X Image Extension

  • XIElib Sample Clients
  • Xieperf man page
  • XIElib Programming Book
  • XIElib Magazine Articles
  • XIEGen Visual Programmer


    XIElib Sample Clients

    Over 40 sample clients for XIElib are now available for you to learn from and modify! These are the same samples included on the CD supplied with my XIElib programming book, but with bug fixes applied.

    The current release was made August 16, 1998. A number of crash bugs detected when porting to RedHat 5.1 Linux are fixed in this release. In addition, changes were made to the photoflo backend code (lib/backend.c) to support 16bpp TrueColor and StaticColor visuals.

    As features are added and additional bugs are found and fixed, I will make them available here. So check back here every few months for updates.

    If you are running XFree86 (on Linux, for example) and xdpyinfo does not report XIE as an extension, or my clients, when run, report "XIE not found!" or similar, then you probably need to tell XFree86 to load XIE, which in XFree86 is an external module. Click here to learn how to do this.


    Xieperf man page

    Click here for an online man page.


    XIElib Programming Book

    For information on Prentice Hall's book about XIElib programming, click here.

    Or, visit Amazon books now and order online by clicking here.

    Note, the listing of Amazon Books here does not imply an endorsement by me or Prentice Hall. I just put this link here as a convenience.

    Click here to read the preface.

    Click here to view the errata sheet for the first edition. Last updated May, 1998.

    A consise review of the book was published in the Usenix publication ;login: in June, 1998. Click here to read it (requires password).


    XIElib Magazine Articles

    The following are magazine articles I've written which discuss XIE or XIElib programming.

    1. XIE: The New X Image Extension, Unix Review, August 1994
    2. Imaging in X11, The X Journal, July-August 1996
    3. XIE Architectural Overview, The X Journal, September-October 1996
    4. Creating, Populating, and Executing XIE Photoflos, The X Journal, November-December 1996
    5. Handling Image Encodings and File Formats, UNIX Developer, January-February 1997
    6. Developing Imaging Applications with XIElib Linux Journal

    Sample source code for the Linux Journal article is included with my other XIElib sample source code in the directory xiesamples/emp.

  • SIGS Publishing
    http://www.sigs.com
  • Unix Review
    http://www.unixreview.com
  • Linux Journal
    http://www.ssc.com/lj


    XIEGen Visual Programmer

    Using a drag-and-drop user interface, the user can construct photoflos by dragging import, process, and export elements from a palette and dropping them onto the canvas. Connections between elements are easily made by clicking the mouse on the elements to be connected and then selecting a menu item. Technique parameters can be specified by selecting an element and bringing up a dialog that prompts for the relevant data. Elements can be moved around on the canvas using the mouse in order to make the photoflo drawing more viewable.

    XIEGen is useful for analyzing photoflos for adherence to the XIE protocol specification, and it provides clear diagnostic output to help the user understand what was found to be wrong during the analysis.



    Once you have designed a "clean" photoflo, XIEGen can be used to execute the photoflo and see the results immediately. This makes XIEGen a powerful photoflo prototyping tool.

    The output of XIEGen is a text file that contains a description of the architecture and its attributes, written in a simple language that was specifically designed for XIEGen. XIEGen is capable of reading a file that adheres to the grammar of this language, prepared by the user in an editor such as vi or emacs, and displaying it graphically or executing the photoflo that it represents.

    XIEGen is currently in development. I hope to release it as free software for the Linux community sometime in 2000. At the moment, I am distracted by another book project... Contact me by e-mail if you have questions regarding XIEGen.


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