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1194 lines
34 KiB
1194 lines
34 KiB
<?php |
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/** |
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* @copyright Copyright (c) 2016, ownCloud, Inc. |
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* |
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* @author Andreas Fischer <bantu@owncloud.com> |
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* @author Bart Visscher <bartv@thisnet.nl> |
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* @author Bartek Przybylski <bart.p.pl@gmail.com> |
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* @author Björn Schießle <bjoern@schiessle.org> |
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* @author Byron Marohn <combustible@live.com> |
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* @author Christopher Schäpers <kondou@ts.unde.re> |
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* @author Georg Ehrke <oc.list@georgehrke.com> |
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* @author j-ed <juergen@eisfair.org> |
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* @author Joas Schilling <coding@schilljs.com> |
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* @author Johannes Willnecker <johannes@willnecker.com> |
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* @author Julius Härtl <jus@bitgrid.net> |
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* @author Jörn Friedrich Dreyer <jfd@butonic.de> |
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* @author Lukas Reschke <lukas@statuscode.ch> |
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* @author Morris Jobke <hey@morrisjobke.de> |
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* @author Olivier Paroz <github@oparoz.com> |
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* @author Robin Appelman <robin@icewind.nl> |
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* @author Roeland Jago Douma <roeland@famdouma.nl> |
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* @author Thomas Müller <thomas.mueller@tmit.eu> |
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* @author Thomas Tanghus <thomas@tanghus.net> |
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* @author Victor Dubiniuk <dubiniuk@owncloud.com> |
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* |
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* @license AGPL-3.0 |
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* |
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* This code is free software: you can redistribute it and/or modify |
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* it under the terms of the GNU Affero General Public License, version 3, |
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* as published by the Free Software Foundation. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU Affero General Public License for more details. |
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* |
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* You should have received a copy of the GNU Affero General Public License, version 3, |
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* along with this program. If not, see <http://www.gnu.org/licenses/> |
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* |
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*/ |
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|
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/** |
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* Class for basic image manipulation |
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*/ |
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class OC_Image implements \OCP\IImage { |
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/** @var false|resource */ |
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protected $resource = false; // tmp resource. |
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/** @var int */ |
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protected $imageType = IMAGETYPE_PNG; // Default to png if file type isn't evident. |
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/** @var string */ |
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protected $mimeType = 'image/png'; // Default to png |
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/** @var int */ |
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protected $bitDepth = 24; |
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/** @var null|string */ |
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protected $filePath = null; |
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/** @var finfo */ |
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private $fileInfo; |
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/** @var \OCP\ILogger */ |
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private $logger; |
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/** @var \OCP\IConfig */ |
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private $config; |
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/** @var array */ |
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private $exif; |
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|
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/** |
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* Constructor. |
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* |
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* @param resource|string $imageRef The path to a local file, a base64 encoded string or a resource created by |
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* an imagecreate* function. |
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* @param \OCP\ILogger $logger |
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* @param \OCP\IConfig $config |
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* @throws \InvalidArgumentException in case the $imageRef parameter is not null |
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*/ |
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public function __construct($imageRef = null, \OCP\ILogger $logger = null, \OCP\IConfig $config = null) { |
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$this->logger = $logger; |
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if ($logger === null) { |
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$this->logger = \OC::$server->getLogger(); |
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} |
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$this->config = $config; |
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if ($config === null) { |
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$this->config = \OC::$server->getConfig(); |
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} |
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|
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if (\OC_Util::fileInfoLoaded()) { |
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$this->fileInfo = new finfo(FILEINFO_MIME_TYPE); |
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} |
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|
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if ($imageRef !== null) { |
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throw new \InvalidArgumentException('The first parameter in the constructor is not supported anymore. Please use any of the load* methods of the image object to load an image.'); |
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} |
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} |
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|
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/** |
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* Determine whether the object contains an image resource. |
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* |
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* @return bool |
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*/ |
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public function valid() { // apparently you can't name a method 'empty'... |
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return is_resource($this->resource); |
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} |
