spatie/spatie.be

use Spatie\MediaLibrary\ResponsiveImages\WidthCalculator\FileSizeOptimizedWidthCalculator as BaseFileSizeOptimizedWidthCalculator;
 
class FileSizeOptimizedWidthCalculator extends BaseFileSizeOptimizedWidthCalculator
{
    public float $stepSize = 0.4;
 
    public function calculateWidths(int $fileSize, int $width, int $height): Collection
    {
        $targetWidths = collect();
 
        $targetWidths->push($width);
 
        $ratio = $height / $width;
        $area = $height * $width;
 
        $predictedFileSize = $fileSize;
        $pixelPrice = $predictedFileSize / $area;
 
        while (true) {
            $predictedFileSize *= $this->stepSize;
 
            $newWidth = (int) floor(sqrt(($predictedFileSize / $pixelPrice) / $ratio));
 
            if ($this->finishedCalculating((int) $predictedFileSize, $newWidth)) {
                return $targetWidths;
            }
 
            $targetWidths->push($newWidth);
        }
    }
}