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 "IVolumeCurvesCollection.h" 20 #include <utils/KeyedVector.h> 21 #include <utils/StrongPointer.h> 22 #include <utils/SortedVector.h> 23 #include <hardware/audio.h> 24 25 namespace android { 26 27 // stream descriptor used for volume control 28 class StreamDescriptor 29 { 30 public: 31 StreamDescriptor(); 32 33 int getVolumeIndex(audio_devices_t device) const; canBeMuted()34 bool canBeMuted() const { return mCanBeMuted; } 35 void clearCurrentVolumeIndex(); 36 void addCurrentVolumeIndex(audio_devices_t device, int index); getVolumeIndexMin()37 int getVolumeIndexMin() const { return mIndexMin; } getVolumeIndexMax()38 int getVolumeIndexMax() const { return mIndexMax; } 39 void setVolumeIndexMin(int volIndexMin); 40 void setVolumeIndexMax(int volIndexMax); hasVolumeIndexForDevice(audio_devices_t device)41 bool hasVolumeIndexForDevice(audio_devices_t device) const 42 { 43 device = Volume::getDeviceForVolume(device); 44 return mIndexCur.indexOfKey(device) >= 0; 45 } 46 47 void dump(int fd) const; 48 49 void setVolumeCurvePoint(device_category deviceCategory, const VolumeCurvePoint *point); getVolumeCurvePoint(device_category deviceCategory)50 const VolumeCurvePoint *getVolumeCurvePoint(device_category deviceCategory) const 51 { 52 return mVolumeCurve[deviceCategory]; 53 } 54 55 private: 56 const VolumeCurvePoint *mVolumeCurve[DEVICE_CATEGORY_CNT]; 57 KeyedVector<audio_devices_t, int> mIndexCur; /**< current volume index per device. */ 58 int mIndexMin; /**< min volume index. */ 59 int mIndexMax; /**< max volume index. */ 60 bool mCanBeMuted; /**< true is the stream can be muted. */ 61 }; 62 63 /** 64 * stream descriptors collection for volume control 65 */ 66 class StreamDescriptorCollection : public DefaultKeyedVector<audio_stream_type_t, StreamDescriptor>, 67 public IVolumeCurvesCollection 68 { 69 public: 70 StreamDescriptorCollection(); 71 72 virtual void clearCurrentVolumeIndex(audio_stream_type_t stream); 73 virtual void addCurrentVolumeIndex(audio_stream_type_t stream, audio_devices_t device, 74 int index); 75 virtual bool canBeMuted(audio_stream_type_t stream); getVolumeIndexMin(audio_stream_type_t stream)76 virtual int getVolumeIndexMin(audio_stream_type_t stream) const 77 { 78 return valueFor(stream).getVolumeIndexMin(); 79 } getVolumeIndex(audio_stream_type_t stream,audio_devices_t device)80 virtual int getVolumeIndex(audio_stream_type_t stream, audio_devices_t device) 81 { 82 return valueFor(stream).getVolumeIndex(device); 83 } getVolumeIndexMax(audio_stream_type_t stream)84 virtual int getVolumeIndexMax(audio_stream_type_t stream) const 85 { 86 return valueFor(stream).getVolumeIndexMax(); 87 } 88 virtual float volIndexToDb(audio_stream_type_t stream, device_category device, 89 int indexInUi) const; 90 virtual status_t initStreamVolume(audio_stream_type_t stream, int indexMin, int indexMax); 91 virtual void initializeVolumeCurves(bool isSpeakerDrcEnabled); 92 virtual void switchVolumeCurve(audio_stream_type_t streamSrc, audio_stream_type_t streamDst); hasVolumeIndexForDevice(audio_stream_type_t stream,audio_devices_t device)93 virtual bool hasVolumeIndexForDevice(audio_stream_type_t stream, 94 audio_devices_t device) const 95 { 96 return valueFor(stream).hasVolumeIndexForDevice(device); 97 } 98 99 virtual status_t dump(int fd) const; 100 101 private: 102 void setVolumeCurvePoint(audio_stream_type_t stream, device_category deviceCategory, 103 const VolumeCurvePoint *point); 104 const VolumeCurvePoint *getVolumeCurvePoint(audio_stream_type_t stream, 105 device_category deviceCategory) const; 106 void setVolumeIndexMin(audio_stream_type_t stream,int volIndexMin); 107 void setVolumeIndexMax(audio_stream_type_t stream,int volIndexMax); 108 }; 109 110 }; // namespace android 111