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- HamLab Version 1.1
- Configuration File Format
-
- (c) Copyright 1990, 1991 J. Edward Hanway
- All rights reserved.
-
- INTRODUCTION
-
- The HamLab configuration file is a text file which HamLab uses to determine
- what input filters it has available, as well as other miscellaneous
- configuration options. Each time HamLab is run, it looks for the
- configuration file in the following places, in order:
-
- HamLab.config (in the current directory)
- DEVS:HamLab.config
- S:HamLab.config
-
- FILE FORMAT
-
- In the configuration file, A '#' denotes that the rest of the line is a
- comment. Blank lines and lines starting with a '#' are skipped. All other
- lines must contain one of the following commands:
-
- Cache12Bit size (32 bit signed value)
-
- This specifies the maximum size, in bytes, of HamLab's 12-bit
- temporary data that will be kept in RAM. If an image requires more
- room than this value, it will be kept in a temporary file (in
- whatever directory you specify with TempPath). Some useful values
- to use here are:
- 0 -- always use a file
- -1 -- always try to keep it in memory
- 130000 -- try to keep 320 x 200 and smaller in memory
-
- ColorFile "file name"
-
- Specifies the name of the default color response curve file that is
- loaded whenever HamLab is started. The file must be in the
- directory specified by ColorPath.
-
- ColorPath "disk path"
-
- Specifies the default directory where color response curve files
- are kept. (You can load/save color response curves from/to any
- directory; this is just the default value.)
-
- ConstrainedScale 0/1
- FastAnalyze 0/1
- FixBackground 0/1
- FreezePalette 0/1
- Interlace 0/1
- SHAM 0/1
- UsePipes 0/1
-
- These (optional) lines specify the initial values for HamLab's
- options.
-
- Hsqueeze 0/1 (*)
-
- HSqueeze is obsolete in version 1.1 and will be ignored. Use
- "XScale 50%" instead.
-
- DitherType 0-6
-
- Specifies the initial dithering option. The possible values are
- as follows:
- 0 -- no dithering
- 1 -- Serpentine Floyd-Steinberg 4 term error diffusion
- 2 -- Serpentine Jarvis, Judice, & Ninke 12 term error
- diffusion
- 3 -- Serpentine Stucki 12 term error diffusion
- 4 -- 4x4 Dispresed Dot Ordered Dither
- 5 -- Random Dither
- 6 -- 4x4 Spiral Clustered Dot Ordered Dither
-
- FilterPath "disk path"
-
- Specifies the disk path where the filter programs can be found.
-
- Format "matchstring" "filtername"
-
- One of these lines must be present for every input filter. The
- first string is the pattern which identifies that type of file.
- The second is the name of the filter program.
-
- Gamma x.y
-
- Specifies the initial Gamma value. The value must be a value
- between 0.1 and 9.9, and must be in the following exact form:
- digit, decimal point, digit.
-
- InPath "disk path"
- OutPath "disk path"
-
- These set the initial directories for the input and output file
- requesters. (Of course, you can read and write from/to any
- directory; these are just for convenience.)
-
- TempPath "disk path"
-
- Specifies the disk path where any temporary file(s) will be
- created.
-
- XScale num[%]
- YScale num[%]
-
- These specify the initial scaling values. If the number is
- followed immediately (no spaces) by a percent sign, it is a
- percentage, otherwise, it is a fixed size.
-
-
- SUGGESTED CONFIGURATIONS
-
- If you've got memory to burn, leave UsePipes turned off, set TempPath to
- RAM: and set Cache12Bit to -1. This will keep both 24-bit and 12-bit
- temporary images in memory. Beware, though, a 640 x 480 image will take
- up about 1.5 MEGS just in temporary files.
-
- If you're short on memory, turn UsePipes on, set TempPath to a disk
- directory (a hard disk is nice, but not necessary) and set Cache12Bit to
- something low, like 0. This will eliminate the 24 bit file and keep the
- 12-bit temporary file on disk. If you then save a picture without
- displaying it first, then HamLab will only need a few lines of the picture
- in memory at a time.
-
- Setting TempPath to a RAM disk may be useful. Even though that means that
- temporary files will be kept in RAM, they won't require one huge continuous
- chunk of memory.
-
- Setting a TempPath is important, even if you set Cache12Bit large enough
- that temporary files are normally kept in memory. If HamLab cannot
- allocate a large enough chunk of memory for the image, it will
- automatically use a file instead.
-
-