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| author | Qt by Nokia <qt-info@nokia.com> | 2011-04-27 12:05:43 +0200 |
|---|---|---|
| committer | axis <qt-info@nokia.com> | 2011-04-27 12:05:43 +0200 |
| commit | 38be0d13830efd2d98281c645c3a60afe05ffece (patch) | |
| tree | 6ea73f3ec77f7d153333779883e8120f82820abe /src/3rdparty/libtiff/html/man/TIFFReadRGBATile.3tiff.html | |
Initial import from the monolithic Qt.
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Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
Diffstat (limited to 'src/3rdparty/libtiff/html/man/TIFFReadRGBATile.3tiff.html')
| -rw-r--r-- | src/3rdparty/libtiff/html/man/TIFFReadRGBATile.3tiff.html | 261 |
1 files changed, 261 insertions, 0 deletions
diff --git a/src/3rdparty/libtiff/html/man/TIFFReadRGBATile.3tiff.html b/src/3rdparty/libtiff/html/man/TIFFReadRGBATile.3tiff.html new file mode 100644 index 0000000000..ed67b83278 --- /dev/null +++ b/src/3rdparty/libtiff/html/man/TIFFReadRGBATile.3tiff.html @@ -0,0 +1,261 @@ +<!-- Creator : groff version 1.18.1 --> +<!-- CreationDate: Fri Jul 13 17:43:16 2007 --> +<html> +<head> +<meta name="generator" content="groff -Thtml, see www.gnu.org"> +<meta name="Content-Style" content="text/css"> +<title>TIFFReadRGBATile</title> +</head> +<body> + +<h1 align=center>TIFFReadRGBATile</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> +<a name="NAME"></a> +<h2>NAME</h2> +<!-- INDENTATION --> +<table width="100%" border=0 rules="none" frame="void" + cols="2" cellspacing="0" cellpadding="0"> +<tr valign="top" align="left"> +<td width="8%"></td> +<td width="91%"> +<p>TIFFReadRGBATile − read and decode an image tile +into a fixed-format raster</p> +</td> +</table> +<a name="SYNOPSIS"></a> +<h2>SYNOPSIS</h2> +<!-- INDENTATION --> +<table width="100%" border=0 rules="none" frame="void" + cols="2" cellspacing="0" cellpadding="0"> +<tr valign="top" align="left"> +<td width="8%"></td> +<td width="91%"> +<p><b>#include <tiffio.h></b></p> +</td> +</table> +<!-- TABS --> +<table width="100%" border=0 rules="none" frame="void" + cols="5" cellspacing="0" cellpadding="0"> +<tr valign="top" align="left"> +<td width="8%"></td> +<td width="-2%"> + +<p><b>#define TIFFGetR(abgr)</b></p> +</td> +<td width="25%"></td> +<td width="6%"></td> +<td width="61%"> + +<p><b>((abgr) & 0xff)</b></p> +</td> +<tr valign="top" align="left"> +<td width="8%"></td> +<td width="-2%"> + +<p><b>#define TIFFGetG(abgr)</b></p> +</td> +<td width="25%"></td> +<td width="6%"></td> +<td width="61%"> + +<p><b>(((abgr) >> 8) & 0xff)</b></p> +</td> +<tr valign="top" align="left"> +<td width="8%"></td> +<td width="-2%"> + +<p><b>#define TIFFGetB(abgr)</b></p> +</td> +<td width="25%"></td> +<td width="6%"></td> +<td width="61%"> + +<p><b>(((abgr) >> 16) & 0xff)</b></p> +</td> +<tr valign="top" align="left"> +<td width="8%"></td> +<td width="-2%"> + +<p><b>#define TIFFGetA(abgr)</b></p> +</td> +<td width="25%"></td> +<td width="6%"></td> +<td width="61%"> + +<p><b>(((abgr) >> 24) & 0xff)</b></p> +</td> +</table> +<!-- INDENTATION --> +<table width="100%" border=0 rules="none" frame="void" + cols="2" cellspacing="0" cellpadding="0"> +<tr valign="top" align="left"> +<td width="8%"></td> +<td width="91%"> +<p><b>int TIFFReadRGBATile(TIFF *</b><i>tif</i><b>, +uint32</b> <i>x</i><b>, uint32</b> <i>y</i><b>, uint32 +*</b><i>raster</i><b>)</b></p> +</td> +</table> +<a name="DESCRIPTION"></a> +<h2>DESCRIPTION</h2> +<!-- INDENTATION --> +<table width="100%" border=0 rules="none" frame="void" + cols="2" cellspacing="0" cellpadding="0"> +<tr valign="top" align="left"> +<td width="8%"></td> +<td width="91%"> +<p><i>TIFFReadRGBATile</i> reads a single tile of a +tile-based image into memory, storing the result in the user +supplied RGBA <i>raster</i>. The raster is assumed to be an +array of width times length 32-bit entries, where width is +the width of a tile (TIFFTAG_TILEWIDTH) and length is the +height of a tile (TIFFTAG_TILELENGTH).</p> +<!-- INDENTATION --> +<p>The <i>x</i> and <i>y</i> values are the offsets from the +top left corner to the top left corner of the tile to be +read. They must be an exact multiple of the tile width and +length.</p> +<!-- INDENTATION --> +<p>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 +raster origin in the <i>lower-left hand corner</i> of the +tile. That is bottom to top organization. Edge tiles which +partly fall off the image will be filled out with +appropriate zeroed areas.