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|
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/** |
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* Returns the MIME type of the image or an empty string if no image is loaded. |
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* |
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* @return string |
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*/ |
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public function mimeType() { |
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return $this->valid() ? $this->mimeType : ''; |
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} |
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|
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/** |
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* Returns the width of the image or -1 if no image is loaded. |
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* |
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* @return int |
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*/ |
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public function width() { |
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return $this->valid() ? imagesx($this->resource) : -1; |
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} |
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|
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/** |
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* Returns the height of the image or -1 if no image is loaded. |
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* |
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* @return int |
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*/ |
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public function height() { |
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return $this->valid() ? imagesy($this->resource) : -1; |
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} |
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|
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/** |
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* Returns the width when the image orientation is top-left. |
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* |
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* @return int |
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*/ |
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public function widthTopLeft() { |
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$o = $this->getOrientation(); |
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$this->logger->debug('OC_Image->widthTopLeft() Orientation: ' . $o, array('app' => 'core')); |
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switch ($o) { |
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case -1: |
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case 1: |
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case 2: // Not tested |
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case 3: |
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case 4: // Not tested |
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return $this->width(); |
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case 5: // Not tested |
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case 6: |
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case 7: // Not tested |
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case 8: |
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return $this->height(); |
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} |
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return $this->width(); |
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} |
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/** |
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* Returns the height when the image orientation is top-left. |
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* |
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* @return int |
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*/ |
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public function heightTopLeft() { |
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$o = $this->getOrientation(); |
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$this->logger->debug('OC_Image->heightTopLeft() Orientation: ' . $o, array('app' => 'core')); |
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switch ($o) { |
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case -1: |
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case 1: |
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case 2: // Not tested |
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case 3: |
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case 4: // Not tested |
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return $this->height(); |
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case 5: // Not tested |
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case 6: |
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case 7: // Not tested |
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case 8: |
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return $this->width(); |
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} |
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return $this->height(); |
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} |
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|
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/** |
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* Outputs the image. |
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* |
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* @param string $mimeType |
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* @return bool |
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*/ |
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public function show($mimeType = null) { |
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if ($mimeType === null) { |
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$mimeType = $this->mimeType(); |
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} |
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header('Content-Type: ' . $mimeType); |
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return $this->_output(null, $mimeType); |
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} |
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/** |
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* Saves the image. |
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* |
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* @param string $filePath |
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* @param string $mimeType |
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* @return bool |
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*/ |
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public function save($filePath = null, $mimeType = null) { |
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if ($mimeType === null) { |
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$mimeType = $this->mimeType(); |
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} |
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if ($filePath === null) { |
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if ($this->filePath === null) { |
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$this->logger->error(__METHOD__ . '(): called with no path.', array('app' => 'core')); |
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return false; |
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} else { |
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$filePath = $this->filePath; |
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} |
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} |
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return $this->_output($filePath, $mimeType); |
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} |
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/** |
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* Outputs/saves the image. |
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* |
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* @param string $filePath |
