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<div id="projectname">FFmpeg
 <span id="projectnumber">2.7.1</span>
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<div class="title">vda_context Struct Reference<div class="ingroups"><a class="el" href="group__lavc__codec__hwaccel__vda.html">VDA</a></div></div> </div>
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<!-- doxytag: class="vda_context" -->
<p>This structure is used to provide the necessary configurations and data to the VDA FFmpeg HWAccel implementation.
<a href="structvda__context.html#details">More...</a></p>
<p><code>#include <<a class="el" href="vda_8h_source.html">vda.h</a>></code></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-attribs"></a>
Data Fields</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">VDADecoder </td><td class="memItemRight" valign="bottom"><a class="el" href="structvda__context.html#a760651dcebd505fd9a4cdea29db99ebf">decoder</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">VDA decoder object. <a href="#a760651dcebd505fd9a4cdea29db99ebf"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">CVPixelBufferRef </td><td class="memItemRight" valign="bottom"><a class="el" href="structvda__context.html#af7d84ca967ed9591e45c036e7c579a6f">cv_buffer</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The Core Video pixel buffer that contains the current image data. <a href="#af7d84ca967ed9591e45c036e7c579a6f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structvda__context.html#a76a944387b0dfe2b1b690ff4ad9f646a">use_sync_decoding</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Use the hardware decoder in synchronous mode. <a href="#a76a944387b0dfe2b1b690ff4ad9f646a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structvda__context.html#a1f8c3055063a3492f0066766930fbce9">width</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The frame width. <a href="#a1f8c3055063a3492f0066766930fbce9"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structvda__context.html#aa404ef10a896b154cd41829be525d0e3">height</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The frame height. <a href="#aa404ef10a896b154cd41829be525d0e3"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structvda__context.html#a0ea444e176f930513b19de5e0468ab0f">format</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The frame format. <a href="#a0ea444e176f930513b19de5e0468ab0f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">OSType </td><td class="memItemRight" valign="bottom"><a class="el" href="structvda__context.html#aceddeda581e0e4757ca20bff6fa75883">cv_pix_fmt_type</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The pixel format for output image buffers. <a href="#aceddeda581e0e4757ca20bff6fa75883"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">uint8_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="structvda__context.html#a46bbc8f32ea0b46e98e04bfa3a15a141">priv_bitstream</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">unused <a href="#a46bbc8f32ea0b46e98e04bfa3a15a141"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structvda__context.html#a625ea817b807502f9fbf764c882b1bf7">priv_bitstream_size</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">unused <a href="#a625ea817b807502f9fbf764c882b1bf7"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structvda__context.html#a4c3ea7e9a9286d2579f41915337fe229">priv_allocated_size</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">unused <a href="#a4c3ea7e9a9286d2579f41915337fe229"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structvda__context.html#a59cd6ad473ff9041df27a7fd92dd6b5d">use_ref_buffer</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Use av_buffer to manage buffer. <a href="#a59cd6ad473ff9041df27a7fd92dd6b5d"></a><br/></td></tr>
</table>
<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><p>This structure is used to provide the necessary configurations and data to the VDA FFmpeg HWAccel implementation. </p>
<p>The application must make it available as <a class="el" href="structAVCodecContext.html#ab222f7d747dfdceff0a76999e09648c0" title="Hardware accelerator context.">AVCodecContext.hwaccel_context</a>. </p>
<p>Definition at line <a class="el" href="vda_8h_source.html#l00065">65</a> of file <a class="el" href="vda_8h_source.html">vda.h</a>.</p>
</div><hr/><h2>Field Documentation</h2>
<a class="anchor" id="a760651dcebd505fd9a4cdea29db99ebf"></a><!-- doxytag: member="vda_context::decoder" ref="a760651dcebd505fd9a4cdea29db99ebf" args="" -->
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<td class="memname">VDADecoder <a class="el" href="structvda__context.html#a760651dcebd505fd9a4cdea29db99ebf">vda_context::decoder</a></td>
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<div class="memdoc">
<p>VDA decoder object. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set/Unset by libavcodec. </li>
</ul>
<p>Definition at line <a class="el" href="vda_8h_source.html#l00072">72</a> of file <a class="el" href="vda_8h_source.html">vda.h</a>.</p>
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<td class="memname">CVPixelBufferRef <a class="el" href="structvda__context.html#af7d84ca967ed9591e45c036e7c579a6f">vda_context::cv_buffer</a></td>
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<p>The Core Video pixel buffer that contains the current image data. </p>
<p>encoding: unused decoding: Set by libavcodec. Unset by user. </p>
<p>Definition at line <a class="el" href="vda_8h_source.html#l00080">80</a> of file <a class="el" href="vda_8h_source.html">vda.h</a>.</p>
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<a class="anchor" id="a76a944387b0dfe2b1b690ff4ad9f646a"></a><!-- doxytag: member="vda_context::use_sync_decoding" ref="a76a944387b0dfe2b1b690ff4ad9f646a" args="" -->
