1/*
2 * Copyright (C) 2015 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 <system/audio.h>
20#include <Volume.h>
21#include <utils/Errors.h>
22
23namespace android {
24
25class IVolumeCurvesCollection
26{
27public:
28    virtual void clearCurrentVolumeIndex(audio_stream_type_t stream) = 0;
29    virtual void addCurrentVolumeIndex(audio_stream_type_t stream, audio_devices_t device,
30                                       int index) = 0;
31    virtual bool canBeMuted(audio_stream_type_t stream) = 0;
32    virtual int getVolumeIndexMin(audio_stream_type_t stream) const = 0;
33    virtual int getVolumeIndex(audio_stream_type_t stream, audio_devices_t device) = 0;
34    virtual int getVolumeIndexMax(audio_stream_type_t stream) const = 0;
35    virtual float volIndexToDb(audio_stream_type_t stream, device_category device,
36                               int indexInUi) const = 0;
37    virtual status_t initStreamVolume(audio_stream_type_t stream, int indexMin, int indexMax) = 0;
38
39    virtual void initializeVolumeCurves(bool /*isSpeakerDrcEnabled*/) {}
40    virtual void switchVolumeCurve(audio_stream_type_t src, audio_stream_type_t dst) = 0;
41    virtual void restoreOriginVolumeCurve(audio_stream_type_t stream)
42    {
43        switchVolumeCurve(stream, stream);
44    }
45    virtual bool hasVolumeIndexForDevice(audio_stream_type_t stream,
46                                         audio_devices_t device) const = 0;
47
48    virtual status_t dump(int fd) const = 0;
49
50protected:
51    virtual ~IVolumeCurvesCollection() {}
52};
53
54}; // namespace android
55