/// <summary>
/// Initializes a new instance of the <see cref="LzmaStream" /> class.
/// </summary>
/// <param name="stream">The stream.</param>
/// <param name="compressionMode">The compression mode.</param>
/// <param name="compressionParameters">The compression parameters.</param>
/// <param name="ownsStream">if set to <c>true</c> [owns stream].</param>
/// <param name="bufferSize">Size of the buffer.</param>
/// <exception cref="ArgumentOutOfRangeException">compressionMode - null</exception>
/// <exception cref="System.ArgumentOutOfRangeException">compressionMode - null</exception>
private LzmaStream(Stream stream, CompressionMode compressionMode, LzmaCompressionParameters compressionParameters = null,
bool ownsStream = true, int bufferSize = 1 << 20)
{
_innerStream = stream;
_ownsStream = ownsStream;
_pipeStream = new PipeStream(bufferSize);
switch (compressionMode)
{
case CompressionMode.Compress:
CanWrite = true;
_coderThread = StartThread(() => CreateEncoder(_innerStream, compressionParameters).Code(_pipeStream, _innerStream, -1, -1, null),
"LZMA compress");
break;
case CompressionMode.Decompress:
CanRead = true;
_coderThread = StartThread(() =>
{
var decoder = CreateDecoder(_innerStream, out var length);
var inputLength = _innerStream.CanSeek ? _innerStream.Length : -1;
decoder.Code(_innerStream, _pipeStream, inputLength, length, null);
_pipeStream.Dispose();
},
"LZMA decompress");
break;
default:
throw new ArgumentOutOfRangeException(nameof(compressionMode), compressionMode, null);
}
}
private static ICoder CreateEncoder(Stream innerStream, LzmaCompressionParameters compressionParameters)
{
var encoder = new Encoder();
compressionParameters.SetEncoderProperties(encoder);
encoder.WriteCoderProperties(innerStream);
innerStream.WriteLong(-1);
return(encoder);
}
public LzmaStream(Stream stream, LzmaCompressionParameters compressionParameters, bool ownsStream = true, int bufferSize = 1 << 20)
: this(stream, CompressionMode.Compress, compressionParameters, ownsStream, bufferSize)
{
}
