1 /*
2 * Copyright (c) 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 "egl_wrapper_loader.h"
17
18 #include <dlfcn.h>
19 #include <string>
20
21 #include "directory_ex.h"
22
23 #include "egl_defs.h"
24 #include "../wrapper_log.h"
25
26 using namespace OHOS;
27 namespace OHOS {
28 namespace {
29 #ifdef __aarch64__
30 constexpr const char *VENDOR_LIB_PATH = "/vendor/lib64/chipsetsdk/";
31 constexpr const char *SYSTEM_LIB_PATH = "/system/lib64/";
32 #else
33 constexpr const char *VENDOR_LIB_PATH = "/vendor/lib/chipsetsdk/";
34 constexpr const char *SYSTEM_LIB_PATH = "/system/lib/";
35 #endif
36 constexpr const char *LIB_EGL_NAME = "libEGL_impl.so";
37 constexpr const char *LIB_GLESV1_NAME = "libGLESv1_impl.so";
38 constexpr const char *LIB_GLESV2_NAME = "libGLESv2_impl.so";
39 constexpr const char *LIB_GLESV3_NAME = "libGLESv3_impl.so";
40 }
41
GetInstance()42 EglWrapperLoader& EglWrapperLoader::GetInstance()
43 {
44 static EglWrapperLoader loader;
45 return loader;
46 }
47
~EglWrapperLoader()48 EglWrapperLoader::~EglWrapperLoader()
49 {
50 WLOGD("");
51 }
52
53 using GetProcAddressType = FunctionPointerType (*)(const char *);
LoadEgl(const char * libName,EglHookTable * table)54 bool EglWrapperLoader::LoadEgl(const char *libName, EglHookTable *table)
55 {
56 WLOGD("");
57 std::string path = std::string(VENDOR_LIB_PATH) + std::string(libName);
58 dlEglHandle_ = dlopen(path.c_str(), RTLD_NOW | RTLD_LOCAL);
59 if (dlEglHandle_ == nullptr) {
60 path = std::string(SYSTEM_LIB_PATH) + std::string(libName);
61 std::string realPath;
62 if (!PathToRealPath(path, realPath)) {
63 WLOGE("file is not real path, file path: %{private}s", path.c_str());
64 return false;
65 }
66 dlEglHandle_ = dlopen(realPath.c_str(), RTLD_NOW | RTLD_LOCAL);
67 if (dlEglHandle_ == nullptr) {
68 WLOGE("dlopen failed. error: %{public}s.", dlerror());
69 return false;
70 }
71 }
72
73 GetProcAddressType getProcAddr =
74 (GetProcAddressType)dlsym(dlEglHandle_, "eglGetProcAddress");
75 if (getProcAddr == nullptr) {
76 WLOGE("can't find eglGetProcAddress() in EGL driver library.");
77 return false;
78 }
79
80 FunctionPointerType *current = (FunctionPointerType *)table;
81 char const * const *api = gEglApiNames;
82 while (*api) {
83 char const *name = *api;
84 FunctionPointerType func = (FunctionPointerType)dlsym(dlEglHandle_, name);
85 if (func == nullptr) {
86 WLOGD("try to getProcAddr %{public}s.", name);
87 func = getProcAddr(name);
88 if (func == nullptr) {
89 WLOGD("couldn't find the entry-point: %{public}s.", name);
90 }
91 }
92
93 *current++ = func;
94 api++;
95 }
96
97 return true;
98 }
99
LoadGl(const char * libName,char const * const * glName,FunctionPointerType * entry)100 void *EglWrapperLoader::LoadGl(const char *libName, char const * const *glName, FunctionPointerType *entry)
101 {
102 WLOGD("");
103 std::string path = std::string(VENDOR_LIB_PATH) + std::string(libName);
104 void *dlHandle = dlopen(path.c_str(), RTLD_NOW | RTLD_LOCAL);
105 if (dlHandle == nullptr) {
106 path = std::string(SYSTEM_LIB_PATH) + std::string(libName);
107 std::string realPath;
108 if (!PathToRealPath(path, realPath)) {
109 WLOGE("file is not real path, file path: %{private}s", path.c_str());
110 return nullptr;
111 }
112 dlHandle = dlopen(realPath.c_str(), RTLD_NOW | RTLD_LOCAL);
113 if (dlHandle == nullptr) {
114 WLOGE("dlopen failed. error: %{public}s.", dlerror());
