net 5.0 performance boost

Author: Not Officer

src/Classes/Usmap.cs

@@ -74,11 +74,15 @@ internal Usmap(GenericReader fileReader, UsmapOptions options)
 					fileReader.Dispose();
 					var data = new byte[decompSize];
 					using var decompressor = new OodleDecompressor(options.OodlePath);
-					var result = decompressor.Decompress(compData, compSize, data, decompSize, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3);
 
-					if (result != decompSize)
+					unsafe
 					{
-						throw new FileLoadException($"Invalid oodle .usmap decompress result: {result} / {decompSize}");
+						var result = decompressor.Decompress(compData, compSize, data, decompSize, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3);
+
+						if (result != decompSize)
+						{
+							throw new FileLoadException($"Invalid oodle .usmap decompress result: {result} / {decompSize}");
+						}
 					}
 
 					reader = new GenericBufferReader(data);

src/OodleDecompressor.cs

@@ -3,18 +3,27 @@
 
 namespace UsmapNET
 {
-	internal class OodleDecompressor : IDisposable
+	internal unsafe class OodleDecompressor : IDisposable
 	{
 		private readonly IntPtr _handle;
 
+#if NET5_0
+		public readonly delegate* unmanaged[Cdecl]<byte[], long, byte[], long, int, int, int, long, long, long, long, long, long, int, long> Decompress;
+#else
 		public delegate long OodleLZ_Decompress(byte[] buffer, long bufferSize, byte[] result, long outputBufferSize, int a, int b, int c, long d, long e, long f, long g, long h, long i, int ThreadModule);
 		public readonly OodleLZ_Decompress Decompress;
+#endif
 
 		public OodleDecompressor(string oodlePath)
 		{
 			_handle = NativeLibrary.Load(oodlePath);
 			var address = NativeLibrary.GetExport(_handle, "OodleLZ_Decompress");
+
+#if NET5_0
+			Decompress = (delegate* unmanaged[Cdecl]<byte[], long, byte[], long, int, int, int, long, long, long, long, long, long, int, long>)address;
+#else
 			Decompress = Marshal.GetDelegateForFunctionPointer<OodleLZ_Decompress>(address);
+#endif
 		}
 
 		public void Dispose()

src/Usmap.NET.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
 	<PropertyGroup>
 		<TargetFrameworks>net5.0;netcoreapp3.1</TargetFrameworks>
@@ -12,28 +12,25 @@
 		<RepositoryType>git</RepositoryType>
 		<PackageTags>usmap parser</PackageTags>
 		<NeutralLanguage>en</NeutralLanguage>
-		<Version>1.1.0</Version>
-		<PackageReleaseNotes>Easier oodle library usage</PackageReleaseNotes>
+		<Version>1.1.1</Version>
+		<PackageReleaseNotes>NET 5.0 performance boost</PackageReleaseNotes>
 	</PropertyGroup>
 
 	<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
-	  <PlatformTarget>x64</PlatformTarget>
+		<PlatformTarget>x64</PlatformTarget>
+		<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
 	</PropertyGroup>
 
 	<PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
-	  <PlatformTarget>x64</PlatformTarget>
-	</PropertyGroup>
-
-	<PropertyGroup Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Release|net5.0|AnyCPU'">
-	  <DebugType>portable</DebugType>
-	  <DebugSymbols>true</DebugSymbols>
+		<PlatformTarget>x64</PlatformTarget>
+		<AllowUnsafeBlocks>true</AllowUnsafeBlocks>
 	</PropertyGroup>
 
 	<ItemGroup>
-	  <None Include="..\LICENSE">
-	    <Pack>True</Pack>
-	    <PackagePath></PackagePath>
-	  </None>
+		<None Include="..\LICENSE">
+			<Pack>True</Pack>
+			<PackagePath></PackagePath>
+		</None>
 	</ItemGroup>
 
 </Project>