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<div class=" wh_topic_content body "><main role="main"><article class="- topic/topic concept/concept topic concept" 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/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><div class="date inPage">2 Dec 2024</div><div style="color: gray;">
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Read time: 2 minute(s)
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</div><div class="- topic/body concept/conbody body conbody" id="ve__conbody_d3b_db3_p1c"><p class="- topic/p p" data-ofbid="d288045e22__20250121171756">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><p class="- topic/p p" data-ofbid="d288045e24__20250121171756">在 RTOS 系统中，中间件 Media Process Platform (MPP) 直接调用 VE 的 drv
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层驱动接口，实现对视频、图片多媒体文件的编解码。</p><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"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="ve__table_mdr_nd3_bdc__entry__1">术语</th><th class="- topic/entry entry colsep-1 rowsep-1" id="ve__table_mdr_nd3_bdc__entry__2">定义</th><th class="- topic/entry entry colsep-0 rowsep-1" id="ve__table_mdr_nd3_bdc__entry__3">注释说明</th></tr></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><td class="- topic/entry entry colsep-1 rowsep-1" headers="ve__table_mdr_nd3_bdc__entry__2">Video Engine</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="ve__table_mdr_nd3_bdc__entry__3">视频加速引擎</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="ve__table_mdr_nd3_bdc__entry__1">MPP</td><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="d288045e56__20250121171756">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><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>
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<div class="- topic/p p" data-ofbid="d288045e138__20250121171756">
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<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="d288045e142__20250121171756">H.264/AVC 解码器:</dt><dd class="- topic/dd dd">
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<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="d288045e147__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e149__20250121171756">全兼容 ITU-T 建议 H.264 规定的 BP、MP 和 HP</p>
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</li><li class="- topic/li li" data-ofbid="d288045e152__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e154__20250121171756">支持 CABAC/CAVLC</p>
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</li><li class="- topic/li li" data-ofbid="d288045e157__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e159__20250121171756">支持可变块大小(16x16, 16x8, 8x16, 8x8, 8x4, 4x8 and 4x4)</p>
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</li><li class="- topic/li li" data-ofbid="d288045e162__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e164__20250121171756">支持错误检查</p>
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</li></ul>
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</dd><dt class="- topic/dt dt dlterm" data-ofbid="d288045e169__20250121171756">MJPEG 基线解码器</dt><dd class="- topic/dd dd">
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<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="d288045e174__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e176__20250121171756">兼容 ISO/IEC 10918-1 JPEG 基线</p>
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</li><li class="- topic/li li" data-ofbid="d288045e179__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e181__20250121171756">支持 1 或者 3 个颜色分量</p>
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</li><li class="- topic/li li" data-ofbid="d288045e184__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e186__20250121171756">支持 8 bit 位深</p>
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</li><li class="- topic/li li" data-ofbid="d288045e189__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e191__20250121171756">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
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8x8 块)</p>
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</li><li class="- topic/li li" data-ofbid="d288045e194__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e196__20250121171756">支持 1/2、1/4、1/8 缩放</p>
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</li><li class="- topic/li li" data-ofbid="d288045e199__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e201__20250121171756">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>
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</li></ul>
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</dd><dt class="- topic/dt dt dlterm" data-ofbid="d288045e206__20250121171756">PNG 解码器</dt><dd class="- topic/dd dd">
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<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="d288045e211__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e213__20250121171756">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
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tRNS 来设置索引透明度</p>
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</li><li class="- topic/li li" data-ofbid="d288045e216__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e218__20250121171756">支持 PNG24，每个像素包含 R, G, B 三个通道，每个通道 8 bits</p>
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</li><li class="- topic/li li" data-ofbid="d288045e221__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e223__20250121171756">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>
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</li><li class="- topic/li li" data-ofbid="d288045e226__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e228__20250121171756">支持 PNG 标准 5 种 filter（none，sub，up，average，paeth）</p>
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</li><li class="- topic/li li" data-ofbid="d288045e231__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e233__20250121171756">支持标准的 zlib 和 gzip 解压缩，LZ77 最大窗口为 32K</p>
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</li></ul>
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</dd><dt class="- topic/dt dt dlterm" data-ofbid="d288045e238__20250121171756">JPEG 编码器</dt><dd class="- topic/dd dd">
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<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="d288045e243__20250121171756">
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||
<p class="- topic/p p" data-ofbid="d288045e245__20250121171756">兼容 ISO/IEC 10918-1 JPEG 基线</p>
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||
</li><li class="- topic/li li" data-ofbid="d288045e248__20250121171756">
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||
<p class="- topic/p p" data-ofbid="d288045e250__20250121171756">支持 1 或者 3 个颜色分量</p>
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</li><li class="- topic/li li" data-ofbid="d288045e253__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e255__20250121171756">支持 8 bit 位深</p>
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</li><li class="- topic/li li" data-ofbid="d288045e258__20250121171756">
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<p class="- topic/p p" data-ofbid="d288045e260__20250121171756">支持 4:2:0, 4:2:2, 2:2:4, 4:4:4 和 4:0:0 颜色格式</p>
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</li></ul>
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</dd></dl>
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</div>
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</section></div></article></main></div>
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</div><div>
|
||
<div class="generation_time">
|
||
Update Time: 2025-01-21
|
||
</div>
|
||
</div>
|
||
</div>
|
||
</footer>
|
||
|
||
<div id="go2top" class="d-print-none">
|
||
<span class="oxy-icon oxy-icon-up"></span>
|
||
</div>
|
||
|
||
<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>
|
||
|
||
|
||
<script src="${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer="defer"></script>
|
||
|
||
|
||
</body>
|
||
</html> |