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<ol class="chapter"><li class="chapter-item expanded "><a href="1.illustrate.html"><strong aria-hidden="true">1.</strong> 项目简介</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="1.1.Design.html"><strong aria-hidden="true">1.1.</strong> 方案设计</a></li><li class="chapter-item expanded "><a href="1.2.Plan.html"><strong aria-hidden="true">1.2.</strong> 开发计划与进展</a></li><li class="chapter-item expanded "><a href="1.3.explain.html"><strong aria-hidden="true">1.3.</strong> 项目分工与目录说明</a></li></ol></li><li class="chapter-item expanded "><a href="2.Bitcomet_Design.html" class="active"><strong aria-hidden="true">2.</strong> Bitcomet设计文档</a></li><li><ol class="section"><li class="chapter-item expanded "><a href="2.1.Bitcomet方案概述.html"><strong aria-hidden="true">2.1.</strong> Bitcomet方案分析</a></li><li class="chapter-item expanded "><a href="2.2.Bitcomet方案设计与主要工作.html"><strong aria-hidden="true">2.2.</strong> Bitcomet方案设计与主要工作</a></li></ol></li><li class="chapter-item expanded "><div><strong aria-hidden="true">3.</strong> Bitcomet实现</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="3.1安卓图形架构中的HAL模块.html"><strong aria-hidden="true">3.1.</strong> Bitcomet图形架构HAL模块实现</a></li><li class="chapter-item expanded "><a href="3.2关于Anbox中图形渲染分析与总结.html"><strong aria-hidden="true">3.2.</strong> Bitcomet图形渲染实现</a></li><li class="chapter-item expanded "><a href="3.3Anbox实现分析-容器管理服务.html"><strong aria-hidden="true">3.3.</strong> Anbox分析资料：Anbox容器管理服务</a></li><li class="chapter-item expanded "><a href="3.4.Anbox实现分析-IO模型.html"><strong aria-hidden="true">3.4.</strong> Anbox分析资料：IO 模型</a></li><li class="chapter-item expanded "><a href="3.5.Anbox实现分析-会话管理器与容器管理器的通信.html"><strong aria-hidden="true">3.5.</strong> Anbox分析资料：会话管理器与容器管理器的通信</a></li></ol></li><li class="chapter-item expanded "><a href="4.Bitcomet实验测试.html"><strong aria-hidden="true">4.</strong> Bitcomet实验测试</a></li><li class="chapter-item expanded "><a href="5.run.html"><strong aria-hidden="true">5.</strong> 使用教程</a></li><li class="chapter-item expanded "><div><strong aria-hidden="true">6.</strong> 项目记录</div></li><li><ol class="section"><li class="chapter-item expanded "><a href="6.1.record.html"><strong aria-hidden="true">6.1.</strong> 问题记录与总结</a></li><li class="chapter-item expanded "><a href="6.2.experience.html"><strong aria-hidden="true">6.2.</strong> 比赛收获</a></li></ol></li><li class="chapter-item expanded "><a href="7.Bitcomet未来展望与参考文献.html"><strong aria-hidden="true">7.</strong> Bitcomet未来展望与参考文献</a></li></ol>
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<h1 id="2-bitcomet设计开发文档"><a class="header" href="#2-bitcomet设计开发文档">2. Bitcomet设计开发文档</a></h1>
