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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "Stream.h"
#include "PolicyMappingKeys.h"
#include "PolicySubsystem.h"
using std::string;
using android::routing_strategy;
Stream::Stream(const string &mappingValue,
CInstanceConfigurableElement *instanceConfigurableElement,
const CMappingContext &context)
: CFormattedSubsystemObject(instanceConfigurableElement,
mappingValue,
MappingKeyAmend1,
(MappingKeyAmendEnd - MappingKeyAmend1 + 1),
context),
mPolicySubsystem(static_cast<const PolicySubsystem *>(
instanceConfigurableElement->getBelongingSubsystem())),
mPolicyPluginInterface(mPolicySubsystem->getPolicyPluginInterface()),
mApplicableStrategy(mDefaultApplicableStrategy)
{
mId = static_cast<audio_stream_type_t>(context.getItemAsInteger(MappingKeyIdentifier));
// Declares the strategy to audio policy engine
mPolicyPluginInterface->addStream(getFormattedMappingValue(), mId);
}
bool Stream::receiveFromHW(string & /*error*/)
{
blackboardWrite(&mApplicableStrategy, sizeof(mApplicableStrategy));
return true;
}
bool Stream::sendToHW(string & /*error*/)
{
uint32_t applicableStrategy;
blackboardRead(&applicableStrategy, sizeof(applicableStrategy));
mApplicableStrategy = applicableStrategy;
return mPolicyPluginInterface->setStrategyForStream(mId,
static_cast<routing_strategy>(mApplicableStrategy));
}
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