Android之網絡攝像頭

實現的功能就是兩個手機在一個局域網內可以互相觀看對方的攝像頭圖像,當然如果都是連接公網那么就能遠程互看了,,,,和視頻聊天差不多,,不過沒有聲音,,,,,,,,

源碼是在網上找的(具體地址忘了,如有侵犯請告知),親測能用,,其實一開始想直接用到自己現在做的東西上 ,不過直接加到自己現在的軟件上,調試了一下發現,,我想多了,老天總是不讓自己那么輕易的.......................

因為自己手頭上只有一個手機,所以就自己發給自己了,本想像寫其它文章似得詳細敘述一番,看了一下表,,感覺還是算了吧,,昨天把程序加到自己的軟件上然后修改,測試一直熬到了1點,然后下午上班的時候頭疼,困,然后就睡了1個小時.............年輕人不要老熬夜,,對身體不好,

 

上面的是自己的攝像頭預覽的,

下面的是通過TCP傳輸過來的

源碼如下

 

package com.example.realtimevideo;


import java.io.ByteArrayOutputStream;

import com.example.threadConnect.ClientThread;
import com.example.threadConnect.RevImageThread;


import android.graphics.Bitmap;
import android.graphics.ImageFormat;
import android.graphics.YuvImage;
import android.hardware.Camera;
import android.hardware.Camera.PreviewCallback;
import android.hardware.Camera.Size;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.app.Activity;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Menu;
import android.view.SurfaceHolder;
import android.view.Window;
import android.view.WindowManager;
import android.view.SurfaceHolder.Callback;
import android.view.SurfaceView;
import android.widget.ImageView;
import android.widget.RelativeLayout;

public class MainVideoActivity extends Activity{
    RevImageThread revImageThread;
    public static ImageView image;
    private static Bitmap bitmap;
    private static final int COMPLETED = 0x222;
    
    
    MyHandler handler;
    ClientThread clientThread;
    ByteArrayOutputStream outstream;
    
    SurfaceView surfaceView;
    SurfaceHolder  sfh;
    Camera camera;
    boolean isPreview = false;        //是否在瀏覽中
    static int screenWidth=300;
    static int screenHeight=300;

    @Override
    protected 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.activity_main_video);
        surfaceView = (SurfaceView)findViewById(R.id.surfaceView);
        image=(ImageView)findViewById(R.id.imageView1);
        
        handler = new MyHandler();
        clientThread = new ClientThread();
        new Thread(clientThread).start();
        
        revImageThread = new RevImageThread(handler);
        new Thread(revImageThread).start();
        
        DisplayMetrics dm = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(dm);
        screenWidth = dm.widthPixels;// 獲取屏幕分辨率寬度
        screenHeight = dm.heightPixels;
        
        
        image.setLayoutParams(new RelativeLayout.LayoutParams(screenWidth,screenHeight));  
        //image.setMaxHeight(screenHeight);
        //image.setMaxWidth(screenWidth);
        
        image.setMaxHeight(screenHeight/2);
        sfh = surfaceView.getHolder(); 
        sfh.setFixedSize(screenWidth, screenHeight/2);
         
        sfh.addCallback(new Callback(){

            @Override
            public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2,
                    int arg3) {
                // TODO Auto-generated method stub
                
            }

            @Override
            public void surfaceCreated(SurfaceHolder arg0) {
                // TODO Auto-generated method stub
                initCamera();
            }

            @Override
            public void surfaceDestroyed(SurfaceHolder arg0) {
                if (camera != null) {
                    if (isPreview)
                    
                    camera.stopPreview();
                    camera.release();
                    camera = null;
                }
                
            }
            
        });
        
    }
    

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main_video, menu);
        return true;
    }
    
