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基於Android的遠程視頻監控系統(附源碼下載)

基本過程是Android作為socket客戶端將采集到的每一幀圖像數據發送出去,PC作為服務器接收並顯示每一幀圖像實現遠程監控。圖片如下(後來PC端加了個拍照功能)。。。

(PS。剛學android和java不久很多東西還不懂,高手若是知道哪些地方可以繼續優化的話還請多多指點下啊)

系統代碼如下:
一、android手機客戶端
(1)AndroidManifest.xml文件。添加camera和socket權限,並設置了程序開始執行的activity、

?<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="org.wanghai.CameraTest"
    android:versionCode="1"
    android:versionName="1.0" >
 
    <uses-sdk android:minSdkVersion="15" />
     
    <!-- 授予程序使用攝像頭的權限 -->
        <uses-permission android:name="android.permission.CAMERA" /> 
        <uses-feature android:name="android.hardware.camera" /> 
        <uses-feature android:name="android.hardware.camera.autofocus" />
        <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.KILL_BACKGROUND_PROCESSES"/>
    <uses-permission android:name="android.permission.RESTART_PACKAGES"/>
 
    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
                 
        <activity
            android:name=".GetIP"
            android:screenOrientation="landscape"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".CameraTest"
            android:screenOrientation="landscape"
            android:label="@string/app_name" >
 
        </activity>
         
    </application>
 
</manifest>

  (2)main.xml 設置surfaceview用於攝像頭采集圖像的預覽

?<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
 
   <SurfaceView
        android:id="@+id/sView"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:scaleType="fitCenter"/>
 
</LinearLayout>

  (3)login.xml 登錄界面,用於輸入服務器IP

?<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/loginForm"
        android:orientation="vertical"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        >
 
<TableRow>            
<TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="IP:"
        android:textSize="10pt"
        />
<!-- 輸入用戶名的文本框 -->
<EditText
    android:id="@+id/ipedittext"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:digits="0123456789."
        android:hint="請填寫服務器IP"
        android:selectAllOnFocus="true"
        />
</TableRow>
 
</TableLayout>

  (4)GetIP.java 獲得服務器IP後,通過Intent啟動CameraTest的activity,ip信息通過Bundle傳遞 【Linux公社 http://www.linuxidc.com 】

?public class GetIP extends Activity {
        String ipname = null;
        @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // 設置全屏
        requestWindowFeature(Window.FEATURE_NO_TITLE);
             getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.main);        
       
              final Builder builder = new AlertDialog.Builder(this);   //定義一個AlertDialog.Builder對象                                         
                builder.setTitle("登錄服務器對話框");                          // 設置對話框的標題
                 
                //裝載/res/layout/login.xml界面布局
                TableLayout loginForm = (TableLayout)getLayoutInflater().inflate( R.layout.login, null);                
                final EditText iptext = (EditText)loginForm.findViewById(R.id.ipedittext);                                
                builder.setView(loginForm);                              // 設置對話框顯示的View對象
                // 為對話框設置一個“登錄”按鈕
                builder.setPositiveButton("登錄"
                        // 為按鈕設置監聽器
                        , new OnClickListener() {
                                @Override
                                public void onClick(DialogInterface dialog, int which) {
                                        //此處可執行登錄處理
                                        ipname = iptext.getText().toString().trim();
                                        Bundle data = new Bundle();
                                        data.putString("ipname",ipname);                                        
                                        Intent intent = new Intent(GetIP.this,CameraTest.class);
                                        intent.putExtras(data);
                                        startActivity(intent);
                                }
                        });
                // 為對話框設置一個“取消”按鈕
                builder.setNegativeButton("取消"
                        ,  new OnClickListener()
                        {
                                @Override
                                public void onClick(DialogInterface dialog, int which)
                                {
                                        //取消登錄,不做任何事情。
                                        System.exit(1);
                                }
                        });
                //創建、並顯示對話框
                builder.create().show();
        }
}

  (5)CameraTest.java 程序主體。設置PreviewCallback後,每當一幀圖像數據采集完成後將調用PreviewCallback的onPreviewFrame函數。在這裡我們將YUV格式數據轉為jpg,再啟用線程將數據通過socket發送出去。

?public class CameraTest extends Activity {
        SurfaceView sView;
        SurfaceHolder surfaceHolder;
        int screenWidth, screenHeight;        
        Camera camera;                    // 定義系統所用的照相機        
        boolean isPreview = false;        //是否在浏覽中
        private String ipname;
 
