Fixed the interpretation of some tags as being optional in IFD 1

(to match the EXIF 2.2 spec) which stops them from being erroneously removed
from a file

diff --git a/NEWS b/NEWS
index e19d850..91afa40 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -10,6 +10,9 @@ libexif-0.6.x:
   * Fixed some Olympus/Sanyo MakerNote interpretations
   * Fixed bug #1946138 to stop ignoring CFLAGS in the sqrt configure test
   * Added remaining GPS tags from the EXIF 2.2 spec to the tag table
+  * Fixed the interpretation of some tags as being optional in IFD 1
+    (to match the EXIF 2.2 spec) which stops them from being erroneously
+    removed from a file
 
 libexif-0.6.17 (2008-11-06):
   * Updated translations: cs, de, pl, sk, vi

diff --git a/libexif/exif-tag.c b/libexif/exif-tag.c
index 6d63dd9..c51ed66 100644 (file)
--- a/libexif/exif-tag.c
+++ b/libexif/exif-tag.c
@@ -43,7 +43,8 @@ static const struct {
        const char *name;
        const char *title;
        const char *description;
-       ExifSupportLevel esl[EXIF_IFD_COUNT][4];
+       /*! indexed by the types [ExifIfd][ExifDataType] */
+       ExifSupportLevel esl[EXIF_IFD_COUNT][EXIF_DATA_TYPE_COUNT];
 } ExifTagTable[] = {
 #ifndef NO_VERBOSE_TAG_STRINGS
        {EXIF_TAG_NEW_SUBFILE_TYPE, "NewSubfileType",
@@ -163,7 +164,7 @@ static const struct {
         N_("A transfer function for the image, described in tabular style. "
            "Normally this tag is not necessary, since color space is "
            "specified in the color space information tag (<ColorSpace>)."),
-        { ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
+        { ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
        {EXIF_TAG_SOFTWARE, "Software", N_("Software"),
         N_("This tag records the name and version of the software or "
            "firmware of the camera or image input device used to "
@@ -171,29 +172,29 @@ static const struct {
            "it is recommended that the example shown below be "
            "followed. When the field is left blank, it is treated as "
            "unknown."),
-        { ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
+        { ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
        {EXIF_TAG_DATE_TIME, "DateTime", N_("Date and Time"),
         N_("The date and time of image creation. In this standard "
            "(EXIF-2.1) it is the date and time the file was changed."),
-        { ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
+        { ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
        {EXIF_TAG_ARTIST, "Artist", N_("Artist"),
         N_("This tag records the name of the camera owner, photographer or "
            "image creator. The detailed format is not specified, but it is "
            "recommended that the information be written as in the example "
            "below for ease of Interoperability. When the field is "
            "left blank, it is treated as unknown."),
-        { ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
+        { ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
        {EXIF_TAG_WHITE_POINT, "WhitePoint", N_("White Point"),
         N_("The chromaticity of the white point of the image. Normally "
            "this tag is not necessary, since color space is specified "
            "in the color space information tag (<ColorSpace>)."),
-        { ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
+        { ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
        {EXIF_TAG_PRIMARY_CHROMATICITIES, "PrimaryChromaticities",
         N_("Primary Chromaticities"),
         N_("The chromaticity of the three primary colors of the image. "
            "Normally this tag is not necessary, since color space is "
            "specified in the color space information tag (<ColorSpace>)."),
-        { ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
+        { ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
        {EXIF_TAG_TRANSFER_RANGE, "TransferRange", N_("Transfer Range"), ""},
        {EXIF_TAG_SUB_IFDS, "SubIFDs", "SubIFD Offsets", N_("Defined by Adobe Corporation "
            "to enable TIFF Trees within a TIFF file.")},
@@ -254,7 +255,7 @@ static const struct {
            "in a color space information tag, with the default "
            "being the value that gives the optimal image characteristics "
            "Interoperability these conditions."),
-        { ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
+        { ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
        {EXIF_TAG_XML_PACKET, "XMLPacket", N_("XML Packet"), N_("XMP Metadata")},
        {EXIF_TAG_RELATED_IMAGE_FILE_FORMAT, "RelatedImageFileFormat",
         "RelatedImageFileFormat", ""},
@@ -291,7 +292,7 @@ static const struct {
            "by a terminating NULL code, then the editor copyright is given "
            "(see example 3). When the field is left blank, it is treated "
            "as unknown."),
-        { ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
+        { ESL_OOOO, ESL_OOOO, ESL_NNNN, ESL_NNNN, ESL_NNNN } },
        {EXIF_TAG_EXPOSURE_TIME, "ExposureTime", N_("Exposure Time"),
         N_("Exposure time, given in seconds (sec)."),
         { ESL_NNNN, ESL_NNNN, ESL_OOOO, ESL_NNNN, ESL_NNNN } },