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 
Strategy(const string & mappingValue,CInstanceConfigurableElement * instanceConfigurableElement,const CMappingContext & context,core::log::Logger & logger)24 Strategy::Strategy(const string &mappingValue,
25                    CInstanceConfigurableElement *instanceConfigurableElement,
26                    const CMappingContext &context,
27                    core::log::Logger& logger)
28     : CFormattedSubsystemObject(instanceConfigurableElement,
29                                 logger,
30                                 mappingValue,
31                                 MappingKeyAmend1,
32                                 (MappingKeyAmendEnd - MappingKeyAmend1 + 1),
33                                 context),
34       mPolicySubsystem(static_cast<const PolicySubsystem *>(
35                            instanceConfigurableElement->getBelongingSubsystem())),
36       mPolicyPluginInterface(mPolicySubsystem->getPolicyPluginInterface())
37 {
38     mId = static_cast<routing_strategy>(context.getItemAsInteger(MappingKeyIdentifier));
39 
40     // Declares the strategy to audio policy engine
41     mPolicyPluginInterface->addStrategy(getFormattedMappingValue(), mId);
42 }
43 
sendToHW(string &)44 bool Strategy::sendToHW(string & /*error*/)
45 {
46     uint32_t applicableOutputDevice;
47     blackboardRead(&applicableOutputDevice, sizeof(applicableOutputDevice));
48     return mPolicyPluginInterface->setDeviceForStrategy(mId, applicableOutputDevice);
49 }
50