go/src/image/jpeg/huffman.go

const maxCodeLength …

const maxNCodes …

const lutSize …

type huffman …

var errShortHuffmanData …

// ensureNBits reads bytes from the byte buffer to ensure that d.bits.n is at
// least n. For best performance (avoiding function calls inside hot loops),
// the caller is the one responsible for first checking that d.bits.n < n.
func (d *decoder) ensureNBits(n int32) error { … }

// receiveExtend is the composition of RECEIVE and EXTEND, specified in section
// F.2.2.1.
func (d *decoder) receiveExtend(t uint8) (int32, error) { … }

// processDHT processes a Define Huffman Table marker, and initializes a huffman
// struct from its contents. Specified in section B.2.4.2.
func (d *decoder) processDHT(n int) error { … }

// decodeHuffman returns the next Huffman-coded value from the bit-stream,
// decoded according to h.
func (d *decoder) decodeHuffman(h *huffman) (uint8, error) { … }

func (d *decoder) decodeBit() (bool, error) { … }

func (d *decoder) decodeBits(n int32) (uint32, error) { … }