基于mplayer的小的媒体播放器
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有许多bug，仅供参考，不建议使用基于Mplayer的视频播放器1.需求分析:1.该程序能够加载指定路径下所有的音视频文件(.mp3 .mp4 .avi .rm .rmvb .flv .wma)2.能够通过界面操作视频播放器支持:上键下键回车ESC支持:焦点定位1.一级页面功能如下:+-------------------+| 视频播放器 ||-------------------||1.查看播放列表||2.开始/暂停 ||3.停止 ||4.上一个 ||5.下一个 ||6.快进 ||7.定位 ||8.播放方式 ||9.退出 |+-------------------+ <link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/base.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/css/fancy.min.css" rel="stylesheet"/><link href="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89652307/raw.css" rel="stylesheet"/><div id="sidebar" style="display: none"><div id="outline"></div></div><div class="pf w0 h0" data-page-no="1" id="pf1"><div class="pc pc1 w0 h0"><img alt="" class="bi x0 y0 w1 h1" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89652307/bg1.jpg"/><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0">基于<span class="ff2"> Mp<span class="_ _0"></span>laye<span class="_ _0"></span>r </span>的视频<span class="_ _0"></span>播放器设<span class="_ _0"></span>计文档</div><div class="t m0 x2 h3 y2 ff2 fs1 fc0 sc0 ls0 ws0">1. <span class="ff1">引言</span></div><div class="t m0 x2 h4 y3 ff2 fs2 fc0 sc0 ls0 ws0">1.1 <span class="ff1">项目背<span class="_ _0"></span>景</span></div><div class="t m0 x2 h4 y4 ff3 fs2 fc0 sc1 ls0 ws0">该项目旨在开发一个基于<span class="ff4"> <span class="_ _1"> </span>Mplayer <span class="_ _1"> </span></span>的视频播放器，支持加载指定路径下的音视</div><div class="t m0 x2 h4 y5 ff3 fs2 fc0 sc1 ls0 ws0">频文件，<span class="_ _2"></span>并通过命令行界面进行播放控制。<span class="_ _2"></span>播放器支持顺序播放、<span class="_ _2"></span>随机播放、<span class="_ _2"></span>单</div><div class="t m0 x2 h4 y6 ff3 fs2 fc0 sc1 ls0 ws0">曲循环等模式，用户可通过简单的按键操作进行视频播放的控制。</div><div class="t m0 x2 h4 y7 ff2 fs2 fc0 sc0 ls0 ws0">1.2 <span class="ff1">目标</span></div><div class="t m0 x3 h5 y8 ff5 fs3 fc0 sc1 ls0 ws0">�<span class="_ _3"> </span><span class="ff3 fs4">支持加载和播放多种格式的音视频文件。</span></div><div class="t m0 x3 h5 y9 ff5 fs3 fc0 sc1 ls0 ws0">�<span class="_ _3"> </span><span class="ff3 fs4">提供用户友好的界面，允许通过键盘进行操作。</span></div><div class="t m0 x3 h5 ya ff5 fs3 fc0 sc1 ls0 ws0">�<span class="_ _3"> </span><span class="ff3 fs4">通过<span class="ff4"> <span class="_ _4"> </span>Mplayer <span class="_ _4"> </span></span>的控制接口实现播放、暂停、停止、快进等功能。</span></div><div class="t m0 x2 h3 yb ff2 fs1 fc0 sc0 ls0 ws0">2. <span class="ff1">系统架<span class="_ _0"></span>构</span></div><div class="t m0 x2 h4 yc ff2 fs2 fc0 sc0 ls0 ws0">2.1 <span class="ff1">总体架<span class="_ _0"></span>构</span></div><div class="t m0 x2 h4 yd ff3 fs2 fc0 sc1 ls0 ws0">系统采用模块化设计，主要分为以下几个模块：</div><div class="t m0 x3 h5 ye ff5 fs3 fc0 sc1 ls0 ws0">�<span class="_ _3"> </span><span class="ff1 fs4 sc0">文件管理模块<span class="_ _0"></span><span class="ff3 sc1">：负责扫描指定目录，加载支持的音视频文件并维护播放列表。</span></span></div><div class="t m0 x3 h5 yf ff5 fs3 fc0 sc1 ls0 ws0">�<span class="_ _3"> </span><span class="ff1 fs4 sc0">界面显示模块<span class="_ _0"></span><span class="ff3 sc1">：负责绘制用户界面和处理用户输入。