Java Code Examples for com.google.android.exoplayer2.C#RoleFlags

The following examples show how to use com.google.android.exoplayer2.C#RoleFlags . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: DashManifestParser.java    From Telegram-FOSS with GNU General Public License v2.0 6 votes vote down vote up 
@C.RoleFlags
protected int parseTvaAudioPurposeCsValue(String value) {
  if (value == null) {
    return 0;
  }
  switch (value) {
    case "1": // Audio description for the visually impaired.
      return C.ROLE_FLAG_DESCRIBES_VIDEO;
    case "2": // Audio description for the hard of hearing.
      return C.ROLE_FLAG_ENHANCED_DIALOG_INTELLIGIBILITY;
    case "3": // Supplemental commentary.
      return C.ROLE_FLAG_SUPPLEMENTARY;
    case "4": // Director's commentary.
      return C.ROLE_FLAG_COMMENTARY;
    case "6": // Main programme audio.
      return C.ROLE_FLAG_MAIN;
    default:
      return 0;
  }
}
Example 2
Source File: HlsPlaylistParser.java    From MediaSDK with Apache License 2.0 6 votes vote down vote up 
@C.RoleFlags
private static int parseRoleFlags(String line, Map<String, String> variableDefinitions) {
  String concatenatedCharacteristics =
      parseOptionalStringAttr(line, REGEX_CHARACTERISTICS, variableDefinitions);
  if (TextUtils.isEmpty(concatenatedCharacteristics)) {
    return 0;
  }
  String[] characteristics = Util.split(concatenatedCharacteristics, ",");
  @C.RoleFlags int roleFlags = 0;
  if (Util.contains(characteristics, "public.accessibility.describes-video")) {
    roleFlags |= C.ROLE_FLAG_DESCRIBES_VIDEO;
  }
  if (Util.contains(characteristics, "public.accessibility.transcribes-spoken-dialog")) {
    roleFlags |= C.ROLE_FLAG_TRANSCRIBES_DIALOG;
  }
  if (Util.contains(characteristics, "public.accessibility.describes-music-and-sound")) {
    roleFlags |= C.ROLE_FLAG_DESCRIBES_MUSIC_AND_SOUND;
  }
  if (Util.contains(characteristics, "public.easy-to-read")) {
    roleFlags |= C.ROLE_FLAG_EASY_TO_READ;
  }
  return roleFlags;
}
Example 3
Source File: DashManifestParser.java    From Telegram with GNU General Public License v2.0 6 votes vote down vote up 
@C.RoleFlags
protected int parseTvaAudioPurposeCsValue(String value) {
  if (value == null) {
    return 0;
  }
  switch (value) {
    case "1": // Audio description for the visually impaired.
      return C.ROLE_FLAG_DESCRIBES_VIDEO;
    case "2": // Audio description for the hard of hearing.
      return C.ROLE_FLAG_ENHANCED_DIALOG_INTELLIGIBILITY;
    case "3": // Supplemental commentary.
      return C.ROLE_FLAG_SUPPLEMENTARY;
    case "4": // Director's commentary.
      return C.ROLE_FLAG_COMMENTARY;
    case "6": // Main programme audio.
      return C.ROLE_FLAG_MAIN;
    default:
      return 0;
  }
}
Example 4
Source File: DashManifestParser.java    From MediaSDK with Apache License 2.0 6 votes vote down vote up 
@C.RoleFlags
protected int parseTvaAudioPurposeCsValue(@Nullable String value) {
  if (value == null) {
    return 0;
  }
  switch (value) {
    case "1": // Audio description for the visually impaired.
      return C.ROLE_FLAG_DESCRIBES_VIDEO;
    case "2": // Audio description for the hard of hearing.
      return C.ROLE_FLAG_ENHANCED_DIALOG_INTELLIGIBILITY;
    case "3": // Supplemental commentary.
      return C.ROLE_FLAG_SUPPLEMENTARY;
    case "4": // Director's commentary.
      return C.ROLE_FLAG_COMMENTARY;
    case "6": // Main programme audio.