115 return nullptr;
116 }
117 }
118
119 GetProcAddressType getProcAddr =
120 (GetProcAddressType)dlsym(dlEglHandle_, "eglGetProcAddress");
121 if (getProcAddr == nullptr) {
122 WLOGE("can't find eglGetProcAddress() in EGL driver library.");
123 return nullptr;
124 }
125
126 FunctionPointerType *current = entry;
127 char const * const *api = glName;
128 while (*api) {
129 char const *name = *api;
130 FunctionPointerType func = (FunctionPointerType)dlsym(dlHandle, name);
131 if (func == nullptr) {
132 WLOGD("try to getProcAddr %{public}s.", name);
133 func = getProcAddr(name);
134 if (func == nullptr) {
135 WLOGD("couldn't find the entry-point: %{public}s.", name);
136 }
137 }
138 *current++ = func;
139 api++;
140 }
141
142 return dlHandle;
143 }
144
LoadVendorDriver(EglWrapperDispatchTable * table)145 bool EglWrapperLoader::LoadVendorDriver(EglWrapperDispatchTable *table)
146 {
147 WLOGD("EGL");
148 if (!LoadEgl(LIB_EGL_NAME, &table->egl)) {
149 WLOGE("LoadEgl Failed.");
150 return false;
151 }
152
153 WLOGD("GLESV1");
154 dlGlHandle1_ = LoadGl(LIB_GLESV1_NAME, gGlApiNames1, (FunctionPointerType *)&table->gl.table1);
155 if (!dlEglHandle_) {
156 WLOGE("LoadGl GLESV1 Failed.");
157 return false;
158 }
159
160 WLOGD("GLESV2");
161 dlGlHandle2_ = LoadGl(LIB_GLESV2_NAME, gGlApiNames2, (FunctionPointerType *)&table->gl.table2);
162 if (!dlGlHandle2_) {
163 WLOGE("LoadGl GLESV2 Failed.");
164 return false;
165 }
166
167 WLOGD("GLESV3");
168 dlGlHandle3_ = LoadGl(LIB_GLESV3_NAME, gGlApiNames3, (FunctionPointerType *)&table->gl.table3);
169 if (!dlGlHandle3_) {
170 WLOGE("LoadGl GLESV3 Failed.");
171 return false;
172 }
173
174 return true;
175 }
176
Load(EglWrapperDispatchTable * table)177 bool EglWrapperLoader::Load(EglWrapperDispatchTable *table)
178 {
179 WLOGD("");
180 if (table == nullptr) {
181 WLOGE("table is nullptr.");
182 return false;
183 }
184
185 if (table->isLoad) {
186 WLOGI("EglWrapperLoader has been already loaded.");
187 return true;
188 }
189
190 if (!LoadVendorDriver(table)) {
191 WLOGE("LoadVendorDriver Failed.");
192 return false;
193 }
194
195 table->isLoad = true;
196 return true;
197 }
198
Unload(EglWrapperDispatchTable * table)199 bool EglWrapperLoader::Unload(EglWrapperDispatchTable *table)
200 {
201 WLOGD("");
202 if (table == nullptr) {
203 WLOGE("table is nullptr.");
204 return false;
205 }
206 if (!table->isLoad) {
207 WLOGE("EglWrapperLoader is not loaded.");
208 return false;
209 }
210
211 table->isLoad = false;
212
213 if (dlEglHandle_) {
214 dlclose(dlEglHandle_);
215 dlEglHandle_ = nullptr;
216 }
217 if (dlGlHandle1_) {
218 dlclose(dlGlHandle1_);
219 dlGlHandle1_ = nullptr;
220 }
221 if (dlGlHandle2_) {
222 dlclose(dlGlHandle2_);
223 dlGlHandle2_ = nullptr;
224 }
225 if (dlGlHandle3_) {
226 dlclose(dlGlHandle3_);
227 dlGlHandle3_ = nullptr;
228 }
229
230 return true;
231 }
232
GetProcAddrFromDriver(const char * name)233 void *EglWrapperLoader::GetProcAddrFromDriver(const char *name)
234 {
235 void *func = nullptr;
236
237 if (dlEglHandle_) {
238 func = dlsym(dlEglHandle_, name);
239 }
240
241 if (!func && dlGlHandle3_) {
242 func = dlsym(dlGlHandle3_, name);
243 }
244
245 if (!func && dlGlHandle2_) {
246 func = dlsym(dlGlHandle2_, name);
247 }
248
249 if (!func && dlGlHandle1_) {
250 func = dlsym(dlGlHandle1_, name);
251 }
252
253 return func;
254 }
255 } // namespace OHOS
256