MGR bitmap
From Just Solve the File Format Problem
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|formattype=electronic | |formattype=electronic | ||
|subcat=Graphics | |subcat=Graphics | ||
+ | |extensions={{ext|mgr}} | ||
|released=~1984 | |released=~1984 | ||
}} | }} | ||
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'''MGR bitmap''' is an image file format associated with the '''ManaGeR''' (or '''MGR''') windowing system. | '''MGR bitmap''' is an image file format associated with the '''ManaGeR''' (or '''MGR''') windowing system. | ||
− | == | + | == Format == |
− | + | "Old format" files have a 6-byte header, and "modern format" files have an 8-byte header. | |
+ | == Identifiers == | ||
+ | The MGR software does not appear to use any filename extension for this format, but some third-party software uses '''.mgr'''. | ||
+ | |||
+ | == Identification == | ||
Files begin with a two-byte ASCII signature: | Files begin with a two-byte ASCII signature: | ||
{| class="wikitable" | {| class="wikitable" | ||
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== Software == | == Software == | ||
* [http://netpbm.sourceforge.net/ Netpbm]: mgrtopbm, pbmtomgr | * [http://netpbm.sourceforge.net/ Netpbm]: mgrtopbm, pbmtomgr | ||
+ | * [http://www.xnview.com/ XnView] | ||
* [ftp://sunsite.unc.edu/pub/linux/apps/MGR/mgrsrc-0.69.tgz MGR source code] | * [ftp://sunsite.unc.edu/pub/linux/apps/MGR/mgrsrc-0.69.tgz MGR source code] | ||
Revision as of 22:45, 4 September 2013
MGR bitmap is an image file format associated with the ManaGeR (or MGR) windowing system.
Contents |
Format
"Old format" files have a 6-byte header, and "modern format" files have an 8-byte header.
Identifiers
The MGR software does not appear to use any filename extension for this format, but some third-party software uses .mgr.
Identification
Files begin with a two-byte ASCII signature:
Signature | Format |
---|---|
"yz" | modern format, 8-bit aligned |
"yx" | modern format, squeezed |
"xz" | old format, 1-bit, 32-bit aligned |
"zz" | old format, 1-bit, 16-bit aligned |
"zy" | old format, 8-bit, 16-bit aligned |
"xy" | same as "zy"? |
Specifications
- MGR source code → src/libbitblit/bitmap/bitmap.5
Software
- Netpbm: mgrtopbm, pbmtomgr
- XnView
- MGR source code