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 <stdint.h> 21 22 #include <EGL/egl.h> 23 24 // ---------------------------------------------------------------------------- 25 namespace android { 26 // ---------------------------------------------------------------------------- 27 28 struct egl_connection_t; 29 30 class Loader { 31 typedef __eglMustCastToProperFunctionPointerType (* getProcAddressType)(const char*); 32 33 enum { 34 EGL = 0x01, 35 GLESv1_CM = 0x02, 36 GLESv2 = 0x04 37 }; 38 struct driver_t { 39 explicit driver_t(void* gles); 40 ~driver_t(); 41 // returns -errno 42 int set(void* hnd, int32_t api); 43 void* dso[3]; 44 }; 45 46 getProcAddressType getProcAddress; 47 48 public: 49 static Loader& getInstance(); 50 ~Loader(); 51 52 void* open(egl_connection_t* cnx); 53 void close(void* driver); 54 55 private: 56 Loader(); 57 void *load_driver(const char* kind, egl_connection_t* cnx, uint32_t mask); 58 59 static __attribute__((noinline)) 60 void init_api(void* dso, 61 char const * const * api, 62 __eglMustCastToProperFunctionPointerType* curr, 63 getProcAddressType getProcAddress); 64 }; 65 66 // ---------------------------------------------------------------------------- 67 }; // namespace android 68 // ---------------------------------------------------------------------------- 69 70 #endif /* ANDROID_EGL_LOADER_H */ 71