多媒体技术课程设计报告.doc

二九 二一 学年第 二 学期应用技术学院课程设计报告书课程名称： 多媒体技术 班 级： 09级网络工程 学 号： 姓 名： 指导教师： 二一 年 六 月目录1.需求分析21.1课程设计题目21.2课程设计要求21.3系统功能需求分析22.概要设计33.详细设计43.1界面设计43.2行程编码设计114.程序调试144.1源文件的压缩144.2源文件的解压155.总结181.需求分析1.1课程设计题目信源与信道编/解码练习。1.2课程设计要求 1) 要求利用程序设计软件(如VC、Java、Matlab)制作一个能完成信道编/解码(海明/CRC码)，信源编/解码(如行程编码)软件。2) 基本要求为编制软件至少能根据所输入的数据完成信源、信道编解码，其中信道编码要求能产生1-2位随机错误，且能纠1位错，最后是能读取txt文件，或者直接读取图片来完成，如能对视频完成则更佳。3) 编写的软件编译后能直接运行，验证编/解码效果，否则无效。 1.3系统功能需求分析 操作环境（软件、硬件及条件） Windws 9x/NT/2000/XP/2003 NetBeans IDE 6.8 系统功能此软件是在JAVA平台下编写的 ，能根据所输入的数据完成信道（海明码）、信源编解码（行程编码），其中信道编码（海明码）能产生1位随机错误，且能纠1位错，最后是能直接读取图片或txt文件来完成。 用户操作流程 编 码： 打开（选择源文件） 保存（选择目标文件） 开始编码 校验查看所存目标文件是否压缩成功 解 码： 打开（选择已压缩的文件） 保存（选择目标文件）开始解码查看所存目标文件是否解压成功2.概要设计系统总体框架： 压 缩检 错打开源文件 纠 错得到源文件 解 压3.详细设计本次课程设计中我主要负责界面设计和行程编码，故作以下详细介绍。3.1界面设计界面设计如图3-1所示：图3-1界面设计代码如下：package DMTcode;import java.io.File;import javax.swing.JFileChooser;import javax.swing.JOptionPane;public class NewJFrame extends javax.swing.JFrame int rndChooser; byte targetBit; private int i; File f1,f2; byte mybyte1,mybyte2; public NewJFrame() initComponents(); this.setTitle(重庆大学 09网络工程 尹力 沈小波 多媒体课程设计); SuppressWarnings(unchecked)； private void initComponents() jPanel1 = new javax.swing.JPanel(); jButton1 = new javax.swing.JButton(); jLabel1 = new javax.swing.JLabel(); jTextField1 = new javax.swing.JTextField(); jLabel2 = new javax.swing.JLabel(); jTextField2 = new javax.swing.JTextField(); jButton2 = new javax.swing.JButton(); jButton4 = new javax.swing.JButton(); jButton5 = new javax.swing.JButton(); jPanel2 = new javax.swing.JPanel(); jLabel3 = new javax.swing.JLabel(); jLabel4 = new javax.swing.JLabel(); jPanel3 = new javax.swing.JPanel(); jLabel5 = new javax.swing.JLabel(); jLabel6 = new javax.swing.JLabel(); jLabel7 = new javax.swing.JLabel(); jLabel8 = new javax.swing.JLabel(); jButton3 = new javax.swing.JButton(); jLabel9 = new javax.swing.JLabel(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder(行程编码文件); jButton1.setText(打开); jButton1.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent evt) jButton1ActionPerformed(evt); ); jLabel1.setText(源文件：); jTextField1.setEnabled(false); jLabel2.setText(目标文件：); jTextField2.setEnabled(false); jButton2.setText(保存); jButton2.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent evt) jButton2ActionPerformed(evt); ); jButton4.setText(开始编码); jButton4.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent evt) jButton4ActionPerformed(evt); ); jButton5.setText(开始解码); jButton5.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent evt) jButton5ActionPerformed(evt); ); javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1); jPanel1.setLayout(jPanel1Layout); jPanel1Layout.setHorizontalGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup() .addGap(38, 38, 38) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup() .addComponent(jLabel2) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(jTextField2) .addGroup(jPanel1Layout.createSequentialGroup() .addComponent(jLabel1) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 174, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 103, Short.MAX_VALUE) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(jButton2) .addComponent(jButton1) .addGap(50, 50, 50) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jButton5) .addComponent(jButton4) .addContainerGap(98, Short.MAX_VALUE) ); jPanel1Layout.setVerticalGroup( jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup() .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel1Layout.createSequentialGroup() .addGap(17, 17, 17) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel1) .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(7, 7, 7) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel2) .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGroup(jPanel1Layout.createSequentialGroup() .addContainerGap() .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jButton1) .addComponent(jButton4) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jButton5) .addComponent(jButton2) .addContainerGap(11, Short.MAX_VALUE) ); getContentPane().add(jPanel1, java.awt.BorderLayout.PAGE_START); jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder( 文件信息); jPanel2.setPreferredSize(new java.awt.Dimension(442, 40); jLabel3.setText(源文件大小：); jLabel4.setText(目标文件大小：); javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2); jPanel2.setLayout(jPanel2Layout); jPanel2Layout.setHorizontalGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel2Layout.createSequentialGroup() .addGap(29, 29, 29) .addComponent(jLabel3) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 268, Short.MAX_VALUE) .addComponent(jLabel4) .addGap(200, 200, 200) ); jPanel2Layout.setVerticalGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel2Layout.createSequentialGroup() .addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel3) .addComponent(jLabel4) .addContainerGap(17, Short.MAX_VALUE) ); getContentPane().add(jPanel2, java.awt.BorderLayout.CENTER); jPanel3.setBorder(javax.swing.BorderFactory.createTitledBorder(海明编码信息); jLabel6.setText(字节二进制编码：); jLabel7.setText(字节海明编码：); jLabel8.setText(随机出错：); jButton3.setText(校验); jButton3.addActionListener(new java.awt.event.ActionListener() public void actionPerformed(java.awt.event.ActionEvent evt) jButton3ActionPerformed(evt); ); jLabel9.setText(纠正：); javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3); jPanel3.setLayout(jPanel3Layout); jPanel3Layout.setHorizontalGroup( jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel3Layout.createSequentialGroup() .addGap(26, 26, 26) .