TIFFFieldReadCount¶
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= -1indicates that a variable number of values is possible; then, auint16_tcount argument and a pointer data argument must be supplied toTIFFGetField().TIFF_VARIABLE2= -3is the same asTIFF_VARIABLEexcept that the count argument must have typeuint32_t.TIFF_SPP= -2indicates 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.