1 /* 2 ** Copyright 2007, 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_OBJECT_H 18 #define ANDROID_EGL_OBJECT_H 19 20 21 #include <ctype.h> 22 #include <stdint.h> 23 #include <stdlib.h> 24 25 #include <EGL/egl.h> 26 #include <EGL/eglext.h> 27 #include <GLES/gl.h> 28 #include <GLES/glext.h> 29 30 #include <utils/threads.h> 31 #include <utils/String8.h> 32 33 #include <system/window.h> 34 35 #include "egl_display.h" 36 37 // ---------------------------------------------------------------------------- 38 namespace android { 39 // ---------------------------------------------------------------------------- 40 41 struct egl_display_t; 42 43 class egl_object_t { 44 egl_display_t *display; 45 mutable volatile int32_t count; 46 47 protected: 48 virtual ~egl_object_t(); 49 50 public: 51 egl_object_t(egl_display_t* display); 52 void destroy(); 53 54 inline int32_t incRef() { return android_atomic_inc(&count); } 55 inline int32_t decRef() { return android_atomic_dec(&count); } 56 inline egl_display_t* getDisplay() const { return display; } 57 58 private: 59 void terminate(); 60 static bool get(egl_display_t const* display, egl_object_t* object); 61 62 public: 63 template <typename N, typename T> 64 class LocalRef { 65 egl_object_t* ref; 66 LocalRef(); 67 LocalRef(const LocalRef* rhs); 68 public: 69 ~LocalRef(); 70 explicit LocalRef(egl_object_t* rhs); 71 explicit LocalRef(egl_display_t const* display, T o) : ref(0) { 72 egl_object_t* native = reinterpret_cast<N*>(o); 73 if (o && egl_object_t::get(display, native)) { 74 ref = native; 75 } 76 } 77 inline N* get() { 78 return static_cast<N*>(ref); 79 } 80 void acquire() const; 81 void release() const; 82 void terminate(); 83 }; 84 template <typename N, typename T> 85 friend class LocalRef; 86 }; 87 88 template<typename N, typename T> 89 egl_object_t::LocalRef<N, T>::LocalRef(egl_object_t* rhs) : ref(rhs) { 90 if (ref) { 91 ref->incRef(); 92 } 93 } 94 95 template <typename N, typename T> 96 egl_object_t::LocalRef<N,T>::~LocalRef() { 97 if (ref) { 98 ref->destroy(); 99 } 100 } 101 102 template <typename N, typename T> 103 void egl_object_t::LocalRef<N,T>::acquire() const { 104 if (ref) { 105 ref->incRef(); 106 } 107 } 108 109 template <typename N, typename T> 110 void egl_object_t::LocalRef<N,T>::release() const { 111 if (ref) { 112 if (ref->decRef() == 1) { 113 // shouldn't happen because this is called from LocalRef 114 ALOGE("LocalRef::release() removed the last reference!"); 115 } 116 } 117 } 118 119 template <typename N, typename T> 120 void egl_object_t::LocalRef<N,T>::terminate() { 121 if (ref) { 122 ref->terminate(); 123 } 124 } 125 126 // ---------------------------------------------------------------------------- 127 128 class egl_surface_t : public egl_object_t { 129 protected: 130 ~egl_surface_t(); 131 public: 132 typedef egl_object_t::LocalRef<egl_surface_t, EGLSurface> Ref; 133 134 egl_surface_t(egl_display_t* dpy, EGLConfig config, 135 EGLNativeWindowType win, EGLSurface surface, 136 egl_connection_t const* cnx); 137 138 EGLSurface surface; 139 EGLConfig config; 140 sp<ANativeWindow> win; 141 egl_connection_t const* cnx; 142 }; 143 144 class egl_context_t: public egl_object_t { 145 protected: 146 ~egl_context_t() {} 147 public: 148 typedef egl_object_t::LocalRef<egl_context_t, EGLContext> Ref; 149 150 egl_context_t(EGLDisplay dpy, EGLContext context, EGLConfig config, 151 egl_connection_t const* cnx, int version); 152 153 void onLooseCurrent(); 154 void onMakeCurrent(EGLSurface draw, EGLSurface read); 155 156 EGLDisplay dpy; 157 EGLContext context; 158 EGLConfig config; 159 EGLSurface read; 160 EGLSurface draw; 161 egl_connection_t const* cnx; 162 int version; 163 String8 gl_extensions; 164 }; 165 166 // ---------------------------------------------------------------------------- 167 168 typedef egl_surface_t::Ref SurfaceRef; 169 typedef egl_context_t::Ref ContextRef; 170 171 // ---------------------------------------------------------------------------- 172 173 template<typename NATIVE, typename EGL> 174 static inline NATIVE* egl_to_native_cast(EGL arg) { 175 return reinterpret_cast<NATIVE*>(arg); 176 } 177 178 static inline 179 egl_surface_t* get_surface(EGLSurface surface) { 180 return egl_to_native_cast<egl_surface_t>(surface); 181 } 182 183 static inline 184 egl_context_t* get_context(EGLContext context) { 185 return egl_to_native_cast<egl_context_t>(context); 186 } 187 188 // ---------------------------------------------------------------------------- 189 }; // namespace android 190 // ---------------------------------------------------------------------------- 191 192 #endif // ANDROID_EGL_OBJECT_H 193
