| /** |
| * Copyright (c) 2016, The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package android.service.vr; |
| |
| import android.service.vr.IVrStateCallbacks; |
| |
| /** @hide */ |
| interface IVrManager { |
| |
| /** |
| * Add a callback to be notified when VR mode state changes. |
| * |
| * @param cb the callback instance to add. |
| */ |
| void registerListener(in IVrStateCallbacks cb); |
| |
| /** |
| * Remove the callack from the current set of registered callbacks. |
| * |
| * @param cb the callback to remove. |
| */ |
| void unregisterListener(in IVrStateCallbacks cb); |
| |
| /** |
| * Return current VR mode state. |
| * |
| * @return {@code true} if VR mode is enabled. |
| */ |
| boolean getVrModeState(); |
| |
| /** |
| * Sets the persistent VR mode state of a device. When a device is in persistent VR mode it will |
| * remain in VR mode even if the foreground does not specify VR mode being enabled. Mainly used |
| * by VR viewers to indicate that a device is placed in a VR viewer. |
| * |
| * @param enabled true if the device should be placed in persistent VR mode. |
| */ |
| void setPersistentVrModeEnabled(in boolean enabled); |
| |
| /** |
| * Return current virtual display id. |
| * |
| * @return {@link android.view.Display.INVALID_DISPLAY} if there is no virtual display |
| * currently, else return the display id of the virtual display |
| */ |
| int getCompatibilityDisplayId(); |
| } |
| |