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+header size
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@rjoberon
rjoberon committed Apr 22, 2024
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Showing 1 changed file with 12 additions and 12 deletions.
24 changes: 12 additions & 12 deletions _posts/2024-04-20-understanding-the-image-header.markdown
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Expand Up @@ -58,16 +58,16 @@ likely stored as 32 bit unsigned integer.
Thus, the structure of the first 20 bytes of the (60 byte?) header
seems to be as follows:

| Name | Size | Value | Comment |
|----------------------------+---------+--------+----------------------|
| file header / magic number | 4 bytes | "CIS3" | |
| | 1 byte | "." | part of file header? |
| unknown | 3 byte | | |
| constant 60? | 2 bytes | 60 | |
| data size | 4 bytes | | file size - 60 |
| unknown | 1 byte | 0x00 | always zero? |
| unknown | 1 byte | | |
| image width | 2 byte | | |
| image height | 2 byte | | |
| Name | Size | Value | Comment |
|----------------------------+---------+----------+--------------------------------------|
| file header / magic number | 4 bytes | "CIS3" | |
| | 1 byte | "." | part of file header? |
| unknown | 3 byte | | |
| header size | 2 bytes | 56 or 60 | greyscale: 56 bytes, color: 60 bytes |
| data size | 4 bytes | | file size - header size |
| unknown | 1 byte | 0x00 | always zero? |
| unknown | 1 byte | | |
| image width | 2 byte | | |
| image height | 2 byte | | |

to be continued
(to be continued)

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