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DUGL Viewer 0.4 prerelease (Announce)

posted by DOS386, 17.08.2011, 08:46
(edited by DOS386 on 17.08.2011, 09:00)

> I try to run duglviewer in a Windows XP DOS Box
> and I always get "DUGL init error
> My suggestion is to tell the user what kind of error occured
if (Detect_DOS_Now()==false) /* then */ {
printf ("This program must be run in DOS mode");
abort();
}

> Honestly, though, not sure what DUGL supports, but perhaps
> DOS386 can enlighten us, does PNG support interlacing?
YES (2-dimensional) ... RTFS ("S"=spec)

> JPEG?
only rarely used ???

> BMP?
NO

> (I think at least one of those also does.)
GIF does (1-dimensional)

> Beware hardcoded version checks.
Why ???

> Why we shoud have a way to overide WiNT check ?
> Any hope to get true VESA 2.0LFB in such OS ?
> Any way, I can easily add a parameter on CFG
> file to enable/disable this check.
IMHO no point 3 x :-(

> would have a sense if you have also VESA 1.2 bankswitch
> support that can (sometimes) run under NT OS
IMHO no point. VESA B***S*** 1.2 might be useful for 80386 compatible stuff, but not if DUGL needs MMX.

> JPEG (maybe 320x200 or bigger) in EXIF header that can
> But when image is processed in varius editors
> they usually remove thumbnails
Danger!!! Bad editors change main image and keep thumbnail. Malicious editors even allow to place a deliberately false thumbnail.

Tests:

+ it works

+ PNG works (interlace not tested ... 16 bppc not tested ... other silly stuff not tested)

- multiple masx works partially only, "see only JPG" is preselected (why?), there is no "see all supported files" (DUGLPLAY has same problem)

- shot feature is "old" - only one shot, only JPG, inherently lossy:

[image]

- buttons "prev" "next" "earliest" and "last" are "messed up"

- "multi-image" mode is strange and too complicated, idea to fix:

+ + Remove F3-vs-ALT-F3 and CFG entry on them
+ + Whenever loading an image, always remember full directory (all supported files, clamp to some reasonable value (10'000?))
+ + Add 4 modes (selectable besides "Fit View")
+ + + See all images by Ext-Name (default) BLAH.BMP -> XXX.GIF -> H0.PNG -> H2.PNG -> ZZZ.PNG -> ATOMBOMB.WEP
+ + + See all images by Name-Ext ATOMBOMB.WEP -> BLAH.BMP -> H0.PNG -> H2.PNG -> XXX.GIF -> ZZZ.PNG
+ + + See multiple images by number C8.PNG -> C9.PNG -> C10.PNG -> C11.PNG (no C13.PNG if C12.PNG not present)
+ + + See just 1 image (lock the 4 buttons then)

- strange dotty rectangle (partially visible in the shot)

Wishlist (highest priority on the top):

### Update shot feature (from DUGLPLAY)

### Fix multiple masx

### Fix multi-image

### Add "This program must be run in DOS mode" without override

## WebP

## Add "Save image as 24 bpp BMP"

# Fix strange dotty rectangle (partially visible in the shot)

# More zoom strategies (see older post)

# More zoom algo's (gamma-correct Lanczos)

# Display Metadata (EXIF in JPG, comments in GIF and PNG, ??? in WebP)

# Warn about AGIF and APNG

---
This is a LOGITECH mouse driver, but some software expect here
the following string:*** This is Copyright 1983 Microsoft ***

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