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<title>clGetImageInfo</title>
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<meta name="keywords" content=" &#10; clGetImageInfo&#10; " />
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<body>
<div class="refentry">
<a id="idm1"></a>
<div class="titlepage"></div>
<div xmlns="" class="refnamediv">
<a xmlns="http://www.w3.org/1999/xhtml" id="clGetImageInfo"></a>
<h1>
clGetImageInfo
</h1>
<p>
Enqueues a command to map a region of a buffer object into the host address space and returns a pointer to this mapped region.
</p>
</div>
<div class="refsynopsisdiv">
<h2></h2>
<div class="funcsynopsis">
<table xmlns="" border="0" summary="Function synopsis" cellspacing="0" cellpadding="0">
<tr valign="bottom">
<td>
<code xmlns="http://www.w3.org/1999/xhtml" class="funcdef">
<a class="link" href="scalarDataTypes.html" target="_top">cl_int</a> * <strong class="fsfunc">clGetImageInfo</strong>
(</code>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="abstractDataTypes.html" target="_top">cl_mem</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">image</var>, </td>
</td>
</tr>
<tr valign="top">
<td> </td>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="enums.html#cl_image_info" target="_top">cl_image_info</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">param_name</var>, </td>
</tr>
<tr valign="top">
<td> </td>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">param_value_size</var>, </td>
</tr>
<tr valign="top">
<td> </td>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">void</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*param_value</var>, </td>
</tr>
<tr valign="top">
<td> </td>
<td><a xmlns="http://www.w3.org/1999/xhtml" class="link" href="scalarDataTypes.html" target="_top">size_t</a> <var xmlns="http://www.w3.org/1999/xhtml" class="pdparam">*param_value_size_ret</var><code>)</code></td>
</tr>
</table>
</div>
</div>
<div class="refsect1">
<a id="parameters"></a>
<h2>Parameters</h2>
<div class="variablelist">
<dl class="variablelist">
<dt>
<span class="term">
<code class="varname">
image
</code>
</span>
</dt>
<dd>
<p>
Specifies the image object being queried.
</p>
</dd>
<dt>
<span class="term">
<code class="varname">
param_name
</code>
</span>
</dt>
<dd>
<p>
Specifies the information to query. The list of supported <code class="varname">param_name</code> types and the
information returned in <code class="varname">param_value</code> by <code class="function">clGetImageInfo</code> is described in the table below.
</p>
</dd>
<dt>
<span class="term">
<code class="varname">
param_value
</code>
</span>
</dt>
<dd>
<p>
A pointer to memory where the appropriate result being queried is returned. If <code class="varname">param_value</code> is NULL, it is ignored.
</p>
</dd>
<dt>
<span class="term">
<code class="varname">
param_value_size
</code>
</span>
</dt>
<dd>
<p>
Used to specify the size in bytes of memory pointed to by <code class="varname">param_value</code>.
This size must be greater than or equal to size of return type as described in the table below.
</p>
<div class="informaltable">
<table class="informaltable" border="1">
<colgroup>
<col align="left" class="col1" />
<col align="left" class="col2" />
<col align="left" class="col3" />
</colgroup>
<thead>
<tr>
<th align="left">cl_image_info</th>
<th align="left">Return Type</th>
<th align="left">Info. returned in <code class="varname">param_value</code></th>
</tr>
</thead>
<tbody>
<tr>
<td align="left">
<code class="constant">CL_IMAGE_FORMAT</code>
</td>
<td align="left">cl_image_format</td>
<td align="left">
Return image format descriptor specified when
<code class="varname">image</code> is created with <a class="citerefentry" href="clCreateImage2D.html"><span class="citerefentry"><span class="refentrytitle">clCreateImage2D</span></span></a> or <a class="citerefentry" href="clCreateImage3D.html"><span class="citerefentry"><span class="refentrytitle">clCreateImage3D</span></span></a>.
