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 <span id="projectnumber">3.0.2</span>
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<div class="title">vaapi_context Struct Reference<div class="ingroups"><a class="el" href="group__lavc__codec__hwaccel__vaapi.html">VA API Decoding</a></div></div> </div>
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<p>This structure is used to share data between the FFmpeg library and the client video application.
<a href="structvaapi__context.html#details">More...</a></p>
<p><code>#include <<a class="el" href="vaapi_8h_source.html">vaapi.h</a>></code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Data Fields</h2></td></tr>
<tr class="memitem:ad16240a71f568ffdb98dc7cc7d231180"><td class="memItemLeft" align="right" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#ad16240a71f568ffdb98dc7cc7d231180">display</a></td></tr>
<tr class="memdesc:ad16240a71f568ffdb98dc7cc7d231180"><td class="mdescLeft"> </td><td class="mdescRight">Window system dependent data. <a href="#ad16240a71f568ffdb98dc7cc7d231180">More...</a><br/></td></tr>
<tr class="separator:ad16240a71f568ffdb98dc7cc7d231180"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8523abca4746125bb1458a13bee1a1bd"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#a8523abca4746125bb1458a13bee1a1bd">config_id</a></td></tr>
<tr class="memdesc:a8523abca4746125bb1458a13bee1a1bd"><td class="mdescLeft"> </td><td class="mdescRight">Configuration ID. <a href="#a8523abca4746125bb1458a13bee1a1bd">More...</a><br/></td></tr>
<tr class="separator:a8523abca4746125bb1458a13bee1a1bd"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2574735bdd4c51910ce627a6f1ec0b63"><td class="memItemLeft" align="right" valign="top">uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#a2574735bdd4c51910ce627a6f1ec0b63">context_id</a></td></tr>
<tr class="memdesc:a2574735bdd4c51910ce627a6f1ec0b63"><td class="mdescLeft"> </td><td class="mdescRight">Context ID (video decode pipeline) <a href="#a2574735bdd4c51910ce627a6f1ec0b63">More...</a><br/></td></tr>
<tr class="separator:a2574735bdd4c51910ce627a6f1ec0b63"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ae371e5b079296cf7471adb0f80ab74a3"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#ae371e5b079296cf7471adb0f80ab74a3">pic_param_buf_id</a></td></tr>
<tr class="memdesc:ae371e5b079296cf7471adb0f80ab74a3"><td class="mdescLeft"> </td><td class="mdescRight">VAPictureParameterBuffer ID. <a href="#ae371e5b079296cf7471adb0f80ab74a3">More...</a><br/></td></tr>
<tr class="separator:ae371e5b079296cf7471adb0f80ab74a3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a2d616f9ace3a89bde0e82d81841bca52"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#a2d616f9ace3a89bde0e82d81841bca52">iq_matrix_buf_id</a></td></tr>
<tr class="memdesc:a2d616f9ace3a89bde0e82d81841bca52"><td class="mdescLeft"> </td><td class="mdescRight">VAIQMatrixBuffer ID. <a href="#a2d616f9ace3a89bde0e82d81841bca52">More...</a><br/></td></tr>
<tr class="separator:a2d616f9ace3a89bde0e82d81841bca52"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a785be1157dbb5bc930241835e223aca3"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#a785be1157dbb5bc930241835e223aca3">bitplane_buf_id</a></td></tr>
<tr class="memdesc:a785be1157dbb5bc930241835e223aca3"><td class="mdescLeft"> </td><td class="mdescRight">VABitPlaneBuffer ID (for VC-1 decoding) <a href="#a785be1157dbb5bc930241835e223aca3">More...</a><br/></td></tr>
<tr class="separator:a785be1157dbb5bc930241835e223aca3"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ad905a45700cb01d07be055be2fc82865"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> uint32_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#ad905a45700cb01d07be055be2fc82865">slice_buf_ids</a></td></tr>
<tr class="memdesc:ad905a45700cb01d07be055be2fc82865"><td class="mdescLeft"> </td><td class="mdescRight">Slice parameter/data buffer IDs. <a href="#ad905a45700cb01d07be055be2fc82865">More...</a><br/></td></tr>
<tr class="separator:ad905a45700cb01d07be055be2fc82865"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:aaa229a0d748c2599e55749c6c389d8ae"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#aaa229a0d748c2599e55749c6c389d8ae">n_slice_buf_ids</a></td></tr>
<tr class="memdesc:aaa229a0d748c2599e55749c6c389d8ae"><td class="mdescLeft"> </td><td class="mdescRight">Number of effective slice buffer IDs to send to the HW. <a href="#aaa229a0d748c2599e55749c6c389d8ae">More...</a><br/></td></tr>
<tr class="separator:aaa229a0d748c2599e55749c6c389d8ae"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a46781be3eb971f02cc9f3ab05d9d0ce9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#a46781be3eb971f02cc9f3ab05d9d0ce9">slice_buf_ids_alloc</a></td></tr>
