cheng/libtiff
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
bcef546262
libtiff/html/man/TIFFReadRGBAImage.3t.html

341 lines
13 KiB
HTML
Raw Normal View History

Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<html>
<head>
<meta name="generator" content="groff -Thtml, see www.gnu.org">
<meta name="Content-Style" content="text/css">
<title>TIFFReadRGBAImage</title>
</head>
<body>
<h1 align=center>TIFFReadRGBAImage</h1>
<a href="#NAME">NAME</a><br>
<a href="#SYNOPSIS">SYNOPSIS</a><br>
<a href="#DESCRIPTION">DESCRIPTION</a><br>
<a href="#NOTES">NOTES</a><br>
<a href="#RETURN VALUES">RETURN VALUES</a><br>
<a href="#DIAGNOSTICS">DIAGNOSTICS</a><br>
<a href="#SEE ALSO">SEE ALSO</a><br>
<hr>
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<!-- Creator : groff version 1.17.2 -->
*** empty log message ***
2003-12-21 16:47:11 -05:00
<!-- CreationDate: Mon Dec 22 00:39:24 2003 -->
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<a name="NAME"></a>
<h2>NAME</h2>
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<table width="100%" border=0 rules="none" frame="void"
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<td width="10%"></td><td width="90%">
TIFFReadRGBAImage - read and decode an image into a fixed-format raster</td></table>
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<a name="SYNOPSIS"></a>
<h2>SYNOPSIS</h2>
<table width="100%" border=0 rules="none" frame="void"
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
cols="2" cellspacing="0" cellpadding="0">
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<tr valign="top" align="left">
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<td width="10%"></td><td width="90%">
<b>#include &lt;tiffio.h&gt;</b></td></table>
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<tr valign="top" align="left">
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<td width="10%"></td><td width="90%">
<b>#define TIFFGetR(abgr) ((abgr) &amp; 0xff)<br>
#define TIFFGetG(abgr) (((abgr) &gt;&gt; 8) &amp; 0xff)<br>
#define TIFFGetB(abgr) (((abgr) &gt;&gt; 16) &amp; 0xff)<br>
#define TIFFGetA(abgr) (((abgr) &gt;&gt; 24) &amp;
0xff)</b></td></table>
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<td width="10%"></td><td width="90%">
<b>int TIFFReadRGBAImage(TIFF *</b><i>tif</i><b>, u_long</b>
<i>width</i><b>, u_long</b> <i>height</i><b>, u_long
*</b><i>raster</i><b>, int</b> <i>stopOnError</i><b>)<br>
int TIFFReadRGBAImageOriented(TIFF *</b><i>tif</i><b>,
u_long</b> <i>width</i><b>, u_long</b> <i>height</i><b>,
u_long *</b><i>raster</i><b>, int</b> <i>orientation</i><b>,
int</b> <i>stopOnError</i><b>)</b></td></table>
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<a name="DESCRIPTION"></a>
<h2>DESCRIPTION</h2>
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<table width="100%" border=0 rules="none" frame="void"
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<td width="10%"></td><td width="90%">
<i>TIFFReadRGBAImage</i> reads a strip- or tile-based image
into memory, storing the result in the user supplied
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<i>raster</i>. The raster is assumed to be an array of
<i>width</i> times <i>height</i> 32-bit entries, where
<i>width</i> must be less than or equal to the width of the
image (<i>height</i> may be any non-zero size). If the
raster dimensions are smaller than the image, the image data
is cropped to the raster bounds. If the raster height is
greater than that of the image, then the image data are
placed in the lower part of the raster. (Note that the
raster is assume to be organized such that the pixel at
location (<i>x</i>,<i>y</i>) is
<i>raster</i>[<i>y</i>*<i>width</i>+<i>x</i>]; with the
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
raster origin in the lower-left hand corner.)</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<i>TIFFReadRGBAImageOriented</i> works like
<i>TIFFReadRGBAImage</i> with except of that user can
specify the raster origin position with the
<i>orientation</i> parameter. Four orientations
supported:</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>ORIENTATION_TOPLEFT</b></td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td><td width="79%">
origin in top-left corner,</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>ORIENTATION_TOPRIGHT</b></td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td><td width="79%">
origin in top-right corner,</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>ORIENTATION_BOTLEFT</b></td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td><td width="79%">
origin in bottom-left corner and</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>ORIENTATION_BOTRIGHT</b></td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="21%"></td><td width="79%">
origin in bottom-right corner.</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
If you choose <b>ORIENTATION_BOTLEFT</b> result will be the
same as returned by the
<i>TIFFReadRGBAImage.</i></td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
Raster pixels are 8-bit packed red, green, blue, alpha
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
samples. The macros <i>TIFFGetR</i>, <i>TIFFGetG</i>,
<i>TIFFGetB</i>, and <i>TIFFGetA</i> should be used to
access individual samples. Images without Associated Alpha
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
matting information have a constant Alpha of 1.0
(255).</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<i>TIFFReadRGBAImage</i> converts non-8-bit images by
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
scaling sample values. Palette, grayscale, bilevel,
<small>CMYK</small> , and YCbCr images are converted to
<small>RGB</small> transparently. Raster pixels are returned
uncorrected by any colorimetry information present in the
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
directory.</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
The paramater <i>stopOnError</i> specifies how to act if an
error is encountered while reading the image. If
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<i>stopOnError</i> is non-zero, then an error will terminate
the operation; otherwise <i>TIFFReadRGBAImage</i> will
continue processing data until all the possible data in the
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
image have been requested.</td></table>
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<a name="NOTES"></a>
<h2>NOTES</h2>
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
In C++ the <i>stopOnError</i> parameter defaults to
0.</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
Samples must be either 1, 2, 4, 8, or 16 bits. Colorimetric
samples/pixel must be either 1, 3, or 4 (i.e.
