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- **
- ** $Id: CHANGES.DOC,v 23.2 93/05/24 16:03:22 chris Exp $
- **
- ** $Author: Christian A. Weber $
- ** $Release: 23.2 $
- ** $Date: 93/05/24 16:03:22 $
- **
-
-
-
-
- CHANGES FOR V23.2 (24-May-93)
- -----------------
-
- * The library no longer has a (unused) data hunk. This reduces its size.
-
- * iff.lib now has a version string.
-
-
- CHANGES FOR V23.1 (23-May-93, not released)
- -----------------
-
- * IFFL_PushChunk() and IFFL_PopChunk() know how to deal with nested FORMs.
- The FORM type can be written manually (with a WriteChunkBytes() after
- the IFFL_PushChunk(..., ID_FORM), or automatically.
-
-
- CHANGES FOR V22.4 (02-Jun-92)
- -----------------
-
- * IFFL_GetViewModes() doesn't set the HAM bit anymore if the IFF file has
- no CAMG chunk. This is required for the AGA modes to work.
-
-
- CHANGES FOR V22.3
- -----------------
-
- * IFFL_SaveClip() and IFFL_SaveBitMap() won't crash on 68000 processors
- anymore.
-
- * Minor bugs in documentation fixed.
-
-
- CHANGES FOR V22.2
- -----------------
-
- * Superfluous seeking in IFFL_OpenIFF() removed (occurred only if the
- file was compressed with xpk)
-
- * On popular demand, the MoviePRO ANIM player (plays Sculpt MOVIE and ANIM5)
- is now included. It's still a BETA version, so use with care...
-
-
- CHANGES FOR V22.1
- -----------------
-
- * iff.library now makes use of the powerful "xpk" data compression standard
- for the Amiga. If xpkmaster.library is installed, the IFFL_OpenIFF()
- function (in read mode) will automatically recognize and decompress all
- IFF files which are compressed with one of the xpk compression schemes.
- This is totally transparent, and no changes whatsoever are needed.
-
-
- CHANGES FOR V21.2
- -----------------
-
- * IFFL_SaveClip() and IFFL_SaveBitMap() are now MUCH faster, and use
- less stack.
-
- * Decompression is a tad faster, and won't corrupt memory even if
- the input file was corrupt.
-
-
- CHANGES FOR V21.1
- -----------------
-
- This is a major upgrade. Although old binaries are 100% compatible, the
- programmer's interface changed. Here's what's new:
-
- * New names for library functions, to avoid conflicts with Commodore's
- "iffparse.library". Basically, each function of iff.library has
- IFFL_ prepended to its name (IFFL_OpenIFF ...).
-
- * OpenIFF() and NewOpenIFF() are both obsolete now. The former had this
- design stupidity which would load 8SVX files into CHIP RAM; the latter
- was added to remedy this situation, but actually the memory attribute
- parameter of NewOpenIFF() was very rarely needed.
- Now there's just one IFFL_OpenIFF() function, which behaves like
- OpenIFF() except that it does NOT load 8SVX files to CHIP RAM.
- It also has an additional parameter which lets you specify a mode
- (Read or write).
-
- * A set of powerful IFF writing functions has been added. With these
- functions, you can create any type of IFF FORM (not just ILBM).
- Look at the autodocs and example programs for more information.
-
- * If you define the symbol IFFLIB_PRE21NAMES in your source codes, you
- still can compile them using the old naming conventions. However,
- you will lose the ability to use iffparse.library in the same source
- files because of some name clashes.
-
- * In IFFL_SaveClip() and IFFL_SaveBitMap(), the color values are now
- calculated correctly (multiplied, not shifted).
-
-
- CHANGES FOR V20.1
- -----------------
-
- * No changes to the library, it's still 19.1
-
- * Lots of new features and bug fixes for ShowIFF (COMMAND option,
- AppIcon mode under Kickstart 2.x, ...), see ShowIFF/ShowIFF.doc
- for details!
