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      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 #pragma once
     18 
     19 #include "SubsystemObject.h"
     20 #include "InstanceConfigurableElement.h"
     21 #include "MappingContext.h"
     22 #include <AudioPolicyPluginInterface.h>
     23 #include <string>
     24 
     25 class PolicySubsystem;
     26 
     27 class Stream : public CSubsystemObject
     28 {
     29 private:
     30     struct Applicable
     31     {
     32         uint32_t strategy; /**< applicable strategy for this stream. */
     33         uint32_t volumeProfile; /**< applicable strategy for this stream. */
     34     } __attribute__((packed));
     35 
     36 public:
     37     Stream(const std::string &mappingValue,
     38            CInstanceConfigurableElement *instanceConfigurableElement,
     39            const CMappingContext &context,
     40            core::log::Logger& logger);
     41 
     42 protected:
     43     virtual bool sendToHW(std::string &error);
     44 
     45 private:
     46     const PolicySubsystem *mPolicySubsystem; /**< Route subsytem plugin. */
     47 
     48     /**
     49      * Interface to communicate with Audio Policy Engine.
     50      */
     51     android::AudioPolicyPluginInterface *mPolicyPluginInterface;
     52     audio_stream_type_t mId; /**< stream type identifier to link with audio.h. */
     53 };
     54