convert pdf/djvu -> .cb (customized book)
CB is a simple WYSIWYG image based format for e-books
| Offset | Size (bytes) | Description |
|---|---|---|
| 0x00 | 2 | 'CB' Signature |
| 0x02 | 1 | Format type |
| 0x03 | 1 | Flags (0- without TOC, 1 - with TOC) |
| 0x04 | 4 | Pages qty |
| 0x08 | 2 | Width |
| 0x0A | 2 | Height |
| 0x0C | variable. Pages x Width x Height / 8 | Monochrome pages image data |
You can read CB book using TurtleBook (https://github.com/fel88/TurtleBook)
You can also convert .cb book to the mirror mode
This can save you about 10% of the reading time, because in this case you don't need to make any saccades with your eyes.
https://en.wikipedia.org/wiki/Saccade
https://en.wikipedia.org/wiki/Boustrophedon
Dithering code from here: https://github.com/cyotek/Dithering