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| <!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook MathML Module V1.1b1//EN" |
| "http://www.oasis-open.org/docbook/xml/mathml/1.1CR1/dbmathml.dtd" [ |
| <!ENTITY sharingDX9Inc SYSTEM "sharingDX9Inc.xml"> |
| ]> |
| |
| <refentry> |
| <refentryinfo> |
| <keywordset><keyword>clEnqueueAcquireDX9MediaSurfacesKHR</keyword></keywordset> |
| </refentryinfo> |
| <refmeta> |
| <refentrytitle>clEnqueueAcquireDX9MediaSurfacesKHR</refentrytitle> |
| <refmiscinfo> |
| <copyright> |
| <year>2007-2013</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>3</manvolnum> |
| </refmeta> |
| |
| <!-- ================================ SYNOPSIS --> |
| |
| <refnamediv id="clEnqueueAcquireDX9MediaSurfacesKHR"> |
| <refname>clEnqueueAcquireDX9MediaSurfacesKHR</refname> |
| <refpurpose>Acquire OpenCL memory objects that have been created from a media surface.</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>clEnqueueAcquireDX9MediaSurfacesKHR</function></funcdef> |
| |
| <paramdef><link xlink:href="abstractDataTypes.html">cl_command_queue</link> |
| <parameter>command_queue</parameter></paramdef> |
| |
| <paramdef><link xlink:href="scalarDataTypes.html">cl_uint</link> |
| <parameter>num_objects</parameter></paramdef> |
| |
| <paramdef>const <link xlink:href="abstractDataTypes.html">cl_mem</link><parameter>*mem_objects</parameter></paramdef> |
| |
| <paramdef><link xlink:href="scalarDataTypes.html">cl_uint</link><parameter>num_events_in_wait_list</parameter></paramdef> |
| |
| <paramdef> |
| const <link xlink:href="abstractDataTypes.html">cl_event</link> |
| <parameter>*event_wait_list</parameter> |
| </paramdef> |
| |
| <paramdef><link xlink:href="abstractDataTypes.html">cl_event</link><parameter>*event</parameter></paramdef> |
| </funcprototype> |
| </funcsynopsis> |
| </refsynopsisdiv> |
| |
| <!-- ================================ PARAMETERS --> |
| |
| <refsect1 id="parameters"><title>Parameters</title> |
| <variablelist> |
| |
| <varlistentry> |
| <term><varname>command_queue</varname></term> |
| <listitem> |
| <para> |
| A valid command-queue. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><varname>num_objects</varname></term> |
| <listitem> |
| <para> |
| The number of memory objects to be acquired in <varname>mem_objects</varname>. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><varname>mem_objects</varname></term> |
| <listitem> |
| <para> |
| A pointer to a list of OpenCL memory objects that were created from |
| media surfaces. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><varname>num_events_in_wait_list</varname>, <varname>event_wait_list</varname></term> |
| <listitem> |
| <para> |
| Specify events that need to complete before this particular |
| command can be executed. If <varname>event_wait_list</varname> |
| is NULL, then this particular command does not wait on any |
| event to complete. If <varname>event_wait_list</varname> is |
| NULL, <varname>num_events_in_wait_list</varname> must be 0. If |
| <varname>event_wait_list</varname> is not NULL, the list of events |
| pointed to by <varname>event_wait_list</varname> must be valid and |
| <varname>num_events_in_wait_list</varname> must be greater than 0. The events |
| specified in <varname>event_wait_list</varname> act as synchronization points. |
| </para> |
| </listitem> |
| </varlistentry> |
| |
| <varlistentry> |
| <term><varname>event</varname></term> |
| <listitem> |
| <para> |
| Returns <replaceable>n</replaceable> event object that identifies this particular |
| command and can be used to query or queue a wait for this particular command |
| to complete. <varname>event</varname> can be NULL in which case it will not |
| be possible for the application to query the status of this command or queue |
| a wait for this command to complete. |
| If the <varname>event_wait_list</varname> and the |
| <varname>event</varname> arguments are not NULL, the |
| <varname>event</varname> |
| argument should not refer to an element of the |
| <varname>event_wait_list</varname> array. |
| </para> |
| </listitem> |
| </varlistentry> </variablelist> |
| </refsect1> |
| |
| <!-- ================================ NOTES --> |
| |
| <refsect1 id="notes"><title>Notes</title> |
| <para> |
| Used to acquire OpenCL memory objects that have been created from a media |
| surface. The media surfaces are acquired by the OpenCL context associated with |
| <varname>command_queue</varname> and can therefore be used by all command-queues |
| associated with the OpenCL context. |
| </para> |
| |
| <para> |
| OpenCL memory objects created from media surfaces must be acquired before they can |
| be used by any OpenCL commands queued to a command-queue. If an OpenCL memory |
| object created from a media surface is used while it is not currently acquired |
