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<h1>a4l_descriptor Struct Reference<br>
<small>
[<a class="el" href="group__descriptor__sys.html">Descriptor Syscall API</a>]</small>
</h1><!-- doxytag: class="a4l_descriptor" --><hr><a name="_details"></a><h2>Detailed Description</h2>
Structure containing device-information useful to users.
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd>a4l_get_desc() </dd></dl>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Data Fields</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">char </td><td class="memItemRight" valign="bottom"><a class="el" href="structa4l__descriptor.html#ffd78a7d8d938720fcfc60912e384045">board_name</a> [A4L_NAMELEN]</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Board name. <a href="#ffd78a7d8d938720fcfc60912e384045"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structa4l__descriptor.html#5fd4ac44e93207aad96db25ddca7543c">nb_subd</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Subdevices count. <a href="#5fd4ac44e93207aad96db25ddca7543c"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structa4l__descriptor.html#fb81c9f016241cd70319ee5e2dd302ed">idx_read_subd</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Input subdevice index. <a href="#fb81c9f016241cd70319ee5e2dd302ed"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structa4l__descriptor.html#b9b06f5025a7e1f1028d2477eeff818e">idx_write_subd</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Output subdevice index. <a href="#b9b06f5025a7e1f1028d2477eeff818e"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structa4l__descriptor.html#b8714b06548347351e52f1125dd45c20">fd</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">File descriptor. <a href="#b8714b06548347351e52f1125dd45c20"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="structa4l__descriptor.html#8304d50fb6c9d8a82a4cdfd5155b81c3">magic</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Opaque field. <a href="#8304d50fb6c9d8a82a4cdfd5155b81c3"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structa4l__descriptor.html#52185721d04c3c0cb9247b8163ca89ec">sbsize</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Data buffer size. <a href="#52185721d04c3c0cb9247b8163ca89ec"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="structa4l__descriptor.html#2ac7f86c9ec51b44c37ef155fef155c1">sbdata</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Data buffer pointer. <a href="#2ac7f86c9ec51b44c37ef155fef155c1"></a><br></td></tr>
</table>
<hr><h2>Field Documentation</h2>
<a class="anchor" name="ffd78a7d8d938720fcfc60912e384045"></a><!-- doxytag: member="a4l_descriptor::board_name" ref="ffd78a7d8d938720fcfc60912e384045" args="[A4L_NAMELEN]" -->
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<td class="memname">char <a class="el" href="structa4l__descriptor.html#ffd78a7d8d938720fcfc60912e384045">a4l_descriptor::board_name</a>[A4L_NAMELEN] </td>
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<p>
Board name.
<p>
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</div><p>
<a class="anchor" name="5fd4ac44e93207aad96db25ddca7543c"></a><!-- doxytag: member="a4l_descriptor::nb_subd" ref="5fd4ac44e93207aad96db25ddca7543c" args="" -->
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<td class="memname">int <a class="el" href="structa4l__descriptor.html#5fd4ac44e93207aad96db25ddca7543c">a4l_descriptor::nb_subd</a> </td>
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<p>
Subdevices count.
<p>
<p>Referenced by <a class="el" href="descriptor_8c-source.html#l00430">a4l_get_chinfo()</a>, <a class="el" href="descriptor_8c-source.html#l00474">a4l_get_rnginfo()</a>, and <a class="el" href="descriptor_8c-source.html#l00393">a4l_get_subdinfo()</a>.</p>
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</div><p>
<a class="anchor" name="fb81c9f016241cd70319ee5e2dd302ed"></a><!-- doxytag: member="a4l_descriptor::idx_read_subd" ref="fb81c9f016241cd70319ee5e2dd302ed" args="" -->
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<td class="memname">int <a class="el" href="structa4l__descriptor.html#fb81c9f016241cd70319ee5e2dd302ed">a4l_descriptor::idx_read_subd</a> </td>
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<div class="memdoc">
<p>
Input subdevice index.
<p>
<p>Referenced by <a class="el" href="async_8c-source.html#l00357">a4l_async_read()</a>.</p>
</div>
</div><p>
<a class="anchor" name="b9b06f5025a7e1f1028d2477eeff818e"></a><!-- doxytag: member="a4l_descriptor::idx_write_subd" ref="b9b06f5025a7e1f1028d2477eeff818e" args="" -->
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<td class="memname">int <a class="el" href="structa4l__descriptor.html#b9b06f5025a7e1f1028d2477eeff818e">a4l_descriptor::idx_write_subd</a> </td>
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<p>
Output subdevice index.
