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webp 이미지를 업로드 할 수 있도록 수정 중

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kagla
2021-06-22 16:07:02 +09:00
parent 01c5771c16
commit 178886c87a
9 changed files with 83 additions and 33 deletions
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68
lib/thumbnail.lib.php
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@ -226,8 +226,18 @@ function thumbnail($filename, $source_path, $target_path, $thumb_width, $thumb_h
if(!is_file($source_file)) // 원본 파일이 없다면
return;
$size = @getimagesize($source_file);
if(!isset($size[2]) || $size[2] < 1 || $size[2] > 3) // gif, jpg, png 에 대해서만 적용
$extensions = array(1 => 'gif', 2 => 'jpg', 3 => 'png', 18 => 'webp');
$file_ext = $extensions[$size[2]]; // 파일 확장자
// gif, jpg, png, webp 에 대해서만 적용
// if ( !(isset($size[2]) && ($size[2] == 1 || $size[2] == 2 || $size[2] == 3 || $size[2] == 18)) )
// return;
// $extensions 배열에 없는 확장자 라면 썸네일 만들지 않음
if (!in_array($file_ext, $extensions))
return;
if (!is_dir($target_path)) {
@ -240,16 +250,19 @@ function thumbnail($filename, $source_path, $target_path, $thumb_width, $thumb_h
return '';
// Animated GIF는 썸네일 생성하지 않음
if($size[2] == 1) {
if($file_ext === 'gif') {
if(is_animated_gif($source_file))
return basename($source_file);
} else if ($file_ext === 'webp') {
if(is_animated_webp($source_file))
return basename($source_file);
}
$ext = array(1 => 'gif', 2 => 'jpg', 3 => 'png');
$thumb_filename = preg_replace("/\.[^\.]+$/i", "", $filename); // 확장자제거
$thumb_file = "$target_path/thumb-{$thumb_filename}_{$thumb_width}x{$thumb_height}.".$ext[$size[2]];
// $thumb_file = "$target_path/thumb-{$thumb_filename}_{$thumb_width}x{$thumb_height}.".$ext[$size[2]];
$thumb_file = "$target_path/thumb-{$thumb_filename}_{$thumb_width}x{$thumb_height}.".$file_ext;
$thumb_time = @filemtime($thumb_file);
$source_time = @filemtime($source_file);
@ -263,10 +276,10 @@ function thumbnail($filename, $source_path, $target_path, $thumb_width, $thumb_h
$src = null;
$degree = 0;
if ($size[2] == 1) {
if ($file_ext === 'gif') {
$src = @imagecreatefromgif($source_file);
$src_transparency = @imagecolortransparent($src);
} else if ($size[2] == 2) {
} else if ($file_ext === 'jpg') {
$src = @imagecreatefromjpeg($source_file);
if(function_exists('exif_read_data')) {
@ -298,9 +311,12 @@ function thumbnail($filename, $source_path, $target_path, $thumb_width, $thumb_h
}
}
}
} else if ($size[2] == 3) {
} else if ($file_ext === 'png') {
$src = @imagecreatefrompng($source_file);
@imagealphablending($src, true);
} else if ($file_ext === 'webp') {
$src = @imagecreatefromwebp($source_file);
@imagealphablending($src, true);
} else {
return;
}
@ -363,10 +379,10 @@ function thumbnail($filename, $source_path, $target_path, $thumb_width, $thumb_h
$dst = imagecreatetruecolor($dst_w, $dst_h);
if($size[2] == 3) {
if($file_ext === 'png') {
imagealphablending($dst, false);
imagesavealpha($dst, true);
} else if($size[2] == 1) {
} else if($file_ext === 'gif') {
$palletsize = imagecolorstotal($src);
if($src_transparency >= 0 && $src_transparency < $palletsize) {
$transparent_color = imagecolorsforindex($src, $src_transparency);
@ -391,12 +407,12 @@ function thumbnail($filename, $source_path, $target_path, $thumb_width, $thumb_h
}
}
if($size[2] == 3) {
if($file_ext === 'png') {
$bgcolor = imagecolorallocatealpha($dst, 0, 0, 0, 127);
imagefill($dst, 0, 0, $bgcolor);
imagealphablending($dst, false);
imagesavealpha($dst, true);
} else if($size[2] == 1) {
} else if($file_ext === 'gif') {
$palletsize = imagecolorstotal($src);
if($src_transparency >= 0 && $src_transparency < $palletsize) {
$transparent_color = imagecolorsforindex($src, $src_transparency);
@ -474,12 +490,12 @@ function thumbnail($filename, $source_path, $target_path, $thumb_width, $thumb_h
}
}
if($size[2] == 3) {
if($file_ext === 'png') {
$bgcolor = imagecolorallocatealpha($dst, 0, 0, 0, 127);
imagefill($dst, 0, 0, $bgcolor);
imagealphablending($dst, false);
imagesavealpha($dst, true);
} else if($size[2] == 1) {
} else if($file_ext === 'gif') {
$palletsize = imagecolorstotal($src);
if($src_transparency >= 0 && $src_transparency < $palletsize) {
$transparent_color = imagecolorsforindex($src, $src_transparency);
@ -502,22 +518,24 @@ function thumbnail($filename, $source_path, $target_path, $thumb_width, $thumb_h
UnsharpMask($dst, $val[0], $val[1], $val[2]);
}
if($size[2] == 1) {
if($file_ext === 'gif') {
imagegif($dst, $thumb_file);
} else if($size[2] == 3) {
} else if($file_ext === 'png') {
if(!defined('G5_THUMB_PNG_COMPRESS'))
$png_compress = 5;
else
$png_compress = G5_THUMB_PNG_COMPRESS;
imagepng($dst, $thumb_file, $png_compress);
} else {
} else if ($file_ext === 'jpg') {
if(!defined('G5_THUMB_JPG_QUALITY'))
$jpg_quality = 90;
else
$jpg_quality = G5_THUMB_JPG_QUALITY;
imagejpeg($dst, $thumb_file, $jpg_quality);
} else if ($file_ext === 'webp') {
imagewebp($dst, $thumb_file);
}
chmod($thumb_file, G5_FILE_PERMISSION); // 추후 삭제를 위하여 파일모드 변경
@ -695,6 +713,22 @@ and the roundoff errors in the Gaussian blur process, are welcome.
}
// 움직이는 webp 파일인지 검사한다.
// 출처) https://stackoverflow.com/questions/45190469/how-to-identify-whether-webp-image-is-static-or-animated?answertab=votes#tab-top
function is_animated_webp($filename) {
$contents = file_get_contents($filename);
$where = strpos($contents, "ANMF");
if ($where !== false){
// animated
$is_animated = true;
}
else{
// non animated
$is_animated = false;
}
return $is_animated;
}
function is_animated_gif($filename) {
static $cache = array();