AndroidのMediaPlayerでライブHTTPオーディオストリームを再生するにはどうすればよいですか？

Question

私はAndroidアプリでライブHTTPストリームを再生したいので、Windows Media Encoder 9を同じLAN上の別のPCにインストールし、ライブのHTTPオーディオストリームを作成するために使用しました。

ライブHTTPストリームは問題ありません：テストしたところ、Windows Media PlayerまたはVLCでPCで再生でき、モバイル用のVLCで再生できます。

だから、私のAndroidアプリでは、私はこのコードを書いた：

private MediaPlayer player = null; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder() 
      .detectDiskReads() 
      .detectDiskWrites() 
      .detectNetwork() // or .detectAll() for all detectable problems 
      .penaltyLog() 
      .build()); 
    StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder() 
      .detectLeakedSqlLiteObjects() 
      //.detectLeakedClosableObjects() 
      .penaltyLog() 
      .penaltyDeath() 
      .build()); 

    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    btnPlay = (Button)findViewById(R.id.play); 
    address = (TextView)findViewById(R.id.address); 

    btnPlay.setOnClickListener(new OnClickListener() { 
     public void onClick(View v) { 
      play(); 
     } 
    }); 

} 

private void play() 
{ 
    String serverIp; 

    serverIp = address.getText().toString(); // get the uri address, for example http://xxx.xxx.xxx.xxx:2340 

    if (player == null) 
    { 
     player = new MediaPlayer(); 
    } 
    else 
    { 
     player.stop(); 
     player.reset(); 
    } 
    try { 
     Log.v("", "Init a new MediaPlayer"); 

     player.setAudioStreamType(AudioManager.STREAM_MUSIC); 
     Log.v("", "Set the stream type to STREAM_MUSIC"); 

     player.setDataSource(this, Uri.parse(serverIp)); 
     Log.v("", "Set the source is " + serverIp); 

     player.setOnBufferingUpdateListener(this); 
     player.setOnPreparedListener(this); 
     player.setOnErrorListener(this); 

     player.prepareAsync(); 
     Log.v("", "After prepareAsync"); 
    } catch (IllegalArgumentException e) { 
     // TODO Auto-generated catch block 
     Log.v("IllegalArgumentException", e.toString()); 
    } catch (SecurityException e) { 
     // TODO Auto-generated catch block 
     Log.v("SecurityException", e.toString()); 
    } catch (IllegalStateException e) { 
     // TODO Auto-generated catch block 
     Log.v("IllegalStateException", e.toString()); 
    } catch (IOException e) { 
     // TODO Auto-generated catch block 
     Log.v("IOException", e.toString()); 
    } catch (Exception e) { 
     Log.v("Exception",e.toString()); 
    } 

} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    getMenuInflater().inflate(R.menu.activity_main, menu); 
    return true; 
} 


@Override 
public void onPrepared(MediaPlayer mp) { 
    // TODO Auto-generated method stub 
    try { 
     Log.v("onPrepared", "After prepareAsync"); 
     mp.start(); 
    } 
    catch (Exception e) { 
     Log.v("play", e.toString()); 
    } 
} 

@Override 
public void onBufferingUpdate(MediaPlayer mp, int percent) { 
    // TODO Auto-generated method stub 
    Log.v("onBufferingUpdate", "Buffering Update"); 
} 

@Override 
public boolean onError(MediaPlayer mp, int what, int extra) { 
    // TODO Auto-generated method stub 
    Log.v("MediaPlayer onError", "what=" + what + " extra=" + extra); 

    return true; 
} 

をしかし、それは動作しませんでした。再生ボタンをクリックすると何も起こりません。しかし、私がインターネット上に見つけた他のURL（例えば、http://www.example.com/song.mp3）を入力すれば、それは動作します。

だから誰でも助けてくれますか？ログ情報は以下の通りです。私の携帯はHTC s710e、Androidバージョンは4.0.4です。

11-20 22:28:14.137: V/(580): Init a new MediaPlayer 
11-20 22:28:14.137: V/(580): Set the stream type tp STREAM_MUSIC 
11-20 22:28:14.147: D/MediaPlayer(580): Couldn't open file on client side, trying server side 
11-20 22:28:14.178: E/Trace(39): error opening trace file: No such file or directory (2) 
11-20 22:28:14.178: V/(580): After prepareAsync 
11-20 22:28:14.297: V/ChromiumHTTPDataSource(39): connect on behalf of uid 10044 
11-20 22:28:14.339: I/qtaguid(39): Tagging socket 27 with tag 3f500000000(1013) for uid 10044 failed errno=-2 
11-20 22:28:14.629: I/ChromiumHTTPDataSourceSupport(39): Server responded with http status 400 
11-20 22:28:14.648: I/qtaguid(39): Untagging socket 27 failed errno=-2 
11-20 22:28:14.657: I/AwesomePlayer(39): mConnectingDataSource->connect() returned -1004 
11-20 22:28:14.657: E/MediaPlayer(580): error (1, -1004) 
11-20 22:28:14.667: E/MediaPlayer(580): Error (1,-1004) 
11-20 22:28:14.667: V/MediaPlayer onError(580): what=1 extra=-1004 

Answer 1

あなたはアンドロイド3.0と3.0 +バージョンでHLSをプレイできます。古いバージョンではHLSをサポートしていません。以下のこのコードは、3.0 +のバージョンで動作します。ビデオをすべてアンドロイド版で再生するには、rtspストリーミングまたはhttpプログレッシブダウンロードを使用する必要があります。

