Thinking in Qt —— 关于 Qt 程序架构

经营淘宝店 cuteqt.taobao.com 一年有余，看过很多同学的 Qt 代码，有一些想法，想记录一下。
第一篇想讲一下 Qt 程序的架构
一般的，在数据处理流程中，通常会经历以下几个步骤：
数据协议解析（如以太网、串口、Wi-Fi、蓝牙、USB、CAN等）
后处理（如数据清洗、过滤和转换、数据聚合、数据压缩、加密和解密、特征提取、信号处理、图像处理、视频处理、统计分析、模式识别、自然语言处理和时间序列分析等）
界面渲染。
界面渲染通常在主线程上进行，而数据解析和后处理则在各自独立的线程中运行。
接下来，讲一下 Qt 如何创建多线程
让我们回顾下 Qt 文档中的示例代码
第一种是继承 QThread
</div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"/><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">class</span> <span class="cm-def">WorkerThread</span> : <span class="cm-keyword">public</span> <span class="cm-variable">QThread</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">Q_OBJECT</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">run</span>() <span class="cm-keyword">override</span> {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QString</span> <span class="cm-variable">result</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-comment">/* ... here is the expensive or blocking operation ... */</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">emit</span> <span class="cm-variable">resultReady</span>(<span class="cm-variable">result</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">signals</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">resultReady</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">s</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">MyObject::startWorkInAThread</span>()</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">WorkerThread</span> <span class="cm-operator">*</span><span class="cm-variable">workerThread</span> <span class="cm-operator">=</span> <span class="cm-keyword">new</span> <span class="cm-variable">WorkerThread</span>(<span class="cm-keyword">this</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">connect</span>(<span class="cm-variable">workerThread</span>, <span class="cm-operator">&</span><span class="cm-variable">WorkerThread::resultReady</span>, <span class="cm-keyword">this</span>, <span class="cm-operator">&</span><span class="cm-variable">MyObject::handleResults</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">connect</span>(<span class="cm-variable">workerThread</span>, <span class="cm-operator">&</span><span class="cm-variable">WorkerThread::finished</span>, <span class="cm-variable">workerThread</span>, <span class="cm-operator">&</span><span class="cm-variable">QObject::deleteLater</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">workerThread</span><span class="cm-operator">-></span><span class="cm-variable">start</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 415px;"/><div class="CodeMirror-gutters" style="display: none; height: 415px;"/></div></div></pre><p><span>第二种是 moveToThread</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="cpp" style="break-inside: unset;"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="cpp"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.52344px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">class</span> <span class="cm-def">Worker</span> : <span class="cm-keyword">public</span> <span class="cm-variable">QObject</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">Q_OBJECT</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">public</span> <span class="cm-variable">slots</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">doWork</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">parameter</span>) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QString</span> <span class="cm-variable">result</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-comment">/* ... here is the expensive or blocking operation ... */</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">emit</span> <span class="cm-variable">resultReady</span>(<span class="cm-variable">result</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">signals</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">resultReady</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">result</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">class</span> <span class="cm-def">Controller</span> : <span class="cm-keyword">public</span> <span class="cm-variable">QObject</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">Q_OBJECT</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QThread</span> <span class="cm-variable">workerThread</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">public</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">Controller</span>() {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">Worker</span> <span class="cm-operator">*</span><span class="cm-variable">worker</span> <span class="cm-operator">=</span> <span class="cm-keyword">new</span> <span class="cm-variable">Worker</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">worker</span><span class="cm-operator">-></span><span class="cm-variable">moveToThread</span>(<span class="cm-operator">&</span><span class="cm-variable">workerThread</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">connect</span>(<span class="cm-operator">&</span><span class="cm-variable">workerThread</span>, <span class="cm-operator">&</span><span class="cm-variable">QThread::finished</span>, <span class="cm-variable">worker</span>, <span class="cm-operator">&</span><span class="cm-variable">QObject::deleteLater</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">connect</span>(<span class="cm-keyword">this</span>, <span class="cm-operator">&</span><span class="cm-variable">Controller::operate</span>, <span class="cm-variable">worker</span>, <span class="cm-operator">&</span><span class="cm-variable">Worker::doWork</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">connect</span>(<span class="cm-variable">worker</span>, <span class="cm-operator">&</span><span class="cm-variable">Worker::resultReady</span>, <span class="cm-keyword">this</span>, <span class="cm-operator">&</span><span class="cm-variable">Controller::handleResults</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">workerThread</span>.<span class="cm-variable">start</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">~Controller</span>() {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">workerThread</span>.<span class="cm-variable">quit</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">workerThread</span>.<span class="cm-variable">wait</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">public</span> <span class="cm-variable">slots</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">handleResults</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">signals</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">operate</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">};</span></pre></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 784px;"/><div class="CodeMirror-gutters" style="display: none; height: 784px;"/></div></div></pre><p><span>两种写法都有各自应用的场景</span></p><p><span>第一种写法的应用场景：你只想在子线程里做一件简单的事时。比如不停地接收串口的数据或者创建一个二进制文件。</span></p><p><span>第二种写法的应用场景：你想异步操作一个硬件，不阻塞 UI。比如调用摄像头 SDK 的各种 API。</span></p><p><span>一般来说，第二种场景更常见一些，而且第一种场景也可以用第二种写法改写。</span></p><p><span>这里为了演示，我选了一个我熟悉的场景，相机的使用。</span></p><p><span>相机作为 Server 接收 PC 上 Client 的 TCP 消息，可以被修改相机参数，也可以主动发送图像数据</span></p><p><span>为了简化，我们直接用 QTcpServer 写个软件，模拟相机硬件，然后再用 QTcpSocket 写个 PC 客户端软件，控制相机。</span></p><p><span>然后我们基于 Tcp 设计一个简单的自定义通信协议</span></p><p><img src="2.svg" referrerpolicy="no-referrer"/></p><p><span>这是消息头的定义：</span></p><p><span>第 1 字节为固定值 0x27</span></p><p><span>第 2 字节为消息类型，0x01 表示 </span><strong><span>设置参数</span></strong><span> 0x02 代表 </span><strong><span>获取参数</span></strong><span> 0x03 代表 </span><strong><span>获取图像</span></strong></p><p><span>第 3 4 两字节为消息 ID，从 0 开始单调递增</span></p><p><span>第 5 6 7 8 四字节为后面要接收的消息体（也称为负载，即 Payload）的长度</span></p><p> </p><blockquote><p><span>下面的代码已经上传到 github </span><a href="https://github.com/abc881858/Camera" target="_blank" class="url">https://github.com/abc881858/Camera</a></p></blockquote><p><strong><span>Server 端代码如下</span></strong></p><p><span>【camerasever.pro】</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="cpp"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="cpp"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.52344px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation"><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">QT</span> <span class="cm-operator">+=</span> <span class="cm-variable">core</span> <span class="cm-variable">gui</span> <span class="cm-variable">network</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">CONFIG</span> <span class="cm-operator">+=</span> <span class="cm-variable">c</span><span class="cm-operator">++</span><span class="cm-number">17</span> <span class="cm-variable">cmdline</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">SOURCES</span> <span class="cm-operator">+=</span> <span class="cm-variable">cameraserver</span>.<span class="cm-variable">cpp</span> <span class="cm-variable">main</span>.<span class="cm-variable">cpp</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">HEADERS</span> <span class="cm-operator">+=</span> <span class="cm-variable">cameraserver</span>.<span class="cm-variable">h</span> <span class="cm-variable">packet</span>.