        @SuppressWarnings("deprecation")
        @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // 設置全屏
             requestWindowFeature(Window.FEATURE_NO_TITLE);
             getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);
        setContentView(R.layout.main);
         
        // 獲取IP地址
        Intent intent = getIntent();
        Bundle data = intent.getExtras();
        ipname = data.getString("ipname");
                         
                screenWidth = 640;
                screenHeight = 480;                
                sView = (SurfaceView) findViewById(R.id.sView);                  // 獲取界面中SurfaceView組件                
                surfaceHolder = sView.getHolder();                               // 獲得SurfaceView的SurfaceHolder
                 
                // 為surfaceHolder添加一個回調監聽器
                surfaceHolder.addCallback(new Callback() {
                        @Override
                        public void surfaceChanged(SurfaceHolder holder, int format, int width,int height) {                                
                        }
                        @Override
                        public void surfaceCreated(SurfaceHolder holder) {                                                        
                                initCamera();                                            // 打開攝像頭
                        }
                        @Override
                        public void surfaceDestroyed(SurfaceHolder holder) {
                                // 如果camera不為null ,釋放攝像頭
                                if (camera != null) {
                                        if (isPreview)
                                                camera.stopPreview();
                                        camera.release();
                                        camera = null;
                                }
                            System.exit(0);
                        }                
                });
                // 設置該SurfaceView自己不維護緩沖    
                surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
                 
    }
     
    private void initCamera() {
            if (!isPreview) {
                        camera = Camera.open();
                }
                if (camera != null && !isPreview) {
                        try{
                                Camera.Parameters parameters = camera.getParameters();                                
                                parameters.setPreviewSize(screenWidth, screenHeight);    // 設置預覽照片的大小                                
                                parameters.setPreviewFpsRange(20,30);                    // 每秒顯示20~30幀                                
                                parameters.setPictureFormat(ImageFormat.NV21);           // 設置圖片格式                                
                                parameters.setPictureSize(screenWidth, screenHeight);    // 設置照片的大小
                                //camera.setParameters(parameters);                      // android2.3.3以後不需要此行代碼
                                camera.setPreviewDisplay(surfaceHolder);                 // 通過SurfaceView顯示取景畫面                                
                        camera.setPreviewCallback(new StreamIt(ipname));         // 設置回調的類                                
                                camera.startPreview();                                   // 開始預覽                                
                                camera.autoFocus(null);                                  // 自動對焦
                        } catch (Exception e) {
                                e.printStackTrace();
                        }
                        isPreview = true;
                }
    }
     
}
 
class StreamIt implements Camera.PreviewCallback {
        private String ipname;
        public StreamIt(String ipname){
                this.ipname = ipname;
        }
         
    @Override
    public void onPreviewFrame(byte[] data, Camera camera) {
        Size size = camera.getParameters().getPreviewSize();          
        try{ 
                //調用image.compressToJpeg()將YUV格式圖像數據data轉為jpg格式
            YuvImage image = new YuvImage(data, ImageFormat.NV21, size.width, size.height, null);  
            if(image!=null){
                    ByteArrayOutputStream outstream = new ByteArrayOutputStream();
                image.compressToJpeg(new Rect(0, 0, size.width, size.height), 80, outstream); 
                outstream.flush();
                //啟用線程將圖像數據發送出去
                Thread th = new MyThread(outstream,ipname);
                th.start();               
            }  
        }catch(Exception ex){  
            Log.e("Sys","Error:"+ex.getMessage());  
        }        
    }
}
     
class MyThread extends Thread{        
        private byte byteBuffer[] = new byte[1024];
        private OutputStream outsocket;        
        private ByteArrayOutputStream myoutputstream;
        private String ipname;
         
        public MyThread(ByteArrayOutputStream myoutputstream,String ipname){
                this.myoutputstream = myoutputstream;
                this.ipname = ipname;
        try {
                        myoutputstream.close();
                } catch (IOException e) {
                        e.printStackTrace();
                }
        }
         
    public void run() {
        try{
                //將圖像數據通過Socket發送出去
            Socket tempSocket = new Socket(ipname, 6000);
            outsocket = tempSocket.getOutputStream();
            ByteArrayInputStream inputstream = new ByteArrayInputStream(myoutputstream.toByteArray());
            int amount;
            while ((amount = inputstream.read(byteBuffer)) != -1) {
                outsocket.write(byteBuffer, 0, amount);
            }
            myoutputstream.flush();
            myoutputstream.close();
            tempSocket.close();                   
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
 
