com.google.android.exoplayer2.trackselection.MappingTrackSelector.MappedTrackInfo Java Examples

/**
 * Convenience method to add selections of tracks for all specified audio languages. If an audio
 * track in one of the specified languages is not available, the default fallback audio track is
 * used instead. Must not be called until after preparation completes.
 *
 * @param languages A list of audio languages for which tracks should be added to the download
 *     selection, as IETF BCP 47 conformant tags.
 */
public void addAudioLanguagesToSelection(String... languages) {
  assertPreparedWithMedia();
  for (int periodIndex = 0; periodIndex < mappedTrackInfos.length; periodIndex++) {
    DefaultTrackSelector.ParametersBuilder parametersBuilder =
        DEFAULT_TRACK_SELECTOR_PARAMETERS_WITHOUT_CONTEXT.buildUpon();
    MappedTrackInfo mappedTrackInfo = mappedTrackInfos[periodIndex];
    int rendererCount = mappedTrackInfo.getRendererCount();
    for (int rendererIndex = 0; rendererIndex < rendererCount; rendererIndex++) {
      if (mappedTrackInfo.getRendererType(rendererIndex) != C.TRACK_TYPE_AUDIO) {
        parametersBuilder.setRendererDisabled(rendererIndex, /* disabled= */ true);
      }
    }
    for (String language : languages) {
      parametersBuilder.setPreferredAudioLanguage(language);
      addTrackSelection(periodIndex, parametersBuilder.build());
    }
  }
}
 

/**
 * Convenience method to add selections of tracks for all specified text languages. Must not be
 * called until after preparation completes.
 *
 * @param selectUndeterminedTextLanguage Whether a text track with undetermined language should be
 *     selected for downloading if no track with one of the specified {@code languages} is
 *     available.
 * @param languages A list of text languages for which tracks should be added to the download
 *     selection, as IETF BCP 47 conformant tags.
 */
public void addTextLanguagesToSelection(
    boolean selectUndeterminedTextLanguage, String... languages) {
  assertPreparedWithMedia();
  for (int periodIndex = 0; periodIndex < mappedTrackInfos.length; periodIndex++) {
    DefaultTrackSelector.ParametersBuilder parametersBuilder =
        DEFAULT_TRACK_SELECTOR_PARAMETERS_WITHOUT_CONTEXT.buildUpon();
    MappedTrackInfo mappedTrackInfo = mappedTrackInfos[periodIndex];
    int rendererCount = mappedTrackInfo.getRendererCount();
    for (int rendererIndex = 0; rendererIndex < rendererCount; rendererIndex++) {
      if (mappedTrackInfo.getRendererType(rendererIndex) != C.TRACK_TYPE_TEXT) {
        parametersBuilder.setRendererDisabled(rendererIndex, /* disabled= */ true);
      }
    }
    parametersBuilder.setSelectUndeterminedTextLanguage(selectUndeterminedTextLanguage);
    for (String language : languages) {
      parametersBuilder.setPreferredTextLanguage(language);
      addTrackSelection(periodIndex, parametersBuilder.build());
    }
  }
}
 

/**
 * Convenience method to add selections of tracks for all specified text languages. Must not be
 * called until after preparation completes.
 *
 * @param selectUndeterminedTextLanguage Whether a text track with undetermined language should be
 *     selected for downloading if no track with one of the specified {@code languages} is
 *     available.
 * @param languages A list of text languages for which tracks should be added to the download
 *     selection, as IETF BCP 47 conformant tags.
 */
public void addTextLanguagesToSelection(
    boolean selectUndeterminedTextLanguage, String... languages) {
  assertPreparedWithMedia();
  for (int periodIndex = 0; periodIndex < mappedTrackInfos.length; periodIndex++) {
    DefaultTrackSelector.ParametersBuilder parametersBuilder =
        DEFAULT_TRACK_SELECTOR_PARAMETERS.buildUpon();
    MappedTrackInfo mappedTrackInfo = mappedTrackInfos[periodIndex];
    int rendererCount = mappedTrackInfo.getRendererCount();
    for (int rendererIndex = 0; rendererIndex < rendererCount; rendererIndex++) {
      if (mappedTrackInfo.getRendererType(rendererIndex) != C.TRACK_TYPE_TEXT) {
        parametersBuilder.setRendererDisabled(rendererIndex, /* disabled= */ true);
      }
    }
    parametersBuilder.setSelectUndeterminedTextLanguage(selectUndeterminedTextLanguage);
    for (String language : languages) {
      parametersBuilder.setPreferredTextLanguage(language);
      addTrackSelection(periodIndex, parametersBuilder.build());
    }
  }
}
 

