1 /*
2 * Copyright (c) 2021-2022 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 "dcamera_sink_handler_ipc.h"
17
18 #include <cstdint>
19 #include <new>
20
21 #include "distributed_camera_constants.h"
22 #include "distributed_hardware_log.h"
23 #include "if_system_ability_manager.h"
24 #include "iservice_registry.h"
25 #include "iremote_broker.h"
26
27 namespace OHOS {
28 namespace DistributedHardware {
DCameraSinkHandlerIpc()29 DCameraSinkHandlerIpc::DCameraSinkHandlerIpc() : isInit_(false)
30 {
31 DHLOGI("DCameraSinkHandlerIpc Create");
32 }
33
~DCameraSinkHandlerIpc()34 DCameraSinkHandlerIpc::~DCameraSinkHandlerIpc()
35 {
36 DHLOGI("DCameraSinkHandlerIpc Delete");
37 UnInit();
38 }
39
40 IMPLEMENT_SINGLE_INSTANCE(DCameraSinkHandlerIpc);
41
Init()42 void DCameraSinkHandlerIpc::Init()
43 {
44 std::lock_guard<std::mutex> autoLock(initCamSrvLock_);
45 DHLOGI("DCameraSinkHandlerIpc Init Start");
46 if (isInit_) {
47 DHLOGI("DCameraSinkHandlerIpc has already init");
48 return;
49 }
50 sinkLocalRecipient_ = new SinkLocalRecipient();
51 isInit_ = true;
52 DHLOGI("DCameraSinkHandlerIpc Init End");
53 }
54
UnInit()55 void DCameraSinkHandlerIpc::UnInit()
56 {
57 std::lock_guard<std::mutex> autoLock(initCamSrvLock_);
58 DHLOGI("DCameraSinkHandlerIpc UnInit Start");
59 if (!isInit_) {
60 DHLOGI("DCameraSinkHandlerIpc has already UnInit");
61 return;
62 }
63 DeleteSinkLocalCamSrv();
64 DHLOGI("DCameraSinkHandlerIpc Start free recipient");
65 sinkLocalRecipient_ = nullptr;
66 isInit_ = false;
67 DHLOGI("DCameraSinkHandlerIpc UnInit End");
68 }
69
GetSinkLocalCamSrv()70 sptr<IDistributedCameraSink> DCameraSinkHandlerIpc::GetSinkLocalCamSrv()
71 {
72 {
73 std::lock_guard<std::mutex> autoLock(sinkLocalCamSrvLock_);
74 if (localSink_ != nullptr) {
75 DHLOGI("DCameraSinkHandlerIpc GetSinkLocalCamSrv from cache");
76 return localSink_;
77 }
78 }
79 DHLOGI("GetSinkLocalCamSrv Start");
80 sptr<ISystemAbilityManager> sm = SystemAbilityManagerClient::GetInstance().GetSystemAbilityManager();
81 if (sm == nullptr) {
82 DHLOGE("GetSinkLocalCamSrv GetSystemAbilityManager failed");
83 return nullptr;
84 }
85
86 sptr<IRemoteObject> object = sm->GetSystemAbility(DISTRIBUTED_HARDWARE_CAMERA_SINK_SA_ID);
87 if (object == nullptr) {
88 DHLOGE("GetSinkLocalCamSrv GetSystemAbility failed");
89 return nullptr;
90 }
91 int32_t ret = object->AddDeathRecipient(sinkLocalRecipient_);
92 sptr<IDistributedCameraSink> localSink = iface_cast<IDistributedCameraSink>(object);
93 if (localSink == nullptr) {
94 DHLOGI("GetSinkLocalCamSrv failed, localSink is null ret: %d", ret);
95 return nullptr;
96 }
97 {
98 std::lock_guard<std::mutex> autoLock(sinkLocalCamSrvLock_);
99 if (localSink_ != nullptr) {
100 localSink_->AsObject()->RemoveDeathRecipient(sinkLocalRecipient_);
101 }
102 localSink_ = localSink;
103 }
104 DHLOGI("GetSinkLocalCamSrv success, AddDeathRecipient ret: %d", ret);
105 return localSink;
106 }
107
DeleteSinkLocalCamSrv()108 void DCameraSinkHandlerIpc::DeleteSinkLocalCamSrv()
109 {
110 DHLOGI("DeleteSinkLocalCamSrv start");
111 std::lock_guard<std::mutex> autoLock(sinkLocalCamSrvLock_);
112 if (localSink_ != nullptr) {
113 localSink_->AsObject()->RemoveDeathRecipient(sinkLocalRecipient_);
114 }
115 localSink_ = nullptr;
116 DHLOGI("DeleteSinkLocalCamSrv end");
117 }
118
OnRemoteDied(const wptr<IRemoteObject> & remote)119 void DCameraSinkHandlerIpc::SinkLocalRecipient::OnRemoteDied(const wptr<IRemoteObject>& remote)
120 {
121 DHLOGI("SinkLocalRecipient OnRemoteDied received died notify!");
122 DCameraSinkHandlerIpc::GetInstance().OnSinkLocalCamSrvDied(remote);
123 }
124
OnSinkLocalCamSrvDied(const wptr<IRemoteObject> & remote)125 void DCameraSinkHandlerIpc::OnSinkLocalCamSrvDied(const wptr<IRemoteObject>& remote)
126 {
127 DHLOGI("OnSinkLocalCamSrvDied delete diedRemoted");
128 std::lock_guard<std::mutex> autoLock(sinkLocalCamSrvLock_);
129 if (localSink_ == nullptr) {
130 DHLOGE("DCameraSinkHandlerIpc::OnSinkLocalCamSrvDied, localSink is null.");
131 return;
132 }
133 sptr<IRemoteObject> diedRemoted = remote.promote();
134 if (diedRemoted == nullptr) {
135 DHLOGE("OnSinkLocalCamSrvDied promote failed!");
136 return;
137 }
138 if (localSink_->AsObject() != diedRemoted) {
139 DHLOGI("OnSinkLocalCamSrvDied not found remote object.");
140 return;
141 }
142
143 DHLOGI("OnSinkLocalCamSrvDied Clear");
144 localSink_->AsObject()->RemoveDeathRecipient(sinkLocalRecipient_);
145 localSink_ = nullptr;
146 }
147 } // namespace DistributedHardware
148 } // namespace OHOS
149