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* @param string $mimeType |
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* @return bool |
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* @throws Exception |
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*/ |
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private function _output($filePath = null, $mimeType = null) { |
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if ($filePath) { |
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if (!file_exists(dirname($filePath))) { |
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mkdir(dirname($filePath), 0777, true); |
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} |
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$isWritable = is_writable(dirname($filePath)); |
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if (!$isWritable) { |
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$this->logger->error(__METHOD__ . '(): Directory \'' . dirname($filePath) . '\' is not writable.', array('app' => 'core')); |
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return false; |
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} elseif ($isWritable && file_exists($filePath) && !is_writable($filePath)) { |
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$this->logger->error(__METHOD__ . '(): File \'' . $filePath . '\' is not writable.', array('app' => 'core')); |
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return false; |
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} |
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} |
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if (!$this->valid()) { |
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return false; |
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} |
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$imageType = $this->imageType; |
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if ($mimeType !== null) { |
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switch ($mimeType) { |
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case 'image/gif': |
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$imageType = IMAGETYPE_GIF; |
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break; |
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case 'image/jpeg': |
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$imageType = IMAGETYPE_JPEG; |
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break; |
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case 'image/png': |
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$imageType = IMAGETYPE_PNG; |
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break; |
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case 'image/x-xbitmap': |
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$imageType = IMAGETYPE_XBM; |
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break; |
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case 'image/bmp': |
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case 'image/x-ms-bmp': |
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$imageType = IMAGETYPE_BMP; |
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break; |
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default: |
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throw new Exception('\OC_Image::_output(): "' . $mimeType . '" is not supported when forcing a specific output format'); |
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} |
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} |
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switch ($imageType) { |
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case IMAGETYPE_GIF: |
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$retVal = imagegif($this->resource, $filePath); |
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break; |
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case IMAGETYPE_JPEG: |
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$retVal = imagejpeg($this->resource, $filePath, $this->getJpegQuality()); |
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break; |
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case IMAGETYPE_PNG: |
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$retVal = imagepng($this->resource, $filePath); |
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break; |
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case IMAGETYPE_XBM: |
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if (function_exists('imagexbm')) { |
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$retVal = imagexbm($this->resource, $filePath); |
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} else { |
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throw new Exception('\OC_Image::_output(): imagexbm() is not supported.'); |
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} |
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break; |
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case IMAGETYPE_WBMP: |
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$retVal = imagewbmp($this->resource, $filePath); |
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break; |
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case IMAGETYPE_BMP: |
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$retVal = imagebmp($this->resource, $filePath, $this->bitDepth); |
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break; |
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default: |
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$retVal = imagepng($this->resource, $filePath); |
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} |
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return $retVal; |
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} |
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|
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/** |
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* Prints the image when called as $image(). |
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*/ |
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public function __invoke() { |
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return $this->show(); |
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} |
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|
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/** |
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* @param resource Returns the image resource in any. |
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* @throws \InvalidArgumentException in case the supplied resource does not have the type "gd" |
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*/ |
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public function setResource($resource) { |
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if (get_resource_type($resource) === 'gd') { |
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$this->resource = $resource; |
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return; |
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} |
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throw new \InvalidArgumentException('Supplied resource is not of type "gd".'); |
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} |
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/** |
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* @return resource Returns the image resource in any. |
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*/ |
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public function resource() { |
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return $this->resource; |
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} |
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|
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/** |
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* @return string Returns the mimetype of the data. Returns the empty string |
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* if the data is not valid. |
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*/ |
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public function dataMimeType() { |
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if (!$this->valid()) { |
