Preformance!!!

MediaBrowser.Common/Json/Converters/JsonInt32Converter.cs

@@ -15,7 +15,20 @@ namespace MediaBrowser.Common.Json.Converters
         public override int Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
         {
             static void ThrowFormatException() => throw new FormatException("Invalid format for an integer.");
-            ReadOnlySpan<byte> span = reader.HasValueSequence ? reader.ValueSequence.ToArray() : reader.ValueSpan;
+            ReadOnlySpan<byte> span = stackalloc byte[0];
+
+            if (reader.HasValueSequence)
+            {
+                long sequenceLength = reader.ValueSequence.Length;
+                Span<byte> stackSpan = stackalloc byte[(int)sequenceLength];
+                reader.ValueSequence.CopyTo(stackSpan);
+                span = stackSpan;
+            }
+            else
+            {
+                span = reader.ValueSpan;
+            }
+
             if (!Utf8Parser.TryParse(span, out int number, out _))
             {
                 ThrowFormatException();
@@ -28,7 +41,7 @@ namespace MediaBrowser.Common.Json.Converters
         public override void Write(Utf8JsonWriter writer, int value, JsonSerializerOptions options)
         {
             static void ThrowInvalidOperationException() => throw new InvalidOperationException();
-            Span<byte> span = new byte[16];
+            Span<byte> span = stackalloc byte[16];
             if (Utf8Formatter.TryFormat(value, span, out int bytesWritten))
             {
                 writer.WriteStringValue(span.Slice(0, bytesWritten));