<tr class="memdesc:a46781be3eb971f02cc9f3ab05d9d0ce9"><td class="mdescLeft"> </td><td class="mdescRight">Size of pre-allocated slice_buf_ids. <a href="#a46781be3eb971f02cc9f3ab05d9d0ce9">More...</a><br/></td></tr>
<tr class="separator:a46781be3eb971f02cc9f3ab05d9d0ce9"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a9e6f2405b51a07ce7f729dc7144063cf"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> void * </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#a9e6f2405b51a07ce7f729dc7144063cf">slice_params</a></td></tr>
<tr class="memdesc:a9e6f2405b51a07ce7f729dc7144063cf"><td class="mdescLeft"> </td><td class="mdescRight">Pointer to VASliceParameterBuffers. <a href="#a9e6f2405b51a07ce7f729dc7144063cf">More...</a><br/></td></tr>
<tr class="separator:a9e6f2405b51a07ce7f729dc7144063cf"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a203fd6b1778957f579cb917c5caf2710"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#a203fd6b1778957f579cb917c5caf2710">slice_param_size</a></td></tr>
<tr class="memdesc:a203fd6b1778957f579cb917c5caf2710"><td class="mdescLeft"> </td><td class="mdescRight">Size of a VASliceParameterBuffer element. <a href="#a203fd6b1778957f579cb917c5caf2710">More...</a><br/></td></tr>
<tr class="separator:a203fd6b1778957f579cb917c5caf2710"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a53bb3260dc74c6e812a846b9a9acaf73"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#a53bb3260dc74c6e812a846b9a9acaf73">slice_params_alloc</a></td></tr>
<tr class="memdesc:a53bb3260dc74c6e812a846b9a9acaf73"><td class="mdescLeft"> </td><td class="mdescRight">Size of pre-allocated slice_params. <a href="#a53bb3260dc74c6e812a846b9a9acaf73">More...</a><br/></td></tr>
<tr class="separator:a53bb3260dc74c6e812a846b9a9acaf73"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a00eb9b905d6e65afc4d106296dcef001"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> unsigned int </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#a00eb9b905d6e65afc4d106296dcef001">slice_count</a></td></tr>
<tr class="memdesc:a00eb9b905d6e65afc4d106296dcef001"><td class="mdescLeft"> </td><td class="mdescRight">Number of slices currently filled in. <a href="#a00eb9b905d6e65afc4d106296dcef001">More...</a><br/></td></tr>
<tr class="separator:a00eb9b905d6e65afc4d106296dcef001"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a85af521e3594b163769ac2164fee30c7"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> const <br class="typebreak"/>
uint8_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#a85af521e3594b163769ac2164fee30c7">slice_data</a></td></tr>
<tr class="memdesc:a85af521e3594b163769ac2164fee30c7"><td class="mdescLeft"> </td><td class="mdescRight">Pointer to slice data buffer base. <a href="#a85af521e3594b163769ac2164fee30c7">More...</a><br/></td></tr>
<tr class="separator:a85af521e3594b163769ac2164fee30c7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a3f5c6e01ccdccb4dcd6d7f0987b2cd53"><td class="memItemLeft" align="right" valign="top"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> uint32_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structvaapi__context.html#a3f5c6e01ccdccb4dcd6d7f0987b2cd53">slice_data_size</a></td></tr>
<tr class="memdesc:a3f5c6e01ccdccb4dcd6d7f0987b2cd53"><td class="mdescLeft"> </td><td class="mdescRight">Current size of slice data. <a href="#a3f5c6e01ccdccb4dcd6d7f0987b2cd53">More...</a><br/></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>This structure is used to share data between the FFmpeg library and the client video application. </p>
<p>This shall be zero-allocated and available as <a class="el" href="structAVCodecContext.html#ab222f7d747dfdceff0a76999e09648c0" title="Hardware accelerator context. ">AVCodecContext.hwaccel_context</a>. All user members can be set once during initialization or through each AVCodecContext.get_buffer() function call. In any case, they must be valid prior to calling decoding functions. </p>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00052">52</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
</div><h2 class="groupheader">Field Documentation</h2>
<a class="anchor" id="ad16240a71f568ffdb98dc7cc7d231180"></a>
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<td class="memname">void* vaapi_context::display</td>
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<p>Window system dependent data. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by user </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00059">59</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname">uint32_t vaapi_context::config_id</td>
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<p>Configuration ID. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by user </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00067">67</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname">uint32_t vaapi_context::context_id</td>
