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 "Usage.h"
24 #include <AudioPolicyPluginInterface.h>
25 #include <AudioPolicyEngineInstance.h>
26 #include <utils/Log.h>
27
28 using android::audio_policy::EngineInstance;
29
30 const char *const PolicySubsystem::mKeyName = "Name";
31 const char *const PolicySubsystem::mKeyIdentifier = "Identifier";
32 const char *const PolicySubsystem::mKeyCategory = "Category";
33 const char *const PolicySubsystem::mKeyAmend1 = "Amend1";
34 const char *const PolicySubsystem::mKeyAmend2 = "Amend2";
35 const char *const PolicySubsystem::mKeyAmend3 = "Amend3";
36
37
38 const char *const PolicySubsystem::mStreamComponentName = "Stream";
39 const char *const PolicySubsystem::mStrategyComponentName = "Strategy";
40 const char *const PolicySubsystem::mInputSourceComponentName = "InputSource";
41 const char *const PolicySubsystem::mUsageComponentName = "Usage";
42
PolicySubsystem(const std::string & name,core::log::Logger & logger)43 PolicySubsystem::PolicySubsystem(const std::string &name, core::log::Logger &logger)
44 : CSubsystem(name, logger),
45 mPluginInterface(NULL)
46 {
47 // Try to connect a Plugin Interface from Audio Policy Engine
48 EngineInstance *engineInstance = EngineInstance::getInstance();
49
50 ALOG_ASSERT(engineInstance != NULL, "NULL Plugin Interface");
51
52 // Retrieve the Route Interface
53 mPluginInterface = engineInstance->queryInterface<android::AudioPolicyPluginInterface>();
54 ALOG_ASSERT(mPluginInterface != NULL, "NULL Plugin Interface");
55
56 // Provide mapping keys to the core, necessary when parsing the XML Structure files.
57 addContextMappingKey(mKeyName);
58 addContextMappingKey(mKeyCategory);
59 addContextMappingKey(mKeyIdentifier);
60 addContextMappingKey(mKeyAmend1);
61 addContextMappingKey(mKeyAmend2);
62 addContextMappingKey(mKeyAmend3);
63
64 // Provide creators to upper layer
65 addSubsystemObjectFactory(
66 new TSubsystemObjectFactory<Stream>(
67 mStreamComponentName,
68 (1 << MappingKeyIdentifier))
69 );
70 addSubsystemObjectFactory(
71 new TSubsystemObjectFactory<Strategy>(
72 mStrategyComponentName,
73 (1 << MappingKeyAmend1) | (1 << MappingKeyIdentifier))
74 );
75 addSubsystemObjectFactory(
76 new TSubsystemObjectFactory<Usage>(
77 mUsageComponentName,
78 (1 << MappingKeyAmend1) | (1 << MappingKeyIdentifier))
79 );
80 addSubsystemObjectFactory(
81 new TSubsystemObjectFactory<InputSource>(
82 mInputSourceComponentName,
83 (1 << MappingKeyAmend1) | (1 << MappingKeyIdentifier))
84 );
85 }
86
87 // Retrieve Route interface
getPolicyPluginInterface() const88 android::AudioPolicyPluginInterface *PolicySubsystem::getPolicyPluginInterface() const
89 {
90 ALOG_ASSERT(mPluginInterface != NULL, "NULL Plugin Interface");
91 return mPluginInterface;
92 }
93