@Override
    public void onClick(DialogInterface dialog, int which) {

        DefaultTrackSelector.ParametersBuilder parametersBuilder = DEFAULT_TRACK_SELECTOR_PARAMETERS.buildUpon();

        MappedTrackInfo mappedTrackInfo = this.trackInfo;

        int rendererCount = trackInfo.getRendererCount();
        for (int rendererIndex = 0; rendererIndex < rendererCount; rendererIndex++) {
            if (trackInfo.getRendererType(rendererIndex) != C.TRACK_TYPE_TEXT) {
                parametersBuilder.setRendererDisabled(rendererIndex, true);
            }
            if (override != null) {
                parametersBuilder.setSelectionOverride(rendererIndex, trackGroups, override);
            } else {
                parametersBuilder.clearSelectionOverrides(rendererIndex);
            }
        }
        // @TODO fix this
//    mappedTrackInfo.setParameters(parametersBuilder.build());

    }
 

@Override
@SuppressWarnings("ReferenceEquality")
public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
    if (trackGroups != lastSeenTrackGroupArray) {
        MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
        if (mappedTrackInfo != null) {
            if (mappedTrackInfo.getTrackTypeRendererSupport(C.TRACK_TYPE_VIDEO)
                    == MappedTrackInfo.RENDERER_SUPPORT_UNSUPPORTED_TRACKS) {
                showToast(R.string.error_unsupported_video);
            }
            if (mappedTrackInfo.getTrackTypeRendererSupport(C.TRACK_TYPE_AUDIO)
                    == MappedTrackInfo.RENDERER_SUPPORT_UNSUPPORTED_TRACKS) {
                showToast(R.string.error_unsupported_audio);
            }
        }
        lastSeenTrackGroupArray = trackGroups;
    }
}
 

/**
 * Convenience method to add selections of tracks for all specified audio languages. If an audio
 * track in one of the specified languages is not available, the default fallback audio track is
 * used instead. Must not be called until after preparation completes.
 *
 * @param languages A list of audio languages for which tracks should be added to the download
 *     selection, as IETF BCP 47 conformant tags.
 */
public void addAudioLanguagesToSelection(String... languages) {
  assertPreparedWithMedia();
  for (int periodIndex = 0; periodIndex < mappedTrackInfos.length; periodIndex++) {
    DefaultTrackSelector.ParametersBuilder parametersBuilder =
        DEFAULT_TRACK_SELECTOR_PARAMETERS.buildUpon();
    MappedTrackInfo mappedTrackInfo = mappedTrackInfos[periodIndex];
    int rendererCount = mappedTrackInfo.getRendererCount();
    for (int rendererIndex = 0; rendererIndex < rendererCount; rendererIndex++) {
      if (mappedTrackInfo.getRendererType(rendererIndex) != C.TRACK_TYPE_AUDIO) {
        parametersBuilder.setRendererDisabled(rendererIndex, /* disabled= */ true);
      }
    }
    for (String language : languages) {
      parametersBuilder.setPreferredAudioLanguage(language);
      addTrackSelection(periodIndex, parametersBuilder.build());
    }
  }
}
 

/**
 * Shows the selection dialog for a given renderer.
 *
 * @param activity The parent activity.
 * @param title The dialog's title.
 * @param trackInfo The current track information.
 * @param rendererIndex The index of the renderer.
 */
public void showSelectionDialog(Activity activity, CharSequence title, MappedTrackInfo trackInfo,
    int rendererIndex) {
  this.trackInfo = trackInfo;
  this.rendererIndex = rendererIndex;

  trackGroups = trackInfo.getTrackGroups(rendererIndex);
  trackGroupsAdaptive = new boolean[trackGroups.length];
  for (int i = 0; i < trackGroups.length; i++) {
    trackGroupsAdaptive[i] = adaptiveTrackSelectionFactory != null
        && trackInfo.getAdaptiveSupport(rendererIndex, i, false)
            != RendererCapabilities.ADAPTIVE_NOT_SUPPORTED
        && trackGroups.get(i).length > 1;
  }
  isDisabled = selector.getRendererDisabled(rendererIndex);
  override = selector.getSelectionOverride(rendererIndex, trackGroups);

