src/tiff/tools/tiffgt.c

/* $Id$ */

/*
 * Copyright (c) 1988-1997 Sam Leffler
 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
 * Copyright (c) 2003, Andrey Kiselev <dron@ak4719.spb.edu>
 *
 * 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.
 */

#include "tif_config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#if HAVE_APPLE_OPENGL_FRAMEWORK
# include <OpenGL/gl.h>
# include <GLUT/glut.h>
#else
# include <GL/gl.h>
# include <GL/glut.h>
#endif

#include "tiffio.h"

#ifndef HAVE_GETOPT
extern int getopt(int, char**, char*);
#endif

static  uint32  width = 0, height = 0;          /* window width & height */
static  uint32* raster = NULL;                  /* displayable image */
static TIFFRGBAImage img;
static int      order0 = 0, order;
static uint16   photo0 = (uint16) -1, photo;
static int      stoponerr = 0;                  /* stop on read error */
static int      verbose = 0;
#define TITLE_LENGTH    1024
static char     title[TITLE_LENGTH];            /* window title line */
static uint32   xmax, ymax;
static char**   filelist = NULL;
static int      fileindex;
static int      filenum;
static TIFFErrorHandler oerror;
static TIFFErrorHandler owarning;

static void	cleanup_and_exit(void);
static int	initImage(void);
static int	prevImage(void);
static int	nextImage(void);
static void	setWindowSize(void);
static void	usage(void);
static uint16	photoArg(const char*);
static void	raster_draw(void);
static void	raster_reshape(int, int);
static void	raster_keys(unsigned char, int, int);
static void	raster_special(int, int, int);

extern  char* optarg;
extern  int optind;
static TIFF* tif = NULL;

int
main(int argc, char* argv[])
{
        int c;
        int dirnum = -1;
        uint32 diroff = 0;

        oerror = TIFFSetErrorHandler(NULL);
        owarning = TIFFSetWarningHandler(NULL);
        while ((c = getopt(argc, argv, "d:o:p:eflmsvw?")) != -1)
            switch (c) {
            case 'd':
                dirnum = atoi(optarg);
                break;
            case 'e':
                oerror = TIFFSetErrorHandler(oerror);
                break;
            case 'l':
                order0 = FILLORDER_LSB2MSB;
                break;
            case 'm':
                order0 = FILLORDER_MSB2LSB;
                break;
            case 'o':
                diroff = strtoul(optarg, NULL, 0);
                break;
            case 'p':
                photo0 = photoArg(optarg);
                break;
            case 's':
                stoponerr = 1;
                break;
            case 'w':
                owarning = TIFFSetWarningHandler(owarning);
                break;
            case 'v':
                verbose = 1;
                break;
            case '?':
                usage();
                /*NOTREACHED*/
            }
        filenum = argc - optind;
        if ( filenum < 1)
                usage();

        glutInit(&argc, argv);
        glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);

        /*
         * Get the screen size
         */
        xmax = glutGet(GLUT_SCREEN_WIDTH);
        ymax = glutGet(GLUT_SCREEN_HEIGHT);

        /*
         * Use 90% of the screen size
         */
        xmax = xmax - xmax / 10.0;
        ymax = ymax - ymax / 10.0;

        filelist = (char **) _TIFFmalloc(filenum * sizeof(char*));
        if (!filelist) {
                TIFFError(argv[0], "Can not allocate space for the file list.");
                return 1;
        }
        _TIFFmemcpy(filelist, argv + optind, filenum * sizeof(char*));
        fileindex = -1;
        if (nextImage() < 0) {
                _TIFFfree(filelist);
                return 2;
        }
        /*
         * Set initial directory if user-specified
         * file was opened successfully.
         */
        if (dirnum != -1 && !TIFFSetDirectory(tif, dirnum))
            TIFFError(argv[0], "Error, seeking to directory %d", dirnum);
        if (diroff != 0 && !TIFFSetSubDirectory(tif, diroff))
            TIFFError(argv[0], "Error, setting subdirectory at %#x", diroff);
        order = order0;
        photo = photo0;
	if (initImage() < 0){
                _TIFFfree(filelist);
                return 3;
        }
        /*
         * Create a new window or reconfigure an existing
         * one to suit the image to be displayed.
         */
        glutInitWindowSize(width, height);
        snprintf(title, TITLE_LENGTH - 1, "%s [%u]", filelist[fileindex],
                (unsigned int) TIFFCurrentDirectory(tif));
        glutCreateWindow(title);
        glutDisplayFunc(raster_draw);
        glutReshapeFunc(raster_reshape);
        glutKeyboardFunc(raster_keys);
        glutSpecialFunc(raster_special);
        glutMainLoop();

