Update performance

Author: MS-crew

EXILED/Exiled.API/Features/Audio/WavStreamSource.cs

@@ -7,10 +7,14 @@
 
 namespace Exiled.API.Features.Audio
 {
+    using System;
     using System.IO;
+    using System.Runtime.InteropServices;
 
     using Exiled.API.Interfaces;
 
+    using VoiceChat;
+
     /// <summary>
     /// Provides a PCM audio source from a WAV file stream.
     /// </summary>
@@ -19,6 +23,7 @@ public sealed class WavStreamSource : IPcmSource
         private readonly long endPosition;
         private readonly long startPosition;
         private readonly BinaryReader reader;
+        private readonly byte[] readBuffer = new byte[VoiceChatSettings.PacketSizePerChannel * 2];
 
         /// <summary>
         /// Initializes a new instance of the <see cref="WavStreamSource"/> class.
@@ -52,15 +57,26 @@ public bool Ended
         /// <returns>The number of samples read.</returns>
         public int Read(float[] buffer, int offset, int count)
         {
-            int i = 0;
+            int bytesNeeded = count * 2;
 
-            while (i < count && reader.BaseStream.Position < endPosition)
-            {
-                buffer[offset + i] = reader.ReadInt16() / 32768f;
-                i++;
-            }
+            if (bytesNeeded > readBuffer.Length)
+                bytesNeeded = readBuffer.Length;
+
+            int bytesRead = reader.Read(readBuffer, 0, bytesNeeded);
+            if (bytesRead == 0)
+                return 0;
+
+            if (bytesRead % 2 != 0)
+                bytesRead--;
+
+            Span<byte> byteSpan = readBuffer.AsSpan(0, bytesRead);
+            Span<short> shortSpan = MemoryMarshal.Cast<byte, short>(byteSpan);
+
+            int samplesRead = shortSpan.Length;
+            for (int i = 0; i < samplesRead; i++)
+                buffer[offset + i] = shortSpan[i] / 32768f;
 
-            return i;
+            return samplesRead;
         }
 
         /// <summary>

EXILED/Exiled.API/Features/Audio/WavUtility.cs

@@ -7,7 +7,9 @@
 
 namespace Exiled.API.Features.Audio
 {
+    using System;
     using System.IO;
+    using System.Runtime.InteropServices;
 
     using VoiceChat;
 
@@ -23,16 +25,22 @@ public static class WavUtility
         /// <returns>An array of floats representing the PCM data.</returns>
         public static float[] WavToPcm(string path)
         {
-            using FileStream fs = File.OpenRead(path);
-            using BinaryReader br = new(fs);
+            byte[] fileBytes = File.ReadAllBytes(path);
+
+            using MemoryStream ms = new(fileBytes);
+            using BinaryReader br = new(ms);
 
             SkipHeader(br);
 
-            int samples = (int)((fs.Length - fs.Position) / 2);
-            float[] pcm = new float[samples];
+            int headerOffset = (int)ms.Position;
+            int dataLength = fileBytes.Length - headerOffset;
+
+            Span<byte> audioDataSpan = fileBytes.AsSpan(headerOffset, dataLength);
+            Span<short> samples = MemoryMarshal.Cast<byte, short>(audioDataSpan);
 
-            for (int i = 0; i < samples; i++)
-                pcm[i] = br.ReadInt16() / 32768f;
+            float[] pcm = new float[samples.Length];
+            for (int i = 0; i < samples.Length; i++)
+                pcm[i] = samples[i] / 32768f;
 
             return pcm;
         }

EXILED/Exiled.API/Features/Toys/Speaker.cs

@@ -309,8 +309,7 @@ private IEnumerator<float> PlayBackCoroutine()
                     if (Loop)
                     {
                         source.Reset();
-                        timeAccumulator = 0f;
-                        break;
+                        continue;
                     }
 
                     if (DestroyAfter)