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 "FormattedSubsystemObject.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 CFormattedSubsystemObject
28 {
29 public:
30     Stream(const std::string &mappingValue,
31              CInstanceConfigurableElement *instanceConfigurableElement,
32              const CMappingContext &context);
33 
34 protected:
35     virtual bool receiveFromHW(std::string &error);
36     virtual bool sendToHW(std::string &error);
37 
38 private:
39     const PolicySubsystem *mPolicySubsystem; /**< Route subsytem plugin. */
40 
41     /**
42      * Interface to communicate with Audio Policy Engine.
43      */
44     android::AudioPolicyPluginInterface *mPolicyPluginInterface;
45 
46     audio_stream_type_t mId; /**< stream type identifier to link with audio.h. */
47     uint32_t mApplicableStrategy; /**< applicable strategy for this stream. */
48     static const uint32_t mDefaultApplicableStrategy = 0; /**< default strategy. */
49 };
50