1 /*
2 * Copyright (c) 2021 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 "screen_saver_handler.h"
17
18 #include <thread>
19
20 #include <element_name.h>
21 #include <samgr_lite.h>
22 #include <securec.h>
23 #include <want.h>
24
25 #include "hilog_wrapper.h"
26 #include "running_lock_mgr.h"
27
28 static const int32_t DELAY_TIME = 20;
29
30 namespace OHOS {
~ScreenSaverHandler()31 ScreenSaverHandler::~ScreenSaverHandler()
32 {
33 if (timer_ != nullptr) {
34 PowerMgrDestroyTimer(timer_);
35 timer_ = nullptr;
36 }
37 }
38
GetAmsInterface()39 AmsInterface *ScreenSaverHandler::GetAmsInterface()
40 {
41 static struct AmsInterface *ams = nullptr;
42 if (ams != nullptr) {
43 return ams;
44 }
45
46 IUnknown *iUnknown = SAMGR_GetInstance()->GetFeatureApi(AMS_SERVICE, AMS_FEATURE);
47 if (iUnknown == nullptr) {
48 POWER_HILOGE("Failed to get ams iUnknown");
49 return nullptr;
50 }
51
52 int ret = iUnknown->QueryInterface(iUnknown, DEFAULT_VERSION, (void **)&ams);
53 if ((ret != EC_SUCCESS) || (ams == nullptr)) {
54 POWER_HILOGE("Failed to query ams interface");
55 return nullptr;
56 }
57 POWER_HILOGI("Succeed to get ams interface");
58 return ams;
59 }
60
StartScreenSaverLocked()61 bool ScreenSaverHandler::StartScreenSaverLocked()
62 {
63 AmsInterface *ams = GetAmsInterface();
64 if (ams == nullptr) {
65 POWER_HILOGE("Failed to get ams interface");
66 return false;
67 }
68
69 Want want = { nullptr };
70 ElementName element = { nullptr };
71 SetElementBundleName(&element, "com.huawei.screensaver");
72 SetElementAbilityName(&element, "ScreensaverAbility");
73 SetWantElement(&want, element);
74 SetWantData(&want, "WantData", strlen("WantData") + 1);
75 int32_t ret = ams->StartAbility(&want);
76 ClearElement(&element);
77 ClearWant(&want);
78 return ret == EC_SUCCESS;
79 }
80
StartScreenSaver()81 void ScreenSaverHandler::StartScreenSaver()
82 {
83 POWER_HILOGI("Time to start screen saver");
84 std::lock_guard<std::mutex> lock(mutex_);
85 if (!enabled_ || screenSaverStarted_ || (RunningLockMgrIsLockHolding(RUNNINGLOCK_SCREEN) == TRUE)) {
86 return;
87 }
88 screenSaverStarted_ = StartScreenSaverLocked();
89 POWER_HILOGI("Start screen saver: %d", static_cast<int32_t>(screenSaverStarted_));
90 }
91
PowerTimerCallback(void * data)92 void PowerTimerCallback(void *data)
93 {
94 if (data == nullptr) {
95 POWER_HILOGE("Invalid timer data");
96 return;
97 }
98 ScreenSaverHandler *handler = static_cast<ScreenSaverHandler *>(data);
99 handler->StartScreenSaver();
100 }
101
Init()102 void ScreenSaverHandler::Init()
103 {
104 if (timer_ == nullptr) {
105 timer_ = PowerMgrCreateTimer(intervalMsec_, intervalMsec_, PowerTimerCallback);
106 }
107 std::thread lateInit([this] {
108 sleep(DELAY_TIME); // set delay to avoid registing input evnet listener failure
109 SetState(true);
110 });
111 lateInit.detach();
112 }
113
SetInterval(int64_t intervalMsec)114 void ScreenSaverHandler::SetInterval(int64_t intervalMsec)
115 {
116 std::lock_guard<std::mutex> lock(mutex_);
117 if (intervalMsec_ == intervalMsec) {
118 return;
119 }
120 if (timer_ != nullptr) {
121 PowerMgrResetTimer(timer_, intervalMsec, intervalMsec);
122 if (enabled_) {
123 SetEnableLocked();
124 }
125 }
126 intervalMsec_ = intervalMsec;
127 }
128
SetEnableLocked()129 bool ScreenSaverHandler::SetEnableLocked()
130 {
131 if (PowerMgrStartTimer(timer_, (void *)this) == FALSE) {
132 POWER_HILOGE("Failed to start timer");
133 return false;
134 }
135
136 if (!InputEventListenerProxy::GetInstance()->RegisterInputEventListener(this)) {
137 PowerMgrStopTimer(timer_);
138 POWER_HILOGE("Failed to register input event listener");
139 return false;
140 }
141
142 POWER_HILOGI("Succeed to enable screen saver");
143 return true;
144 }
145
SetDisableLocked()146 bool ScreenSaverHandler::SetDisableLocked()
147 {
148 InputEventListenerProxy::GetInstance()->UnregisterInputEventListener();
149
150 PowerMgrStopTimer(timer_);
151 POWER_HILOGI("Succeed to disable screen saver");
152 return true;
153 }
154
SetState(bool enable)155 int32_t ScreenSaverHandler::SetState(bool enable)
156 {
157 std::lock_guard<std::mutex> lock(mutex_);
158 if (timer_ == nullptr) {
159 return EC_FAILURE;
160 }
161 if (enabled_ == enable) {
162 return EC_SUCCESS;
163 }
164 bool ret = enable ? SetEnableLocked() : SetDisableLocked();
165 if (!ret) {
166 POWER_HILOGE("Failed to set state: %d", static_cast<int32_t>(enable));
167 return EC_FAILURE;
168 }
169 enabled_ = enable;
170 return EC_SUCCESS;
171 }
172
OnRawEvent(const RawEvent & event)173 void ScreenSaverHandler::OnRawEvent(const RawEvent &event)
174 {
175 static int64_t lastUpdateTime = 0;
176 std::lock_guard<std::mutex> lock(mutex_);
177 screenSaverStarted_ = false;
178 int64_t currentTime = GetCurrentTimeMsec(CLOCK_MONOTONIC);
179 if ((currentTime - lastUpdateTime) > MSEC_PER_SEC) {
180 PowerMgrRestartTimer(timer_, (void *)this);
181 lastUpdateTime = currentTime;
182 }
183 }
184 } // namespace OHOS
185