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#ifndef lint
static char id[] = "$Id: tif2ras.c,v 1.2.2.1 2010-06-08 18:50:41 bfriesen Exp $";
#endif
/*-
* tif2ras.c - Converts from a Tagged Image File Format image to a Sun Raster.
*
* Copyright (c) 1990 by Sun Microsystems, Inc.
*
* Author: Patrick J. Naughton
* naughton@wind.sun.com
*
* 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.
*
* This file is provided AS IS with no warranties of any kind. The author
* shall have no liability with respect to the infringement of copyrights,
* trade secrets or any patents by this file or any part thereof. In no
* event will the author be liable for any lost revenue or profits or
* other special, indirect and consequential damages.
*
* Comments and additions should be sent to the author:
*
* Patrick J. Naughton
* Sun Microsystems
* 2550 Garcia Ave, MS 14-40
* Mountain View, CA 94043
* (415) 336-1080
*
* Revision History:
* 10-Jan-89: Created.
* 06-Mar-90: Change to byte encoded rasterfiles.
* fix bug in call to ReadScanline().
* fix bug in CVT() macro.
* fix assignment of td, (missing &).
*
* Description:
* This program takes a MicroSoft/Aldus "Tagged Image File Format" image or
* "TIFF" file as input and writes a Sun Rasterfile [see rasterfile(5)]. The
* output file may be standard output, but the input TIFF file must be a real
* file since seek(2) is used.
*/
#include <stdio.h>
#include <pixrect/pixrect_hs.h>
#include "tiffio.h"
typedef int boolean;
#define True (1)
#define False (0)
#define CVT(x) (((x) * 255) / ((1L<<16)-1))
boolean Verbose = False;
char *pname; /* program name (used for error messages) */
void
error(s1, s2)
char *s1,
*s2;
{
fprintf(stderr, s1, pname, s2);
exit(1);
}
void
usage()
{
error("usage: %s -[vq] TIFFfile [rasterfile]\n", NULL);
}
main(argc, argv)
int argc;
char *argv[];
{
char *inf = NULL;
char *outf = NULL;
FILE *fp;
long width,
height;
int depth,
numcolors;
register TIFF *tif;
TIFFDirectory *td;
register u_char *inp,
*outp;
register int col,
i;
register long row;
u_char *Map = NULL;
u_char *buf;
short bitspersample;
short samplesperpixel;
short photometric;
u_short *redcolormap,
*bluecolormap,
*greencolormap;
Pixrect *pix; /* The Sun Pixrect */
colormap_t Colormap; /* The Pixrect Colormap */
u_char red[256],
green[256],
blue[256];
setbuf(stderr, NULL);
pname = argv[0];
while (--argc) {
if ((++argv)[0][0] == '-')
switch (argv[0][1]) {
case 'v':
Verbose = True;
break;
case 'q':
usage();
break;
default:
fprintf(stderr, "%s: illegal option -%c.\n", pname,
argv[0][1]);
exit(1);
}
else if (inf == NULL)
inf = argv[0];
else if (outf == NULL)
outf = argv[0];
else
usage();
}
if (inf == NULL)
error("%s: can't read input file from a stream.\n", NULL);
if (Verbose)
fprintf(stderr, "Reading %s...", inf);
tif = TIFFOpen(inf, "r");
if (tif == NULL)
error("%s: error opening TIFF file %s", inf);
if (Verbose)
TIFFPrintDirectory(tif, stderr, True, False, False);
TIFFGetField(tif, TIFFTAG_BITSPERSAMPLE, &bitspersample);
if (bitspersample > 8)
error("%s: can't handle more than 8-bits per sample\n", NULL);
TIFFGetField(tif, TIFFTAG_SAMPLESPERPIXEL, &samplesperpixel);
switch (samplesperpixel) {
case 1:
if (bitspersample == 1)
depth = 1;
else
depth = 8;
break;
case 3:
case 4:
depth = 24;
break;
default:
error("%s: only handle 1-channel gray scale or 3-channel color\n");
}
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &width);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &height);
if (Verbose)
fprintf(stderr, "%dx%dx%d image, ", width, height, depth);
if (Verbose)
fprintf(stderr, "%d bits/sample, %d samples/pixel, ",
bitspersample, samplesperpixel);
pix = mem_create(width, height, depth);
if (pix == (Pixrect *) NULL)
error("%s: can't allocate memory for output pixrect...\n", NULL);
numcolors = (1 << bitspersample);
TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &photometric);