        cleanup_and_exit();
        return 0;
}

static void
cleanup_and_exit(void)
{
        TIFFRGBAImageEnd(&img);
        if (filelist != NULL)
                _TIFFfree(filelist);
        if (raster != NULL)
                _TIFFfree(raster);
        if (tif != NULL)
                TIFFClose(tif);
        exit(0);
}

static int
initImage(void)
{
        uint32 w, h;

        if (order)
                TIFFSetField(tif, TIFFTAG_FILLORDER, order);
        if (photo != (uint16) -1)
                TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, photo);
        if (!TIFFRGBAImageBegin(&img, tif, stoponerr, title)) {
                TIFFError(filelist[fileindex], title);
                TIFFClose(tif);
                tif = NULL;
                return -1;
        }

        /*
         * Setup the image raster as required.
         */
        h = img.height;
        w = img.width;
        if (h > ymax) {
                w = (int)(w * ((float)ymax / h));
                h = ymax;
        }
        if (w > xmax) {
                h = (int)(h * ((float)xmax / w));
                w = xmax;
        }

        if (w != width || h != height) {
            if (raster != NULL)
                _TIFFfree(raster), raster = NULL;
            raster = (uint32*) _TIFFmalloc(img.width * img.height * sizeof (uint32));
            if (raster == NULL) {
                width = height = 0;
                TIFFError(filelist[fileindex], "No space for raster buffer");
                cleanup_and_exit();
            }
            width = w;
            height = h;
        }
        TIFFRGBAImageGet(&img, raster, img.width, img.height);
#if HOST_BIGENDIAN
        TIFFSwabArrayOfLong(raster,img.width*img.height);
#endif
	return 0;
}

static int
prevImage(void)
{
        if (fileindex > 0)
                fileindex--;
        else if (tif)
                return fileindex;
        if (tif)
                TIFFClose(tif);
        tif = TIFFOpen(filelist[fileindex], "r");
        if (tif == NULL)
                return -1;
        return fileindex;
}

static int
nextImage(void)
{
        if (fileindex < filenum - 1)
                fileindex++;
        else if (tif)
                return fileindex;
        if (tif)
                TIFFClose(tif);
        tif = TIFFOpen(filelist[fileindex], "r");
        if (tif == NULL)
                return -1;
        return fileindex;
}

static void
setWindowSize(void)
{
        glutReshapeWindow(width, height);
}

static void
raster_draw(void)
{
  glDrawPixels(img.width, img.height, GL_RGBA, GL_UNSIGNED_BYTE, (const GLvoid *) raster);
}

static void
raster_reshape(int win_w, int win_h)
{
        GLfloat xratio = (GLfloat)win_w/img.width;
        GLfloat yratio = (GLfloat)win_h/img.height;
        int     ratio = (int)(((xratio > yratio)?xratio:yratio) * 100);

        glPixelZoom(xratio, yratio);
        glViewport(0, 0, win_w, win_h);
        snprintf(title, 1024, "%s [%u] %d%%", filelist[fileindex],
                (unsigned int) TIFFCurrentDirectory(tif), ratio);
        glutSetWindowTitle(title);
}

