Home | History | Annotate | Download | only in plugin 
      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 "PolicySubsystem.h"
     18 #include "SubsystemObjectFactory.h"
     19 #include "PolicyMappingKeys.h"
     20 #include "Strategy.h"
     21 #include "Stream.h"
     22 #include "InputSource.h"
     23 #include "VolumeProfile.h"
     24 #include "Usage.h"
     25 #include <AudioPolicyPluginInterface.h>
     26 #include <AudioPolicyEngineInstance.h>
     27 #include <utils/Log.h>
     28 
     29 using android::audio_policy::EngineInstance;
     30 
     31 const char *const PolicySubsystem::mKeyName = "Name";
     32 const char *const PolicySubsystem::mKeyIdentifier = "Identifier";
     33 const char *const PolicySubsystem::mKeyCategory = "Category";
     34 const char *const PolicySubsystem::mKeyAmend1 = "Amend1";
     35 const char *const PolicySubsystem::mKeyAmend2 = "Amend2";
     36 const char *const PolicySubsystem::mKeyAmend3 = "Amend3";
     37 
     38 
     39 const char *const PolicySubsystem::mStreamComponentName = "Stream";
     40 const char *const PolicySubsystem::mStrategyComponentName = "Strategy";
     41 const char *const PolicySubsystem::mInputSourceComponentName = "InputSource";
     42 const char *const PolicySubsystem::mUsageComponentName = "Usage";
     43 const char *const PolicySubsystem::mVolumeProfileComponentName = "VolumeProfile";
     44 
     45 PolicySubsystem::PolicySubsystem(const std::string &name)
     46     : CSubsystem(name),
     47       mPluginInterface(NULL)
     48 {
     49     // Try to connect a Plugin Interface from Audio Policy Engine
     50     EngineInstance *engineInstance = EngineInstance::getInstance();
     51 
     52     ALOG_ASSERT(engineInstance != NULL, "NULL Plugin Interface");
     53 
     54     // Retrieve the Route Interface
     55     mPluginInterface = engineInstance->queryInterface<android::AudioPolicyPluginInterface>();
     56     ALOG_ASSERT(mPluginInterface != NULL, "NULL Plugin Interface");
     57 
     58     // Provide mapping keys to the core, necessary when parsing the XML Structure files.
     59     addContextMappingKey(mKeyName);
     60     addContextMappingKey(mKeyCategory);
     61     addContextMappingKey(mKeyIdentifier);
     62     addContextMappingKey(mKeyAmend1);
     63     addContextMappingKey(mKeyAmend2);
     64     addContextMappingKey(mKeyAmend3);
     65 
     66     // Provide creators to upper layer
     67     addSubsystemObjectFactory(
     68         new TSubsystemObjectFactory<Stream>(
     69             mStreamComponentName,
     70             (1 << MappingKeyAmend1) | (1 << MappingKeyIdentifier))
     71         );
     72     addSubsystemObjectFactory(
     73         new TSubsystemObjectFactory<Strategy>(
     74             mStrategyComponentName,
     75             (1 << MappingKeyAmend1) | (1 << MappingKeyIdentifier))
     76         );
     77     addSubsystemObjectFactory(
     78         new TSubsystemObjectFactory<Usage>(
     79             mUsageComponentName,
     80             (1 << MappingKeyAmend1) | (1 << MappingKeyIdentifier))
     81         );
     82     addSubsystemObjectFactory(
     83         new TSubsystemObjectFactory<InputSource>(
     84             mInputSourceComponentName,
     85             (1 << MappingKeyAmend1) | (1 << MappingKeyIdentifier))
     86         );
     87     addSubsystemObjectFactory(
     88         new TSubsystemObjectFactory<VolumeProfile>(
     89             mVolumeProfileComponentName,
     90             (1 << MappingKeyAmend1) | (1 << MappingKeyIdentifier) | (1 << MappingKeyIdentifier))
     91         );
     92 }
     93 
     94 // Retrieve Route interface
     95 android::AudioPolicyPluginInterface *PolicySubsystem::getPolicyPluginInterface() const
     96 {
     97     ALOG_ASSERT(mPluginInterface != NULL, "NULL Plugin Interface");
     98     return mPluginInterface;
     99 }
    100