Android 压缩视频传输
Server
package com.example.administrator.compress; import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Matrix; import android.graphics.PixelFormat; import android.hardware.Camera; import android.os.Bundle; import android.view.SurfaceHolder; import android.view.SurfaceView; import android.view.View; import android.widget.Button; import android.widget.ImageView; import java.io.ByteArrayOutputStream; import java.io.DataOutputStream; import java.io.IOException; import java.net.ServerSocket; import java.net.Socket; import java.nio.ByteBuffer; public class MainActivity extends Activity { private Camera mCamera = null; private SurfaceHolder holder = null; private Button button1,button2; private int width = 640; private int height = 480; ServerSocket server = null; Socket socket = null; private static final int PORT = 5555; DataOutputStream out = null; private byte []rgb_data = new byte[width*height*4]; ByteArrayOutputStream baos = null; Bitmap VideoBit = null; private ByteBuffer byteBuffer = null; ImageView imageView = null; private int number = 0; class Callback implements Camera.PreviewCallback { @Override public void onPreviewFrame(byte[] frame, Camera camera) { decodeYUV420SP(rgb_data,frame,width,height); VideoBit = Bitmap.createBitmap(width,height,Bitmap.Config.ARGB_8888); byteBuffer = ByteBuffer.wrap(rgb_data); byteBuffer.position(0); VideoBit.copyPixelsFromBuffer(byteBuffer); Matrix matrix = new Matrix(); matrix.postRotate(90); baos = new ByteArrayOutputStream(); VideoBit.compress(Bitmap.CompressFormat.JPEG,50,baos); byte []bytes = baos.toByteArray(); // imageView.setImageBitmap(Bitmap.createBitmap(BitmapFactory.decodeByteArray(bytes,0,bytes.length),0,0,width,height,matrix,true)); try{ number = bytes.length; out.writeInt(number); out.flush(); out.write(bytes); out.flush(); }catch (IOException e){ e.printStackTrace(); } } } /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); SurfaceView mSurfaceView = (SurfaceView) this.findViewById(R.id.camera_preview); button1 = (Button) findViewById(R.id.b1); button2 = (Button) findViewById(R.id.b2); holder = mSurfaceView.getHolder(); imageView = (ImageView)findViewById(R.id.imageView); new MyThread().start(); button1.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View v) { if(mCamera == null) { mCamera = Camera.open(); Camera.Parameters p = mCamera.getParameters(); p.setPreviewFormat(PixelFormat.YCbCr_420_SP); p.setPreviewSize(width,height); p.setPreviewFrameRate(15); //设置帧率 mCamera.setParameters(p); mCamera.setDisplayOrientation(90); try { mCamera.setPreviewDisplay(holder); } catch (IOException e) { e.printStackTrace(); } mCamera.startPreview(); Callback a = new Callback(); mCamera.setPreviewCallback(a); } } }); button2.setOnClickListener(new Button.OnClickListener(){ @Override public void onClick(View v) { finish(); } }); holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); } @Override public void finalize() { try { super.finalize(); } catch (Throwable e) { e.printStackTrace(); } } public class MyThread extends Thread{ public void run(){ try{ server = new ServerSocket(PORT); socket = server.accept(); out = new DataOutputStream(socket.getOutputStream()); }catch (IOException e){ e.printStackTrace(); } } } static public void decodeYUV420SP(byte[] rgb, byte[] yuv420sp, int width, int height) { final int frameSize = width * height; for (int j = 0, yp = 0; j < height; j++) { int uvp = frameSize + (j >> 1) * width, u = 0, v = 0; for (int i = 0; i < width; i++, yp++) { int y = (0xff & ((int) yuv420sp[yp])) - 16; if (y < 0) y = 0; if ((i & 1) == 0) { v = (0xff & yuv420sp[uvp++]) - 128; u = (0xff & yuv420sp[uvp++]) - 128; } int y1192 = 1192 * y; int r = (y1192 + 1634 * v); int g = (y1192 - 833 * v - 400 * u); int b = (y1192 + 2066 * u); if (r < 0) r = 0; else if (r > 262143) r = 262143; if (g < 0) g = 0; else if (g > 262143) g = 262143; if (b < 0) b = 0; else if (b > 262143) b = 262143; rgb[yp*4] = (byte)(r >>10); rgb[yp*4+1] = (byte)(g >>10); rgb[yp*4+2] = (byte)(b >> 10); rgb[yp*4+3] = (byte)255; } } } } <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent" > <TextView android:layout_width="match_parent" android:layout_height="wrap_content" android:textSize="50px" android:text="图像采集测试" android:gravity="center" /> <SurfaceView android:id="@+id/camera_preview" android:layout_width="480px" android:layout_height="640px" > </SurfaceView> <LinearLayout android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="wrap_content" > <Button android:id="@+id/b1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="30px" android:text="采集" android:gravity="center" /> <Button