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel3Layout.createSequentialGroup() .addComponent(jLabel7) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 321, Short.MAX_VALUE) .addComponent(jLabel9) .addGap(186, 186, 186) .addGroup(jPanel3Layout.createSequentialGroup() .addComponent(jLabel8) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 278, Short.MAX_VALUE) .addComponent(jButton3) .addGap(232, 232, 232) .addGroup(jPanel3Layout.createSequentialGroup() .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(jLabel6) .addComponent(jLabel5) .addContainerGap(531, Short.MAX_VALUE) ); jPanel3Layout.setVerticalGroup( jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(jPanel3Layout.createSequentialGroup() .addContainerGap() .addComponent(jLabel5) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(jLabel6) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel7) .addComponent(jLabel9) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE) .addComponent(jLabel8) .addComponent(jButton3) .addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) ); getContentPane().add(jPanel3, java.awt.BorderLayout.SOUTH); pack(); / private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) / TODO add your handling code here: JFileChooser chooser=new JFileChooser(); chooser.showOpenDialog(jLabel1); jTextField1.setText(chooser.getSelectedFile().getPath().toString(); jLabel3.setText(源文件大小：+chooser.getSelectedFile().length()+字节); f1=chooser.getSelectedFile(); private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) / TODO add your handling code here: JFileChooser chooser1=new JFileChooser(); chooser1.showSaveDialog(jLabel1); f2=chooser1.getSelectedFile(); jTextField2.setText(chooser1.getSelectedFile().getPath().toString(); jLabel4.setText(目标文件大小：+chooser1.getSelectedFile().length()+字节); private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) jLabel8.setText(随机出错：+myOp.revertAndCheckhammingCode()0); jLabel9.setText(纠正：+myOp.revertAndCheckhammingCode()1); private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) / TODO add your handling code here: /*调用编码方法开始压缩文件*/ if(jTextField1.getText()=null&jTextField2.getText()=null) JOptionPane.showMessageDialog(null, 还没有设置文件呢！); else try mybyte1=myOp.importFile(f1); mybyte2=myOp.zipCode(mybyte1); myOp.exportFile(f2, mybyte2); jLabel4.setText(目标文件大小：+f2.length()+字节); rndChooser=(int)(Math.random()*mybyte2.length); targetBit=mybyte2rndChooser; jLabel5.setText(字节值：+String.valueOf(targetBit); jLabel6.setText(字节二进制编码：+myOp.hammingCode(targetBit)0); jLabel7.setText(字节海明编码：+myOp.hammingCode(targetBit)1); catch(Exception e) private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) /*调用解码码方法开始解压文件*/ if(jTextField1.getText()=null&jTextField2.getText()=null) JOptionPane.showMessageDialog(null, 还没有设置文件呢！); else try mybyte1=myOp.importFile(f1); mybyte2=myOp.unzipCode(mybyte1); myOp.exportFile(f2, mybyte2); jLabel4.setText(目标文件大小：+f2.length()+字节); rndChooser=(int)(Math.random()*mybyte2.length); targetBit=mybyte2rndChooser; jLabel5.setText(字节值：+String.valueOf(targetBit); jLabel6.setText(字节二进制编码：+myOp.hammingCode(targetBit)0); jLabel7.setText(字节海明编码：+myOp.hammingCode(targetBit)1); catch(Exception e) public static void main(String args) java.awt.EventQueue.invokeLater(new Runnable() public void run() new NewJFrame().setVisible(true); ); private javax.swing.JButton jButton1; private javax.swing.JButton jButton2; private javax.swing.JButton jButton3; private javax.swing.JButton jButton4; private javax.swing.JButton jButton5; private javax.swing.JLabel jLabel1; private javax.swing.JLabel jLabel2; private javax.swing.JLabel jLabel3; private javax.swing.JLabel jLabel4; private javax.swing.JLabel jLabel5; private javax.swing.JLabel jLabel6; private javax.swing.JLabel jLabel7; private javax.swing.JLabel jLabel8; private javax.swing.JLabel jLabel9; private javax.swing.JPanel jPanel1; private javax.swing.JPanel jPanel2; private javax.swing.JPanel jPanel3; private javax.swing.JTextField jTextField1; private javax.swing.JTextField jTextField2;3.2行程编码设计由界面中的开始解码调用行程编码的函数，其代码如下： public static byte zipCode(byte mycode) byte tempArray=new byte10000000;/构建一个足够大的临时数组； int lengthArray=new int4;/临时的存位数长度的数组 lengthArray0=-127; int i=1; int n=0; int mycount=1; do if(mycodei=mycodei