    @SuppressWarnings("deprecation")
    private void initCamera() {
        if (!isPreview) {
            int k = 0;
            if((k=FindBackCamera())!=-1){
                camera = Camera.open(k);
            }else{
                camera = Camera.open();
            }
            ClientThread.size = camera.getParameters().getPreviewSize();   
        }
        if (camera != null && !isPreview) {
            try{
                camera.setPreviewDisplay(sfh);                 // 通過SurfaceView顯示取景畫面    
                Camera.Parameters parameters = camera.getParameters();                
                parameters.setPreviewSize(screenWidth, screenHeight/4*3);   
                 /* 每秒從攝像頭捕獲5幀畫面， */  
                parameters.setPreviewFrameRate(5); 
                parameters.setPictureFormat(ImageFormat.NV21);           // 設置圖片格式                
                parameters.setPictureSize(screenWidth, screenHeight/4*3);    // 設置照片的大小
                camera.setDisplayOrientation(90);
                camera.setPreviewCallback(new PreviewCallback(){
                    @Override
                    public void onPreviewFrame(byte[] data, Camera c) {
                        // TODO Auto-generated method stub
                         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){
                                    Message msg = clientThread.revHandler.obtainMessage();
                                    msg.what=0x111;
                                    msg.obj=image;
                                    clientThread.revHandler.sendMessage(msg);
                                }
                            }catch(Exception ex){  
                                    Log.e("Sys","Error:"+ex.getMessage());  
                            }
                    }
                    
                });
                camera.startPreview();                                   // 開始預覽                
                camera.autoFocus(null);                                  // 自動對焦
            } catch (Exception e) {
                e.printStackTrace();
            }
            isPreview = true;
        }
    }
    
    static class MyHandler extends Handler{
        @Override
        public void handleMessage(Message msg){
             if (msg.what == COMPLETED) {         
                 bitmap = (Bitmap)msg.obj;
                 
                 //image.setPivotX(image.getWidth()/2);
                  //image.setPivotX(image.getHeight()/2);
                  
                  
                 //image.setImageBitmap(bitmap);
                 image.setLayoutParams(new RelativeLayout.LayoutParams(screenWidth,screenHeight)); 
                 image.setImageBitmap(bitmap);
                 image.setRotation(90);
                 super.handleMessage(msg);
             }  
        }
    }
    
    //調用前置攝像頭
    private int FindFrontCamera(){  
         int cameraCount = 0;  
         Camera.CameraInfo cameraInfo = new Camera.CameraInfo();  
         cameraCount = Camera.getNumberOfCameras(); // get cameras number   
        
         for ( int camIdx = 0; camIdx < cameraCount;camIdx++ ) {  
             Camera.getCameraInfo( camIdx, cameraInfo ); // get camerainfo   
             if ( cameraInfo.facing ==Camera.CameraInfo.CAMERA_FACING_FRONT ) {   
                 // 代表攝像頭的方位，目前有定義值兩個分別為CAMERA_FACING_FRONT前置和CAMERA_FACING_BACK后置   
                 return camIdx;  
              }  
         }  
         return -1;  
    } 
    
    //調用后置攝像頭
    private int FindBackCamera(){  
        int cameraCount = 0;  
        Camera.CameraInfo cameraInfo = new Camera.CameraInfo();  
        cameraCount = Camera.getNumberOfCameras(); // get cameras number   
        
        for ( int camIdx = 0; camIdx < cameraCount;camIdx++ ) {  
           Camera.getCameraInfo( camIdx, cameraInfo ); // get camerainfo   
           if ( cameraInfo.facing ==Camera.CameraInfo.CAMERA_FACING_BACK ) {   
               // 代表攝像頭的方位，目前有定義值兩個分別為CAMERA_FACING_FRONT前置和CAMERA_FACING_BACK后置   
               return camIdx;  
           }  
        }  
        return -1;  
    }  
}

 

 