</span></span></div><div class="t m0 x3 h5 y10 ff5 fs3 fc0 sc1 ls0 ws0">�<span class="_ _3"> </span><span class="ff1 fs4 sc0">播放控制模块<span class="_ _0"></span><span class="ff3 sc1">：通过<span class="ff4"> <span class="_ _4"> </span>Mplayer <span class="_ _4"> </span></span>的接口控制音视频的播放。</span></span></div><div class="t m0 x3 h5 y11 ff5 fs3 fc0 sc1 ls0 ws0">�<span class="_ _3"> </span><span class="ff1 fs4 sc0">命令处理模块<span class="_ _0"></span><span class="ff3 sc1">：负责接收用户输入的命令并调用相应的功能。</span></span></div><div class="t m0 x2 h4 y12 ff2 fs2 fc0 sc0 ls0 ws0">2.2 <span class="ff1">模块设<span class="_ _0"></span>计</span></div><div class="t m0 x2 h4 y13 ff1 fs2 fc0 sc0 ls0 ws0">文件管理模块<span class="_ _0"></span><span class="ff3 sc1">：</span></div><div class="t m0 x2 h5 y14 ff3 fs4 fc0 sc1 ls0 ws0">功能：扫描指定目录，识别音视频文件，生成播放列表。</div><div class="t m0 x2 h5 y15 ff3 fs4 fc0 sc1 ls0 ws0">依赖：文件系统<span class="ff4"> <span class="_ _4"> </span></span>。</div><div class="t m0 x2 h4 y16 ff1 fs2 fc0 sc0 ls0 ws0">界面显示模块<span class="_ _0"></span><span class="ff3 sc1">：</span></div><div class="t m0 x2 h5 y17 ff3 fs4 fc0 sc1 ls0 ws0">功能：根据当前状态打印界面，显示菜单选项、播放列表等。</div><div class="t m0 x2 h5 y18 ff3 fs4 fc0 sc1 ls0 ws0">数据结构：菜单项，当前焦点位置。</div></div><div class="pi" data-data='{"ctm":[1.611830,0.000000,0.000000,1.611830,0.000000,0.000000]}'></div></div><div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="/image.php?url=https://csdnimg.cn/release/download_crawler_static/89652307/bg2.jpg"><div class="t m0 x2 h4 y19 ff1 fs2 fc0 sc0 ls0 ws0">播放控制模块<span class="_ _0"></span><span class="ff3 sc1">：</span></div><div class="t m0 x2 h5 y1a ff3 fs4 fc0 sc1 ls0 ws0">功能：启动<span class="ff4"> <span class="_ _4"> </span>Mplayer <span class="_ _4"> </span></span>进程并通过管道发送控制命令。</div><div class="t m0 x2 h5 y1b ff3 fs4 fc0 sc1 ls0 ws0">依赖：<span class="ff4">Mplayer</span>，进程控制，管道通信。</div><div class="t m0 x2 h5 y1c ff3 fs4 fc0 sc1 ls0 ws0">数据结构：当前播放状态，当前播放文件，播放模式。</div><div class="t m0 x2 h4 y1d ff1 fs2 fc0 sc0 ls0 ws0">命令处理模块<span class="_ _0"></span><span class="ff3 sc1">：</span></div><div class="t m0 x2 h5 y1e ff3 fs4 fc0 sc1 ls0 ws0">功能：捕获用户输入并解析，执行相应的操作（播放、暂停、快进等）。</div><div class="t m0 x2 h5 y1f ff3 fs4 fc0 sc1 ls0 ws0">依赖：终端输入处理库，键盘事件捕获。</div><div class="t m0 x2 h5 y20 ff3 fs4 fc0 sc1 ls0 ws0">数据结构：当前用户输入，当前界面状态。</div><div class="t m0 x2 h3 y21 ff2 fs1 fc0 sc0 ls0 ws0">3. <span class="ff1">流程设<span class="_ _0"></span>计</span></div><div class="t m0 x2 h4 y22 ff2 fs2 fc0 sc0 ls0 ws0">3.1 <span class="ff1">系统启<span class="_ _0"></span>动流程</span></div><div class="t m0 x2 h4 y23 ff6 fs2 fc0 sc1 ls0 ws0">[<span class="ff3">启动程序</span>] <span class="ff3">→</span> [<span class="ff3">加载播放列表</span>] <span class="ff3">→</span> [<span class="ff3">显示主菜单</span>] <span class="ff3">→</span> [<span class="ff3">等待用户输入</span>]</div><div class="t m0 x2 h4 y24 ff2 fs2 fc0 sc0 ls0 ws0">3.2 <span