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 23 namespace android { 24 25 class IVolumeCurvesCollection 26 { 27 public: 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 50 protected: 51 virtual ~IVolumeCurvesCollection() {} 52 }; 53 54 }; // namespace android 55