プレーヤークラス

import android.app.Activity; 
import android.media.MediaPlayer; 
import android.media.MediaPlayer.OnBufferingUpdateListener; 
import android.media.MediaPlayer.OnCompletionListener; 
import android.media.MediaPlayer.OnPreparedListener; 
import android.media.MediaPlayer.OnVideoSizeChangedListener; 
import android.os.Bundle; 
import android.util.Log; 
import android.view.SurfaceHolder; 
import android.view.SurfaceView; 


public class VideoPlayerActivity extends Activity implements 
     OnBufferingUpdateListener, OnCompletionListener, 
     OnPreparedListener, OnVideoSizeChangedListener, SurfaceHolder.Callback { 

    private static final String TAG = "MediaPlayerDemo"; 
    private int mVideoWidth; 
    private int mVideoHeight; 
    private MediaPlayer mMediaPlayer; 
    private SurfaceView mPreview; 
    private SurfaceHolder holder; 
    private String path; 
    private Bundle extras; 
    private static final String MEDIA = "media"; 
    private static final int STREAM_VIDEO = 5; 
    private boolean mIsVideoSizeKnown = false; 
    private boolean mIsVideoReadyToBePlayed = false; 

    /** 
    * 
    * Called when the activity is first created. 
    */ 
    @Override 
    public void onCreate(Bundle icicle) { 
     super.onCreate(icicle); 
     setContentView(R.layout.main); 
     mPreview = (SurfaceView) findViewById(R.id.VideoView); 
     holder = mPreview.getHolder(); 
     holder.addCallback(this); 
     holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
     extras = getIntent().getExtras(); 

    } 

    private void playVideo(Integer Media) { 
     doCleanUp(); 
     try { 

      path = "http://www.pocketjourney.com/downloads/pj/video/famous.3gp"; 


      // Create a new media player and set the listeners 
      mMediaPlayer = new MediaPlayer(); 
      mMediaPlayer.setDataSource(path); 
      mMediaPlayer.setDisplay(holder); 
      mMediaPlayer.prepare(); 
      mMediaPlayer.setOnBufferingUpdateListener(this); 
      mMediaPlayer.setOnCompletionListener(this); 
      mMediaPlayer.setOnPreparedListener(this); 
      mMediaPlayer.setOnVideoSizeChangedListener(this); 
      //mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); 


     } catch (Exception e) { 
      Log.e(TAG, "error: " + e.getMessage(), e); 
     } 
    } 

    public void onBufferingUpdate(MediaPlayer arg0, int percent) { 
     Log.d(TAG, "onBufferingUpdate percent:" + percent); 

    } 

    public void onCompletion(MediaPlayer arg0) { 
     Log.d(TAG, "onCompletion called"); 
    } 

    public void onVideoSizeChanged(MediaPlayer mp, int width, int height) { 
     Log.v(TAG, "onVideoSizeChanged called"); 
     if (width == 0 || height == 0) { 
      Log.e(TAG, "invalid video width(" + width + ") or height(" + height + ")"); 
      return; 
     } 
     mIsVideoSizeKnown = true; 
     mVideoWidth = width; 
     mVideoHeight = height; 
     if (mIsVideoReadyToBePlayed && mIsVideoSizeKnown) { 
      startVideoPlayback(); 
     } 
    } 

    public void onPrepared(MediaPlayer mediaplayer) { 
     Log.d(TAG, "onPrepared called"); 
     mIsVideoReadyToBePlayed = true; 
     if (mIsVideoReadyToBePlayed && mIsVideoSizeKnown) { 
      startVideoPlayback(); 
     } 
    } 

    public void surfaceChanged(SurfaceHolder surfaceholder, int i, int j, int k) { 
     Log.d(TAG, "surfaceChanged called"); 

    } 

    public void surfaceDestroyed(SurfaceHolder surfaceholder) { 
     Log.d(TAG, "surfaceDestroyed called"); 
    } 


    public void surfaceCreated(SurfaceHolder holder) { 
     Log.d(TAG, "surfaceCreated called"); 
     playVideo(STREAM_VIDEO); 


    } 

    @Override 
    protected void onPause() { 
     super.onPause(); 
     releaseMediaPlayer(); 
     doCleanUp(); 
    } 

    @Override 
    protected void onDestroy() { 
     super.onDestroy(); 
     releaseMediaPlayer(); 
     doCleanUp(); 
    } 

    private void releaseMediaPlayer() { 
     if (mMediaPlayer != null) { 
      mMediaPlayer.release(); 
      mMediaPlayer = null; 
     } 
    } 

    private void doCleanUp() { 
     mVideoWidth = 0; 
     mVideoHeight = 0; 
     mIsVideoReadyToBePlayed = false; 
     mIsVideoSizeKnown = false; 
    } 

    private void startVideoPlayback() { 
     Log.v(TAG, "startVideoPlayback"); 
     holder.setFixedSize(mVideoWidth, mVideoHeight); 
     mMediaPlayer.start(); 
    } 
} 

メインXML

<VideoView 
     android:id="@+id/VideoView" 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" android:layout_weight="1"/> 

    <LinearLayout 
     android:id="@+id/linearLayout1" 
     android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:orientation="vertical" android:layout_weight="1" android:background="#aaaaaa"> 
    </LinearLayout> 

</LinearLayout> 

そして、あなたはあなたのマニフェストのインターネット許可

uses-permission android:name="android.permission.INTERNET" />