1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package android.hardware.vr@1.0;
18
19interface IVr {
20  /**
21   * Convenience method to set up any state needed at runtime startup.  This is
22   * called once from the VrManagerService during its boot phase.
23   */
24  @callflow(next={"*"})
25  @entry
26  @exit
27  init();
28
29  /**
30   * Set the VR mode state.  Possible states of the enabled parameter are:
31   * false - VR mode is disabled, turn off all VR-specific settings.
32   * true - VR mode is enabled, turn on all VR-specific settings.
33   *
34   * This must be called whenever the the Android system enters or leaves VR
35   * mode. This will typically occur when the user switches to or from a VR
36   * application that is doing stereoscopic rendering.
37   */
38  @callflow(next={"*"})
39  @exit
40  setVrMode(bool enabled);
41};
42