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<p>Context ID (video decode pipeline) </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by user </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00075">75</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> uint32_t vaapi_context::pic_param_buf_id</td>
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<p>VAPictureParameterBuffer ID. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by libavcodec </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00085">85</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> uint32_t vaapi_context::iq_matrix_buf_id</td>
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<p>VAIQMatrixBuffer ID. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by libavcodec </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00094">94</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> uint32_t vaapi_context::bitplane_buf_id</td>
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<p>VABitPlaneBuffer ID (for VC-1 decoding) </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by libavcodec </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00103">103</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> uint32_t* vaapi_context::slice_buf_ids</td>
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<p>Slice parameter/data buffer IDs. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by libavcodec </li>
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<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00112">112</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> unsigned int vaapi_context::n_slice_buf_ids</td>
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<p>Number of effective slice buffer IDs to send to the HW. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by libavcodec </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00121">121</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> unsigned int vaapi_context::slice_buf_ids_alloc</td>
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<p>Size of pre-allocated slice_buf_ids. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by libavcodec </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00130">130</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> void* vaapi_context::slice_params</td>
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<p>Pointer to VASliceParameterBuffers. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by libavcodec </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00139">139</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> unsigned int vaapi_context::slice_param_size</td>
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<p>Size of a VASliceParameterBuffer element. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by libavcodec </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00148">148</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> unsigned int vaapi_context::slice_params_alloc</td>
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<p>Size of pre-allocated slice_params. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by libavcodec </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00157">157</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> unsigned int vaapi_context::slice_count</td>
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<p>Number of slices currently filled in. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by libavcodec </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00166">166</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> const uint8_t* vaapi_context::slice_data</td>
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<p>Pointer to slice data buffer base. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by libavcodec </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00174">174</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<td class="memname"><a class="el" href="attributes_8h.html#aa6d076561d3a9eea4729ee632652de02">attribute_deprecated</a> uint32_t vaapi_context::slice_data_size</td>
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<p>Current size of slice data. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set by libavcodec </li>
</ul>
<p>Definition at line <a class="el" href="vaapi_8h_source.html#l00183">183</a> of file <a class="el" href="vaapi_8h_source.html">vaapi.h</a>.</p>
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<hr/>The documentation for this struct was generated from the following file:<ul>
<li>libavcodec/<a class="el" href="vaapi_8h_source.html">vaapi.h</a></li>
</ul>
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