fastcdc

type ChunkHashWriter func(ch *pb.ChunkHash) error

type Chunker struct {
	// contains filtered or unexported fields
}

type OpType byte

type OperationWriter func(op *pb.Operation) error

type Options struct {
	// NormalSize is the target chunk size. Typically a power of 2. It must be in the
	// range 64B to 1GiB.
	AverageSize int

	// (Optional) MinSize is the minimum allowed chunk size. By default, it's set to
	// AverageSize / 4.
	MinSize int

	// (Optional) MaxSize is the maximum allowed chunk size. By default, it's set to
	// AverageSize * 4.
	MaxSize int

	// (Optional) Sets the chunk normalization level. It may be set to 1, 2 or 3,
	// unless DisableNormalization is set, in which case it's ignored. By default,
	// it's set to 2.
	Normalization int

	// (Optional) DisableNormalization turns normalization off. By default, it's set to
	// false.
	DisableNormalization bool

	// (Optional) Seed alters the lookup table of the rolling hash algorithm to mitigate
	// chunk-size based fingerprinting attacks. It may be set to a random uint64.
	Seed uint64

	// (Optional) BufSize is the size of the internal buffer used while chunking. It has
	// no effect on the chuking output, but performance is improved with larger buffers.
	// It must be at least MaxSize. Recommended values are 1 to 3 times MaxSize. By
	// default it is set to MaxSize * 2.
	BufSize int
}