82 lines
3.0 KiB
Plaintext
82 lines
3.0 KiB
Plaintext
.\" $Id: TIFFReadTile.3tiff,v 1.1 2004-11-11 14:39:16 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 TIFFReadTile 3TIFF "December 16, 1991" "libtiff"
|
|
.SH NAME
|
|
TIFFReadTile \- read and decode a tile of data from an open
|
|
.SM TIFF
|
|
file
|
|
.SH SYNOPSIS
|
|
.B "#include <tiffio.h>"
|
|
.sp
|
|
.BI "tsize_t TIFFReadTile(TIFF *" tif ", tdata_t " buf ", uint32 " x ", uint32 " y ", uint32 " z ", tsample_t " sample ")"
|
|
.SH DESCRIPTION
|
|
Return the data for the tile
|
|
.I containing
|
|
the specified coordinates. The data placed in
|
|
.I buf
|
|
are returned decompressed and, typically, in the native byte- and
|
|
bit-ordering, but are otherwise packed (see further below). The buffer must be
|
|
large enough to hold an entire tile of data. Applications should call the
|
|
routine
|
|
.IR TIFFTileSize
|
|
to find out the size (in bytes) of a tile buffer. The
|
|
.I x
|
|
and
|
|
.I y
|
|
parameters are always used by
|
|
.IR TIFFReadTile .
|
|
The
|
|
.I z
|
|
parameter is used if the image is deeper than 1 slice (\c
|
|
.IR ImageDepth >1).
|
|
The
|
|
.I sample
|
|
parameter is used only if data are organized in separate planes (\c
|
|
.IR PlanarConfiguration =2).
|
|
.SH NOTES
|
|
The library attempts to hide bit- and byte-ordering differences between the
|
|
image and the native machine by converting data to the native machine order.
|
|
Bit reversal is done if the
|
|
.I FillOrder
|
|
tag is opposite to the native machine bit order. 16- and 32-bit samples are
|
|
automatically byte-swapped if the file was written with a byte order opposite
|
|
to the native machine byte order,
|
|
.SH "RETURN VALUES"
|
|
.IR TIFFReadTile
|
|
returns \-1 if it detects an error; otherwise the number of bytes in the
|
|
decoded tile is returned.
|
|
.SH DIAGNOSTICS
|
|
All error messages are directed to the
|
|
.IR TIFFError (3TIFF)
|
|
routine.
|
|
.SH "SEE ALSO"
|
|
.IR libtiff (3TIFF),
|
|
.IR TIFFCheckTile (3TIFF),
|
|
.IR TIFFComputeTile (3TIFF),
|
|
.IR TIFFOpen (3TIFF),
|
|
.IR TIFFReadEncodedTile (3TIFF),
|
|
.IR TIFFReadRawTile (3TIFF)
|