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 volumeProfile; /**< applicable strategy for this stream. */
33     } __attribute__((packed));
34 
35 public:
36     Stream(const std::string &mappingValue,
37            CInstanceConfigurableElement *instanceConfigurableElement,
38            const CMappingContext &context,
39            core::log::Logger& logger);
40 
41 protected:
42     virtual bool sendToHW(std::string &error);
43 
44 private:
45     const PolicySubsystem *mPolicySubsystem; /**< Route subsytem plugin. */
46 
47     /**
48      * Interface to communicate with Audio Policy Engine.
49      */
50     android::AudioPolicyPluginInterface *mPolicyPluginInterface;
51     audio_stream_type_t mId; /**< stream type identifier to link with audio.h. */
52 };
53