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<span class="edit-link" style="font-size:12px; opacity:0.6; text-align:right; vertical-align:middle"><a target="_blank" title="Edit this document" href="http://172.16.35.88/tasks/jdssno1uvvbf2mltu9kb9v3if05d5gopuakboe8hlud18rma/edit/F:/aicdita/aicdita-cn/topics/sdk/ve/ve-user-guide.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">VE 使用指南</h1>
|
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|
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<div class="date inPage">15 Jan 2024</div><div style="color: gray;">
|
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Read time: 2 minute(s)
|
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</div>
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<div class="- topic/body concept/conbody body conbody" id="ve__conbody_d3b_db3_p1c">
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<p class="- topic/p p" data-ofbid="d137201e33__20250123155213">Video Engine (VE) 是 ArtInChip 自主研发的视频加速引擎，支持视频、图片的编解码功能。</p>
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<p class="- topic/p p" data-ofbid="d137201e36__20250123155213">在 Linux 设备中，注册为字符设备，通过中间件 MPP(Media Process Platform)实现对 VE
|
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字符设备驱动的调用，实现对视频、图片多媒体文件的编解码。</p>
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<div class="table-container"><table class="- topic/table table frame-all" id="ve__table_mdr_nd3_bdc" data-ofbid="ve__table_mdr_nd3_bdc" data-cols="3"><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">术语定义</span></caption><colgroup><col style="width:20.703933747412005%"/><col style="width:37.47412008281574%"/><col style="width:41.821946169772254%"/></colgroup><thead class="- topic/thead thead">
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<tr class="- topic/row">
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<th class="- topic/entry entry colsep-1 rowsep-1" id="ve__table_mdr_nd3_bdc__entry__1">术语</th>
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||
<th class="- topic/entry entry colsep-1 rowsep-1" id="ve__table_mdr_nd3_bdc__entry__2">定义</th>
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<th class="- topic/entry entry colsep-0 rowsep-1" id="ve__table_mdr_nd3_bdc__entry__3">注释说明</th>
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||
</tr>
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||
</thead><tbody class="- topic/tbody tbody">
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_mdr_nd3_bdc__entry__1">VE</td>
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<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_mdr_nd3_bdc__entry__2">Video Engine</td>
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||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="ve__table_mdr_nd3_bdc__entry__3">视频加速引擎</td>
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||
</tr>
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||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="ve__table_mdr_nd3_bdc__entry__1">MPP</td>
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||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="ve__table_mdr_nd3_bdc__entry__2">Media Process Platform</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-0" headers="ve__table_mdr_nd3_bdc__entry__3">通用多媒体处理软件平台</td>
|
||
</tr>
|
||
</tbody></table></div>
|
||
<p class="- topic/p p" data-ofbid="d137201e96__20250123155213">VE 支持的视频编解码标准如下：</p>
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="ve__table_agl_w13_p1c" data-ofbid="ve__table_agl_w13_p1c" data-cols="6"><caption></caption><colgroup><col style="width:22.37903225806452%"/><col style="width:13.911290322580644%"/><col style="width:10.080645161290324%"/><col style="width:18.245967741935484%"/><col style="width:15.725806451612904%"/><col style="width:19.657258064516128%"/></colgroup><thead class="- topic/thead thead">
|
||
<tr class="- topic/row">
|
||
<th class="- topic/entry entry colsep-1 rowsep-1" id="ve__table_agl_w13_p1c__entry__1">标准</th>
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||
<th class="- topic/entry entry colsep-1 rowsep-1" id="ve__table_agl_w13_p1c__entry__2">Profile</th>
|
||
<th class="- topic/entry entry colsep-1 rowsep-1" id="ve__table_agl_w13_p1c__entry__3">Level</th>
|
||
<th class="- topic/entry entry colsep-1 rowsep-1" id="ve__table_agl_w13_p1c__entry__4">最大分辨率</th>
|
||
<th class="- topic/entry entry colsep-1 rowsep-1" id="ve__table_agl_w13_p1c__entry__5">最小分辨率</th>
|
||
<th class="- topic/entry entry colsep-0 rowsep-1" id="ve__table_agl_w13_p1c__entry__6">最大码率</th>
|
||
</tr>
|
||
</thead><tbody class="- topic/tbody tbody">
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__1">H264/AVC decoder</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__2">BP/MP/HP</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__3">4.2</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__4">1920x1088</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__5">16x16</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="ve__table_agl_w13_p1c__entry__6">80 Mbps</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__1">MJPEG decoder</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__2">Baseline</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__3">-</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__4">8192x8192</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__5">16x16</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="ve__table_agl_w13_p1c__entry__6">120 Mbps (YUV444)</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__1">PNG decoder</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__2">-</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__3">-</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__4">4096x4096</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_agl_w13_p1c__entry__5">-</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-1" headers="ve__table_agl_w13_p1c__entry__6">-</td>
|
||
</tr>
|
||
<tr class="- topic/row">