}

  二、PC服務器端
ImageServer.java 用於顯示圖像,並且可以拍照

?public class ImageServer {        
    public static ServerSocket ss = null;
     
    public static void main(String args[]) throws IOException{    
            ss = new ServerSocket(6000);
         
        final ImageFrame frame = new ImageFrame(ss);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
        
        while(true){
                frame.panel.getimage();
            frame.repaint();
        }        
    }
        
}
 
/** 
    A frame with an image panel
*/
@SuppressWarnings("serial")
class ImageFrame extends JFrame{
        public ImagePanel panel;
        public JButton jb;
    
    public ImageFrame(ServerSocket ss){
               // get screen dimensions              
               Toolkit kit = Toolkit.getDefaultToolkit();
        Dimension screenSize = kit.getScreenSize();
        int screenHeight = screenSize.height;
        int screenWidth = screenSize.width;
 
        // center frame in screen
        setTitle("ImageTest");
        setLocation((screenWidth - DEFAULT_WIDTH) / 2, (screenHeight - DEFAULT_HEIGHT) / 2);
        setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);
 
        // add panel to frame
        this.getContentPane().setLayout(null);
        panel = new ImagePanel(ss);
        panel.setSize(640,480);
        panel.setLocation(0, 0);
        add(panel);
        jb = new JButton("拍照");
        jb.setBounds(0,480,640,50);
        add(jb);
        saveimage saveaction = new saveimage(ss);
        jb.addActionListener(saveaction);
    }
 
    public static final int DEFAULT_WIDTH = 640;
    public static final int DEFAULT_HEIGHT = 560;  
}
 
/**
   A panel that displays a tiled image
*/
@SuppressWarnings("serial")
class ImagePanel extends JPanel {     
    private ServerSocket ss;
    private Image image;
    private InputStream ins;
          
    public ImagePanel(ServerSocket ss) {  
            this.ss = ss;
    }
     
    public void getimage() throws IOException{
            Socket s = this.ss.accept();
        System.out.println("連接成功!");
        this.ins = s.getInputStream();
                this.image = ImageIO.read(ins);
                this.ins.close();
    }
    
    public void paintComponent(Graphics g){  
        super.paintComponent(g);    
        if (image == null) return;
        g.drawImage(image, 0, 0, null);
    }
 
}
 
class saveimage implements ActionListener {
        RandomAccessFile inFile = null;
        byte byteBuffer[] = new byte[1024];
        InputStream ins;
        private ServerSocket ss;
         
        public saveimage(ServerSocket ss){
                this.ss = ss;
        }
         
        public void actionPerformed(ActionEvent event){
        try {
                        Socket s = ss.accept();
                        ins = s.getInputStream();
                         
                        // 文件選擇器以當前的目錄打開
                JFileChooser jfc = new JFileChooser(".");
                jfc.showSaveDialog(new javax.swing.JFrame());
                // 獲取當前的選擇文件引用
                File savedFile = jfc.getSelectedFile();
                 
                // 已經選擇了文件
                if (savedFile != null) {
                    // 讀取文件的數據,可以每次以快的方式讀取數據
                    try {
                                        inFile = new RandomAccessFile(savedFile, "rw");
                                } catch (FileNotFoundException e) {
                                        e.printStackTrace();
                                }
                }
 
            int amount;
            while ((amount = ins.read(byteBuffer)) != -1) {
                inFile.write(byteBuffer, 0, amount);
            }
            inFile.close();
            ins.close();
            s.close();
            javax.swing.JOptionPane.showMessageDialog(new javax.swing.JFrame(),
                    "已接保存成功", "提示!", javax.swing.JOptionPane.PLAIN_MESSAGE);
                } catch (IOException e) {
 
                        e.printStackTrace();
                }
        }
}

  開放源碼如下(android我使用的是4.03的SDK,其它版本請自行更改。2.3.3版本以下的請注意initCamera()裡被注釋掉的哪一行)

只能在android4.04系統的手機上運行成功哦。

下面是測試成功時的啟動畫面:

基於Android的遠程視頻監控系統源碼下載

免費下載地址在 http://linux.linuxidc.com/

用戶名與密碼都是www.linuxidc.com

具體下載目錄在 /2012年資料/8月/31日/基於Android的遠程視頻監控系統(附源碼下載)

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