static void
raster_keys(unsigned char key, int x, int y)
{
        switch (key) {
                case 'b':                       /* photometric MinIsBlack */
                    photo = PHOTOMETRIC_MINISBLACK;
                    initImage();
                    break;
                case 'l':                       /* lsb-to-msb FillOrder */
                    order = FILLORDER_LSB2MSB;
                    initImage();
                    break;
                case 'm':                       /* msb-to-lsb FillOrder */
                    order = FILLORDER_MSB2LSB;
                    initImage();
                    break;
                case 'w':                       /* photometric MinIsWhite */
                    photo = PHOTOMETRIC_MINISWHITE;
                    initImage();
                    break;
                case 'W':                       /* toggle warnings */
                    owarning = TIFFSetWarningHandler(owarning);
                    initImage();
                    break;
                case 'E':                       /* toggle errors */
                    oerror = TIFFSetErrorHandler(oerror);
                    initImage();
                    break;
                case 'z':                       /* reset to defaults */
                case 'Z':
                    order = order0;
                    photo = photo0;
                    if (owarning == NULL)
                        owarning = TIFFSetWarningHandler(NULL);
                    if (oerror == NULL)
                        oerror = TIFFSetErrorHandler(NULL);
                    initImage();
                    break;
                case 'q':                       /* exit */
                case '\033':
                    cleanup_and_exit();
        }
        glutPostRedisplay();
}

static void
raster_special(int key, int x, int y)
{
        switch (key) {
                case GLUT_KEY_PAGE_UP:          /* previous logical image */
                    if (TIFFCurrentDirectory(tif) > 0) {
                            if (TIFFSetDirectory(tif,
                                                 TIFFCurrentDirectory(tif)-1)) {
                                    initImage();
                                    setWindowSize();
                        }
                    } else {
                            TIFFRGBAImageEnd(&img);
                            prevImage();
                            initImage();
                            setWindowSize();
                    }
                break;
                case GLUT_KEY_PAGE_DOWN:        /* next logical image */
                    if (!TIFFLastDirectory(tif)) {
                            if (TIFFReadDirectory(tif)) {
                                    initImage();
                                    setWindowSize();
                            }
                    } else {
                            TIFFRGBAImageEnd(&img);
                            nextImage();
                            initImage();
                            setWindowSize();
                    }
                break;
                case GLUT_KEY_HOME:             /* 1st image in current file */
                        if (TIFFSetDirectory(tif, 0)) {
                                TIFFRGBAImageEnd(&img);
                                initImage();
                                setWindowSize();
                        }
                break;
                case GLUT_KEY_END:              /* last image in current file */
                        TIFFRGBAImageEnd(&img);
                        while (!TIFFLastDirectory(tif))
                                TIFFReadDirectory(tif);
                        initImage();
                        setWindowSize();
                break;
        }
        glutPostRedisplay();
}


char* stuff[] = {
"usage: tiffgt [options] file.tif",
"where options are:",
" -c            use colormap visual",
" -d dirnum     set initial directory (default is 0)",
" -e            enable display of TIFF error messages",
" -l            force lsb-to-msb FillOrder",
" -m            force msb-to-lsb FillOrder",
" -o offset     set initial directory offset",
" -p photo      override photometric interpretation",
" -r            use fullcolor visual",
" -s            stop decoding on first error (default is ignore errors)",
" -v            enable verbose mode",
" -w            enable display of TIFF warning messages",
NULL
};

static void
usage(void)
{
        char buf[BUFSIZ];
        int i;

        setbuf(stderr, buf);
                fprintf(stderr, "%s\n\n", TIFFGetVersion());
        for (i = 0; stuff[i] != NULL; i++)
                fprintf(stderr, "%s\n", stuff[i]);
        exit(-1);
}

static uint16
photoArg(const char* arg)
{
        if (strcmp(arg, "miniswhite") == 0)
            return (PHOTOMETRIC_MINISWHITE);
        else if (strcmp(arg, "minisblack") == 0)
            return (PHOTOMETRIC_MINISBLACK);
        else if (strcmp(arg, "rgb") == 0)
            return (PHOTOMETRIC_RGB);
        else if (strcmp(arg, "palette") == 0)
            return (PHOTOMETRIC_PALETTE);
        else if (strcmp(arg, "mask") == 0)
            return (PHOTOMETRIC_MASK);
        else if (strcmp(arg, "separated") == 0)
            return (PHOTOMETRIC_SEPARATED);
        else if (strcmp(arg, "ycbcr") == 0)
            return (PHOTOMETRIC_YCBCR);
        else if (strcmp(arg, "cielab") == 0)
            return (PHOTOMETRIC_CIELAB);
        else if (strcmp(arg, "logl") == 0)
            return (PHOTOMETRIC_LOGL);
        else if (strcmp(arg, "logluv") == 0)
            return (PHOTOMETRIC_LOGLUV);
        else
            return ((uint16) -1);
}

