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December 2004
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2004.12.08 02:51 "Re: Q: writing tiled TIFFs", by Bob Friesenhahn
> is there a simple tutorial for writing tiled TIFFs? i've > looked at the sample apps, but i'm not quite sure what all is going on in > there. you C guys sure do hate whitespace and passing parameters where a > global variable will suffice! > > the Tile Oriented TIFF I/O notes > (http://www.remotesensing.org/libtiff/libtiff.html#Tiles) only covers > the "I" part of "I/O". I don't know about a tutorial, but feel free to check out how GraphicsMagick does it. You can view the source file on-line at "http://cvs.graphicsmagick.org/cgi-bin/cvsweb.cgi/GraphicsMagick/coders/tiff.c". Unfortunately, I must admit that the 'O' part of this code does not actually get executed at the moment since a flag is not being set. It is part of the Pyramid TIFF support. Re-enabling the code is on my list of things to do. In particular, look at the TIFFWritePixels() function. Bob ====================================== Bob Friesenhahn bfriesen@simple.dallas.tx.us http://www.simplesystems.org/users/bfriesen