<span class="cm-variable">h</span></span></pre></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 92px;"/><div class="CodeMirror-gutters" style="display: none; height: 92px;"/></div></div></pre><p><span>【packet.h】</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="cpp" style="break-inside: unset;"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="cpp"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.52344px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><span><span></span>x</span></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#pragma once</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QObject></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">enum</span> <span class="cm-def">MessageType</span> {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">SET_PARAM</span> <span class="cm-operator">=</span> <span class="cm-number">0x01</span>,</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">GET_PARAM</span> <span class="cm-operator">=</span> <span class="cm-number">0x02</span>,</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">GET_IMAGE</span> <span class="cm-operator">=</span> <span class="cm-number">0x03</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">struct</span> <span class="cm-def">PacketHeader</span> {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">quint8</span> <span class="cm-variable">fixedByte</span>{<span class="cm-number">0</span>};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">quint8</span> <span class="cm-variable">messageType</span>{<span class="cm-number">0</span>};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">quint16</span> <span class="cm-variable">messageId</span>{<span class="cm-number">0</span>};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">quint32</span> <span class="cm-variable">payloadLength</span>{<span class="cm-number">0</span>};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">};</span></pre></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 369px;"/><div class="CodeMirror-gutters" style="display: none; height: 369px;"/></div></div></pre><p><span>【main.cpp】</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="cpp"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="cpp"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.52344px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QCoreApplication></span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include "cameraserver.h"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">int</span> <span class="cm-def">main</span>(<span class="cm-variable-3">int</span> <span class="cm-variable">argc</span>, <span class="cm-variable-3">char</span> <span class="cm-variable-3">*</span><span class="cm-variable">argv</span>[]) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QCoreApplication</span> <span class="cm-variable">a</span>(<span class="cm-variable">argc</span>, <span class="cm-variable">argv</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">CameraServer</span> <span class="cm-variable">server</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">server</span>.<span class="cm-variable">listen</span>(<span class="cm-variable">QHostAddress::AnyIPv4</span>, <span class="cm-number">27000</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-keyword">return</span> <span class="cm-variable">a</span>.<span class="cm-variable">exec</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 207px;"/><div class="CodeMirror-gutters" style="display: none; height: 207px;"/></div></div></pre><p><span>【cameraserver.h】</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="cpp" style="break-inside: unset;"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="cpp"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.52344px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#pragma once</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QBuffer></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QDataStream></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QDebug></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QImage></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QMap></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QTcpServer></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QTcpSocket></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include "packet.h"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">class</span> <span class="cm-def">CameraServer</span> : <span class="cm-keyword">public</span> <span class="cm-variable">QTcpServer</span> {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">Q_OBJECT</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">public</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">CameraServer</span>(<span class="cm-variable">QObject</span> <span class="cm-operator">*</span><span class="cm-variable">parent</span> <span class="cm-operator">=</span> <span class="cm-keyword">nullptr</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">sendParam</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">paramName</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">sendImage</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">protected</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">incomingConnection</span>(<span class="cm-variable">qintptr</span> <span class="cm-variable">socketDescriptor</span>) <span class="cm-keyword">override</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">private</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QTcpSocket</span> <span class="cm-operator">*</span><span class="cm-variable">m_socket</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QByteArray</span> <span class="cm-variable">m_buffer</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">quint16</span> <span class="cm-variable">m_message_id</span>{<span class="cm-number">0</span>};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">PacketHeader</span> <span class="cm-variable">m_header</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">bool</span> <span class="cm-variable">m_reading_header</span>{<span class="cm-atom">true</span>};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QMap</span><span class="cm-operator"><</span><span class="cm-variable">QString</span>, <span class="cm-variable">QString</span><span class="cm-operator">></span> <span class="cm-variable">parameters</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">private</span> <span class="cm-variable">slots</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">readClient</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">discardClient</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">setParam</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">paramName</span>, <span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">paramValue</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">};</span></pre></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 714px;"/><div class="CodeMirror-gutters" style="display: none; height: 714px;"/></div></div></pre><p><span>【cameraserver.cpp】</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="cpp" style="break-inside: unset;"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="cpp"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.52344px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include "cameraserver.h"</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-def">CameraServer::CameraServer</span>(<span class="cm-variable">QObject</span> <span class="cm-operator">*</span><span class="cm-variable">parent</span>) : <span class="cm-variable">QTcpServer</span>(<span class="cm-variable">parent</span>), <span class="cm-variable">m_socket</span>(<span class="cm-keyword">nullptr</span>) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">parameters</span>[<span class="cm-string">"brightness"</span>] <span class="cm-operator">=</span> <span class="cm-string">"50"</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">parameters</span>[<span class="cm-string">"contrast"</span>] <span class="cm-operator">=</span> <span class="cm-string">"50"</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">CameraServer::incomingConnection</span>(<span class="cm-variable">qintptr</span> <span class="cm-variable">socketDescriptor</span>) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-keyword">if</span> (<span class="cm-variable">m_socket</span>) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">disconnectFromHost</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_socket</span> <span class="cm-operator">=</span> <span class="cm-keyword">new</span> <span class="cm-variable">QTcpSocket</span>(<span class="cm-keyword">this</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">setSocketDescriptor</span>(<span class="cm-variable">socketDescriptor</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">connect</span>(<span class="cm-variable">m_socket</span>, <span class="cm-operator">&</span><span class="cm-variable">QTcpSocket::readyRead</span>, <span class="cm-keyword">this</span>, <span class="cm-operator">&</span><span class="cm-variable">CameraServer::readClient</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">connect</span>(<span class="cm-variable">m_socket</span>, <span class="cm-operator">&</span><span class="cm-variable">QTcpSocket::disconnected</span>, <span class="cm-keyword">this</span>, <span class="cm-operator">&</span><span class="cm-variable">CameraServer::discardClient</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">CameraServer::readClient</span>() {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_buffer</span>.<span class="cm-variable">append</span>(<span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">readAll</span>());</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-keyword">if</span> (<span class="cm-variable">m_reading_header</span> <span class="cm-operator">&&</span> <span class="cm-variable">m_buffer</span>.<span class="cm-variable">size</span>() <span class="cm-operator">>=</span> <span class="cm-number">8</span>) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QDataStream</span> <span class="cm-variable">headerStream</span>(<span class="cm-variable">m_buffer</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">headerStream</span>.<span class="cm-variable">setByteOrder</span>(<span class="cm-variable">QDataStream::BigEndian</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">headerStream</span> <span class="cm-operator">>></span> <span class="cm-variable">m_header</span>.<span class="cm-variable">fixedByte</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-keyword">if</span> (<span class="cm-variable">m_header</span>.<span class="cm-variable">fixedByte</span> <span class="cm-operator">!