PolicySubsystem.cpp revision 65c3781db3443531deacecfbda5c7e7e82868a34 
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
29using android::audio_policy::EngineInstance;
30
31const char *const PolicySubsystem::mKeyName = "Name";
32const char *const PolicySubsystem::mKeyIdentifier = "Identifier";
33const char *const PolicySubsystem::mKeyCategory = "Category";
34const char *const PolicySubsystem::mKeyAmend1 = "Amend1";
35const char *const PolicySubsystem::mKeyAmend2 = "Amend2";
36const char *const PolicySubsystem::mKeyAmend3 = "Amend3";
37
38
39const char *const PolicySubsystem::mStreamComponentName = "Stream";
40const char *const PolicySubsystem::mStrategyComponentName = "Strategy";
41const char *const PolicySubsystem::mInputSourceComponentName = "InputSource";
42const char *const PolicySubsystem::mUsageComponentName = "Usage";
43const char *const PolicySubsystem::mVolumeProfileComponentName = "VolumeProfile";
44
45PolicySubsystem::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    if (engineInstance == NULL) {
53         ALOG_ASSERT(engineInstance != NULL, "NULL Plugin Interface");
54        return;
55    }
56    // Retrieve the Route Interface
57    mPluginInterface = engineInstance->queryInterface<android::AudioPolicyPluginInterface>();
58    if (mPluginInterface == NULL) {
59        // bailing out
60        ALOG_ASSERT(mPluginInterface != NULL, "NULL Plugin Interface");
61        return;
62    }
63
64    // Provide mapping keys to the core, necessary when parsing the XML Structure files.
65    addContextMappingKey(mKeyName);
66    addContextMappingKey(mKeyCategory);
67    addContextMappingKey(mKeyIdentifier);
68    addContextMappingKey(mKeyAmend1);
69    addContextMappingKey(mKeyAmend2);
70    addContextMappingKey(mKeyAmend3);
71
72    // Provide creators to upper layer
73    addSubsystemObjectFactory(
74        new TSubsystemObjectFactory<Stream>(
75            mStreamComponentName,
76            (1 << MappingKeyAmend1) | (1 << MappingKeyIdentifier))
77        );
78    addSubsystemObjectFactory(
79        new TSubsystemObjectFactory<Strategy>(
80            mStrategyComponentName,
81            (1 << MappingKeyAmend1) | (1 << MappingKeyIdentifier))
82        );
83    addSubsystemObjectFactory(
84        new TSubsystemObjectFactory<Usage>(
85            mUsageComponentName,
86            (1 << MappingKeyAmend1) | (1 << MappingKeyIdentifier))
87        );
88    addSubsystemObjectFactory(
89        new TSubsystemObjectFactory<InputSource>(
90            mInputSourceComponentName,
91            (1 << MappingKeyAmend1) | (1 << MappingKeyIdentifier))
92        );
93    addSubsystemObjectFactory(
94        new TSubsystemObjectFactory<VolumeProfile>(
95            mVolumeProfileComponentName,
96            (1 << MappingKeyAmend1) | (1 << MappingKeyIdentifier) | (1 << MappingKeyIdentifier))
97        );
98}
99
100// Retrieve Route interface
101android::AudioPolicyPluginInterface *PolicySubsystem::getPolicyPluginInterface() const
102{
103    ALOG_ASSERT(mPluginInterface != NULL, "NULL Plugin Interface");
104    return mPluginInterface;
105}
106