/* vim: set ts=8 sts=8 sw=8 noet: */
Commit	Line	Data
	1	/* $Id$ */
	2
	3	/*
	4	* Copyright (c) 1988-1997 Sam Leffler
	5	* Copyright (c) 1991-1997 Silicon Graphics, Inc.
	6	* Copyright (c) 2003, Andrey Kiselev <dron@ak4719.spb.edu>
	7	*
	8	* Permission to use, copy, modify, distribute, and sell this software and
	9	* its documentation for any purpose is hereby granted without fee, provided
	10	* that (i) the above copyright notices and this permission notice appear in
	11	* all copies of the software and related documentation, and (ii) the names of
	12	* Sam Leffler and Silicon Graphics may not be used in any advertising or
	13	* publicity relating to the software without the specific, prior written
	14	* permission of Sam Leffler and Silicon Graphics.
	15	*
	16	* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
	17	* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
	18	* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
	19	*
	20	* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
	21	* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
	22	* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
	23	* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
	24	* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
	25	* OF THIS SOFTWARE.
	26	*/
	27
	28	#include "tif_config.h"
	29	#include <stdio.h>
	30	#include <stdlib.h>
	31	#include <string.h>
	32	#include <unistd.h>
	33
	34	#if HAVE_APPLE_OPENGL_FRAMEWORK
	35	# include <OpenGL/gl.h>
	36	# include <GLUT/glut.h>
	37	#else
	38	# include <GL/gl.h>
	39	# include <GL/glut.h>
	40	#endif
	41
	42	#include "tiffio.h"
	43
	44	#ifndef HAVE_GETOPT
	45	extern int getopt(int, char*, char);
	46	#endif
	47
	48	static uint32 width = 0, height = 0; /* window width & height */
	49	static uint32* raster = NULL; /* displayable image */
	50	static TIFFRGBAImage img;
	51	static int order0 = 0, order;
	52	static uint16 photo0 = (uint16) -1, photo;
	53	static int stoponerr = 0; /* stop on read error */
	54	static int verbose = 0;
	55	#define TITLE_LENGTH 1024
	56	static char title[TITLE_LENGTH]; /* window title line */
	57	static uint32 xmax, ymax;
	58	static char** filelist = NULL;
	59	static int fileindex;
	60	static int filenum;
	61	static TIFFErrorHandler oerror;
	62	static TIFFErrorHandler owarning;
	63
	64	static void cleanup_and_exit(void);
	65	static int initImage(void);
	66	static int prevImage(void);
	67	static int nextImage(void);
	68	static void setWindowSize(void);
	69	static void usage(void);
	70	static uint16 photoArg(const char*);
	71	static void raster_draw(void);
	72	static void raster_reshape(int, int);
	73	static void raster_keys(unsigned char, int, int);
	74	static void raster_special(int, int, int);
	75
	76	extern char* optarg;
	77	extern int optind;
	78	static TIFF* tif = NULL;
	79
	80	int
	81	main(int argc, char* argv[])
	82	{
	83	int c;
	84	int dirnum = -1;
	85	uint32 diroff = 0;
	86
	87	oerror = TIFFSetErrorHandler(NULL);
	88	owarning = TIFFSetWarningHandler(NULL);
	89	while ((c = getopt(argc, argv, "d:o:p:eflmsvw?")) != -1)
	90	switch (c) {
