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/*
* Copyright (c) 2012, Frank Warmerdam <warmerdam@pobox.com>
*
* 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.
*/
/*
* TIFF Library
*
* Module to handling of custom directories like EXIF.
*/
#include "tif_config.h"
#include <stdio.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#include "tiffio.h"
#include "tif_dir.h"
#include "tifftest.h"
static const char filename[] = "custom_dir.tif";
#define SPP 3 /* Samples per pixel */
const uint16_t width = 1;
const uint16_t length = 1;
const uint16_t bps = 8;
const uint16_t photometric = PHOTOMETRIC_RGB;
const uint16_t rows_per_strip = 1;
const uint16_t planarconfig = PLANARCONFIG_CONTIG;
static TIFFField
customFields[] = {
{ TIFFTAG_IMAGEWIDTH, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Custom1", NULL },
{ TIFFTAG_DOTRANGE, -1, -1, TIFF_ASCII, 0, TIFF_SETGET_ASCII, TIFF_SETGET_UNDEFINED, FIELD_CUSTOM, 1, 0, "Custom2", NULL },
};
static TIFFFieldArray customFieldArray = { tfiatOther, 0, 2, customFields };
int
main()
{
TIFF *tif;
unsigned char buf[SPP] = { 0, 127, 255 };
uint64_t dir_offset = 0, dir_offset2 = 0;
uint64_t read_dir_offset = 0, read_dir_offset2 = 0;
uint64_t *dir_offset2_ptr = NULL;
char *ascii_value;
uint16_t count16 = 0;
/* We write the main directory as a simple image. */
tif = TIFFOpen(filename, "w+");
if (!tif) {
fprintf (stderr, "Can't create test TIFF file %s.\n", filename);
return 1;
}
if (!TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, width)) {
fprintf (stderr, "Can't set ImageWidth tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_IMAGELENGTH, length)) {
fprintf (stderr, "Can't set ImageLength tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, bps)) {
fprintf (stderr, "Can't set BitsPerSample tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, SPP)) {
fprintf (stderr, "Can't set SamplesPerPixel tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, rows_per_strip)) {
fprintf (stderr, "Can't set SamplesPerPixel tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_PLANARCONFIG, planarconfig)) {
fprintf (stderr, "Can't set PlanarConfiguration tag.\n");
goto failure;
}
if (!TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, photometric)) {
fprintf (stderr, "Can't set PhotometricInterpretation tag.\n");
goto failure;
}
/* Write dummy pixel data. */
if (TIFFWriteScanline(tif, buf, 0, 0) == -1) {
fprintf (stderr, "Can't write image data.\n");
goto failure;
}
if (!TIFFWriteDirectory( tif )) {
fprintf (stderr, "TIFFWriteDirectory() failed.\n");
goto failure;
}
/*
* Now create an EXIF directory.
*/
if (TIFFCreateEXIFDirectory(tif) != 0) {
fprintf (stderr, "TIFFCreateEXIFDirectory() failed.\n" );
goto failure;
}
if (!TIFFSetField( tif, EXIFTAG_SPECTRALSENSITIVITY, "EXIF Spectral Sensitivity")) {
fprintf (stderr, "Can't write SPECTRALSENSITIVITY\n" );
goto failure;
}
if (!TIFFWriteCustomDirectory( tif, &dir_offset )) {
fprintf (stderr, "TIFFWriteCustomDirectory() with EXIF failed.\n");
goto failure;
}
/*
* Now create a custom directory with tags that conflict with mainline
* TIFF tags.
*/
TIFFFreeDirectory( tif );
if (TIFFCreateCustomDirectory(tif, &customFieldArray) != 0) {
fprintf (stderr, "TIFFCreateEXIFDirectory() failed.\n" );
goto failure;
}
if (!TIFFSetField( tif, TIFFTAG_IMAGEWIDTH, "*Custom1")) { /* not really IMAGEWIDTH */
fprintf (stderr, "Can't write pseudo-IMAGEWIDTH.\n" );
goto failure;
}
if (!TIFFSetField( tif, TIFFTAG_DOTRANGE, "*Custom2")) { /* not really DOTWIDTH */
fprintf (stderr, "Can't write pseudo-DOTWIDTH.\n" );
goto failure;
}
if (!TIFFWriteCustomDirectory( tif, &dir_offset2 )) {
fprintf (stderr, "TIFFWriteCustomDirectory() with EXIF failed.\n");
goto failure;
}
/*
* Go back to the first directory, and add the EXIFIFD pointer.
*/
TIFFSetDirectory(tif, 0);
TIFFSetField(tif, TIFFTAG_EXIFIFD, dir_offset );
TIFFSetField(tif, TIFFTAG_SUBIFD, 1, &dir_offset2 );
TIFFClose(tif);
/* Ok, now test whether we can read written values in the EXIF directory. */
tif = TIFFOpen(filename, "r");
TIFFGetField(tif, TIFFTAG_EXIFIFD, &read_dir_offset );
if( read_dir_offset != dir_offset ) {
fprintf (stderr, "Did not get expected EXIFIFD.\n" );
goto failure;
}
TIFFGetField(tif, TIFFTAG_SUBIFD, &count16, &dir_offset2_ptr );
read_dir_offset2 = dir_offset2_ptr[0];
if( read_dir_offset2 != dir_offset2 || count16 != 1) {
fprintf (stderr, "Did not get expected SUBIFD.\n" );
goto failure;
}
if( !TIFFReadEXIFDirectory(tif, read_dir_offset) ) {
fprintf (stderr, "TIFFReadEXIFDirectory() failed.\n" );
goto failure;
}
if (!TIFFGetField( tif, EXIFTAG_SPECTRALSENSITIVITY, &ascii_value) ) {
fprintf (stderr, "reading SPECTRALSENSITIVITY failed.\n" );
goto failure;
}
if( strcmp(ascii_value,"EXIF Spectral Sensitivity") != 0) {
fprintf (stderr, "got wrong SPECTRALSENSITIVITY value.\n" );
goto failure;
}
/* Try reading the Custom directory */
if( !TIFFReadCustomDirectory(tif, read_dir_offset2, &customFieldArray) ) {
fprintf (stderr, "TIFFReadCustomDirectory() failed.\n" );
goto failure;
}
if (!TIFFGetField( tif, TIFFTAG_IMAGEWIDTH, &ascii_value) ) {
fprintf (stderr, "reading pseudo-IMAGEWIDTH failed.\n" );
goto failure;
}
if( strcmp(ascii_value,"*Custom1") != 0) {
fprintf (stderr, "got wrong pseudo-IMAGEWIDTH value.\n" );
goto failure;
}
if (!TIFFGetField( tif, TIFFTAG_DOTRANGE, &ascii_value) ) {
fprintf (stderr, "reading pseudo-DOTRANGE failed.\n" );
goto failure;
}
if( strcmp(ascii_value,"*Custom2") != 0) {
fprintf (stderr, "got wrong pseudo-DOTRANGE value.\n" );
goto failure;
}
TIFFClose(tif);
/* All tests passed; delete file and exit with success status. */
unlink(filename);
return 0;
failure:
/*
* Something goes wrong; close file and return unsuccessful status.
* Do not remove the file for further manual investigation.
*/
TIFFClose(tif);
return 1;
}
/* vim: set ts=8 sts=8 sw=8 noet: */
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