add custom directory read/write testing

2 files changed, 249 insertions, 1 deletions

diff --git a/test/Makefile.am b/test/Makefile.am
index e86bdd8b..e7d45482 100644
--- a/test/Makefile.am
+++ b/test/Makefile.am
@@ -48,7 +48,7 @@ XFAIL_TESTS =
 CLEANFILES = test_packbits.tif o-*
 
 # Executable programs which need to be built in order to support tests
-check_PROGRAMS = ascii_tag long_tag short_tag strip_rw rewrite raw_decode
+check_PROGRAMS = ascii_tag long_tag short_tag strip_rw rewrite raw_decode custom_dir
 
 # Test scripts to execute
 TESTSCRIPTS = \
@@ -179,6 +179,8 @@ rewrite_SOURCES = rewrite_tag.c
 rewrite_LDADD = $(LIBTIFF)
 raw_decode_SOURCES = raw_decode.c
 raw_decode_LDADD = $(LIBTIFF)
+custom_dir_SOURCES = custom_dir.c
+custom_dir_LDADD = $(LIBTIFF)
 
 INCLUDES = -I$(top_srcdir)/libtiff
 
diff --git a/test/custom_dir.c b/test/custom_dir.c
new file mode 100644
index 00000000..09b35a09
--- /dev/null
+++ b/test/custom_dir.c
@@ -0,0 +1,246 @@
+/* $Id: custom_dir.c,v 1.1 2012-06-06 04:58:29 fwarmerdam Exp $ */
+
+/*
+ * 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	width = 1;
+const uint16	length = 1;
+const uint16	bps = 8;
+const uint16	photometric = PHOTOMETRIC_RGB;
+const uint16	rows_per_strip = 1;
+const uint16	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          dir_offset = 0, dir_offset2 = 0;
+	uint64          read_dir_offset = 0, read_dir_offset2 = 0;
+	uint64          *dir_offset2_ptr = NULL;
+	char           *ascii_value;
+	uint16          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) < 0) {
+		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.
+	 */
+	
+	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: */