Exemplo n.º 1
0
  /**
   * Create a random queue.
   *
   * @param musicProvider the provider used for fetching music.
   * @return list containing {@link MediaSessionCompat.QueueItem}'s
   */
  public static List<MediaSessionCompat.QueueItem> getRandomQueue(MusicProvider musicProvider) {
    List<MediaMetadataCompat> result = new ArrayList<>();

    for (String genre : musicProvider.getGenres()) {
      Iterable<MediaMetadataCompat> tracks = musicProvider.getMusicsByGenre(genre);
      for (MediaMetadataCompat track : tracks) {
        if (ThreadLocalRandom.current().nextBoolean()) {
          result.add(track);
        }
      }
    }
    LogUtils.d(TAG, "getRandomQueue: result.size=", result.size());

    Collections.shuffle(result);

    return convertToQueue(result, MEDIA_ID_MUSICS_BY_SEARCH, "random");
  }
Exemplo n.º 2
0
  public static List<MediaSessionCompat.QueueItem> getPlayingQueueFromSearch(
      String query, Bundle queryParams, MusicProvider musicProvider) {

    LogUtils.d(
        TAG, "Creating playing queue for musics from search: ", query, " params=", queryParams);

    VoiceSearchParams params = new VoiceSearchParams(query, queryParams);

    LogUtils.d(TAG, "VoiceSearchParams: ", params);

    if (params.isAny) {
      // If isAny is true, we will play anything. This is app-dependent, and can be,
      // for example, favorite playlists, "I'm feeling lucky", most recent, etc.
      return getRandomQueue(musicProvider);
    }

    Iterable<MediaMetadataCompat> result = null;
    if (params.isAlbumFocus) {
      result = musicProvider.searchMusicByAlbum(params.album);
    } else if (params.isGenreFocus) {
      result = musicProvider.getMusicsByGenre(params.genre);
    } else if (params.isArtistFocus) {
      result = musicProvider.searchMusicByArtist(params.artist);
    } else if (params.isSongFocus) {
      result = musicProvider.searchMusicBySongTitle(params.song);
    }

    // If there was no results using media focus parameter, we do an unstructured query.
    // This is useful when the user is searching for something that looks like an artist
    // to Google, for example, but is not. For example, a user searching for Madonna on
    // a PodCast application wouldn't get results if we only looked at the
    // Artist (podcast author). Then, we can instead do an unstructured search.
    if (params.isUnstructured || result == null || !result.iterator().hasNext()) {
      // To keep it simple for this example, we do unstructured searches on the
      // song title only. A real world application could search on other fields as well.
      result = musicProvider.searchMusicBySongTitle(query);
    }

    return convertToQueue(result, MEDIA_ID_MUSICS_BY_SEARCH, query);
  }
Exemplo n.º 3
0
  public static List<MediaSessionCompat.QueueItem> getPlayingQueue(
      String mediaId, MusicProvider musicProvider) {

    // extract the browsing hierarchy from the media ID:
    String[] hierarchy = MediaIDHelper.getHierarchy(mediaId);

    if (hierarchy.length != 2) {
      LogUtils.e(TAG, "Could not build a playing queue for this mediaId: ", mediaId);
      return null;
    }

    String categoryType = hierarchy[0];
    String categoryValue = hierarchy[1];
    LogUtils.d(TAG, "Creating playing queue for ", categoryType, ",  ", categoryValue);

    Iterable<MediaMetadataCompat> tracks = null;
    // This sample only supports genre and by_search category types.
    switch (categoryType) {
      case MEDIA_ID_MUSICS_BY_GENRE:
        tracks = musicProvider.getMusicsByGenre(categoryValue);
        break;
      case MEDIA_ID_MUSICS_BY_SEARCH:
        tracks = musicProvider.searchMusicBySongTitle(categoryValue);
        break;
      case MEDIA_ID_MUSICS_BY_ALBUM:
        tracks = musicProvider.getMusicsByAlbum(categoryValue);
        break;
      case MEDIA_ID_MUSICS_BY_ARTIST:
        tracks = musicProvider.getMusicsByArtist(categoryValue);
        break;
    }

    if (tracks == null) {
      LogUtils.e(TAG, "Unrecognized category type: ", categoryType, " for media ", mediaId);
      return null;
    }

    return convertToQueue(tracks, hierarchy[0], hierarchy[1]);
  }