Ideas and such

header1 - page header

PAPUP Version 0 - UUID: 46e1f803-12ba-4681-8a6e-4176ca24ea7e - Page: 1/3 - Blocks: 384 - Columns: 16

PAPUP Version %d - UUID: %s - Page: %d/%d - Blocks: %d - Columns: %d

  5: "PAPUP"
  1: version uint8
 16: uuuuuuuuiiiidddd
  4: page uint32
  4: pages uint32
  2: blocks uint16
  2: columns uint16
---------------------
 34: TOTAL
 64: RS'ed

header2 - payload header

Payload size: 5412548
Redundancy: 3, ReedSolomon(255, 192)
Compression: 1, BZIP2(9)
Encryption: 0, None

  8: payload size (bytes) uint64
  1: redundancy uint8
  1: redundancy_padding uint8
  1: compression uint8
  1: compression_padding uint8
  1: encryption uint8
  1: encryption_padding uint8
-----------------------------
 14: TOTAL
 32: RS'ed

Values for payload header configurations

Redundancy

0x00: no redundancy added (not recommended)
0x01: Reed-Solomon(255, 247)
0x02: Reed-Solomon(255, 239)
0x03: Reed-Solomon(255, 223) (default)
0x04: Reed-Solomon(255, 191)
0x05: Reed-Solomon(255, 127)

Compression

0x00: no compression
0x01: bzip2, compression level 9

Encryption

0x00: no encryption

header3/4 - clear/crypt meta

1+X: nFname
2+X: nnComment
1+X: MIME-Type
 20: sha1 ??
  8: timestamp


+-------+-------+--------+--------+-----------+
| h1    | h2    | h3     | h4     | content   |
+-------+-------+--------+-----------+
|       |       |        | compress           |
|       |       |        +--------------------+
|       |       |        | crypt              |
|       |       +--------+--------------------+
| RS-1  | RS-2  | RS-content                  |
+---------------+-----------------------------+

+-------------+--------------------------+
| page header | page data                |
+-------------+--------------------------+
| RS(64,34)   |                          |
+-------------+--------------------------+