public static async Task <byte[]> DecompressAsync(byte[] byteIn, int size)
{
using var stream = new ZlibStream(new MemoryStream(byteIn, false), CompressionMode.Decompress, CompressionLevel.BestSpeed);
var data = new byte[size];
await stream.ReadAsync(byteIn, 0, size);
return(data);
}
public async Task <byte[]> Decompress(byte[] compressedArray, int bufferSize)
{
var memoryStream = new MemoryStream(compressedArray);
using (var decompressor = new ZlibStream(memoryStream, CompressionMode.Decompress))
{
var buffer = new byte[bufferSize];
using (var output = new MemoryStream())
{
int read;
while ((read = await decompressor.ReadAsync(buffer, 0, buffer.Length)) > 0)
{
await output.WriteAsync(buffer, 0, read);
}
return(output.ToArray());
}
}
}
public async Task <byte[]> Decompress(byte[] compressedArray)
{
var memoryStream = new MemoryStream(compressedArray);
using (var decompressor = new ZlibStream(memoryStream, CompressionMode.Decompress))
{
var buffer = new byte[Constants.BUFFER_SIZE];
using (var output = new MemoryStream())
{
int read;
while ((read = await decompressor.ReadAsync(buffer, 0, buffer.Length).ConfigureAwait(false)) > 0)
{
await output.WriteAsync(buffer, 0, read).ConfigureAwait(false);
}
return(output.ToArray());
}
}
}
private static async Task <MemoryStream> InternalGetDecryptionStreamAsync(Stream input, IMS2SizeHeader size, IBufferedCipher cipher, bool zlibCompressed)
{
using var cs = new CipherStream(input, cipher, null);
byte[] bytes = new byte[size.Size];
int readBytes;
if (zlibCompressed)
{
using var z = new ZlibStream(cs, CompressionMode.Decompress, true);
readBytes = await z.ReadAsync(bytes, 0, bytes.Length).ConfigureAwait(false);
}
else
{
readBytes = await cs.ReadAsync(bytes, 0, bytes.Length).ConfigureAwait(false);
}
if (readBytes != size.Size)
{
throw new ArgumentException("Size bytes from input do not match with header size.", nameof(input));
}
return(new MemoryStream(bytes));
}