98 lines
2.7 KiB
PHP
98 lines
2.7 KiB
PHP
<?php
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class thumb {
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protected string $imagedir;
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protected string $thumbdir;
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protected int $w = 200;
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protected int $h = 200;
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protected string $ffmpeg_cmd = '/usr/bin/ffmpeg';
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protected string $ffprobe_cmd = '/usr/bin/ffprobe';
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const IMAGE_HANDLERS = [
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IMAGETYPE_JPEG => [
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'load' => 'imagecreatefromjpeg',
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],
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IMAGETYPE_PNG => [
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'load' => 'imagecreatefrompng',
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],
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IMAGETYPE_GIF => [
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'load' => 'imagecreatefromgif',
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],
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IMAGETYPE_WEBP => [
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'load' => 'imagecreatefromwebp',
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]
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];
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public function __construct($idir, $tdir, $width, $heigth) {
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$this->imagedir = $idir;
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$this->thumbdir = $tdir;
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$this->w = $width;
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$this->h = $heigth;
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}
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public function get_thumb($iname) {
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$src = $this->imagedir.$iname;
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$dstname = hash('sha256', $src);
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$dstpath = $this->thumbdir.$dstname.'.jpg';
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if (!file_exists($dstpath)) {
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if(str_starts_with(mime_content_type($src), 'video/')) {
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$cmd = $this->ffprobe_cmd.' -i "'.$src.'" -show_entries format=duration -v quiet -of csv="p=0"';
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exec($cmd, $output, $retval);
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$seconds = ($output[0]*10) / 100;
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$cmd = $this->ffmpeg_cmd.' -i "'.$src.'" -an -ss '.$seconds.' -t 00:00:01 -vf scale=w='.$this->w.':h='.$this->h.':force_original_aspect_ratio=decrease -r 1 -y -vcodec mjpeg -f mjpeg '.$dstpath.' 2>&1';
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exec($cmd, $output, $retval);
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if ($retval) {
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return "img/video.png";
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} else {
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return $dstpath;
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}
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}
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$type = exif_imagetype($src);
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if ($type == 0) {
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error_log("$src: Unknown Image Type");
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return "img/error.png";
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}
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$image = call_user_func(self::IMAGE_HANDLERS[$type]['load'], $src);
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if ($image == false) {
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error_log("$src: Image Loading Failed");
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return "img/error.png";
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}
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$srcwidth = imagesx($image);
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$srcheight = imagesy($image);
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$ratio = min($this->w / $srcwidth, $this->h / $srcheight);
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$width = round($srcwidth*$ratio);
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$height = round($srcheight*$ratio);
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$thumbnail = imagecreatetruecolor($width, $height);
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if ($type == IMAGETYPE_GIF || $type == IMAGETYPE_PNG) {
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imagecolortransparent($thumbnail, imagecolorallocate($thumbnail, 0, 0, 0));
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if ($type == IMAGETYPE_PNG) {
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imagealphablending($thumbnail, false);
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imagesavealpha($thumbnail, true);
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}
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}
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imagecopyresampled($thumbnail, $image, 0, 0, 0, 0, $width, $height, $srcwidth, $srcheight);
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call_user_func('imagejpeg',$thumbnail,$dstpath,100);
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imagedestroy($image);
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imagedestroy($thumbnail);
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}
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return $dstpath;
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}
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}
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?>
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