SkinImage.php

<?php
 
/*
 * This file is part of BedrockProtocol.
 * Copyright (C) 2014-2022 PocketMine Team <https://github.com/pmmp/BedrockProtocol>
 *
 * BedrockProtocol is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 */
 
declare(strict_types=1);
 
namespace pocketmine\network\mcpe\protocol\types\skin;
 
use function strlen;
 
class SkinImage{
    public function __construct(
        private int $height,
        private int $width,
        private string $data
    ){
        if($height < 0 or $width < 0){
            throw new \InvalidArgumentException("Height and width cannot be negative");
        }
        if(($expected = $height * $width * 4) !== ($actual = strlen($data))){
            throw new \InvalidArgumentException("Data should be exactly $expected bytes, got $actual bytes");
        }
    }
 
    public static function fromLegacy(string $data) : SkinImage{
        switch(strlen($data)){
            case 64 * 32 * 4:
                return new self(32, 64, $data);
            case 64 * 64 * 4:
                return new self(64, 64, $data);
            case 128 * 128 * 4:
                return new self(128, 128, $data);
        }
 
        throw new \InvalidArgumentException("Unknown size");
    }
 
    public function getHeight() : int{
        return $this->height;
    }
 
    public function getWidth() : int{
        return $this->width;
    }
 
    public function getData() : string{
        return $this->data;
    }
}