417 lines
20 KiB
HTML
417 lines
20 KiB
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<div class="header">
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<div class="headertitle"><div class="title">EDID parsing functionality </div></div>
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<div class="contents">
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 id="header-enum-members" class="groupheader"><a id="enum-members" name="enum-members"></a>
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Enumerations</h2></td></tr>
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<tr class="memitem:ga57a3abbabf6035cbf2698018e4251d5f" id="r_ga57a3abbabf6035cbf2698018e4251d5f"><td class="memItemLeft" align="right" valign="top">enum  </td><td class="memItemRight" valign="bottom"><a class="el" href="#ga57a3abbabf6035cbf2698018e4251d5f">Libedid_consts</a> { <a class="el" href="#gga57a3abbabf6035cbf2698018e4251d5fabf81658bba3e50c1274e357bce950d70">Libedid_block_size</a> = 128
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}</td></tr>
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<tr class="memdesc:ga57a3abbabf6035cbf2698018e4251d5f"><td class="mdescLeft"> </td><td class="mdescRight">EDID constants. <a href="#ga57a3abbabf6035cbf2698018e4251d5f">More...</a><br /></td></tr>
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</table><table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 id="header-func-members" class="groupheader"><a id="func-members" name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:ga8c12852e62e855e8463e8845b3c677f8" id="r_ga8c12852e62e855e8463e8845b3c677f8"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="#ga8c12852e62e855e8463e8845b3c677f8">libedid_check_header</a> (const unsigned char *edid)</td></tr>
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<tr class="memdesc:ga8c12852e62e855e8463e8845b3c677f8"><td class="mdescLeft"> </td><td class="mdescRight">Check for valid EDID header. <br /></td></tr>
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<tr class="memitem:gac657effed5a42ce163d96d960f659853" id="r_gac657effed5a42ce163d96d960f659853"><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="#gac657effed5a42ce163d96d960f659853">libedid_checksum</a> (const unsigned char *edid)</td></tr>
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<tr class="memdesc:gac657effed5a42ce163d96d960f659853"><td class="mdescLeft"> </td><td class="mdescRight">Calculates the EDID checksum. <br /></td></tr>
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<tr class="memitem:gaf3bcdc7f60b7d0fa71b7000a051b5124" id="r_gaf3bcdc7f60b7d0fa71b7000a051b5124"><td class="memItemLeft" align="right" valign="top">unsigned </td><td class="memItemRight" valign="bottom"><a class="el" href="#gaf3bcdc7f60b7d0fa71b7000a051b5124">libedid_version</a> (const unsigned char *edid)</td></tr>
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<tr class="memdesc:gaf3bcdc7f60b7d0fa71b7000a051b5124"><td class="mdescLeft"> </td><td class="mdescRight">Returns the EDID version number. <br /></td></tr>
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<tr class="memitem:ga80b145315e938e27a9e1bf30ac0223f8" id="r_ga80b145315e938e27a9e1bf30ac0223f8"><td class="memItemLeft" align="right" valign="top">unsigned </td><td class="memItemRight" valign="bottom"><a class="el" href="#ga80b145315e938e27a9e1bf30ac0223f8">libedid_revision</a> (const unsigned char *edid)</td></tr>
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<tr class="memdesc:ga80b145315e938e27a9e1bf30ac0223f8"><td class="mdescLeft"> </td><td class="mdescRight">Returns the EDID revision number. <br /></td></tr>
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<tr class="memitem:ga5f0b9f85a59740a354fe638bb7966170" id="r_ga5f0b9f85a59740a354fe638bb7966170"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="#ga5f0b9f85a59740a354fe638bb7966170">libedid_pnp_id</a> (const unsigned char *edid, unsigned char *id)</td></tr>
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<tr class="memdesc:ga5f0b9f85a59740a354fe638bb7966170"><td class="mdescLeft"> </td><td class="mdescRight">Extracts the display's PnP ID. <br /></td></tr>
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<tr class="memitem:ga0f401bd4dc517620e17f1c8185e32aea" id="r_ga0f401bd4dc517620e17f1c8185e32aea"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="#ga0f401bd4dc517620e17f1c8185e32aea">libedid_prefered_resolution</a> (const unsigned char *edid, unsigned *w, unsigned *h)</td></tr>
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<tr class="memdesc:ga0f401bd4dc517620e17f1c8185e32aea"><td class="mdescLeft"> </td><td class="mdescRight">Extract the display's prefered mode. <br /></td></tr>
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<tr class="memitem:ga5d787023abc4b033a49e98f81b49730d" id="r_ga5d787023abc4b033a49e98f81b49730d"><td class="memItemLeft" align="right" valign="top">unsigned </td><td class="memItemRight" valign="bottom"><a class="el" href="#ga5d787023abc4b033a49e98f81b49730d">libedid_num_ext_blocks</a> (const unsigned char *edid)</td></tr>
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<tr class="memdesc:ga5d787023abc4b033a49e98f81b49730d"><td class="mdescLeft"> </td><td class="mdescRight">Get the number of EDID extension blocks. <br /></td></tr>
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<tr class="memitem:ga064f2e5ae6a0798f4c4a43f91b35d676" id="r_ga064f2e5ae6a0798f4c4a43f91b35d676"><td class="memItemLeft" align="right" valign="top">unsigned </td><td class="memItemRight" valign="bottom"><a class="el" href="#ga064f2e5ae6a0798f4c4a43f91b35d676">libedid_dump_standard_timings</a> (const unsigned char *edid)</td></tr>
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<tr class="memdesc:ga064f2e5ae6a0798f4c4a43f91b35d676"><td class="mdescLeft"> </td><td class="mdescRight">Dump the standard timings to stdout. <br /></td></tr>
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<tr class="memitem:ga4197ec903c4abe2b80b59400023b8180" id="r_ga4197ec903c4abe2b80b59400023b8180"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="#ga4197ec903c4abe2b80b59400023b8180">libedid_dump</a> (const unsigned char *edid)</td></tr>