</p> +<!-- INDENTATION --> +<p>Raster pixels are 8-bit packed red, green, blue, alpha +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 +matting information have a constant Alpha of 1.0 (255).</p> +<!-- INDENTATION --> +<p>See the <i>TIFFRGBAImage</i>(3TIFF) page for more details +on how various image types are converted to RGBA values.</p> +</td> +</table> +<a name="NOTES"></a> +<h2>NOTES</h2> +<!-- INDENTATION --> +<table width="100%" border=0 rules="none" frame="void" + cols="2" cellspacing="0" cellpadding="0"> +<tr valign="top" align="left"> +<td width="8%"></td> +<td width="91%"> +<p>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>).</p> +<!-- INDENTATION --> +<p>Palette image colormaps that appear to be incorrectly +written as 8-bit values are automatically scaled to +16-bits.</p> +<!-- INDENTATION --> +<p><i>TIFFReadRGBATile</i> is just a wrapper around the more +general <i>TIFFRGBAImage</i>(3TIFF) facilities. It’s +main advantage over the similar <i>TIFFReadRGBAImage()</i> +function is that for large images a single buffer capable of +holding the whole image doesn’t need to be allocated, +only enough for one tile. The <i>TIFFReadRGBAStrip()</i> +function does a similar operation for stripped images.</p> +</td> +</table> +<a name="RETURN VALUES"></a> +<h2>RETURN VALUES</h2> +<!-- INDENTATION --> +<table width="100%" border=0 rules="none" frame="void" + cols="2" cellspacing="0" cellpadding="0"> +<tr valign="top" align="left"> +<td width="8%"></td> +<td width="91%"> +<p>1 is returned if the image was successfully read and +converted. Otherwise, 0 is returned if an error was +encountered.</p> +</td> +</table> +<a name="DIAGNOSTICS"></a> +<h2>DIAGNOSTICS</h2> +<!-- INDENTATION --> +<table width="100%" border=0 rules="none" frame="void" + cols="2" cellspacing="0" cellpadding="0"> +<tr valign="top" align="left"> +<td width="8%"></td> +<td width="91%"> +<p>All error messages are directed to the +<i>TIFFError</i>(3TIFF) routine.</p> +<!-- INDENTATION --> +<p><b>Sorry, can not handle %d-bit pictures</b>. The image +had <i>BitsPerSample</i> other than 1, 2, 4, 8, or 16.</p> +<!-- INDENTATION --> +<p><b>Sorry, can not handle %d-channel images</b>. The image +had <i>SamplesPerPixel</i> other than 1, 3, or 4.</p> +<!-- INDENTATION --> +<p><b>Missing needed "PhotometricInterpretation" +tag</b>. The image did not have a tag that describes how to +display the data.</p> +<!-- INDENTATION --> +<p><b>No "PhotometricInterpretation" tag, assuming +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 +assumed to be <small>RGB.</small></p> +<!-- INDENTATION --> +<p><b>No "PhotometricInterpretation" tag, assuming +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 +assumed to be a grayscale or bilevel image.</p> +<!-- INDENTATION --> +<p><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></p> +<!-- INDENTATION --> +<p><b>Missing required "Colormap" tag</b>. A +Palette image did not have a required <i>Colormap</i> +tag.</p> +<!-- INDENTATION --> +<p><b>No space for tile buffer</b>. There was insufficient +memory to allocate an i/o buffer.</p> +<!-- INDENTATION --> +<p><b>No space for strip buffer</b>. There was insufficient +memory to allocate an i/o buffer.</p> +<!-- INDENTATION --> +<p><b>Can not handle format</b>. The image has a format +(combination of <i>BitsPerSample</i>, +<i>SamplesPerPixel</i>, and +<i>PhotometricInterpretation</i>) that +<i>TIFFReadRGBAImage</i> can not handle.</p> +<!-- INDENTATION --> +<p><b>No space for B&W mapping table</b>. There was +insufficient memory to allocate a table used to map +grayscale data to <small>RGB.</small></p> +<!-- INDENTATION --> +<p><b>No space for Palette mapping table</b>. There was +insufficient memory to allocate a table used to map data to +8-bit <small>RGB.</small></p> +</td> +</table> +<a name="SEE ALSO"></a> +<h2>SEE ALSO</h2> +<!-- INDENTATION --> +<table width="100%" border=0 rules="none" frame="void" + cols="2" cellspacing="0" cellpadding="0"> +<tr valign="top" align="left"> +<td width="8%"></td> +<td width="91%"> +<p><b>TIFFOpen</b>(3TIFF), <b>TIFFRGBAImage</b>(3TIFF), +<b>TIFFReadRGBAImage</b>(3TIFF), +<b>TIFFReadRGBAStrip</b>(3TIFF), <b>libtiff</b>(3TIFF)</p> +<!-- INDENTATION --> +<p>Libtiff library home page: +<b>http://www.remotesensing.org/libtiff/</b></p> +</td> +</table> +<hr> +</body> +</html> |