/inc/image.php
PHP | 665 lines | 540 code | 71 blank | 54 comment | 127 complexity | ba2026c6983b083a36c63200b925919d MD5 | raw file
- <?php
- /*
- * Copyright (c) 2010-2013 Tinyboard Development Group
- */
- defined('TINYBOARD') or exit;
- class Image {
- public $src, $format, $image, $size;
- public function __construct($src, $format = false, $size = false) {
- global $config;
-
- $this->src = $src;
- $this->format = $format;
- if ($config['thumb_method'] == 'imagick') {
- $classname = 'ImageImagick';
- } elseif (in_array($config['thumb_method'], array('convert', 'convert+gifsicle', 'gm', 'gm+gifsicle'))) {
- $classname = 'ImageConvert';
- } else {
- $classname = 'Image' . strtoupper($this->format);
- if (!class_exists($classname)) {
- error(_('Unsupported file format: ') . $this->format);
- }
- }
-
- $this->image = new $classname($this, $size);
- if (!$this->image->valid()) {
- $this->delete();
- error($config['error']['invalidimg']);
- }
-
- $this->size = (object)array('width' => $this->image->_width(), 'height' => $this->image->_height());
- if ($this->size->width < 1 || $this->size->height < 1) {
- $this->delete();
- error($config['error']['invalidimg']);
- }
- }
-
- public function resize($extension, $max_width, $max_height) {
- global $config;
- if ($config['thumb_method'] == 'imagick') {
- $classname = 'ImageImagick';
- } elseif ($config['thumb_method'] == 'convert') {
- $classname = 'ImageConvert';
- } elseif ($config['thumb_method'] == 'convert+gifsicle') {
- $classname = 'ImageConvert';
- $gifsicle = true;
- } elseif ($config['thumb_method'] == 'gm') {
- $classname = 'ImageConvert';
- $gm = true;
- } elseif ($config['thumb_method'] == 'gm+gifsicle') {
- $classname = 'ImageConvert';
- $gm = true;
- $gifsicle = true;
- } else {
- $classname = 'Image' . strtoupper($extension);
- if (!class_exists($classname)) {
- error(_('Unsupported file format: ') . $extension);
- }
- }
-
- $thumb = new $classname(false);
- $thumb->src = $this->src;
- $thumb->format = $this->format;
- $thumb->original_width = $this->size->width;
- $thumb->original_height = $this->size->height;
-
- $x_ratio = $max_width / $this->size->width;
- $y_ratio = $max_height / $this->size->height;
-
- if (($this->size->width <= $max_width) && ($this->size->height <= $max_height)) {
- $width = $this->size->width;
- $height = $this->size->height;
- } elseif (($x_ratio * $this->size->height) < $max_height) {
- $height = ceil($x_ratio * $this->size->height);
- $width = $max_width;
- } else {
- $width = ceil($y_ratio * $this->size->width);
- $height = $max_height;
- }
-
- $thumb->_resize($this->image->image, $width, $height);
-
- return $thumb;
- }
-
- public function to($dst) {
- $this->image->to($dst);
- }
-
- public function delete() {
- file_unlink($this->src);
- }
- public function destroy() {
- $this->image->_destroy();
- }
- }
- class ImageGD {
- public function GD_create() {
- $this->image = imagecreatetruecolor($this->width, $this->height);
- }
- public function GD_copyresampled() {
- imagecopyresampled($this->image, $this->original, 0, 0, 0, 0, $this->width, $this->height, $this->original_width, $this->original_height);
- }
- public function GD_resize() {
- $this->GD_create();
- $this->GD_copyresampled();
- }
- }
- class ImageBase extends ImageGD {
- public $image, $src, $original, $original_width, $original_height, $width, $height;
- public function valid() {
- return (bool)$this->image;
- }
-
- public function __construct($img, $size = false) {
- if (method_exists($this, 'init'))
- $this->init();
-
- if ($size && $size[0] > 0 && $size[1] > 0) {
- $this->width = $size[0];
- $this->height = $size[1];
- }
-
- if ($img !== false) {
- $this->src = $img->src;
- $this->from();
- }
- }
-
- public function _width() {
- if (method_exists($this, 'width'))
- return $this->width();
- // use default GD functions