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<tr class="memdesc:ga4197ec903c4abe2b80b59400023b8180"><td class="mdescLeft"> </td><td class="mdescRight">Dump raw EDID data to stdout. <br /></td></tr>
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</table>
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<a name="details" id="details"></a><h2 id="header-details" class="groupheader">Detailed Description</h2>
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<a name="doc-enum-members" id="doc-enum-members"></a><h2 id="header-doc-enum-members" class="groupheader">Enumeration Type Documentation</h2>
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<a id="ga57a3abbabf6035cbf2698018e4251d5f" name="ga57a3abbabf6035cbf2698018e4251d5f"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga57a3abbabf6035cbf2698018e4251d5f">◆ </a></span>Libedid_consts</h2>
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<td class="memname">enum <a class="el" href="#ga57a3abbabf6035cbf2698018e4251d5f">Libedid_consts</a></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>EDID constants. </p>
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<table class="fieldtable">
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<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="gga57a3abbabf6035cbf2698018e4251d5fabf81658bba3e50c1274e357bce950d70" name="gga57a3abbabf6035cbf2698018e4251d5fabf81658bba3e50c1274e357bce950d70"></a>Libedid_block_size </td><td class="fielddoc"><p>Size of one EDID block in bytes. </p>
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</td></tr>
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</table>
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<p class="definition">Definition at line <a class="el" href="edid_8h_source.html#l00023">23</a> of file <a class="el" href="edid_8h_source.html">edid.h</a>.</p>
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</div>
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<a name="doc-func-members" id="doc-func-members"></a><h2 id="header-doc-func-members" class="groupheader">Function Documentation</h2>
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<a id="ga8c12852e62e855e8463e8845b3c677f8" name="ga8c12852e62e855e8463e8845b3c677f8"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga8c12852e62e855e8463e8845b3c677f8">◆ </a></span>libedid_check_header()</h2>
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<td class="memname">int libedid_check_header </td>
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<td>(</td>
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<td class="paramtype">const unsigned char *</td> <td class="paramname"><span class="paramname"><em>edid</em></span></td><td>)</td>
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<td></td>
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<p>Check for valid EDID header. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">edid</td><td>Pointer to a 128byte EDID block</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>0 if the header is correct, -EINVAL otherwise </dd></dl>
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</div>
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</div>
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<a id="gac657effed5a42ce163d96d960f659853" name="gac657effed5a42ce163d96d960f659853"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#gac657effed5a42ce163d96d960f659853">◆ </a></span>libedid_checksum()</h2>
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<td class="memname">int libedid_checksum </td>
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<td>(</td>
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<td class="paramtype">const unsigned char *</td> <td class="paramname"><span class="paramname"><em>edid</em></span></td><td>)</td>
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<td></td>
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<p>Calculates the EDID checksum. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">edid</td><td>Pointer to a 128byte EDID block</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>0 if checksum is correct, -EINVAL otherwise </dd></dl>
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</div>
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</div>
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<a id="ga4197ec903c4abe2b80b59400023b8180" name="ga4197ec903c4abe2b80b59400023b8180"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga4197ec903c4abe2b80b59400023b8180">◆ </a></span>libedid_dump()</h2>
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<td class="memname">void libedid_dump </td>
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<td>(</td>
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<td class="paramtype">const unsigned char *</td> <td class="paramname"><span class="paramname"><em>edid</em></span></td><td>)</td>
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<td></td>
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</tr>
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</div><div class="memdoc">
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<p>Dump raw EDID data to stdout. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">edid</td><td>Pointer to a 128byte EDID block </td></tr>
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</table>
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</dd>
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</dl>
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</div>
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</div>
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<a id="ga064f2e5ae6a0798f4c4a43f91b35d676" name="ga064f2e5ae6a0798f4c4a43f91b35d676"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga064f2e5ae6a0798f4c4a43f91b35d676">◆ </a></span>libedid_dump_standard_timings()</h2>
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<div class="memitem">
