1 /* 2 ** Copyright 2009, 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 ANDROID_EGL_LOADER_H 18 #define ANDROID_EGL_LOADER_H 19 20 #include <ctype.h> 21 #include <string.h> 22 #include <errno.h> 23 24 #include <utils/Errors.h> 25 #include <utils/Singleton.h> 26 #include <utils/String8.h> 27 28 #include <gui/GraphicsEnv.h> 29 30 #include <EGL/egl.h> 31 32 // ---------------------------------------------------------------------------- 33 namespace android { 34 // ---------------------------------------------------------------------------- 35 36 struct egl_connection_t; 37 38 class Loader : public Singleton<Loader> 39 { 40 friend class Singleton<Loader>; 41 42 typedef __eglMustCastToProperFunctionPointerType (*getProcAddressType)( 43 const char*); 44 45 enum { 46 EGL = 0x01, 47 GLESv1_CM = 0x02, 48 GLESv2 = 0x04 49 }; 50 struct driver_t { 51 driver_t(void* gles); 52 ~driver_t(); 53 status_t set(void* hnd, int32_t api); 54 void* dso[3]; 55 }; 56 57 getProcAddressType getProcAddress; 58 59 void* mLibGui; 60 decltype(android_getDriverNamespace)* mGetDriverNamespace; 61 62 public: 63 ~Loader(); 64 65 void* open(egl_connection_t* cnx); 66 status_t close(void* driver); 67 68 private: 69 Loader(); 70 void *load_driver(const char* kind, egl_connection_t* cnx, uint32_t mask); 71 72 static __attribute__((noinline)) 73 void init_api(void* dso, 74 char const * const * api, 75 __eglMustCastToProperFunctionPointerType* curr, 76 getProcAddressType getProcAddress); 77 }; 78 79 // ---------------------------------------------------------------------------- 80 }; // namespace android 81 // ---------------------------------------------------------------------------- 82 83 #endif /* ANDROID_EGL_LOADER_H */ 84