home *** CD-ROM | disk | FTP | other *** search
- Short: Very fast PowerPC (WarpOS) JPEG-Viewer
- Author: stefan.robl@tirnet.de (Stefan Robl)
- Uploader: stefan.robl@tirnet.de (Stefan Robl)
- Version: 1.22
- Type: gfx/show
-
-
- Description
- -----------
- This program is a simple but very fast jpeg viewer for Amigas having
- a PPC inside and WarpOS running.
- The viewer supports as far as I know all image types of JPEG and opens
- a window on a public screen (default: default public screen).
- The public screen must be running under CyberGraphX or Picasso96 in
- Hi/True-Color (>=15 Bit).
- PPCjpeg is also able to display images which are bigger than your
- Workbench screen, you can scroll around in the image (using scroll-bars
- and/or the cursor keys).
-
- The cursor key-scrolling supports the following types:
- - 20-pixel scrolling (just press the cursor keys)
- - 200-pixel scrolling (press SHIFT together with the cursor keys)
- - single pixel scrolling (ALT and the cursor keys)
- - "border jumping" (ALT, SHIFT and the cursor keys together)
-
- The program also displays the file name, size (pixels), raw-size (kb/MB)
- and the type (COLOR, GRAYSCALE) of the loaded JPEG image.
-
- PPCjpeg also supports to save the decoded image as PPM-file (just use
- the menu entry "Save as PPM...").
-
- Usage
- -----
- PPCjpeg File/M,Left/N,Top/N,Width/N,Height/N,Center/S,AbortLeft/S,PubScreen/K
-
- File : filename of an JPEG-image or nothing -> FileRequester
- Left, Top : left/top-Edge of the window (optional)
- Width, Height: max. width/height of the window (optional)
- Center : centers the window on the screen (optional)
- AbortLeft : close the window with a simple left mousebutton click
- PubScreen : name of a Hi/TrueColor-Public Screen to open the window on (optional)
-
- Example: PPCjpeg dh4:image4.jpg Center
- (opens the picture "dh4:image4.jpg" centered on the workbench)
-
- Requirements
- ------------
- o AmigaOS 3.x+ (successfully tested with OS 3.1 and 3.0)
- o CyberGraphX or Picasso96 with a Workbench running in HiColor (>=15 Bit)
- o enough RAM to hold the complete image data (>=32MB recommended!)
- o PowerPC-Board
- o WarpOS, successfully tested with WarpUP Release 3, but works also under V7
- (Thanks to Robert Nilsson for reporting this to me!)
- WarpOS is available at www.haage-partner.com under the PPC download area.
-
-
- Distribution
- ------------
- PPCjpeg is FREEWARE. I would be happy to get an eMail if you like/use
- it or if you have any questions about this program.
-
- This JPEG viewer is based on the sources of the Independent JPEG Group (V6b).
-
- Future
- ------
- - Multible file support for the requester & dos parameters
- - Additional fileformats
- - New GUI
- - Zooming
- - Rotation
- - and all of your ideas... ;)
-
- History
- -------
- V1.0: (30.12.98)
- ** first public release **
-
- V1.1: (02.01.99)
- - Added an ASL-Requester if no filename is specified
- Thanks to Lars Broweleit for this suggestion!
- - Added PublicScreen-support (keyword "PubScreen")
- Thanks again, Lars!
- - Removed the superbitmap-stuff and replaced it by own scrolling
- routines (-> much faster). This should save also a little
- bit memory...
- - Added <Esc> button event to close the window by keyboard
- Thanks to Audun Evensen for this suggestion!
- - Added full keyboard-support (scrolling with cursors, shift, alt)
- - Added the Keywords "Center", "Left", "Top", "Width", "Height" for
- pre-defined window-positions
- - Improvements of the error abort function
- - Now it's possible to save the decoded image as PPM-file!
- V1.11: (03.01.99)
- - dramatically speedup on window refreshes
- V1.12: (11.01.99)
- - Sven Ottemann told me that there are JPEG-images which cannot
- be shown with PPCjpeg V1.1, these image files have illegal
- headers, I changed a little bit to ignore those headers.
- Many thanks for this info, Sven!
- - Changed the window menu to newlook, forgot to set the flag...
- - Now PPCjpeg only displays the filename without the whole path
- in the window-titlebar
- V1.2: (15.01.99)
- - Fixed (finally) the bug which prevented PPCjpeg to read all
- jpeg files. The problem was an illegal jpeg format saved
- with "Adobe Photoshop"... I removed this problem by using the
- latest sources of "The Independent JPEG Group" (V6b).
- - Added the tooltype "AbortLeft" which allows to close the window
- with a simple left click on it...
- Thanks to Manfred Ambros for this idea, I like it! :)
- - Added wheelmouse support. This is yet untestet but it should work...
- Thanks to Audun E. for this idea!
- V1.21: (18.01.99)
- - Increased the jumps with wheelmouse by three (Thanks Audun!).
- - Finally removed the NewLookMenu-bug... well, CGX displayed it on
- my computer always right... grrr... :) (Thanks to Tim Riedel!)
- V1.22: (17.03.99)
- - Removed a problem with refreshing window, now it should work
- correctly. Thanks Audun for reporting this... ;)
- - Added the new mousewheel (left-right)-functions provided by
- newmouse (by Alessandro Zummo). Thanks Audun!
- - PPCjpeg should now be about at least 8-10% faster than 1.21 and
- below because I now use the newest StormC linkerlibs... ;)
- I also raised the height of the decode-stripe to 150 pixels,
- this minimizes the context switches a little bit more and
- I think that decoding is now even faster... :)
-
- Author
- ------
- Stefan Robl <stefan.robl@tirnet.de>
- More infos about ArtecScan, PPCjpeg and my other Projects?
-
- Just visit my Homepage: http://www.tirnet.de/~srobl
-
-
- Have fun!
-
-