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<td class="memname">int <a class="el" href="structvda__context.html#a76a944387b0dfe2b1b690ff4ad9f646a">vda_context::use_sync_decoding</a></td>
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<div class="memdoc">
<p>Use the hardware decoder in synchronous mode. </p>
<p>encoding: unused decoding: Set by user. </p>
<p>Definition at line <a class="el" href="vda_8h_source.html#l00088">88</a> of file <a class="el" href="vda_8h_source.html">vda.h</a>.</p>
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<a class="anchor" id="a1f8c3055063a3492f0066766930fbce9"></a><!-- doxytag: member="vda_context::width" ref="a1f8c3055063a3492f0066766930fbce9" args="" -->
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<td class="memname">int <a class="el" href="structvda__context.html#a1f8c3055063a3492f0066766930fbce9">vda_context::width</a></td>
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<div class="memdoc">
<p>The frame width. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set/Unset by user. </li>
</ul>
<p>Definition at line <a class="el" href="vda_8h_source.html#l00096">96</a> of file <a class="el" href="vda_8h_source.html">vda.h</a>.</p>
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<td class="memname">int <a class="el" href="structvda__context.html#aa404ef10a896b154cd41829be525d0e3">vda_context::height</a></td>
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<p>The frame height. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set/Unset by user. </li>
</ul>
<p>Definition at line <a class="el" href="vda_8h_source.html#l00104">104</a> of file <a class="el" href="vda_8h_source.html">vda.h</a>.</p>
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<a class="anchor" id="a0ea444e176f930513b19de5e0468ab0f"></a><!-- doxytag: member="vda_context::format" ref="a0ea444e176f930513b19de5e0468ab0f" args="" -->
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<div class="memdoc">
<p>The frame format. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set/Unset by user. </li>
</ul>
<p>Definition at line <a class="el" href="vda_8h_source.html#l00112">112</a> of file <a class="el" href="vda_8h_source.html">vda.h</a>.</p>
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<a class="anchor" id="aceddeda581e0e4757ca20bff6fa75883"></a><!-- doxytag: member="vda_context::cv_pix_fmt_type" ref="aceddeda581e0e4757ca20bff6fa75883" args="" -->
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<td class="memname">OSType <a class="el" href="structvda__context.html#aceddeda581e0e4757ca20bff6fa75883">vda_context::cv_pix_fmt_type</a></td>
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<div class="memdoc">
<p>The pixel format for output image buffers. </p>
<ul>
<li>encoding: unused</li>
<li>decoding: Set/Unset by user. </li>
</ul>
<p>Definition at line <a class="el" href="vda_8h_source.html#l00120">120</a> of file <a class="el" href="vda_8h_source.html">vda.h</a>.</p>
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<a class="anchor" id="a46bbc8f32ea0b46e98e04bfa3a15a141"></a><!-- doxytag: member="vda_context::priv_bitstream" ref="a46bbc8f32ea0b46e98e04bfa3a15a141" args="" -->
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<td class="memname">uint8_t* <a class="el" href="structvda__context.html#a46bbc8f32ea0b46e98e04bfa3a15a141">vda_context::priv_bitstream</a></td>
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<div class="memdoc">
<p>unused </p>
<p>Definition at line <a class="el" href="vda_8h_source.html#l00125">125</a> of file <a class="el" href="vda_8h_source.html">vda.h</a>.</p>
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<a class="anchor" id="a625ea817b807502f9fbf764c882b1bf7"></a><!-- doxytag: member="vda_context::priv_bitstream_size" ref="a625ea817b807502f9fbf764c882b1bf7" args="" -->
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<p>unused </p>
<p>Definition at line <a class="el" href="vda_8h_source.html#l00130">130</a> of file <a class="el" href="vda_8h_source.html">vda.h</a>.</p>
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<a class="anchor" id="a4c3ea7e9a9286d2579f41915337fe229"></a><!-- doxytag: member="vda_context::priv_allocated_size" ref="a4c3ea7e9a9286d2579f41915337fe229" args="" -->
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<td class="memname">int <a class="el" href="structvda__context.html#a4c3ea7e9a9286d2579f41915337fe229">vda_context::priv_allocated_size</a></td>
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<div class="memdoc">
<p>unused </p>
<p>Definition at line <a class="el" href="vda_8h_source.html#l00135">135</a> of file <a class="el" href="vda_8h_source.html">vda.h</a>.</p>
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<a class="anchor" id="a59cd6ad473ff9041df27a7fd92dd6b5d"></a><!-- doxytag: member="vda_context::use_ref_buffer" ref="a59cd6ad473ff9041df27a7fd92dd6b5d" args="" -->
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<td class="memname">int <a class="el" href="structvda__context.html#a59cd6ad473ff9041df27a7fd92dd6b5d">vda_context::use_ref_buffer</a></td>
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<p>Use av_buffer to manage buffer. </p>
<p>When the flag is set, the CVPixelBuffers returned by the decoder will be released automatically, so you have to retain them if necessary. Not setting this flag may cause memory leak.</p>
<p>encoding: unused decoding: Set by user. </p>
<p>Definition at line <a class="el" href="vda_8h_source.html#l00146">146</a> of file <a class="el" href="vda_8h_source.html">vda.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="vda_8h_source.html">vda.h</a></li>
</ul>
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