      return C.ROLE_FLAG_MAIN;
    default:
      return 0;
  }
}
Example 5
Source File: TrackSelectionParameters.java    From MediaSDK with Apache License 2.0 5 votes vote down vote up 
TrackSelectionParameters(
    @Nullable String preferredAudioLanguage,
    @Nullable String preferredTextLanguage,
    @C.RoleFlags int preferredTextRoleFlags,
    boolean selectUndeterminedTextLanguage,
    @C.SelectionFlags int disabledTextTrackSelectionFlags) {
  // Audio
  this.preferredAudioLanguage = Util.normalizeLanguageCode(preferredAudioLanguage);
  // Text
  this.preferredTextLanguage = Util.normalizeLanguageCode(preferredTextLanguage);
  this.preferredTextRoleFlags = preferredTextRoleFlags;
  this.selectUndeterminedTextLanguage = selectUndeterminedTextLanguage;
  this.disabledTextTrackSelectionFlags = disabledTextTrackSelectionFlags;
}
Example 6
Source File: DashManifestParser.java    From Telegram-FOSS with GNU General Public License v2.0 5 votes vote down vote up 
@C.RoleFlags
protected int parseRoleFlagsFromAccessibilityDescriptors(
    List<Descriptor> accessibilityDescriptors) {
  @C.RoleFlags int result = 0;
  for (int i = 0; i < accessibilityDescriptors.size(); i++) {
    Descriptor descriptor = accessibilityDescriptors.get(i);
    if ("urn:mpeg:dash:role:2011".equalsIgnoreCase(descriptor.schemeIdUri)) {
      result |= parseDashRoleSchemeValue(descriptor.value);
    } else if ("urn:tva:metadata:cs:AudioPurposeCS:2007"
        .equalsIgnoreCase(descriptor.schemeIdUri)) {
      result |= parseTvaAudioPurposeCsValue(descriptor.value);
    }
  }
  return result;
}
Example 7
Source File: DashManifestParser.java    From Telegram-FOSS with GNU General Public License v2.0 5 votes vote down vote up 
@C.RoleFlags
protected int parseRoleFlagsFromRoleDescriptors(List<Descriptor> roleDescriptors) {
  @C.RoleFlags int result = 0;
  for (int i = 0; i < roleDescriptors.size(); i++) {
    Descriptor descriptor = roleDescriptors.get(i);
    if ("urn:mpeg:dash:role:2011".equalsIgnoreCase(descriptor.schemeIdUri)) {
      result |= parseDashRoleSchemeValue(descriptor.value);
    }
  }
  return result;
}
Example 8
Source File: DashManifestParser.java    From Telegram with GNU General Public License v2.0 5 votes vote down vote up 
@C.RoleFlags
protected int parseRoleFlagsFromAccessibilityDescriptors(
    List<Descriptor> accessibilityDescriptors) {
  @C.RoleFlags int result = 0;
  for (int i = 0; i < accessibilityDescriptors.size(); i++) {
    Descriptor descriptor = accessibilityDescriptors.get(i);
    if ("urn:mpeg:dash:role:2011".equalsIgnoreCase(descriptor.schemeIdUri)) {
      result |= parseDashRoleSchemeValue(descriptor.value);
    } else if ("urn:tva:metadata:cs:AudioPurposeCS:2007"
        .equalsIgnoreCase(descriptor.schemeIdUri)) {
      result |= parseTvaAudioPurposeCsValue(descriptor.value);
    }
  }
  return result;
}
Example 9
Source File: DashManifestParser.java    From Telegram with GNU General Public License v2.0 5 votes vote down vote up 
@C.RoleFlags
protected int parseDashRoleSchemeValue(String value) {
  if (value == null) {
    return 0;
  }
  switch (value) {
    case "main":
      return C.ROLE_FLAG_MAIN;
    case "alternate":
      return C.ROLE_FLAG_ALTERNATE;
    case "supplementary":
      return C.ROLE_FLAG_SUPPLEMENTARY;
    case "commentary":
      return C.ROLE_FLAG_COMMENTARY;
    case "dub":
      return C.ROLE_FLAG_DUB;
    case "emergency":
      return C.ROLE_FLAG_EMERGENCY;
    case "caption":
      return C.ROLE_FLAG_CAPTION;
    case "subtitle":
      return C.ROLE_FLAG_SUBTITLE;
    case "sign":
      return C.ROLE_FLAG_SIGN;
    case "description":
      return C.ROLE_FLAG_DESCRIBES_VIDEO;
    case "enhanced-audio-intelligibility":
      return C.ROLE_FLAG_ENHANCED_DIALOG_INTELLIGIBILITY;
    default:
      return 0;
  }
}
Example 10
Source File: TrackSelectionParameters.java    From Telegram-FOSS with GNU General Public License v2.0 5 votes vote down vote up 
