New XpressHuffman implements IBlockDecompressor

Author: LTRData

Library/DiscUtils.Core/Compression/XpressHuffman.cs

@@ -7,12 +7,16 @@ namespace DiscUtils.Compression;
 /// <summary>
 /// XPRESS Huffman decompressor that operates directly on spans.
 /// </summary>
-public static class XpressHuffman
+public class XpressHuffman : IBlockDecompressor
 {
     private const int SymbolCount = 512;
     private const int MaxCodeLength = 15;
     private const int FastBits = 10;
 
+    public static XpressHuffman Default => field ??= new();
+
+    int IBlockDecompressor.BlockSize { get; set; }
+
     /// <summary>
     /// Decompresses an XPRESS Huffman block into a caller-provided destination buffer.
     /// </summary>
@@ -362,6 +366,9 @@ private static bool CopyMatch(Span<byte> destination, ref int dstPos, int distan
         return true;
     }
 
+    bool IBlockDecompressor.TryDecompress(ReadOnlySpan<byte> source, Span<byte> decompressed, out int decompressedSize)
+        => TryDecompress(source, decompressed, out _, out decompressedSize);
+
     private ref struct XpressBitReader
     {
         private readonly ReadOnlySpan<byte> _source;

Library/DiscUtils.Core/Compression/XpressLz77.cs

@@ -6,7 +6,7 @@ namespace DiscUtils.Compression;
 
 public sealed class XpressLz77 : IBlockDecompressor
 {
-    public static XpressLz77 Default { get; } = new();
+    public static XpressLz77 Default => field ??= new();
 
     int IBlockDecompressor.BlockSize { get; set; }