- return imagesx($this->image);
- }
- public function _height() {
- if (method_exists($this, 'height'))
- return $this->height();
- // use default GD functions
- return imagesy($this->image);
- }
- public function _destroy() {
- if (method_exists($this, 'destroy'))
- return $this->destroy();
- // use default GD functions
- return imagedestroy($this->image);
- }
- public function _resize($original, $width, $height) {
- $this->original = &$original;
- $this->width = $width;
- $this->height = $height;
-
- if (method_exists($this, 'resize'))
- $this->resize();
- else
- // use default GD functions
- $this->GD_resize();
- }
- }
- class ImageImagick extends ImageBase {
- public function init() {
- $this->image = new Imagick();
- $this->image->setBackgroundColor(new ImagickPixel('transparent'));
- }
- public function from() {
- try {
- $this->image->readImage($this->src);
- } catch(ImagickException $e) {
- // invalid image
- $this->image = false;
- }
- }
- public function to($src) {
- global $config;
- if ($config['strip_exif']) {
- $this->image->stripImage();
- }
- if (preg_match('/\.gif$/i', $src))
- $this->image->writeImages($src, true);
- else
- $this->image->writeImage($src);
- }
- public function width() {
- return $this->image->getImageWidth();
- }
- public function height() {
- return $this->image->getImageHeight();
- }
- public function destroy() {
- return $this->image->destroy();
- }
- public function resize() {
- global $config;
-
- if ($this->format == 'gif' && ($config['thumb_ext'] == 'gif' || $config['thumb_ext'] == '')) {
- $this->image = new Imagick();
- $this->image->setFormat('gif');
-
- $keep_frames = array();
- for ($i = 0; $i < $this->original->getNumberImages(); $i += floor($this->original->getNumberImages() / $config['thumb_keep_animation_frames']))
- $keep_frames[] = $i;
-
- $i = 0;
- $delay = 0;
- foreach ($this->original as $frame) {
- $delay += $frame->getImageDelay();
-
- if (in_array($i, $keep_frames)) {
- // $frame->scaleImage($this->width, $this->height, false);
- $frame->sampleImage($this->width, $this->height);
- $frame->setImagePage($this->width, $this->height, 0, 0);
- $frame->setImageDelay($delay);
- $delay = 0;
-
- $this->image->addImage($frame->getImage());
- }
- $i++;
- }
- } else {
- $this->image = clone $this->original;
- $this->image->scaleImage($this->width, $this->height, false);
- }
- }
- }
- class ImageConvert extends ImageBase {
- public $width, $height, $temp, $gm = false, $gifsicle = false;
-
- public function init() {
- global $config;
-
- if ($config['thumb_method'] == 'gm' || $config['thumb_method'] == 'gm+gifsicle')
- $this->gm = true;
- if ($config['thumb_method'] == 'convert+gifsicle' || $config['thumb_method'] == 'gm+gifsicle')
- $this->gifsicle = true;
-
- $this->temp = false;
- }
- public function get_size($src, $try_gd_first = true) {
- if ($try_gd_first) {
- if ($size = @getimagesize($src))
- return $size;
- }
- $size = shell_exec_error(($this->gm ? 'gm ' : '') . 'identify -format "%w %h" ' . escapeshellarg($src . '[0]'));
- if (preg_match('/^(\d+) (\d+)$/', $size, $m))
- return array($m[1], $m[2]);
- return false;
- }
- public function from() {
- if ($this->width > 0 && $this->height > 0) {
- $this->image = true;
- return;
- }
- $size = $this->get_size($this->src, false);
- if ($size) {
- $this->width = $size[0];
- $this->height = $size[1];
-
- $this->image = true;
- } else {
- // mark as invalid
- $this->image = false;
- }
- }
- public function to($src) {
- global $config;
-
- if (!$this->temp) {
- if ($config['strip_exif']) {
- if($error = shell_exec_error(($this->gm ? 'gm ' : '') . 'convert ' .
- escapeshellarg($this->src) . ' -auto-orient -strip ' . escapeshellarg($src))) {
- $this->destroy();
- error(_('Failed to redraw image!'), null, $error);
- }
- } else {
- if($error = shell_exec_error(($this->gm ? 'gm ' : '') . 'convert ' .