  AlertDialog.Builder builder = new AlertDialog.Builder(activity);
  builder.setTitle(title)
      .setView(buildView(builder.getContext()))
      .setPositiveButton(android.R.string.ok, this)
      .setNegativeButton(android.R.string.cancel, null)
      .create()
      .show();
}
 

/**
 * Convenience method to add selections of tracks for all specified text languages. Must not be
 * called until after preparation completes.
 *
 * @param selectUndeterminedTextLanguage Whether a text track with undetermined language should be
 *     selected for downloading if no track with one of the specified {@code languages} is
 *     available.
 * @param languages A list of text languages for which tracks should be added to the download
 *     selection, as IETF BCP 47 conformant tags.
 */
public void addTextLanguagesToSelection(
    boolean selectUndeterminedTextLanguage, String... languages) {
  assertPreparedWithMedia();
  for (int periodIndex = 0; periodIndex < mappedTrackInfos.length; periodIndex++) {
    DefaultTrackSelector.ParametersBuilder parametersBuilder =
        DEFAULT_TRACK_SELECTOR_PARAMETERS.buildUpon();
    MappedTrackInfo mappedTrackInfo = mappedTrackInfos[periodIndex];
    int rendererCount = mappedTrackInfo.getRendererCount();
    for (int rendererIndex = 0; rendererIndex < rendererCount; rendererIndex++) {
      if (mappedTrackInfo.getRendererType(rendererIndex) != C.TRACK_TYPE_TEXT) {
        parametersBuilder.setRendererDisabled(rendererIndex, /* disabled= */ true);
      }
    }
    parametersBuilder.setSelectUndeterminedTextLanguage(selectUndeterminedTextLanguage);
    for (String language : languages) {
      parametersBuilder.setPreferredTextLanguage(language);
      addTrackSelection(periodIndex, parametersBuilder.build());
    }
  }
}
 

/**
 * Convenience method to add selections of tracks for all specified audio languages. If an audio
 * track in one of the specified languages is not available, the default fallback audio track is
 * used instead. Must not be called until after preparation completes.
 *
 * @param languages A list of audio languages for which tracks should be added to the download
 *     selection, as IETF BCP 47 conformant tags.
 */
public void addAudioLanguagesToSelection(String... languages) {
  assertPreparedWithMedia();
  for (int periodIndex = 0; periodIndex < mappedTrackInfos.length; periodIndex++) {
    DefaultTrackSelector.ParametersBuilder parametersBuilder =
        DEFAULT_TRACK_SELECTOR_PARAMETERS.buildUpon();
    MappedTrackInfo mappedTrackInfo = mappedTrackInfos[periodIndex];
    int rendererCount = mappedTrackInfo.getRendererCount();
    for (int rendererIndex = 0; rendererIndex < rendererCount; rendererIndex++) {
      if (mappedTrackInfo.getRendererType(rendererIndex) != C.TRACK_TYPE_AUDIO) {
        parametersBuilder.setRendererDisabled(rendererIndex, /* disabled= */ true);
      }
    }
    for (String language : languages) {
      parametersBuilder.setPreferredAudioLanguage(language);
      addTrackSelection(periodIndex, parametersBuilder.build());
    }
  }
}
 

/**
 * Shows the selection dialog for a given renderer.
 *
 * @param activity The parent activity.
 * @param title The dialog's title.
 * @param trackInfo The current track information.
 * @param rendererIndex The index of the renderer.
 */
public void showSelectionDialog(Activity activity, CharSequence title, MappedTrackInfo trackInfo,
    int rendererIndex) {
  this.trackInfo = trackInfo;
  this.rendererIndex = rendererIndex;

  trackGroups = trackInfo.getTrackGroups(rendererIndex);
  trackGroupsAdaptive = new boolean[trackGroups.length];
  for (int i = 0; i < trackGroups.length; i++) {
    trackGroupsAdaptive[i] = adaptiveVideoTrackSelectionFactory != null
        && trackInfo.getAdaptiveSupport(rendererIndex, i, false)
            != RendererCapabilities.ADAPTIVE_NOT_SUPPORTED
        && trackGroups.get(i).length > 1;
  }
  isDisabled = selector.getRendererDisabled(rendererIndex);
  override = selector.getSelectionOverride(rendererIndex, trackGroups);

