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86 lines
2.7 KiB
86 lines
2.7 KiB
7 months ago
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/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef ANDROID_EGL_LAYERS_H
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#define ANDROID_EGL_LAYERS_H
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#include <EGL/egldefs.h>
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#include <android/dlext.h>
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#include <dlfcn.h>
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#include <nativebridge/native_bridge.h>
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#include <nativeloader/native_loader.h>
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#include <string>
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#include <unordered_map>
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#include <vector>
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#include "egl_platform_entries.h"
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typedef __eglMustCastToProperFunctionPointerType EGLFuncPointer;
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namespace android {
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class LayerLoader {
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public:
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static LayerLoader& getInstance();
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~LayerLoader(){};
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typedef void* (*PFNEGLGETNEXTLAYERPROCADDRESSPROC)(void*, const char*);
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typedef EGLFuncPointer (*layer_init_func)(
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const void* layer_id, PFNEGLGETNEXTLAYERPROCADDRESSPROC get_next_layer_proc_address);
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typedef EGLFuncPointer (*layer_setup_func)(const char* name, EGLFuncPointer next);
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void LoadLayers();
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void InitLayers(egl_connection_t*);
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void LayerPlatformEntries(layer_setup_func layer_setup, EGLFuncPointer*, const char* const*);
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void LayerDriverEntries(layer_setup_func layer_setup, EGLFuncPointer*, const char* const*);
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bool Initialized();
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std::string GetDebugLayers();
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EGLFuncPointer GetGpaNext(unsigned i);
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EGLFuncPointer ApplyLayer(layer_setup_func layer_setup, const char* name, EGLFuncPointer next);
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EGLFuncPointer ApplyLayers(const char* name, EGLFuncPointer next);
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std::vector<layer_init_func> layer_init_;
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std::vector<layer_setup_func> layer_setup_;
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private:
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LayerLoader()
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: layers_loaded_(false),
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initialized_(false),
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current_layer_(0),
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dlhandle_(nullptr),
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native_bridge_(false){};
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bool layers_loaded_;
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bool initialized_;
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unsigned current_layer_;
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void* dlhandle_;
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bool native_bridge_;
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template <typename Func = void*>
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Func GetTrampoline(const char* name) const {
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if (native_bridge_) {
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return reinterpret_cast<Func>(
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android::NativeBridgeGetTrampoline(dlhandle_, name, nullptr, 0));
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}
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return reinterpret_cast<Func>(dlsym(dlhandle_, name));
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}
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};
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}; // namespace android
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#endif // ANDROID_EGL_LAYERS_H
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