Technical Information

This chapter is mostly for those curious about how JPEGView works some of its magic.  

JPEGView 3.1 contains over 25,000 lines of C code, and over 2,700 lines of 68020 assembly code.  The bulk of the assembly code is used for the custom dithering and scaling routines, along with several supplemental functions for color quantization and GIF decoding.


GIF viewing

GIF viewing. 


Dithering and drawing

Dithering and drawing 


Converting between PICT and JFIF

Converting between PICT and JFIF 


Floating windows

Floating windows. 