-
-
-
- CHANGES FOR V19.1 (09-Oct-90)
- -----------------
-
- * SaveClip() and SaveBitMap() now correctly write 24 bitplane pictures.
-
- * ShowIFF correctly handles scroll boundaries under Kickstart 2.0, this
- seems to be a 2.0 bug and so it may break again with new 2.0 releases.
-
-
- CHANGES FOR V18.8
- -----------------
-
- * Modula-2 definition module and example program added, (contributed by
- Olivier Schraner, thanx!).
-
- * ShowIFF now adjusts the screen size according to the "normal" values
- stored in GfxBase, for users of MoreRows or Kickstart 2.0.
-
- * ShowIFF no longer crashes if started from WorkBench under Kickstart 2.0.
- This was actually a bug in my startup code.
-
- * Minor rearrangements in iff.h, iff.i, IFFGlue.asm and example files
-
- * No functional changes to the library (except new version number ;-)
-
-
- CHANGES FOR V18.7 (13-Apr-90)
- -----------------
-
- * You can now use DecodePic() to decode pictures with as many as 24
- bitplanes. Although the original BitMap structure has only 8 pointers,
- you can simply add more plane-pointers at the end of the structure.
- This feature enables my ShowIFF tool to directly display 24-bit pictures
- (with limited colors, of course).
-
-
- CHANGES FOR V18.6 (11-Apr-90)
- -----------------
-
- * DecodePic() can deal with pictures which have more planes than the
- destination BitMap. It will decode as many planes as the BitMap.Depth
- field of your BitMap structure specifies, all other planes will be
- discarded. As a result of this, the error message IFF_TOOMANYPLANES
- is now obsolete.
-
-
- CHANGES FOR V18.5 (12-Mar-90)
- -----------------
-
- * OpenIFF() no longer trashes memory if a corrupt FORM (with some random
- bytes at the end of file, as generated by old DPaint) is loaded.
-
- * SHAM pictures (HAM with palette changes at each line) are now fully
- supported by ShowIFF.
-
-
- CHANGES FOR V18.4 (28-Feb-90)
- -----------------
-
- * The library now handles poorly written BODY chunks correctly (such as
- written by old DPaint versions). It can now deal with pictures with
- a height or depth of 0.
-
-
- CHANGES FOR V18.2 (25-Feb-90)
- -----------------
-
- * The type IFFFILE has been redefined from 'CPTR' to 'void *'. This allows
- you to use pointers to ULONG as your IFF file handles (which are easier
- to use, see AnimExample.c), and the compiler won't generate warnings if
- you pass these variables to the IFF library functions.
-
- * FindChunk() can be called with a chunk ID of 0. It then returns a pointer
- to the first byte after the end of the current FORM. This can be used
- by ANIM readers for jumping from FORM to FORM (see example program).
-
-
- CHANGES FOR V18.1 (21-Feb-90)
- -----------------
-
- * New function ModifyFrame(). This functions takes a bitmap and modifies
- its planes according to a supplied DLTA chunk. This allows you to
- easily display DPaint III and compatible animations.
-
- * GetViewModes() now correctly masks out the forbidden bits (SPRITES,
- VP_HIDE and genlock). This bug caused pictures with the VP_HIDE bit
- set not to be displayed at all!
- It is now safe to put the result of GetViewModes() directly to the
- NewScreen.ViewModes field, as it was supposed to.
- Note that GetViewModes() now returns the full 32 bit CAMG entry, so
- the prototype for GetViewModes() has changed from UWORD to ULONG.
- The upper 16 bits of the view modes are reserved for future use by CBM.
-
- * GetColorTab() now correctly masks out the lower 4 bits of the color
- bytes (These bits are used by some converted Sun rasterfiles).
-
- * The DecodePic() decruncher is more robust, it does not write past the
- end of the bitmap anymore (remember those nasty 81000007/9 gurus?)
- If you have pictures which can't be displayed, PLEASE let me know!
-
- * The library base format has changed. Since this structure was never
- documented, this should not cause any compatibility problems. It is
- very likely that this structure changes from release to release, so
- don't use it!
