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| author | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2015-11-06 05:38:49 +0100 |
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| committer | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2015-11-06 05:38:49 +0100 |
| commit | 9491825ddff7a294d1f49061bae7044e426aeb2e (patch) | |
| tree | 06e651099f87140ec534ae47fb8ce1ac6ec7976d /tiff/html/man/TIFFReadRGBAStrip.3tiff.html | |
| parent | fa756339d4204bff7f2820067f58214d32780d17 (diff) | |
Imported Upstream version 1.8.3
Diffstat (limited to 'tiff/html/man/TIFFReadRGBAStrip.3tiff.html')
| -rwxr-xr-x | tiff/html/man/TIFFReadRGBAStrip.3tiff.html | 208 |
1 files changed, 208 insertions, 0 deletions
diff --git a/tiff/html/man/TIFFReadRGBAStrip.3tiff.html b/tiff/html/man/TIFFReadRGBAStrip.3tiff.html new file mode 100755 index 0000000..37d36d3 --- /dev/null +++ b/tiff/html/man/TIFFReadRGBAStrip.3tiff.html @@ -0,0 +1,208 @@ +<!-- Creator : groff version 1.18.1 --> +<!-- CreationDate: Sat Feb 24 18:37:17 2007 --> +<html> +<head> +<meta name="generator" content="groff -Thtml, see www.gnu.org"> +<meta name="Content-Style" content="text/css"> +<title>TIFFReadRGBAStrip</title> +</head> +<body> + +<h1 align=center>TIFFReadRGBAStrip</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>TIFFReadRGBAStrip − read and decode an image strip +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> +<!-- INDENTATION --> +<p><b>#define TIFFGetR(abgr) ((abgr) & 0xff)<br> +#define TIFFGetG(abgr) (((abgr) >> 8) & 0xff)<br> +#define TIFFGetB(abgr) (((abgr) >> 16) & 0xff)<br> +#define TIFFGetA(abgr) (((abgr) >> 24) & +0xff)</b></p> +<!-- INDENTATION --> +<p><b>int TIFFReadRGBAStrip(TIFF *</b><i>tif</i><b>, +uint32</b> <i>row</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>TIFFReadRGBAStrip</i> reads a single strip of a +strip-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 rowsperstrip 32-bit entries, +where width is the width of the image (TIFFTAG_IMAGEWIDTH) +and rowsperstrip is the maximum lines in a strip +(TIFFTAG_ROWSPERSTRIP).</p> +<!-- INDENTATION --> +<p>The <i>row</i> value should be the row of the first row +in the strip (strip * rowsperstrip, zero based).</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 +strip. That is bottom to top organization. When reading a +partial last strip in the file the last line of the image +will begin at the beginning of the buffer.</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>TIFFReadRGBAStrip</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 +strip. The <i>TIFFReadRGBATile()</i> function does a similar +operation for tiled 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>TIFFReadRGBATile</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> |