	91	case 'd':
	92	dirnum = atoi(optarg);
	93	break;
	94	case 'e':
	95	oerror = TIFFSetErrorHandler(oerror);
	96	break;
	97	case 'l':
	98	order0 = FILLORDER_LSB2MSB;
	99	break;
	100	case 'm':
	101	order0 = FILLORDER_MSB2LSB;
	102	break;
	103	case 'o':
	104	diroff = strtoul(optarg, NULL, 0);
	105	break;
	106	case 'p':
	107	photo0 = photoArg(optarg);
	108	break;
	109	case 's':
	110	stoponerr = 1;
	111	break;
	112	case 'w':
	113	owarning = TIFFSetWarningHandler(owarning);
	114	break;
	115	case 'v':
	116	verbose = 1;
	117	break;
	118	case '?':
	119	usage();
	120	/NOTREACHED/
	121	}
	122	filenum = argc - optind;
	123	if ( filenum < 1)
	124	usage();
	125
	126	glutInit(&argc, argv);
	127	glutInitDisplayMode(GLUT_SINGLE \| GLUT_RGB);
	128
	129	/*
	130	* Get the screen size
	131	*/
	132	xmax = glutGet(GLUT_SCREEN_WIDTH);
	133	ymax = glutGet(GLUT_SCREEN_HEIGHT);
	134
	135	/*
	136	* Use 90% of the screen size
	137	*/
	138	xmax = xmax - xmax / 10.0;
	139	ymax = ymax - ymax / 10.0;
	140
	141	filelist = (char *) _TIFFmalloc(filenum sizeof(char*));
	142	if (!filelist) {
	143	TIFFError(argv[0], "Can not allocate space for the file list.");
	144	return 1;
	145	}
	146	_TIFFmemcpy(filelist, argv + optind, filenum * sizeof(char*));
	147	fileindex = -1;
	148	if (nextImage() < 0) {
	149	_TIFFfree(filelist);
	150	return 2;
	151	}
	152	/*
	153	* Set initial directory if user-specified
	154	* file was opened successfully.
	155	*/
	156	if (dirnum != -1 && !TIFFSetDirectory(tif, dirnum))
	157	TIFFError(argv[0], "Error, seeking to directory %d", dirnum);
	158	if (diroff != 0 && !TIFFSetSubDirectory(tif, diroff))
	159	TIFFError(argv[0], "Error, setting subdirectory at %#x", diroff);
	160	order = order0;
	161	photo = photo0;
	162	if (initImage() < 0){
	163	_TIFFfree(filelist);
	164	return 3;
	165	}
	166	/*
	167	* Create a new window or reconfigure an existing
	168	* one to suit the image to be displayed.
	169	*/
	170	glutInitWindowSize(width, height);
	171	snprintf(title, TITLE_LENGTH - 1, "%s [%u]", filelist[fileindex],
	172	(unsigned int) TIFFCurrentDirectory(tif));
	173	glutCreateWindow(title);
	174	glutDisplayFunc(raster_draw);
	175	glutReshapeFunc(raster_reshape);
	176	glutKeyboardFunc(raster_keys);
	177	glutSpecialFunc(raster_special);
	178	glutMainLoop();
	179
	180	cleanup_and_exit();
	181	return 0;
	182	}
	183
	184	static void
	185	cleanup_and_exit(void)
	186	{
	187	TIFFRGBAImageEnd(&img);
	188	if (filelist != NULL)
	189	_TIFFfree(filelist);
	190	if (raster != NULL)
	191	_TIFFfree(raster);
	192	if (tif != NULL)
	193	TIFFClose(tif);
	194	exit(0);
	195	}
	196
	197	static int
	198	initImage(void)
	199	{
	200	uint32 w, h;
	201
	202	if (order)
	203	TIFFSetField(tif, TIFFTAG_FILLORDER, order);
	204	if (photo != (uint16) -1)
	205	TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, photo);
	206	if (!TIFFRGBAImageBegin(&img, tif, stoponerr, title)) {
	207	TIFFError(filelist[fileindex], title);
	208	TIFFClose(tif);
	209	tif = NULL;
	210	return -1;
	211	}
	212
	213	/*
	214	* Setup the image raster as required.
	215	*/
