Esempio n. 1
0
int
main(int argc, char* argv[])
{
	uint32 rowsperstrip = (uint32) -1;
	TIFF *in, *out;
	uint32 w, h;
	uint16 samplesperpixel;
	uint16 bitspersample;
	uint16 config;
	uint16 photometric;
	uint16* red;
	uint16* green;
	uint16* blue;
	tsize_t rowsize;
	register uint32 row;
	register tsample_t s;
	unsigned char *inbuf, *outbuf;
	char thing[1024];
	int c;
	extern int optind;
	extern char *optarg;

	while ((c = getopt(argc, argv, "c:r:R:G:B:")) != -1)
		switch (c) {
		case 'c':		/* compression scheme */
			if (!processCompressOptions(optarg))
				usage();
			break;
		case 'r':		/* rows/strip */
			rowsperstrip = atoi(optarg);
			break;
		case 'R':
			RED = PCT(atoi(optarg));
			break;
		case 'G':
			GREEN = PCT(atoi(optarg));
			break;
		case 'B':
			BLUE = PCT(atoi(optarg));
			break;
		case '?':
			usage();
			/*NOTREACHED*/
		}
	if (argc - optind < 2)
		usage();
	in = TIFFOpen(argv[optind], "r");
	if (in == NULL)
		return (-1);
	photometric = 0;
	TIFFGetField(in, TIFFTAG_PHOTOMETRIC, &photometric);
	if (photometric != PHOTOMETRIC_RGB && photometric != PHOTOMETRIC_PALETTE ) {
		fprintf(stderr,
	    "%s: Bad photometric; can only handle RGB and Palette images.\n",
		    argv[optind]);
		return (-1);
	}
	TIFFGetField(in, TIFFTAG_SAMPLESPERPIXEL, &samplesperpixel);
	if (samplesperpixel != 1 && samplesperpixel != 3) {
		fprintf(stderr, "%s: Bad samples/pixel %u.\n",
		    argv[optind], samplesperpixel);
		return (-1);
	}
	TIFFGetField(in, TIFFTAG_BITSPERSAMPLE, &bitspersample);
	if (bitspersample != 8) {
		fprintf(stderr,
		    " %s: Sorry, only handle 8-bit samples.\n", argv[optind]);
		return (-1);
	}
	TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &w);
	TIFFGetField(in, TIFFTAG_IMAGELENGTH, &h);
	TIFFGetField(in, TIFFTAG_PLANARCONFIG, &config);

	out = TIFFOpen(argv[optind+1], "w");
	if (out == NULL)
		return (-1);
	TIFFSetField(out, TIFFTAG_IMAGEWIDTH, w);
	TIFFSetField(out, TIFFTAG_IMAGELENGTH, h);
	TIFFSetField(out, TIFFTAG_BITSPERSAMPLE, 8);
	TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 1);
	TIFFSetField(out, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
	cpTags(in, out);
	if (compression != (uint16) -1) {
		TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
		switch (compression) {
		case COMPRESSION_JPEG:
			TIFFSetField(out, TIFFTAG_JPEGQUALITY, quality);
			TIFFSetField(out, TIFFTAG_JPEGCOLORMODE, jpegcolormode);
			break;
		case COMPRESSION_LZW:
		case COMPRESSION_DEFLATE:
			if (predictor != 0)
				TIFFSetField(out, TIFFTAG_PREDICTOR, predictor);
			break;
		}
	}
	TIFFSetField(out, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISBLACK);
	sprintf(thing, "B&W version of %s", argv[optind]);
	TIFFSetField(out, TIFFTAG_IMAGEDESCRIPTION, thing);
	TIFFSetField(out, TIFFTAG_SOFTWARE, "tiff2bw");
	outbuf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(out));
	TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
	    TIFFDefaultStripSize(out, rowsperstrip));

