1 /*
2  * Copyright (C) 2021 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_AUTOMOTIVE_AUDIOCONTROL_AUDIOCONTROL_H
17 #define ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_AUDIOCONTROL_H
18 
19 #include <aidl/android/hardware/automotive/audiocontrol/AudioFocusChange.h>
20 #include <aidl/android/hardware/automotive/audiocontrol/BnAudioControl.h>
21 #include <aidl/android/hardware/automotive/audiocontrol/DuckingInfo.h>
22 #include <aidl/android/hardware/automotive/audiocontrol/MutingInfo.h>
23 
24 namespace aidl {
25 namespace android {
26 namespace hardware {
27 namespace automotive {
28 namespace audiocontrol {
29 
30 class AudioControl : public BnAudioControl {
31   public:
32     ndk::ScopedAStatus onAudioFocusChange(const std::string& in_usage, int32_t in_zoneId,
33                                           AudioFocusChange in_focusChange) override;
34     ndk::ScopedAStatus onDevicesToDuckChange(
35             const std::vector<DuckingInfo>& in_duckingInfos) override;
36     ndk::ScopedAStatus onDevicesToMuteChange(
37             const std::vector<MutingInfo>& in_mutingInfos) override;
38     ndk::ScopedAStatus registerFocusListener(
39             const std::shared_ptr<IFocusListener>& in_listener) override;
40     ndk::ScopedAStatus setBalanceTowardRight(float in_value) override;
41     ndk::ScopedAStatus setFadeTowardFront(float in_value) override;
42     binder_status_t dump(int fd, const char** args, uint32_t numArgs) override;
43 
44     void setAudioEnabled(bool isEnabled);
45 
46   private:
47     // This focus listener will only be used by this HAL instance to communicate with
48     // a single instance of CarAudioService. As such, it doesn't have explicit serialization.
49     // If a different AudioControl implementation were to have multiple threads leveraging this
50     // listener, then it should also include mutexes or make the listener atomic.
51     std::shared_ptr<IFocusListener> mFocusListener;
52 
53     binder_status_t cmdHelp(int fd) const;
54     binder_status_t cmdRequestFocus(int fd, const char** args, uint32_t numArgs);
55     binder_status_t cmdAbandonFocus(int fd, const char** args, uint32_t numArgs);
56     binder_status_t dumpsys(int fd);
57 };
58 
59 }  // namespace audiocontrol
60 }  // namespace automotive
61 }  // namespace hardware
62 }  // namespace android
63 }  // namespace aidl
64 
65 #endif  // ANDROID_HARDWARE_AUTOMOTIVE_AUDIOCONTROL_AUDIOCONTROL_H
66