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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic topic" role="article" aria-labelledby="ariaid-title1"><span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/out/external-references/video_memory.xlsx">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">video_memory</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;"></div><div class="- topic/body body"><div class="table-container"><table class="- topic/table table" id="video_memory__Sheet1" data-ofbid="video_memory__Sheet1" data-cols="5"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 1</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">Sheet1</span></caption><colgroup><col/><col/><col/><col/><col/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory__Sheet1__entry__1">分辨率</th><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory__Sheet1__entry__2"></th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__1"></td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__2">计算方式</td><td class="- topic/entry entry colsep-0 rowsep-0">说明</td><td class="- topic/entry entry colsep-0 rowsep-0">宽</td><td class="- topic/entry entry colsep-0 rowsep-0">高</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__1">输入码流buffer
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（大小可由应用层配置）</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__2"></td><td class="- topic/entry entry colsep-0 rowsep-0"></td><td class="- topic/entry entry colsep-0 rowsep-0">1920</td><td class="- topic/entry entry colsep-0 rowsep-0">1080</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__1">输出帧buffer</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__2">width*height*3/2 * frame_num</td><td class="- topic/entry entry colsep-0 rowsep-0">frame_num至少需要（参考帧个数+1）；
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目前我们配置的是（参考帧个数+2），多一个用于显示</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__1">帧内预测需要的上一行数据</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__2">width*2</td><td class="- topic/entry entry colsep-0 rowsep-0"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__1">宏块信息buffer</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__2">固定12K</td><td class="- topic/entry entry colsep-0 rowsep-0"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__1">dblk 需要的上一个宏块行最后4行数据</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__2">width*8</td><td class="- topic/entry entry colsep-0 rowsep-0"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__1">co-located信息</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__2">固定68K</td><td class="- topic/entry entry colsep-0 rowsep-0">这两块buffer B帧解码才会用到，但硬件没有预留开关控制，所以在我们的使用场景也必须申请</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__1">co-located buffer</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__2">(width/16)*(height/16)*32*frame_num</td><td class="- topic/entry entry colsep-0 rowsep-0"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__1">宽</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory__Sheet1__entry__2">高</td></tr></tbody></table></div><div class="table-container"><table class="- topic/table table" id="video_memory___" data-ofbid="video_memory___" data-cols="12"><caption class="- topic/title title tablecap" data-caption-side="top" data-is-repeated="true"><span class="table--title-label">表<span class="table--title-label-number"> 2</span><span class="table--title-label-punctuation">. </span></span><span class="table--title">自动计算表格</span></caption><colgroup><col/><col/><col/><col/><col/><col/><col/><col/><col/><col/><col/><col/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory_____entry__1">分辨率</th><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory_____entry__2"></th><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory_____entry__3">参考帧个数</th><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory_____entry__4">额外输出buf个数</th><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory_____entry__5">输入码流buf</th><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory_____entry__6">输出帧buf</th><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory_____entry__7">帧内预测内部使用临时buf</th><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory_____entry__8">宏块信息</th><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory_____entry__9">dblk临时buf</th><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory_____entry__10">co-located信息</th><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory_____entry__11">每一帧co-located
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数据缓存</th><th class="- topic/entry entry colsep-0 rowsep-0" id="video_memory_____entry__12">buff总量(KB)</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__1">宽</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__2">高</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__3"></td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__4"></td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__5"></td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__6"></td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__7"></td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__8"></td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__9"></td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__10"></td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__11"></td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__12"></td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__1">1920</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__2">1080</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__3">1</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__4">1</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__5">524288</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__6">9331200</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__7">3840</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__8">12288</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__9">15360</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__10">69632</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__11">777600</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__12">10483</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__1">1024</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__2">600</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__3">1</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__4">1</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__5">524288</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__6">2764800</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__7">2048</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__8">12288</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__9">8192</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__10">69632</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__11">230400</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__12">3527</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__1">1280</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__2">720</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__3">1</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="video_memory_____entry__4">1</td><td class="- topic/entry entry colsep-0 rowsep-0" h
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|
<div class="webhelp.fragment.footer">
|
|||
|
|
<p class="p1">Copyright © 2019-2024 广东匠芯创科技有限公司. All rights reserved.</p>
|
|||
|
|
</div><div>
|
|||
|
|
<div class="generation_time">
|
|||
|
|
Update Time: 2025-01-21
|
|||
|
|
</div>
|
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|
</div>
|
|||
|
|
</div>
|
|||
|
|
</footer>
|
|||
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|
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|
|
<div id="go2top" class="d-print-none">
|
|||
|
|
<span class="oxy-icon oxy-icon-up"></span>
|
|||
|
|
</div>
|
|||
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|
|||
|
|
<div id="modal_img_large" class="modal">
|
|||
|
|
<span class="close oxy-icon oxy-icon-remove"></span>
|
|||
|
|
<div id="modal_img_container"></div>
|
|||
|
|
<div id="caption"></div>
|
|||
|
|
</div>
|
|||
|
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|
|||
|
|
|
|||
|
|
<script src="${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer="defer"></script>
|
|||
|
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|
|||
|
|
|
|||
|
|
</body>
|
|||
|
|
</html>
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