 

package com.example.threadConnect;

import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;
import java.net.Socket;

import android.graphics.Rect;
import android.graphics.YuvImage;
import android.hardware.Camera.Size;
import android.os.Handler;
import android.os.Looper;
import android.os.Message;
import android.util.Log;

public class ClientThread implements Runnable {
    private static Socket socket ;
    private static ByteArrayOutputStream outputstream;
    private static byte byteBuffer[] = new byte[1024];
    public static Size size;
    
    //接受UI線程消息
    public MyHandler revHandler;
    
    BufferedReader br= null;
    static OutputStream os = null;
    

    @Override
    public void run() {
        Looper.prepare();
        //接受UI發來的信息
        revHandler = new MyHandler();
        Looper.loop();
    }
    
    public static class MyHandler extends Handler{
        @Override
        public void handleMessage(Message msg){
            if(msg.what==0x111){
                try {
                    socket = new Socket("192.168.3.10",8081);
                    os = socket.getOutputStream(); 
                    YuvImage image = (YuvImage) msg.obj;
                    if(socket.isOutputShutdown()){
                        Log.e("output is down","ljq");
                    }else{
                        os = socket.getOutputStream();  
                        outputstream = new ByteArrayOutputStream();
                        image.compressToJpeg(new Rect(0, 0, size.width, size.height), 80, outputstream);
                        ByteArrayInputStream inputstream = new ByteArrayInputStream(outputstream.toByteArray());
                        int amount;
                        while ((amount = inputstream.read(byteBuffer)) != -1) {
                            os.write(byteBuffer, 0, amount);
                        }
                        os.write("\n".getBytes());
                        outputstream.flush();
                        outputstream.close();
                        os.flush();
                        os.close();
                        socket.close();
                    }
                } catch (UnsupportedEncodingException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
            }
        }
    }
}

 

 

 

package com.example.threadConnect;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.ServerSocket;
import java.net.Socket;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Handler;
import android.os.Message;

public class RevImageThread implements Runnable {

    public Socket s;
    public ServerSocket ss;
    
    //向UI線程發送消息
    private Handler handler;
    
    private Bitmap bitmap;
    private static final int COMPLETED = 0x222;
    
    public RevImageThread(Handler handler){
        this.handler = handler;
    }
    
    public void run()
    {    
        byte [] buffer = new byte[1024];
        int len = 0;

    
        try {
            ss = new ServerSocket(8080);
        } catch (IOException e2) {
            // TODO Auto-generated catch block
            e2.printStackTrace();
        }

        InputStream ins = null;
        while(true){
            
            try {
                s = ss.accept();
                ins = s.getInputStream();
                
                ByteArrayOutputStream outStream = new ByteArrayOutputStream(); 
                while( (len=ins.read(buffer)) != -1){      
                    outStream.write(buffer, 0, len); 
                }
                ins.close();
                
                byte data[] = outStream.toByteArray(); 
                bitmap = BitmapFactory.decodeByteArray(data, 0, data.length); 
                
                Message msg =handler.obtainMessage();
                msg.what = COMPLETED;
                msg.obj = bitmap;
                handler.sendMessage(msg);
                
                outStream.flush();
                outStream.close();
                if(!s.isClosed()){
                    s.close();
                }
                
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            //Bitmap bitmap = BitmapFactory.decodeStream(ins);
            
        }
    }

}

 布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context=".MainVideoActivity" >

    <SurfaceView 
        android:id="@+id/surfaceView"
        android:layout_width="fill_parent" 
        android:layout_height="fill_parent"
        android:scaleType="fitCenter"
        />
     <ImageView 
        android:id="@+id/imageView1"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
       
        android:src="@drawable/ic_launcher"/>
</RelativeLayout>

權限

 

對了關於如何使用

這個程序把發送圖像和接收圖像做在了一塊了

其實只有知道TCP通信應該就會用,,不對源程序沒提供地址輸入框,,,,,,,后期自己加上了,不過現在感覺需要修改,因為源程序是不停的申請不停的釋放,,,,,,

未完,,待續,,改好了就把自己完善的代碼奉上, 加詳細解釋,一步一步的寫出來..................