  AlertDialog.Builder builder = new AlertDialog.Builder(activity);
  builder.setTitle(title)
      .setView(buildView(builder.getContext()))
      .setPositiveButton(android.R.string.ok, this)
      .setNegativeButton(android.R.string.cancel, null)
      .create()
      .show();
}
 

@SuppressWarnings("unchecked")
private void onMediaPrepared() {
  Assertions.checkNotNull(mediaPreparer);
  Assertions.checkNotNull(mediaPreparer.mediaPeriods);
  Assertions.checkNotNull(mediaPreparer.timeline);
  int periodCount = mediaPreparer.mediaPeriods.length;
  int rendererCount = rendererCapabilities.length;
  trackSelectionsByPeriodAndRenderer =
      (List<TrackSelection>[][]) new List<?>[periodCount][rendererCount];
  immutableTrackSelectionsByPeriodAndRenderer =
      (List<TrackSelection>[][]) new List<?>[periodCount][rendererCount];
  for (int i = 0; i < periodCount; i++) {
    for (int j = 0; j < rendererCount; j++) {
      trackSelectionsByPeriodAndRenderer[i][j] = new ArrayList<>();
      immutableTrackSelectionsByPeriodAndRenderer[i][j] =
          Collections.unmodifiableList(trackSelectionsByPeriodAndRenderer[i][j]);
    }
  }
  trackGroupArrays = new TrackGroupArray[periodCount];
  mappedTrackInfos = new MappedTrackInfo[periodCount];
  for (int i = 0; i < periodCount; i++) {
    trackGroupArrays[i] = mediaPreparer.mediaPeriods[i].getTrackGroups();
    TrackSelectorResult trackSelectorResult = runTrackSelection(/* periodIndex= */ i);
    trackSelector.onSelectionActivated(trackSelectorResult.info);
    mappedTrackInfos[i] = Assertions.checkNotNull(trackSelector.getCurrentMappedTrackInfo());
  }
  setPreparedWithMedia();
  Assertions.checkNotNull(callbackHandler)
      .post(() -> Assertions.checkNotNull(callback).onPrepared(this));
}
 

@SuppressWarnings("unchecked")
private void onMediaPrepared() {
  Assertions.checkNotNull(mediaPreparer);
  Assertions.checkNotNull(mediaPreparer.mediaPeriods);
  Assertions.checkNotNull(mediaPreparer.timeline);
  int periodCount = mediaPreparer.mediaPeriods.length;
  int rendererCount = rendererCapabilities.length;
  trackSelectionsByPeriodAndRenderer =
      (List<TrackSelection>[][]) new List<?>[periodCount][rendererCount];
  immutableTrackSelectionsByPeriodAndRenderer =
      (List<TrackSelection>[][]) new List<?>[periodCount][rendererCount];
  for (int i = 0; i < periodCount; i++) {
    for (int j = 0; j < rendererCount; j++) {
      trackSelectionsByPeriodAndRenderer[i][j] = new ArrayList<>();
      immutableTrackSelectionsByPeriodAndRenderer[i][j] =
          Collections.unmodifiableList(trackSelectionsByPeriodAndRenderer[i][j]);
    }
  }
  trackGroupArrays = new TrackGroupArray[periodCount];
  mappedTrackInfos = new MappedTrackInfo[periodCount];
  for (int i = 0; i < periodCount; i++) {
    trackGroupArrays[i] = mediaPreparer.mediaPeriods[i].getTrackGroups();
    TrackSelectorResult trackSelectorResult = runTrackSelection(/* periodIndex= */ i);
    trackSelector.onSelectionActivated(trackSelectorResult.info);
    mappedTrackInfos[i] = Assertions.checkNotNull(trackSelector.getCurrentMappedTrackInfo());
  }
  setPreparedWithMedia();
  Assertions.checkNotNull(callbackHandler)
      .post(() -> Assertions.checkNotNull(callback).onPrepared(this));
}
 

