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#include <stdio.h>
#include <unistd.h>
#include "cdl.h"
/* MOSAIC -- Example task to demostrate a possible mosaic display
* application. Image names may optionally be drawn on each tile of
* the mosaic by specifying the -label and -color flags. The -pad flag
* can be used to put a space between images, -sample is used to sub-
* sample an image before display. Assumes all images are the same size.
*
* Examples:
* To display four images with a gap in a 1600x1600 frame buffer
* % mosaic -nx 2 -ny 2 -fbconfig 4 -pad 20 foo[1234].imh
* To display a set of images, subsampling each by 4 pixels
* % mosaic -nx 2 -ny 2 -pad -10 -sample 4 foo[1234].imh
*
* Usage:
* mosaic [-fbconfig N] [-frame N] [-color N] [-label] [-nozscale]
* [-raw -xdim N -ydim N -bitpix N [-hskip N] ]
* [-nx N] [-ny N] [-pad N] [-sample N]image1 image2 .....
*/
#define ABS(x) (x > 0 ? x : -x)
main (argc, argv)
int argc;
char **argv;
{
CDLPtr cdl;
char *fname = NULL, title[128];
int i, j, k, status=0, label=0, frame=1, fb=FB_AUTO, zscale=1;
int sample=1, pad=0, col=204, imx=0, imy=0, nimages, nim;
int ii, xinit, rowx, rowy, nnx, nny, fb_w, fb_h, nf, mx, my;
int raw = 0, bitpix=0, hskip=0;
int nx = 1, ny = 1;
float z1, z2;
unsigned char *pix = NULL;
/* Process the command line options. */
if (argc > 1) {
for (i=1; i < argc; i++) {
if (strncmp (argv[i], "-fbconfig",3) == 0)
fb = atoi (argv[++i]);
else if (strncmp (argv[i], "-frame",3) == 0)
frame = atoi (argv[++i]);
else if (strncmp (argv[i], "-color",3) == 0)
col = atoi (argv[++i]);
else if (strncmp (argv[i], "-label",4) == 0)
label = 1;
else if (strncmp (argv[i], "-nozscale",4) == 0)
zscale = 0;
else if (strncmp (argv[i], "-nx",3) == 0)
nx = atoi (argv[++i]);
else if (strncmp (argv[i], "-ny",3) == 0)
ny = atoi (argv[++i]);
else if (strncmp (argv[i], "-pad",4) == 0)
pad = atoi (argv[++i]);
else if (strncmp (argv[i], "-raw",4) == 0)
raw++;
else if (strncmp (argv[i], "-xdim",4) == 0)
imx = atoi (argv[++i]);
else if (strncmp (argv[i], "-ydim",4) == 0)
imy = atoi (argv[++i]);
else if (strncmp (argv[i], "-bitpix",4) == 0)
bitpix = atoi (argv[++i]);
else if (strncmp (argv[i], "-hskip",4) == 0)
hskip = atoi (argv[++i]);
else if (strncmp (argv[i], "-sample",4) == 0) {
sample = atoi (argv[++i]);
if (sample % 2) {
fprintf (stderr, "ERROR: Sample size must be even\n");
exit (-1);
}
} else
break;
}
} else {
printf("Usage:\n\tmosaic ");
printf("[-fbconfig N] [-frame N] [-color N] [-label] [-nozscale]");
printf("\n\t[-raw -xdim N -ydim N -bitpix N [-hskip N] ]");
printf("\n\t[-nx N] [-ny N] [-pad N] [-sample N] image1 ....\n");
exit (1);
}
nimages = argc - i;
/* Open the package and a connection to the server. */
if (!(cdl = cdl_open ((char *)getenv("IMTDEV"))) )
exit (-1);
/* Clear the frame to begin. */
(void) cdl_clearFrame (cdl);
/* Loop over each of the images in the list. */
nim = 0;
rowx = rowy = 0;
nnx = nny = 0;
for (k=0; k < ny && nim < nimages; k++) {
rowy += nny + pad;
for (rowx = xinit, j=0; j < nx && nim < nimages; j++) {
/* Get the image name for display. */
fname = argv[i++];
/* Figure out what kind of image it is and get the pixels. */
if (!raw && cdl_isIRAF (fname))
status = cdl_readIRAF (fname, 1, &pix, &imx, &imy, &bitpix,
title);
else if (!raw && cdl_isFITS (fname))
status = cdl_readFITS (fname, &pix, &imx, &imy, &bitpix,
title);
else {
if (raw) {
/* It's a raw data array, be sure we have everyting
* we need in order to read it.
