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echo: c_plusplus
to: JERRY COFFIN
from: HERMAN SCHONFELD
date: 1997-03-17 19:07:00
subject: PCX file format

JC>That would cover at least PCX and BMP files.  Either _can_ be
JC>compressed, but neither requires it.  However, it might be worthwhile to
JC>support compression as well: both use RLE which is quite easy to
JC>decompress.
RLE's aren't just the answer for compression. Your better of storing your 
bitmaps in a datafile which is compressed using LZSS algorithm. When you load 
your bitmaps your only loading a much smaller version (saves alot of disk 
reading, which can get very annoying in a game etc) and use an advanced RLE 
method, or using DCT coding (with lookup tables) can prove VERY efficient.
DCT coding is the same method used to compress jpeg's.
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