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return ''; |
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} |
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|
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switch ($this->mimeType) { |
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case 'image/png': |
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case 'image/jpeg': |
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case 'image/gif': |
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return $this->mimeType; |
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default: |
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return 'image/png'; |
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} |
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} |
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|
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/** |
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* @return null|string Returns the raw image data. |
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*/ |
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public function data() { |
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if (!$this->valid()) { |
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return null; |
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} |
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ob_start(); |
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switch ($this->mimeType) { |
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case "image/png": |
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$res = imagepng($this->resource); |
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break; |
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case "image/jpeg": |
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$quality = $this->getJpegQuality(); |
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if ($quality !== null) { |
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$res = imagejpeg($this->resource, null, $quality); |
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} else { |
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$res = imagejpeg($this->resource); |
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} |
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break; |
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case "image/gif": |
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$res = imagegif($this->resource); |
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break; |
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default: |
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$res = imagepng($this->resource); |
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$this->logger->info('OC_Image->data. Could not guess mime-type, defaulting to png', array('app' => 'core')); |
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break; |
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} |
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if (!$res) { |
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$this->logger->error('OC_Image->data. Error getting image data.', array('app' => 'core')); |
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} |
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return ob_get_clean(); |
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} |
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|
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/** |
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* @return string - base64 encoded, which is suitable for embedding in a VCard. |
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*/ |
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public function __toString() { |
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return base64_encode($this->data()); |
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} |
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|
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/** |
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* @return int|null |
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*/ |
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protected function getJpegQuality() { |
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$quality = $this->config->getAppValue('preview', 'jpeg_quality', 90); |
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if ($quality !== null) { |
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$quality = min(100, max(10, (int) $quality)); |
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} |
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return $quality; |
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} |
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|
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/** |
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* (I'm open for suggestions on better method name ;) |
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* Get the orientation based on EXIF data. |
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* |
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* @return int The orientation or -1 if no EXIF data is available. |
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*/ |
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public function getOrientation() { |
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if ($this->exif !== null) { |
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return $this->exif['Orientation']; |
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} |
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|
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if ($this->imageType !== IMAGETYPE_JPEG) { |
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$this->logger->debug('OC_Image->fixOrientation() Image is not a JPEG.', array('app' => 'core')); |
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return -1; |
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} |
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if (!is_callable('exif_read_data')) { |
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$this->logger->debug('OC_Image->fixOrientation() Exif module not enabled.', array('app' => 'core')); |
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return -1; |
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} |
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if (!$this->valid()) { |
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$this->logger->debug('OC_Image->fixOrientation() No image loaded.', array('app' => 'core')); |
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return -1; |
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} |
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if (is_null($this->filePath) || !is_readable($this->filePath)) { |
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$this->logger->debug('OC_Image->fixOrientation() No readable file path set.', array('app' => 'core')); |
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return -1; |
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} |
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$exif = @exif_read_data($this->filePath, 'IFD0'); |
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if (!$exif) { |
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return -1; |
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} |
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if (!isset($exif['Orientation'])) { |
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return -1; |
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} |
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$this->exif = $exif; |
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return $exif['Orientation']; |
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} |
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|
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public function readExif($data) { |
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if (!is_callable('exif_read_data')) { |
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$this->logger->debug('OC_Image->fixOrientation() Exif module not enabled.', array('app' => 'core')); |
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return; |