- escapeshellarg($this->src) . ' -auto-orient ' . escapeshellarg($src))) {
- $this->destroy();
- error(_('Failed to redraw image!'), null, $error);
- }
- }
- } else {
- rename($this->temp, $src);
- chmod($src, 0664);
- }
- }
- public function width() {
- return $this->width;
- }
- public function height() {
- return $this->height;
- }
- public function destroy() {
- @unlink($this->temp);
- $this->temp = false;
- }
- public function resize() {
- global $config;
-
- if ($this->temp) {
- // remove old
- $this->destroy();
- }
-
- $this->temp = tempnam($config['tmp'], 'convert');
-
- $config['thumb_keep_animation_frames'] = (int)$config['thumb_keep_animation_frames'];
-
- if ($this->format == 'gif' && ($config['thumb_ext'] == 'gif' || $config['thumb_ext'] == '') && $config['thumb_keep_animation_frames'] > 1) {
- if ($this->gifsicle) {
- if (($error = shell_exec("gifsicle -w --unoptimize -O2 --resize {$this->width}x{$this->height} < " .
- escapeshellarg($this->src . '') . " \"#0-{$config['thumb_keep_animation_frames']}\" -o " .
- escapeshellarg($this->temp))) || !file_exists($this->temp)) {
- $this->destroy();
- error(_('Failed to resize image!'), null, $error);
- }
- } else {
- if ($config['convert_manual_orient'] && ($this->format == 'jpg' || $this->format == 'jpeg'))
- $convert_args = str_replace('-auto-orient', ImageConvert::jpeg_exif_orientation($this->src), $config['convert_args']);
- elseif ($config['convert_manual_orient'])
- $convert_args = str_replace('-auto-orient', '', $config['convert_args']);
- else
- $convert_args = &$config['convert_args'];
- if (($error = shell_exec_error(($this->gm ? 'gm ' : '') . 'convert ' .
- sprintf($convert_args,
- $this->width,
- $this->height,
- escapeshellarg($this->src),
- $this->width,
- $this->height,
- escapeshellarg($this->temp)))) || !file_exists($this->temp)) {
- $this->destroy();
- error(_('Failed to resize image!'), null, $error);
- }
- if ($size = $this->get_size($this->temp)) {
- $this->width = $size[0];
- $this->height = $size[1];
- }
- }
- } else {
- if ($config['convert_manual_orient'] && ($this->format == 'jpg' || $this->format == 'jpeg'))
- $convert_args = str_replace('-auto-orient', ImageConvert::jpeg_exif_orientation($this->src), $config['convert_args']);
- elseif ($config['convert_manual_orient'])
- $convert_args = str_replace('-auto-orient', '', $config['convert_args']);
- else
- $convert_args = &$config['convert_args'];
- if (($error = shell_exec_error(($this->gm ? 'gm ' : '') . 'convert ' .
- sprintf($convert_args,
- $this->width,
- $this->height,
- escapeshellarg($this->src . '[0]'),
- $this->width,
- $this->height,
- escapeshellarg('jpg:'.$this->temp)))) || !file_exists($this->temp)) {
- if (strpos($error, "known incorrect sRGB profile") === false &&
- strpos($error, "iCCP: Not recognizing known sRGB profile that has been edited") === false) {
- $this->destroy();
- error(_('Failed to resize image!')." "._('Details: ').nl2br(htmlspecialchars($error)), null, array('convert_error' => $error));
- }
- if (!file_exists($this->temp)) {
- $this->destroy();
- error(_('Failed to resize image!'), null, $error);
- }
- }
- if ($size = $this->get_size($this->temp)) {
- $this->width = $size[0];
- $this->height = $size[1];
- }
- }
- }
-
- // For when -auto-orient doesn't exist (older versions)
- static public function jpeg_exif_orientation($src, $exif = false) {
- if (!$exif) {
- $exif = @exif_read_data($src);
- if (!isset($exif['Orientation']))
- return false;
- }
- switch($exif['Orientation']) {
- case 1:
- // Normal
- return false;
- case 2:
- // 888888
- // 88
- // 8888
- // 88
- // 88
-
- return '-flop';
- case 3:
-
- // 88
- // 88
- // 8888
- // 88
- // 888888
-
- return '-flip -flop';
- case 4:
- // 88
- // 88
- // 8888
- // 88
