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 <EGL/egl.h> 29 30 // ---------------------------------------------------------------------------- 31 namespace android { 32 // ---------------------------------------------------------------------------- 33 34 struct egl_connection_t; 35 36 class Loader : public Singleton<Loader> 37 { 38 friend class Singleton<Loader>; 39 40 typedef __eglMustCastToProperFunctionPointerType (*getProcAddressType)( 41 const char*); 42 43 enum { 44 EGL = 0x01, 45 GLESv1_CM = 0x02, 46 GLESv2 = 0x04 47 }; 48 struct driver_t { 49 driver_t(void* gles); 50 ~driver_t(); 51 status_t set(void* hnd, int32_t api); 52 void* dso[3]; 53 }; 54 55 String8 mDriverTag; 56 getProcAddressType getProcAddress; 57 58 public: 59 ~Loader(); 60 61 void* open(egl_connection_t* cnx); 62 status_t close(void* driver); 63 64 private: 65 Loader(); 66 void *load_driver(const char* kind, const char *tag, egl_connection_t* cnx, uint32_t mask); 67 68 static __attribute__((noinline)) 69 void init_api(void* dso, 70 char const * const * api, 71 __eglMustCastToProperFunctionPointerType* curr, 72 getProcAddressType getProcAddress); 73 }; 74 75 // ---------------------------------------------------------------------------- 76 }; // namespace android 77 // ---------------------------------------------------------------------------- 78 79 #endif /* ANDROID_EGL_LOADER_H */ 80