Move to FrameworkEnvironment

Author: smoogipoo

osu.Framework/FrameworkEnvironment.cs

@@ -21,6 +21,7 @@ public static class FrameworkEnvironment
         public static bool NoStructuredBuffers { get; }
         public static string? DeferredRendererEventsOutputPath { get; }
         public static bool UseSDL3 { get; }
+        public static bool UseWasapi { get; }
 
         /// <summary>
         /// Whether non-SSL requests should be allowed. Debug only. Defaults to disabled.
@@ -55,6 +56,8 @@ static FrameworkEnvironment()
 
             // Desktop has many issues, see https://github.com/ppy/osu-framework/issues/6540.
             UseSDL3 = RuntimeInfo.IsMobile || (parseBool(Environment.GetEnvironmentVariable("OSU_SDL3")) ?? false);
+
+            UseWasapi = parseBool(Environment.GetEnvironmentVariable("OSU_AUDIO_WASAPI_EXPERIMENTAL")) ?? false;
         }
 
         private static bool? parseBool(string? value)

osu.Framework/Threading/AudioThread.cs

@@ -140,8 +140,7 @@ internal bool InitDevice(int deviceId)
 
             // That this has not been mass-tested since https://github.com/ppy/osu-framework/pull/6651 and probably needs to be.
             // Currently envvar gated for users to test at their own discretion.
-            bool useWasapiInit = Environment.GetEnvironmentVariable("OSU_AUDIO_WASAPI_EXPERIMENTAL") == "1";
-            if (useWasapiInit)
+            if (FrameworkEnvironment.UseWasapi)
                 attemptWasapiInitialisation();
 
             initialised_devices.Add(deviceId);