- // 888888
-
- return '-flip';
- case 5:
- // 8888888888
- // 88 88
- // 88
-
- return '-rotate 90 -flop';
- case 6:
- // 88
- // 88 88
- // 8888888888
-
- return '-rotate 90';
- case 7:
- // 88
- // 88 88
- // 8888888888
-
- return '-rotate "-90" -flop';
- case 8:
- // 8888888888
- // 88 88
- // 88
-
- return '-rotate "-90"';
- }
- }
- }
- class ImagePNG extends ImageBase {
- public function from() {
- $this->image = @imagecreatefrompng($this->src);
- }
- public function to($src) {
- global $config;
- imagepng($this->image, $src);
- }
- public function resize() {
- $this->GD_create();
- imagecolortransparent($this->image, imagecolorallocatealpha($this->image, 0, 0, 0, 0));
- imagesavealpha($this->image, true);
- imagealphablending($this->image, false);
- $this->GD_copyresampled();
- }
- }
- class ImageGIF extends ImageBase {
- public function from() {
- $this->image = @imagecreatefromgif($this->src);
- }
- public function to($src) {
- imagegif ($this->image, $src);
- }
- public function resize() {
- $this->GD_create();
- imagecolortransparent($this->image, imagecolorallocatealpha($this->image, 0, 0, 0, 0));
- imagesavealpha($this->image, true);
- $this->GD_copyresampled();
- }
- }
- class ImageJPG extends ImageBase {
- public function from() {
- $this->image = @imagecreatefromjpeg($this->src);
- }
- public function to($src) {
- imagejpeg($this->image, $src);
- }
- }
- class ImageJPEG extends ImageJPG {
- }
- class ImageBMP extends ImageBase {
- public function from() {
- $this->image = @imagecreatefrombmp($this->src);
- }
- public function to($src) {
- imagebmp($this->image, $src);
- }
- }
- /*********************************************/
- /* Fonction: imagecreatefrombmp */
- /* Author: DHKold */
- /* Contact: admin@dhkold.com */
- /* Date: The 15th of June 2005 */
- /* Version: 2.0B */
- /*********************************************/
- function imagecreatefrombmp($filename) {
- if (! $f1 = fopen($filename,"rb")) return FALSE;
- $FILE = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14));
- if ($FILE['file_type'] != 19778) return FALSE;
- $BMP = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'.
- '/Vcompression/Vsize_bitmap/Vhoriz_resolution'.
- '/Vvert_resolution/Vcolors_used/Vcolors_important', fread($f1,40));
- $BMP['colors'] = pow(2,$BMP['bits_per_pixel']);
- if ($BMP['size_bitmap'] == 0) $BMP['size_bitmap'] = $FILE['file_size'] - $FILE['bitmap_offset'];
- $BMP['bytes_per_pixel'] = $BMP['bits_per_pixel']/8;
- $BMP['bytes_per_pixel2'] = ceil($BMP['bytes_per_pixel']);
- $BMP['decal'] = ($BMP['width']*$BMP['bytes_per_pixel']/4);
- $BMP['decal'] -= floor($BMP['width']*$BMP['bytes_per_pixel']/4);
- $BMP['decal'] = 4-(4*$BMP['decal']);
- if ($BMP['decal'] == 4) $BMP['decal'] = 0;
- $PALETTE = array();
- if ($BMP['colors'] < 16777216)
- {
- $PALETTE = unpack('V'.$BMP['colors'], fread($f1,$BMP['colors']*4));
- }
- $IMG = fread($f1,$BMP['size_bitmap']);
- $VIDE = chr(0);
- $res = imagecreatetruecolor($BMP['width'],$BMP['height']);
- $P = 0;
- $Y = $BMP['height']-1;
- while ($Y >= 0)
- {
- $X=0;
- while ($X < $BMP['width'])
- {
- if ($BMP['bits_per_pixel'] == 24)
- $COLOR = unpack("V",substr($IMG,$P,3).$VIDE);
- elseif ($BMP['bits_per_pixel'] == 16)
- {
- $COLOR = unpack("n",substr($IMG,$P,2));
- $COLOR[1] = $PALETTE[$COLOR[1]+1];
- }
- elseif ($BMP['bits_per_pixel'] == 8)
- {
- $COLOR = unpack("n",$VIDE.substr($IMG,$P,1));
- $COLOR[1] = $PALETTE[$COLOR[1]+1];
- }
- elseif ($BMP['bits_per_pixel'] == 4)
- {
- $COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1));
- if (($P*2)%2 == 0) $COLOR[1] = ($COLOR[1] >> 4) ; else $COLOR[1] = ($COLOR[1] & 0x0F);
- $COLOR[1] = $PALETTE[$COLOR[1]+1];
- }
- elseif ($BMP['bits_per_pixel'] == 1)
- {
- $COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1));