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} |
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if (!$this->valid()) { |
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$this->logger->debug('OC_Image->fixOrientation() No image loaded.', array('app' => 'core')); |
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return; |
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} |
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|
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$exif = @exif_read_data('data://image/jpeg;base64,' . base64_encode($data)); |
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if (!$exif) { |
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return; |
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} |
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if (!isset($exif['Orientation'])) { |
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return; |
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} |
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$this->exif = $exif; |
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} |
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|
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/** |
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* (I'm open for suggestions on better method name ;) |
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* Fixes orientation based on EXIF data. |
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* |
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* @return bool |
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*/ |
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public function fixOrientation() { |
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$o = $this->getOrientation(); |
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$this->logger->debug('OC_Image->fixOrientation() Orientation: ' . $o, array('app' => 'core')); |
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$rotate = 0; |
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$flip = false; |
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switch ($o) { |
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case -1: |
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return false; //Nothing to fix |
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case 1: |
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$rotate = 0; |
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break; |
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case 2: |
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$rotate = 0; |
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$flip = true; |
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break; |
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case 3: |
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$rotate = 180; |
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break; |
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case 4: |
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$rotate = 180; |
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$flip = true; |
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break; |
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case 5: |
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$rotate = 90; |
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$flip = true; |
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break; |
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case 6: |
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$rotate = 270; |
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break; |
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case 7: |
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$rotate = 270; |
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$flip = true; |
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break; |
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case 8: |
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$rotate = 90; |
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break; |
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} |
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if($flip && function_exists('imageflip')) { |
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imageflip($this->resource, IMG_FLIP_HORIZONTAL); |
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} |
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if ($rotate) { |
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$res = imagerotate($this->resource, $rotate, 0); |
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if ($res) { |
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if (imagealphablending($res, true)) { |
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if (imagesavealpha($res, true)) { |
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imagedestroy($this->resource); |
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$this->resource = $res; |
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return true; |
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} else { |
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$this->logger->debug('OC_Image->fixOrientation() Error during alpha-saving', array('app' => 'core')); |
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return false; |
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} |
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} else { |
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$this->logger->debug('OC_Image->fixOrientation() Error during alpha-blending', array('app' => 'core')); |
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return false; |
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} |
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} else { |
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$this->logger->debug('OC_Image->fixOrientation() Error during orientation fixing', array('app' => 'core')); |
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return false; |
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} |
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} |
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return false; |
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} |
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|
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/** |
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* Loads an image from an open file handle. |
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* It is the responsibility of the caller to position the pointer at the correct place and to close the handle again. |
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* |
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* @param resource $handle |
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* @return resource|false An image resource or false on error |
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*/ |
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public function loadFromFileHandle($handle) { |
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$contents = stream_get_contents($handle); |
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if ($this->loadFromData($contents)) { |
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return $this->resource; |
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} |
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return false; |
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} |
|
|
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/** |
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* Loads an image from a local file. |
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* |
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* @param bool|string $imagePath The path to a local file. |
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* @return bool|resource An image resource or false on error |
|
*/ |
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public function loadFromFile($imagePath = false) { |
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// exif_imagetype throws "read error!" if file is less than 12 byte |
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if (!@is_file($imagePath) || !file_exists($imagePath) || filesize($imagePath) < 12 || !is_readable($imagePath)) { |