TrackSelectionParameters(
    @Nullable String preferredAudioLanguage,
    @Nullable String preferredTextLanguage,
    @C.RoleFlags int preferredTextRoleFlags,
    boolean selectUndeterminedTextLanguage,
    @C.SelectionFlags int disabledTextTrackSelectionFlags) {
  // Audio
  this.preferredAudioLanguage = Util.normalizeLanguageCode(preferredAudioLanguage);
  // Text
  this.preferredTextLanguage = Util.normalizeLanguageCode(preferredTextLanguage);
  this.preferredTextRoleFlags = preferredTextRoleFlags;
  this.selectUndeterminedTextLanguage = selectUndeterminedTextLanguage;
  this.disabledTextTrackSelectionFlags = disabledTextTrackSelectionFlags;
}
Example 11
Source File: DashManifestParser.java    From Telegram with GNU General Public License v2.0 5 votes vote down vote up 
@C.RoleFlags
protected int parseRoleFlagsFromRoleDescriptors(List<Descriptor> roleDescriptors) {
  @C.RoleFlags int result = 0;
  for (int i = 0; i < roleDescriptors.size(); i++) {
    Descriptor descriptor = roleDescriptors.get(i);
    if ("urn:mpeg:dash:role:2011".equalsIgnoreCase(descriptor.schemeIdUri)) {
      result |= parseDashRoleSchemeValue(descriptor.value);
    }
  }
  return result;
}
Example 12
Source File: DefaultTrackSelector.java    From Telegram with GNU General Public License v2.0 4 votes vote down vote up 
Parameters(
    // Video
    int maxVideoWidth,
    int maxVideoHeight,
    int maxVideoFrameRate,
    int maxVideoBitrate,
    boolean exceedVideoConstraintsIfNecessary,
    boolean allowVideoMixedMimeTypeAdaptiveness,
    boolean allowVideoNonSeamlessAdaptiveness,
    int viewportWidth,
    int viewportHeight,
    boolean viewportOrientationMayChange,
    // Audio
    @Nullable String preferredAudioLanguage,
    int maxAudioChannelCount,
    int maxAudioBitrate,
    boolean exceedAudioConstraintsIfNecessary,
    boolean allowAudioMixedMimeTypeAdaptiveness,
    boolean allowAudioMixedSampleRateAdaptiveness,
    boolean allowAudioMixedChannelCountAdaptiveness,
    // Text
    @Nullable String preferredTextLanguage,
    @C.RoleFlags int preferredTextRoleFlags,
    boolean selectUndeterminedTextLanguage,
    @C.SelectionFlags int disabledTextTrackSelectionFlags,
    // General
    boolean forceLowestBitrate,
    boolean forceHighestSupportedBitrate,
    boolean exceedRendererCapabilitiesIfNecessary,
    int tunnelingAudioSessionId,
    // Overrides
    SparseArray<Map<TrackGroupArray, SelectionOverride>> selectionOverrides,
    SparseBooleanArray rendererDisabledFlags) {
  super(
      preferredAudioLanguage,
      preferredTextLanguage,
      preferredTextRoleFlags,
      selectUndeterminedTextLanguage,
      disabledTextTrackSelectionFlags);
  // Video
  this.maxVideoWidth = maxVideoWidth;
  this.maxVideoHeight = maxVideoHeight;
  this.maxVideoFrameRate = maxVideoFrameRate;
  this.maxVideoBitrate = maxVideoBitrate;
  this.exceedVideoConstraintsIfNecessary = exceedVideoConstraintsIfNecessary;
  this.allowVideoMixedMimeTypeAdaptiveness = allowVideoMixedMimeTypeAdaptiveness;
  this.allowVideoNonSeamlessAdaptiveness = allowVideoNonSeamlessAdaptiveness;
  this.viewportWidth = viewportWidth;
  this.viewportHeight = viewportHeight;
  this.viewportOrientationMayChange = viewportOrientationMayChange;
  // Audio
  this.maxAudioChannelCount = maxAudioChannelCount;
  this.maxAudioBitrate = maxAudioBitrate;
  this.exceedAudioConstraintsIfNecessary = exceedAudioConstraintsIfNecessary;
  this.allowAudioMixedMimeTypeAdaptiveness = allowAudioMixedMimeTypeAdaptiveness;
  this.allowAudioMixedSampleRateAdaptiveness = allowAudioMixedSampleRateAdaptiveness;
  this.allowAudioMixedChannelCountAdaptiveness = allowAudioMixedChannelCountAdaptiveness;
  // General
  this.forceLowestBitrate = forceLowestBitrate;
  this.forceHighestSupportedBitrate = forceHighestSupportedBitrate;
  this.exceedRendererCapabilitiesIfNecessary = exceedRendererCapabilitiesIfNecessary;
  this.tunnelingAudioSessionId = tunnelingAudioSessionId;
  // Deprecated fields.
