Program: 110349
Project: 110349
Buggy source:
private void initializePlayer(){
  Intent intent=getIntent();
  if (player == null) {
    boolean preferExtensionDecoders=intent.getBooleanExtra(PREFER_EXTENSION_DECODERS,false);
    UUID drmSchemeUuid=intent.hasExtra(DRM_SCHEME_UUID_EXTRA) ? UUID.fromString(intent.getStringExtra(DRM_SCHEME_UUID_EXTRA)) : null;
    DrmSessionManager drmSessionManager=null;
    if (drmSchemeUuid != null) {
      String drmLicenseUrl=intent.getStringExtra(DRM_LICENSE_URL);
      try {
        drmSessionManager=buildDrmSessionManager(drmSchemeUuid,drmLicenseUrl);
      }
 catch (      UnsupportedDrmException e) {
        int errorStringId=Util.SDK_INT < 18 ? R.string.error_drm_not_supported : (e.reason == UnsupportedDrmException.REASON_UNSUPPORTED_SCHEME ? R.string.error_drm_unsupported_scheme : R.string.error_drm_unknown);
        showToast(errorStringId);
        return;
      }
    }
    eventLogger=new EventLogger();
    TrackSelection.Factory videoTrackSelectionFactory=new AdaptiveVideoTrackSelection.Factory(BANDWIDTH_METER);
    trackSelector=new DefaultTrackSelector(mainHandler,videoTrackSelectionFactory);
    trackSelector.addListener(this);
    trackSelector.addListener(eventLogger);
    trackSelectionHelper=new TrackSelectionHelper(trackSelector,videoTrackSelectionFactory);
    player=ExoPlayerFactory.newSimpleInstance(this,trackSelector,new DefaultLoadControl(),drmSessionManager,preferExtensionDecoders);
    player.addListener(this);
    player.addListener(eventLogger);
    player.setDebugListener(eventLogger);
    player.setId3Output(eventLogger);
    player.setTextOutput(subtitleView);
    player.setVideoListener(this);
    player.setVideoSurfaceHolder(surfaceView.getHolder());
    if (shouldRestorePosition) {
      player.seekInPeriod(playerPeriodIndex,playerPosition);
    }
    player.setPlayWhenReady(true);
    mediaController.setMediaPlayer(new PlayerControl(player));
    mediaController.setPrevNextListeners(new MediaControllerPrevNextClickListener(player,true),new MediaControllerPrevNextClickListener(player,false));
    mediaController.setAnchorView(rootView);
    debugViewHelper=new DebugTextViewHelper(player,debugTextView);
    debugViewHelper.start();
    playerNeedsSource=true;
  }
  if (playerNeedsSource) {
    String action=intent.getAction();
    Uri[] uris;
    String[] extensions;
    if (ACTION_VIEW.equals(action)) {
      uris=new Uri[]{intent.getData()};
      extensions=new String[]{intent.getStringExtra(EXTENSION_EXTRA)};
    }
 else     if (ACTION_VIEW_LIST.equals(action)) {
      String[] uriStrings=intent.getStringArrayExtra(URI_LIST_EXTRA);
      uris=new Uri[uriStrings.length];
      for (int i=0; i < uriStrings.length; i++) {
        uris[i]=Uri.parse(uriStrings[i]);
      }
      extensions=intent.getStringArrayExtra(EXTENSION_LIST_EXTRA);
      if (extensions == null) {
        extensions=new String[uriStrings.length];
      }
    }
 else {
      showToast(getString(R.string.unexpected_intent_action,action));
      return;
    }
    if (Util.maybeRequestReadExternalStoragePermission(this,uris)) {
      return;
    }
    MediaSource[] mediaSources=new MediaSource[uris.length];
    for (int i=0; i < uris.length; i++) {
      mediaSources[i]=buildMediaSource(uris[i],extensions[i]);
    }
    MediaSource mediaSource=mediaSources.length == 1 ? mediaSources[0] : new ConcatenatingMediaSource(mediaSources);
    player.setMediaSource(mediaSource,!shouldRestorePosition);
    playerNeedsSource=false;
    updateButtonVisibilities();
  }
}

Fixed version (ground truth):
private void initializePlayer(){
