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| <p>sub device info Sub-device is the concept basing on the "device" behind "vaDisplay". If a device could be divided to several sub devices, the task of decode/encode/vpp could be assigned on one sub-device. So, application could choose the sub device before any other operations. After that, all of the task execution/resource allocation will be dispatched to the sub device. If application does not choose the sub device, driver will assign one as default. |
| <a href="unionVADisplayAttribValSubDevice.html#details">More...</a></p> |
| |
| <p><code>#include <<a class="el" href="va_8h_source.html">va.h</a>></code></p> |
| <a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2> |
| <div class="textblock"><p>sub device info Sub-device is the concept basing on the "device" behind "vaDisplay". If a device could be divided to several sub devices, the task of decode/encode/vpp could be assigned on one sub-device. So, application could choose the sub device before any other operations. After that, all of the task execution/resource allocation will be dispatched to the sub device. If application does not choose the sub device, driver will assign one as default. </p> |
| <p>If the value == VA_ATTRIB_NOT_SUPPORTED, it mean that the attribute is unsupport or UNKNOWN. </p> |
| </div><h2 class="groupheader">Member Data Documentation</h2> |
| <a id="a30da8e514e1d9018b67b936595e1e647"></a> |
| <h2 class="memtitle"><span class="permalink"><a href="#a30da8e514e1d9018b67b936595e1e647">◆ </a></span>sub_device_mask</h2> |
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| <td class="memname">uint32_t VADisplayAttribValSubDevice::sub_device_mask</td> |
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| <p>bit mask to indicate which sub_device is available, read only </p> |
| <div class="fragment"><div class="line"> <a class="code" href="unionVADisplayAttribValSubDevice.html">VADisplayAttribValSubDevice</a> reg;</div><div class="line"> VADisplayAttribute reg_attr;</div><div class="line"> reg_attr.type = VADisplayAttribSubDevice;</div><div class="line"> <a class="code" href="va_8h.html#a2ad3b148d5eedeb8b5a23fb97dc2df3c">vaGetDisplayAttributes</a>(dpy, &reg_attr, 1);</div><div class="line"> reg.value = reg_attr.value;</div><div class="line"></div><div class="line"> <span class="keywordflow">for</span>(<span class="keywordtype">int</span> i = 0; i < reg.bits.<a class="code" href="unionVADisplayAttribValSubDevice.html#a079d51559ef84ae51ca74a1a63cdfa48">sub_device_count</a>; i ++ ){</div><div class="line"> <span class="keywordflow">if</span>((1<<i) & reg.bits.<a class="code" href="unionVADisplayAttribValSubDevice.html#a30da8e514e1d9018b67b936595e1e647">sub_device_mask</a>){</div><div class="line"> printf(<span class="stringliteral">"sub device %d can be selected"</span>, i);</div><div class="line"> }</div><div class="line">}</div></div><!-- fragment --> |
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| <hr/>The documentation for this union was generated from the following file:<ul> |
| <li><a class="el" href="va_8h_source.html">va.h</a></li> |
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