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1997-04-16
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263 lines
/*
* History:
*
* 90/12/16 1.0 rosenkra - initial release (posted to c.s.atari.st)
*
* 91/1/7 1.1 rosenkra - change -i to -r
* - change -q to -i
* - started to add -q (quantize), not complete
* - fix bug with zero'ed accumulation arrays
* which was being done with every call to
* rasterize
* - add histogram for each rgb value (eliminate
* the "intensity order" histogram, too)
* - make UseNTSC global
* - fix scan_CM (bug in gemlib read)
* - make default -s of 40
* - histogram now impacted by -N (NTSC)
* - add -f option
* 91/2/25 1.2 rosenkra - add -b option
* - -i does not print color map. use -i -i
* 91/6/3 3.0 rosenkra - major rewrite using "flicker"
* - really interactive only now
* - ReadGIF now single entry point
* - flicker is single entry point
* - does lots of image processing (menu)
* including size, blur, brighten, log scale,
* contrast expansion, median filter
* 91/6/3 3.2 rosenkra - add convolutions
* - release to usenet
* 91/6/6 3.3 rosenkra - add cut, rotate, mirror
* - add flicker file write (*.fl)
* 91/6/9 3.4 rosenkra - fix some bugs in file write, median, log
* scale, etc
* - enlarge/shrink by direction
* - cut can work beyond screen size
* - add support for .pi1 and .pi2 files
* 91/6/13 3.5 rosenkra - point coord selection by crosshairs
* - add zoom (2x)
* - add histogram on screen in flicker screen
* - add copy orig<-->new
*
****
**** Development continued by Johan Klockars (d8klojo@dtek.chalmers.se)
****
* 92/11/09 4.0 Klockars - support for GCC, Lattice C and Turbo C added
* - changed to dynamic memory allocation
* - less memory used now
* - fixed and enhanced clipping
* - improved speed in cmaptoint
* - file loading speeded up (especially floppy)
* 92/12/14 4.1 Klockars - added quick preview using half tone matrix
* - cleaned up code to eliminate warnings
* - zoom function fixed
* - removed slow flickering
* - some improvements in the flicker routines
* - no assembly linea functions anymore
* - memory problem from v4.0 fixed
* - pipe operation support begun (MiNT)
* - JPEG support by Frank Möhle added
* - mgif.c split into three files (command, info)
* - convolution works now (it never did before)
* - command.c rewritten for array of rasters
* - some rewrites to use memset and memcpy
* - improved information screen (what)
* - speedups in histogram code
* - NTSC colour conversion is now default
* - command line switches for buffer size added
* 93/05/14 4.2 Klockars - GIF89 support added using code by Howard Chu
* - lots of rewrites to use movemem for speed
* - vertical and horizontal shearing added
* - vertical and horizontal scaleing added
* - rotation to any angle added
* - support for overscan etc by Howard Chu
* - changes to make windowed use possible
* - now works in any (?) bit plane mode
* - no wait for key on start up default
* - flag for wait on key on start up added
* - .fl format handles aspect ratios 1:1, 2:1
* - don't allocate any buffers when inquire
* - permit wildcards for files (not .fl)
* - terrible bug in PI1 read code fixed
* - rewrite of PI? code for enhanced speed
* - correct colour setting in Falcon modes
* - quick view in the Falcon true colour mode
* - upgraded to JPEG code v 4a
* - first attempt at Falcon true colour dither
* - improved and centralized key handling
* - use only one screen when in true colour
* - changed stderr to stdout in most places
* - dithering improved by table lookup
* - improved cross hair implementation
* 93/07/07 4.3 Klockars - GIF decoding speeded up very much
* - more speedup due to better interlace handling
* - drawing speedup by doing F-S line by line
* - TARGA/PPM read supported
* - NonTC greyscale support added with switch
* - Hold at end switch added
* - tell memory handler when raster[1] is freed
* - improved memory allocation error handling
* - changed help screen
* - gif loader now closes files correctly
* - name and version info moved to global.c
* - IJG gif loader used when small new image
* - better i/o handling in command.c
* - better checks for image size in process.c
* - colour support for jpeg:s added
* - source/destination instead of original/new
* - support for more than two image buffers added
* - general colour support started
* - better handling of differently sized buffers
* - mapped and direct colour in true colour mode
* - slide show option added
* - 24 bit jpeg, targa and ppm read
* - demap of gifs added
* - lots of changes in command.c and process.c
* - several files split
* - repeat and test commands added
* - tempfile bug fixed
* - fast gif loading even with small second buffer
* - better buffer size defaults
* - RGB mode for operations
* - colour dithering in true colour mode
* - TT support added
* - non-malloc jmemtos to remove reallocation errors
* - colour dithering in 16/256 colour using IJG code
* - ST colour support added
* - changes to use buffer struct
* - changes to use options struct
* - Lattice C and Turbo C fixes
