Interop.cs

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using System;
using System.IO.Compression;
using System.Runtime.InteropServices;
using Microsoft.Win32.SafeHandles;
 
internal static class Interop
{
    internal static class Brotli
    {
        [DllImport("System.IO.Compression.Native")]
        internal static extern SafeBrotliDecoderHandle BrotliDecoderCreateInstance(IntPtr allocFunc, IntPtr freeFunc, IntPtr opaque);
 
        [DllImport("System.IO.Compression.Native")]
        internal unsafe static extern int BrotliDecoderDecompressStream(SafeBrotliDecoderHandle state, ref nuint availableIn, byte** nextIn, ref nuint availableOut, byte** nextOut, out nuint totalOut);
 
        [DllImport("System.IO.Compression.Native")]
        internal unsafe static extern BOOL BrotliDecoderDecompress(nuint availableInput, byte* inBytes, nuint* availableOutput, byte* outBytes);
 
        [DllImport("System.IO.Compression.Native")]
        internal static extern void BrotliDecoderDestroyInstance(IntPtr state);
 
        [DllImport("System.IO.Compression.Native")]
        internal static extern BOOL BrotliDecoderIsFinished(SafeBrotliDecoderHandle state);
 
        [DllImport("System.IO.Compression.Native")]
        internal static extern SafeBrotliEncoderHandle BrotliEncoderCreateInstance(IntPtr allocFunc, IntPtr freeFunc, IntPtr opaque);
 
        [DllImport("System.IO.Compression.Native")]
        internal static extern BOOL BrotliEncoderSetParameter(SafeBrotliEncoderHandle state, BrotliEncoderParameter parameter, uint value);
 
        [DllImport("System.IO.Compression.Native")]
        internal unsafe static extern BOOL BrotliEncoderCompressStream(SafeBrotliEncoderHandle state, BrotliEncoderOperation op, ref nuint availableIn, byte** nextIn, ref nuint availableOut, byte** nextOut, out nuint totalOut);
 
        [DllImport("System.IO.Compression.Native")]
        internal static extern BOOL BrotliEncoderHasMoreOutput(SafeBrotliEncoderHandle state);
 
        [DllImport("System.IO.Compression.Native")]
        internal static extern void BrotliEncoderDestroyInstance(IntPtr state);
 
        [DllImport("System.IO.Compression.Native")]
        internal unsafe static extern BOOL BrotliEncoderCompress(int quality, int window, int v, nuint availableInput, byte* inBytes, nuint* availableOutput, byte* outBytes);
    }
 
    internal enum BOOL
    {
        FALSE,
        TRUE
    }
}