</td>
</tr>
<tr>
<td align="left">
<code class="constant">CL_IMAGE_ELEMENT_SIZE</code>
</td>
<td align="left">size_t</td>
<td align="left">
Return size of each element of the image
memory object given by <code class="varname">image</code>. An element is
made up of <code class="varname">n</code> channels. The value of <code class="varname">n</code> is given
in <code class="varname">cl_image_format</code> descriptor.
</td>
</tr>
<tr>
<td align="left">
<code class="constant">CL_IMAGE_ROW_PITCH</code>
</td>
<td align="left">size_t</td>
<td align="left">
Return size in bytes of a row of elements of the
image object given by <code class="varname">image</code>.
</td>
</tr>
<tr>
<td align="left">
<code class="constant">CL_IMAGE_SLICE_PITCH</code>
</td>
<td align="left">size_t</td>
<td align="left">
Return size in bytes of a 2D slice for the 3D
image object given by <code class="varname">image</code>. For a 2D image
object this value will be 0.
</td>
</tr>
<tr>
<td align="left">
<code class="constant">CL_IMAGE_WIDTH</code>
</td>
<td align="left">size_t</td>
<td align="left">
Return width of image in pixels.
</td>
</tr>
<tr>
<td align="left">
<code class="constant">CL_IMAGE_HEIGHT</code>
</td>
<td align="left">size_t</td>
<td align="left">
Return height of image in pixels.
</td>
</tr>
<tr>
<td align="left">
<code class="constant">CL_IMAGE_DEPTH</code>
</td>
<td align="left">size_t</td>
<td align="left">
Return depth of the image in pixels. For a 2D
image, depth equals 0.
</td>
</tr>
</tbody>
</table>
</div>
</dd>
<dt>
<span class="term">
<code class="varname">
param_value_size_ret
</code>
</span>
</dt>
<dd>
<p>
the actual size in bytes of data being queried by <code class="varname">param_value</code>. If <code class="varname">param_value_size_ret</code> is NULL, it is ignored.
</p>
</dd>
</dl>
</div>
</div>
<div class="refsect1">
<a id="errors"></a>
<h2>Errors</h2>
<p>
<code class="function">clGetImageInfo</code> returns <span class="errorname">CL_SUCCESS</span> if the function is executed successfully, returns <span class="errorname">CL_INVALID_VALUE</span> if <code class="varname">param_name</code> is not valid, or if size in bytes specified by <code class="varname">param_value_size</code> is less than the size of return type as described in the table above and <code class="varname">param_value</code> is not NULL, and returns <span class="errorname">CL_INVALID_MEM_OBJECT</span> if <code class="varname">image</code> is a not a valid image object.
</p>
</div>
<div class="refsect1">
<a id="specification"></a>
<h2>Specification</h2>
<p>
<img src="pdficon_small1.gif" />
<a href="http://www.khronos.org/registry/cl/specs/opencl-1.0.pdf#page=84" target="OpenCL Spec">OpenCL Specification</a>
</p>
</div>
<div class="refsect1">
<a id="seealso"></a>
<h2>Also see</h2>
<p>
<a class="citerefentry" href="clGetMemObjectInfo.html"><span class="citerefentry"><span class="refentrytitle">clGetMemObjectInfo</span></span></a>
</p>
</div>
<div xmlns="" class="refsect3" lang="en" xml:lang="en"><a xmlns="http://www.w3.org/1999/xhtml" id="Copyright"></a><h4 xmlns="http://www.w3.org/1999/xhtml"></h4><img xmlns="http://www.w3.org/1999/xhtml" src="KhronosLogo.jpg" /><p xmlns="http://www.w3.org/1999/xhtml"></p>Copyright © 2007-2009 The Khronos Group Inc.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and/or associated documentation files (the
"Materials"), to deal in the Materials without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Materials, and to
permit persons to whom the Materials are furnished to do so, subject to
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