[+] Sound exclusive and 8ch settings

AquaMai.Mods/GameSystem/Sound.cs

@@ -0,0 +1,63 @@
+using System;
+using AquaMai.Config.Attributes;
+using HarmonyLib;
+using Manager;
+
+namespace AquaMai.Mods.GameSystem;
+
+[ConfigSection(
+    zh: "音频独占与八声道设置",
+    en: "Audio Exclusive and 8-Channel Settings")]
+public static class Sound
+{
+    [ConfigEntry(
+        zh: "是否启用音频独占",
+        en: "Enable Audio Exclusive")]
+    private static bool enableExclusive;
+
+    [ConfigEntry(
+        zh: "是否启用八声道",
+        en: "Enable 8-Channel")]
+    private static bool enable8Channel;
+
+    private static CriAtomUserExtension.AudioClientShareMode AudioShareMode => enableExclusive ? CriAtomUserExtension.AudioClientShareMode.Exclusive : CriAtomUserExtension.AudioClientShareMode.Shared;
+
+    private const ushort wBitsPerSample = 32;
+    private const uint nSamplesPerSec = 48000u;
+    private static ushort nChannels => enable8Channel ? (ushort)8 : (ushort)2;
+    private static ushort nBlockAlign => (ushort)(wBitsPerSample / 8 * nChannels);
+    private static uint nAvgBytesPerSec => nSamplesPerSec * nBlockAlign;
+
+    private static CriAtomUserExtension.WaveFormatExtensible CreateFormat() =>
+        new()
+        {
+            Format = new CriAtomUserExtension.WaveFormatEx
+            {
+                wFormatTag = 65534,
+                nSamplesPerSec = nSamplesPerSec,
+                wBitsPerSample = wBitsPerSample,
+                cbSize = 22,
+                nChannels = nChannels,
+                nBlockAlign = nBlockAlign,
+                nAvgBytesPerSec = nAvgBytesPerSec
+            },
+            Samples = new CriAtomUserExtension.Samples
+            {
+                wValidBitsPerSample = 24,
+            },
+            dwChannelMask = enable8Channel ? 1599u : 3u,
+            SubFormat = new Guid("00000001-0000-0010-8000-00aa00389b71")
+        };
+
+    [HarmonyPrefix]
+    // Original typo
+    [HarmonyPatch(typeof(WasapiExclusive), "Intialize")]
+    public static bool InitializePrefix()
+    {
+        CriAtomUserExtension.SetAudioClientShareMode(AudioShareMode);
+        CriAtomUserExtension.SetAudioBufferTime(160000uL);
+        var format = CreateFormat();
+        CriAtomUserExtension.SetAudioClientFormat(ref format);
+        return false;
+    }
+}