@Override
public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
  MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
  if (mappedTrackInfo != null) {
    if (mappedTrackInfo.getTrackTypeRendererSupport(C.TRACK_TYPE_VIDEO)
            == MappedTrackInfo.RENDERER_SUPPORT_UNSUPPORTED_TRACKS) {
      showToast(R.string.error_unsupported_video);
    }
    if (mappedTrackInfo.getTrackTypeRendererSupport(C.TRACK_TYPE_AUDIO)
            == MappedTrackInfo.RENDERER_SUPPORT_UNSUPPORTED_TRACKS) {
      showToast(R.string.error_unsupported_audio);
    }
  }
}
 

private void updateButtonVisibilities() {
    debugRootView.removeAllViews();

    retryButton.setVisibility(playerNeedsSource ? View.VISIBLE : View.GONE);
    debugRootView.addView(retryButton);

    if (player == null) {
        return;
    }

    MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
    if (mappedTrackInfo == null) {
        return;
    }

    for (int i = 0; i < mappedTrackInfo.length; i++) {
        TrackGroupArray trackGroups = mappedTrackInfo.getTrackGroups(i);
        if (trackGroups.length != 0) {
            Button button = new Button(this);
            int label;
            switch (player.getRendererType(i)) {
                case C.TRACK_TYPE_AUDIO:
                    label = R.string.audio;
                    break;
                case C.TRACK_TYPE_VIDEO:
                    label = R.string.video;
                    break;
                case C.TRACK_TYPE_TEXT:
                    label = R.string.text;
                    break;
                default:
                    continue;
            }
            button.setText(label);
            button.setTag(i);
            button.setOnClickListener(this);
            debugRootView.addView(button, debugRootView.getChildCount() - 1);
        }
    }
}
 

@Override
public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
    updateButtonVisibilities();
    MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
    if (mappedTrackInfo != null) {
        if (mappedTrackInfo.getTrackTypeRendererSupport(C.TRACK_TYPE_VIDEO)
                == MappedTrackInfo.RENDERER_SUPPORT_UNSUPPORTED_TRACKS) {
            showToast(R.string.error_unsupported_video);
        }
        if (mappedTrackInfo.getTrackTypeRendererSupport(C.TRACK_TYPE_AUDIO)
                == MappedTrackInfo.RENDERER_SUPPORT_UNSUPPORTED_TRACKS) {
            showToast(R.string.error_unsupported_audio);
        }
    }
}
 

@Override
public void onClick(View view) {
    if (view == retryButton) {
        initializePlayer();
    } else if (view.getParent() == debugRootView) {
        MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
        if (mappedTrackInfo != null) {
            trackSelectionHelper.showSelectionDialog(this, ((Button) view).getText(),
                    trackSelector.getCurrentMappedTrackInfo(), (int) view.getTag());
        }
    }
}
 

private void updateButtonVisibilities() {
	debugRootView.removeAllViews();

	retryButton.setVisibility(needRetrySource ? View.VISIBLE : View.GONE);
	debugRootView.addView(retryButton);

	if (player == null) {
		return;
	}

	MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
	if (mappedTrackInfo == null) {
		return;
	}

	for (int i = 0; i < mappedTrackInfo.length; i++) {
		TrackGroupArray trackGroups = mappedTrackInfo.getTrackGroups(i);
		if (trackGroups.length != 0) {
			Button button = new Button(fragActivity);
			int label;
			switch (player.getRendererType(i)) {
				case C.TRACK_TYPE_AUDIO:
					label = R.string.audio;
					break;
				case C.TRACK_TYPE_VIDEO:
					label = R.string.video;
					break;
				case C.TRACK_TYPE_TEXT:
					label = R.string.text;
					break;
				default:
					continue;
			}
			button.setText(label);
			button.setTag(i);
			button.setOnClickListener(this);
			debugRootView.addView(button, debugRootView.getChildCount() - 1);
		}
	}
}
 

@Override
public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
	updateButtonVisibilities();
	MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
	if (mappedTrackInfo != null) {
		if (mappedTrackInfo.getTrackTypeRendererSupport(C.TRACK_TYPE_VIDEO)
			== MappedTrackInfo.RENDERER_SUPPORT_UNSUPPORTED_TRACKS) {
			showToast(R.string.error_unsupported_video);
		}
		if (mappedTrackInfo.getTrackTypeRendererSupport(C.TRACK_TYPE_AUDIO)
			== MappedTrackInfo.RENDERER_SUPPORT_UNSUPPORTED_TRACKS) {
			showToast(R.string.error_unsupported_audio);
		}
	}
}
 

