# 前言<a name="ZH-CN_TOPIC_0000002498234333"></a>

**概述<a name="section102mcpsimp"></a>**

本文为使用MPP媒体处理芯片进行开发的程序员而写，目的是供您在开发过程中查阅媒体处理软件开发包的各种参考信息，包括API、头文件、错误码等。

本文档描述MPP媒体处理软件的各个API的使用方法，以及相关的数据结构和错误码。

>![](public_sys-resources/icon-note.gif) **说明：** 
>未有特殊说明，SS927V100与SS928V100内容完全一致。

**产品版本<a name="section106mcpsimp"></a>**

与本文档相对应的产品版本如下。

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<table><thead align="left"><tr id="row115mcpsimp"><th class="cellrowborder" valign="top" width="22.772277227722775%" id="mcps1.1.4.1.1"><p id="p117mcpsimp"><a name="p117mcpsimp"></a><a name="p117mcpsimp"></a>产品名称</p>
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<th class="cellrowborder" valign="top" width="38.613861386138616%" id="mcps1.1.4.1.2"><p id="p119mcpsimp"><a name="p119mcpsimp"></a><a name="p119mcpsimp"></a>产品版本</p>
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<th class="cellrowborder" valign="top" width="38.613861386138616%" id="mcps1.1.4.1.3"><p id="p121mcpsimp"><a name="p121mcpsimp"></a><a name="p121mcpsimp"></a>操作系统</p>
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</thead>
<tbody><tr id="row123mcpsimp"><td class="cellrowborder" valign="top" width="22.772277227722775%" headers="mcps1.1.4.1.1 "><p id="p125mcpsimp"><a name="p125mcpsimp"></a><a name="p125mcpsimp"></a>SS928</p>
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<td class="cellrowborder" valign="top" width="38.613861386138616%" headers="mcps1.1.4.1.2 "><p id="p127mcpsimp"><a name="p127mcpsimp"></a><a name="p127mcpsimp"></a>V100</p>
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<td class="cellrowborder" valign="top" width="38.613861386138616%" headers="mcps1.1.4.1.3 "><p id="p129mcpsimp"><a name="p129mcpsimp"></a><a name="p129mcpsimp"></a>-</p>
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<tr id="row3721193314217"><td class="cellrowborder" valign="top" width="22.772277227722775%" headers="mcps1.1.4.1.1 "><p id="p8622349102117"><a name="p8622349102117"></a><a name="p8622349102117"></a>SS927</p>
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<td class="cellrowborder" valign="top" width="38.613861386138616%" headers="mcps1.1.4.1.2 "><p id="p9185184311112"><a name="p9185184311112"></a><a name="p9185184311112"></a>V100</p>
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<td class="cellrowborder" valign="top" width="38.613861386138616%" headers="mcps1.1.4.1.3 "><p id="p197218334214"><a name="p197218334214"></a><a name="p197218334214"></a>-</p>
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**读者对象<a name="section137mcpsimp"></a>**

