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 <Volume.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); 41 42 void dump(int fd) const; 43 44 void setVolumeCurvePoint(Volume::device_category deviceCategory, const VolumeCurvePoint *point); getVolumeCurvePoint(Volume::device_category deviceCategory)45 const VolumeCurvePoint *getVolumeCurvePoint(Volume::device_category deviceCategory) const 46 { 47 return mVolumeCurve[deviceCategory]; 48 } 49 50 private: 51 const VolumeCurvePoint *mVolumeCurve[Volume::DEVICE_CATEGORY_CNT]; 52 KeyedVector<audio_devices_t, int> mIndexCur; /**< current volume index per device. */ 53 int mIndexMin; /**< min volume index. */ 54 int mIndexMax; /**< max volume index. */ 55 bool mCanBeMuted; /**< true is the stream can be muted. */ 56 }; 57 58 /** 59 * stream descriptors collection for volume control 60 */ 61 class StreamDescriptorCollection : public DefaultKeyedVector<audio_stream_type_t, StreamDescriptor> 62 { 63 public: 64 StreamDescriptorCollection(); 65 66 void clearCurrentVolumeIndex(audio_stream_type_t stream); 67 void addCurrentVolumeIndex(audio_stream_type_t stream, audio_devices_t device, int index); 68 69 bool canBeMuted(audio_stream_type_t stream); 70 71 status_t dump(int fd) const; 72 73 void setVolumeCurvePoint(audio_stream_type_t stream, 74 Volume::device_category deviceCategory, 75 const VolumeCurvePoint *point); 76 77 const VolumeCurvePoint *getVolumeCurvePoint(audio_stream_type_t stream, 78 Volume::device_category deviceCategory) const; 79 80 void setVolumeIndexMin(audio_stream_type_t stream,int volIndexMin); 81 void setVolumeIndexMax(audio_stream_type_t stream,int volIndexMax); 82 83 }; 84 85 }; // namespace android 86