$Id: TIFFFieldReadCount.3tiff,v 1.2 2016-09-25 20:05:49 bfriesen Exp $

Copyright (c) 2012, Tom Lane <tgl@sss.pgh.pa.us>

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TIFFFieldReadCount 3TIFF "July 26, 2012" "libtiff"
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/