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