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struct__VAEncMacroblockParameterBufferH264.html
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<div class="title">_VAEncMacroblockParameterBufferH264 Struct Reference<div class="ingroups"><a class="el" href="group__api__enc__h264.html">H.264 encoding API</a></div></div> </div>
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<p>Macroblock parameter for H.264 encoding in baseline, main & high profiles.
<a href="struct__VAEncMacroblockParameterBufferH264.html#details">More...</a></p>
<p><code>#include <<a class="el" href="va__enc__h264_8h_source.html">va_enc_h264.h</a>></code></p>
<p><a href="struct__VAEncMacroblockParameterBufferH264-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-attribs"></a>
Public Attributes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned char </td><td class="memItemRight" valign="bottom"><a class="el" href="struct__VAEncMacroblockParameterBufferH264.html#a91de1d5497956a60b4616b03732bc9a9">qp</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Quantization parameter. <a href="#a91de1d5497956a60b4616b03732bc9a9"></a><br/></td></tr>
<tr><td class="memItemLeft" ><a class="anchor" id="aac9f750f38bf3b640aac2a8a141ee1c5"></a><!-- doxytag: member="_VAEncMacroblockParameterBufferH264::info" ref="aac9f750f38bf3b640aac2a8a141ee1c5" args="" -->
union {</td></tr>
<tr><td class="memItemLeft" >   struct {</td></tr>
<tr><td class="memItemLeft" >      union {</td></tr>
<tr><td class="memItemLeft" >         unsigned int   <a class="el" href="struct__VAEncMacroblockParameterBufferH264.html#ab23deb1d4f1a2f764056f1e601fb96e6">pred_avail_override_flag</a>: 1</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Flag specified to override MB neighbour availability bits from VME stage. <a href="#ad7efde5ce846adbee8f9fa5d3a7bde6b"></a><br/></td></tr>
<tr><td class="memItemLeft" >         unsigned int   <a class="el" href="struct__VAEncMacroblockParameterBufferH264.html#a73f145900a5f5dbddf33ca45c3ed3458">pred_avail_flags</a>: 8</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Bitwise representation of which macroblocks are available for intra prediction. <a href="#a9c7680acd1a82a8c7e2afd8be34789f2"></a><br/></td></tr>
<tr><td class="memItemLeft" valign="top">      }   <b>bits</b></td></tr>
<tr><td class="memItemLeft" >      unsigned int   <b>value</b></td></tr>
<tr><td class="memItemLeft" valign="top">   }   <b>intra_fields</b></td></tr>
<tr><td class="memItemLeft" >   struct {</td></tr>
<tr><td class="memItemLeft" >      union {</td></tr>
<tr><td class="memItemLeft" valign="top">      }   <b>bits</b></td></tr>
<tr><td class="memItemLeft" >      unsigned int   <b>value</b></td></tr>
<tr><td class="memItemLeft" valign="top">   }   <b>inter_fields</b></td></tr>
<tr><td class="memItemLeft" valign="top">} </td><td class="memItemRight" valign="bottom"><b>info</b></td></tr>
<tr><td colspan="2"><div class="groupHeader">Data for intra macroblock</div></td></tr>
<tr><td colspan="2"><div class="groupHeader">Data for inter macroblock</div></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>Macroblock parameter for H.264 encoding in baseline, main & high profiles. </p>
<p>This structure holds per-macroblock information. The buffer must be allocated with as many elements (macroblocks) as necessary to fit the slice to be encoded. Besides, the per-macroblock records must be written in a strict raster order and with no gap. i.e. every macroblock, regardless of its type, shall have an entry. </p>
</div><hr/><h2>Member Data Documentation</h2>
<a class="anchor" id="a73f145900a5f5dbddf33ca45c3ed3458"></a><!-- doxytag: member="_VAEncMacroblockParameterBufferH264::pred_avail_flags" ref="a73f145900a5f5dbddf33ca45c3ed3458" args="" -->
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<td class="memname">unsigned int <a class="el" href="struct__VAEncMacroblockParameterBufferH264.html#a73f145900a5f5dbddf33ca45c3ed3458">_VAEncMacroblockParameterBufferH264::pred_avail_flags</a></td>
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<p>Bitwise representation of which macroblocks are available for intra prediction. </p>
<p>If the slice is intra-coded, this field represents the macroblocks available for intra prediction. See <a class="el" href="group__api__enc__h264.html#api_enc_h264_mb_pred_avail_bits">macroblock neighbour availability</a> bit definitions. </p>
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<a class="anchor" id="ab23deb1d4f1a2f764056f1e601fb96e6"></a><!-- doxytag: member="_VAEncMacroblockParameterBufferH264::pred_avail_override_flag" ref="ab23deb1d4f1a2f764056f1e601fb96e6" args="" -->
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<td class="memname">unsigned int <a class="el" href="struct__VAEncMacroblockParameterBufferH264.html#ab23deb1d4f1a2f764056f1e601fb96e6">_VAEncMacroblockParameterBufferH264::pred_avail_override_flag</a></td>
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<p>Flag specified to override MB neighbour availability bits from VME stage. </p>
<p>This flag specifies that macroblock neighbour availability bits from the VME stage are overriden by the <a class="el" href="struct__VAEncMacroblockParameterBufferH264.html#a73f145900a5f5dbddf33ca45c3ed3458">pred_avail_flags</a> hereunder. </p>
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<a class="anchor" id="a91de1d5497956a60b4616b03732bc9a9"></a><!-- doxytag: member="_VAEncMacroblockParameterBufferH264::qp" ref="a91de1d5497956a60b4616b03732bc9a9" args="" -->
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<td class="memname">unsigned char <a class="el" href="struct__VAEncMacroblockParameterBufferH264.html#a91de1d5497956a60b4616b03732bc9a9">_VAEncMacroblockParameterBufferH264::qp</a></td>
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<p>Quantization parameter. </p>
<p>Requested quantization parameter. Range: 0 to 51, inclusive. If <a class="el" href="struct__VAEncMacroblockParameterBufferH264.html#a91de1d5497956a60b4616b03732bc9a9">qp</a> is set to 0xff, then the actual value is derived from the slice-level value: <code>pic_init_qp</code> + <code>slice_qp_delta</code>. </p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li><a class="el" href="va__enc__h264_8h_source.html">va_enc_h264.h</a></li>
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