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Rag-D file format - Revision history
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--------------------------<br />
*- Rag - D Picture File -*<br />
--------------------------<br />
<br />
Header :<br />
<br />
Name of Part -|- Length in Bytes -|- Kind of Data -|- Function<br />
--------------+--------------------+-----------------+-------------------------<br />
Identify | 6 Bytes | Ascii | Header. MUST be "RAG-D!"<br />
--------------+--------------------+-----------------+-------------------------<br />
PackAlgo | 2 Bytes | 1 Word | used Pack-Algorithm<br />
--------------+--------------------+-----------------+ 0 = unpacked.<br />
.. | rest not used till yet<br />
--------------+--------------------+-----------------+-------------------------<br />
PicLength | 4 Bytes | 1 Long unsigned | IMPORTANT !!! <br />
.. | | | READ APPENDIX A !! <br />
--------------+--------------------+-----------------+-------------------------<br />
PicColums | 2 Bytes | 1 Word unsigned | X - Size of the picture<br />
.. | | | eg. 320,640 aso, is<br />
.. | | | always dividable by 16!<br />
--------------+--------------------+-----------------+-------------------------<br />
PicRows | 2 Bytes | 1 Word unsigned | Y - Size of the picture<br />
.. | | | eg. 200,240,480 aso.<br />
--------------+--------------------+-----------------+-------------------------<br />
Planes | 2 Bytes | 1 Word unsigned | Number of Bitplains<br />
.. | | | eg. 1,2,4,8,16 aso<br />
--------------+--------------------+-----------------+-------------------------<br />
PalLength | 4 Bytes | 1 Long unsigned | Length of Palette Data<br />
.. | | | eg. 1024 or 32<br />
--------------+--------------------+-----------------+-------------------------<br />
Contrl_One | 2 Bytes | 1 Word unsigned | Control Bits |76543210|<br />
--------------+--------------------+-----------------+ Bit 0 = 1 --> there is<br />
.. | a 370 Bytes long picture<br />
.. | documentation after the<br />
.. | picture - data<br />
.. | Bit 1 = 1 --> there is<br />
.. | a 8 Bytes long info <br />
.. | with date of creation<br />
.. | and working-time behind<br />
.. | the pic-data (and docu-<br />
.. | mentation if exist )<br />
--------------+--------------------+-----------------+-------------------------<br />
Contrl_Two | 2 Bytes | 1 Word unsigned | -unused-<br />
--------------+--------------------+-----------------+-------------------------<br />
Contrl_Three | 2 Bytes | 1 Word unsigned | -unused-<br />
--------------+--------------------+-----------------+-------------------------<br />
Contrl_Four | 2 Bytes | 1 Word unsigned | -unused-<br />
--------------+--------------------+-----------------+-------------------------<br />
PaletteData | PalLength Bytes | Words or Longs | when Length is = 32 you<br />
--------------+--------------------+-----------------| the ST - Hardware-Format<br />
.. | have been used and if <br />
.. | PalLength= 1024 the F030<br />
.. | Hardware- Registers have<br />
.. | been saved. Just copy <br />
.. | into the registers. <br />
.. | If the picture is a True<br />
.. | Color 16 bit Picture,<br />
.. | here follows a palette<br />
.. | with : <0>,<R>,<G>,<B><br />
.. | from 0-255 (not 0-31!)<br />
--------------+--------------------+-----------------+-------------------------<br />
PicData | see Appendix A ! | X - Bytes | Picture Data as RAW<br />
--------------+--------------------+-----------------+ eg. : Plane 0 Word 0..<br />
.. | Plane 1 Word 0..<br />
.. | or in True color :<br />
.. | pixel 0, pixel 1, aso.<br />
--------------+--------------------+-----------------+-------------------------<br />
PicDokument | 370 Bytes | ASCII | description of picture<br />
.. | eg. Name of painter aso<br />
--------------+--------------------+-----------------+-------------------------<br />
PicDate | 2 Bytes & 1 Word | all unsigned | 1. Byte = Day<br />
--------------+--------------------+-----------------+ 2. Byte = Month<br />
.. | 3. & 4. = Year<br />
--------------+--------------------+-----------------+-------------------------<br />
PicWorkTime | 4 Bytes | Long unsigned | Seconds of Worktime <br />
--------------+--------------------+-----------------+-------------------------<br />
<br />
<br />
APPENDIX A<br />
----------<br />
<br />
To get the correct length of the picture data you should do this:<br />
<br />
for loading :<br />
NewPicLen = PicLength/PicRows*(PicRows+1)<br />
<br />
if you save RAG-D pictures calculate like this :<br />
PicLength = PicColums/8*(PicRows-1)*Bitplains<br />
<br />
else my program wount read your pictures ! ( or loads and crashes ! )<br />
<br />
Don't let the scene die ! +-------------------------+<br />
| for more infos write to |<br />
| Tobias Bonnke |<br />
| Postfach 1171 |<br />
| 72564 Bad Urach |<br />
| Germany / Earth |<br />
+-------------------------+<br />
</pre><br />
Back to [[ST Picture Formats]]</div>
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