=</span> <span class="cm-number">0x27</span>) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-string">"Invalid fixed byte:"</span> <span class="cm-operator"><<</span> <span class="cm-variable">m_header</span>.<span class="cm-variable">fixedByte</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-keyword">return</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">headerStream</span> <span class="cm-operator">>></span> <span class="cm-variable">m_header</span>.<span class="cm-variable">messageType</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">headerStream</span> <span class="cm-operator">>></span> <span class="cm-variable">m_header</span>.<span class="cm-variable">messageId</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">headerStream</span> <span class="cm-operator">>></span> <span class="cm-variable">m_header</span>.<span class="cm-variable">payloadLength</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_reading_header</span> <span class="cm-operator">=</span> <span class="cm-atom">false</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_buffer</span>.<span class="cm-variable">remove</span>(<span class="cm-number">0</span>, <span class="cm-number">8</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-keyword">if</span> (<span class="cm-operator">!</span><span class="cm-variable">m_reading_header</span> <span class="cm-operator">&&</span> <span class="cm-variable">m_buffer</span>.<span class="cm-variable">size</span>() <span class="cm-operator">>=</span> <span class="cm-variable-3">int</span>(<span class="cm-variable">m_header</span>.<span class="cm-variable">payloadLength</span>)) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QByteArray</span> <span class="cm-variable">payload</span> <span class="cm-operator">=</span> <span class="cm-variable">m_buffer</span>.<span class="cm-variable">left</span>(<span class="cm-variable">m_header</span>.<span class="cm-variable">payloadLength</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_buffer</span>.<span class="cm-variable">remove</span>(<span class="cm-number">0</span>, <span class="cm-variable">m_header</span>.<span class="cm-variable">payloadLength</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QDataStream</span> <span class="cm-variable">payloadStream</span>(<span class="cm-variable">payload</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">payloadStream</span>.<span class="cm-variable">setByteOrder</span>(<span class="cm-variable">QDataStream::BigEndian</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-keyword">switch</span> (<span class="cm-variable">m_header</span>.<span class="cm-variable">messageType</span>) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-keyword">case</span> <span class="cm-variable">SET_PARAM</span>: {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">QString</span> <span class="cm-variable">paramName</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">QString</span> <span class="cm-variable">paramValue</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">payloadStream</span> <span class="cm-operator">>></span> <span class="cm-variable">paramName</span> <span class="cm-operator">>></span> <span class="cm-variable">paramValue</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">setParam</span>(<span class="cm-variable">paramName</span>, <span class="cm-variable">paramValue</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-keyword">break</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-keyword">case</span> <span class="cm-variable">GET_PARAM</span>: {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">QString</span> <span class="cm-variable">paramName</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">payloadStream</span> <span class="cm-operator">>></span> <span class="cm-variable">paramName</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">sendParam</span>(<span class="cm-variable">paramName</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-keyword">break</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-keyword">case</span> <span class="cm-variable">GET_IMAGE</span>: {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">sendImage</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-keyword">break</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-keyword">default</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-string">"Unknown message type:"</span> <span class="cm-operator"><<</span> <span class="cm-variable">m_header</span>.<span class="cm-variable">messageType</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_header</span>.<span class="cm-variable">fixedByte</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_header</span>.<span class="cm-variable">messageType</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_header</span>.<span class="cm-variable">messageId</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_header</span>.<span class="cm-variable">payloadLength</span> <span class="cm-operator">=</span> <span class="cm-number">0</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_reading_header</span> <span class="cm-operator">=</span> <span class="cm-atom">true</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">CameraServer::discardClient</span>() {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">deleteLater</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_socket</span> <span class="cm-operator">=</span> <span class="cm-keyword">nullptr</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">CameraServer::setParam</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">paramName</span>, <span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">paramValue</span>) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">parameters</span>[<span class="cm-variable">paramName</span>] <span class="cm-operator">=</span> <span class="cm-variable">paramValue</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">CameraServer::sendParam</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">paramName</span>) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-keyword">if</span> (<span class="cm-operator">!</span><span class="cm-variable">m_socket</span>) <span class="cm-keyword">return</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QString</span> <span class="cm-variable">paramValue</span> <span class="cm-operator">=</span> <span class="cm-variable">parameters</span>.<span class="cm-variable">value</span>(<span class="cm-variable">paramName</span>, <span class="cm-string">"unknown"</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QByteArray</span> <span class="cm-variable">payload</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QDataStream</span> <span class="cm-variable">tmp</span>(<span class="cm-operator">&</span><span class="cm-variable">payload</span>, <span class="cm-variable">QIODevice::WriteOnly</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">tmp</span>.<span class="cm-variable">setByteOrder</span>(<span class="cm-variable">QDataStream::BigEndian</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">tmp</span> <span class="cm-operator"><<</span> <span class="cm-variable">paramName</span> <span class="cm-operator"><<</span> <span class="cm-variable">paramValue</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QByteArray</span> <span class="cm-variable">response</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QDataStream</span> <span class="cm-variable">stream</span>(<span class="cm-operator">&</span><span class="cm-variable">response</span>, <span class="cm-variable">QIODevice::WriteOnly</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">stream</span>.<span class="cm-variable">setByteOrder</span>(<span class="cm-variable">QDataStream::BigEndian</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">stream</span> <span class="cm-operator"><<</span> <span class="cm-variable">quint8</span>(<span class="cm-number">0x27</span>) <span class="cm-operator"><<</span> <span class="cm-variable">quint8</span>(<span class="cm-number">0x02</span>) <span class="cm-operator"><<</span> <span class="cm-variable">quint16</span>(<span class="cm-operator">++</span><span class="cm-variable">m_message_id</span>) <span class="cm-operator"><<</span> <span class="cm-variable">quint32</span>(<span class="cm-variable">payload</span>.<span class="cm-variable">size</span>());</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">write</span>(<span class="cm-variable">response</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">write</span>(<span class="cm-variable">payload</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">CameraServer::sendImage</span>() {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-keyword">if</span> (<span class="cm-operator">!</span><span class="cm-variable">m_socket</span>) <span class="cm-keyword">return</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QImage</span> <span class="cm-variable">image</span>(<span class="cm-number">640</span>, <span class="cm-number">480</span>, <span class="cm-variable">QImage::Format_RGB32</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">image</span>.<span class="cm-variable">fill</span>(<span class="cm-variable">Qt::blue</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QByteArray</span> <span class="cm-variable">payload</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QBuffer</span> <span class="cm-variable">buffer</span>(<span class="cm-operator">&</span><span class="cm-variable">payload</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">image</span>.<span class="cm-variable">save</span>(<span class="cm-operator">&</span><span class="cm-variable">buffer</span>, <span class="cm-string">"PNG"</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QByteArray</span> <span class="cm-variable">response</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QDataStream</span> <span class="cm-variable">stream</span>(<span class="cm-operator">&</span><span class="cm-variable">response</span>, <span class="cm-variable">QIODevice::WriteOnly</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">stream</span>.