android:id="@+id/b2" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="30px" android:text="退出" android:gravity="center" /> </LinearLayout> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" app:srcCompat="@mipmap/ic_launcher" android:id="@+id/imageView" /> </LinearLayout> <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.administrator.compress"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.CAMERA"/> </manifest> Client package com.example.ict.video_frame_client; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Matrix; import android.os.Handler; import android.os.Message; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.Window; import android.view.WindowManager; import android.widget.ImageView; import java.io.DataInputStream; import java.io.DataOutputStream; import java.io.IOException; import java.net.Socket; import java.nio.ByteBuffer; public class MainActivity extends AppCompatActivity { private static final String HOST = "192.168.43.1"; private static final int PORT = 5555; private static final int REFRESH = 0x000001; Socket socket = null; DataOutputStream out = null; DataInputStream in = null; Handler mHandler = null; private static final int width = 640; private static final int height = 480; // int size = width*height*3/2; int size = 0; // byte r_data[] = new byte[size]; byte r_data[] = null; private byte rgb_data[] = new byte[width*height*4]; private Bitmap VideoBit = null; private ByteBuffer byteBuffer = null; ImageView imageView = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); //设置窗口无标题显示 getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.activity_main); imageView = (ImageView)findViewById(R.id.imageView); new MyThread().start(); mHandler = new Handler(){ @Override public void handleMessage(Message msg){ if(msg.what == REFRESH){ Matrix matrix = new Matrix(); matrix.postRotate(90); imageView.setImageBitmap(Bitmap.createBitmap(BitmapFactory.decodeByteArray(r_data,0,r_data.length),0,0,width,height,matrix,true)); /* decodeYUV420SP(rgb_data,r_data,width,height); VideoBit = Bitmap.createBitmap(width,height,Bitmap.Config.ARGB_8888); byteBuffer = ByteBuffer.wrap(rgb_data); byteBuffer.position(0); VideoBit.copyPixelsFromBuffer(byteBuffer); Matrix matrix = new Matrix(); matrix.postRotate(90); imageView.setImageBitmap(Bitmap.createBitmap(VideoBit, 0, 0, width, height, matrix, true));*/ } } }; } public class MyThread extends Thread{ public void run(){ try { socket = new Socket(HOST,PORT); in = new DataInputStream(socket.getInputStream()); out = new DataOutputStream(socket.getOutputStream()); // out.writeBytes("Hello Server!"); }catch (IOException e){ e.printStackTrace(); } while(!Thread.currentThread().isInterrupted()){ Message msg = new Message(); msg.what = REFRESH; int len = 0; try{ size = in.readInt(); r_data = new byte[size]; while(len<size) len += in.read(r_data,len,size-len); }catch (IOException e){ e.printStackTrace(); } mHandler.sendMessage(msg); try{ Thread.sleep(50); }catch (InterruptedException e){ e.printStackTrace(); } } } } static public void decodeYUV420SP(byte[] rgb, byte[] yuv420sp, int width, int height) { final int frameSize = width * height; for (int j = 0, yp = 0; j < height; j++) { int uvp = frameSize + (j >> 1) * width, u = 0, v = 0; for (int i = 0; i < width; i++, yp++) { int y = (0xff & ((int) yuv420sp[yp])) - 16; if (y < 0) y = 0; if ((i & 1) == 0) { v = (0xff & yuv420sp[uvp++]) - 128; u = (0xff & yuv420sp[uvp++]) - 128; } int y1192 = 1192 * y; int r = (y1192 + 1634 * v); int g = (y1192 - 833 * v - 400 * u); int b = (y1192 + 2066 * u); if (r < 0) r = 0; else if (r > 262143) r = 262143; if (g < 0) g = 0; else if (g > 262143) g = 262143; if (b < 0) b = 0; else if (b > 262143) b = 262143; rgb[yp*4] = (byte)(r >>10); rgb[yp*4+1] = (byte)(g >>10); rgb[yp*4+2] = (byte)(b >> 10); rgb[yp*4+3] = (byte)255; } } } } <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/activity_main" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.example.ict.video_frame_client.MainActivity"> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" app:srcCompat="@mipmap/ic_launcher" android:id="@+id/imageView" /> </LinearLayout> <?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.ict.video_frame_client"> <application android:allowBackup="true" android:icon="@mipmap/ic_launcher" android:label="@string/app_name" android:supportsRtl="true" android:theme="@style/AppTheme"> <activity android:name=".MainActivity"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-permission android:name="android.permission.INTERNET"/> </manifest>