/// <summary>Creates new instance of <see cref="LZ4ChainDecoder"/>.</summary>
/// <param name="blockSize">Block size.</param>
/// <param name="extraBlocks">Number of extra blocks.</param>
public LZ4ChainDecoder(int blockSize, int extraBlocks)
{
blockSize = Mem.RoundUp(Math.Max(blockSize, Mem.K1), Mem.K1);
extraBlocks = Math.Max(extraBlocks, 0);
_blockSize = blockSize;
_outputLength = Mem.K64 + (1 + extraBlocks) * _blockSize + 8;
_outputIndex = 0;
_outputBuffer = (byte *)Mem.Alloc(_outputLength + 8);
_context = (LZ4Context *)Mem.AllocZero(sizeof(LZ4Context));
}
/// <summary>Creates new instance of <see cref="LZ4HighChainEncoder"/></summary>
/// <param name="level">Compression level.</param>
/// <param name="blockSize">Block size.</param>
/// <param name="extraBlocks">Number of extra blocks.</param>
public LZ4HighChainEncoder(LZ4Level level, int blockSize, int extraBlocks = 0) :
base(true, blockSize, extraBlocks)
{
if (level < LZ4Level.L03_HC)
{
level = LZ4Level.L03_HC;
}
if (level > LZ4Level.L12_MAX)
{
level = LZ4Level.L12_MAX;
}
_context = (LZ4Context *)Mem.AllocZero(sizeof(LZ4Context));
LZ4_64_HC.LZ4_resetStreamHC(_context, (int)level);
}
/// <summary>Creates new instance of <see cref="LZ4FastChainEncoder"/></summary>
/// <param name="blockSize">Block size.</param>
/// <param name="extraBlocks">Number of extra blocks.</param>
public LZ4FastChainEncoder(int blockSize, int extraBlocks = 0) :
base(true, blockSize, extraBlocks)
{
_context = (LZ4Context *)Mem.AllocZero(sizeof(LZ4Context));
}