| by OpenCL, the call attempting to use that OpenCL memory object will return |
| <errorname>CL_DX9_MEDIA_SURFACE_NOT_ACQUIRED_KHR</errorname>. |
| </para> |
| |
| <para> |
| If <constant>CL_CONTEXT_INTEROP_USER_SYNC</constant> is not |
| specified as <constant>CL_TRUE</constant> during context creation, |
| <function>clEnqueueAcquireDX9MediaSurfacesKHR</function> provides the synchronization |
| guarantee that any media adapter API calls involving the interop device(s) used in the |
| OpenCL context made before <function>clEnqueueAcquireDX9MediaSurfacesKHR</function> |
| is called will complete executing before <varname>event</varname> reports |
| completion and before the execution of any subsequent OpenCL work issued |
| in <varname>command_queue</varname> begins. If the context was created with |
| properties specifying <constant>CL_CONTEXT_INTEROP_USER_SYNC</constant> as |
| <constant>CL_TRUE</constant>, the user is responsible for guaranteeing that any |
| media adapter API calls involving the interop device(s) used in the OpenCL context |
| made before <function>clEnqueueAcquireDX9MediaSurfacesKHR</function> is called have |
| completed before calling <function>clEnqueueAcquireDX9MediaSurfacesKHR</function>. |
| </para> |
| |
| &sharingDX9Inc; |
| |
| </refsect1> |
| |
| <!-- ================================ ERRORS --> |
| |
| <refsect1 id="errors"><title>Errors</title> |
| <para> |
| Returns <errorname>CL_SUCCESS</errorname> returns <errorname>CL_SUCCESS</errorname> |
| if the function is executed successfully. If <varname>num_objects</varname> is 0 and |
| <varname>mem_objects</varname> is NULL then the function does nothing and returns |
| <errorname>CL_SUCCESS</errorname>. Otherwise it returns one of the following errors: |
| </para> |
| |
| <itemizedlist mark="disc"> |
| <listitem> |
| <errorname>CL_INVALID_VALUE</errorname> if <varname>num_objects</varname> |
| is zero and <varname>mem_objects</varname> is not a NULL value or if |
| <varname>num_objects</varname> > 0 and <varname>mem_objects</varname> is NULL. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_MEM_OBJECT</errorname> if memory objects in |
| <varname>mem_objects</varname> are not valid OpenCL memory objects or if memory |
| objects in <varname>mem_objects</varname> have not been created from media surfaces. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_COMMAND_QUEUE</errorname> if <varname>command_queue</varname> |
| is not a valid command-queue. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_CONTEXT</errorname> if context associated with |
| <varname>command_queue</varname> was not created from a device that can share |
| the media surface referenced by <varname>mem_objects</varname>. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_DX9_MEDIA_SURFACE_ALREADY_ACQUIRED_KHR</errorname> if memory |
| objects in <varname>mem_objects</varname> have previously been acquired |
| using <function>clEnqueueAcquireDX9MediaSurfacesKHR</function> |
| but have not been released using |
| <citerefentry><refentrytitle>clEnqueueReleaseDX9MediaSurfacesKHR</refentrytitle></citerefentry>. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_INVALID_EVENT_WAIT_LIST</errorname> |
| if <varname>event_wait_list</varname> is NULL and |
| <varname>num_event_in_wait_list</varname> > 0, |
| or <varname>event_wait_list</varname> is not NULL and |
| <varname>num_event_in_wait_list</varname> is 0, or if event objects in |
| <varname>event_wait_list</varname> are not valid events. |
| </listitem> |
| |
| <listitem> |
| <errorname>CL_OUT_OF_HOST_MEMORY</errorname> if there is a failure to allocate |
| resources required by the OpenCL implementation on the host. |
| </listitem> |
| |
| </itemizedlist> |
| </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> |
| --> |
| |
| <!-- ================================ SPECIFICATION --> |
| <!-- Set the "uri" attribute in the <olink /> element to the "named destination" for the PDF page |
| --> |
| |
| <refsect1 id="specification"><title>Specification</title> |
| <para><imageobject><imagedata fileref="pdficon_small1.gif" format="gif" /></imageobject> |
| <olink uri="clEnqueueAcquireDX9MediaSurfacesKHR">OpenCL Specification</olink> |
| </para> |
| </refsect1> |
| |
| <!-- ================================ ALSO SEE --> |
| |
| <refsect1 id="seealso"><title>Also see</title> |
| <para> |
| <citerefentry><refentrytitle>cl_khr_dx9_media_sharing</refentrytitle></citerefentry> |
| </para> |
| </refsect1> |
| |
| <!-- ============================== COPYRIGHT --> |
| <!-- Content included from copyright.inc.xsl --> |
| |
| <refsect3 id="Copyright"><title></title> |
| <imageobject> |
| <imagedata fileref="KhronosLogo.jpg" format="jpg" /> |
| </imageobject> |
| <para /> |
| </refsect3> |
| |
| <!-- 26-Oct-2015, Ext rev. 10 --> |
| </refentry> |
| |
