1 /*
2  * Copyright (C) 2019 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 #ifndef ANDROID_HARDWARE_VIBRATOR_V1_3_VIBRATOR_H
17 #define ANDROID_HARDWARE_VIBRATOR_V1_3_VIBRATOR_H
18 
19 #include <android/hardware/vibrator/1.3/IVibrator.h>
20 #include <hidl/Status.h>
21 
22 namespace android {
23 namespace hardware {
24 namespace vibrator {
25 namespace V1_3 {
26 namespace implementation {
27 
28 using android::hardware::vibrator::V1_0::EffectStrength;
29 using android::hardware::vibrator::V1_0::Status;
30 
31 class Vibrator : public IVibrator {
32   public:
33     Vibrator();
34 
35     // Methods from ::android::hardware::vibrator::V1_0::IVibrator follow.
36     Return<Status> on(uint32_t timeoutMs) override;
37     Return<Status> off() override;
38     Return<bool> supportsAmplitudeControl() override;
39     Return<Status> setAmplitude(uint8_t amplitude) override;
40     Return<void> perform(V1_0::Effect effect, EffectStrength strength,
41                          perform_cb _hidl_cb) override;
42 
43     // Methods from ::android::hardware::vibrator::V1_1::IVibrator follow.
44     Return<void> perform_1_1(V1_1::Effect_1_1 effect, EffectStrength strength,
45                              perform_cb _hidl_cb) override;
46 
47     // Methods from ::android::hardware::vibrator::V1_2::IVibrator follow.
48     Return<void> perform_1_2(V1_2::Effect effect, EffectStrength strength,
49                              perform_cb _hidl_cb) override;
50 
51     // Methods from ::android::hardware::vibrator::V1_3::IVibrator follow.
52     Return<bool> supportsExternalControl() override;
53     Return<Status> setExternalControl(bool enabled) override;
54     Return<void> perform_1_3(Effect effect, EffectStrength strength, perform_cb _hidl_cb) override;
55 
56   private:
57     Return<void> perform(Effect effect, EffectStrength strength, perform_cb _hidl_cb);
58     template <typename T>
59     Return<void> perform(T effect, EffectStrength strength, perform_cb _hidl_cb);
60     Status enable(bool enabled);
61     Status activate(uint32_t ms);
62     void timeout();
63 
64     static void timerCallback(union sigval sigval);
65     static const std::string effectToName(Effect effect);
66     static uint32_t effectToMs(Effect effect, Status* status);
67     static uint8_t strengthToAmplitude(EffectStrength strength, Status* status);
68 
69   private:
70     bool mEnabled{false};
71     uint8_t mAmplitude{UINT8_MAX};
72     bool mExternalControl{false};
73     std::mutex mMutex;
74     timer_t mTimer{nullptr};
75 };
76 }  // namespace implementation
77 }  // namespace V1_3
78 }  // namespace vibrator
79 }  // namespace hardware
80 }  // namespace android
81 
82 #endif  // ANDROID_HARDWARE_VIBRATOR_V1_3_VIBRATOR_H
83