本文档主要适用于以下工程师：

-   技术支持工程师
-   软件开发工程师

**符号约定<a name="section143mcpsimp"></a>**

在本文中可能出现下列标志，它们所代表的含义如下。

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<table><thead align="left"><tr id="row151mcpsimp"><th class="cellrowborder" valign="top" width="18%" id="mcps1.1.3.1.1"><p id="p153mcpsimp"><a name="p153mcpsimp"></a><a name="p153mcpsimp"></a>符号</p>
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<th class="cellrowborder" valign="top" width="82%" id="mcps1.1.3.1.2"><p id="p155mcpsimp"><a name="p155mcpsimp"></a><a name="p155mcpsimp"></a>说明</p>
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</thead>
<tbody><tr id="row157mcpsimp"><td class="cellrowborder" valign="top" width="18%" headers="mcps1.1.3.1.1 "><p class="msonormal" id="p159mcpsimp"><a name="p159mcpsimp"></a><a name="p159mcpsimp"></a><a name="image102"></a><a name="image102"></a><span><img id="image102" src="figures/zh-cn_image_0000002465275284.png" height="27.93" width="75.81"></span></p>
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<td class="cellrowborder" valign="top" width="82%" headers="mcps1.1.3.1.2 "><p id="p161mcpsimp"><a name="p161mcpsimp"></a><a name="p161mcpsimp"></a>表示如不避免则将会导致死亡或严重伤害的具有高等级风险的危害。</p>
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<tr id="row162mcpsimp"><td class="cellrowborder" valign="top" width="18%" headers="mcps1.1.3.1.1 "><p class="msonormal" id="p164mcpsimp"><a name="p164mcpsimp"></a><a name="p164mcpsimp"></a><a name="image103"></a><a name="image103"></a><span><img id="image103" src="figures/zh-cn_image_0000002498394633.png" height="27.93" width="75.81"></span></p>
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<td class="cellrowborder" valign="top" width="82%" headers="mcps1.1.3.1.2 "><p id="p166mcpsimp"><a name="p166mcpsimp"></a><a name="p166mcpsimp"></a>表示如不避免则可能导致死亡或严重伤害的具有中等级风险的危害。</p>
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<tr id="row167mcpsimp"><td class="cellrowborder" valign="top" width="18%" headers="mcps1.1.3.1.1 "><p class="msonormal" id="p169mcpsimp"><a name="p169mcpsimp"></a><a name="p169mcpsimp"></a><a name="image104"></a><a name="image104"></a><span><img id="image104" src="figures/zh-cn_image_0000002498234673.png" height="27.93" width="75.81"></span></p>
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<td class="cellrowborder" valign="top" width="82%" headers="mcps1.1.3.1.2 "><p id="p171mcpsimp"><a name="p171mcpsimp"></a><a name="p171mcpsimp"></a>表示如不避免则可能导致轻微或中度伤害的具有低等级风险的危害。</p>
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<tr id="row172mcpsimp"><td class="cellrowborder" valign="top" width="18%" headers="mcps1.1.3.1.1 "><p class="msonormal" id="p174mcpsimp"><a name="p174mcpsimp"></a><a name="p174mcpsimp"></a><a name="image105"></a><a name="image105"></a><span><img id="image105" src="figures/zh-cn_image_0000002465115644.png" height="27.93" width="75.81"></span></p>
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<td class="cellrowborder" valign="top" width="82%" headers="mcps1.1.3.1.2 "><p id="p176mcpsimp"><a name="p176mcpsimp"></a><a name="p176mcpsimp"></a>用于传递设备或环境安全警示信息。如不避免则可能会导致设备损坏、数据丢失、设备性能降低或其它不可预知的结果。</p>
<p id="p177mcpsimp"><a name="p177mcpsimp"></a><a name="p177mcpsimp"></a>“须知”不涉及人身伤害。</p>
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<tr id="row178mcpsimp"><td class="cellrowborder" valign="top" width="18%" headers="mcps1.1.3.1.1 "><p class="msonormal" id="p180mcpsimp"><a name="p180mcpsimp"></a><a name="p180mcpsimp"></a><a name="image106"></a><a name="image106"></a><span><img id="image106" src="figures/zh-cn_image_0000002465275292.png" height="27.93" width="75.81"></span></p>
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<td class="cellrowborder" valign="top" width="82%" headers="mcps1.1.3.1.2 "><p id="p182mcpsimp"><a name="p182mcpsimp"></a><a name="p182mcpsimp"></a>对正文中重点信息的补充说明。</p>
<p id="p183mcpsimp"><a name="p183mcpsimp"></a><a name="p183mcpsimp"></a>“说明”不是安全警示信息，不涉及人身、设备及环境伤害信息。</p>
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**修订记录<a name="section1643714414570"></a>**