* 93/09/21 4.4 Klockars - GEM interface added
* - lots of changes to incorporate GUI
* - lots of fixes and improvements to GUI
* - lots of file splits and new files
* - separate check and allocate screen
* - destination buffer save/load added
* - GIF, PPM and targa save added
* - made start with no args equivalent to -gem
* - fast assembly 8 bit chunky to planar conversion
* - progress window for write, jpeg read and quantize
* - relative positions for cut etc
* - even faster chunky to planar
* - some small fixes in display code
* - buffers in alternate ram if single screen
* - assembly optimizations for '030 GIF decode
* - assembly optimizations for normal GIF decode
* - total rewrite of menu handling code
* - centering of images added
* - skipping of conversion to grey added
* - colour dither in 16/256 colours added
* - all dither matrices read from file
* - optimized assembly code for 256 colour dither
* - small bug fix in chunky to planar routine
* - test buffer creation from menu added
* - menu option for ordered dither
* - probably fixed odd address buffer problem
* - switches from command line and/or file
* - fixes in draw select logic
* - switches from environment and program file
* - menu option for display after load
* - show and flicker draw fixes
* - support for GEMView dither matrices
* - oil paint effect from xv added
* - rewrites in command parsing code
* - assembly for 16 colour 24 bit with and w/o dither
* - bias added to convolutions for emboss etc
* - clip (0-255) disable added for convolutions
* - a few bugs in the convolution dialog fixed
* - smarter progress report window update
* - even more optimization of GIF decode
* - assembly for 16 colour mapped display with dither
* - selectable number of colours for quantize
* - assembly greyscale drawing
* - mouse controlled zoom/cut
* - improved support for alternate RAM
* - use quick chunky to planar when FS-dithering
* - assembly FS-dither
* - assembly chunky to single plane
* - flicker draw speeded up
* - some bug fixes in load/save code
* - lmin/lmax added
* - image subtract added
* - loading of AIM .IM files supported
* - lots of GUI changes
* - popup menu functionality added
* - two times median filter speed up
* - GUI fixes and updates
* - popups implemented as dialog class
* - general keyboard short-cuts added
* - save dialog popup actually used
* - new graphics mode representation
* - zoom/cut select code cleaned up
* - zoom/cut scroll around added
* - old bug in monochrome ordered dither fixed
* - many more old bugs fixed
* - wildcard .FL load added
* - file load on startup for GEM version added
* - some new switches added
* - improved checks for alternate memory
* - totally mouse controlled zoom/cut
* - click continue/end for .FL show added
* - .FL load from GUI implemented
* - convolution dialog behaves correctly again
* - support for self-loading .FL files added
* - IMG load added
* - some option dialog changes
* - scrollable normal view added
* - a number of small bugs fixed
* - switch for fit to screen on load added
* - various new switches added
* - a couple of simple new dialogs used
* - switches etc for aspect correction
* - more error alert boxes
* - faster greyscale loading of Targa and PPM
* - better handling of startup memory allocation
* - write IMG added
* - use free space in buffers instead of malloc
* - minor memory leakages patched up
* - switch for debugging added
* - full dialog functionality for IMG save
* - F-S dithering for IMG save added
* - some minor bug fixes
* - some VDI support for 256 colours implemented
* - memory alignment problems on draw fixed
* - border function added
* - extended commands for text interface
* - general image combine function added
* - support for UNDO added
* - time delay for slide show added
* - switch for TT grey mode added
* - various improvements
* - image type change added
* - local colour maps
* - better handling of image types when processing
* - real logarithms for log scale
* - all point operations done by redistribution
* MGIF 5.00 is now the official name, this is after all a _major_ update
* - more drawing types stoppable
* - a couple of more switches
* - full VDI draw support for 8 bit modes
* - default setting in program file implemented
* - improved coordinate showing for cut/zoom
* - a little MultiAES awareness added
* - smarter buffer handling for GIF load
* - in place (but slower) deinterlace
* - switch for GIF decoder select added
* - pixelize function added
* - startup dialog improved
* - switch for busy bee added
* - screen size on load for non-GUI mode
* - load control code cleaned up a bit
* - some slide-show cleanups
* - slide-show loop, random and script file added
* - (X)IMG load bugs for < '020 fixed
* - switch for stable flicker under MiNT added
* - various crash problems eliminated
* - save from destination now possible
* - smarter buffer handling for image loading
* - JPEGD use for non-mapped (not distributed)
* - more user defined for border, blur and oil
* - various bug fixes
* - various minor improvements
*/