Android基於fms的視屏通訊咋做

package net.john.activity;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.lang.reflect.Array;
import java.util.Map;

import net.john.R;
import net.john.util.RTMPConnectionUtil;
import net.john.util.RemoteUtil;
import net.john.util.UltraNetStream;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;

import android.hardware.Camera;
import android.hardware.Camera.CameraInfo;
import android.os.Build;
import android.os.Bundle;
import android.provider.MediaStore;
import android.util.Log;
import android.view.KeyEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.Window;

import com.shouyanwang.h264encoder;
import com.smaxe.io.ByteArray;
import com.smaxe.uv.client.INetStream;
import com.smaxe.uv.client.NetStream;
import com.smaxe.uv.client.camera.AbstractCamera;
import com.smaxe.uv.stream.support.MediaDataByteArray;

public class VideoActivity extends Activity{
 
 final String TAG = "VideoActivity";
 
 private boolean active;
 public static AndroidCamera aCamera;
 
 private h264encoder mH264encoder;
 private long handle;
 private Context context;
 
 @Override
 public void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  
  this.requestWindowFeature(Window.FEATURE_NO_TITLE);
  setContentView(R.layout.layout_chat);
  context=this;
  mH264encoder = new h264encoder();
  aCamera = new AndroidCamera(VideoActivity.this);
//  
//  if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {
//  for(int i=0; Camera.getNumberOfCameras();i++){
//   
//   CameraInfo cameraInfo=new CameraInfo();
//   Camera.getCameraInfo(i, cameraInfo);
//   if(cameraInfo.facing==CameraInfo.CAMERA_FACING_FRONT){
//   
//   }
//  }
  new Thread(){
   @Override
   public void run() {
    AndroidCamera androidCamera=new AndroidCamera(VideoActivity.this);
    androidCamera.startVideo();
    
   }
  };

  
  active = true;
 }
 
 @Override
 public boolean onKeyDown(int keyCode, KeyEvent event) {
  
  if (keyCode == KeyEvent.KEYCODE_BACK) {
   new AlertDialog.Builder(VideoActivity.this)
   .setMessage(R.string.dialog_exit)
   .setPositiveButton(R.string.dialog_ok, new DialogInterface.OnClickListener() {
    
    @Override
    public void onClick(DialogInterface dialog, int which) {
     // TODO Auto-generated method stub
     active = false;
     finish();
    }
   })
   .setNegativeButton(R.string.dialog_cancel, new DialogInterface.OnClickListener() {
    
    @Override
    public void onClick(DialogInterface dialog, int which) {
     // TODO Auto-generated method stub
     dialog.dismiss();
    }
   }).show();
   return true;
  } else {
   return super.onKeyDown(keyCode, event);
  }
 }
 
 @Override
 public void onStop() {
  super.onStop();
  aCamera = null;
  if (RTMPConnectionUtil.netStream != null) {
   RTMPConnectionUtil.netStream.close();
  }
  
  Log.d("DEBUG", "onStop");
 }
 
 @Override
 public void onDestroy() {
  super.onDestroy();
  
  Log.d("DEBUG", "onDestroy()");
 }
 
 //
 public class AndroidCamera extends AbstractCamera implements SurfaceHolder.Callback, Camera.PreviewCallback {
  
  private static final int PICK_FROM_CAMERA = 0;
  private SurfaceView surfaceView;
  private SurfaceHolder surfaceHolder;
  private Camera camera;
  
  private int width;
  private int height;
  
  private boolean init;
  
  int blockWidth;
        int blockHeight;
        int timeBetweenFrames; // 1000 / frameRate
        int frameCounter;
        byte[] previous;
  
  public AndroidCamera(Context context) {
         
         
         surfaceView = (SurfaceView)((Activity) context).findViewById(R.id.surfaceView);
   surfaceHolder = surfaceView.getHolder();
   surfaceHolder.addCallback(AndroidCamera.this);
   surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
   
   width = 352;
   height = 288;
   
   handle = mH264encoder.initEncoder(width, height);
   
   init = false;
   Log.d("DEBUG", "AndroidCamera()");
  }
  
  private  void startVideo() {
   Log.d("DEBUG", "startVideo()");
   //連線服務端
   
   RTMPConnectionUtil.netStream = new UltraNetStream(RTMPConnectionUtil.connection);
   
   RTMPConnectionUtil.netStream.addEventListener(new NetStream.ListenerAdapter() {
   
    @Override
             public void onNetStatus(final INetStream source, final Map<String, Object> info){
                 Log.d("DEBUG", "Publisher#NetStream#onNetStatus: " + info);
                 
                 final Object code = info.get("code");
                 
                 if (NetStream.PUBLISH_START.equals(code)) {
                     if (VideoActivity.aCamera != null) {
                      RTMPConnectionUtil.netStream.attachCamera(aCamera, -1 );
                     
                      
                         Log.d("DEBUG", "aCamera.start()");
                         aCamera.start();
                     } else {
                      Log.d("DEBUG", "camera == null");
                     }
                 }    
             }
   });
   