- if (($P*8)%8 == 0) $COLOR[1] = $COLOR[1] >>7;
- elseif (($P*8)%8 == 1) $COLOR[1] = ($COLOR[1] & 0x40)>>6;
- elseif (($P*8)%8 == 2) $COLOR[1] = ($COLOR[1] & 0x20)>>5;
- elseif (($P*8)%8 == 3) $COLOR[1] = ($COLOR[1] & 0x10)>>4;
- elseif (($P*8)%8 == 4) $COLOR[1] = ($COLOR[1] & 0x8)>>3;
- elseif (($P*8)%8 == 5) $COLOR[1] = ($COLOR[1] & 0x4)>>2;
- elseif (($P*8)%8 == 6) $COLOR[1] = ($COLOR[1] & 0x2)>>1;
- elseif (($P*8)%8 == 7) $COLOR[1] = ($COLOR[1] & 0x1);
- $COLOR[1] = $PALETTE[$COLOR[1]+1];
- }
- else
- return FALSE;
- imagesetpixel($res,$X,$Y,$COLOR[1]);
- $X++;
- $P += $BMP['bytes_per_pixel'];
- }
- $Y--;
- $P+=$BMP['decal'];
- }
- fclose($f1);
- return $res;
- }
- function imagebmp(&$img, $filename='') {
- $widthOrig = imagesx($img);
- $widthFloor = ((floor($widthOrig/16))*16);
- $widthCeil = ((ceil($widthOrig/16))*16);
- $height = imagesy($img);
- $size = ($widthCeil*$height*3)+54;
- // Bitmap File Header
- $result = 'BM'; // header (2b)
- $result .= int_to_dword($size); // size of file (4b)
- $result .= int_to_dword(0); // reserved (4b)
- $result .= int_to_dword(54); // byte location in the file which is first byte of IMAGE (4b)
- // Bitmap Info Header
- $result .= int_to_dword(40); // Size of BITMAPINFOHEADER (4b)
- $result .= int_to_dword($widthCeil); // width of bitmap (4b)
- $result .= int_to_dword($height); // height of bitmap (4b)
- $result .= int_to_word(1); // biPlanes = 1 (2b)
- $result .= int_to_word(24); // biBitCount = {1 (mono) or 4 (16 clr ) or 8 (256 clr) or 24 (16 Mil)} (2b
- $result .= int_to_dword(0); // RLE COMPRESSION (4b)
- $result .= int_to_dword(0); // width x height (4b)
- $result .= int_to_dword(0); // biXPelsPerMeter (4b)
- $result .= int_to_dword(0); // biYPelsPerMeter (4b)
- $result .= int_to_dword(0); // Number of palettes used (4b)
- $result .= int_to_dword(0); // Number of important colour (4b)
- // is faster than chr()
- $arrChr = array();
- for ($i=0; $i<256; $i++){
- $arrChr[$i] = chr($i);
- }
- // creates image data
- $bgfillcolor = array('red'=>0, 'green'=>0, 'blue'=>0);
- // bottom to top - left to right - attention blue green red !!!
- $y=$height-1;
- for ($y2=0; $y2<$height; $y2++) {
- for ($x=0; $x<$widthFloor; ) {
- $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
- $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
- $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
- $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
- $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
- $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
- $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
- $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
- $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
- $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
- $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
- $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
- $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
- $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
- $rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
- $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
- }
- for ($x=$widthFloor; $x<$widthCeil; $x++) {
- $rgb = ($x<$widthOrig) ? imagecolorsforindex($img, imagecolorat($img, $x, $y)) : $bgfillcolor;
- $result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
- }
- $y--;
- }
- // see imagegif
- if ($filename == '') {
- echo $result;
- } else {
- $file = fopen($filename, 'wb');
- fwrite($file, $result);
- fclose($file);
- }
- }
- // imagebmp helpers
- function int_to_dword($n) {
- return chr($n & 255).chr(($n >> 8) & 255).chr(($n >> 16) & 255).chr(($n >> 24) & 255);
- }
- function int_to_word($n) {
- return chr($n & 255).chr(($n >> 8) & 255);
- }