  Intent intent=getIntent();
  if (player == null) {
    boolean preferExtensionDecoders=intent.getBooleanExtra(PREFER_EXTENSION_DECODERS,false);
    UUID drmSchemeUuid=intent.hasExtra(DRM_SCHEME_UUID_EXTRA) ? UUID.fromString(intent.getStringExtra(DRM_SCHEME_UUID_EXTRA)) : null;
    DrmSessionManager drmSessionManager=null;
    if (drmSchemeUuid != null) {
      String drmLicenseUrl=intent.getStringExtra(DRM_LICENSE_URL);
      try {
        drmSessionManager=buildDrmSessionManager(drmSchemeUuid,drmLicenseUrl);
      }
 catch (      UnsupportedDrmException e) {
        int errorStringId=Util.SDK_INT < 18 ? R.string.error_drm_not_supported : (e.reason == UnsupportedDrmException.REASON_UNSUPPORTED_SCHEME ? R.string.error_drm_unsupported_scheme : R.string.error_drm_unknown);
        showToast(errorStringId);
        return;
      }
    }
    eventLogger=new EventLogger();
    TrackSelection.Factory videoTrackSelectionFactory=new AdaptiveVideoTrackSelection.Factory(BANDWIDTH_METER);
    trackSelector=new DefaultTrackSelector(mainHandler,videoTrackSelectionFactory);
    trackSelector.addListener(this);
    trackSelector.addListener(eventLogger);
    trackSelectionHelper=new TrackSelectionHelper(trackSelector,videoTrackSelectionFactory);
    player=ExoPlayerFactory.newSimpleInstance(this,trackSelector,new DefaultLoadControl(),drmSessionManager,preferExtensionDecoders);
    player.addListener(this);
    player.addListener(eventLogger);
    player.setDebugListener(eventLogger);
    player.setId3Output(eventLogger);
    player.setTextOutput(subtitleView);
    player.setVideoListener(this);
    player.setVideoSurfaceHolder(surfaceView.getHolder());
    if (shouldRestorePosition) {
      if (playerPosition == -1) {
        player.seekToDefaultPositionForPeriod(playerPeriod);
      }
 else {
        player.seekInPeriod(playerPeriod,playerPosition);
      }
    }
    player.setPlayWhenReady(true);
    mediaController.setMediaPlayer(new PlayerControl(player));
    mediaController.setPrevNextListeners(new MediaControllerPrevNextClickListener(player,true),new MediaControllerPrevNextClickListener(player,false));
    mediaController.setAnchorView(rootView);
    debugViewHelper=new DebugTextViewHelper(player,debugTextView);
    debugViewHelper.start();
    playerNeedsSource=true;
  }
  if (playerNeedsSource) {
    String action=intent.getAction();
    Uri[] uris;
    String[] extensions;
    if (ACTION_VIEW.equals(action)) {
      uris=new Uri[]{intent.getData()};
      extensions=new String[]{intent.getStringExtra(EXTENSION_EXTRA)};
    }
 else     if (ACTION_VIEW_LIST.equals(action)) {
      String[] uriStrings=intent.getStringArrayExtra(URI_LIST_EXTRA);
      uris=new Uri[uriStrings.length];
      for (int i=0; i < uriStrings.length; i++) {
        uris[i]=Uri.parse(uriStrings[i]);
      }
      extensions=intent.getStringArrayExtra(EXTENSION_LIST_EXTRA);
      if (extensions == null) {
        extensions=new String[uriStrings.length];
      }
    }
 else {
      showToast(getString(R.string.unexpected_intent_action,action));
      return;
    }
    if (Util.maybeRequestReadExternalStoragePermission(this,uris)) {
      return;
    }
    MediaSource[] mediaSources=new MediaSource[uris.length];
    for (int i=0; i < uris.length; i++) {
      mediaSources[i]=buildMediaSource(uris[i],extensions[i]);
    }
    MediaSource mediaSource=mediaSources.length == 1 ? mediaSources[0] : new ConcatenatingMediaSource(mediaSources);
    player.setMediaSource(mediaSource,!shouldRestorePosition);
    playerNeedsSource=false;
    updateButtonVisibilities();
  }
}