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
28using android::audio_policy::EngineInstance;
29
30const char *const PolicySubsystem::mKeyName = "Name";
31const char *const PolicySubsystem::mKeyIdentifier = "Identifier";
32const char *const PolicySubsystem::mKeyCategory = "Category";
33const char *const PolicySubsystem::mKeyAmend1 = "Amend1";
34const char *const PolicySubsystem::mKeyAmend2 = "Amend2";
35const char *const PolicySubsystem::mKeyAmend3 = "Amend3";
36
37
38const char *const PolicySubsystem::mStreamComponentName = "Stream";
39const char *const PolicySubsystem::mStrategyComponentName = "Strategy";
40const char *const PolicySubsystem::mInputSourceComponentName = "InputSource";
41const char *const PolicySubsystem::mUsageComponentName = "Usage";
42
43PolicySubsystem::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
88android::AudioPolicyPluginInterface *PolicySubsystem::getPolicyPluginInterface() const
89{
90    ALOG_ASSERT(mPluginInterface != NULL, "NULL Plugin Interface");
91    return mPluginInterface;
92}
93