<p>
<p>Referenced by <a class="el" href="async_8c-source.html#l00414">a4l_async_write()</a>.</p>
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</div><p>
<a class="anchor" name="b8714b06548347351e52f1125dd45c20"></a><!-- doxytag: member="a4l_descriptor::fd" ref="b8714b06548347351e52f1125dd45c20" args="" -->
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<td class="memname">int <a class="el" href="structa4l__descriptor.html#b8714b06548347351e52f1125dd45c20">a4l_descriptor::fd</a> </td>
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<p>
File descriptor.
<p>
<p>Referenced by <a class="el" href="async_8c-source.html#l00357">a4l_async_read()</a>, <a class="el" href="async_8c-source.html#l00414">a4l_async_write()</a>, <a class="el" href="descriptor_8c-source.html#l00339">a4l_close()</a>, <a class="el" href="descriptor_8c-source.html#l00364">a4l_fill_desc()</a>, <a class="el" href="async_8c-source.html#l00157">a4l_get_bufsize()</a>, <a class="el" href="async_8c-source.html#l00217">a4l_mark_bufrw()</a>, <a class="el" href="async_8c-source.html#l00301">a4l_mmap()</a>, <a class="el" href="descriptor_8c-source.html#l00297">a4l_open()</a>, <a class="el" href="async_8c-source.html#l00259">a4l_poll()</a>, <a class="el" href="async_8c-source.html#l00123">a4l_set_bufsize()</a>, <a class="el" href="async_8c-source.html#l00084">a4l_snd_cancel()</a>, <a class="el" href="async_8c-source.html#l00057">a4l_snd_command()</a>, <a class="el" href="sync_8c-source.html#l00087">a4l_snd_insn()</a>, and <a class="el" href="sync_8c-source.html#l00061">a4l_snd_insnlist()</a>.</p>
</div>
</div><p>
<a class="anchor" name="8304d50fb6c9d8a82a4cdfd5155b81c3"></a><!-- doxytag: member="a4l_descriptor::magic" ref="8304d50fb6c9d8a82a4cdfd5155b81c3" args="" -->
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<td class="memname">unsigned int <a class="el" href="structa4l__descriptor.html#8304d50fb6c9d8a82a4cdfd5155b81c3">a4l_descriptor::magic</a> </td>
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<div class="memdoc">
<p>
Opaque field.
<p>
<p>Referenced by <a class="el" href="descriptor_8c-source.html#l00364">a4l_fill_desc()</a>, <a class="el" href="range_8c-source.html#l00166">a4l_find_range()</a>, <a class="el" href="descriptor_8c-source.html#l00430">a4l_get_chinfo()</a>, <a class="el" href="descriptor_8c-source.html#l00474">a4l_get_rnginfo()</a>, <a class="el" href="descriptor_8c-source.html#l00393">a4l_get_subdinfo()</a>, and <a class="el" href="descriptor_8c-source.html#l00237">a4l_sys_desc()</a>.</p>
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<a class="anchor" name="52185721d04c3c0cb9247b8163ca89ec"></a><!-- doxytag: member="a4l_descriptor::sbsize" ref="52185721d04c3c0cb9247b8163ca89ec" args="" -->
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<td class="memname">int <a class="el" href="structa4l__descriptor.html#52185721d04c3c0cb9247b8163ca89ec">a4l_descriptor::sbsize</a> </td>
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<p>
Data buffer size.
<p>
<p>Referenced by <a class="el" href="descriptor_8c-source.html#l00237">a4l_sys_desc()</a>.</p>
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</div><p>
<a class="anchor" name="2ac7f86c9ec51b44c37ef155fef155c1"></a><!-- doxytag: member="a4l_descriptor::sbdata" ref="2ac7f86c9ec51b44c37ef155fef155c1" args="" -->
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<td class="memname">void* <a class="el" href="structa4l__descriptor.html#2ac7f86c9ec51b44c37ef155fef155c1">a4l_descriptor::sbdata</a> </td>
</tr>
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<div class="memdoc">
<p>
Data buffer pointer.
<p>
<p>Referenced by <a class="el" href="descriptor_8c-source.html#l00430">a4l_get_chinfo()</a>, <a class="el" href="descriptor_8c-source.html#l00474">a4l_get_rnginfo()</a>, and <a class="el" href="descriptor_8c-source.html#l00393">a4l_get_subdinfo()</a>.</p>
</div>
</div><p>
<hr>The documentation for this struct was generated from the following file:<ul>
<li>include/analogy/<a class="el" href="descriptor_8h-source.html">descriptor.h</a></ul>
</div>
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