public Compressor(CompressionOptions options)
{
Options = options;
cctx = ExternMethods.ZSTD_createCCtx().EnsureZstdSuccess();
options.ApplyCompressionParams(cctx);
if (options.Cdict != IntPtr.Zero)
{
ExternMethods.ZSTD_CCtx_refCDict(cctx, options.Cdict).EnsureZstdSuccess();
}
}
public CompressionStream(Stream stream, CompressionOptions options, int bufferSize = 0)
{
if (stream == null)
{
throw new ArgumentNullException(nameof(stream));
}
if (!stream.CanWrite)
{
throw new ArgumentException("Stream is not writable", nameof(stream));
}
if (bufferSize < 0)
{
throw new ArgumentOutOfRangeException(nameof(bufferSize));
}
innerStream = stream;
cStream = ZSTD_createCStream().EnsureZstdSuccess();
ZSTD_CCtx_reset(cStream, ZSTD_ResetDirective.ZSTD_reset_session_only).EnsureZstdSuccess();
if (options != null)
{
options.ApplyCompressionParams(cStream);
if (options.Cdict != IntPtr.Zero)
{
ZSTD_CCtx_refCDict(cStream, options.Cdict).EnsureZstdSuccess();
}
}
this.bufferSize = bufferSize > 0 ? bufferSize : (int)ZSTD_CStreamOutSize().EnsureZstdSuccess();
outputBuffer = ArrayPool <byte> .Shared.Rent(this.bufferSize);
#if !(NET45 || NETSTANDARD2_0)
outputMemory = new ReadOnlyMemory <byte>(outputBuffer, 0, this.bufferSize);
#endif
}