<span class="cm-variable">setByteOrder</span>(<span class="cm-variable">QDataStream::BigEndian</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">stream</span> <span class="cm-operator"><<</span> <span class="cm-variable">quint8</span>(<span class="cm-number">0x27</span>) <span class="cm-operator"><<</span> <span class="cm-variable">quint8</span>(<span class="cm-number">0x03</span>) <span class="cm-operator"><<</span> <span class="cm-variable">quint16</span>(<span class="cm-operator">++</span><span class="cm-variable">m_message_id</span>) <span class="cm-operator"><<</span> <span class="cm-variable">quint32</span>(<span class="cm-variable">payload</span>.<span class="cm-variable">size</span>());</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">write</span>(<span class="cm-variable">response</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">write</span>(<span class="cm-variable">payload</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 2489px;"/><div class="CodeMirror-gutters" style="display: none; height: 2489px;"/></div></div></pre><p><strong><span>Client 端代码如下</span></strong></p><p><span>【cameraclient.pro】</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="cpp" style="break-inside: unset;"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="cpp"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.52344px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">QT</span> <span class="cm-operator">+=</span> <span class="cm-variable">core</span> <span class="cm-variable">gui</span> <span class="cm-variable">widgets</span> <span class="cm-variable">network</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">CONFIG</span> <span class="cm-operator">+=</span> <span class="cm-variable">c</span><span class="cm-operator">++</span><span class="cm-number">17</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">SOURCES</span> <span class="cm-operator">+=</span> <span class="cm-variable">\</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">cameraclient</span>.<span class="cm-variable">cpp</span> <span class="cm-variable">\</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">main</span>.<span class="cm-variable">cpp</span> <span class="cm-variable">\</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">mainwindow</span>.<span class="cm-variable">cpp</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">HEADERS</span> <span class="cm-operator">+=</span> <span class="cm-variable">\</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">cameraclient</span>.<span class="cm-variable">h</span> <span class="cm-variable">\</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">mainwindow</span>.<span class="cm-variable">h</span> <span class="cm-variable">\</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">packet</span>.<span class="cm-variable">h</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">FORMS</span> <span class="cm-operator">+=</span> <span class="cm-variable">\</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">mainwindow</span>.<span class="cm-variable">ui</span></span></pre></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 369px;"/><div class="CodeMirror-gutters" style="display: none; height: 369px;"/></div></div></pre><p><span>【packet.h】</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="cpp" style="break-inside: unset;"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="cpp"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.52344px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#pragma once</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QObject></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">enum</span> <span class="cm-def">MessageType</span> {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">SET_PARAM</span> <span class="cm-operator">=</span> <span class="cm-number">0x01</span>,</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">GET_PARAM</span> <span class="cm-operator">=</span> <span class="cm-number">0x02</span>,</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">GET_IMAGE</span> <span class="cm-operator">=</span> <span class="cm-number">0x03</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">struct</span> <span class="cm-def">PacketHeader</span> {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">quint8</span> <span class="cm-variable">fixedByte</span>{<span class="cm-number">0</span>};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">quint8</span> <span class="cm-variable">messageType</span>{<span class="cm-number">0</span>};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">quint16</span> <span class="cm-variable">messageId</span>{<span class="cm-number">0</span>};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">quint32</span> <span class="cm-variable">payloadLength</span>{<span class="cm-number">0</span>};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">};</span></pre></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 369px;"/><div class="CodeMirror-gutters" style="display: none; height: 369px;"/></div></div></pre><p><span>【main.cpp】</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="cpp"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="cpp"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.52344px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include "mainwindow.h"</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QApplication></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">int</span> <span class="cm-def">main</span>(<span class="cm-variable-3">int</span> <span class="cm-variable">argc</span>, <span class="cm-variable-3">char</span> <span class="cm-variable-3">*</span><span class="cm-variable">argv</span>[]) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QApplication</span> <span class="cm-variable">a</span>(<span class="cm-variable">argc</span>, <span class="cm-variable">argv</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">MainWindow</span> <span class="cm-variable">w</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">w</span>.<span class="cm-variable">show</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-keyword">return</span> <span class="cm-variable">a</span>.<span class="cm-variable">exec</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 207px;"/><div class="CodeMirror-gutters" style="display: none; height: 207px;"/></div></div></pre><p><span>【mainwindow.h】</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="cpp" style="break-inside: unset;"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="cpp"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.52344px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#pragma once</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QMainWindow></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include "cameraclient.h"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QThread></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">QT_BEGIN_NAMESPACE</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">namespace</span> <span class="cm-def">Ui</span> { <span class="cm-keyword">class</span> <span class="cm-def">MainWindow</span>; }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">QT_END_NAMESPACE</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">class</span> <span class="cm-def">MainWindow</span> : <span class="cm-keyword">public</span> <span class="cm-variable">QMainWindow</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">Q_OBJECT</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">public</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">MainWindow</span>(<span class="cm-variable">QWidget</span> <span class="cm-operator">*</span><span class="cm-variable">parent</span> <span class="cm-operator">=</span> <span class="cm-keyword">nullptr</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">~MainWindow</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">private</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">Ui::MainWindow</span> <span class="cm-operator">*</span><span class="cm-variable">ui</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">CameraClient</span> <span class="cm-operator">*</span><span class="cm-variable">m_camera_client</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QThread</span> <span class="cm-variable">m_camera_thread</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">public</span> <span class="cm-variable">slots</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">send_image</span>(<span class="cm-variable">QImage</span> <span class="cm-variable">image</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">brightness_slot</span>(<span class="cm-variable">QString</span> <span class="cm-variable">str</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">private</span> <span class="cm-variable">slots</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">on_pushButton_clicked</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">on_pushButton_2_clicked</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">on_pushButton_3_clicked</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">on_pushButton_4_clicked</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">signals</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">connectToServer</span>(<span class="cm-variable">QString</span>, <span class="cm-variable">quint16</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">requestImage</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">setParam</span>(<span class="cm-variable">QString</span>, <span class="cm-variable">QString</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">getParam</span>(<span class="cm-variable">QString</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 807px;"/><div class="CodeMirror-gutters" style="display: