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 "FormattedSubsystemObject.h" 20 #include "InstanceConfigurableElement.h" 21 #include "MappingContext.h" 22 #include <Volume.h> 23 #include <AudioPolicyPluginInterface.h> 24 #include <string> 25 26 class PolicySubsystem; 27 28 class VolumeProfile : public CFormattedSubsystemObject 29 { 30 private: 31 struct Point 32 { 33 int index; 34 /** Volume is using FixedPointParameter until float parameters are available. */ 35 int16_t dbAttenuation; 36 } __attribute__((packed)); 37 38 public: 39 VolumeProfile(const std::string &mappingValue, 40 CInstanceConfigurableElement *instanceConfigurableElement, 41 const CMappingContext &context); 42 43 protected: 44 virtual bool receiveFromHW(std::string &error); 45 virtual bool sendToHW(std::string &error); 46 47 private: 48 const PolicySubsystem *mPolicySubsystem; /**< Route subsytem plugin. */ 49 50 /** 51 * Interface to communicate with Audio Policy Engine. 52 */ 53 android::AudioPolicyPluginInterface *mPolicyPluginInterface; 54 55 /** 56 * volume profile identifier, which is in fact a stream type to link with audio.h. 57 */ 58 audio_stream_type_t mId; 59 60 size_t mPoints; 61 Volume::device_category mCategory; 62 63 static const uint32_t gFractional = 8; /**< Beware to align with the structure. */ 64 }; 65