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<table class="memname">
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<td class="memname">unsigned libedid_dump_standard_timings </td>
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<td>(</td>
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<td class="paramtype">const unsigned char *</td> <td class="paramname"><span class="paramname"><em>edid</em></span></td><td>)</td>
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<td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<p>Dump the standard timings to stdout. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">edid</td><td>Pointer to a 128byte EDID block</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>Number of standard timings stored in EDID </dd></dl>
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</div>
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<a id="ga5d787023abc4b033a49e98f81b49730d" name="ga5d787023abc4b033a49e98f81b49730d"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga5d787023abc4b033a49e98f81b49730d">◆ </a></span>libedid_num_ext_blocks()</h2>
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<td class="memname">unsigned libedid_num_ext_blocks </td>
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<td>(</td>
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<td class="paramtype">const unsigned char *</td> <td class="paramname"><span class="paramname"><em>edid</em></span></td><td>)</td>
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<td></td>
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</div><div class="memdoc">
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<p>Get the number of EDID extension blocks. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">edid</td><td>Pointer to a 128byte EDID block</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>Number of EDID extension blocks </dd></dl>
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<a id="ga5f0b9f85a59740a354fe638bb7966170" name="ga5f0b9f85a59740a354fe638bb7966170"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga5f0b9f85a59740a354fe638bb7966170">◆ </a></span>libedid_pnp_id()</h2>
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<td class="memname">void libedid_pnp_id </td>
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<td>(</td>
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<td class="paramtype">const unsigned char *</td> <td class="paramname"><span class="paramname"><em>edid</em></span>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">unsigned char *</td> <td class="paramname"><span class="paramname"><em>id</em></span> )</td>
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</div><div class="memdoc">
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<p>Extracts the display's PnP ID. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir"></td><td class="paramname">edid</td><td>Pointer to a 128byte EDID block </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">id</td><td>Return the PnP id. Must point to 4 bytes. </td></tr>
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<h2 class="memtitle"><span class="permalink"><a href="#ga0f401bd4dc517620e17f1c8185e32aea">◆ </a></span>libedid_prefered_resolution()</h2>
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<td class="memname">void libedid_prefered_resolution </td>
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<td>(</td>
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<td class="paramtype">const unsigned char *</td> <td class="paramname"><span class="paramname"><em>edid</em></span>, </td>
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<td class="paramtype">unsigned *</td> <td class="paramname"><span class="paramname"><em>w</em></span>, </td>
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<td class="paramtype">unsigned *</td> <td class="paramname"><span class="paramname"><em>h</em></span> )</td>
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<p>Extract the display's prefered mode. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir"></td><td class="paramname">edid</td><td>Pointer to a 128byte EDID block </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">w</td><td>X resolution of prefered video mode in pixels. </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">h</td><td>Y resolution of prefered video mode in pixels. </td></tr>
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<h2 class="memtitle"><span class="permalink"><a href="#ga80b145315e938e27a9e1bf30ac0223f8">◆ </a></span>libedid_revision()</h2>
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<td class="memname">unsigned libedid_revision </td>
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<td>(</td>
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<td class="paramtype">const unsigned char *</td> <td class="paramname"><span class="paramname"><em>edid</em></span></td><td>)</td>
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<p>Returns the EDID revision number. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">edid</td><td>Pointer to a 128 EDID block</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>Revision number </dd></dl>
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<a id="gaf3bcdc7f60b7d0fa71b7000a051b5124" name="gaf3bcdc7f60b7d0fa71b7000a051b5124"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#gaf3bcdc7f60b7d0fa71b7000a051b5124">◆ </a></span>libedid_version()</h2>
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<td class="memname">unsigned libedid_version </td>
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<td class="paramtype">const unsigned char *</td> <td class="paramname"><span class="paramname"><em>edid</em></span></td><td>)</td>
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<p>Returns the EDID version number. </p>
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">edid</td><td>Pointer to a 128byte EDID block</td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>Version number </dd></dl>
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