  this.allowMixedMimeAdaptiveness = allowVideoMixedMimeTypeAdaptiveness;
  this.allowNonSeamlessAdaptiveness = allowVideoNonSeamlessAdaptiveness;
  // Overrides
  this.selectionOverrides = selectionOverrides;
  this.rendererDisabledFlags = rendererDisabledFlags;
}
Example 13
Source File: DashManifestParser.java    From Telegram with GNU General Public License v2.0 4 votes vote down vote up 
protected Format buildFormat(
    String id,
    String containerMimeType,
    int width,
    int height,
    float frameRate,
    int audioChannels,
    int audioSamplingRate,
    int bitrate,
    String language,
    List<Descriptor> roleDescriptors,
    List<Descriptor> accessibilityDescriptors,
    String codecs,
    List<Descriptor> supplementalProperties) {
  String sampleMimeType = getSampleMimeType(containerMimeType, codecs);
  @C.SelectionFlags int selectionFlags = parseSelectionFlagsFromRoleDescriptors(roleDescriptors);
  @C.RoleFlags int roleFlags = parseRoleFlagsFromRoleDescriptors(roleDescriptors);
  roleFlags |= parseRoleFlagsFromAccessibilityDescriptors(accessibilityDescriptors);
  if (sampleMimeType != null) {
    if (MimeTypes.AUDIO_E_AC3.equals(sampleMimeType)) {
      sampleMimeType = parseEac3SupplementalProperties(supplementalProperties);
    }
    if (MimeTypes.isVideo(sampleMimeType)) {
      return Format.createVideoContainerFormat(
          id,
          /* label= */ null,
          containerMimeType,
          sampleMimeType,
          codecs,
          /* metadata= */ null,
          bitrate,
          width,
          height,
          frameRate,
          /* initializationData= */ null,
          selectionFlags,
          roleFlags);
    } else if (MimeTypes.isAudio(sampleMimeType)) {
      return Format.createAudioContainerFormat(
          id,
          /* label= */ null,
          containerMimeType,
          sampleMimeType,
          codecs,
          /* metadata= */ null,
          bitrate,
          audioChannels,
          audioSamplingRate,
          /* initializationData= */ null,
          selectionFlags,
          roleFlags,
          language);
    } else if (mimeTypeIsRawText(sampleMimeType)) {
      int accessibilityChannel;
      if (MimeTypes.APPLICATION_CEA608.equals(sampleMimeType)) {
        accessibilityChannel = parseCea608AccessibilityChannel(accessibilityDescriptors);
      } else if (MimeTypes.APPLICATION_CEA708.equals(sampleMimeType)) {
        accessibilityChannel = parseCea708AccessibilityChannel(accessibilityDescriptors);
      } else {
        accessibilityChannel = Format.NO_VALUE;
      }
      return Format.createTextContainerFormat(
          id,
          /* label= */ null,
          containerMimeType,
          sampleMimeType,
          codecs,
          bitrate,
          selectionFlags,
          roleFlags,
          language,
          accessibilityChannel);
    }
  }
  return Format.createContainerFormat(
      id,
      /* label= */ null,
      containerMimeType,
      sampleMimeType,
      codecs,
      bitrate,
      selectionFlags,
      roleFlags,
      language);
}
Example 14
Source File: DashManifestParser.java    From MediaSDK with Apache License 2.0 4 votes vote down vote up 
protected Format buildFormat(
    @Nullable String id,
    @Nullable String containerMimeType,
    int width,
    int height,
    float frameRate,
    int audioChannels,
    int audioSamplingRate,
    int bitrate,
    @Nullable String language,
    List<Descriptor> roleDescriptors,
    List<Descriptor> accessibilityDescriptors,
    @Nullable String codecs,
    List<Descriptor> supplementalProperties) {
  String sampleMimeType = getSampleMimeType(containerMimeType, codecs);
