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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.
*/
#pragma once
#include <cstdint>
#include <map>
#include <EGL/egl.h>
struct ANativeWindow;
struct EglSurface {
static std::map<uint32_t, EglSurface*> map;
static uint32_t nextId;
EglSurface(EGLConfig config_, uint32_t ctx_, uint32_t width_, uint32_t height_)
: create_ctx(ctx_), config(config_), height(height_), width(width_), id(nextId++) {
map.emplace(id, this);
}
~EglSurface() {
map.erase(id);
}
EglSurface* bind(uint32_t ctx_, bool read_) {
for (auto const& it : EglSurface::map) {
EglSurface* sur = it.second;
if (sur == this)
continue;
if (sur->bound_ctx == ctx_) {
if (read_ && sur->read)
return sur;
if (!read_ && sur->draw)
return sur;
}
}
if (read_) {
read = true;
} else {
draw = true;
}
bound_ctx = ctx_;
return nullptr;
}
void unbind(bool read_) {
if (read || draw) {
if (read_)
read = false;
else
draw = false;
if (read || draw)
return;
bound_ctx = 0U;
}
return;
}
bool disposable() {
return surface == EGL_NO_SURFACE && bound_ctx == 0U;
}
EGLSurface surface = EGL_NO_SURFACE;
ANativeWindow* window = nullptr;
uint32_t create_ctx;
EGLConfig config;
uint32_t height;
uint32_t width;
uint32_t id;
private:
uint32_t bound_ctx = 0U;
bool draw = false;
bool read = false;
};
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