<i>SamplesPerPixel</i> minus
<i>ExtraSamples</i>).</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
Palettte image colormaps that appear to be incorrectly
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
written as 8-bit values are automatically scaled to
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
16-bits.</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<i>TIFFReadRGBAImage</i> is just a wrapper around the more
general <i>TIFFRGBAImage</i>(3T) facilities.</td></table>
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<a name="RETURN VALUES"></a>
<h2>RETURN VALUES</h2>
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<table width="100%" border=0 rules="none" frame="void"
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<td width="10%"></td><td width="90%">
1 is returned if the image was successfully read and
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
converted. Otherwise, 0 is returned if an error was
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
encountered and <i>stopOnError</i> is zero.</td></table>
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<a name="DIAGNOSTICS"></a>
<h2>DIAGNOSTICS</h2>
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
All error messages are directed to the <i>TIFFError</i>(3T)
routine.</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>Sorry, can not handle %d-bit pictures</b>. The image had
<i>BitsPerSample</i> other than 1, 2, 4, 8, or
16.</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>Sorry, can not handle %d-channel images</b>. The image
had <i>SamplesPerPixel</i> other than 1, 3, or
4.</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>Missing needed &quot;PhotometricInterpretation&quot;
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
tag</b>. The image did not have a tag that describes how to
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
display the data.</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>No &quot;PhotometricInterpretation&quot; tag, assuming
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
RGB</b>. The image was missing a tag that describes how to
display it, but because it has 3 or 4 samples/pixel, it is
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
assumed to be <small>RGB.</small></td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>No &quot;PhotometricInterpretation&quot; tag, assuming
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
min-is-black</b>. The image was missing a tag that describes
how to display it, but because it has 1 sample/pixel, it is
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
assumed to be a grayscale or bilevel image.</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>No space for photometric conversion table</b>. There was
insufficient memory for a table used to convert image
samples to 8-bit <small>RGB.</small></td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>Missing required &quot;Colormap&quot; tag</b>. A Palette
image did not have a required <i>Colormap</i>
tag.</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>No space for tile buffer</b>. There was insufficient
memory to allocate an i/o buffer.</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>No space for strip buffer</b>. There was insufficient
memory to allocate an i/o buffer.</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>Can not handle format</b>. The image has a format
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
(combination of <i>BitsPerSample</i>,
<i>SamplesPerPixel</i>, and
<i>PhotometricInterpretation</i>) that
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<i>TIFFReadRGBAImage</i> can not handle.</td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>No space for B&amp;W mapping table</b>. There was
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
insufficient memory to allocate a table used to map
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
grayscale data to <small>RGB.</small></td></table>
<table width="100%" border=0 rules="none" frame="void"
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
<td width="10%"></td><td width="90%">
<b>No space for Palette mapping table</b>. There was
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
insufficient memory to allocate a table used to map data to
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
8-bit <small>RGB.</small></td></table>
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<a name="SEE ALSO"></a>
<h2>SEE ALSO</h2>
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<table width="100%" border=0 rules="none" frame="void"
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
cols="2" cellspacing="0" cellpadding="0">
<tr valign="top" align="left">
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<td width="10%"></td><td width="90%">
<i>libtiff</i>(3T), <i>TIFFOpen</i>(3T),
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<i>TIFFRGBAImage</i>(3T), <i>TIFFReadRGBAStrip</i>(3T),
TIFFReadRGBAImageOriented() added.
2003-10-03 07:18:17 -04:00
<i>TIFFReadRGBATile</i>(3T)</td></table>
Updated from the actual manual pages.
2002-10-07 09:47:36 -04:00
<hr>
</body>
</html>
Reference in New Issue Copy Permalink