  @C.SelectionFlags int selectionFlags = parseSelectionFlagsFromRoleDescriptors(roleDescriptors);
  @C.RoleFlags int roleFlags = parseRoleFlagsFromRoleDescriptors(roleDescriptors);
  roleFlags |= parseRoleFlagsFromAccessibilityDescriptors(accessibilityDescriptors);
  if (sampleMimeType != null) {
    if (MimeTypes.AUDIO_E_AC3.equals(sampleMimeType)) {
      sampleMimeType = parseEac3SupplementalProperties(supplementalProperties);
    }
    if (MimeTypes.isVideo(sampleMimeType)) {
      return Format.createVideoContainerFormat(
          id,
          /* label= */ null,
          containerMimeType,
          sampleMimeType,
          codecs,
          /* metadata= */ null,
          bitrate,
          width,
          height,
          frameRate,
          /* initializationData= */ null,
          selectionFlags,
          roleFlags);
    } else if (MimeTypes.isAudio(sampleMimeType)) {
      return Format.createAudioContainerFormat(
          id,
          /* label= */ null,
          containerMimeType,
          sampleMimeType,
          codecs,
          /* metadata= */ null,
          bitrate,
          audioChannels,
          audioSamplingRate,
          /* initializationData= */ null,
          selectionFlags,
          roleFlags,
          language);
    } else if (mimeTypeIsRawText(sampleMimeType)) {
      int accessibilityChannel;
      if (MimeTypes.APPLICATION_CEA608.equals(sampleMimeType)) {
        accessibilityChannel = parseCea608AccessibilityChannel(accessibilityDescriptors);
      } else if (MimeTypes.APPLICATION_CEA708.equals(sampleMimeType)) {
        accessibilityChannel = parseCea708AccessibilityChannel(accessibilityDescriptors);
      } else {
        accessibilityChannel = Format.NO_VALUE;
      }
      return Format.createTextContainerFormat(
          id,
          /* label= */ null,
          containerMimeType,
          sampleMimeType,
          codecs,
          bitrate,
          selectionFlags,
          roleFlags,
          language,
          accessibilityChannel);
    }
  }
  return Format.createContainerFormat(
      id,
      /* label= */ null,
      containerMimeType,
      sampleMimeType,
      codecs,
      bitrate,
      selectionFlags,
      roleFlags,
      language);
}
Example 15
Source File: DefaultTrackSelector.java    From MediaSDK with Apache License 2.0 4 votes vote down vote up 
Parameters(
    // Video
    int maxVideoWidth,
    int maxVideoHeight,
    int maxVideoFrameRate,
    int maxVideoBitrate,
    boolean exceedVideoConstraintsIfNecessary,
    boolean allowVideoMixedMimeTypeAdaptiveness,
    boolean allowVideoNonSeamlessAdaptiveness,
    int viewportWidth,
    int viewportHeight,
    boolean viewportOrientationMayChange,
    // Audio
    @Nullable String preferredAudioLanguage,
    int maxAudioChannelCount,
    int maxAudioBitrate,
    boolean exceedAudioConstraintsIfNecessary,
    boolean allowAudioMixedMimeTypeAdaptiveness,
    boolean allowAudioMixedSampleRateAdaptiveness,
    boolean allowAudioMixedChannelCountAdaptiveness,
    // Text
    @Nullable String preferredTextLanguage,
    @C.RoleFlags int preferredTextRoleFlags,
    boolean selectUndeterminedTextLanguage,
    @C.SelectionFlags int disabledTextTrackSelectionFlags,
    // General
    boolean forceLowestBitrate,
    boolean forceHighestSupportedBitrate,
    boolean exceedRendererCapabilitiesIfNecessary,
    int tunnelingAudioSessionId,
    // Overrides
    SparseArray<Map<TrackGroupArray, @NullableType SelectionOverride>> selectionOverrides,
    SparseBooleanArray rendererDisabledFlags) {
  super(
      preferredAudioLanguage,
