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role="treeitem" aria-expanded="false"><div data-tocid="mpp_0-d5856e4495" class="topicref" data-id="mpp_0" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action mpp_0-d5856e4495-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mpp/mpp_player_user_guide_2.html" id="mpp_0-d5856e4495-link">MPP 播放器使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e4579" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e4579-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mpp/mpp_recorder_user_guide.html" id="id-d5856e4579-link">MPP 录像使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e4651" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e4651-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/mpp/mini_audio_player_user_guide.html" id="id-d5856e4651-link">MPP 音频播放器使用指南</a></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="id-d5856e4724" class="topicref" data-id="id" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action id-d5856e4724-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/sdk/lvgl/lvgl_introduction.html" id="id-d5856e4724-link">LVGL 使用指南</a></div></div></li></ul></li><li role="treeitem" aria-expanded="false"><div data-tocid="concept_nww_hzh_pzb-d5856e4868" class="topicref" data-id="concept_nww_hzh_pzb" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action concept_nww_hzh_pzb-d5856e4868-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-interface-sdk.html" id="concept_nww_hzh_pzb-d5856e4868-link">接口</a><div class="wh-tooltip"><p class="shortdesc">CAN<span class="ph">、CAP</span>、CIR、GPAI、GPIO、I2C、PSADC、PWM 等接口模块的介绍和使用说明。</p></div></div></div></li><li role="treeitem" aria-expanded="false"><div data-tocid="chapter-safety-d5856e6083" class="topicref" data-id="chapter-safety" data-state="not-ready"><span role="button" tabindex="0" aria-labelledby="button-expand-action chapter-safety-d5856e6083-link" class="wh-expand-btn"></span><div class="title"><a href="../../../topics/chapter-title/chapter-safety-sdk.html" id="chapter-safety-d5856e6083-link">安全</a><div class="wh-tooltip"><p class="shortdesc">SPI ENC、CE、eFuse 等安全模块的介绍和使用说明。</p></div></div></div></li></ul></li></ul></div>
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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/mpp/mpp_ge_design_lite.dita">Edit online</a></span><h1 class="- topic/title title topictitle1" id="ariaid-title1">MPP GE 设计及接口说明</h1><div class="date inPage">15 Jan 2024</div><div style="color: gray;">
|
||
Read time: 2 minute(s)
|
||
</div><div class="- topic/body concept/conbody body conbody"><p class="- topic/p p" data-ofbid="d320524e26__20250121171825">由于驱动支持非命令队列和命令队列两种模式，在提供的用户 MPP 接口中，对调用驱动的接口进行了封装，保持了统一的调用 API， 建议用户统一使用 MPP 中间层
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||
API。在命令队列模式下，task 会先缓存在用户的 cmd buffer 中，当调用 mpp_ge_emit 后， 会通过 write 接口把命令写入内核的 ring
|
||
buffer。</p><figure class="- topic/fig fig fignone" id="mpp-ge-design__id19" data-ofbid="mpp-ge-design__id19"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="mpp-ge-design__image_hvn_2nt_2dc" src="../../../images/ge/ge_function_call_mpp.png" width="480" alt="ge_call_mpp"/></div><br/><figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 1</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">应用调用 MPP 框架</span></figcaption></figure><section class="- topic/section section" id="mpp-ge-design__mpp-ge-open" data-ofbid="mpp-ge-design__mpp-ge-open"><h2 class="- topic/title title sectiontitle">mpp_ge_open</h2>
|
||
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||
<div class="table-container"><table class="- topic/table table frame-all" id="mpp-ge-design__table_ivn_2nt_2dc" data-ofbid="mpp-ge-design__table_ivn_2nt_2dc" data-cols="2"><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"></span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="mpp-ge-design__table_ivn_2nt_2dc__entry__1">功能说明</th><th class="- topic/entry entry colsep-0 rowsep-1" id="mpp-ge-design__table_ivn_2nt_2dc__entry__2">打开 ge 设备</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_ivn_2nt_2dc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_ivn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">无</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_ivn_2nt_2dc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_ivn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">struct mpp_ge 结构体指针</div>
