/// <summary>
/// Creates a compression stream on top of the <see cref="Stream"/> specified.
/// </summary>
/// <param name="stream">Inner stream.</param>
/// <param name="level">Compression level.</param>
/// <param name="extraMemory">Extra memory used for compression.</param>
/// <param name="leaveOpen">Leave inner stream open after disposing.</param>
/// <returns>
/// The compression stream.
/// </returns>
public static LZ4EncoderStream Encode(Stream stream, LZ4CompressionLevel level, int extraMemory = 0, bool leaveOpen = false)
{
LZ4EncoderSettings settings = new LZ4EncoderSettings
{
ChainBlocks = true,
ExtraMemory = extraMemory,
BlockSize = LZ4MemoryHelper.K64,
CompressionLevel = level
};
return(Encode(stream, settings, leaveOpen));
}
/// <summary>
/// Creates a compression stream on top of the <see cref="Stream"/> specified.
/// </summary>
/// <param name="stream">Inner stream.</param>
/// <param name="settings">Compression settings.</param>
/// <param name="leaveOpen">Leave inner stream open after disposing.</param>
/// <returns>
/// The compression stream.
/// </returns>
public static LZ4EncoderStream Encode(Stream stream, LZ4EncoderSettings settings = null, bool leaveOpen = false)
{
settings = settings ?? LZ4EncoderSettings.Default;
LZ4FrameDescriptor frameInfo = new LZ4FrameDescriptor(
settings.ContentLength,
settings.ContentChecksum,
settings.ChainBlocks,
settings.BlockChecksum,
settings.Dictionary,
settings.BlockSize);
LZ4CompressionLevel level = settings.CompressionLevel;
int extraMemory = settings.ExtraMemory;
return(new LZ4EncoderStream(
stream,
frameInfo,
i => LZ4EncodingFactory.CreateEncoder(i.Chaining, level, i.BlockSize, ExtraBlocks(i.BlockSize, extraMemory)),
leaveOpen));
}
