| /* |
| ** Copyright 2007, The Android Open Source Project |
| ** |
| ** Licensed under the Apache License, Version 2.0 (the "License"); |
| ** you may not use this file except in compliance with the License. |
| ** You may obtain a copy of the License at |
| ** |
| ** http://www.apache.org/licenses/LICENSE-2.0 |
| ** |
| ** Unless required by applicable law or agreed to in writing, software |
| ** distributed under the License is distributed on an "AS IS" BASIS, |
| ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| ** See the License for the specific language governing permissions and |
| ** limitations under the License. |
| */ |
| |
| #ifndef ANDROID_EGL_OBJECT_H |
| #define ANDROID_EGL_OBJECT_H |
| |
| #include <atomic> |
| #include <ctype.h> |
| #include <stdint.h> |
| #include <stdlib.h> |
| |
| #include <EGL/egl.h> |
| #include <EGL/eglext.h> |
| |
| #include <utils/threads.h> |
| #include <utils/String8.h> |
| #include <utils/Vector.h> |
| |
| #include <system/window.h> |
| |
| #include "egl_display.h" |
| |
| // ---------------------------------------------------------------------------- |
| namespace android { |
| // ---------------------------------------------------------------------------- |
| |
| class egl_display_t; |
| |
| class egl_object_t { |
| egl_display_t *display; |
| mutable std::atomic_size_t count; |
| |
| protected: |
| virtual ~egl_object_t(); |
| virtual void terminate(); |
| |
| public: |
| explicit egl_object_t(egl_display_t* display); |
| void destroy(); |
| |
| inline void incRef() { count.fetch_add(1, std::memory_order_relaxed); } |
| inline size_t decRef() { return count.fetch_sub(1, std::memory_order_acq_rel); } |
| inline egl_display_t* getDisplay() const { return display; } |
| |
| private: |
| static bool get(egl_display_t const* display, egl_object_t* object); |
| |
| public: |
| template <typename N, typename T> |
| class LocalRef { |
| egl_object_t* ref; |
| LocalRef(); |
| explicit LocalRef(const LocalRef* rhs); |
| public: |
| ~LocalRef(); |
| explicit LocalRef(egl_object_t* rhs); |
| explicit LocalRef(egl_display_t const* display, T o) : ref(0) { |
| egl_object_t* native = reinterpret_cast<N*>(o); |
| if (o && egl_object_t::get(display, native)) { |
| ref = native; |
| } |
| } |
| inline N* get() { |
| return static_cast<N*>(ref); |
| } |
| void acquire() const; |
| void release() const; |
| void terminate(); |
| }; |
| template <typename N, typename T> |
| friend class LocalRef; |
| }; |
| |
| template<typename N, typename T> |
| egl_object_t::LocalRef<N, T>::LocalRef(egl_object_t* rhs) : ref(rhs) { |
| if (ref) { |
| ref->incRef(); |
| } |
| } |
| |
| template <typename N, typename T> |
| egl_object_t::LocalRef<N,T>::~LocalRef() { |
| if (ref) { |
| ref->destroy(); |
| } |
| } |
| |
| template <typename N, typename T> |
| void egl_object_t::LocalRef<N,T>::acquire() const { |
| if (ref) { |
| ref->incRef(); |
| } |
| } |
| |
| template <typename N, typename T> |
| void egl_object_t::LocalRef<N,T>::release() const { |
| if (ref) { |
| if (ref->decRef() == 1) { |
| // shouldn't happen because this is called from LocalRef |
| ALOGE("LocalRef::release() removed the last reference!"); |
| } |
| } |
| } |
| |
| template <typename N, typename T> |
| void egl_object_t::LocalRef<N,T>::terminate() { |
| if (ref) { |
| ref->terminate(); |
| } |
| } |
| |
| // ---------------------------------------------------------------------------- |
| |
| class egl_surface_t : public egl_object_t { |
| protected: |
| ~egl_surface_t(); |
| void terminate() override; |
| public: |
| typedef egl_object_t::LocalRef<egl_surface_t, EGLSurface> Ref; |
| |
| egl_surface_t(egl_display_t* dpy, EGLConfig config, |
| EGLNativeWindowType win, EGLSurface surface, |
| egl_connection_t const* cnx); |
| |
| EGLSurface surface; |
| EGLConfig config; |
| sp<ANativeWindow> win; |
| egl_connection_t const* cnx; |
| private: |
| bool connected; |
| void disconnect(); |
| }; |
| |
| class egl_context_t: public egl_object_t { |
| protected: |
| ~egl_context_t() {} |
| public: |
| typedef egl_object_t::LocalRef<egl_context_t, EGLContext> Ref; |
| |
| egl_context_t(EGLDisplay dpy, EGLContext context, EGLConfig config, |
| egl_connection_t const* cnx, int version); |
| |
| void onLooseCurrent(); |
| void onMakeCurrent(EGLSurface draw, EGLSurface read); |
| |
| EGLDisplay dpy; |
| EGLContext context; |
| EGLConfig config; |
| EGLSurface read; |
| EGLSurface draw; |
| egl_connection_t const* cnx; |
| int version; |
| String8 gl_extensions; |
| Vector<String8> tokenized_gl_extensions; |
| }; |
| |
| // ---------------------------------------------------------------------------- |
| |
| typedef egl_surface_t::Ref SurfaceRef; |
| typedef egl_context_t::Ref ContextRef; |
| |
| // ---------------------------------------------------------------------------- |
| |
| template<typename NATIVE, typename EGL> |
| static inline NATIVE* egl_to_native_cast(EGL arg) { |
| return reinterpret_cast<NATIVE*>(arg); |
| } |
| |
| static inline |
| egl_surface_t* get_surface(EGLSurface surface) { |
| return egl_to_native_cast<egl_surface_t>(surface); |
| } |
| |
| static inline |
| egl_context_t* get_context(EGLContext context) { |
| return egl_to_native_cast<egl_context_t>(context); |
| } |
| |
| // ---------------------------------------------------------------------------- |
| }; // namespace android |
| // ---------------------------------------------------------------------------- |
| |
| #endif // ANDROID_EGL_OBJECT_H |