|
||
<div class="- topic/div div">NULL：失败</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="mpp-ge-design__table_ivn_2nt_2dc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="mpp-ge-design__table_ivn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">无</div>
|
||
</div>
|
||
</td></tr></tbody></table></div>
|
||
</section><section class="- topic/section section" id="mpp-ge-design__mpp-ge-close" data-ofbid="mpp-ge-design__mpp-ge-close"><h2 class="- topic/title title sectiontitle">mpp_ge_close</h2>
|
||
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="mpp-ge-design__table_jvn_2nt_2dc" data-ofbid="mpp-ge-design__table_jvn_2nt_2dc" data-cols="2"><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"></span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="mpp-ge-design__table_jvn_2nt_2dc__entry__1">功能说明</th><th class="- topic/entry entry colsep-0 rowsep-1" id="mpp-ge-design__table_jvn_2nt_2dc__entry__2">关闭 ge 设备</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_jvn_2nt_2dc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_jvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">ge</span>: struct mpp_ge 结构体指针</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_jvn_2nt_2dc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_jvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">无</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="mpp-ge-design__table_jvn_2nt_2dc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="mpp-ge-design__table_jvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">无</div>
|
||
</div>
|
||
</td></tr></tbody></table></div>
|
||
</section><section class="- topic/section section" id="mpp-ge-design__mpp-ge-get-mode" data-ofbid="mpp-ge-design__mpp-ge-get-mode"><h2 class="- topic/title title sectiontitle">mpp_ge_get_mode</h2>
|
||
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="mpp-ge-design__table_kvn_2nt_2dc" data-ofbid="mpp-ge-design__table_kvn_2nt_2dc" data-cols="2"><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"> 3</span><span class="table--title-label-punctuation">. </span></span><span class="table--title"></span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="mpp-ge-design__table_kvn_2nt_2dc__entry__1">功能说明</th><th class="- topic/entry entry colsep-0 rowsep-1" id="mpp-ge-design__table_kvn_2nt_2dc__entry__2">获取 GE 模式</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_kvn_2nt_2dc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_kvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">ge</span>: struct mpp_ge 结构体指针</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_kvn_2nt_2dc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_kvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">enum ge_mode 枚举类型</div>
|
||
<div class="- topic/div div"> 通过返回值可以获取 GE 是否工作在命令队列</div>
|
||
<div class="- topic/div div">模式</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="mpp-ge-design__table_kvn_2nt_2dc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="mpp-ge-design__table_kvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">无</div>
|
||
</div>
|
||
</td></tr></tbody></table></div>
|
||
</section><section class="- topic/section section" id="mpp-ge-design__mpp-ge-fillrect" data-ofbid="mpp-ge-design__mpp-ge-fillrect"><h2 class="- topic/title title sectiontitle">mpp_ge_fillrect</h2>
|
||
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="mpp-ge-design__table_lvn_2nt_2dc" data-ofbid="mpp-ge-design__table_lvn_2nt_2dc" data-cols="2"><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"> 4</span><span class="table--title-label-punctuation">. </span></span><span class="table--title"></span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="mpp-ge-design__table_lvn_2nt_2dc__entry__1">功能说明</th><th class="- topic/entry entry colsep-0 rowsep-1" id="mpp-ge-design__table_lvn_2nt_2dc__entry__2">矩形填充</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_lvn_2nt_2dc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_lvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">ge</span>: struct mpp_ge 结构体指针</div>
|
||
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">fillrect</span>: struct ge_fillrect 结构体指针</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_lvn_2nt_2dc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_lvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">0：成功</div>
|
||
