1 /*
2  * Copyright (C) 2018 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 
17 #pragma once
18 
19 #include <Volume.h>
20 #include <media/AudioContainers.h>
21 #include <system/audio.h>
22 #include <utils/Errors.h>
23 #include <utils/String8.h>
24 #include <vector>
25 
26 namespace android {
27 
28 class IVolumeCurves
29 {
30 public:
31     virtual ~IVolumeCurves() = default;
32 
33     virtual void clearCurrentVolumeIndex() = 0;
34     virtual void addCurrentVolumeIndex(audio_devices_t device, int index) = 0;
35     virtual bool canBeMuted() const = 0;
36     virtual int getVolumeIndexMin() const = 0;
37     virtual int getVolumeIndex(const DeviceTypeSet& device) const = 0;
38     virtual int getVolumeIndexMax() const = 0;
39     virtual float volIndexToDb(device_category device, int indexInUi) const = 0;
40     virtual bool hasVolumeIndexForDevice(audio_devices_t device) const = 0;
41     virtual status_t initVolume(int indexMin, int indexMax) = 0;
42     virtual std::vector<audio_attributes_t> getAttributes() const = 0;
43     virtual std::vector<audio_stream_type_t> getStreamTypes() const = 0;
44     virtual void dump(String8 *dst, int spaces = 0, bool curvePoints = false) const = 0;
45 };
46 
47 } // namespace android
48