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/*
* Copyright (C) 2018 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_LAYERS_H
#define ANDROID_EGL_LAYERS_H
#include <string>
#include <unordered_map>
#include <vector>
#include <android/dlext.h>
#include <dlfcn.h>
#include <EGL/egldefs.h>
#include "egl_platform_entries.h"
#include <nativebridge/native_bridge.h>
#include <nativeloader/native_loader.h>
typedef __eglMustCastToProperFunctionPointerType EGLFuncPointer;
namespace android {
class LayerLoader {
public:
static LayerLoader& getInstance();
~LayerLoader(){};
typedef void* (*PFNEGLGETNEXTLAYERPROCADDRESSPROC)(void*, const char*);
typedef EGLFuncPointer (*layer_init_func)(
const void* layer_id, PFNEGLGETNEXTLAYERPROCADDRESSPROC get_next_layer_proc_address);
typedef EGLFuncPointer (*layer_setup_func)(const char* name, EGLFuncPointer next);
void LoadLayers();
void InitLayers(egl_connection_t*);
void LayerPlatformEntries(layer_setup_func layer_setup, EGLFuncPointer*, char const* const*);
void LayerDriverEntries(layer_setup_func layer_setup, EGLFuncPointer*, char const* const*);
bool Initialized();
std::string GetDebugLayers();
EGLFuncPointer GetGpaNext(unsigned i);
EGLFuncPointer ApplyLayer(layer_setup_func layer_setup, const char* name, EGLFuncPointer next);
EGLFuncPointer ApplyLayers(const char* name, EGLFuncPointer next);
std::vector<layer_init_func> layer_init_;
std::vector<layer_setup_func> layer_setup_;
private:
LayerLoader() : layers_loaded_(false), initialized_(false), current_layer_(0), dlhandle_(nullptr), native_bridge_(false){};
bool layers_loaded_;
bool initialized_;
unsigned current_layer_;
void* dlhandle_;
bool native_bridge_;
template<typename Func = void*>
Func GetTrampoline(const char* name) const {
if (native_bridge_) {
return reinterpret_cast<Func>(android::NativeBridgeGetTrampoline(
dlhandle_, name, nullptr, 0));
}
return reinterpret_cast<Func>(dlsym(dlhandle_, name));
}
};
}; // namespace android
#endif // ANDROID_EGL_LAYERS_H
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