protected override void Dispose(bool disposing)
{
if (disposing && !_disposed)
{
if (_lzmaStream != null)
{
if (_mode == Mode.Compress)
{
Flush();
FinishWrite();
}
else
{
_workBufPos = ReadDone;
}
XZInit.Lib.LzmaEnd(_lzmaStream);
_lzmaStreamPin.Free();
_lzmaStream = null;
}
if (BaseStream != null)
{
if (!_leaveOpen)
{
BaseStream.Dispose();
}
BaseStream = null;
}
_disposed = true;
}
}
/// <summary>
/// Create multi-threaded compressing XZStream. Requires more memory than single-threaded mode.
/// </summary>
public unsafe XZStream(Stream baseStream, XZCompressOptions compOpts, XZThreadedCompressOptions threadOpts)
{
XZInit.Manager.EnsureLoaded();
BaseStream = baseStream ?? throw new ArgumentNullException(nameof(baseStream));
_mode = Mode.Compress;
_disposed = false;
// Check and set XZStreamOptions
_leaveOpen = compOpts.LeaveOpen;
_bufferSize = CheckBufferSize(compOpts.BufferSize);
_workBuf = new byte[_bufferSize];
// Prepare LzmaStream and buffers
_lzmaStream = new LzmaStream();
_lzmaStreamPin = GCHandle.Alloc(_lzmaStream, GCHandleType.Pinned);
// Check LzmaMt instance
LzmaMt mt = compOpts.ToLzmaMt(threadOpts);
CheckPreset(mt.Preset);
// Initialize the encoder
LzmaRet ret = XZInit.Lib.LzmaStreamEncoderMt(_lzmaStream, mt);
XZException.CheckReturnValue(ret);
// Set possible max memory usage.
MaxMemUsage = XZInit.Lib.LzmaStreamEncoderMtMemUsage(mt);
}
/// <summary>
/// Create single-threaded compressing XZStream.
/// </summary>
public unsafe XZStream(Stream baseStream, XZCompressOptions compOpts)
{
XZInit.Manager.EnsureLoaded();
BaseStream = baseStream ?? throw new ArgumentNullException(nameof(baseStream));
_mode = Mode.Compress;
_disposed = false;
// Check and set compress options
_leaveOpen = compOpts.LeaveOpen;
_bufferSize = CheckBufferSize(compOpts.BufferSize);
_workBuf = new byte[_bufferSize];
// Prepare LzmaStream
_lzmaStream = new LzmaStream();
_lzmaStreamPin = GCHandle.Alloc(_lzmaStream, GCHandleType.Pinned);
// Check preset
uint preset = compOpts.Preset;
CheckPreset(preset);
// Initialize the encoder
LzmaRet ret = XZInit.Lib.LzmaEasyEncoder(_lzmaStream, preset, compOpts.Check);
XZException.CheckReturnValue(ret);
// Set possible max memory usage.
MaxMemUsage = XZInit.Lib.LzmaEasyEncoderMemUsage(preset);
}
/// <summary>
/// Create decompressing XZStream
/// </summary>
public unsafe XZStream(Stream baseStream, XZDecompressOptions decompOpts)
{
XZInit.Manager.EnsureLoaded();
BaseStream = baseStream ?? throw new ArgumentNullException(nameof(baseStream));
_mode = Mode.Decompress;
_disposed = false;
// Check and set decompress options
_leaveOpen = decompOpts.LeaveOpen;
_bufferSize = CheckBufferSize(decompOpts.BufferSize);
_workBuf = new byte[_bufferSize];
// Prepare LzmaStream and buffers
_lzmaStream = new LzmaStream();
_lzmaStreamPin = GCHandle.Alloc(_lzmaStream, GCHandleType.Pinned);
// Initialize the decoder
LzmaRet ret = XZInit.Lib.LzmaStreamDecoder(_lzmaStream, decompOpts.MemLimit, decompOpts.DecodeFlags);
XZException.CheckReturnValue(ret);
}
