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<?php
declare(strict_types=1);
/**
* Nextcloud - Social Support
*
* This file is licensed under the Affero General Public License version 3 or
* later. See the COPYING file.
*
* @author Maxence Lange <maxence@artificial-owl.com>
* @copyright 2023, Maxence Lange <maxence@artificial-owl.com>
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCA\Social\Service;
use GdImage;
use kornrunner\Blurhash\Blurhash;
class BlurService {
public function __construct() {
}
public function generateBlurHash(GdImage $image): string {
$width = imagesx($image);
$height = imagesy($image);
$pixels = [];
for ($y = 0; $y < $height; ++$y) {
$row = [];
for ($x = 0; $x < $width; ++$x) {
$index = imagecolorat($image, $x, $y);
$colors = imagecolorsforindex($image, $index);
$row[] = [$colors['red'], $colors['green'], $colors['blue']];
}
$pixels[] = $row;
}
return Blurhash::encode($pixels, 4, 3);
}
}
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