<h2 id="简介"><a class="header" href="#简介">简介</a></h2>
<p> Bitcomet是一个基于原有Anbox向Android 11移植实现一种基于Linux系统运行Android 11的解决方案，以下均<strong>称呼</strong>为<strong>Bitcomet</strong>。其主要与原有Anbox的<strong>改进点</strong>在于Android所运行的环境由LXC实现变为更加主流的Docker实现，原有在Anbox不再更新的Android 7更新为Android 11。此外，为了让Android 11能在Docker中运行，本项目针对其<strong>SDcard的文件系统挂载机制</strong>、<strong>SELinux安全机制</strong>等进行了相应的移植与优化。为了让Android能在Linux上满足正常使用以及调用GPU进行渲染的需求，本项目<strong>参考并移植</strong>原有Anbox以及Google安卓模拟器中的相关实现，在移植并搭建起Anbox的跨系统环境通信基础上，使相应的<strong>Android各类接口打通到外部Linux</strong>，其中最基础的包括<u>图形渲染、图形输出、键鼠输入</u>这三个部分的接口。</p>
<p> 本项目主要还是基于Anbox来参考实现，旨在完成以下四个目标：</p>
<ul>
<li><strong>目标1</strong>：完成Android11的<strong>SDcard的文件系统挂载机制</strong>、<strong>SELinux安全机制、非特权模式下运行处理</strong>对应在Docker容器环境内的处理。</li>
<li><strong>目标2</strong>：配置安卓项目工程，实现并配置好各个需要的系统模块和AIDL、HIDL、HAL模块，搭建初步调试与测试的Demo1版本，使用adb配合Scrcpy对内部Android远程访问以方便有个初步预期，并且方便本项目有个初步测试的环境。</li>
<li><strong>目标3</strong>：完成Anbox通信部分实现向Android 11的移植，使Android能与Anbox外部实现跨系统环境通信。</li>
<li><strong>目标4</strong>：完成Anbox安卓其余部分的各个模块移植，使Android的三个基础部分OpenGL、HWC图形输出、键鼠输入能正常工作。</li>
</ul>
<p> 目前，我们的赛题完成度如下：</p>
<center>表2.1 赛题完成度</center>
<div class="table-wrapper"><table><thead><tr><th style="text-align: center">目标编号</th><th style="text-align: center">基本完成情况</th><th>额外说明</th></tr></thead><tbody>
<tr><td style="text-align: center">1</td><td style="text-align: center">基本完成（≈85%）</td><td>1. 与SDcard以及SELinux组件相关的Android 11的基本功能、SDcard文件管理、安装第三方软件、闹铃与联系人等基础应用测试均通过。<br/>2. 非特权模式仅做了部分处理，未进行测试。</td></tr>
<tr><td style="text-align: center">2</td><td style="text-align: center">基本完成（≈90%）</td><td>1. 搭建好相关容器，进行相关基础测试并通过。<br/>2. 目前网络部分由于在Docker特权模式下运行，可能会有Bug。</td></tr>
<tr><td style="text-align: center">3</td><td style="text-align: center">初步完成（≈80%）</td><td>1. 完成跨系统环境通信，安卓中Anbox的相关模块可以使用QEMU_PIPE（实际容器中是没有QEMU设备，而是使用了Unix Domain Socket代替，但其通信的相关通道仍然叫做QEMU PIPE）进行通信或者使用Anbox实现的RPC调用。<br/>2. Anbox的OpenGL ES的emulation库实现初步测试能通过该通信创建QEMU_PIPE连接，实现RPC调用获取到主机侧支持的OpenGL信息。<br/>3. 由于各个部分的模块暂未完全移植好，还需要全部移植才能测试所有功能。</td></tr>
<tr><td style="text-align: center">4</td><td style="text-align: center">初步测试（≈60%）</td><td>1. 已经把相应的Anbox的各个模块的移植到Android中，其中GPS与Audio模块使用了谷歌给Goldfish的实现。<br/>2.OpenGL ES实现和HWC实现在Android 11下无法测试，由于Android 11的相关变动，导致输出画面调用了Gralloc的PostFB去输出，而在Anbox中是未做这部分RPC调用的，输出画面失败。<br/>3.把相关方案在Android 10上进行测试，测试可以输出画面，但卡在安卓Launcher第一屏画面。</td></tr>
<tr><td style="text-align: center">总计</td><td style="text-align: center">≈80%</td><td>1. 本项目自立项以来经历了三个月的时间进行研究与开发，实现方案的过程中遇到困难重重，主要遇到的阻力在系统庞大、相关实现的资料缺失方面。<br />2. 目前还有部分的工作需要测试和完成。由于Android 11在图形和音频方面变动较大，即使目前进行了相关模块的移植，但是还需要在图形模块、音频模块、输入模块方面进行各类测试和调试工作。<br />3. 项目将放在Github进行公开，把截至目前学习的成果公开，希望后续有更多的参与者参与进来进行开发完善。</td></tr>
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