   
   
   
   RTMPConnectionUtil.netStream.publish("aaa", NetStream.RECORD);
  }
  
  public void start() {
   System.out.println("start");
   
   camera.startPreview();
  }
  
  public void printHexString(byte[] b) { 
   
   System.out.println("printHexString");
   
   for (int i = 0; i < b.length; i++) { 
    String hex = Integer.toHexString(b[i] & 0xFF); 
    if (hex.length() == 1) { 
    hex = '0' + hex; 
   } 
    Log.i(TAG, "陣列16進位制內容:"+hex.toUpperCase());
   } 
 }
  
  @Override
  public void onPreviewFrame(byte[] arg0, Camera arg1) {
   
   System.out.println("onPreviewFrame");
   // TODO Auto-generated method stub
   if (!active) return;
   if (!init) {
    blockWidth = 32;
          blockHeight = 32;
          timeBetweenFrames = 100; // 1000 / frameRate
          frameCounter = 0;
          previous = null;
    init = true;
   }
   final long ctime = System.currentTimeMillis();
   Log.i(TAG, "採集到的陣列的長度："+arg0.length);
   
            byte[] current = RemoteUtil.decodeYUV420SP2RGB(arg0, width, height);
            try {
              int byte_result = Decode(arg0);
           byte[] bytes1 = copyOf(out,byte_result);
           Log.i(TAG, "byte陣列的長度："+bytes1.length);
              
                final byte[] packet = RemoteUtil.encode(current, previous, blockWidth, blockHeight, width, height);
           fireOnVideoData(new MediaDataByteArray(timeBetweenFrames, new ByteArray(packet)));
                previous = current;
                if (++frameCounter % 10 == 0) previous = null;
                    
            }
            catch (Exception e) {
                e.printStackTrace();
            }
            final int spent = (int) (System.currentTimeMillis() - ctime);
            try {
             Log.i(TAG, "執行緒等待："+Math.max(0, timeBetweenFrames - spent)+" s");
    Thread.sleep(Math.max(0, timeBetweenFrames - spent));
   } catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
  }
  
  public byte[] copyOf(byte[] arr,int len)
  {
   System.out.println("copyOf");
   Class type=arr.getClass().getComponentType();
   byte[] target=(byte[])Array.newInstance(type, len);
   System.arraycopy(arr, 0, target, 0, len);
   return target;
  }
  
  private byte[] out = new byte[20*1024];
  long start = 0;
  long end = 0;
  private int Decode(byte[] yuvData){
   start = System.currentTimeMillis();
   int result = mH264encoder.encodeframe(handle, -1, yuvData, yuvData.length, out);
   end = System.currentTimeMillis();
   Log.e(TAG, "encode result:"+result+"--encode time:"+(end-start));
   if(result > 0){
    try {
     FileOutputStream file_out = new FileOutputStream ("/sdcard/x264_video_activity.264",true);
     file_out.write(out,0,result);
     file_out.close();
    } catch (FileNotFoundException e) {
     e.printStackTrace();
    } catch (IOException e) {
     e.printStackTrace();
    }
   }
//   this.setPrewDataGetHandler();
   return result;
  }
  
  @Override
  public void surfaceChanged(SurfaceHolder holder, int format, int width,
    int height) {
   // TODO Auto-generated method stub
   camera.startPreview();
   camera.unlock();
   new Thread(){
    @Override
    public void run() {
     AndroidCamera androidCamera=new AndroidCamera(context);
     androidCamera.startVideo();
     
    }
   };
   // startVideo();
   Log.d("DEBUG", "surfaceChanged()");
  }

  
  @Override
  public void surfaceCreated(SurfaceHolder holder) {
   // TODO Auto-generated method stub
   //拍照功能
//   Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);  
//          
//   intent.putExtra("camerasensortype", 1); // 呼叫前置攝像頭  
//   intent.putExtra("autofocus", true); // 自動對焦  
//   intent.putExtra("fullScreen", false); // 全屏  
//   intent.putExtra("showActionIcons", false);  
//     
//   startActivityForResult(intent, PICK_FROM_CAMERA);

  
   camera = Camera.open();
   if(camera!=null){
    try {
     
     camera.setPreviewDisplay(surfaceHolder);
     camera.setPreviewCallback(this);
     Camera.Parameters params = camera.getParameters();
     params.setPreviewSize(width, height);
     camera.setParameters(params);
    } catch (IOException e) {
     // TODO Auto-generated catch block
     e.printStackTrace();
     camera.release();
     camera = null;
    }
    
   }else{
    
    System.out.println("no！");
   }
   
   Log.d("DEBUG", "surfaceCreated()");
  }

  @Override
  public void surfaceDestroyed(SurfaceHolder holder) {
   // TODO Auto-generated method stub
   if (camera != null) {
    camera.stopPreview();
   camera.release();
    camera = null;
   }
   mH264encoder.destory(handle);
   Log.d("DEBUG", "surfaceDestroy()");
  }
  
 } //AndroidCamera
}

原文連結：http://www.apkbus.com/blog-644484-59039.html