      preferredTextLanguage,
      preferredTextRoleFlags,
      selectUndeterminedTextLanguage,
      disabledTextTrackSelectionFlags);
  // Video
  this.maxVideoWidth = maxVideoWidth;
  this.maxVideoHeight = maxVideoHeight;
  this.maxVideoFrameRate = maxVideoFrameRate;
  this.maxVideoBitrate = maxVideoBitrate;
  this.exceedVideoConstraintsIfNecessary = exceedVideoConstraintsIfNecessary;
  this.allowVideoMixedMimeTypeAdaptiveness = allowVideoMixedMimeTypeAdaptiveness;
  this.allowVideoNonSeamlessAdaptiveness = allowVideoNonSeamlessAdaptiveness;
  this.viewportWidth = viewportWidth;
  this.viewportHeight = viewportHeight;
  this.viewportOrientationMayChange = viewportOrientationMayChange;
  // Audio
  this.maxAudioChannelCount = maxAudioChannelCount;
  this.maxAudioBitrate = maxAudioBitrate;
  this.exceedAudioConstraintsIfNecessary = exceedAudioConstraintsIfNecessary;
  this.allowAudioMixedMimeTypeAdaptiveness = allowAudioMixedMimeTypeAdaptiveness;
  this.allowAudioMixedSampleRateAdaptiveness = allowAudioMixedSampleRateAdaptiveness;
  this.allowAudioMixedChannelCountAdaptiveness = allowAudioMixedChannelCountAdaptiveness;
  // General
  this.forceLowestBitrate = forceLowestBitrate;
  this.forceHighestSupportedBitrate = forceHighestSupportedBitrate;
  this.exceedRendererCapabilitiesIfNecessary = exceedRendererCapabilitiesIfNecessary;
  this.tunnelingAudioSessionId = tunnelingAudioSessionId;
  // Deprecated fields.
  this.allowMixedMimeAdaptiveness = allowVideoMixedMimeTypeAdaptiveness;
  this.allowNonSeamlessAdaptiveness = allowVideoNonSeamlessAdaptiveness;
  // Overrides
  this.selectionOverrides = selectionOverrides;
  this.rendererDisabledFlags = rendererDisabledFlags;
}
Example 16
Source File: DefaultTrackSelector.java    From MediaSDK with Apache License 2.0 4 votes vote down vote up 
@Override
public ParametersBuilder setPreferredTextRoleFlags(@C.RoleFlags int preferredTextRoleFlags) {
  super.setPreferredTextRoleFlags(preferredTextRoleFlags);
  return this;
}
Example 17
Source File: DefaultTrackSelector.java    From Telegram with GNU General Public License v2.0 4 votes vote down vote up 
@Override
public ParametersBuilder setPreferredTextRoleFlags(@C.RoleFlags int preferredTextRoleFlags) {
  super.setPreferredTextRoleFlags(preferredTextRoleFlags);
  return this;
}
Example 18
Source File: TrackSelectionParameters.java    From Telegram-FOSS with GNU General Public License v2.0 2 votes vote down vote up 
/**
 * Sets the preferred {@link C.RoleFlags} for text tracks.
 *
 * @param preferredTextRoleFlags Preferred text role flags.
 * @return This builder.
 */
public Builder setPreferredTextRoleFlags(@C.RoleFlags int preferredTextRoleFlags) {
  this.preferredTextRoleFlags = preferredTextRoleFlags;
  return this;
}
Example 19
Source File: TrackSelectionParameters.java    From Telegram with GNU General Public License v2.0 2 votes vote down vote up 
/**
 * Sets the preferred {@link C.RoleFlags} for text tracks.
 *
 * @param preferredTextRoleFlags Preferred text role flags.
 * @return This builder.
 */
public Builder setPreferredTextRoleFlags(@C.RoleFlags int preferredTextRoleFlags) {
  this.preferredTextRoleFlags = preferredTextRoleFlags;
  return this;
}
Example 20
Source File: TrackSelectionParameters.java    From MediaSDK with Apache License 2.0 2 votes vote down vote up 
/**
 * Sets the preferred {@link C.RoleFlags} for text tracks.
 *
 * @param preferredTextRoleFlags Preferred text role flags.
 * @return This builder.
 */
public Builder setPreferredTextRoleFlags(@C.RoleFlags int preferredTextRoleFlags) {
  this.preferredTextRoleFlags = preferredTextRoleFlags;
  return this;
}