text: /*	$Id$ */
  /*
   * Copyright (c) 1990-1996 Sam Leffler
   * Copyright (c) 1991-1996 Silicon Graphics, Inc.
   * HylaFAX is a trademark of Silicon Graphics
   * HylaFAX is a trademark of Silicon Graphics
   *
   * Permission to use, copy, modify, distribute, and sell this software and 
   * its documentation for any purpose is hereby granted without fee, provided
   * that (i) the above copyright notices and this permission notice appear in
   * all copies of the software and related documentation, and (ii) the names of
   * Sam Leffler and Silicon Graphics may not be used in any advertising or
   * publicity relating to the software without the specific, prior written
   * permission of Sam Leffler and Silicon Graphics.
   * 
   * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, 
   * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY 
   * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.  
   * 
   * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
   * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
   * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
   * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF 
   * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE 
   * OF THIS SOFTWARE.
   */
  #ifndef IZOOMDEF
  #define IZOOMDEF
  
  #define IMPULSE         1
  #define BOX             2
  #define TRIANGLE        3
  #define QUADRATIC       4
  #define MITCHELL        5
  
  typedef struct FILTER {
      int n, totw;
      short *dat;
      short *w;
  } FILTER;
  
  typedef struct zoom {
      int (*getfunc)();
      short *abuf;
      short *bbuf;
      int anx, any;
      int bnx, bny;
      short **xmap;
      int type;
      int curay;
      int y;
      FILTER *xfilt, *yfilt;      /* stuff for fitered zoom */
      short *tbuf;
      int nrows, clamp, ay;
      short **filtrows;
      int *accrow;
  } zoom;
  
  zoom *newzoom();
  
  #endif /* IZOOMDEF */
  