none; height: 807px;"/></div></div></pre><p><span>【mainwindow.cpp】</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="cpp" style="break-inside: unset;"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="cpp"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.52344px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include "mainwindow.h"</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include "ui_mainwindow.h"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-def">MainWindow::MainWindow</span>(<span class="cm-variable">QWidget</span> <span class="cm-operator">*</span><span class="cm-variable">parent</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    : <span class="cm-variable">QMainWindow</span>(<span class="cm-variable">parent</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    , <span class="cm-variable">ui</span>(<span class="cm-keyword">new</span> <span class="cm-variable">Ui::MainWindow</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">ui</span><span class="cm-operator">-></span><span class="cm-variable">setupUi</span>(<span class="cm-keyword">this</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_camera_client</span> <span class="cm-operator">=</span> <span class="cm-keyword">new</span> <span class="cm-variable">CameraClient</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_camera_client</span><span class="cm-operator">-></span><span class="cm-variable">moveToThread</span>(<span class="cm-operator">&</span><span class="cm-variable">m_camera_thread</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">connect</span>(<span class="cm-operator">&</span><span class="cm-variable">m_camera_thread</span>, <span class="cm-operator">&</span><span class="cm-variable">QThread::finished</span>, <span class="cm-variable">m_camera_client</span>, <span class="cm-operator">&</span><span class="cm-variable">CameraClient::deleteLater</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">connect</span>(<span class="cm-keyword">this</span>, <span class="cm-operator">&</span><span class="cm-variable">MainWindow::connectToServer</span>, <span class="cm-variable">m_camera_client</span>, <span class="cm-operator">&</span><span class="cm-variable">CameraClient::connectToServer</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">connect</span>(<span class="cm-keyword">this</span>, <span class="cm-operator">&</span><span class="cm-variable">MainWindow::requestImage</span>, <span class="cm-variable">m_camera_client</span>, <span class="cm-operator">&</span><span class="cm-variable">CameraClient::requestImage</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">connect</span>(<span class="cm-keyword">this</span>, <span class="cm-operator">&</span><span class="cm-variable">MainWindow::setParam</span>, <span class="cm-variable">m_camera_client</span>, <span class="cm-operator">&</span><span class="cm-variable">CameraClient::setParam</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">connect</span>(<span class="cm-keyword">this</span>, <span class="cm-operator">&</span><span class="cm-variable">MainWindow::getParam</span>, <span class="cm-variable">m_camera_client</span>, <span class="cm-operator">&</span><span class="cm-variable">CameraClient::getParam</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">connect</span>(<span class="cm-variable">m_camera_client</span>, <span class="cm-operator">&</span><span class="cm-variable">CameraClient::send_image</span>, <span class="cm-keyword">this</span>, <span class="cm-operator">&</span><span class="cm-variable">MainWindow::send_image</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">connect</span>(<span class="cm-variable">m_camera_client</span>, <span class="cm-operator">&</span><span class="cm-variable">CameraClient::brightness_signal</span>, <span class="cm-keyword">this</span>, <span class="cm-operator">&</span><span class="cm-variable">MainWindow::brightness_slot</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_camera_thread</span>.<span class="cm-variable">start</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-def">MainWindow::~MainWindow</span>()</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_camera_thread</span>.<span class="cm-variable">quit</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_camera_thread</span>.<span class="cm-variable">wait</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-keyword">delete</span> <span class="cm-variable">ui</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">MainWindow::on_pushButton_clicked</span>()</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">emit</span> <span class="cm-variable">connectToServer</span>(<span class="cm-string">"127.0.0.1"</span>, <span class="cm-number">27000</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">MainWindow::on_pushButton_2_clicked</span>()</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">emit</span> <span class="cm-variable">requestImage</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">MainWindow::on_pushButton_3_clicked</span>()</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">emit</span> <span class="cm-variable">setParam</span>(<span class="cm-string">"brightness"</span>, <span class="cm-variable">QString::number</span>(<span class="cm-variable">ui</span><span class="cm-operator">-></span><span class="cm-variable">spinBox</span><span class="cm-operator">-></span><span class="cm-variable">value</span>()));</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">MainWindow::on_pushButton_4_clicked</span>()</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">emit</span> <span class="cm-variable">getParam</span>(<span class="cm-string">"brightness"</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">MainWindow::send_image</span>(<span class="cm-variable">QImage</span> <span class="cm-variable">image</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">ui</span><span class="cm-operator">-></span><span class="cm-variable">label</span><span class="cm-operator">-></span><span class="cm-variable">setPixmap</span>(<span class="cm-variable">QPixmap::fromImage</span>(<span class="cm-variable">image</span>));</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">MainWindow::brightness_slot</span>(<span class="cm-variable">QString</span> <span class="cm-variable">str</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">ui</span><span class="cm-operator">-></span><span class="cm-variable">spinBox</span><span class="cm-operator">-></span><span class="cm-variable">setValue</span>(<span class="cm-variable">str</span>.<span class="cm-variable">toInt</span>());</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 1383px;"/><div class="CodeMirror-gutters" style="display: none; height: 1383px;"/></div></div></pre><p><span>【mainwindow.ui】</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="xml"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="xml"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.26172px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation"><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta"><?xml</span> <span class="cm-meta">version="1.0" encoding="UTF-8"?></span><span class="cm-tag cm-bracket"><</span><span class="cm-tag">ui</span> <span class="cm-attribute">version</span>=<span class="cm-string">"4.0"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">class</span><span class="cm-tag cm-bracket">></span>MainWindow<span class="cm-tag cm-bracket"></</span><span class="cm-tag">class</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">widget</span> <span class="cm-attribute">class</span>=<span class="cm-string">"QMainWindow"</span> <span class="cm-attribute">name</span>=<span class="cm-string">"MainWindow"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">property</span> <span class="cm-attribute">name</span>=<span class="cm-string">"geometry"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">rect</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">x</span><span class="cm-tag cm-bracket">></span>0<span class="cm-tag cm-bracket"></</span><span class="cm-tag">x</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">y</span><span class="cm-tag cm-bracket">></span>0<span class="cm-tag cm-bracket"></</span><span class="cm-tag">y</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">width</span><span class="cm-tag cm-bracket">></span>800<span class="cm-tag cm-bracket"></</span><span class="cm-tag">width</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">height</span><span class="cm-tag cm-bracket">></span>600<span class="cm-tag cm-bracket"></</span><span class="cm-tag">height</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">rect</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">property</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">property</span> <span class="cm-attribute">name</span>=<span class="cm-string">"windowTitle"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">></span>MainWindow<span class="cm-tag cm-bracket"></</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">property</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">widget</span> <span class="cm-attribute">class</span>=<span class="cm-string">"QWidget"</span> <span class="cm-attribute">name</span>=<span class="cm-string">"centralwidget"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">layout</span> <span class="cm-attribute">class</span>=<span class="cm-string">"QVBoxLayout"</span> <span class="cm-attribute">name</span>=<span class="cm-string">"verticalLayout"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">widget</span> <span class="cm-attribute">class</span>=<span class="cm-string">"QWidget"</span> <span class="cm-attribute">name</span>=<span class="cm-string">"widget"</span> <span class="cm-attribute">native</span>=<span class="cm-string">"true"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">property</span> <span class="cm-attribute">name</span>=<span