@Override
public void onClick(View view) {
	if (view == retryButton) {
		initializePlayer();
	} else if (view.getParent() == debugRootView) {
		MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
		if (mappedTrackInfo != null) {
			trackSelectionHelper.showSelectionDialog(fragActivity, ((Button) view).getText(),
													 trackSelector.getCurrentMappedTrackInfo(), (int) view.getTag());
		}
	}
}
 

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(com.alienpants.leafpicrevived.R.menu.menu_video_player, menu);

    MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
    if (player != null && mappedTrackInfo != null) {
        for (int i = 0; i < mappedTrackInfo.length; i++) {
            TrackGroupArray trackGroups = mappedTrackInfo.getTrackGroups(i);
            if (trackGroups.length != 0) {
                switch (player.getRendererType(i)) {
                    case C.TRACK_TYPE_AUDIO:
                        menu.findItem(R.id.audio_stuff).setVisible(true);
                        audio = i;
                        break;
                    case C.TRACK_TYPE_VIDEO:
                        menu.findItem(R.id.video_stuff).setVisible(true);
                        video = i;
                        break;
                    case C.TRACK_TYPE_TEXT:
                        menu.findItem(R.id.text_stuff).setVisible(true);
                        text = i;
                        break;
                }
            }
        }

    }
    MenuItem loop = menu.findItem(R.id.loop_video);
    loop.setChecked(Prefs.getLoopVideo());
    return true;
}
 

@SuppressWarnings("unchecked")
private void onMediaPrepared() {
  Assertions.checkNotNull(mediaPreparer);
  Assertions.checkNotNull(mediaPreparer.mediaPeriods);
  Assertions.checkNotNull(mediaPreparer.timeline);
  int periodCount = mediaPreparer.mediaPeriods.length;
  int rendererCount = rendererCapabilities.length;
  trackSelectionsByPeriodAndRenderer =
      (List<TrackSelection>[][]) new List<?>[periodCount][rendererCount];
  immutableTrackSelectionsByPeriodAndRenderer =
      (List<TrackSelection>[][]) new List<?>[periodCount][rendererCount];
  for (int i = 0; i < periodCount; i++) {
    for (int j = 0; j < rendererCount; j++) {
      trackSelectionsByPeriodAndRenderer[i][j] = new ArrayList<>();
      immutableTrackSelectionsByPeriodAndRenderer[i][j] =
          Collections.unmodifiableList(trackSelectionsByPeriodAndRenderer[i][j]);
    }
  }
  trackGroupArrays = new TrackGroupArray[periodCount];
  mappedTrackInfos = new MappedTrackInfo[periodCount];
  for (int i = 0; i < periodCount; i++) {
    trackGroupArrays[i] = mediaPreparer.mediaPeriods[i].getTrackGroups();
    TrackSelectorResult trackSelectorResult = runTrackSelection(/* periodIndex= */ i);
    trackSelector.onSelectionActivated(trackSelectorResult.info);
    mappedTrackInfos[i] = Assertions.checkNotNull(trackSelector.getCurrentMappedTrackInfo());
  }
  setPreparedWithMedia();
  Assertions.checkNotNull(callbackHandler)
      .post(() -> Assertions.checkNotNull(callback).onPrepared(this));
}
 

/**
 * Returns the mapped track info for the given period. Must not be called until after preparation
 * completes.
 *
 * @param periodIndex The period index.
 * @return The {@link MappedTrackInfo} for the period.
 */
public MappedTrackInfo getMappedTrackInfo(int periodIndex) {
  assertPreparedWithMedia();
  return mappedTrackInfos[periodIndex];
}
 

/**
 * Returns the mapped track info for the given period. Must not be called until after preparation
 * completes.
 *
 * @param periodIndex The period index.
 * @return The {@link MappedTrackInfo} for the period.
 */
public MappedTrackInfo getMappedTrackInfo(int periodIndex) {
  assertPreparedWithMedia();
  return mappedTrackInfos[periodIndex];
}
 

/**
 * Returns the mapped track info for the given period. Must not be called until after preparation
 * completes.
 *
 * @param periodIndex The period index.
 * @return The {@link MappedTrackInfo} for the period.
 */
public MappedTrackInfo getMappedTrackInfo(int periodIndex) {
  assertPreparedWithMedia();
  return mappedTrackInfos[periodIndex];
}