-
- * The name for IffError() in the Assembler include file has changed to
- IFFError() (IFF in caps) to be compatible with the C names. This
- requires a global search-and-replace operation on your asm source
- files.
-
- * The ShowIFF.c example program has been debugged. It should now handle
- Overscan pictures correctly (in V16.4, it sometimes switched to
- scrolling-mode if the picture was 480 rows high).
- The file scanner is no longer recursive, it uses ARP's 'ALL' features.
- ShowIFF now always returns the memory it allocates.
-
- * There is a new example program 'AnimExample.c'. It loads and displays
- a DPaint animation, the user can set the speed and number of loops.
- This example shows how to use the new ModifyFrame() routine.
-
-
- CHANGES FOR V17.x
- -----------------
-
- This version never existed (the IFFLIB17.ZOO release contained iff.lib 16.4).
- To avoid confusion, the new version number is now 18.
-
-
- CHANGES FOR V16.4 (16-May-89)
- -----------------
-
- * The ShowIFF.c example program was completely rewritten. It now uses the
- ARP library for command line parsing and directory searching. A powerful
- WorkBench handler has been added which lets you display the pictures in
- a drawer or an entire disk by selecting the drawer or disk icon and acti-
- vating the ShowIFF icon with extended selection.
- If a picture is larger than the screen, you can use the mouse to scroll
- the screen. (I have some scanned pictures with a resolution of
- 2048x2048 pixels, which can be displayed with 1MB chip ram!)
-
- * The Play8SVX demo has been added. It plays sampled sounds from CLI and
- WorkBench.
-
- * Internal changes to the library code (I now use the DevPac assembler V2
- by HiSoft instead of the Manx 3.6 assembler)
-
-
- CHANGES FOR V16.3 (18-Mar-89)
- -----------------
-
- * The BMHD property chunks can now be in any order (which worked for V16.1,
- but was broken in 16.2).
-
-
- CHANGES FOR V16.2 (03-Mar-89)
- -----------------
-
- * The SaveBitMap/SaveClip() routines sometimes generated a wrong CAMG chunk.
- This is fixed now.
-
- * There are no more decruncher overruns corrupting the memory list
-
-
- CHANGES FOR V16.1 (01-Dec-88)
- -----------------
-
- Since V15.3 I got lots of suggestions, so I made the following changes.
- Note that this version is fully downward-compatible to V15.3.
-
- * There was a bug in the DecodePic() routine which called the guru if the
- width of the picture was not a multiple of 16. It's fixed now.
-
- * The GetViewModes() routines now calculates the viewmodes correctly for
- all picture sizes, including Super-Overscan (produced by DigiView 3.0).
-
- * When you open an IFF file with the OpenIFF() call, memory is allocated
- and the file is read into that memory. Normally, all files are loaded
- into whatever memory is available, but '8SVX' files are always loaded to
- CHIP memory (the memory which is accessable by the Amiga's custom chips).
- This solution is good for playing IFF sounds, but it is not satisfactory
- for some other applications. The solution of this problem is quite easy:
- I added a new routine called 'NewOpenIFF', which allows you to specify
- the type of memory for the file.
- So if you want to load an IFF instrument into any RAM, the right command
- is: 'f=NewOpenIFF(filename,0L)' or 'f=OpenIFF(filename,MEMF_PUBLIC)'.
- You can use any memory attributes you want (PUBLIC,CHIP,FAST...).
-
- * The file 'iff.h' is now split into two files: 'iff.h', which contains the
- structure definitions and function declarations, and 'IffGlue.asm',
- which contains the C to Assembler interface routines. These routines are
- needed for the Manx C compilere V3.6.
-
- * The file 'IFFPragmas.h" is added to support the Lattice C compiler. It
- was taken from an usenet article by Lyle E. Levine. (Thanks!)
-
- * The demo file 'ShowIFF.c' now correctly handles overscan pictures.
-
-
- -- [more boring version info deleted] --
-
-
- CHANGES FOR V1.0 (14-Dec-87)
- ----------------
-
- * iff.library was born!
-
-