using AQtun.LZAV;

byte[] src = File.ReadAllBytes(FILENAME);
byte[] dst = new byte[Lzav.CompressBound(src.Length)];
int length = Lzav.CompressDefault(src, dst);
if (length < 0) {
  // Error handling.
}

using AQtun.LZAV;

byte[] decompressed = new byte[decompressed_size];
int length = Lzav.Decompress(compressed, decompressed);
if (length < 0) {
  // Error handling.
}

// compression
int CompressBound(int sourceLength);
int CompressDefault(IntPtr source, IntPtr destination, int sourceLength, int destinationLength);
int CompressDefault(ReadOnlySpan<byte> source, Span<byte> destination);
int CompressDefault(ReadOnlySpan<byte> source, out Span<byte> output);

// high ratio compression
int CompressBoundHi(int sourceLength);
int CompressHi(IntPtr source, IntPtr destination, int sourceLength, int destinationLength);
int CompressHi(ReadOnlySpan<byte> source, Span<byte> destination);
int CompressHi(ReadOnlySpan<byte> source, out Span<byte> output);

// decompression
int Decompress(IntPtr source, IntPtr destination, int sourceLength, int destinationLength);
int Decompress(ReadOnlySpan<byte> source, Span<byte> destination);
int Decompress(ReadOnlySpan<byte> source, int decompressedSize, out Span<byte> output)