1 /*
2 * Copyright (c) 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 "screen_sensor_plugin.h"
17
18 namespace OHOS {
19 namespace Rosen {
20 namespace {
21 constexpr uint32_t SLEEP_TIME_US = 10000;
22 }
23
24 static void *g_handle = nullptr;
25
LoadMotionSensor(void)26 bool LoadMotionSensor(void)
27 {
28 if (g_handle != nullptr) {
29 TLOGW(WmsLogTag::DMS, "motion plugin has already exits.");
30 return true;
31 }
32 int32_t cnt = 0;
33 int32_t retryTimes = 3;
34 do {
35 cnt++;
36 g_handle = dlopen(PLUGIN_SO_PATH.c_str(), RTLD_LAZY);
37 TLOGI(WmsLogTag::DMS, "dlopen %{public}s, retry cnt: %{public}d", PLUGIN_SO_PATH.c_str(), cnt);
38 usleep(SLEEP_TIME_US);
39 } while (!g_handle && cnt < retryTimes);
40 return g_handle != nullptr;
41 }
42
UnloadMotionSensor(void)43 void UnloadMotionSensor(void)
44 {
45 TLOGI(WmsLogTag::DMS, "unload motion plugin.");
46 if (g_handle != nullptr) {
47 dlclose(g_handle);
48 g_handle = nullptr;
49 }
50 }
51
SubscribeCallback(int32_t motionType,OnMotionChangedPtr callback)52 __attribute__((no_sanitize("cfi"))) bool SubscribeCallback(int32_t motionType, OnMotionChangedPtr callback)
53 {
54 if (callback == nullptr) {
55 TLOGE(WmsLogTag::DMS, "callback is nullptr");
56 return false;
57 }
58 if (g_handle == nullptr) {
59 TLOGE(WmsLogTag::DMS, "g_handle is nullptr");
60 return false;
61 }
62 MotionSubscribeCallbackPtr func = (MotionSubscribeCallbackPtr)(dlsym(g_handle, "MotionSubscribeCallback"));
63 const char* dlsymError = dlerror();
64 if (dlsymError) {
65 TLOGE(WmsLogTag::DMS, "dlsym error: %{public}s", dlsymError);
66 return false;
67 }
68 return func(motionType, callback);
69 }
70
UnsubscribeCallback(int32_t motionType,OnMotionChangedPtr callback)71 __attribute__((no_sanitize("cfi"))) bool UnsubscribeCallback(int32_t motionType, OnMotionChangedPtr callback)
72 {
73 if (callback == nullptr) {
74 TLOGE(WmsLogTag::DMS, "callback is nullptr");
75 return false;
76 }
77 if (g_handle == nullptr) {
78 TLOGE(WmsLogTag::DMS, "g_handle is nullptr");
79 return false;
80 }
81 MotionUnsubscribeCallbackPtr func =
82 (MotionUnsubscribeCallbackPtr)(dlsym(g_handle, "MotionUnsubscribeCallback"));
83 const char* dlsymError = dlerror();
84 if (dlsymError) {
85 TLOGE(WmsLogTag::DMS, "dlsym error: %{public}s", dlsymError);
86 return false;
87 }
88 return func(motionType, callback);
89 }
90 }
91 }