class="cm-string">"sizePolicy"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">sizepolicy</span> <span class="cm-attribute">hsizetype</span>=<span class="cm-string">"Preferred"</span> <span class="cm-attribute">vsizetype</span>=<span class="cm-string">"Fixed"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">horstretch</span><span class="cm-tag cm-bracket">></span>0<span class="cm-tag cm-bracket"></</span><span class="cm-tag">horstretch</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">verstretch</span><span class="cm-tag cm-bracket">></span>0<span class="cm-tag cm-bracket"></</span><span class="cm-tag">verstretch</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">sizepolicy</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">property</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">layout</span> <span class="cm-attribute">class</span>=<span class="cm-string">"QHBoxLayout"</span> <span class="cm-attribute">name</span>=<span class="cm-string">"horizontalLayout"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">widget</span> <span class="cm-attribute">class</span>=<span class="cm-string">"QPushButton"</span> <span class="cm-attribute">name</span>=<span class="cm-string">"pushButton"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">property</span> <span class="cm-attribute">name</span>=<span class="cm-string">"text"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">></span>connect<span class="cm-tag cm-bracket"></</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">property</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">widget</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">widget</span> <span class="cm-attribute">class</span>=<span class="cm-string">"QPushButton"</span> <span class="cm-attribute">name</span>=<span class="cm-string">"pushButton_2"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">property</span> <span class="cm-attribute">name</span>=<span class="cm-string">"text"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">></span>request image<span class="cm-tag cm-bracket"></</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">property</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">widget</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">widget</span> <span class="cm-attribute">class</span>=<span class="cm-string">"QPushButton"</span> <span class="cm-attribute">name</span>=<span class="cm-string">"pushButton_3"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">property</span> <span class="cm-attribute">name</span>=<span class="cm-string">"text"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">></span>setParam<span class="cm-tag cm-bracket"></</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">property</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">widget</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">widget</span> <span class="cm-attribute">class</span>=<span class="cm-string">"QPushButton"</span> <span class="cm-attribute">name</span>=<span class="cm-string">"pushButton_4"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">property</span> <span class="cm-attribute">name</span>=<span class="cm-string">"text"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">></span>getParam<span class="cm-tag cm-bracket"></</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">property</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">widget</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">widget</span> <span class="cm-attribute">class</span>=<span class="cm-string">"QSpinBox"</span> <span class="cm-attribute">name</span>=<span class="cm-string">"spinBox"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">property</span> <span class="cm-attribute">name</span>=<span class="cm-string">"suffix"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">/></</span><span class="cm-tag">property</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">property</span> <span class="cm-attribute">name</span>=<span class="cm-string">"prefix"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">></span>brightness: <span class="cm-tag cm-bracket"></</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">property</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">widget</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">spacer</span> <span class="cm-attribute">name</span>=<span class="cm-string">"horizontalSpacer"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">property</span> <span class="cm-attribute">name</span>=<span class="cm-string">"orientation"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">enum</span><span class="cm-tag cm-bracket">></span>Qt::Horizontal<span class="cm-tag cm-bracket"></</span><span class="cm-tag">enum</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">property</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">property</span> <span class="cm-attribute">name</span>=<span class="cm-string">"sizeHint"</span> <span class="cm-attribute">stdset</span>=<span class="cm-string">"0"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">size</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">width</span><span class="cm-tag cm-bracket">></span>40<span class="cm-tag cm-bracket"></</span><span class="cm-tag">width</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">height</span><span class="cm-tag cm-bracket">></span>20<span class="cm-tag cm-bracket"></</span><span class="cm-tag">height</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">size</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">property</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">spacer</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">layout</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">widget</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">widget</span> <span class="cm-attribute">class</span>=<span class="cm-string">"QLabel"</span> <span class="cm-attribute">name</span>=<span class="cm-string">"label"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">property</span> <span class="cm-attribute">name</span>=<span class="cm-string">"text"</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">string</span><span class="cm-tag cm-bracket">/></</span><span class="cm-tag">property</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">widget</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">item</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">layout</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">widget</span><span class="cm-tag cm-bracket">></</span><span class="cm-tag">widget</span><span class="cm-tag cm-bracket">><</span><span class="cm-tag">resources</span><span class="cm-tag cm-bracket">/><</span><span class="cm-tag">connections</span><span class="cm-tag cm-bracket">/></</span><span class="cm-tag">ui</span><span class="cm-tag cm-bracket">></span></span></pre></div></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 484px;"/><div class="CodeMirror-gutters" style="display: none; height: 484px;"/></div></div></pre><p><span>【cameraclient.h】</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="cpp" style="break-inside: unset;"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="cpp"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.52344px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#pragma once</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QBuffer></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QDataStream></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QDebug></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QHostAddress></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QImage></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include <QTcpSocket></span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include "packet.h"</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">class</span> <span class="cm-def">CameraClient</span> : <span class="cm-keyword">public</span> <span class="cm-variable">QObject</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">Q_OBJECT</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">public</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">CameraClient</span>(<span class="cm-variable">QObject</span> <span class="cm-operator">*</span><span class="cm-variable">parent</span> <span class="cm-operator">=</span> <span class="cm-keyword">nullptr</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">private</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QTcpSocket</span> <span class="cm-operator">*</span><span class="cm-variable">m_socket</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">QByteArray</span> <span class="cm-variable">m_buffer</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">quint16</span> <span class="cm-variable">m_message_id</span>{<span class="cm-number">0</span>};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">PacketHeader</span> <span class="cm-variable">m_header</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">bool</span> <span class="cm-variable">m_reading_header</span>{<span class="cm-atom">true</span>};</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">public</span> <span class="cm-variable">slots</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">connectToServer</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">host</span>, <span class="cm-variable">quint16</span> <span class="cm-variable">port</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">requestImage</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">setParam</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">paramName</span>, <span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">paramValue</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">getParam</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">paramName</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-keyword">private</span> <span