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 #include "Strategy.h" 18 #include "PolicyMappingKeys.h" 19 #include "PolicySubsystem.h" 20 21 using std::string; 22 using android::routing_strategy; 23 24 Strategy::Strategy(const string &mappingValue, 25 CInstanceConfigurableElement *instanceConfigurableElement, 26 const CMappingContext &context) 27 : CFormattedSubsystemObject(instanceConfigurableElement, 28 mappingValue, 29 MappingKeyAmend1, 30 (MappingKeyAmendEnd - MappingKeyAmend1 + 1), 31 context), 32 mPolicySubsystem(static_cast<const PolicySubsystem *>( 33 instanceConfigurableElement->getBelongingSubsystem())), 34 mPolicyPluginInterface(mPolicySubsystem->getPolicyPluginInterface()), 35 mApplicableOutputDevice(mDefaultApplicableOutputDevice) 36 { 37 mId = static_cast<routing_strategy>(context.getItemAsInteger(MappingKeyIdentifier)); 38 39 // Declares the strategy to audio policy engine 40 mPolicyPluginInterface->addStrategy(getFormattedMappingValue(), mId); 41 } 42 43 bool Strategy::receiveFromHW(string & /*error*/) 44 { 45 blackboardWrite(&mApplicableOutputDevice, sizeof(mApplicableOutputDevice)); 46 return true; 47 } 48 49 bool Strategy::sendToHW(string & /*error*/) 50 { 51 uint32_t applicableOutputDevice; 52 blackboardRead(&applicableOutputDevice, sizeof(applicableOutputDevice)); 53 return mPolicyPluginInterface->setDeviceForStrategy(mId, applicableOutputDevice); 54 } 55