	216	h = img.height;
	217	w = img.width;
	218	if (h > ymax) {
	219	w = (int)(w * ((float)ymax / h));
	220	h = ymax;
	221	}
	222	if (w > xmax) {
	223	h = (int)(h * ((float)xmax / w));
	224	w = xmax;
	225	}
	226
	227	if (w != width \|\| h != height) {
	228	if (raster != NULL)
	229	_TIFFfree(raster), raster = NULL;
	230	raster = (uint32) _TIFFmalloc(img.width img.height * sizeof (uint32));
	231	if (raster == NULL) {
	232	width = height = 0;
	233	TIFFError(filelist[fileindex], "No space for raster buffer");
	234	cleanup_and_exit();
	235	}
	236	width = w;
	237	height = h;
	238	}
	239	TIFFRGBAImageGet(&img, raster, img.width, img.height);
	240	#if HOST_BIGENDIAN
	241	TIFFSwabArrayOfLong(raster,img.width*img.height);
	242	#endif
	243	return 0;
	244	}
	245
	246	static int
	247	prevImage(void)
	248	{
	249	if (fileindex > 0)
	250	fileindex--;
	251	else if (tif)
	252	return fileindex;
	253	if (tif)
	254	TIFFClose(tif);
	255	tif = TIFFOpen(filelist[fileindex], "r");
	256	if (tif == NULL)
	257	return -1;
	258	return fileindex;
	259	}
	260
	261	static int
	262	nextImage(void)
	263	{
	264	if (fileindex < filenum - 1)
	265	fileindex++;
	266	else if (tif)
	267	return fileindex;
	268	if (tif)
	269	TIFFClose(tif);
	270	tif = TIFFOpen(filelist[fileindex], "r");
	271	if (tif == NULL)
	272	return -1;
	273	return fileindex;
	274	}
	275
	276	static void
	277	setWindowSize(void)
	278	{
	279	glutReshapeWindow(width, height);
	280	}
	281
	282	static void
	283	raster_draw(void)
	284	{
	285	glDrawPixels(img.width, img.height, GL_RGBA, GL_UNSIGNED_BYTE, (const GLvoid *) raster);
	286	}
	287
	288	static void
	289	raster_reshape(int win_w, int win_h)
	290	{
	291	GLfloat xratio = (GLfloat)win_w/img.width;
	292	GLfloat yratio = (GLfloat)win_h/img.height;
	293	int ratio = (int)(((xratio > yratio)?xratio:yratio) * 100);
	294
	295	glPixelZoom(xratio, yratio);
	296	glViewport(0, 0, win_w, win_h);
	297	snprintf(title, 1024, "%s [%u] %d%%", filelist[fileindex],
	298	(unsigned int) TIFFCurrentDirectory(tif), ratio);
	299	glutSetWindowTitle(title);
	300	}
	301
	302	static void
	303	raster_keys(unsigned char key, int x, int y)
	304	{
	305	switch (key) {
	306	case 'b': /* photometric MinIsBlack */
	307	photo = PHOTOMETRIC_MINISBLACK;
	308	initImage();
	309	break;
	310	case 'l': /* lsb-to-msb FillOrder */
	311	order = FILLORDER_LSB2MSB;
	312	initImage();
	313	break;
	314	case 'm': /* msb-to-lsb FillOrder */
	315	order = FILLORDER_MSB2LSB;
	316	initImage();
	317	break;
	318	case 'w': /* photometric MinIsWhite */
	319	photo = PHOTOMETRIC_MINISWHITE;
	320	initImage();
	321	break;
	322	case 'W': /* toggle warnings */
	323	owarning = TIFFSetWarningHandler(owarning);
	324	initImage();
	325	break;
	326	case 'E': /* toggle errors */
	327	oerror = TIFFSetErrorHandler(oerror);
	328	initImage();
	329	break;
	330	case 'z': /* reset to defaults */
	331	case 'Z':
	332	order = order0;
	333	photo = photo0;
	334	if (owarning == NULL)
	335	owarning = TIFFSetWarningHandler(NULL);
	336	if (oerror == NULL)
	337	oerror = TIFFSetErrorHandler(NULL);
	338	initImage();
	339	break;
