Miraplacid Forum >> Binary DOM and Text DOM >> Two forms of files in the same document

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Miraplacid Forum >> Binary DOM and Text DOM >> Two forms of files in the same document

Moderator:Cerberus

SteveW
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posted 2013-07-17 13:44:41

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There are two forms of the file, one starts with FFFF and is following by a U16 count of items and then those particular item types. If it doesnt start with FFFF, the U16 count is the first item in the file followed by that number of a different type of item.

e.g.

FFFF....

or

....

I've tried a few variations on BDD files to handle this, but not having much luck.

Can you suggest a possible solution?

XMan
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posted 2013-07-17 13:46:31	Reply -Delete
You may use the same technique we used in TIFF format spec: struct TypeOneItem { ... } struct TypeTwoItem { ... } struct TypeOneDocument { uint16 magic; uint16 counter; TypeOneItem[counter]; AcceptRule magic==0x2a; } struct TypeTwoDocument { uint16 counter; TypeTwoItem[counter]; } [extension="tif,tiff", mime_type="image/tiff"] document TIFF { (TypeOneDocument\|TypeTwoDocument) doc; }

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