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 |