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 constexpr const char *LIB_EGL_NAME = "libEGL_impl.so";
30 constexpr const char *LIB_GLESV1_NAME = "libGLESv1_impl.so";
31 constexpr const char *LIB_GLESV2_NAME = "libGLESv2_impl.so";
32 constexpr const char *LIB_GLESV3_NAME = "libGLESv3_impl.so";
33 #ifdef OPENGL_WRAPPER_ENABLE_GL4
34 constexpr const char *LIB_EGL_MESA_NAME = "libEGL_mesa.so";
35 #endif
36 }
37
GetInstance()38 EglWrapperLoader& EglWrapperLoader::GetInstance()
39 {
40 static EglWrapperLoader loader;
41 return loader;
42 }
43
~EglWrapperLoader()44 EglWrapperLoader::~EglWrapperLoader()
45 {
46 WLOGD("");
47 }
48
49 using GetProcAddressType = FunctionPointerType (*)(const char *);
LoadEgl(const char * libName,EglHookTable * table)50 bool EglWrapperLoader::LoadEgl(const char* libName, EglHookTable* table)
51 {
52 WLOGD("");
53 dlEglHandle_ = dlopen(libName, RTLD_NOW | RTLD_LOCAL);
54 if (dlEglHandle_ == nullptr) {
55 WLOGE("dlopen failed. error: %{public}s.", dlerror());
56 return false;
57 }
58
59 GetProcAddressType getProcAddr =
60 (GetProcAddressType)dlsym(dlEglHandle_, "eglGetProcAddress");
61 if (getProcAddr == nullptr) {
62 WLOGE("can't find eglGetProcAddress() in EGL driver library.");
63 return false;
64 }
65
66 FunctionPointerType *current = (FunctionPointerType *)table;
67 char const * const *api = gEglApiNames;
68 while (*api) {
69 char const *name = *api;
70 FunctionPointerType func = (FunctionPointerType)dlsym(dlEglHandle_, name);
71 if (func == nullptr) {
72 WLOGD("try to getProcAddr %{public}s.", name);
73 func = getProcAddr(name);
74 if (func == nullptr) {
75 WLOGD("couldn't find the entry-point: %{public}s.", name);
76 }
77 }
78
79 *current++ = func;
80 api++;
81 }
82
83 return true;
84 }
85
86 #ifdef OPENGL_WRAPPER_ENABLE_GL4
LoadGlFromMesa(char const * const * glName,FunctionPointerType * entry)87 bool EglWrapperLoader::LoadGlFromMesa(char const * const *glName, FunctionPointerType *entry)
88 {
89 if (!dlEglHandle_ || !gWrapperHook.useMesa || !glName || !entry) {
90 return false;
91 }
92
93 GetProcAddressType getProcAddr =
94 (GetProcAddressType)dlsym(dlEglHandle_, "eglGetProcAddress");
95 if (getProcAddr == nullptr) {
96 WLOGE("can't find eglGetProcAddress() in EGL_mesa driver library.");
97 return false;
98 }
99
100 FunctionPointerType *current = entry;
101 char const * const *api = glName;
102 while (*api) {
103 char const *name = *api;
104 FunctionPointerType func = getProcAddr(name);
105 if (func == nullptr) {
106 WLOGD("couldn't find the entry-point: %{public}s.", name);
107 }
108 *current++ = func;
109 api++;
110 }
111
112 return true;
113 }
114 #endif
115
LoadGl(const char * libName,char const * const * glName,FunctionPointerType * entry)116 void *EglWrapperLoader::LoadGl(const char *libName, char const * const *glName, FunctionPointerType *entry)
117 {
118 WLOGD("");
119 void *dlHandle = nullptr;
120 dlHandle = dlopen(libName, RTLD_NOW | RTLD_LOCAL);
121 if (dlHandle == nullptr) {
122 WLOGE("dlopen failed. error: %{public}s.", dlerror());
123 return nullptr;
124 }
125
126 GetProcAddressType getProcAddr =
127 (GetProcAddressType)dlsym(dlEglHandle_, "eglGetProcAddress");
128 if (getProcAddr == nullptr) {
129 WLOGE("can't find eglGetProcAddress() in EGL driver library.");
130 dlclose(dlHandle);
131 return nullptr;
132 }
133
134 FunctionPointerType *current = entry;
135 char const * const *api = glName;
136 while (*api) {
137 char const *name = *api;
138 FunctionPointerType func = (FunctionPointerType)dlsym(dlHandle, name);