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="ve__table_agl_w13_p1c__entry__1">JPEG encoder</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="ve__table_agl_w13_p1c__entry__2">Baseline</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="ve__table_agl_w13_p1c__entry__3">-</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="ve__table_agl_w13_p1c__entry__4">8192x8192</td>
|
||
<td class="- topic/entry entry colsep-1 rowsep-0" headers="ve__table_agl_w13_p1c__entry__5">16x16</td>
|
||
<td class="- topic/entry entry colsep-0 rowsep-0" headers="ve__table_agl_w13_p1c__entry__6">120 Mbps (YUV444)</td>
|
||
</tr>
|
||
</tbody></table></div>
|
||
<section class="- topic/section section" id="ve__section_igz_l4l_4dc" data-ofbid="ve__section_igz_l4l_4dc"><h2 class="- topic/title title sectiontitle">特性说明</h2>
|
||
|
||
<div class="- topic/p p" data-ofbid="d137201e240__20250123155213">
|
||
<dl class="- topic/dl dl simple" id="ve__dl_odr_nd3_bdc" data-ofbid="ve__dl_odr_nd3_bdc">
|
||
|
||
<dt class="- topic/dt dt dlterm" data-ofbid="d137201e246__20250123155213">H.264/AVC 解码器:</dt>
|
||
<dd class="- topic/dd dd">
|
||
<ul class="- topic/ul ul simple" id="ve__ul_pdr_nd3_bdc" data-ofbid="ve__ul_pdr_nd3_bdc">
|
||
<li class="- topic/li li" data-ofbid="d137201e253__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e255__20250123155213">全兼容 ITU-T 建议 H.264 规定的 BP、MP 和 HP</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e259__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e261__20250123155213">支持 CABAC/CAVLC</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e265__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e267__20250123155213">支持可变块大小(16x16, 16x8, 8x16, 8x8, 8x4, 4x8 and 4x4)</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e271__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e273__20250123155213">支持错误检查</p>
|
||
</li>
|
||
</ul>
|
||
</dd>
|
||
|
||
|
||
<dt class="- topic/dt dt dlterm" data-ofbid="d137201e282__20250123155213">MJPEG 基线解码器</dt>
|
||
<dd class="- topic/dd dd">
|
||
<ul class="- topic/ul ul simple" id="ve__ul_qdr_nd3_bdc" data-ofbid="ve__ul_qdr_nd3_bdc">
|
||
<li class="- topic/li li" data-ofbid="d137201e289__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e291__20250123155213">兼容 ISO/IEC 10918-1 JPEG 基线</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e295__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e297__20250123155213">支持 1 或者 3 个颜色分量</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e301__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e303__20250123155213">支持 8 bit 位深</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e307__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e309__20250123155213">支持 4:2:0, 4:2:2, 2:2:4, 4:4:4 和 4:0:0 颜色格式(每个 MCU 包括最多 6 个
|
||
8x8 块)</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e313__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e315__20250123155213">支持 1/2、1/4、1/8 缩放</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e320__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e322__20250123155213">支持 0、90、180、270 度旋转以及水平、垂直镜像，不能和缩放同时开启</p>
|
||
</li>
|
||
</ul>
|
||
</dd>
|
||
|
||
|
||
<dt class="- topic/dt dt dlterm" data-ofbid="d137201e331__20250123155213">PNG 解码器</dt>
|
||
<dd class="- topic/dd dd">
|
||
<ul class="- topic/ul ul simple" id="ve__ul_rdr_nd3_bdc" data-ofbid="ve__ul_rdr_nd3_bdc">
|
||
<li class="- topic/li li" data-ofbid="d137201e338__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e340__20250123155213">支持 PNG8，存储方式为索引色存储，索引色位深支持 1，2，4，8 bit，索引最多 256 色，支持通过数据块
|
||
tRNS 来设置索引透明度</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e344__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e346__20250123155213">支持 PNG24，每个像素包含 R, G, B 三个通道，每个通道 8 bits</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e350__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e352__20250123155213">支持 PNG32，每个像素包含 R, G, B 和 alpha 四个通道，每个通道 8 bits</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e356__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e358__20250123155213">支持 PNG 标准 5 种 filter（none，sub，up，average，paeth）</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e362__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e364__20250123155213">支持标准的 zlib 和 gzip 解压缩，LZ77 最大窗口为 32K</p>
|
||
</li>
|
||
</ul>
|
||
</dd>
|
||
|
||
|
||
<dt class="- topic/dt dt dlterm" data-ofbid="d137201e373__20250123155213">JPEG 编码器</dt>
|
||
<dd class="- topic/dd dd">
|
||
<ul class="- topic/ul ul simple" id="ve__ul_sdr_nd3_bdc" data-ofbid="ve__ul_sdr_nd3_bdc">
|
||
<li class="- topic/li li" data-ofbid="d137201e380__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e382__20250123155213">兼容 ISO/IEC 10918-1 JPEG 基线</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e386__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e388__20250123155213">支持 1 或者 3 个颜色分量</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e392__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e394__20250123155213">支持 8 bit 位深</p>
|
||
</li>
|
||
<li class="- topic/li li" data-ofbid="d137201e398__20250123155213">
|
||
<p class="- topic/p p" data-ofbid="d137201e400__20250123155213">支持 4:2:0, 4:2:2, 2:2:4, 4:4:4 和 4:0:0 颜色格式</p>
|
||
</li>
|
||
</ul>
|
||
</dd>
|
||
|
||
</dl>
|
||
</div>
|
||
</section>
|
||
</div>
|
||
</article></main></div>
|
||
|
||
<div class=" wh_child_links d-print-none "><nav aria-label="Child Links" role="navigation" class="- topic/related-links related-links"><ul class="ullinks"><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/ve/ve-config.html">VE 配置</a></strong></li><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/ve/ve-test_guide.html">测试指南</a></strong></li><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/ve/ve_design_guide.html">设计说明</a></strong></li><li class="- topic/link link ulchildlink"><strong><a href="../../../topics/sdk/ve/ve-faq.html">常见问题</a></strong></li></ul></nav></div>
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