sdk/1.0/docs/man/clGetImageInfo.xml

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<refentry>
    <refentryinfo>
        <keywordset>
            <keyword>         
                clGetImageInfo
            </keyword>
        </keywordset>
    </refentryinfo>

    <refmeta>
        <refentrytitle>       
            clGetImageInfo
        </refentrytitle>

        <refmiscinfo>
            <copyright>
                <year>2007-2009</year>
                <holder>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
the condition that this copyright notice and permission notice shall be included
in all copies or substantial portions of the Materials.</holder>
            </copyright>
        </refmiscinfo>
        <manvolnum>2</manvolnum>
  
    </refmeta>


<!-- ================================ SYNOPSIS -->  

    <refnamediv id="clGetImageInfo">
        <refname>     
            clGetImageInfo
        </refname> 

        <refpurpose>          
            Enqueues a command to map a region of a buffer object into the host address space and returns a pointer to this mapped region. 
        </refpurpose> 
    </refnamediv> 

    <refsynopsisdiv xmlns:xlink="http://www.w3.org/1999/xlink"><title></title>
        <funcsynopsis>
            <funcprototype>
                <funcdef>              
                    <link xlink:href="scalarDataTypes.html">cl_int</link> * <function>clGetImageInfo</function>
                </funcdef>
					<paramdef><link xlink:href="abstractDataTypes.html">cl_mem</link><parameter>image</parameter></paramdef>
					<paramdef><link xlink:href="enums.html#cl_image_info">cl_image_info</link><parameter>param_name</parameter></paramdef>
					<paramdef><link xlink:href="scalarDataTypes.html">size_t</link><parameter>param_value_size</parameter></paramdef>
					<paramdef><link xlink:href="scalarDataTypes.html">void</link><parameter>*param_value</parameter></paramdef>
					<paramdef><link xlink:href="scalarDataTypes.html">size_t</link><parameter>*param_value_size_ret</parameter></paramdef>
            </funcprototype>
        </funcsynopsis>     
    </refsynopsisdiv>


<!-- ================================ PARAMETERS --> 

    <refsect1 id="parameters">
        <title>Parameters</title>
        <variablelist>


            <varlistentry>
                <term>
                    <varname>
						image
                    </varname>
                </term>

                <listitem>
                    <para> 
						Specifies the image object being queried.
                    </para>
               </listitem>
            </varlistentry>

            <varlistentry>
                <term>
                    <varname>
						param_name
                    </varname>
                </term>

                <listitem>
                    <para>
						Specifies the information to query. The list of supported <varname>param_name</varname> types and the
						information returned in <varname>param_value</varname> by <function>clGetImageInfo</function> is described in the table below.
                    </para>
               </listitem>
            </varlistentry>
			
            <varlistentry>
                <term>
                    <varname>
						param_value
					</varname>
				</term>
				
				<listitem>
					<para>
						A pointer to memory where the appropriate result being queried is returned. If <varname>param_value</varname> is NULL, it is ignored.
					</para>
				</listitem>
			</varlistentry>

            <varlistentry>
                <term>
                    <varname>
						param_value_size
					</varname>
				</term>
				
				<listitem>
					<para>
						Used to specify the size in bytes of memory pointed to by <varname>param_value</varname>.
						This size must be greater than or equal to size of return type as described in the table below.
                    </para>
					    <informaltable frame="all">
                        <tgroup cols="3" align="left" colsep="1" rowsep="1">
                            <colspec colname="col1" colnum="1" />
                            <colspec colname="col2" colnum="2" />
							<colspec colname="col3" colnum="3" />
                            <thead>
                                <row>
                                    <entry>cl_image_info</entry>
                                    <entry>Return Type</entry>
									<entry>Info. returned in  <varname>param_value</varname></entry>
                                </row>
                            </thead>
                            <tbody>
        
                                <row>
                                    <entry><constant>CL_IMAGE_FORMAT</constant></entry>
                                    <entry>cl_image_format</entry>
									<entry>
										Return image format descriptor specified when
										<varname>image</varname> is created with <citerefentry><refentrytitle>clCreateImage2D</refentrytitle></citerefentry> or <citerefentry><refentrytitle>clCreateImage3D</refentrytitle></citerefentry>.
                                    </entry>
                                </row>
        
