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<title>TIFFFieldWriteCount</title>

TIFFFieldWriteCount

NAME

SYNOPSIS

DESCRIPTION

RETURN VALUES

SEE ALSO

NAME

TIFFFieldWriteCount

− Get number of values to be written to field

SYNOPSIS

#include

<tiffio.h>

int

TIFFFieldWriteCount(const TIFFField*

fip)

DESCRIPTION

TIFFFieldWriteCount

returns the number of values to be written into the

specified TIFF field; that is, the number of arguments that

should be supplied to TIFFSetField. 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

TIFFSetField. 

TIFF_VARIABLE2 is the same as TIFF_VARIABLE

except that the count argument must have type

uint32. (On most modern machines, this makes no

practical difference, and the count argument can

simply be an int in either case.) 

TIFF_SPP indicates that the number of arguments must be

equal to the image’s number of samples per pixel.

fip is a

field information pointer previously returned by

TIFFFindField, TIFFFieldWithTag, or

TIFFFieldWithName.

For most field

types, TIFFFieldWriteCount returns the same value as

TIFFFieldReadCount, but there are some

exceptions.

RETURN VALUES

TIFFFieldWriteCount

returns an integer.

SEE ALSO

libtiff(3TIFF),

Libtiff library

home page: http://www.remotesensing.org/libtiff/