1 /*
2  * Copyright (C) 2022 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #ifndef CPP_EVS_SAMPLEDRIVER_AIDL_INCLUDE_GLWRAPPER_H
18 #define CPP_EVS_SAMPLEDRIVER_AIDL_INCLUDE_GLWRAPPER_H
19 
20 #include <EGL/egl.h>
21 #include <EGL/eglext.h>
22 #include <GLES2/gl2.h>
23 #include <GLES2/gl2ext.h>
24 #include <GLES3/gl3.h>
25 #include <GLES3/gl3ext.h>
26 #include <aidl/android/frameworks/automotive/display/ICarDisplayProxy.h>
27 #include <aidl/android/hardware/automotive/evs/BufferDesc.h>
28 #include <android-base/logging.h>
29 #include <android-base/thread_annotations.h>
30 #include <cutils/native_handle.h>
31 
32 namespace aidl::android::hardware::automotive::evs::implementation {
33 
34 namespace automotivedisplay = ::aidl::android::frameworks::automotive::display;
35 
36 class GlWrapper {
37 public:
38     GlWrapper() = default;
39     bool initialize(const std::shared_ptr<automotivedisplay::ICarDisplayProxy>& svc,
40                     uint64_t displayId);
41     void shutdown();
42 
43     bool updateImageTexture(
44             buffer_handle_t handle,
45             const ::aidl::android::hardware::graphics::common::HardwareBufferDescription&
46                     description);
47     void renderImageToScreen();
48 
49     void showWindow(const std::shared_ptr<automotivedisplay::ICarDisplayProxy>& svc,
50                     uint64_t displayId);
51     void hideWindow(const std::shared_ptr<automotivedisplay::ICarDisplayProxy>& svc,
52                     uint64_t displayId);
53 
getWidth()54     unsigned getWidth() { return mWidth; };
getHeight()55     unsigned getHeight() { return mHeight; };
56 
57 private:
58     EGLDisplay mDisplay;
59     EGLSurface mSurface;
60     EGLContext mContext;
61 
62     unsigned mWidth = 0;
63     unsigned mHeight = 0;
64 
65     EGLImageKHR mKHRimage = EGL_NO_IMAGE_KHR;
66 
67     GLuint mTextureMap = 0;
68     GLuint mShaderProgram = 0;
69 
70     // Opaque handle for a native hardware buffer defined in
71     // frameworks/native/opengl/include/EGL/eglplatform.h
72     ANativeWindow* mWindow;
73 };
74 
75 }  // namespace aidl::android::hardware::automotive::evs::implementation
76 
77 #endif  // CPP_EVS_SAMPLEDRIVER_AIDL_INCLUDE_GLWRAPPER_H
78