<div class="- topic/div div"><0：失败</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="mpp-ge-design__table_lvn_2nt_2dc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="mpp-ge-design__table_lvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> normal（非命令队列）模式此接口是同步</div>
|
||
<div class="- topic/div div">的。</div>
|
||
<div class="- topic/div div"> 命令队列模式此接口是异步的：</div>
|
||
<div class="- topic/div div"> （1）当用户的缓存 buffer 足够时候仅把</div>
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> 命令缓存在用户</div>
|
||
</div>
|
||
<div class="- topic/div div"> （2）当用户的缓存空间不够的时候，先</div>
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> 通过 write 接口，把缓存的命令全部</div>
|
||
<div class="- topic/div div"> 写入驱动，然后再把当前命令缓存到</div>
|
||
<div class="- topic/div div">用户 buffer</div>
|
||
</div>
|
||
</div>
|
||
</td></tr></tbody></table></div>
|
||
<p class="- topic/p p" data-ofbid="d320524e292__20250121171825">矩形填充在目标图像中指定一块矩形区域，填充颜色格式只能为 ARGB8888 格式， 在进行固定颜色填充的时候，不支持 scaler，不支持 90/180/270
|
||
度旋转，不支持镜像， 填充的颜色可以和目标层进行 alpha blending 和 color key。</p>
|
||
<figure class="- topic/fig fig fignone" id="mpp-ge-design__id20" data-ofbid="mpp-ge-design__id20"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="mpp-ge-design__image_mvn_2nt_2dc" src="../../../images/mpp/ge_function_fill1.png" alt="ge_function_fill1"/></div><br/><figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 2</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">矩形填充</span></figcaption></figure>
|
||
</section><section class="- topic/section section" id="mpp-ge-design__mpp-ge-bitblt" data-ofbid="mpp-ge-design__mpp-ge-bitblt"><h2 class="- topic/title title sectiontitle">mpp_ge_bitblt</h2>
|
||
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="mpp-ge-design__table_nvn_2nt_2dc" data-ofbid="mpp-ge-design__table_nvn_2nt_2dc" data-cols="2"><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"> 5</span><span class="table--title-label-punctuation">. </span></span><span class="table--title"></span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="mpp-ge-design__table_nvn_2nt_2dc__entry__1">功能说明</th><th class="- topic/entry entry colsep-0 rowsep-1" id="mpp-ge-design__table_nvn_2nt_2dc__entry__2">位块搬移</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_nvn_2nt_2dc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_nvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">ge</span>: struct mpp_ge 结构体指针</div>
|
||
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">blt</span>: struct ge_bitblt 结构体指针</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_nvn_2nt_2dc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_nvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">0：成功</div>
|
||
<div class="- topic/div div"><0：失败</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="mpp-ge-design__table_nvn_2nt_2dc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="mpp-ge-design__table_nvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> normal（非命令队列）模式此接口是同步</div>
|
||
<div class="- topic/div div">的。</div>
|
||
<div class="- topic/div div"> 命令队列模式此接口是异步的：</div>
|
||
<div class="- topic/div div"> （1）当用户的缓存 buffer 足够时候仅把</div>
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> 命令缓存在用户</div>
|
||
</div>
|
||
<div class="- topic/div div"> （2）当用户的缓存空间不够的时候，先</div>
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> 通过 write 接口，把缓存的命令全部</div>
|
||
<div class="- topic/div div"> 写入驱动，然后再把当前命令缓存到</div>
|
||
<div class="- topic/div div">用户 buffer</div>
|
||
</div>
|
||
</div>
|
||
</td></tr></tbody></table></div>
|
||
<p class="- topic/p p" data-ofbid="d320524e394__20250121171825">位块搬移可以分两种情况：</p>
|
||
<ol class="- topic/ol ol arabic simple" id="mpp-ge-design__ol_ovn_2nt_2dc" data-ofbid="mpp-ge-design__ol_ovn_2nt_2dc"><li class="- topic/li li" data-ofbid="d320524e398__20250121171825">
|
||
<p class="- topic/p p" data-ofbid="d320524e400__20250121171825">原图的矩形区域搬移到目标图的矩形区域中不进行缩放</p>
|
||
<figure class="- topic/fig fig fignone" id="mpp-ge-design__id21" data-ofbid="mpp-ge-design__id21"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="mpp-ge-design__image_pvn_2nt_2dc" src="../../../images/mpp/ge_function_blit1.png" alt="ge_function_blit1"/></div><br/><figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 3</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">不进行缩放</span></figcaption></figure>
|
||
</li><li class="- topic/li li" data-ofbid="d320524e410__20250121171825">
