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- AMGIF vn 0.5 - Amiga IFF to GIF converter
-
- Converts Amiga IFF pictures to GIF. Supports 320x200 & 320x400 in up to
- 32 colors or HAM mode, and 640x200 & 640x400 in up to 16 colors. HAM mode
- pictures are reduced to 256 colors.
-
-
- This is an early version of this program. I don't really see it changing
- much, except to fix bugs, and maybe some speedup, but its too soon to
- declare this as version 1.0.
-
- This program is basically the same as IFF2GIF, by Steve Wilhite (and uses
- the modules COMPRESS.C and BUILDGIF.C from that program...), but will also
- convert HAM pictures. It also might be a bit faster with non-HAM pictures.
- It is used identically to IFF2GIF.
-
- It does, however, require a significant amount of memory to run. (roughly
- 200-300K, depending on resolution...) It can also require over 512K for
- pictures in Hires interlaced mode (ie 640 x 400). If you only have 512K
- and want to convert a 640 x 400 picture, you can still use IFF2GIF for this.
- AMGIF will eventually support a low memory usage mode, but since IFF2GIF can
- handle that for now, it doesn't.
-
- HAM images can take a significant amount of time to encode, mainly due to
- the calculations required to sort and remap the colors. HAM images are
- reduced to a 256 color map, choosing the most frequently used colors for the
- color map, and remapping all the other used colors to the nearest match in
- that color map. Many HAM images will not suffer much from this. Others may
- suffer significantly. It depends on the image.
-
- Note that AMGIF doesn't do Extra-Halfbrite pics currently, mainly because I
- don't know the format for them and have none to test with. I suspect that
- they will be incorrectly identified as HAM pics. This may be added later.
-
-
- Thanks to Steve Wilhite, who wrote COMPRESS.C and BUILDGIF.C, which
- are used in this program. He also wrote IFF2GIF.C, which I heavily
- remodeled to become AMGIF.
-
- Thanks also to Jim Kent, who wrote JIFF.C, which is also used in
- this program to read IFF pics.
-
- -->Steve Bennett Compuserve:[70046,441] 01/03/90
-