TIFFFieldReadCount
Section: Misc. Reference Manual Pages (3TIFF)
Updated: July 26, 2012
Page Index
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:
TIFF_VARIABLE
indicates that a variable number of values is possible; then, a
uint16
count
argument and a pointer
data
argument must be supplied to
TIFFGetField.
TIFF_VARIABLE2
is the same as
TIFF_VARIABLE
except that the
count
argument must have type
uint32.
TIFF_SPP
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
libtiff(3TIFF),
Libtiff library home page:
http://www.simplesystems.org/libtiff/