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 "core/common/stylus/stylus_detector_loader.h"
17
18 #include <dlfcn.h>
19 #include <memory>
20
21 #include "frameworks/base/log/log_wrapper.h"
22
23 namespace OHOS::Ace {
24 namespace {
25 #if (defined(__aarch64__) || defined(__x86_64__))
26 const std::string STYLUS_CLIENT_SO_PATH = "/system/lib64/libstylus_innerapi.z.so";
27 #else
28 const std::string STYLUS_CLIENT_SO_PATH = "/system/lib/libstylus_innerapi.z.so";
29 #endif
30 } // namespace
Load()31 std::shared_ptr<StylusDetectorLoader> StylusDetectorLoader::Load()
32 {
33 auto engLib(std::make_shared<StylusDetectorLoader>());
34 auto ret = engLib->Init();
35 if (!ret) {
36 LOGD("Stylus detector loader instance init failed.");
37 return nullptr;
38 }
39 return engLib;
40 }
41
~StylusDetectorLoader()42 StylusDetectorLoader::~StylusDetectorLoader()
43 {
44 Close();
45 }
46
Init()47 bool StylusDetectorLoader::Init()
48 {
49 if (stylusSoLoaded_ && libraryHandle_ != nullptr && createStylusDetectorInstance_ != nullptr &&
50 destroyStylusDetectorInstance_ != nullptr) {
51 return true;
52 }
53 libraryHandle_ = dlopen(STYLUS_CLIENT_SO_PATH.c_str(), RTLD_LAZY);
54 if (libraryHandle_ == nullptr) {
55 return false;
56 }
57 createStylusDetectorInstance_ =
58 (StylusDetectorInterface* (*)()) dlsym(libraryHandle_, "CreateStylusDetectorInstance");
59 destroyStylusDetectorInstance_ =
60 (void (*)(StylusDetectorInterface*))dlsym(libraryHandle_, "DestroyStylusDetectorInstance");
61 if (createStylusDetectorInstance_ == nullptr || destroyStylusDetectorInstance_ == nullptr) {
62 TAG_LOGI(AceLogTag::ACE_STYLUS, "Stylus detector loader instance loading failed.");
63 Close();
64 return false;
65 }
66 stylusSoLoaded_ = true;
67 return true;
68 }
69
CreateStylusDetector()70 StylusDetectorInstance StylusDetectorLoader::CreateStylusDetector()
71 {
72 if (!createStylusDetectorInstance_ || !destroyStylusDetectorInstance_) {
73 return nullptr;
74 }
75
76 return { createStylusDetectorInstance_(), [lib = shared_from_this(), destroy = destroyStylusDetectorInstance_](
77 StylusDetectorInterface* e) { destroy(e); } };
78 }
79
Close()80 void StylusDetectorLoader::Close()
81 {
82 if (libraryHandle_ != nullptr) {
83 dlclose(libraryHandle_);
84 }
85 stylusSoLoaded_ = false;
86 libraryHandle_ = nullptr;
87 createStylusDetectorInstance_ = nullptr;
88 destroyStylusDetectorInstance_ = nullptr;
89 }
90
91 } // namespace OHOS::Ace