
                        picture.datatype V43
                          Copyright 1995-99
                           Ralph Schmidt
           Additional libs/tools/changes by F.Mariak/M.Scheler
  	       Sub datatype classes by Matthias Scheler


This  version is a freely available picture.datatype that MUST ONLY be used
with  a  licenced  CyberGraphX(TM)  software  package  when using non 8 bit
screenmodes.
You aren't allowed to use this software with any non licenced CyberGraphX(TM)
"emulation"  in these modes.
Usage of any of the included sub datatype classes with picture.datatype v43
clones needs permission from their respective authors.

THE DATE EXPIRATION CODE HAS BEEN REMOVED. IT DOES NOT EXPIRE AFTER 4MONTH
ANYMORE.

cyberncg.library support for non CyberGraphX machines has been dropped.

******************************************************************************

Reporting bugs:

If   you   find   any   bugs   in   this  software,  please  send  them  to
cybergfx.dtbugs@vgr.com.   Since  this  software is unsupported, we make no
guarantees  about  how  long  it will take to fix the bug, or if it will be
fixed  at  all.   Bug fixes will be cheerfully accepted.  Please include as
much detailed information as possible, including:

	1) the version numbers of the related libraries/datatypes you are
	   using
	2) the data file that caused the bug (if its not too big)
	3) the OS version and machine type you ran the program on

You can find a HTML bug report form at http://www.vgr.com/v43dtbugform.html.
This is automatically forwarded to the respective authors.
Also, check out http://www.vgr.com/v43dt for general information on the v43
picture.datatype

******************************************************************************

#########################
#                       #
#Important Informations #
#                       #
#########################

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
IF YOU'RE USING THE APPS THAT ARE IN THE COMPATIBILITY LIST( CHECK OUT SOME
LINES  BELOW)  YOU  HAVE  TO NAME YOUR APPLICATION EXACTLY LIKE IN THE LIST
OTHERWISE WON'T RECOGNIZE IT.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

The  Aminet  release  of the png.datatype supports the V43 picture.datatype
but  because  of  a  late change to the API(DTA_ErrorLevel,DTA_ErrorNumber)
these  don't  support  these  tags.   I  hope  that  the authors of these 2
datatype update their datatypes in the next time.
 The  tags  are VERY important in a low memory situation.

 Several V43  compatible datatypes have been released so far. Please check
Aminet util/dtype for the latest files.


Problems

o PPaint doesn't load 24bit images. Well..PPaint checks the BMHD.depth of
  the raw data for >8...too bad

o Picview outputs "not a standard bitmap or something like that". This
  is caused by the cgfx "PLANESTOFAST" option.

The following functions aren't implemented yet.

o 24bit dithering to a very small depth planar bitmap may cause
  "problems". No time to test this out.
o Sorry...also no time(lazyness) to test out PixMap support. I hope
  it works as defined.
o Right now it also doesn't really care for Ham6/8 and Halfbright.
o Make a Gauge interface so it may be controlled by tags(but does that
  really make sense ? imagine a gauge popping up when iprefs is loading
  your background)
o scrollable transparent picture handling should be improved.
  Now it only switches back in nonmask mode.
o ******* AMosaic crashes ******* in 16Bit mode...i don't know why
  yet(it worked in that mode in summer of 95 ......).


############################################################################


The jfif.datatype is using the "jpeg.codec"

The JPEG codec is Copyright  1994 Christoph Feck, TowerSystems.
All Rights Reserved.  It is based in part on the work of the
Independent JPEG Group.

############################################################################




****************************************************************************

ATTENTION:

IF YOU ARE USING CYBERGRAPHX V2 YOU NEED TO HAVE AT LEAST VERSION 40.66 OF
CYBERGRAPHICS.LIBRARY INSTALLED TO  USE THIS RELEASE OF PICTURE.DATATYPE V43
IN CONJUNCTION WITH A GRAPHICS CARD !

****************************************************************************

Release Notes 43.764
====================

picture.datatype 43.764

 o modified DTM_PRINT/truecolour support for original printer.device. Since it
   only supports 4 bits/gun, it uses a 4/4/4 bits/gun color reduction scheme
   instead of 4/5/3 bits/gun now.

PCDT Prefs 43.6

 o pressing the closewindow gadget now properly shuts down the PCDT process
   and does not require an additional CTRL_C break anymore

Release Notes 43.763
====================

picture.datatype 43.763

 o added truecolour support for DTM_PRINT. If you are using the original
   printer.device it's a btn (better than nothing) implementation really,
   since the device only supports up to 4096 colours. The truecolour image
   is then reduced to 12 bits planar, using 4 bits/gun for red, 5 bits/gun
   for green and 3 bits/gun for the blue channel.
   Optionally, a 24bit direct print mode using IrseeSoft's TurboPrint API is
   implemented. It requires at least TurboPrint3 to work.

PCDT Prefs 43.6

 o pressing the closewindow gadget now properly shuts down the PCDT process
   and does not require an additional CTRL_C break anymore

Release Notes 43.762
====================

picture.datatype 43.762

 o fixed a bug in DTM_WRITE and DTM_COPY methods. If an area was selected
   within a picture object, the datatype always stored the complete object.
   Now it properly stores the selected area only.

Release Notes 43.761
====================

picture.datatype 43.761

 o recompiled with SAS/C 6.58
 o the picture.datatype now implements the DTM_REMOVEDTOBJECT method to
   release all resources not required anymore

ilbm.datatype 43.10

 o now supports loading of HAM8 pictures for ECS machines.

gif.datatype 43.18

 o This datatype is not included in the aminet release archive due to
   lzw patent problems.
 o supports a missing GIF89 feature now.

Release Notes 43.760
====================

picture.datatype 43.760

 o bumped revision of picture.datatype to 760

PCDT Prefs 43.5

 o a CTRL_C break now correctly removes the user interface, too.

jfif.datatype 43.10

 o modified dispatcher for better support of tools like "DTConvert"

pcx.datatype 43.6

 o modified dispatcher for better support of tools like "DTConvert"

pbm.datatype 43.10

 o descriptors modified to avoid problems with v45 datatypes.library
 o modified dispatcher for better support of tools like "DTConvert"

ilbm.datatype 43.7

 o modified dispatcher for better support of tools like "DTConvert"

gif.datatype 43.17

   This datatype is not included in the aminet release archive due to
   lzw patent problems.
 o modified dispatcher for better support of tools like "DTConvert"


Release Notes 43.759
====================

picture.datatype 43.759

 o added DTM_OBTAINDRAWINFO and DTM_RELEASEDRAWINFO methods. This methods are
   needed for the new v45 datatypes.library. The code of this methods is
   loosely based on work of Roland Mainz (drawablepicdtc patch).
   With the inclusion of this 2 methods, v43 picture.datatype does not
   require the drawablepicdtc patch anymore. (DTM_DRAW was supported before
   already). Both methods are added to the list of supported methods, too.
   Please check out the latest datatypes.library v45 archive by Roland Mainz
   to get information on how this methods are used.
 o added DTM_DRAW to list of supported methods
 o method DTM_DRAW never really worked in previous picture.datatype v43
   releases because the width/height of the object was always calculated
   wrong. Now fixed. 
 

Questions&Bugreports
Don't expect fast response.

http://www.vgr.com/v43dtbugform.html

cybergfx.dtbugs@vgr.com
