fr32

Documentation

Index

• Constants
• Variables
• func BufSize(sz abi.PaddedPieceSize) int
• func NewPadWriter(dst io.Writer) io.WriteCloser
• func NewUnpadReader(src io.Reader, sz abi.PaddedPieceSize) (io.Reader, error)
• func NewUnpadReaderBuf(src io.Reader, sz abi.PaddedPieceSize, buf []byte) (io.Reader, error)
• func Pad(in, out []byte)
• func Unpad(in []byte, out []byte)

Constants

const PaddedFr32Chunk abi.PaddedPieceSize = 128

PaddedFr32Chunk is the size of a UnpaddedFr32Chunk chunk after fr32 padding

const UnpaddedFr32Chunk abi.UnpaddedPieceSize = 127

UnpaddedFr32Chunk is the minimum amount of data which can be fr32-padded Fr32 padding inserts two zero bits every 254 bits, so the minimum amount of data which can be padded is 254 bits. 127 bytes is the smallest multiple of 254 bits which has a whole number of bytes.

Variables

var MTTresh = uint64(512 << 10)

Functions

func BufSize

func BufSize(sz abi.PaddedPieceSize) int

func NewPadWriter

func NewPadWriter(dst io.Writer) io.WriteCloser

func NewUnpadReader

func NewUnpadReader(src io.Reader, sz abi.PaddedPieceSize) (io.Reader, error)

func NewUnpadReaderBuf

func NewUnpadReaderBuf(src io.Reader, sz abi.PaddedPieceSize, buf []byte) (io.Reader, error)

func Pad

func Pad(in, out []byte)

func Unpad

func Unpad(in []byte, out []byte)