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 <EngineConfig.h> 20 #include <AudioPolicyManagerInterface.h> 21 #include <ProductStrategy.h> 22 #include <VolumeGroup.h> 23 24 namespace android { 25 namespace audio_policy { 26 27 class EngineBase : public AudioPolicyManagerInterface 28 { 29 public: 30 /// 31 /// from AudioPolicyManagerInterface 32 /// 33 android::status_t initCheck() override; 34 35 void setObserver(AudioPolicyManagerObserver *observer) override; 36 37 status_t setPhoneState(audio_mode_t mode) override; 38 getPhoneState()39 audio_mode_t getPhoneState() const override { return mPhoneState; } 40 setForceUse(audio_policy_force_use_t usage,audio_policy_forced_cfg_t config)41 status_t setForceUse(audio_policy_force_use_t usage, audio_policy_forced_cfg_t config) override 42 { 43 mForceUse[usage] = config; 44 return NO_ERROR; 45 } 46 getForceUse(audio_policy_force_use_t usage)47 audio_policy_forced_cfg_t getForceUse(audio_policy_force_use_t usage) const override 48 { 49 return mForceUse[usage]; 50 } setDeviceConnectionState(const sp<DeviceDescriptor>,audio_policy_dev_state_t)51 android::status_t setDeviceConnectionState(const sp<DeviceDescriptor> /*devDesc*/, 52 audio_policy_dev_state_t /*state*/) override 53 { 54 return NO_ERROR; 55 } 56 product_strategy_t getProductStrategyForAttributes( 57 const audio_attributes_t &attr) const override; 58 59 audio_stream_type_t getStreamTypeForAttributes(const audio_attributes_t &attr) const override; 60 61 audio_attributes_t getAttributesForStreamType(audio_stream_type_t stream) const override; 62 63 StreamTypeVector getStreamTypesForProductStrategy(product_strategy_t ps) const override; 64 65 AttributesVector getAllAttributesForProductStrategy(product_strategy_t ps) const override; 66 67 StrategyVector getOrderedProductStrategies() const override; 68 69 status_t listAudioProductStrategies(AudioProductStrategyVector &strategies) const override; 70 71 VolumeCurves *getVolumeCurvesForAttributes(const audio_attributes_t &attr) const override; 72 73 VolumeCurves *getVolumeCurvesForStreamType(audio_stream_type_t stream) const override; 74 getVolumeCurvesForVolumeGroup(volume_group_t group)75 IVolumeCurves *getVolumeCurvesForVolumeGroup(volume_group_t group) const override 76 { 77 return mVolumeGroups.find(group) != end(mVolumeGroups) ? 78 mVolumeGroups.at(group)->getVolumeCurves() : nullptr; 79 } 80 81 VolumeGroupVector getVolumeGroups() const override; 82 83 volume_group_t getVolumeGroupForAttributes(const audio_attributes_t &attr) const override; 84 85 volume_group_t getVolumeGroupForStreamType(audio_stream_type_t stream) const override; 86 87 status_t listAudioVolumeGroups(AudioVolumeGroupVector &groups) const override; 88 89 void dump(String8 *dst) const override; 90 91 92 engineConfig::ParsingResult loadAudioPolicyEngineConfig(); 93 getProductStrategies()94 const ProductStrategyMap &getProductStrategies() const { return mProductStrategies; } 95 getProductStrategies()96 ProductStrategyMap &getProductStrategies() { return mProductStrategies; } 97 98 product_strategy_t getProductStrategyForStream(audio_stream_type_t stream) const; 99 100 product_strategy_t getProductStrategyByName(const std::string &name) const; 101 getApmObserver()102 AudioPolicyManagerObserver *getApmObserver() const { return mApmObserver; } 103 isInCall()104 inline bool isInCall() const 105 { 106 return is_state_in_call(getPhoneState()); 107 } 108 toVolumeSource(audio_stream_type_t stream)109 VolumeSource toVolumeSource(audio_stream_type_t stream) const 110 { 111 return static_cast<VolumeSource>(getVolumeGroupForStreamType(stream)); 112 } 113 114 status_t switchVolumeCurve(audio_stream_type_t streamSrc, audio_stream_type_t streamDst); 115 116 status_t restoreOriginVolumeCurve(audio_stream_type_t stream); 117 118 private: 119 AudioPolicyManagerObserver *mApmObserver = nullptr; 120 121 ProductStrategyMap mProductStrategies; 122 VolumeGroupMap mVolumeGroups; 123 audio_mode_t mPhoneState = AUDIO_MODE_NORMAL; /**< current phone state. */ 124 125 /** current forced use configuration. */ 126 audio_policy_forced_cfg_t mForceUse[AUDIO_POLICY_FORCE_USE_CNT] = {}; 127 }; 128 129 } // namespace audio_policy 130 } // namespace android 131