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TIFF and LibTiff Mail List Archive

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2012.03.15 17:54 "Re: [Tiff] RFC3949 TIFF-FX support", by Frank Warmerdam
2012.03.15 16:03 "[Tiff] RFC3949 TIFF-FX support", by Steve Underwood
2012.03.15 18:09 "Re: [Tiff] RFC3949 TIFF-FX support", by Bob Friesenhahn
2012.03.16 00:37 "Re: [Tiff] RFC3949 TIFF-FX support", by Steve Underwood
2012.03.16 03:27 "Re: [Tiff] RFC3949 TIFF-FX support", by Lee Howard
2012.03.16 14:19 "Re: [Tiff] RFC3949 TIFF-FX support", by Bob Friesenhahn

2012.03.15 17:54 "Re: [Tiff] RFC3949 TIFF-FX support", by Frank Warmerdam

Steve,

I would suggest submitting a patch via a ticket.

Can these fields be safely merged into the static TIFFField tiffFields[] array in tif_dirinfo.c? Are there any conflicts with normal definitions?

Are there sample files I can use for testing?

It seems we have had TIFF-FX discussions before and they went no where for some reason, but I don't recall any details.

Best regards,

Frank

On Thu, Mar 15, 2012 at 9:03 AM, Steve Underwood <steveu@coppice.org> wrote:

> Hi,
>

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

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

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

>
> Regards,
> Steve
>
>
>

> #define TIFFTAG_INDEXED                 346
> #define 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     COMPRESSION_T85             9
> #define     COMPRESSION_T43             10
>
>
> /* TIFF-FX related extensions to the tag set supported by libtiff */
> static const TIFFFieldInfo tiff_fx_tiff_field_info[] =
> {
>     {TIFFTAG_INDEXED, 1, 1, TIFF_SHORT, FIELD_CUSTOM, FALSE, FALSE,
> (char *) "Indexed"},
>     {TIFFTAG_GLOBALPARAMETERSIFD, 1, 1, TIFF_LONG, FIELD_CUSTOM, FALSE,
> FALSE, (char *) "GlobalParametersIFD"},
>     {TIFFTAG_PROFILETYPE, 1, 1, TIFF_LONG, FIELD_CUSTOM, FALSE, FALSE,
> (char *) "ProfileType"},
>     {TIFFTAG_FAXPROFILE, 1, 1, TIFF_BYTE, FIELD_CUSTOM, FALSE, FALSE,
> (char *) "FaxProfile"},
>     {TIFFTAG_CODINGMETHODS, 1, 1, TIFF_LONG, FIELD_CUSTOM, FALSE,
> FALSE, (char *) "CodingMethods"},
>     {TIFFTAG_VERSIONYEAR, 4, 4, TIFF_BYTE, FIELD_CUSTOM, FALSE, FALSE,
> (char *) "VersionYear"},
>     {TIFFTAG_MODENUMBER, 1, 1, TIFF_BYTE, FIELD_CUSTOM, FALSE, FALSE,
> (char *) "ModeNumber"},
>     {TIFFTAG_DECODE, TIFF_VARIABLE, TIFF_VARIABLE, TIFF_SRATIONAL,
> FIELD_CUSTOM, FALSE, FALSE, (char *) "Decode"},
>     {TIFFTAG_IMAGEBASECOLOR, TIFF_SPP, TIFF_SPP, TIFF_SHORT,
> FIELD_CUSTOM, FALSE, FALSE, (char *) "ImageBaseColor"},
>     {TIFFTAG_T82OPTIONS, 1, 1, TIFF_LONG, FIELD_CUSTOM, FALSE, FALSE,
> (char *) "T82Options"},

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

>     {TIFFTAG_IMAGELAYER, 2, 2, TIF