		}
+
+		std::copy_n(bufferBE.begin(), read / sizeof(sint16be), buffer.begin() + (totalRead / sizeof(sint16)));
+		totalRead += read;
+		if (totalRead < blockSize)
+			fsc_setFileSeek(bootsndFile, loopPointOffset);
+	}
+
+	// handle case where the end of a block of samples lines up with the end of the file
+	if(fsc_getFileSeek(bootsndFile) == fsc_getFileSize(bootsndFile))
+		fsc_setFileSeek(bootsndFile, loopPointOffset);
+
+	return buffer.data();
+}

src/util/bootSound/BootSoundReader.h

@@ -0,0 +1,20 @@
+#pragma once
+#include "Cafe/Filesystem/fsc.h"
+
+class BootSoundReader
+{
+  public:
+	BootSoundReader() = delete;
+	BootSoundReader(FSCVirtualFile* bootsndFile, sint32 blockSize);
+
+	sint16* getSamples();
+
+  private:
+	FSCVirtualFile* bootsndFile{};
+	sint32 blockSize{};
+
+	uint32be muteBits{};
+	uint32be loopPoint{};
+	std::vector<sint16> buffer{};
+	std::vector<sint16be> bufferBE{};
+};