case 2:
		// FSE_Compressed_Mode
		if cap(r.fseScratch) < 1<<info.maxBits {
			r.fseScratch = make([]fseEntry, 1<<info.maxBits)
		}
		r.fseScratch = r.fseScratch[:1<<info.maxBits]

		tableBits, roff, err := r.readFSE(data, off, info.maxSym, info.maxBits, r.fseScratch)
		if err != nil {
			return 0, err
		}
		r.fseScratch = r.fseScratch[:1<<tableBits]

		if cap(r.seqTableBuffers[kind]) == 0 {

	var count int
	if hdr < 128 {
		// The table is compressed using an FSE. RFC 4.2.1.2.
		if len(r.fseScratch) < 1<<6 {
			r.fseScratch = make([]fseEntry, 1<<6)
		}
		fseBits, noff, err := r.readFSE(data, off, 255, 6, r.fseScratch)
		if err != nil {
			return 0, 0, err
		}
		fseTable := r.fseScratch

		if off+int(hdr) > len(data) {
			return 0, 0, r.makeEOFError(off)
		}

	seqTableBuffers [3][]fseBaselineEntry

	// Scratch space used for small reads, to avoid allocation.
	scratch [16]byte

	// A scratch table for reading an FSE. Only temporarily valid.
	fseScratch []fseEntry

	// For checksum computation.
	checksum xxhash64
}

// NewReader creates a new Reader that decompresses data from the given reader.
func NewReader(input io.Reader) *Reader {
	r := new(Reader)