#define	pack(a,b)	((a)<<8 | (b))
	switch (pack(photometric, config)) {
	case pack(PHOTOMETRIC_PALETTE, PLANARCONFIG_CONTIG):
	case pack(PHOTOMETRIC_PALETTE, PLANARCONFIG_SEPARATE):
		TIFFGetField(in, TIFFTAG_COLORMAP, &red, &green, &blue);
		/*
		 * Convert 16-bit colormap to 8-bit (unless it looks
		 * like an old-style 8-bit colormap).
		 */
		if (checkcmap(in, 1<<bitspersample, red, green, blue) == 16) {
			int i;
#define	CVT(x)		(((x) * 255L) / ((1L<<16)-1))
			for (i = (1<<bitspersample)-1; i >= 0; i--) {
				red[i] = CVT(red[i]);
				green[i] = CVT(green[i]);
				blue[i] = CVT(blue[i]);
			}
#undef CVT
		}
		inbuf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(in));
		for (row = 0; row < h; row++) {
			if (TIFFReadScanline(in, inbuf, row, 0) < 0)
				break;
			compresspalette(outbuf, inbuf, w, red, green, blue);
			if (TIFFWriteScanline(out, outbuf, row, 0) < 0)
				break;
		}
		break;
	case pack(PHOTOMETRIC_RGB, PLANARCONFIG_CONTIG):
		inbuf = (unsigned char *)_TIFFmalloc(TIFFScanlineSize(in));
		for (row = 0; row < h; row++) {
			if (TIFFReadScanline(in, inbuf, row, 0) < 0)
				break;
			compresscontig(outbuf, inbuf, w);
			if (TIFFWriteScanline(out, outbuf, row, 0) < 0)
				break;
		}
		break;
	case pack(PHOTOMETRIC_RGB, PLANARCONFIG_SEPARATE):
		rowsize = TIFFScanlineSize(in);
		inbuf = (unsigned char *)_TIFFmalloc(3*rowsize);
		for (row = 0; row < h; row++) {
			for (s = 0; s < 3; s++)
				if (TIFFReadScanline(in,
				    inbuf+s*rowsize, row, s) < 0)
					 return (-1);
			compresssep(outbuf,
			    inbuf, inbuf+rowsize, inbuf+2*rowsize, w);
			if (TIFFWriteScanline(out, outbuf, row, 0) < 0)
				break;
		}
		break;
	}
#undef pack
	TIFFClose(out);
	return (0);
}
int
main(int argc, char* argv[])
{
	uint16 bitspersample, shortv;
	uint32 imagewidth, imagelength;
	uint16 config = PLANARCONFIG_CONTIG;
	uint32 rowsperstrip = (uint32) -1;
	uint16 photometric = PHOTOMETRIC_RGB;
	uint16 *rmap, *gmap, *bmap;
	uint32 row;
	int cmap = -1;
	TIFF *in, *out;
	int c;
	extern int optind;
	extern char* optarg;

