InputSource.cpp revision 65c3781db3443531deacecfbda5c7e7e82868a34 
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 "InputSource.h"
18#include "PolicyMappingKeys.h"
19#include "PolicySubsystem.h"
20
21using std::string;
22
23InputSource::InputSource(const string &mappingValue,
24                   CInstanceConfigurableElement *instanceConfigurableElement,
25                   const CMappingContext &context)
26    : CFormattedSubsystemObject(instanceConfigurableElement,
27                                mappingValue,
28                                MappingKeyAmend1,
29                                (MappingKeyAmendEnd - MappingKeyAmend1 + 1),
30                                context),
31      mPolicySubsystem(static_cast<const PolicySubsystem *>(
32                           instanceConfigurableElement->getBelongingSubsystem())),
33      mPolicyPluginInterface(mPolicySubsystem->getPolicyPluginInterface()),
34      mApplicableInputDevice(mDefaultApplicableInputDevice)
35{
36    mId = static_cast<audio_source_t>(context.getItemAsInteger(MappingKeyIdentifier));
37    // Declares the strategy to audio policy engine
38    mPolicyPluginInterface->addInputSource(getFormattedMappingValue(), mId);
39}
40
41bool InputSource::receiveFromHW(string & /*error*/)
42{
43    blackboardWrite(&mApplicableInputDevice, sizeof(mApplicableInputDevice));
44    return true;
45}
46
47bool InputSource::sendToHW(string & /*error*/)
48{
49    uint32_t applicableInputDevice;
50    blackboardRead(&applicableInputDevice, sizeof(applicableInputDevice));
51    mApplicableInputDevice = applicableInputDevice;
52    return mPolicyPluginInterface->setDeviceForInputSource(mId, mApplicableInputDevice);
53}
54