TIFFFIELDREADCOUNT(3tiff)           LibTIFF          TIFFFIELDREADCOUNT(3tiff)

NAME
       TIFFFieldReadCount - get number of values to be read from field

SYNOPSIS

          #include <tiffio.h>

       int TIFFFieldReadCount(const TIFFField *fip)

DESCRIPTION
       TIFFFieldReadCount() returns the number of values available to be read
       from the specified TIFF field; that is, the number of arguments that
       should be supplied to TIFFGetField().  For most field types this is a
       small positive integer, typically 1 or 2, but there are some special
       values:

       o TIFF_VARIABLE = -1 indicates that a variable number of values is
         possible; then, a uint16_t count argument and a pointer data argument
         must be supplied to TIFFGetField().

       o TIFF_VARIABLE2 = -3 is the same as TIFF_VARIABLE except that the
         count argument must have type uint32_t.

       o TIFF_SPP = -2 indicates that the number of arguments is equal to the
         image's number of samples per pixel.

       fip is a field information pointer previously returned by
       TIFFFindField(), TIFFFieldWithTag(), or TIFFFieldWithName().

RETURN VALUES
       TIFFFieldReadCount() returns an integer.

SEE ALSO
       TIFFFieldDataType (3tiff), TIFFFieldName (3tiff), TIFFFieldPassCount
       (3tiff), TIFFFieldQuery (3tiff), TIFFFieldTag (3tiff),
       TIFFFieldWriteCount (3tiff), libtiff (3tiff)

AUTHOR
       LibTIFF contributors

COPYRIGHT
       1988-2022, LibTIFF contributors

4.6                            September 8, 2023     TIFFFIELDREADCOUNT(3tiff)