	while ((c = getopt(argc, argv, "C:c:p:r:")) != -1)
		switch (c) {
		case 'C':		/* force colormap interpretation */
			cmap = atoi(optarg);
			break;
		case 'c':		/* compression scheme */
			if (!processCompressOptions(optarg))
				usage();
			break;
		case 'p':		/* planar configuration */
			if (streq(optarg, "separate"))
				config = PLANARCONFIG_SEPARATE;
			else if (streq(optarg, "contig"))
				config = PLANARCONFIG_CONTIG;
			else
				usage();
			break;
		case 'r':		/* rows/strip */
			rowsperstrip = atoi(optarg);
			break;
		case '?':
			usage();
			/*NOTREACHED*/
		}
	if (argc - optind != 2)
		usage();
	in = TIFFOpen(argv[optind], "r");
	if (in == NULL)
		return (-1);
	if (!TIFFGetField(in, TIFFTAG_PHOTOMETRIC, &shortv) ||
	    shortv != PHOTOMETRIC_PALETTE) {
		fprintf(stderr, "%s: Expecting a palette image.\n",
		    argv[optind]);
		return (-1);
	}
	if (!TIFFGetField(in, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {
		fprintf(stderr,
		    "%s: No colormap (not a valid palette image).\n",
		    argv[optind]);
		return (-1);
	}
	bitspersample = 0;
	TIFFGetField(in, TIFFTAG_BITSPERSAMPLE, &bitspersample);
	if (bitspersample != 8) {
		fprintf(stderr, "%s: Sorry, can only handle 8-bit images.\n",
		    argv[optind]);
		return (-1);
	}
	out = TIFFOpen(argv[optind+1], "w");
	if (out == NULL)
		return (-2);
	cpTags(in, out);
	TIFFGetField(in, TIFFTAG_IMAGEWIDTH, &imagewidth);
	TIFFGetField(in, TIFFTAG_IMAGELENGTH, &imagelength);
	if (compression != (uint16)-1)
		TIFFSetField(out, TIFFTAG_COMPRESSION, compression);
	else
		TIFFGetField(in, TIFFTAG_COMPRESSION, &compression);
	switch (compression) {
	case COMPRESSION_JPEG:
		if (jpegcolormode == JPEGCOLORMODE_RGB)
			photometric = PHOTOMETRIC_YCBCR;
		else
			photometric = PHOTOMETRIC_RGB;
		TIFFSetField(out, TIFFTAG_JPEGQUALITY, quality);
		TIFFSetField(out, TIFFTAG_JPEGCOLORMODE, jpegcolormode);
		break;
	case COMPRESSION_LZW:
	case COMPRESSION_DEFLATE:
		if (predictor != 0)
			TIFFSetField(out, TIFFTAG_PREDICTOR, predictor);
		break;
	}
	TIFFSetField(out, TIFFTAG_PHOTOMETRIC, photometric);
	TIFFSetField(out, TIFFTAG_SAMPLESPERPIXEL, 3);
	TIFFSetField(out, TIFFTAG_PLANARCONFIG, config);
	TIFFSetField(out, TIFFTAG_ROWSPERSTRIP,
	    rowsperstrip = TIFFDefaultStripSize(out, rowsperstrip));
	(void) TIFFGetField(in, TIFFTAG_PLANARCONFIG, &shortv);
	if (cmap == -1)
		cmap = checkcmap(1<<bitspersample, rmap, gmap, bmap);
	if (cmap == 16) {
		/*
		 * Convert 16-bit colormap to 8-bit.
		 */
		int i;

		for (i = (1<<bitspersample)-1; i >= 0; i--) {
#define	CVT(x)		(((x) * 255) / ((1L<<16)-1))
			rmap[i] = CVT(rmap[i]);
			gmap[i] = CVT(gmap[i]);
			bmap[i] = CVT(bmap[i]);
		}
	}
	{ unsigned char *ibuf, *obuf;
	  register unsigned char* pp;
	  register uint32 x;
	  ibuf = (unsigned char*)_TIFFmalloc(TIFFScanlineSize(in));
	  obuf = (unsigned char*)_TIFFmalloc(TIFFScanlineSize(out));
	  switch (config) {
	  case PLANARCONFIG_CONTIG:
		for (row = 0; row < imagelength; row++) {
			if (!TIFFReadScanline(in, ibuf, row, 0))
				goto done;
			pp = obuf;
			for (x = 0; x < imagewidth; x++) {
				*pp++ = (unsigned char) rmap[ibuf[x]];
				*pp++ = (unsigned char) gmap[ibuf[x]];
				*pp++ = (unsigned char) bmap[ibuf[x]];
			}
			if (!TIFFWriteScanline(out, obuf, row, 0))
				goto done;
		}
		break;
	  case PLANARCONFIG_SEPARATE:
		for (row = 0; row < imagelength; row++) {
			if (!TIFFReadScanline(in, ibuf, row, 0))
				goto done;
			for (pp = obuf, x = 0; x < imagewidth; x++)
				*pp++ = (unsigned char) rmap[ibuf[x]];
			if (!TIFFWriteScanline(out, obuf, row, 0))
				goto done;
			for (pp = obuf, x = 0; x < imagewidth; x++)
				*pp++ = (unsigned char) gmap[ibuf[x]];
			if (!TIFFWriteScanline(out, obuf, row, 0))
				goto done;
			for (pp = obuf, x = 0; x < imagewidth; x++)
				*pp++ = (unsigned char) bmap[ibuf[x]];
			if (!TIFFWriteScanline(out, obuf, row, 0))
				goto done;
		}
		break;
	  }
	  _TIFFfree(ibuf);
	  _TIFFfree(obuf);
	}
done:
	(void) TIFFClose(in);
	(void) TIFFClose(out);
	return (0);
}