Audio lag fix

.gitignore

@@ -45,3 +45,5 @@
 /packages
 
 launchSettings.json
+
+/Dist/copyBIOS.sh

src/BizHawk.Client.Common/config/Config.cs

@@ -255,6 +255,12 @@ public void ResolveDefaults()
 		public string SoundDevice { get; set; } = "";
 		public int SoundBufferSizeMs { get; set; } = 100;
 
+		public bool MuteInBG { get; set; } = false;
+
+		public bool MuteOnLag { get; set; } = false;
+
+		public int FPSThreshold { get; set; } = 56;
+
 		// Lua
 		public RecentFiles RecentLua { get; set; } = new RecentFiles(8);
 		public RecentFiles RecentLuaSession { get; set; } = new RecentFiles(8);

src/BizHawk.Client.EmuHawk/MainForm.cs

@@ -3302,7 +3302,36 @@ private void StepRunLoop_Core(bool force = false)
 				UpdateToolsAfter();
 			}
 
+
+			// Mutes the game if EmuHawk is unfocused or minimized
+			// An option in the sound settings needs to be turned on for this to work.
+			if (Config.MuteInBG) {
+				if(WindowState == FormWindowState.Minimized || Form.ActiveForm == null) {
+					Sound.StopSound();
+				}
+				else { 
+					Sound.StartSound();
+				}
+			} else { 
+				Sound.StartSound();
+			}
+
+			// Mutes the game if the current FPS reaches the threshold chosen by the user or lower
+			// An option in the sound settings needs to be turned on for this to work.
+			if(Config.MuteOnLag) {
+				if (_lastFps <= (double)Config.FPSThreshold)
+				{
+					Sound.StopSound();
+				}
+				else
+				{
+					Sound.StartSound();
+				}
+			}
+
+
 			Sound.UpdateSound(atten, DisableSecondaryThrottling);
+
 		}
 
 		private void CalcFramerateAndUpdateDisplay(long currentTimestamp, bool isRewinding, bool isFastForwarding)

src/BizHawk.Client.EmuHawk/Program.cs

@@ -31,8 +31,13 @@ internal static class Program
 		static Program()
 		{
 			// This needs to be done before the warnings/errors show up
+
 			Application.EnableVisualStyles();
 			Application.SetCompatibleTextRenderingDefault(false);
+
+
+
+
 
 			// Quickly check if the user is running this as a 32 bit process somehow
 			// TODO: We may want to remove this sometime, EmuHawk should be able to run somewhat as 32 bit if the user really wants to
@@ -89,6 +94,7 @@ static Program()
 		private static int Main(string[] args)
 		{
 			var exitCode = SubMain(args);
+
 			if (!RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
 			{
 				Console.WriteLine("BizHawk has completed its shutdown routines, killing process...");

src/BizHawk.Client.EmuHawk/Sound/Sound.cs

@@ -154,6 +154,7 @@ public void HandleInitializationOrUnderrun(bool isUnderrun, ref int samplesNeede
 
 		public void UpdateSound(float atten, bool isSecondaryThrottlingDisabled)
 		{
+
 			if (!Config.SoundEnabled || !IsStarted || _bufferedProvider == null || _disposed)
 			{
 				_bufferedProvider?.DiscardSamples();

src/BizHawk.Client.EmuHawk/config/SoundConfig.cs

@@ -22,6 +22,7 @@ public SoundConfig(IDialogController dialogController, Config config, Func<ESoun
 			_config = config;
 			_getDeviceNamesCallback = getDeviceNamesCallback;
 			DialogController = dialogController;
+
 			InitializeComponent();
 		}
 
@@ -44,6 +45,10 @@ private void SoundConfig_Load(object sender, EventArgs e)
 			nudNormal.Value = _config.SoundVolume;
 			tbRWFF.Value = _config.SoundVolumeRWFF;
 			nudRWFF.Value = _config.SoundVolumeRWFF;
+			cbMuteInBG.Checked = _config.MuteInBG;
+			cbMuteOnLag.Checked = _config.MuteOnLag;
+			FpsThresholdNumeric.Value = _config.FPSThreshold;
+			FpsThresholdNumeric.Enabled = _config.MuteOnLag;
 			UpdateSoundDialog();
 
 			_programmaticallyChangingValue = false;
@@ -76,6 +81,9 @@ private void Ok_Click(object sender, EventArgs e)
 			_config.SoundVolume = tbNormal.Value;
 			_config.SoundVolumeRWFF = tbRWFF.Value;
 			_config.SoundDevice = (string)listBoxSoundDevices.SelectedItem ?? "<default>";
+			_config.MuteInBG = cbMuteInBG.Checked;
+			_config.MuteOnLag = cbMuteOnLag.Checked;
+			_config.FPSThreshold = (int)FpsThresholdNumeric.Value;
 			DialogResult = DialogResult.OK;
 		}
 
@@ -145,5 +153,14 @@ private void nudRWFF_ValueChanged(object sender, EventArgs e)
 		{
 			tbRWFF.Value = (int)nudRWFF.Value;
 		}
+
+		private void muteOnLag_CheckedChanged(object sender, EventArgs e)
+		{
+			if(cbMuteOnLag.Checked) { 
+				FpsThresholdNumeric.Enabled = true;
+			} else { 
+				FpsThresholdNumeric.Enabled = false; 
+			}
+		}
 	}
 }