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