|
||
<p class="- topic/p p" data-ofbid="d320524e412__20250121171825">原图的矩形区域搬移到目标图的矩形区域中同时进行放大或者缩小</p>
|
||
<figure class="- topic/fig fig fignone" id="mpp-ge-design__id22" data-ofbid="mpp-ge-design__id22"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="mpp-ge-design__image_rvn_2nt_2dc" src="../../../images/mpp/ge_function_stretchblit1.png" alt="ge_function_stretchblit1"/></div><br/><figcaption data-caption-side="bottom" class="- topic/title title figcapcenter"><span class="figtitleprefix fig--title-label">图<span class="fig--title-label-number"> 4</span><span class="fig--title-label-punctuation">. </span></span><span class="fig--title">进行缩放</span></figcaption></figure>
|
||
</li></ol>
|
||
<p class="- topic/p p" data-ofbid="d320524e423__20250121171825">在进行位块搬移的同时可以进行 alpha blending 和 color key，同时也支持 90/180/270 度旋转和镜像。</p>
|
||
</section><section class="- topic/section section" id="mpp-ge-design__mpp-ge-rotate" data-ofbid="mpp-ge-design__mpp-ge-rotate"><h2 class="- topic/title title sectiontitle">mpp_ge_rotate</h2>
|
||
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="mpp-ge-design__table_svn_2nt_2dc" data-ofbid="mpp-ge-design__table_svn_2nt_2dc" data-cols="2"><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"> 6</span><span class="table--title-label-punctuation">. </span></span><span class="table--title"></span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="mpp-ge-design__table_svn_2nt_2dc__entry__1">功能说明</th><th class="- topic/entry entry colsep-0 rowsep-1" id="mpp-ge-design__table_svn_2nt_2dc__entry__2">任意角度旋转</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_svn_2nt_2dc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_svn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">ge</span>: struct mpp_ge 结构体指针</div>
|
||
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">rot</span>: struct ge_rotation 结构体指针</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_svn_2nt_2dc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_svn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">0：成功</div>
|
||
<div class="- topic/div div"><0：失败</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="mpp-ge-design__table_svn_2nt_2dc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="mpp-ge-design__table_svn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> normal（非命令队列）模式此接口是同步</div>
|
||
<div class="- topic/div div">的。</div>
|
||
<div class="- topic/div div"> 命令队列模式此接口是异步的：</div>
|
||
<div class="- topic/div div"> （1）当用户的缓存 buffer 足够时候仅把</div>
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> 命令缓存在用户</div>
|
||
</div>
|
||
<div class="- topic/div div"> （2）当用户的缓存空间不够的时候，先</div>
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> 通过 write 接口，把缓存的命令全部</div>
|
||
<div class="- topic/div div"> 写入驱动，然后再把当前命令缓存到</div>
|
||
<div class="- topic/div div">用户 buffer</div>
|
||
</div>
|
||
</div>
|
||
</td></tr></tbody></table></div>
|
||
<p class="- topic/p p" data-ofbid="d320524e518__20250121171825">进行任意角度旋转的时候可以进行 alpha blending，并且可以指定原图和目标图的旋转中心，任意角度旋转原图和目标图都只支持 RGB 格式。
|
||
其中旋转角度传给驱动的是旋转角度的 sin 和 cos 值，为 2.12 定点数，其中小数部分 12 bits ，则应用程序计算 sin 和 cos
|
||
值的方法如下：</p>
|
||
<figure class="- topic/fig fig fignone" id="mpp-ge-design__fig_tvn_2nt_2dc" data-ofbid="mpp-ge-design__fig_tvn_2nt_2dc"><br/><div class="imagecenter"><img class="- topic/image image imagecenter" id="mpp-ge-design__image_uvn_2nt_2dc" src="../../../images/ge/ge_function_rot.png" alt="ge_function_rot"/></div><br/></figure>
|
||
</section><section class="- topic/section section" id="mpp-ge-design__mpp-ge-emit" data-ofbid="mpp-ge-design__mpp-ge-emit"><h2 class="- topic/title title sectiontitle">mpp_ge_emit</h2>
|
||
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="mpp-ge-design__table_vvn_2nt_2dc" data-ofbid="mpp-ge-design__table_vvn_2nt_2dc" data-cols="2"><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"> 7</span><span class="table--title-label-punctuation">. </span></span><span class="table--title"></span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="mpp-ge-design__table_vvn_2nt_2dc__entry__1">功能说明</th><th class="- topic/entry entry colsep-0 rowsep-1" id="mpp-ge-design__table_vvn_2nt_2dc__entry__2">向驱动发送命令</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_vvn_2nt_2dc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_vvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">ge</span>: struct mpp_ge 结构体指针</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_vvn_2nt_2dc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_vvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">0：成功</div>
