SmbDataSourceInject.kt

private fun buildMediaSource(uri: Uri, drmSessionManager: DrmSessionManager<FrameworkMediaCrypto>): MediaSource? {
  when (val type = PlayerUtils.inferContentType(videoUrl)) {
    ...
    C.TYPE_OTHER -> {
      return if (videoUrl.isSmb()) {
        ProgressiveMediaSource.Factory(SmbDataSourceFactory(videoUrl))
                              .setDrmSessionManager(drmSessionManager)
                              .createMediaSource(uri)
      } else {
        ProgressiveMediaSource.Factory(mediaDataSourceFactory)
                            .setDrmSessionManager(drmSessionManager)
                            .createMediaSource(uri)
      }
    }
  }
}