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cc-devel - [cc-devel] XMP Embedding in TIFF, Bug?

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  • From: Jason Kivlighn <jkivlighn AT gmail.com>
  • To: Hubert Figuiere <hub AT figuiere.net>, CC Developer Mailing List <cc-devel AT lists.ibiblio.org>
  • Subject: [cc-devel] XMP Embedding in TIFF, Bug?
  • Date: Thu, 14 Jun 2007 16:06:29 -0700

Hi Hubert,

I seem to have come across a bug in Adobe's code for embedding XMP in
the TIFF format. The spec[1] says that the XMLPacket tag has type BYTE,
but Adobe assigns a type of UNDEFINED. libtiff complains and is unable
to read the XMP when given the wrong type.

In TIFF_Handler.cpp, changing

this->tiffMgr.SetTag ( kTIFF_PrimaryIFD, kTIFF_XMP, kTIFF_UndefinedType,
this->xmpPacket.size(), this->xmpPacket.c_str() );

to

this->tiffMgr.SetTag ( kTIFF_PrimaryIFD, kTIFF_XMP, kTIFF_ByteType,
this->xmpPacket.size(), this->xmpPacket.c_str() );

solves the problems I'm having.

This should be passed on to Adobe. Do you know who to contact to get
this fixed?

Cheers,
Jason

[1] http://www.awaresystems.be/imaging/tiff/tifftags/xmp.html





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