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- Short: Sources of Pac.Pic. xfdmaster client
- Author: Kyzer/CSG <kyzer@4u.net>, François Lionet
- Uploader: Kyzer/CSG <kyzer@4u.net>
- Type: dev/src
- Requires: util/pack/xfdmaster.lha
-
- This is the source code of XFD's Pac.Pic. slave, for the curious.
-
- Pac.Pic. is an Amiga picture compression module used in AMOS Basic. It was
- created by François Lionet. The code for this slave is based on the
- original source code for the picture compactor extension, which came
- bundled with AMOS 1.3 all those years ago.
-
- Pac.Pic. is simply an RLE compressor, that re-orders the screen before
- compression in a way which favours large vertical lumps of colour. It
- RLE-encodes the reordered screen without using a special marker code,
- but rather one bit for every byte on the screen to say if it's a repeat
- or not. This large list of bits is then itself RLE encoded, which brings
- down the size quite a lot.
-
- This XFD slave 'decrunches' the picture to the uncompressed IFF ILBM
- picture format.
-