Calamus Raster Graphic file format: Difference between revisions
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To decompress: Code byte (N) Instructions |
To decompress: Code byte (N) Instructions |
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N <= 127 Emit the next N+1 bytes literally. |
N <= 127 Emit the next N+1 bytes literally. |
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| − | N >= 128 Emit the next byte N |
+ | N >= 128 Emit the next byte N-127 times. |
After decompression, pixels are in left-to-right, top-to-bottom order. The format is |
After decompression, pixels are in left-to-right, top-to-bottom order. The format is |
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8 pixels per byte, most significant bit first, white is 0. Rows are padded to the next |
8 pixels per byte, most significant bit first, white is 0. Rows are padded to the next |
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byte boundary. |
byte boundary. |
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| + | |||
| + | Additional information: |
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| + | After the compressed data is 2 extra bytes. The purpose of these extra bytes is |
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| + | unknown. They can be safely ignored. Values encountered: |
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| + | $FFFF |
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| + | $0D0A (EC-Paint always writes this value) |
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</pre> |
</pre> |
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Back to [[ST Picture Formats]] |
Back to [[ST Picture Formats]] |
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Latest revision as of 02:57, 31 January 2017
Back to ST Picture Formats