                                <row>
                                    <entry><constant>CL_IMAGE_ELEMENT_SIZE</constant></entry>
									<entry>size_t</entry>
                                    <entry>
										Return size of each element of the image
										memory object given by <varname>image</varname>. An element is
										made up of <varname>n</varname> channels. The value of <varname>n</varname> is given
										in <varname>cl_image_format</varname> descriptor.
									</entry>
                                </row>
        
                                <row>
                                    <entry><constant>CL_IMAGE_ROW_PITCH</constant></entry>
                                    <entry>size_t</entry>
									<entry>
										Return size in bytes of a row of elements of the
										image object given by <varname>image</varname>.
									</entry>
                                </row>
								        
                                <row>
                                    <entry><constant>CL_IMAGE_SLICE_PITCH</constant></entry>
                                    <entry>size_t</entry>
									<entry>
										Return size in bytes of a 2D slice for the 3D
										image object given by <varname>image</varname>. For a 2D image
										object this value will be 0.
									</entry>
                                </row>
																        
                                <row>
                                    <entry><constant>CL_IMAGE_WIDTH</constant></entry>
                                    <entry>size_t</entry>
									<entry>
										Return width of image in pixels.
									</entry>
                                </row>								        
                                <row>
                                    <entry><constant>CL_IMAGE_HEIGHT</constant></entry>
                                    <entry>size_t</entry>
									<entry>
										Return height of image in pixels.
									</entry>
                                </row>								        
                                <row>
                                    <entry><constant>CL_IMAGE_DEPTH</constant></entry>
                                    <entry>size_t</entry>
									<entry>
										Return depth of the image in pixels. For a 2D
										image, depth equals 0.
									</entry>
                                </row>
                            </tbody>    
                        </tgroup>
                    </informaltable> 
               </listitem>
            </varlistentry>

            <varlistentry>
                <term>
                    <varname>
						param_value_size_ret
					</varname>
				</term>
				
				<listitem>
					<para>
						the actual size in bytes of data being queried by <varname>param_value</varname>. If <varname>param_value_size_ret</varname> is NULL, it is ignored.
					</para>
				</listitem>
			</varlistentry>	

        </variablelist>
    </refsect1>

    
<!-- ================================ NOTES  -->        
 


    

<!-- ================================ ERRORS  -->       


    <refsect1 id="errors"><title>Errors</title>
        <para>
			<function>clGetImageInfo</function> returns <errorname>CL_SUCCESS</errorname> if the function is executed successfully, returns <errorname>CL_INVALID_VALUE</errorname> if <varname>param_name</varname> is not valid, or if size in bytes specified by <varname>param_value_size</varname> is less than the size of return type as described in the table above and <varname>param_value</varname> is not NULL, and returns <errorname>CL_INVALID_MEM_OBJECT</errorname> if <varname>image</varname> is a not a valid image object.
		</para>

    </refsect1>
    

<!-- ================================ EXAMPLE  -->  
<!-- DO NOT DELETE IN CASE AN EXAMPLE IS ADDED IN THE FUTURE -->
<!--    
    <refsect2 id="example1">
        <title>
            Example
        </title>

        <informaltable frame="none">
            <tgroup cols="1" align="left" colsep="0" rowsep="0">
                <colspec colname="col1" colnum="1" />
                <tbody>
                    <row>
                        <entry>
                            Example goes here - it will be set in "code" type with white space preserved.
                        </entry>
                    </row>
                </tbody>
            </tgroup>
        </informaltable>   
    </refsect2>  
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<!-- ================================ SPECIFICATION  -->        
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-->     
    <refsect1 id="specification"><title>Specification</title>
        <para>
            <imageobject>
                <imagedata fileref="pdficon_small1.gif" format="gif" />
            </imageobject>
			
				      
            <olink uri="clGetImageInfo">OpenCL Specification</olink>
        </para>
    </refsect1>     


<!-- ================================ ALSO SEE  -->     
   

    <refsect1 id="seealso"><title>Also see</title>
        <para>
            <citerefentry><refentrytitle>clGetMemObjectInfo</refentrytitle></citerefentry>
        </para>
    </refsect1>

<!-- ================================ COPYRIGHT  -->  
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    <refsect3 id="Copyright"><title></title>
		<imageobject>
                <imagedata fileref="KhronosLogo.jpg" format="jpg" />
        </imageobject>
		<para />
    </refsect3>

</refentry>