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我是新來的Android編程和發現自己被困我一直在研究各種方式從手機傳輸實時視頻電話，似乎有它主要的功能，除了當然的了最重要的部分：播放流。它似乎是從一部手機發送流，但第二部手機無法播放流。流實時視頻電話使用套接字fd
這裏是打邊
public class VideoPlayback extends Activity implements Callback {
MediaPlayer mp;
private SurfaceView mPreview;
private SurfaceHolder holder;
private TextView mTextview;
public static final int SERVERPORT = 6775;
public static String SERVERIP="192.168.1.126";
Socket clientSocket;
private Handler handler = new Handler();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mPreview = (SurfaceView) findViewById(R.id.surfaceView1);
mTextview = (TextView) findViewById(R.id.textView1);
holder = mPreview.getHolder();
holder.addCallback(this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
mTextview.setText("Attempting to connect");
mp = new MediaPlayer();
Thread t = new Thread(){
public void run(){
try {
clientSocket = new Socket(SERVERIP,SERVERPORT);
handler.post(new Runnable() {
@Override
public void run() {
mTextview.setText("Connected to server");
}
});
handler.post(new Runnable() {
@Override
public void run() {
try {
ParcelFileDescriptor pfd = ParcelFileDescriptor.fromSocket(clientSocket);
pfd.getFileDescriptor().sync();
mp.setDataSource(pfd.getFileDescriptor());
pfd.close();
mp.setDisplay(holder);
mp.prepareAsync();
mp.start();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
};
t.start();
}
的代碼，這裏是流側
public class VideoStreaming extends Activity{
// User Interface Elements
VideoView mView;
TextView connectionStatus;
SurfaceHolder mHolder;
// Video variable
MediaRecorder recorder;
// Networking variables
public static String SERVERIP="";
public static final int SERVERPORT = 6775;
private Handler handler = new Handler();
private ServerSocket serverSocket;
/** Called when the activity is first created. */
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Define UI elements
mView = (VideoView) findViewById(R.id.video_preview);
connectionStatus = (TextView) findViewById(R.id.connection_status_textview);
mHolder = mView.getHolder();
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
SERVERIP = "192.168.1.126";
// Run new thread to handle socket communications
Thread sendVideo = new Thread(new SendVideoThread());
sendVideo.start();
}
public class SendVideoThread implements Runnable{
public void run(){
// From Server.java
try {
if(SERVERIP!=null){
handler.post(new Runnable() {
@Override
public void run() {
connectionStatus.setText("Listening on IP: " + SERVERIP);
}
});
serverSocket = new ServerSocket(SERVERPORT);
while(true) {
//listen for incoming clients
Socket client = serverSocket.accept();
handler.post(new Runnable(){
@Override
public void run(){
connectionStatus.setText("Connected.");
}
});
try{
// Begin video communication
final ParcelFileDescriptor pfd = ParcelFileDescriptor.fromSocket(client);
handler.post(new Runnable(){
@Override
public void run(){
recorder = new MediaRecorder();
recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setOutputFile(pfd.getFileDescriptor());
recorder.setVideoFrameRate(20);
recorder.setVideoSize(176,144);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
recorder.setPreviewDisplay(mHolder.getSurface());
try {
recorder.prepare();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
recorder.start();
}
});
} catch (Exception e) {
handler.post(new Runnable(){
@Override
public void run(){
connectionStatus.setText("Oops.Connection interrupted. Please reconnect your phones.");
}
});
e.printStackTrace();
}
}
} else {
handler.post(new Runnable() {
@Override
public void run(){
connectionStatus.setText("Couldn't detect internet connection.");
}
});
}
} catch (Exception e){
handler.post(new Runnable() {
@Override
public void run() {
connectionStatus.setText("Error");
}
});
e.printStackTrace();
}
// End from server.java
}
}
我試圖創建的MediaPlayer
05-24 16:25:39.360: ERROR/MediaPlayerService(88): offset error
05-24 16:25:39.360: ERROR/MediaPlayer(11895): Unable to to create media player
05-24 16:25:39.360: WARN/System.err(11895): java.io.IOException: setDataSourceFD failed.: status=0x80000000
05-24 16:25:39.360: WARN/System.err(11895): at android.media.MediaPlayer.setDataSource(Native Method)
05-24 16:25:39.360: WARN/System.err(11895): at android.media.MediaPlayer.setDataSource(MediaPlayer.java:811)
05-24 16:25:39.360: WARN/System.err(11895): at com.conti.VideoPlayBack.VideoPlayback$1$2.run(VideoPlayback.java:63)
05-24 16:25:39.360: WARN/System.err(11895): at android.os.Handler.handleCallback(Handler.java:587)
05-24 16:25:39.360: WARN/System.err(11895): at android.os.Handler.dispatchMessage(Handler.java:92)
05-24 16:25:39.360: WARN/System.err(11895): at android.os.Looper.loop(Looper.java:132)
05-24 16:25:39.360: WARN/System.err(11895): at android.app.ActivityThread.main(ActivityThread.java:4025)
05-24 16:25:39.360: WARN/System.err(11895): at java.lang.reflect.Method.invokeNative(Native Method)
05-24 16:25:39.360: WARN/System.err(11895): at java.lang.reflect.Method.invoke(Method.java:491)
05-24 16:25:39.360: WARN/System.err(11895): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841)
05-24 16:25:39.360: WARN/System.err(11895): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599)
05-24 16:25:39.360: WARN/System.err(11895): at dalvik.system.NativeStart.main(Native Method)
沒有人對此有一個解決？提前致謝！
你得到它的工作？ – B770 2013-08-19 09:36:56
是爲你工作嗎？如果它正在工作，請告訴我如何解決這個問題。 – Aravi 2013-12-10 08:18:19
關於這個問題有幾個問題，都以同樣的方式結束，有人說它應該是可能的，但沒有真正的答案，沒有工作代碼的例子，它非常令人沮喪。 – steveh 2014-07-06 01:06:28