if (numcolors == 2) {
if (Verbose)
fprintf(stderr, "monochrome ");
Colormap.type = RMT_NONE;
Colormap.length = 0;
Colormap.map[0] = Colormap.map[1] = Colormap.map[2] = NULL;
} else {
switch (photometric) {
case PHOTOMETRIC_MINISBLACK:
if (Verbose)
fprintf(stderr, "%d graylevels (min=black), ", numcolors);
Map = (u_char *) malloc(numcolors * sizeof(u_char));
for (i = 0; i < numcolors; i++)
Map[i] = (255 * i) / numcolors;
Colormap.type = RMT_EQUAL_RGB;
Colormap.length = numcolors;
Colormap.map[0] = Colormap.map[1] = Colormap.map[2] = Map;
break;
case PHOTOMETRIC_MINISWHITE:
if (Verbose)
fprintf(stderr, "%d graylevels (min=white), ", numcolors);
Map = (u_char *) malloc(numcolors * sizeof(u_char));
for (i = 0; i < numcolors; i++)
Map[i] = 255 - ((255 * i) / numcolors);
Colormap.type = RMT_EQUAL_RGB;
Colormap.length = numcolors;
Colormap.map[0] = Colormap.map[1] = Colormap.map[2] = Map;
break;
case PHOTOMETRIC_RGB:
if (Verbose)
fprintf(stderr, "truecolor ");
Colormap.type = RMT_NONE;
Colormap.length = 0;
Colormap.map[0] = Colormap.map[1] = Colormap.map[2] = NULL;
break;
case PHOTOMETRIC_PALETTE:
if (Verbose)
fprintf(stderr, "colormapped ");
Colormap.type = RMT_EQUAL_RGB;
Colormap.length = numcolors;
memset(red, 0, sizeof(red));
memset(green, 0, sizeof(green));
memset(blue, 0, sizeof(blue));
TIFFGetField(tif, TIFFTAG_COLORMAP,
&redcolormap, &greencolormap, &bluecolormap);
for (i = 0; i < numcolors; i++) {
red[i] = (u_char) CVT(redcolormap[i]);
green[i] = (u_char) CVT(greencolormap[i]);
blue[i] = (u_char) CVT(bluecolormap[i]);
}
Colormap.map[0] = red;
Colormap.map[1] = green;
Colormap.map[2] = blue;
break;
case PHOTOMETRIC_MASK:
error("%s: Don't know how to handle PHOTOMETRIC_MASK\n");
break;
case PHOTOMETRIC_DEPTH:
error("%s: Don't know how to handle PHOTOMETRIC_DEPTH\n");
break;
default:
error("%s: unknown photometric (cmap): %d\n", photometric);
}
}
buf = (u_char *) malloc(TIFFScanlineSize(tif));
if (buf == NULL)
error("%s: can't allocate memory for scanline buffer...\n", NULL);
for (row = 0; row < height; row++) {
if (TIFFReadScanline(tif, buf, row, 0) < 0)
error("%s: bad data read on line: %d\n", row);
inp = buf;
outp = (u_char *) mprd_addr(mpr_d(pix), 0, row);
switch (photometric) {
case PHOTOMETRIC_RGB:
if (samplesperpixel == 4)
for (col = 0; col < width; col++) {
*outp++ = *inp++; /* Blue */
*outp++ = *inp++; /* Green */
*outp++ = *inp++; /* Red */
inp++; /* skip alpha channel */
}
else
for (col = 0; col < width; col++) {
*outp++ = *inp++; /* Blue */
*outp++ = *inp++; /* Green */
*outp++ = *inp++; /* Red */
}
break;
case PHOTOMETRIC_MINISWHITE:
case PHOTOMETRIC_MINISBLACK:
switch (bitspersample) {
case 1:
for (col = 0; col < ((width + 7) / 8); col++)
*outp++ = *inp++;
break;
case 2:
for (col = 0; col < ((width + 3) / 4); col++) {
*outp++ = (*inp >> 6) & 3;
*outp++ = (*inp >> 4) & 3;
*outp++ = (*inp >> 2) & 3;
*outp++ = *inp++ & 3;
}
break;
case 4:
for (col = 0; col < width / 2; col++) {
*outp++ = *inp >> 4;
*outp++ = *inp++ & 0xf;
}
break;
case 8:
for (col = 0; col < width; col++)
*outp++ = *inp++;
break;
default:
error("%s: bad bits/sample: %d\n", bitspersample);
}
break;
case PHOTOMETRIC_PALETTE:
memcpy(outp, inp, width);
break;
default:
error("%s: unknown photometric (write): %d\n", photometric);
}
}
free((char *) buf);
if (Verbose)
fprintf(stderr, "done.\n");
if (outf == NULL || strcmp(outf, "Standard Output") == 0) {
outf = "Standard Output";
fp = stdout;
} else {
if (!(fp = fopen(outf, "w")))
error("%s: %s couldn't be opened for writing.\n", outf);
}
if (Verbose)
fprintf(stderr, "Writing rasterfile in %s...", outf);
if (pr_dump(pix, fp, &Colormap, RT_BYTE_ENCODED, 0) == PIX_ERR)
error("%s: error writing Sun Rasterfile: %s\n", outf);
if (Verbose)
fprintf(stderr, "done.\n");
pr_destroy(pix);
if (fp != stdout)
fclose(fp);
exit(0);
}
/*
* Local Variables:
* mode: c
* c-basic-offset: 8
* fill-column: 78
* End:
*/
|
