CroakFang
55 lines
1.6 KiB
C#
55 lines
1.6 KiB
C#
using K4os.Compression.LZ4;
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using K4os.Compression.LZ4.Streams;
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using System;
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using System.IO;
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using System.Runtime.InteropServices;
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using UnityEngine;
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public static class LZ4Util
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{
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[DllImport("libnative.dll")]
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public static extern int LZ4_decompress_safe_ext(IntPtr src, IntPtr dst, int compressedSize, int dstCapacity);
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public static byte[] DecompressFromFile(string path)
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{
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var decoder = LZ4Stream.Decode(File.OpenRead(path));
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var target = new MemoryStream();
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decoder.CopyTo(target);
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return target.ToArray();
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}
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public static byte[] DecompressFromBytesSafe(byte[] bytes)//WIP
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{
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IntPtr data = Marshal.AllocHGlobal(bytes.Length);
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Marshal.Copy(bytes, 0, data, bytes.Length);
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int dataLength = 0;
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dataLength = ((dataLength| bytes[3])<<8);
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dataLength = ((dataLength| bytes[2])<<8);
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dataLength = ((dataLength| bytes[1])<<8);
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dataLength = (dataLength| bytes[0]);
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IntPtr result = Marshal.AllocHGlobal(bytes.Length+ dataLength);
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var output = new byte[bytes.Length + dataLength];
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var outlength = LZ4_decompress_safe_ext(data, result, bytes.Length, output.Length);
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Marshal.Copy(result, output, 0,outlength);
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Array.Resize(ref output, outlength);
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Marshal.FreeHGlobal(data);
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Marshal.FreeHGlobal(result);
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return output;
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}
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public static byte[] CompressFromBytes(byte[] bytes)
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{
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var source = new MemoryStream(bytes);
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var decoder = LZ4Stream.Encode(source);
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var target = new MemoryStream();
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decoder.CopyTo(target);
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return target.ToArray();
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}
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}
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