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 "Stream.h"
18 #include "PolicyMappingKeys.h"
19 #include "PolicySubsystem.h"
20
21 using std::string;
22 using android::routing_strategy;
23
Stream(const string & mappingValue,CInstanceConfigurableElement * instanceConfigurableElement,const CMappingContext & context)24 Stream::Stream(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 mApplicableStrategy(mDefaultApplicableStrategy)
36 {
37 mId = static_cast<audio_stream_type_t>(context.getItemAsInteger(MappingKeyIdentifier));
38
39 // Declares the strategy to audio policy engine
40 mPolicyPluginInterface->addStream(getFormattedMappingValue(), mId);
41 }
42
receiveFromHW(string &)43 bool Stream::receiveFromHW(string & /*error*/)
44 {
45 blackboardWrite(&mApplicableStrategy, sizeof(mApplicableStrategy));
46 return true;
47 }
48
sendToHW(string &)49 bool Stream::sendToHW(string & /*error*/)
50 {
51 uint32_t applicableStrategy;
52 blackboardRead(&applicableStrategy, sizeof(applicableStrategy));
53 mApplicableStrategy = applicableStrategy;
54 return mPolicyPluginInterface->setStrategyForStream(mId,
55 static_cast<routing_strategy>(mApplicableStrategy));
56 }
57