*/
if (imx == 0 || imy == 0 || bitpix == 0) {
fprintf(stderr, "ERROR: Use of '-raw' requires ");
fprintf(stderr, "'-xdim', '-ydim' and '-bitpix'\n");
status = 1;
} else {
FILE *fd;
/* Open the image file if we can. */
if (fd = fopen (fname, "r")) {
/* Seek to the offset specified. */
lseek (fileno(fd), (off_t) hskip, SEEK_SET);
/* Allocate the pixel pointer and read data. */
pix = (pix ? pix : (uchar *) malloc (
imx*imy*(ABS(bitpix) / 8)) );
fread (pix, ABS(bitpix)/8, imx*imy, fd);
fclose (fd);
} else
status = 1;
}
} else {
/* Didn't set the raw flag, and we don't know what
* it is....punt.
*/
if (access (fname, F_OK) == 0)
fprintf (stderr, "'%s': unknown image format.\n",
fname);
else
fprintf (stderr, "'%s': image doesn't exist.\n", fname);
status = 1;
}
}
if (status) goto err_;
/* Compute subsampled image size. */
if (sample > 1)
nnx = imx / sample, nny = imy / sample;
else
nnx = imx, nny = imy;
/* Unless we asked for a specific FB size find one large enough
* to handle the mosaic. We don't check to be sure what's
* returned is really large enough.
*/
if (nim == 0 && fb == FB_AUTO) {
cdl_selectFB (cdl, nx*nnx+(pad*(nx-1)), ny*nny+(pad*(ny-1)),
&fb, &fb_w, &fb_h, &nf, 1);
} else {
cdl_setFBConfig (cdl, fb);
cdl_lookupFBSize (cdl, fb, &fb_w, &fb_h, &nf);
}
/* Define a WCS for the frame. */
cdl_setWCS (cdl, "image mosaic", "", 1., 0., 0., -1., 0.,
(float) ny*imy+(pad*(ny+1)), 1., 255., 1);
/* The first time through figure out the placement so the
* entire mosaic is centered in the frame.
*/
if (nim == 0) {
mx = (nx * nnx) + pad * (nx-1);
my = (ny * nny) + pad * (ny-1);
rowy = (fb_h - my) / 2;
xinit = rowx = (fb_w - mx) / 2;
}
/* Compute the zscaled imaged pixels. */
if (zscale) {
cdl_computeZscale (cdl, pix, imx ,imy, bitpix, &z1, &z2);
printf ("%s: z1=%g z2=%g\n", fname, z1, z2);
cdl_zscaleImage (cdl, &pix, imx ,imy, bitpix, z1, z2);
}
/* Subsample the image if requested. */
if (sample > 1) {
int l, m, n;
for (l=0, n=0; l < imy; l+=sample)
for (m=0; m < imx; m+=sample)
pix[n++] = pix[(l*imx)+m];
}
/* Write the image to the frame buffer. */
if (cdl_writeSubRaster (cdl, rowx, rowy, nnx, nny, pix))
goto err_;
/* Draw the image name as a label. */
if (label)
cdl_markText (cdl, rowx+10, rowy+10, fname, 1., 0., col);
nim++;
rowx += nnx + pad;
}
}
/* Close the package and clean up. */
err_: cdl_close (cdl);
free ( (char *) pix);
exit (status);
}
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