121 lines
3.0 KiB
HTML
121 lines
3.0 KiB
HTML
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">
|
||
|
|
<HTML><HEAD><TITLE>Manpage of TIFFReadTile</TITLE>
|
||
|
|
</HEAD><BODY BGCOLOR=WHITE><FONT FACE="helvetica, sans, arial">
|
||
|
|
<H1>TIFFReadTile</H1>
|
||
|
|
Section: Misc. Reference Manual Pages (3T)<BR>Updated: December 16, 1991<BR><A HREF="#index">Index</A>
|
||
|
|
<BR><A HREF="index.html">Return to Main Contents</A>
|
||
|
|
<HR>
|
||
|
|
|
||
|
|
<A NAME="lbAB"> </A>
|
||
|
|
<H2>NAME</H2>
|
||
|
|
|
||
|
|
TIFFReadTile - read and decode a tile of data from an open
|
||
|
|
<FONT SIZE="-1">TIFF</FONT>
|
||
|
|
file
|
||
|
|
<A NAME="lbAC"> </A>
|
||
|
|
<H2>SYNOPSIS</H2>
|
||
|
|
|
||
|
|
<B>#include <<A HREF="file:/usr/include/tiffio.h">tiffio.h</A>></B>
|
||
|
|
|
||
|
|
<BR>
|
||
|
|
|
||
|
|
<B>tsize_t TIFFReadTile(TIFF* tif, tdata_t buf, uint32 x, uint32 y, uint32 z, tsample_t sample)</B>
|
||
|
|
|
||
|
|
<A NAME="lbAD"> </A>
|
||
|
|
<H2>DESCRIPTION</H2>
|
||
|
|
|
||
|
|
Return the data for the tile
|
||
|
|
<I>containing</I>
|
||
|
|
|
||
|
|
the specified coordinates.
|
||
|
|
The data placed in
|
||
|
|
<I>buf</I>
|
||
|
|
|
||
|
|
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
|
||
|
|
<I>TIFFTileSize</I>
|
||
|
|
|
||
|
|
to find out the size (in bytes) of a tile buffer.
|
||
|
|
The
|
||
|
|
<I>x</I>
|
||
|
|
|
||
|
|
and
|
||
|
|
<I>y</I>
|
||
|
|
|
||
|
|
parameters are always used by
|
||
|
|
<I>TIFFReadTile</I>.
|
||
|
|
|
||
|
|
The
|
||
|
|
<I>z</I>
|
||
|
|
|
||
|
|
parameter is used if the image is deeper than 1 slice (<I>ImageDepth</I>>1).
|
||
|
|
|
||
|
|
The
|
||
|
|
<I>sample</I>
|
||
|
|
|
||
|
|
parameter is used only if data are organized in separate planes (<I>PlanarConfiguration</I>=2).
|
||
|
|
|
||
|
|
<A NAME="lbAE"> </A>
|
||
|
|
<H2>NOTES</H2>
|
||
|
|
|
||
|
|
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</I>
|
||
|
|
|
||
|
|
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,
|
||
|
|
<A NAME="lbAF"> </A>
|
||
|
|
<H2>RETURN VALUES</H2>
|
||
|
|
|
||
|
|
<I>TIFFReadTile</I>
|
||
|
|
|
||
|
|
returns -1 if it detects an error; otherwise the number of
|
||
|
|
bytes in the decoded tile is returned.
|
||
|
|
<A NAME="lbAG"> </A>
|
||
|
|
<H2>DIAGNOSTICS</H2>
|
||
|
|
|
||
|
|
All error messages are directed to the
|
||
|
|
<I><A HREF="TIFFError.3t.html">TIFFError</A></I>(3T)
|
||
|
|
|
||
|
|
routine.
|
||
|
|
<A NAME="lbAH"> </A>
|
||
|
|
<H2>SEE ALSO</H2>
|
||
|
|
|
||
|
|
<I><A HREF="libtiff.3t.html">libtiff</A></I>(3T),
|
||
|
|
|
||
|
|
<I><A HREF="TIFFCheckTile.3t.html">TIFFCheckTile</A></I>(3T),
|
||
|
|
|
||
|
|
<I><A HREF="TIFFComputeTile.3t.html">TIFFComputeTile</A></I>(3T),
|
||
|
|
|
||
|
|
<I><A HREF="TIFFOpen.3t.html">TIFFOpen</A></I>(3T),
|
||
|
|
|
||
|
|
<I><A HREF="TIFFReadEncodedTile.3t.html">TIFFReadEncodedTile</A></I>(3T),
|
||
|
|
|
||
|
|
<I><A HREF="TIFFReadRawTile.3t.html">TIFFReadRawTile</A></I>(3T)
|
||
|
|
|
||
|
|
|
||
|
|
<HR>
|
||
|
|
<A NAME="index"> </A><H2>Index</H2>
|
||
|
|
<DL>
|
||
|
|
<DT><A HREF="#lbAB">NAME</A><DD>
|
||
|
|
<DT><A HREF="#lbAC">SYNOPSIS</A><DD>
|
||
|
|
<DT><A HREF="#lbAD">DESCRIPTION</A><DD>
|
||
|
|
<DT><A HREF="#lbAE">NOTES</A><DD>
|
||
|
|
<DT><A HREF="#lbAF">RETURN VALUES</A><DD>
|
||
|
|
<DT><A HREF="#lbAG">DIAGNOSTICS</A><DD>
|
||
|
|
<DT><A HREF="#lbAH">SEE ALSO</A><DD>
|
||
|
|
</DL>
|
||
|
|
<HR>
|
||
|
|
This document was created by
|
||
|
|
<A HREF="index.html">man2html</A>,
|
||
|
|
using the manual pages.<BR>
|
||
|
|
Time: 01:31:38 GMT, November 23, 1999
|
||
|
|
</BODY>
|
||
|
|
</HTML>
|