class="ff1">用户操<span class="_ _0"></span>作流程</span></div><div class="t m0 x2 h4 y25 ff6 fs2 fc0 sc1 ls0 ws0">[<span class="ff3">用户输入<span class="_ _2"></span><span class="ff6">] <span class="ff3">→</span> [<span class="ff3">处理输入<span class="_ _5"></span><span class="ff6">] <span class="ff3">→</span> [<span class="ff3">更新界面<span class="_ _2"></span><span class="ff6">/<span class="ff3">播放状态<span class="_ _5"></span><span class="ff6">] <span class="ff3">→</span> [<span class="ff3">显示新界面<span class="_ _2"></span><span class="ff6">] <span class="ff3">→</span> [<span class="ff3">等</span></span></span></span></span></span></span></span></span></span></span></div><div class="t m0 x2 h4 y26 ff3 fs2 fc0 sc1 ls0 ws0">待下一次输入<span class="ff6">]</span></div><div class="t m0 x2 h4 y27 ff2 fs2 fc0 sc0 ls0 ws0">3.3 <span class="ff1">播放控<span class="_ _0"></span>制流程</span></div><div class="t m0 x2 h4 y28 ff6 fs2 fc0 sc1 ls0 ws0">[<span class="ff3">选择播放<span class="_ _6"></span><span class="ff6">/<span class="ff3">暂停<span class="_ _6"></span><span class="ff6">] <span class="_ _7"></span><span class="ff3">→<span class="ff6"> <span class="_ _7"></span>[<span class="ff3">检查当前状态<span class="_ _6"></span><span class="ff6">] <span class="_ _7"></span><span class="ff3">→<span class="ff6"> <span class="_ _7"></span>[<span class="ff3">执行播放<span class="_ _6"></span><span class="ff6">/<span class="ff3">暂停命令<span class="_ _6"></span><span class="ff6">] <span class="_ _7"></span><span class="ff3">→<span class="ff6"> <span class="_ _7"></span>[<span class="ff3">更新播放状态<span class="_ _6"></span><span class="ff6">]</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></div><div class="t m0 x2 h4 y29 ff2 fs2 fc0 sc0 ls0 ws0">3.4 <span class="ff1">快进控<span class="_ _0"></span>制流程</span></div><div class="t m0 x2 h4 y2a ff6 fs2 fc0 sc1 ls0 ws0">[<span class="ff3">选择快进<span class="_ _6"></span><span class="ff6">] <span class="ff3">→</span> [<span class="ff3">切换播放速度<span class="_ _6"></span><span class="ff6">] <span class="ff3">→</span> [<span class="ff3">发送命令至</span> Mplayer] <span class="ff3">→</span> [<span class="ff3">更新界面显示<span class="_ _6"></span><span class="ff6">]</span></span></span></span></span></span></div><div class="t m0 x2 h4 y2b ff2 fs2 fc0 sc0 ls0 ws0">3.5 <span class="ff1">播放模<span class="_ _0"></span>式切换流程</span></div><div class="t m0 x2 h4 y2c ff6 fs2 fc0 sc1 ls0 ws0">[<span class="ff3">选择播放模式</span>] <span class="ff3">→</span> [<span class="ff3">切换播放模式</span>] <span class="ff3">→</span> [<span class="ff3">更新播放模式</span>] <span class="ff3">→</span> [<span class="ff3">更新界面显示</span>]</div><div class="t m0 x2 h3 y2d ff2 fs1 fc0 sc0 ls0 ws0">4. <span class="ff1">界面设<span class="_ _0"></span>计</span></div><div class="t m0 x2 h4 y2e ff2 fs2 fc0 sc0 ls0 ws0">4.1 <span class="ff1">主菜单<span class="_ _0"></span>界面</span></div></div><div class="pi" data-data='{"ctm":[1.611830,0.000000,0.000000,1.611830,0.000000,0.000000]}'></div></div>