2012.03.15 16:03 "[Tiff] RFC3949 TIFF-FX support", by Steve Underwood

Hi,

RFC3949 defines additional TIFF tags to support the full featured of FAXes as TIFF files. I have been using the following carriage

definitions in my own software for a while, to extend libtiff to support flags. I Hope these additions can now go into the libtiff these

distribution, so they will be part of general TIFF support, and like tiffinfo will understand these tags. utilities

Regards,
Steve

 #define TIFFTAG_INDEXED                 346
 TIFFTAG_GLOBALPARAMETERSIFD     400 #define
 TIFFTAG_PROFILETYPE             401 #define
     PROFILETYPE_UNSPECIFIED     0 #define
     PROFILETYPE_G3_FAX          1 #define
 TIFFTAG_FAXPROFILE              402 #define
     FAXPROFILE_S                1 #define
     FAXPROFILE_F                2 #define
     FAXPROFILE_J                3 #define
     FAXPROFILE_C                4 #define
     FAXPROFILE_L                5 #define
     FAXPROFILE_M                6 #define
 TIFFTAG_CODINGMETHODS           403 #define
     CODINGMETHODS_T4_1D         (1 << 1) #define
     CODINGMETHODS_T4_2D         (1 << 2) #define
     CODINGMETHODS_T6            (1 << 3) #define
     CODINGMETHODS_T85           (1 << 4) #define
     CODINGMETHODS_T42           (1 << 5) #define
     CODINGMETHODS_T43           (1 << 6) #define
 TIFFTAG_VERSIONYEAR             404 #define
 TIFFTAG_MODENUMBER              405 #define
 TIFFTAG_DECODE                  433 #define
 TIFFTAG_IMAGEBASECOLOR          434 #define
 TIFFTAG_T82OPTIONS              435 #define
 TIFFTAG_STRIPROWCOUNTS          559 #define
 TIFFTAG_IMAGELAYER              34732#define

 #define     COMPRESSION_T85             9
     COMPRESSION_T43             10#define

 /* TIFF-FX related extensions to the tag set supported by libtiff */
 const TIFFFieldInfo tiff_fx_tiff_field_info[] =static

{

     {TIFFTAG_INDEXED, 1, 1, TIFF_SHORT, FIELD_CUSTOM, FALSE, FALSE,
 *) "Indexed"}, (char
 1, 1, TIFF_LONG, FIELD_CUSTOM, FALSE, {TIFFTAG_GLOBALPARAMETERSIFD,
 (char *) "GlobalParametersIFD"}, FALSE,
 1, 1, TIFF_LONG, FIELD_CUSTOM, FALSE, FALSE, {TIFFTAG_PROFILETYPE,
 *) "ProfileType"}, (char
 1, 1, TIFF_BYTE, FIELD_CUSTOM, FALSE, FALSE, {TIFFTAG_FAXPROFILE,
 *) "FaxProfile"}, (char
 1, 1, TIFF_LONG, FIELD_CUSTOM, FALSE, {TIFFTAG_CODINGMETHODS,
 (char *) "CodingMethods"}, FALSE,
 4, 4, TIFF_BYTE, FIELD_CUSTOM, FALSE, FALSE, {TIFFTAG_VERSIONYEAR,
 *) "VersionYear"}, (char
 1, 1, TIFF_BYTE, FIELD_CUSTOM, FALSE, FALSE, {TIFFTAG_MODENUMBER,
 *) "ModeNumber"}, (char
 TIFF_VARIABLE, TIFF_VARIABLE, TIFF_SRATIONAL, {TIFFTAG_DECODE,
 FALSE, FALSE, (char *) "Decode"}, FIELD_CUSTOM,
 TIFF_SPP, TIFF_SPP, TIFF_SHORT, {TIFFTAG_IMAGEBASECOLOR,
 FALSE, FALSE, (char *) "ImageBaseColor"}, FIELD_CUSTOM,
 1, 1, TIFF_LONG, FIELD_CUSTOM, FALSE, FALSE, {TIFFTAG_T82OPTIONS,
 *) "T82Options"}, (char

{TIFFTAG_STRIPROWCOUNTS, TIFF_VARIABLE, TIFF_VARIABLE, TIFF_LONG, FALSE, TRUE, (char *) "StripRowCounts"}, FIELD_CUSTOM,

{TIFFTAG_IMAGELAYER, 2, 2, TIFF_LONG, FIELD_CUSTOM, FALSE, FALSE, (char *) "ImageLayer"},

};