	340	case 'q': /* exit */
	341	case '\033':
	342	cleanup_and_exit();
	343	}
	344	glutPostRedisplay();
	345	}
	346
	347	static void
	348	raster_special(int key, int x, int y)
	349	{
	350	switch (key) {
	351	case GLUT_KEY_PAGE_UP: /* previous logical image */
	352	if (TIFFCurrentDirectory(tif) > 0) {
	353	if (TIFFSetDirectory(tif,
	354	TIFFCurrentDirectory(tif)-1)) {
	355	initImage();
	356	setWindowSize();
	357	}
	358	} else {
	359	TIFFRGBAImageEnd(&img);
	360	prevImage();
	361	initImage();
	362	setWindowSize();
	363	}
	364	break;
	365	case GLUT_KEY_PAGE_DOWN: /* next logical image */
	366	if (!TIFFLastDirectory(tif)) {
	367	if (TIFFReadDirectory(tif)) {
	368	initImage();
	369	setWindowSize();
	370	}
	371	} else {
	372	TIFFRGBAImageEnd(&img);
	373	nextImage();
	374	initImage();
	375	setWindowSize();
	376	}
	377	break;
	378	case GLUT_KEY_HOME: /* 1st image in current file */
	379	if (TIFFSetDirectory(tif, 0)) {
	380	TIFFRGBAImageEnd(&img);
	381	initImage();
	382	setWindowSize();
	383	}
	384	break;
	385	case GLUT_KEY_END: /* last image in current file */
	386	TIFFRGBAImageEnd(&img);
	387	while (!TIFFLastDirectory(tif))
	388	TIFFReadDirectory(tif);
	389	initImage();
	390	setWindowSize();
	391	break;
	392	}
	393	glutPostRedisplay();
	394	}
	395
	396
	397
	398	char* stuff[] = {
	399	"usage: tiffgt [options] file.tif",
	400	"where options are:",
	401	" -c use colormap visual",
	402	" -d dirnum set initial directory (default is 0)",
	403	" -e enable display of TIFF error messages",
	404	" -l force lsb-to-msb FillOrder",
	405	" -m force msb-to-lsb FillOrder",
	406	" -o offset set initial directory offset",
	407	" -p photo override photometric interpretation",
	408	" -r use fullcolor visual",
	409	" -s stop decoding on first error (default is ignore errors)",
	410	" -v enable verbose mode",
	411	" -w enable display of TIFF warning messages",
	412	NULL
	413	};
	414
	415	static void
	416	usage(void)
	417	{
	418	char buf[BUFSIZ];
	419	int i;
	420
	421	setbuf(stderr, buf);
	422	fprintf(stderr, "%s\n\n", TIFFGetVersion());
	423	for (i = 0; stuff[i] != NULL; i++)
	424	fprintf(stderr, "%s\n", stuff[i]);
	425	exit(-1);
	426	}
	427
	428	static uint16
	429	photoArg(const char* arg)
	430	{
	431	if (strcmp(arg, "miniswhite") == 0)
	432	return (PHOTOMETRIC_MINISWHITE);
	433	else if (strcmp(arg, "minisblack") == 0)
	434	return (PHOTOMETRIC_MINISBLACK);
	435	else if (strcmp(arg, "rgb") == 0)
	436	return (PHOTOMETRIC_RGB);
	437	else if (strcmp(arg, "palette") == 0)
	438	return (PHOTOMETRIC_PALETTE);
	439	else if (strcmp(arg, "mask") == 0)
	440	return (PHOTOMETRIC_MASK);
	441	else if (strcmp(arg, "separated") == 0)
	442	return (PHOTOMETRIC_SEPARATED);
	443	else if (strcmp(arg, "ycbcr") == 0)
	444	return (PHOTOMETRIC_YCBCR);
	445	else if (strcmp(arg, "cielab") == 0)
	446	return (PHOTOMETRIC_CIELAB);
	447	else if (strcmp(arg, "logl") == 0)
	448	return (PHOTOMETRIC_LOGL);
	449	else if (strcmp(arg, "logluv") == 0)
	450	return (PHOTOMETRIC_LOGLUV);
	451	else
	452	return ((uint16) -1);
	453	}
	454
	455	/* vim: set ts=8 sts=8 sw=8 noet: */