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 #ifndef EGL_MANAGER_H
17 #define EGL_MANAGER_H
18 
19 #include <GLES3/gl32.h>
20 #include <EGL/egl.h>
21 #include <EGL/eglext.h>
22 #include "ec_log.h"
23 
24 #ifdef __cplusplus
25 extern "C" {
26 #endif
27 
28 namespace OHOS {
29 namespace Rosen {
30 class EglManager {
31 public:
32     static constexpr int EGL_SUPPORT_VERSION = 3;
33     static constexpr int EGL_LIMIT_VERSION = 4;
GetInstance()34     static EglManager& GetInstance()
35     {
36         static EglManager manager;
37         return manager;
38     }
39 
~EglManager()40     ~EglManager()
41     {
42         Deinit();
43     }
44     EGLConfig GetConfig(int version, EGLDisplay eglDisplay);
45     EGLBoolean Init();
46     EGLBoolean IsEGLContextInCurrentThread(EGLDisplay display, EGLContext context);
47 
48 private:
49 
EglManager()50     EglManager() : EGLDisplay_(EGL_NO_DISPLAY), EGLConfig_(nullptr), EGLContext_(EGL_NO_CONTEXT),
51         currentSurface_(nullptr) {}
52     EglManager(const EglManager&) = delete;
53     EglManager& operator=(const EglManager&) = delete;
54     void Deinit();
55     bool RetryEGLContext();
56     bool InitializeEGLDisplay();
57     bool CreateEGLSurface();
58     bool CreateAndSetEGLContext();
59 
60     EGLDisplay EGLDisplay_;
61     EGLConfig EGLConfig_;
62     EGLContext EGLContext_;
63     EGLSurface currentSurface_;
64 #ifndef ANDROID_PLATFORM
65     NativeWindow *EGLWindow_ = nullptr;
66 #endif
67     bool initialized_ = false;
68     int EGLWidth_ = 0;
69     int EGLHeight_ = 0;
70 };
71 } // namespace Rosen
72 } // namespace OHOS
73 
74 #ifdef __cplusplus
75 }
76 #endif
77 
78 #endif // EGL_MANAGER_H
79