public static void Decompress(Stream inStream, Stream outStream, IProgress <ProgressReport> progress)
{
byte[] properties = new byte[5];
if (inStream.Read(properties, 0, 5) != 5)
{
throw (new Exception("input .lzma is too short"));
}
SevenZip.Compression.LZMA.Decoder decoder = new SevenZip.Compression.LZMA.Decoder();
decoder.SetDecoderProperties(properties);
long outSize = 0;
for (int i = 0; i < 8; i++)
{
int v = inStream.ReadByte();
if (v < 0)
{
throw (new Exception("Can't Read 1"));
}
outSize |= ((long)(byte)v) << (8 * i);
}
long compressedSize = inStream.Length - inStream.Position;
var lzmaProgress = new LzmaProgress(progress, "Decompressing", outSize, MeasureBy.Output);
lzmaProgress.SetProgress(0, 0);
decoder.Code(inStream, outStream, compressedSize, outSize, lzmaProgress);
lzmaProgress.SetProgress(inStream.Length, outSize);
}
public static void Compress(Stream inStream, Stream outStream, IProgress <ProgressReport> progress)
{
SevenZip.Compression.LZMA.Encoder encoder = new SevenZip.Compression.LZMA.Encoder();
CoderPropID[] propIDs =
{
CoderPropID.DictionarySize,
CoderPropID.PosStateBits,
CoderPropID.LitContextBits,
CoderPropID.LitPosBits,
CoderPropID.Algorithm,
CoderPropID.NumFastBytes,
CoderPropID.MatchFinder,
CoderPropID.EndMarker
};
object[] properties =
{
(Int32)(1 << 26),
(Int32)(1),
(Int32)(8),
(Int32)(0),
(Int32)(2),
(Int32)(96),
"bt4",
false
};
encoder.SetCoderProperties(propIDs, properties);
encoder.WriteCoderProperties(outStream);
Int64 inSize = inStream.Length;
for (int i = 0; i < 8; i++)
{
outStream.WriteByte((Byte)(inSize >> (8 * i)));
}
var lzmaProgress = new LzmaProgress(progress, "Compressing", inSize, MeasureBy.Input);
lzmaProgress.SetProgress(0, 0);
encoder.Code(inStream, outStream, -1, -1, lzmaProgress);
lzmaProgress.SetProgress(inSize, outStream.Length);
}
public static void Compress(Stream inStream, Stream outStream, IProgress<ProgressReport> progress)
{
SevenZip.Compression.LZMA.Encoder encoder = new SevenZip.Compression.LZMA.Encoder();
CoderPropID[] propIDs =
{
CoderPropID.DictionarySize,
CoderPropID.PosStateBits,
CoderPropID.LitContextBits,
CoderPropID.LitPosBits,
CoderPropID.Algorithm,
CoderPropID.NumFastBytes,
CoderPropID.MatchFinder,
CoderPropID.EndMarker
};
object[] properties =
{
(Int32)(1 << 26),
(Int32)(1),
(Int32)(8),
(Int32)(0),
(Int32)(2),
(Int32)(96),
"bt4",
false
};
encoder.SetCoderProperties(propIDs, properties);
encoder.WriteCoderProperties(outStream);
Int64 inSize = inStream.Length;
for (int i = 0; i < 8; i++)
{
outStream.WriteByte((Byte)(inSize >> (8 * i)));
}
var lzmaProgress = new LzmaProgress(progress, "Compressing", inSize, MeasureBy.Input);
lzmaProgress.SetProgress(0, 0);
encoder.Code(inStream, outStream, -1, -1, lzmaProgress);
lzmaProgress.SetProgress(inSize, outStream.Length);
}
public static void Decompress(Stream inStream, Stream outStream, IProgress<ProgressReport> progress)
{
byte[] properties = new byte[5];
if (inStream.Read(properties, 0, 5) != 5)
throw (new Exception("input .lzma is too short"));
SevenZip.Compression.LZMA.Decoder decoder = new SevenZip.Compression.LZMA.Decoder();
decoder.SetDecoderProperties(properties);
long outSize = 0;
for (int i = 0; i < 8; i++)
{
int v = inStream.ReadByte();
if (v < 0)
throw (new Exception("Can't Read 1"));
outSize |= ((long)(byte)v) << (8 * i);
}
long compressedSize = inStream.Length - inStream.Position;
var lzmaProgress = new LzmaProgress(progress, "Decompressing", outSize, MeasureBy.Output);
lzmaProgress.SetProgress(0, 0);
decoder.Code(inStream, outStream, compressedSize, outSize, lzmaProgress);
lzmaProgress.SetProgress(inStream.Length, outSize);
}
