Initial revision
diff --git a/Modules/imgfile.c b/Modules/imgfile.c
new file mode 100644
index 0000000..4c452d6
--- /dev/null
+++ b/Modules/imgfile.c
@@ -0,0 +1,160 @@
+/***********************************************************
+Copyright 1991 by Stichting Mathematisch Centrum, Amsterdam, The
+Netherlands.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the names of Stichting Mathematisch
+Centrum or CWI not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior permission.
+
+STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
+THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
+FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
+OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+******************************************************************/
+
+/* IMGFILE module - Interface to sgi libimg */
+
+/*XXXX This modele should be done better at some point. It should return
+** an object of image file class, and have routines to manipulate these
+** image files in a neater way (so you can get rgb images off a greyscale
+** file, for instance, or do a straight display without having to get the
+** image bits into python, etc).
+*/
+
+#include "allobjects.h"
+#include "modsupport.h"
+
+#include <gl/image.h>
+
+/* #include "sigtype.h" */
+
+static object * ImgfileError;
+
+static char gfname[1024];
+static IMAGE *image;
+
+
+static
+imgfile_open(args)
+ object *args;
+{
+ char *fname;
+
+ if ( !getargs(args, "s", &fname) )
+ return 0;
+ if ( image != NULL && strcmp(fname, gfname) != 0 ) {
+ iclose(image);
+ image = NULL;
+ gfname[0] = '\0';
+ }
+ if ( (image=iopen(fname, "r")) == NULL ) {
+ err_setstr(ImgfileError, "Cannot open image file");
+ return 0;
+ }
+ strcpy(gfname, fname);
+ return 1;
+}
+
+static object *
+imgfile_read(self, args)
+ object *self;
+ object *args;
+{
+ char *fname;
+ object *rv;
+ int xsize, ysize, zsize;
+ char *cdatap;
+ long *idatap;
+ static short rs[8192], gs[8192], bs[8192];
+ int x, y;
+
+ if ( !imgfile_open(args) )
+ return NULL;
+
+ if ( image->colormap != CM_NORMAL ) {
+ err_setstr(ImgfileError, "Can only handle CM_NORMAL images");
+ return NULL;
+ }
+ if ( BPP(image->type) != 1 ) {
+ err_setstr(ImgfileError, "Cannot handle imgfiles with bpp!=1");
+ return NULL;
+ }
+ xsize = image->xsize;
+ ysize = image->ysize;
+ zsize = image->zsize;
+ if ( zsize != 1 && zsize != 3) {
+ err_setstr(ImgfileError, "Can only handle 1 or 3 byte pixels");
+ return NULL;
+ }
+
+ if ( zsize == 3 ) zsize = 4;
+ rv = newsizedstringobject(NULL, xsize*ysize*zsize);
+ if ( rv == NULL )
+ return NULL;
+ cdatap = getstringvalue(rv);
+ idatap = (long *)cdatap;
+ for ( y=0; y < ysize; y++ ) {
+ if ( zsize == 1 ) {
+ getrow(image, rs, y, 0);
+ for(x=0; x<xsize; x++ )
+ *cdatap++ = rs[x];
+ } else {
+ getrow(image, rs, y, 0);
+ getrow(image, gs, y, 1);
+ getrow(image, bs, y, 2);
+ for(x=0; x<xsize; x++ )
+ *idatap++ = (rs[x] & 0xff) |
+ ((gs[x] & 0xff)<<8) |
+ ((bs[x] & 0xff)<<16);
+ }
+ }
+ return rv;
+}
+
+static object *
+imgfile_getsizes(self, args)
+ object *self;
+ object *args;
+{
+ char *fname;
+ object *rv;
+
+ if ( !imgfile_open(args) )
+ return NULL;
+ rv = newtupleobject(3);
+ if ( rv == NULL )
+ return NULL;
+ settupleitem(rv, 0, newintobject(image->xsize));
+ settupleitem(rv, 1, newintobject(image->ysize));
+ settupleitem(rv, 2, newintobject(image->zsize));
+ return rv;
+}
+
+
+static struct methodlist imgfile_methods[] = {
+ { "getsizes", imgfile_getsizes },
+ { "read", imgfile_read },
+ { 0, 0 }
+};
+
+
+void
+initimgfile()
+{
+ object *m, *d;
+ m = initmodule("imgfile", imgfile_methods);
+ d = getmoduledict(m);
+ ImgfileError = newstringobject("imgfile.error");
+ if ( ImgfileError == NULL || dictinsert(d,"error",ImgfileError) )
+ fatal("can't define imgfile.error");
+}