class="cm-variable">slots</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">connected</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">readServer</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable">signals</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">image_signal</span>(<span class="cm-variable">QImage</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable-3">void</span> <span class="cm-variable">brightness_signal</span>(<span class="cm-variable">QString</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">};</span></pre></div></div></div></div></div><div style="position: absolute; ; width: 1px; border-bottom: 0px solid transparent; top: 761px;"/><div class="CodeMirror-gutters" style="display: none; height: 761px;"/></div></div></pre><p><span>【cameraclient.cpp】</span></p><pre class="md-fences md-end-block ty-contain-cm modeLoaded" spellcheck="false" lang="cpp" style="break-inside: unset;"><div class="CodeMirror cm-s-inner cm-s-null-scroll CodeMirror-wrap" lang="cpp"><div style="overflow: hidden; position: relative; width: 3px; ; top: 9.52344px; left: 8px;"><textarea autocorrect="off" autocapitalize="off" spellcheck="false" tabindex="0" style="position: absolute; bottom: -1em; padding: 0px; width: 1000px; height: 1em; outline: none;"/></div><div class="CodeMirror-scrollbar-filler" cm-not-content="true"/><div class="CodeMirror-gutter-filler" cm-not-content="true"/><div class="CodeMirror-scroll" tabindex="-1"><div class="CodeMirror-sizer" style="margin-left: 0px; margin-bottom: 0px; border-right-width: 0px; padding-right: 0px; padding-bottom: 0px;"><div style="position: relative; top: 0px;"><div class="CodeMirror-lines" role="presentation"><div role="presentation" style="position: relative; outline: none;"><div class="CodeMirror-measure"><pre><span>xxxxxxxxxx</span></pre></div><div class="CodeMirror-measure"/><div style="position: relative; z-index: 1;"/><div class="CodeMirror-code" role="presentation" style=""><div class="CodeMirror-activeline" style="position: relative;"><div class="CodeMirror-activeline-background CodeMirror-linebackground"/><div class="CodeMirror-gutter-background CodeMirror-activeline-gutter" style="left: 0px; width: 0px;"/><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-meta">#include "cameraclient.h"</span></span></pre></div><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-def">CameraClient::CameraClient</span>(<span class="cm-variable">QObject</span> <span class="cm-operator">*</span><span class="cm-variable">parent</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    : <span class="cm-variable">QObject</span>(<span class="cm-variable">parent</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_socket</span> <span class="cm-operator">=</span> <span class="cm-keyword">new</span> <span class="cm-variable">QTcpSocket</span>(<span class="cm-keyword">this</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">connect</span>(<span class="cm-variable">m_socket</span>, <span class="cm-operator">&</span><span class="cm-variable">QTcpSocket::connected</span>, <span class="cm-keyword">this</span>, <span class="cm-operator">&</span><span class="cm-variable">CameraClient::connected</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">connect</span>(<span class="cm-variable">m_socket</span>, <span class="cm-operator">&</span><span class="cm-variable">QTcpSocket::readyRead</span>, <span class="cm-keyword">this</span>, <span class="cm-operator">&</span><span class="cm-variable">CameraClient::readServer</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">CameraClient::connectToServer</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">host</span>, <span class="cm-variable">quint16</span> <span class="cm-variable">port</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">connectToHost</span>(<span class="cm-variable">QHostAddress</span>(<span class="cm-variable">host</span>), <span class="cm-variable">port</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">CameraClient::requestImage</span>()</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-keyword">if</span> (<span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">state</span>() <span class="cm-operator">==</span> <span class="cm-variable">QAbstractSocket::ConnectedState</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QByteArray</span> <span class="cm-variable">request</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QDataStream</span> <span class="cm-variable">stream</span>(<span class="cm-operator">&</span><span class="cm-variable">request</span>, <span class="cm-variable">QIODevice::WriteOnly</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">stream</span>.<span class="cm-variable">setByteOrder</span>(<span class="cm-variable">QDataStream::BigEndian</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">stream</span> <span class="cm-operator"><<</span> <span class="cm-variable">quint8</span>(<span class="cm-number">0x27</span>) <span class="cm-operator"><<</span> <span class="cm-variable">quint8</span>(<span class="cm-number">0x03</span>) <span class="cm-operator"><<</span> <span class="cm-variable">quint16</span>(<span class="cm-operator">++</span><span class="cm-variable">m_message_id</span>) <span class="cm-operator"><<</span> <span class="cm-variable">quint32</span>(<span class="cm-number">0</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-string">"request"</span> <span class="cm-operator"><<</span> <span class="cm-variable">request</span>.<span class="cm-variable">toHex</span>(<span class="cm-string">' '</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-string">"request size"</span> <span class="cm-operator"><<</span> <span class="cm-variable">request</span>.<span class="cm-variable">size</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">write</span>(<span class="cm-variable">request</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">CameraClient::setParam</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">paramName</span>, <span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">paramValue</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-keyword">if</span> (<span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">state</span>() <span class="cm-operator">==</span> <span class="cm-variable">QAbstractSocket::ConnectedState</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QByteArray</span> <span class="cm-variable">payload</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QDataStream</span> <span class="cm-variable">stream</span>(<span class="cm-operator">&</span><span class="cm-variable">payload</span>, <span class="cm-variable">QIODevice::WriteOnly</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">stream</span>.<span class="cm-variable">setByteOrder</span>(<span class="cm-variable">QDataStream::BigEndian</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">stream</span> <span class="cm-operator"><<</span> <span class="cm-variable">paramName</span> <span class="cm-operator"><<</span> <span class="cm-variable">paramValue</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QByteArray</span> <span class="cm-variable">request</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QDataStream</span> <span class="cm-variable">requestStream</span>(<span class="cm-operator">&</span><span class="cm-variable">request</span>, <span class="cm-variable">QIODevice::WriteOnly</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">requestStream</span>.<span class="cm-variable">setByteOrder</span>(<span class="cm-variable">QDataStream::BigEndian</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">requestStream</span> <span class="cm-operator"><<</span> <span class="cm-variable">quint8</span>(<span class="cm-number">0x27</span>) <span class="cm-operator"><<</span> <span class="cm-variable">quint8</span>(<span class="cm-number">0x01</span>) <span class="cm-operator"><<</span> <span class="cm-variable">quint16</span>(<span class="cm-operator">++</span><span class="cm-variable">m_message_id</span>) <span class="cm-operator"><<</span> <span class="cm-variable">payload</span>.<span class="cm-variable">size</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-string">"payload"</span> <span class="cm-operator"><<</span> <span class="cm-variable">payload</span>.<span class="cm-variable">toHex</span>(<span class="cm-string">' '</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-string">"payload size"</span> <span class="cm-operator"><<</span> <span class="cm-variable">payload</span>.<span class="cm-variable">size</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">write</span>(<span class="cm-variable">request</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">write</span>(<span class="cm-variable">payload</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">CameraClient::getParam</span>(<span class="cm-keyword">const</span> <span class="cm-variable">QString</span> <span class="cm-operator">&</span><span class="cm-variable">paramName</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-keyword">if</span> (<span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">state</span>() <span class="cm-operator">==</span> <span class="cm-variable">QAbstractSocket::ConnectedState</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QByteArray</span> <span class="cm-variable">payload</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QDataStream</span> <span class="cm-variable">stream</span>(<span class="cm-operator">&</span><span class="cm-variable">payload</span>, <span class="cm-variable">QIODevice::WriteOnly</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">stream</span>.