1 /*
2 * Copyright (c) 2024-2024 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "camera_common_event_manager.h"
17
18 namespace OHOS {
19 namespace CameraStandard {
20
21 sptr<CameraCommonEventManager> CameraCommonEventManager::instance_ = nullptr;
22 std::mutex CameraCommonEventManager::instanceMutex_;
23 std::mutex CameraCommonEventManager::mapMutex_;
CameraCommonEventManager()24 CameraCommonEventManager::CameraCommonEventManager()
25 {}
26
~CameraCommonEventManager()27 CameraCommonEventManager::~CameraCommonEventManager()
28 {}
29
GetInstance()30 sptr<CameraCommonEventManager> CameraCommonEventManager::GetInstance()
31 {
32 if (instance_ != nullptr) {
33 return instance_;
34 }
35 std::lock_guard<std::mutex> lock(instanceMutex_);
36 if (instance_ != nullptr) {
37 return instance_;
38 }
39 instance_ = new (std::nothrow) CameraCommonEventManager();
40 return instance_;
41 }
42
SubscribeCommonEvent(const std::string & eventName,EventReceiver receiver)43 void CameraCommonEventManager::SubscribeCommonEvent(const std::string &eventName, EventReceiver receiver)
44 {
45 MEDIA_INFO_LOG("SubscribeCommonEvent eventName=%{public}s", eventName.c_str());
46 EventFwk::MatchingSkills matchingSkills;
47 matchingSkills.AddEvent(eventName);
48 EventFwk::CommonEventSubscribeInfo subscribeInfo(matchingSkills);
49 auto subscriberPtr = std::make_shared<CameraCommonEventSubscriber>(subscribeInfo, receiver);
50 if (subscriberPtr == nullptr) {
51 MEDIA_INFO_LOG("subscriberPtr is nullptr");
52 return;
53 }
54 if (EventFwk::CommonEventManager::SubscribeCommonEvent(subscriberPtr)) {
55 MEDIA_INFO_LOG("SubscribeCommonEvent success");
56 {
57 std::lock_guard<std::mutex> lock(mapMutex_);
58 commonEventSubscriberMap_.insert(std::make_pair(eventName, subscriberPtr));
59 }
60 }
61 }
62
UnSubscribeCommonEvent(const std::string & eventName)63 void CameraCommonEventManager::UnSubscribeCommonEvent(const std::string &eventName)
64 {
65 MEDIA_INFO_LOG("UnSubscribeCommonEvent eventName=%{public}s", eventName.c_str());
66 std::lock_guard<std::mutex> lock(mapMutex_);
67 auto subscriber = commonEventSubscriberMap_.find(eventName);
68 if (subscriber == commonEventSubscriberMap_.end()) {
69 MEDIA_INFO_LOG("UnSubscribeCommonEvent event:%{public}s is not subscribed", eventName.c_str());
70 return;
71 }
72 auto commonEventSubscriber = subscriber->second;
73 if (commonEventSubscriber != nullptr) {
74 EventFwk::CommonEventManager::UnSubscribeCommonEvent(commonEventSubscriber);
75 }
76 commonEventSubscriberMap_.erase(subscriber);
77 }
78
CameraCommonEventSubscriber(const EventFwk::CommonEventSubscribeInfo & subscribeInfo,EventReceiver receiver)79 CameraCommonEventManager::CameraCommonEventSubscriber::CameraCommonEventSubscriber(
80 const EventFwk::CommonEventSubscribeInfo &subscribeInfo, EventReceiver receiver)
81 : EventFwk::CommonEventSubscriber(subscribeInfo), eventReceiver_(receiver) {}
82
OnReceiveEvent(const EventFwk::CommonEventData & data)83 void CameraCommonEventManager::CameraCommonEventSubscriber::OnReceiveEvent(const EventFwk::CommonEventData &data)
84 {
85 if (eventReceiver_ == nullptr) {
86 MEDIA_INFO_LOG("eventReceiver_ is nullptr");
87 return;
88 }
89 eventReceiver_(data);
90 }
91
92 } // namespace CameraStandard
93 } // namespace OHOS
94