修订记录累积了每次文档更新的说明。最新版本的文档包含以前所有文档版本的更新内容。

<a name="table1557726816410"></a>
<table><thead align="left"><tr id="row2942532716410"><th class="cellrowborder" valign="top" width="13.13%" id="mcps1.1.4.1.1"><p id="p3778275416410"><a name="p3778275416410"></a><a name="p3778275416410"></a><strong id="b5687322716410"><a name="b5687322716410"></a><a name="b5687322716410"></a>文档版本</strong></p>
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<th class="cellrowborder" valign="top" width="15.909999999999998%" id="mcps1.1.4.1.2"><p id="p5627845516410"><a name="p5627845516410"></a><a name="p5627845516410"></a><strong id="b5800814916410"><a name="b5800814916410"></a><a name="b5800814916410"></a>发布日期</strong></p>
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<th class="cellrowborder" valign="top" width="70.96000000000001%" id="mcps1.1.4.1.3"><p id="p2382284816410"><a name="p2382284816410"></a><a name="p2382284816410"></a><strong id="b3316380216410"><a name="b3316380216410"></a><a name="b3316380216410"></a>修改说明</strong></p>
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</thead>
<tbody><tr id="row16747317104717"><td class="cellrowborder" valign="top" width="13.13%" headers="mcps1.1.4.1.1 "><p id="p8578518112320"><a name="p8578518112320"></a><a name="p8578518112320"></a>00B03</p>
</td>
<td class="cellrowborder" valign="top" width="15.909999999999998%" headers="mcps1.1.4.1.2 "><p id="p1057831812319"><a name="p1057831812319"></a><a name="p1057831812319"></a>2025-12-25</p>
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<td class="cellrowborder" valign="top" width="70.96000000000001%" headers="mcps1.1.4.1.3 "><p id="p16831912142310"><a name="p16831912142310"></a><a name="p16831912142310"></a>第3次临时版本发布</p>
<p id="p1972631682219"><a name="p1972631682219"></a><a name="p1972631682219"></a><strong id="b1746652252216"><a name="b1746652252216"></a><a name="b1746652252216"></a>第3章 视频输入</strong></p>
<p id="p1764814102410"><a name="p1764814102410"></a><a name="p1764814102410"></a>新增ss_mpi_vi_chn_set_zoom_in_window、ss_mpi_vi_chn_get_zoom_in_window</p>
<p id="p1431334515489"><a name="p1431334515489"></a><a name="p1431334515489"></a><strong id="b1060314527485"><a name="b1060314527485"></a><a name="b1060314527485"></a>第6章 视频编码</strong></p>
<p id="p4569205374814"><a name="p4569205374814"></a><a name="p4569205374814"></a>ot_venc_h265_adv_stream_info【注意事项】涉及修改。</p>
</td>
</tr>
<tr id="row153738587189"><td class="cellrowborder" valign="top" width="13.13%" headers="mcps1.1.4.1.1 "><p id="p543197181912"><a name="p543197181912"></a><a name="p543197181912"></a>00B02</p>
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<td class="cellrowborder" valign="top" width="15.909999999999998%" headers="mcps1.1.4.1.2 "><p id="p644179197"><a name="p644179197"></a><a name="p644179197"></a>2025-11-15</p>
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<td class="cellrowborder" valign="top" width="70.96000000000001%" headers="mcps1.1.4.1.3 "><p id="p94411731910"><a name="p94411731910"></a><a name="p94411731910"></a>第2次临时版本发布</p>
<p id="p10276191102814"><a name="p10276191102814"></a><a name="p10276191102814"></a><strong id="b20276141112287"><a name="b20276141112287"></a><a name="b20276141112287"></a>第6章 视频编码</strong></p>
<p id="p11276151192818"><a name="p11276151192818"></a><a name="p11276151192818"></a>ss_mpi_venc_attach_vb_pool【参数】涉及修改。</p>
<p id="p112451748103115"><a name="p112451748103115"></a><a name="p112451748103115"></a>ss_mpi_venc_get_jpeg_roi_attr【描述】涉及修改。</p>
<p id="p2551182115333"><a name="p2551182115333"></a><a name="p2551182115333"></a>ot_venc_jpege_pack_type、ot_venc_h265_adv_stream_info【注意事项】涉及修改。</p>
<p id="p17660558153910"><a name="p17660558153910"></a><a name="p17660558153910"></a>ot_venc_skip_bias【成员】涉及修改。</p>
<p id="p187911659125716"><a name="p187911659125716"></a><a name="p187911659125716"></a><strong id="b177914596570"><a name="b177914596570"></a><a name="b177914596570"></a>第13章 Proc调试信息</strong></p>
<p id="p15791759175716"><a name="p15791759175716"></a><a name="p15791759175716"></a>“LOG”【调试信息分析】涉及修改。</p>
</td>
</tr>
<tr id="row112061230185811"><td class="cellrowborder" valign="top" width="13.13%" headers="mcps1.1.4.1.1 "><p id="p235mcpsimp"><a name="p235mcpsimp"></a><a name="p235mcpsimp"></a>00B01</p>
</td>
<td class="cellrowborder" valign="top" width="15.909999999999998%" headers="mcps1.1.4.1.2 "><p id="p233mcpsimp"><a name="p233mcpsimp"></a><a name="p233mcpsimp"></a>2025-09-15</p>
</td>
<td class="cellrowborder" valign="top" width="70.96000000000001%" headers="mcps1.1.4.1.3 "><p id="p237mcpsimp"><a name="p237mcpsimp"></a><a name="p237mcpsimp"></a>第1次临时版本发布</p>
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