150 lines
4.2 KiB
Plaintext
150 lines
4.2 KiB
Plaintext
.\" $Id: TIFFquery.3t,v 1.3 2004-10-29 11:11:23 dron Exp $
|
|
.\"
|
|
.\" Copyright (c) 1988-1997 Sam Leffler
|
|
.\" Copyright (c) 1991-1997 Silicon Graphics, Inc.
|
|
.\"
|
|
.\" Permission to use, copy, modify, distribute, and sell this software and
|
|
.\" its documentation for any purpose is hereby granted without fee, provided
|
|
.\" that (i) the above copyright notices and this permission notice appear in
|
|
.\" all copies of the software and related documentation, and (ii) the names of
|
|
.\" Sam Leffler and Silicon Graphics may not be used in any advertising or
|
|
.\" publicity relating to the software without the specific, prior written
|
|
.\" permission of Sam Leffler and Silicon Graphics.
|
|
.\"
|
|
.\" THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
|
|
.\" EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
|
|
.\" WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
|
|
.\"
|
|
.\" IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
|
|
.\" ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
|
|
.\" OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
|
|
.\" WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
|
|
.\" LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
|
|
.\" OF THIS SOFTWARE.
|
|
.\"
|
|
.if n .po 0
|
|
.TH QUERY 3T "October 29, 2004" "libtiff"
|
|
.SH NAME
|
|
TIFFCurrentRow,
|
|
TIFFCurrentStrip,
|
|
TIFFCurrentTile,
|
|
TIFFCurrentDirectory,
|
|
TIFFLastDirectory,
|
|
TIFFFileno,
|
|
TIFFFileName,
|
|
TIFFGetMode,
|
|
TIFFIsTiled,
|
|
TIFFIsByteSwapped,
|
|
TIFFIsUpSampled,
|
|
TIFFIsMSB2LSB,
|
|
TIFFGetVersion
|
|
\- query routines
|
|
.SH SYNOPSIS
|
|
.B "#include <tiffio.h>"
|
|
.sp
|
|
.BI "uint32 TIFFCurrentRow(TIFF* " tif ")"
|
|
.br
|
|
.BI "tstrip_t TIFFCurrentStrip(TIFF* " tif ")"
|
|
.br
|
|
.BI "ttile_t TIFFCurrentTile(TIFF* " tif ")"
|
|
.br
|
|
.BI "tdir_t TIFFCurrentDirectory(TIFF* " tif ")"
|
|
.br
|
|
.BI "int TIFFLastDirectory(TIFF* " tif ")"
|
|
.br
|
|
.BI "int TIFFFileno(TIFF* " tif ")"
|
|
.br
|
|
.BI "char* TIFFFileName(TIFF* " tif ")"
|
|
.br
|
|
.BI "int TIFFGetMode(TIFF* " tif ")"
|
|
.br
|
|
.BI "int TIFFIsTiled(TIFF* " tif ")"
|
|
.br
|
|
.BI "int TIFFIsByteSwapped(TIFF* " tif ")"
|
|
.br
|
|
.BI "int TIFFIsUpSampled(TIFF* " tif ")"
|
|
.br
|
|
.BI "int TIFFIsMSB2LSB(TIFF* " tif ")"
|
|
.br
|
|
.BI "const char* TIFFGetVersion(void)"
|
|
.SH DESCRIPTION
|
|
The following routines return status information about an open
|
|
.SM TIFF
|
|
file.
|
|
.PP
|
|
.IR TIFFCurrentDirectory
|
|
returns the index of the current directory (directories
|
|
are numbered starting at 0).
|
|
This number is suitable for use with the
|
|
.IR TIFFSetDirectory
|
|
routine.
|
|
.PP
|
|
.IR TIFFLastDirectory
|
|
returns a non-zero value if the current directory is the
|
|
last directory in the file;
|
|
otherwise zero is returned.
|
|
.PP
|
|
.IR TIFFCurrentRow ,
|
|
.IR TIFFCurrentStrip ,
|
|
and
|
|
.IR TIFFCurrentTile ,
|
|
return the current row, strip, and tile, respectively,
|
|
that is being read or written.
|
|
These values are updated each time a read or write is done.
|
|
.PP
|
|
.IR TIFFFileno
|
|
returns the underlying file descriptor used to access the
|
|
.SM TIFF
|
|
image in the filesystem.
|
|
.PP
|
|
.IR TIFFFileName
|
|
returns the pathname argument passed to
|
|
.IR TIFFOpen
|
|
or
|
|
.IR TIFFFdOpen .
|
|
.PP
|
|
.IR TIFFGetMode
|
|
returns the mode with which the underlying file was opened.
|
|
On
|
|
.SM UNIX
|
|
systems, this is the value passed to the
|
|
.IR open (2)
|
|
system call.
|
|
.PP
|
|
.IR TIFFIsTiled
|
|
returns a non-zero value if the image data has
|
|
a tiled organization.
|
|
Zero is returned if the image data is organized in strips.
|
|
.PP
|
|
.IR TIFFIsByteSwapped
|
|
returns a non-zero value if the image data was in a different
|
|
byte-order than the host machine.
|
|
Zero is returned if the TIFF file and local host byte-orders
|
|
are the same. Note that TIFFReadTile(), TIFFReadStrip() and
|
|
TIFFReadScanline() functions already normally perform byte
|
|
swapping to local host order if needed.
|
|
.PP
|
|
.I TIFFIsUpSampled
|
|
returns a non-zero value if image data returned through the
|
|
read interface routines is being up-sampled.
|
|
This can be useful to applications that want to calculate
|
|
I/O buffer sizes to reflect this usage (though the usual
|
|
strip and tile size routines already do this).
|
|
.PP
|
|
.I TIFFIsMSB2LSB
|
|
returns a non-zero value if the image data is being returned with
|
|
bit 0 as the most significant bit.
|
|
.PP
|
|
.IR TIFFGetVersion
|
|
returns an
|
|
.SM ASCII
|
|
string that has a version stamp for the
|
|
.SM TIFF
|
|
library software.
|
|
.SH DIAGNOSTICS
|
|
None.
|
|
.SH "SEE ALSO"
|
|
.IR libtiff (3T),
|
|
.IR TIFFOpen (3T),
|
|
.IR TIFFFdOpen (3T)
|