139 if (func == nullptr) {
140 WLOGD("try to getProcAddr %{public}s.", name);
141 func = getProcAddr(name);
142 if (func == nullptr) {
143 WLOGD("couldn't find the entry-point: %{public}s.", name);
144 }
145 }
146 *current++ = func;
147 api++;
148 }
149
150 return dlHandle;
151 }
152
LoadVendorDriver(EglWrapperDispatchTable * table)153 bool EglWrapperLoader::LoadVendorDriver(EglWrapperDispatchTable *table)
154 {
155 #ifdef OPENGL_WRAPPER_ENABLE_GL4
156 if (gWrapperHook.useMesa) {
157 WLOGD("EGL (mesa)");
158 if (!LoadEgl(LIB_EGL_MESA_NAME, &table->egl)) {
159 WLOGE("LoadEgl_mesa Failed.");
160 return false;
161 }
162
163 WLOGD("GL/GLES (mesa)");
164 if (!LoadGlFromMesa(gGlApiNames1, (FunctionPointerType *)&table->gl.table1) ||
165 !LoadGlFromMesa(gGlApiNames2, (FunctionPointerType *)&table->gl.table2) ||
166 !LoadGlFromMesa(gGlApiNames3, (FunctionPointerType *)&table->gl.table3) ||
167 !LoadGlFromMesa(gGlApiNames4, (FunctionPointerType *)&table->gl.table4)) {
168 return false;
169 }
170 return true;
171 }
172 #endif
173
174 WLOGD("EGL");
175 if (!LoadEgl(LIB_EGL_NAME, &table->egl)) {
176 WLOGE("LoadEgl Failed.");
177 return false;
178 }
179
180 WLOGD("GLESV1");
181 dlGlHandle1_ = LoadGl(LIB_GLESV1_NAME, gGlApiNames1, (FunctionPointerType *)&table->gl.table1);
182 if (!dlGlHandle1_) {
183 WLOGE("LoadGl GLESV1 Failed.");
184 return false;
185 }
186
187 WLOGD("GLESV2");
188 dlGlHandle2_ = LoadGl(LIB_GLESV2_NAME, gGlApiNames2, (FunctionPointerType *)&table->gl.table2);
189 if (!dlGlHandle2_) {
190 WLOGE("LoadGl GLESV2 Failed.");
191 return false;
192 }
193
194 WLOGD("GLESV3");
195 dlGlHandle3_ = LoadGl(LIB_GLESV3_NAME, gGlApiNames3, (FunctionPointerType *)&table->gl.table3);
196 if (!dlGlHandle3_) {
197 WLOGE("LoadGl GLESV3 Failed.");
198 return false;
199 }
200
201 return true;
202 }
203
Load(EglWrapperDispatchTable * table)204 bool EglWrapperLoader::Load(EglWrapperDispatchTable *table)
205 {
206 WLOGD("");
207 if (table == nullptr) {
208 WLOGE("table is nullptr.");
209 return false;
210 }
211
212 if (table->isLoad) {
213 WLOGI("EglWrapperLoader has been already loaded.");
214 return true;
215 }
216
217 if (!LoadVendorDriver(table)) {
218 WLOGE("LoadVendorDriver Failed.");
219 return false;
220 }
221
222 table->isLoad = true;
223 return true;
224 }
225
Unload(EglWrapperDispatchTable * table)226 bool EglWrapperLoader::Unload(EglWrapperDispatchTable *table)
227 {
228 WLOGD("");
229 if (table == nullptr) {
230 WLOGE("table is nullptr.");
231 return false;
232 }
233 if (!table->isLoad) {
234 WLOGE("EglWrapperLoader is not loaded.");
235 return false;
236 }
237
238 table->isLoad = false;
239
240 if (dlEglHandle_) {
241 dlclose(dlEglHandle_);
242 dlEglHandle_ = nullptr;
243 }
244 if (dlGlHandle1_) {
245 dlclose(dlGlHandle1_);
246 dlGlHandle1_ = nullptr;
247 }
248 if (dlGlHandle2_) {
249 dlclose(dlGlHandle2_);
250 dlGlHandle2_ = nullptr;
251 }
252 if (dlGlHandle3_) {
253 dlclose(dlGlHandle3_);
254 dlGlHandle3_ = nullptr;
255 }
256
257 return true;
258 }
259
GetProcAddrFromDriver(const char * name)260 void *EglWrapperLoader::GetProcAddrFromDriver(const char *name)
261 {
262 void *func = nullptr;
263
264 if (dlEglHandle_) {
265 func = dlsym(dlEglHandle_, name);
266 }
267
268 if (!func && dlGlHandle3_) {
269 func = dlsym(dlGlHandle3_, name);
270 }
271
272 if (!func && dlGlHandle2_) {
273 func = dlsym(dlGlHandle2_, name);
274 }
275
276 if (!func && dlGlHandle1_) {
277 func = dlsym(dlGlHandle1_, name);
278 }
279
280 return func;
281 }
282 } // namespace OHOS
283