2011.08.12 13:59 "Re: [Tiff] libtiff still under development?", by Bob Friesenhahn

On Fri, 12 Aug 2011, Weichao Wang wrote:

> Hi all,
>  

Is libtiff still under development? I'm wondering if following functions could be added to the library:

Libtiff is alive and well. It progresses slowly due to part-time volunteers.

TIFFReadBilevelImageDate()
TIFFReadGrayImageDate()
TIFFReadRgbImageDate()
TIFFReadCmykImageDate()

They should all read out uncompressed image data of the whole image. For colour image the data should be aligned in planar format, so that a user can easily get a certain colour component. This way a libtiff user needn't to bother with questions as:

Is the image stripped or tiled?

Is the colour image data in chunky or planar format?

I hope you won't say that I'm too lazy or too greedy......

Probably the best approach is for you to develop these API additions and validate them with many types of TIFF images, including very large ones. Then submit a source patch to add the new APIs to libtiff Bugzilla. Make sure that you develop your patches based on CVS HEAD since that is where new features are added.

Bob
--
Bob Friesenhahn
bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/