TIFFSetDirectory,  TIFFSetSubDirectory  - set the current directory for
   an open TIFF file


   #include <tiffio.h>

   int TIFFSetDirectory(TIFF *tif, tdir_t dirnum)
   int TIFFSetSubDirectory(TIFF *tif, uint32 diroff)


   TIFFSetDirectory changes the current directory and reads  its  contents
   with   TIFFReadDirectory.    The   parameter   dirnum   specifies   the
   subfile/directory as  an  integer  number,  with  the  first  directory
   numbered zero.

   TIFFSetSubDirectory acts like TIFFSetDirectory, except the directory is
   specified as a file offset instead of an index; this  is  required  for
   accessing subdirectories linked through a SubIFD tag.


   On  successful return 1 is returned. Otherwise, 0 is returned if dirnum
   or diroff specifies a  non-existent  directory,  or  if  an  error  was
   encountered while reading the directory's contents.


   All error messages are directed to the TIFFError(3TIFF) routine.

   %s:  Error  fetching  directory  count.  An error was encountered while
   reading the ``directory count'' field.

   %s: Error fetching directory link.   An  error  was  encountered  while
   reading the ``link value'' that points to the next directory in a file.


   TIFFCurrentDirectory(3TIFF), TIFFOpen(3TIFF), TIFFReadDirectory(3TIFF),
   TIFFWriteDirectory(3TIFF), libtiff(3TIFF)

   Libtiff library home page: http://www.simplesystems.org/libtiff/


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