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1992-08-08
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Special notes for CJPEG_ST.TTP / DJPEG_ST.TTP
This Version (V3A) of the IJG's JPEG SOFTWARE has been subject to several
Atari - dependent changes :
- Compiled with Turbo-C (smaller and faster executeables)
- Memory manadgement :
+ by default, all availeable memory is beeing used
[ free memory is determined by coreleft() now]
+ swap-files : if the enviroment variable TMP or TEMP points to a valid
directory, temporary files are put there instead of the working directory.
- Commandline / Desktop usage:
+ though cjpeg/djpeg use TWO_FILE_COOMADLINE (this means you have to name
both input -and outputfile in the commandline - see file USAGE),
you can use them with your desktop as an "installed application" :
+ If djpeg only gets one filename (the .jpg file), it produces a .gif
file of the same name (djpeg foo.jpg produces foo.gif) as output.
Cjpeg : almost the same. Parameter is the name of the source file,
a .jpg file with the same name is produced.
- progress monitor :
+ completion is displayed in percent.
- speed :
avarage decoding / encoding time is 3 - 5 minutes.
(djpeg takes a lot of time for 2-phase-quantization - see USAGE)
Share & enjoy,
frank
(frank.moehle@arbi.informatik.uni-oldenburg.de)