B_MEDIA_SEEK_DIRECTION_MASK
flags = (flags & B_MEDIA_SEEK_DIRECTION_MASK) | B_MEDIA_SEEK_TO_TIME;
flags = (flags & B_MEDIA_SEEK_DIRECTION_MASK) | B_MEDIA_SEEK_TO_FRAME;
flags = (flags & B_MEDIA_SEEK_DIRECTION_MASK) | B_MEDIA_SEEK_TO_TIME;
flags = (flags & B_MEDIA_SEEK_DIRECTION_MASK) | B_MEDIA_SEEK_TO_FRAME;