This directory contains sources for programs to read RLE files and display them on various sorts of displays. Since most sites will not have all the different displays, or we may not have written a "get" program for your favorite display, this file contains a few words on rolling your own. The simplest way to write a "get" program for your display device is to use rle_getrow to read successive scanlines, and send them to the display using a "pixel put" routine. If you need to dither the pixel values, you can steal the dithering code from getX11.c (or tools/to8.c, but that code is not as general). Be sure to be careful about files with other than straight RGB images. If your display supports 24 bits of color, and can be written to one channel at a time, you can use the raw interface and interpret the opcodes directly into operations on your display. Some output buffering usually helps to make this fast. The program 'gmr27/getfb' uses this philosophy, but it reads the RLE file directly (it precedes the 'raw' interface). If you do write a program for a display device that is not supported in this distribution, please send it to us, so we can add it to the distribution, and others will not have to duplicate your hard work. Similarly, if you are thinking of writing a display driver, you might send us a note and see if anyone else has already done one. Spencer W. Thomas Rod G. Bogart University of Michigan July, 1990 spencer@eecs.umich.edu rgb@caen.engin.umich.edu
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.