|
||
<div class="- topic/div div"><0：失败</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="mpp-ge-design__table_vvn_2nt_2dc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="mpp-ge-design__table_vvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> normal（非命令队列）模式此接口为空，</div>
|
||
<div class="- topic/div div"> 不产生任何作用</div>
|
||
<div class="- topic/div div"> 命令队列模式此接口通过 write 接口，</div>
|
||
<div class="- topic/div div"> 把用户 buffer 中缓存的命令都写入驱动</div>
|
||
</div>
|
||
</td></tr></tbody></table></div>
|
||
</section><section class="- topic/section section" id="mpp-ge-design__mpp-ge-sync" data-ofbid="mpp-ge-design__mpp-ge-sync"><h2 class="- topic/title title sectiontitle">mpp_ge_sync</h2>
|
||
|
||
<div class="table-container"><table class="- topic/table table frame-all" id="mpp-ge-design__table_wvn_2nt_2dc" data-ofbid="mpp-ge-design__table_wvn_2nt_2dc" data-cols="2"><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"> 8</span><span class="table--title-label-punctuation">. </span></span><span class="table--title"></span></caption><colgroup><col style="width:16.666666666666664%"/><col style="width:83.33333333333334%"/></colgroup><thead class="- topic/thead thead"><tr class="- topic/row"><th class="- topic/entry entry colsep-1 rowsep-1" id="mpp-ge-design__table_wvn_2nt_2dc__entry__1">功能说明</th><th class="- topic/entry entry colsep-0 rowsep-1" id="mpp-ge-design__table_wvn_2nt_2dc__entry__2">阻塞等待所有任务执行完成</th></tr></thead><tbody class="- topic/tbody tbody"><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_wvn_2nt_2dc__entry__1">参数定义</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_wvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"><span class="+ topic/keyword pr-d/parmname keyword parmname">ge</span>: struct mpp_ge 结构体指针</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-1" headers="mpp-ge-design__table_wvn_2nt_2dc__entry__1">返回值</td><td class="- topic/entry entry colsep-0 rowsep-1" headers="mpp-ge-design__table_wvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div">0：成功</div>
|
||
<div class="- topic/div div"><0：失败</div>
|
||
</div>
|
||
</td></tr><tr class="- topic/row"><td class="- topic/entry entry colsep-1 rowsep-0" headers="mpp-ge-design__table_wvn_2nt_2dc__entry__1">注意事项</td><td class="- topic/entry entry colsep-0 rowsep-0" headers="mpp-ge-design__table_wvn_2nt_2dc__entry__2">
|
||
<div class="- topic/div div">
|
||
<div class="- topic/div div"> normal（非命令队列）模式此接口为空，</div>
|
||
<div class="- topic/div div"> 不产生任何作用</div>
|
||
<div class="- topic/div div"> 命令队列模式此接口通过调用 IOC_GE_SYNC</div>
|
||
<div class="- topic/div div"> 接口，等待所有任务都完成</div>
|
||
</div>
|
||
</td></tr></tbody></table></div>
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<div class=" wh_topic_toc "><div class="wh_topic_label">在本页上</div><ul><li class="section-item"><div class="section-title"><a href="#mpp-ge-design__mpp-ge-open" data-tocid="mpp-ge-design__mpp-ge-open">mpp_ge_open</a></div></li><li class="section-item"><div class="section-title"><a href="#mpp-ge-design__mpp-ge-close" data-tocid="mpp-ge-design__mpp-ge-close">mpp_ge_close</a></div></li><li class="section-item"><div class="section-title"><a href="#mpp-ge-design__mpp-ge-get-mode" data-tocid="mpp-ge-design__mpp-ge-get-mode">mpp_ge_get_mode</a></div></li><li class="section-item"><div class="section-title"><a href="#mpp-ge-design__mpp-ge-fillrect" data-tocid="mpp-ge-design__mpp-ge-fillrect">mpp_ge_fillrect</a></div></li><li class="section-item"><div class="section-title"><a href="#mpp-ge-design__mpp-ge-bitblt" data-tocid="mpp-ge-design__mpp-ge-bitblt">mpp_ge_bitblt</a></div></li><li class="section-item"><div class="section-title"><a href="#mpp-ge-design__mpp-ge-rotate" data-tocid="mpp-ge-design__mpp-ge-rotate">mpp_ge_rotate</a></div></li><li class="section-item"><div class="section-title"><a href="#mpp-ge-design__mpp-ge-emit" data-tocid="mpp-ge-design__mpp-ge-emit">mpp_ge_emit</a></div></li><li class="section-item"><div class="section-title"><a href="#mpp-ge-design__mpp-ge-sync" data-tocid="mpp-ge-design__mpp-ge-sync">mpp_ge_sync</a></div></li></ul></div>
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