public Decompressor(DecompressionOptions options)
{
Options = options;
dctx = ExternMethods.ZSTD_createDCtx().EnsureZstdSuccess();
options.ApplyDecompressionParams(dctx);
}
public DecompressionStream(Stream stream, DecompressionOptions options, int bufferSize = 0)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
if (!stream.CanRead)
{
throw new ArgumentException("Stream is not readable", nameof(stream));
}
if (bufferSize < 0)
{
throw new ArgumentOutOfRangeException(nameof(bufferSize));
}
innerStream = stream;
dStream = ZSTD_createDStream().EnsureZstdSuccess();
ZSTD_DCtx_reset(dStream, ZSTD_ResetDirective.ZSTD_reset_session_only).EnsureZstdSuccess();
if (options != null)
{
options.ApplyDecompressionParams(dStream);
if (options.Ddict != IntPtr.Zero)
{
ZSTD_DCtx_refDDict(dStream, options.Ddict).EnsureZstdSuccess();
}
}
this.bufferSize = bufferSize > 0 ? bufferSize : (int)ZSTD_DStreamInSize().EnsureZstdSuccess();
inputBuffer = ArrayPool <byte> .Shared.Rent(this.bufferSize);
#if !(NET45 || NETSTANDARD2_0)
inputMemory = new Memory <byte>(inputBuffer, 0, this.bufferSize);
#endif
pos = size = (UIntPtr)this.bufferSize;
}
