common/detector/Egl.h

/*
 * Copyright (C) 2021 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.
 */

#pragma once

#include <string>

#include <EGL/egl.h>
#include <EGL/eglext.h>

#include "EglFuncs.h"
#include "Lib.h"
#include "Expected.h"

namespace gfxstream {

class Egl {
  public:
    static gfxstream::expected<Egl, std::string> Load();

    Egl(const Egl&) = delete;
    Egl& operator=(const Egl&) = delete;

    Egl(Egl&&) = default;
    Egl& operator=(Egl&&) = default;

  #define DECLARE_EGL_FUNCTION_MEMBER_POINTER(return_type, function_name, \
                                              signature)                  \
    return_type(EGLAPIENTRY* function_name) signature = nullptr;

    FOR_EACH_EGL_FUNCTION(DECLARE_EGL_FUNCTION_MEMBER_POINTER);

  private:
    Egl() = default;

    gfxstream::expected<Ok, std::string> Init();

    Lib mLib;
};

}  // namespace gfxstream