2.3.1.1 Block Type Field

Each block of compressed data begins with a 3-bit Block Type field, followed by the Block Size field, as specified in section 2.3.1.2, and then type-specific block data, as specified in section 2.3.2. Of the eight possible values, only three are valid values for the Block Type field.

Bits

Value

Meaning

001

1

Verbatim block

010

2

Aligned offset block

011

3

Uncompressed block

other

0, 4-7

Not valid