public override void WriteTo(Stream source, Stream destination)
{
LZ4StreamFlags flags = LZ4StreamFlags.IsolateInnerStream |
(CompressionLevel > 1 ? LZ4StreamFlags.HighCompression : LZ4StreamFlags.None);
using (var lz4 = new LZ4Stream(destination, CompressionMode.Compress, flags, 4194304))
{
source.CopyTo(lz4);
}
}
/// <summary>Initializes a new instance of the <see cref="LZ4Stream" /> class.</summary>
/// <param name="innerStream">The inner stream.</param>
/// <param name="compressionMode">The compression mode.</param>
/// <param name="compressionFlags">The compression flags.</param>
/// <param name="blockSize">Size of the block.</param>
public LZ4Stream(
Stream innerStream,
CompressionMode compressionMode,
LZ4StreamFlags compressionFlags = LZ4StreamFlags.Default,
int blockSize = 1024*1024)
: this(innerStream,
ToLZ4StreamMode(compressionMode),
compressionFlags,
blockSize)
{
}
/// <summary>Initializes a new instance of the <see cref="LZ4Stream" /> class.</summary>
/// <param name="innerStream">The inner stream.</param>
/// <param name="compressionMode">The compression mode.</param>
/// <param name="compressionFlags">The compression flags.</param>
/// <param name="blockSize">Size of the block.</param>
public LZ4Stream(
Stream innerStream,
CompressionMode compressionMode,
LZ4StreamFlags compressionFlags = LZ4StreamFlags.Default,
int blockSize = 1024 *1024)
: this(
innerStream,
ToLZ4StreamMode(compressionMode),
compressionFlags,
blockSize)
{
}
/// <summary>Initializes a new instance of the <see cref="LZ4Stream" /> class.</summary>
/// <param name="innerStream">The inner stream.</param>
/// <param name="compressionMode">The compression mode.</param>
/// <param name="compressionFlags">The compression flags.</param>
/// <param name="blockSize">Size of the block.</param>
public LZ4Stream(
Stream innerStream,
LZ4StreamMode compressionMode,
LZ4StreamFlags compressionFlags = LZ4StreamFlags.Default,
int blockSize = 1024 *1024)
{
_innerStream = innerStream;
_compressionMode = compressionMode;
_highCompression = (compressionFlags & LZ4StreamFlags.HighCompression) != 0;
_interactiveRead = (compressionFlags & LZ4StreamFlags.InteractiveRead) != 0;
_isolateInnerStream = (compressionFlags & LZ4StreamFlags.IsolateInnerStream) != 0;
_blockSize = Math.Max(16, blockSize);
}
public override Stream GetStream(Stream source)
{
MemoryStream mem = new MemoryStream();
LZ4StreamFlags flags = LZ4StreamFlags.IsolateInnerStream |
(CompressionLevel > 1 ? LZ4StreamFlags.HighCompression : LZ4StreamFlags.None);
using (var lz4 = new LZ4Stream(mem, CompressionMode.Compress, flags, 4194304))
{
source.CopyTo(lz4);
}
mem.SetLength(mem.Length); //trims excess off buffer
mem.Position = 0;
return(mem);
}
/// <summary>Initializes a new instance of the <see cref="LZ4Stream" /> class.</summary>
/// <param name="innerStream">The inner stream.</param>
/// <param name="compressionMode">The compression mode.</param>
/// <param name="compressionFlags">The compression flags.</param>
/// <param name="blockSize">Size of the block.</param>
public LZ4Stream(
Stream innerStream,
LZ4StreamMode compressionMode,
LZ4StreamFlags compressionFlags = LZ4StreamFlags.Default,
int blockSize = 1024*1024)
{
_innerStream = innerStream;
_compressionMode = compressionMode;
_highCompression = (compressionFlags & LZ4StreamFlags.HighCompression) != 0;
_interactiveRead = (compressionFlags & LZ4StreamFlags.InteractiveRead) != 0;
_isolateInnerStream = (compressionFlags & LZ4StreamFlags.IsolateInnerStream) != 0;
_blockSize = Math.Max(16, blockSize);
}