<span class="cm-variable">setByteOrder</span>(<span class="cm-variable">QDataStream::BigEndian</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">stream</span> <span class="cm-operator"><<</span> <span class="cm-variable">paramName</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QByteArray</span> <span class="cm-variable">request</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QDataStream</span> <span class="cm-variable">requestStream</span>(<span class="cm-operator">&</span><span class="cm-variable">request</span>, <span class="cm-variable">QIODevice::WriteOnly</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">requestStream</span>.<span class="cm-variable">setByteOrder</span>(<span class="cm-variable">QDataStream::BigEndian</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">requestStream</span> <span class="cm-operator"><<</span> <span class="cm-variable">quint8</span>(<span class="cm-number">0x27</span>) <span class="cm-operator"><<</span> <span class="cm-variable">quint8</span>(<span class="cm-number">0x02</span>) <span class="cm-operator"><<</span> <span class="cm-variable">quint16</span>(<span class="cm-operator">++</span><span class="cm-variable">m_message_id</span>) <span class="cm-operator"><<</span> <span class="cm-variable">payload</span>.<span class="cm-variable">size</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-string">"payload"</span> <span class="cm-operator"><<</span> <span class="cm-variable">payload</span>.<span class="cm-variable">toHex</span>(<span class="cm-string">' '</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-string">"payload size"</span> <span class="cm-operator"><<</span> <span class="cm-variable">payload</span>.<span class="cm-variable">size</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">write</span>(<span class="cm-variable">request</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">write</span>(<span class="cm-variable">payload</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">CameraClient::connected</span>()</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-variable">__func__</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">}</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span class="cm-variable-3">void</span> <span class="cm-def">CameraClient::readServer</span>()</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">{</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-variable">m_buffer</span>.<span class="cm-variable">append</span>(<span class="cm-variable">m_socket</span><span class="cm-operator">-></span><span class="cm-variable">readAll</span>());</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-keyword">if</span> (<span class="cm-variable">m_reading_header</span> <span class="cm-operator">&&</span> <span class="cm-variable">m_buffer</span>.<span class="cm-variable">size</span>() <span class="cm-operator">>=</span> <span class="cm-number">8</span>) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QDataStream</span> <span class="cm-variable">headerStream</span>(<span class="cm-variable">m_buffer</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">headerStream</span>.<span class="cm-variable">setByteOrder</span>(<span class="cm-variable">QDataStream::BigEndian</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">headerStream</span> <span class="cm-operator">>></span> <span class="cm-variable">m_header</span>.<span class="cm-variable">fixedByte</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-keyword">if</span> (<span class="cm-variable">m_header</span>.<span class="cm-variable">fixedByte</span> <span class="cm-operator">!=</span> <span class="cm-number">0x27</span>) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-string">"Invalid fixed byte:"</span> <span class="cm-operator"><<</span> <span class="cm-variable">m_header</span>.<span class="cm-variable">fixedByte</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-keyword">return</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">headerStream</span> <span class="cm-operator">>></span> <span class="cm-variable">m_header</span>.<span class="cm-variable">messageType</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">headerStream</span> <span class="cm-operator">>></span> <span class="cm-variable">m_header</span>.<span class="cm-variable">messageId</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">headerStream</span> <span class="cm-operator">>></span> <span class="cm-variable">m_header</span>.<span class="cm-variable">payloadLength</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_reading_header</span> <span class="cm-operator">=</span> <span class="cm-atom">false</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_buffer</span>.<span class="cm-variable">remove</span>(<span class="cm-number">0</span>, <span class="cm-number">8</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    <span class="cm-keyword">if</span> (<span class="cm-operator">!</span><span class="cm-variable">m_reading_header</span> <span class="cm-operator">&&</span> <span class="cm-variable">m_buffer</span>.<span class="cm-variable">size</span>() <span class="cm-operator">>=</span> <span class="cm-variable-3">int</span>(<span class="cm-variable">m_header</span>.<span class="cm-variable">payloadLength</span>))</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">    {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">QByteArray</span> <span class="cm-variable">payload</span> <span class="cm-operator">=</span> <span class="cm-variable">m_buffer</span>.<span class="cm-variable">left</span>(<span class="cm-variable">m_header</span>.<span class="cm-variable">payloadLength</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-variable">m_buffer</span>.<span class="cm-variable">remove</span>(<span class="cm-number">0</span>, <span class="cm-variable">m_header</span>.<span class="cm-variable">payloadLength</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">
</span></span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-keyword">switch</span> (<span class="cm-variable">m_header</span>.<span class="cm-variable">messageType</span>) {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-keyword">case</span> <span class="cm-variable">SET_PARAM</span>: {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-string">"Set parameter response received, messageId:"</span> <span class="cm-operator"><<</span> <span class="cm-variable">m_header</span>.<span class="cm-variable">messageId</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-keyword">break</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-keyword">case</span> <span class="cm-variable">GET_PARAM</span>: {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">QDataStream</span> <span class="cm-variable">payloadStream</span>(<span class="cm-variable">payload</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">payloadStream</span>.<span class="cm-variable">setByteOrder</span>(<span class="cm-variable">QDataStream::BigEndian</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">QString</span> <span class="cm-variable">paramName</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">QString</span> <span class="cm-variable">paramValue</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">payloadStream</span> <span class="cm-operator">>></span> <span class="cm-variable">paramName</span> <span class="cm-operator">>></span> <span class="cm-variable">paramValue</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-string">"Get parameter response received, messageId:"</span> <span class="cm-operator"><<</span> <span class="cm-variable">m_header</span>.<span class="cm-variable">messageId</span> <span class="cm-operator"><<</span> <span class="cm-string">"paramName:"</span> <span class="cm-operator"><<</span> <span class="cm-variable">paramName</span> <span class="cm-operator"><<</span> <span class="cm-string">"paramValue:"</span> <span class="cm-operator"><<</span> <span class="cm-variable">paramValue</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-keyword">if</span>(<span class="cm-variable">paramName</span> <span class="cm-operator">==</span> <span class="cm-string">"brightness"</span>)</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">                <span class="cm-variable">emit</span> <span class="cm-variable">brightness_signal</span>(<span class="cm-variable">paramValue</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-keyword">break</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-keyword">case</span> <span class="cm-variable">GET_IMAGE</span>: {</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">QImage</span> <span class="cm-variable">image</span>(<span class="cm-number">640</span>, <span class="cm-number">480</span>, <span class="cm-variable">QImage::Format_RGB32</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">image</span>.<span class="cm-variable">loadFromData</span>(<span class="cm-variable">payload</span>, <span class="cm-string">"PNG"</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-string">"Image received, messageId:"</span> <span class="cm-operator"><<</span> <span class="cm-variable">m_header</span>.<span class="cm-variable">messageId</span> <span class="cm-operator"><<</span> <span class="cm-string">"Image size:"</span> <span class="cm-operator"><<</span> <span class="cm-variable">image</span>.<span class="cm-variable">size</span>();</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">emit</span> <span class="cm-variable">image_signal</span>(<span class="cm-variable">image</span>);</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-keyword">break</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        <span class="cm-keyword">default</span>:</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">            <span class="cm-variable">qDebug</span>() <span class="cm-operator"><<</span> <span class="cm-string">"Unknown message type:"</span> <span class="cm-operator"><<</span> <span class="cm-variable">m_header</span>.<span class="cm-variable">messageType</span>;</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;">        }</span></pre><pre class=" CodeMirror-line " role="presentation"><span role="presentation" style="padding-right: 0.1px;"><span cm-text="" cm-zwsp="">