|
return false; |
|
} |
|
$iType = exif_imagetype($imagePath); |
|
switch ($iType) { |
|
case IMAGETYPE_GIF: |
|
if (imagetypes() & IMG_GIF) { |
|
$this->resource = imagecreatefromgif($imagePath); |
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// Preserve transparency |
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imagealphablending($this->resource, true); |
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imagesavealpha($this->resource, true); |
|
} else { |
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$this->logger->debug('OC_Image->loadFromFile, GIF images not supported: ' . $imagePath, array('app' => 'core')); |
|
} |
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break; |
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case IMAGETYPE_JPEG: |
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if (imagetypes() & IMG_JPG) { |
|
if (getimagesize($imagePath) !== false) { |
|
$this->resource = @imagecreatefromjpeg($imagePath); |
|
} else { |
|
$this->logger->debug('OC_Image->loadFromFile, JPG image not valid: ' . $imagePath, array('app' => 'core')); |
|
} |
|
} else { |
|
$this->logger->debug('OC_Image->loadFromFile, JPG images not supported: ' . $imagePath, array('app' => 'core')); |
|
} |
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break; |
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case IMAGETYPE_PNG: |
|
if (imagetypes() & IMG_PNG) { |
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$this->resource = @imagecreatefrompng($imagePath); |
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// Preserve transparency |
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imagealphablending($this->resource, true); |
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imagesavealpha($this->resource, true); |
|
} else { |
|
$this->logger->debug('OC_Image->loadFromFile, PNG images not supported: ' . $imagePath, array('app' => 'core')); |
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} |
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break; |
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case IMAGETYPE_XBM: |
|
if (imagetypes() & IMG_XPM) { |
|
$this->resource = @imagecreatefromxbm($imagePath); |
|
} else { |
|
$this->logger->debug('OC_Image->loadFromFile, XBM/XPM images not supported: ' . $imagePath, array('app' => 'core')); |
|
} |
|
break; |
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case IMAGETYPE_WBMP: |
|
if (imagetypes() & IMG_WBMP) { |
|
$this->resource = @imagecreatefromwbmp($imagePath); |
|
} else { |
|
$this->logger->debug('OC_Image->loadFromFile, WBMP images not supported: ' . $imagePath, array('app' => 'core')); |
|
} |
|
break; |
|
case IMAGETYPE_BMP: |
|
$this->resource = $this->imagecreatefrombmp($imagePath); |
|
break; |
|
/* |
|
case IMAGETYPE_TIFF_II: // (intel byte order) |
|
break; |
|
case IMAGETYPE_TIFF_MM: // (motorola byte order) |
|
break; |
|
case IMAGETYPE_JPC: |
|
break; |
|
case IMAGETYPE_JP2: |
|
break; |
|
case IMAGETYPE_JPX: |
|
break; |
|
case IMAGETYPE_JB2: |
|
break; |
|
case IMAGETYPE_SWC: |
|
break; |
|
case IMAGETYPE_IFF: |
|
break; |
|
case IMAGETYPE_ICO: |
|
break; |
|
case IMAGETYPE_SWF: |
|
break; |
|
case IMAGETYPE_PSD: |
|
break; |
|
*/ |
|
default: |
|
|
|
// this is mostly file created from encrypted file |
|
$this->resource = imagecreatefromstring(\OC\Files\Filesystem::file_get_contents(\OC\Files\Filesystem::getLocalPath($imagePath))); |
|
$iType = IMAGETYPE_PNG; |
|
$this->logger->debug('OC_Image->loadFromFile, Default', array('app' => 'core')); |
|
break; |
|
} |
|
if ($this->valid()) { |
|
$this->imageType = $iType; |
|
$this->mimeType = image_type_to_mime_type($iType); |
|
$this->filePath = $imagePath; |
|
} |
|
return $this->resource; |
|
} |
|
|
|
/** |
|
* Loads an image from a string of data. |
|
* |
|
* @param string $str A string of image data as read from a file. |
|
* @return bool|resource An image resource or false on error |
|
*/ |
|
public function loadFromData($str) { |
|
if (is_resource($str)) { |
|
return false; |
|
} |
|
$this->resource = @imagecreatefromstring($str); |
|
if ($this->fileInfo) { |
|
$this->mimeType = $this->fileInfo->buffer($str); |
|
} |
|
if (is_resource($this->resource)) { |
|
imagealphablending($this->resource, false); |
|
imagesavealpha($this->resource, true); |
|
} |
|
|
|
if (!$this->resource) { |
|
$this->logger->debug('OC_Image->loadFromFile, could not load', array('app' => 'core')); |
|
return false; |
|
} |
|
return $this->resource; |
|
} |
|
|
|
/** |
|
* Loads an image from a base64 encoded string. |
|
* |
|
* @param string $str A string base64 encoded string of image data. |
|
* @return bool|resource An image resource or false on error |
|
*/ |
|
public function loadFromBase64($str) { |
|
if (!is_string($str)) { |
|
return false; |
|
} |
|
$data = base64_decode($str); |
|
if ($data) { // try to load from string data |
|
$this->resource = @imagecreatefromstring($data); |
|
if ($this->fileInfo) { |
|
$this->mimeType = $this->fileInfo->buffer($data); |
|
} |
|
if (!$this->resource) { |
|
$this->logger->debug('OC_Image->loadFromBase64, could not load', array('app' => 'core')); |
|
return false; |
|
} |
|
return $this->resource; |
|
} else { |
|
return false; |
|
} |
|
} |
|
|
|
/** |
|
* Create a new image from file or URL |
|
* |
|
* @link http://www.programmierer-forum.de/function-imagecreatefrombmp-laeuft-mit-allen-bitraten-t143137.htm |
|
* @version 1.00 |
|
* @param string $fileName <p> |
|
* Path to the BMP image. |
|
* </p> |
|
* @return bool|resource an image resource identifier on success, <b>FALSE</b> on errors. |
|
*/ |
|
private function imagecreatefrombmp($fileName) { |
|
if (!($fh = fopen($fileName, 'rb'))) { |
|
$this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName, array('app' => 'core')); |
|
return false; |
|
} |
|
// read file header |
|
$meta = unpack('vtype/Vfilesize/Vreserved/Voffset', fread($fh, 14)); |
|
// check for bitmap |
|
if ($meta['type'] != 19778) { |
|
fclose($fh); |
|
$this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName . ' is not a bitmap!', array('app' => 'core')); |
|
return false; |
|
} |
|
// read image header |
|
$meta += unpack('Vheadersize/Vwidth/Vheight/vplanes/vbits/Vcompression/Vimagesize/Vxres/Vyres/Vcolors/Vimportant', fread($fh, 40)); |
|
// read additional 16bit header |
|
if ($meta['bits'] == 16) { |
|
$meta += unpack('VrMask/VgMask/VbMask', fread($fh, 12)); |
|
} |
|
// set bytes and padding |
|
$meta['bytes'] = $meta['bits'] / 8; |
|
$this->bitDepth = $meta['bits']; //remember the bit depth for the imagebmp call |
|
$meta['decal'] = 4 - (4 * (($meta['width'] * $meta['bytes'] / 4) - floor($meta['width'] * $meta['bytes'] / 4))); |
|
if ($meta['decal'] == 4) { |
|
$meta['decal'] = 0; |
|
} |
|
// obtain imagesize |
|
if ($meta['imagesize'] < 1) { |
|
$meta['imagesize'] = $meta['filesize'] - $meta['offset']; |
|
// in rare cases filesize is equal to offset so we need to read physical size |
|
if ($meta['imagesize'] < 1) { |
|
$meta['imagesize'] = @filesize($fileName) - $meta['offset']; |
|
if ($meta['imagesize'] < 1) { |
|
fclose($fh); |
|
$this->logger->warning('imagecreatefrombmp: Can not obtain file size of ' . $fileName . ' is not a bitmap!', array('app' => 'core')); |
|
return false; |
|
} |
|
} |
|
} |
|
// calculate colors |
|
$meta['colors'] = !$meta['colors'] ? pow(2, $meta['bits']) : $meta['colors']; |
|
// read color palette |
|
$palette = array(); |
|
if ($meta['bits'] < 16) { |
|
$palette = unpack('l' . $meta['colors'], fread($fh, $meta['colors'] * 4)); |
|
// in rare cases the color value is signed |
|
if ($palette[1] < 0) { |
|
foreach ($palette as $i => $color) { |
|
$palette[$i] = $color + 16777216; |
|
} |
|
} |
|
} |
|
// create gd image |
|
$im = imagecreatetruecolor($meta['width'], $meta['height']); |
|
if ($im == false) { |
|
fclose($fh); |
|
$this->logger->warning( |
|
'imagecreatefrombmp: imagecreatetruecolor failed for file "' . $fileName . '" with dimensions ' . $meta['width'] . 'x' . $meta['height'], |
|
array('app' => 'core')); |
|
return false; |
|
} |
|
|
|
$data = fread($fh, $meta['imagesize']); |
|
$p = 0; |
|
$vide = chr(0); |
|
$y = $meta['height'] - 1; |
|
$error = 'imagecreatefrombmp: ' . $fileName . ' has not enough data!'; |
|
// loop through the image data beginning with the lower left corner |
|
while ($y >= 0) { |
|
$x = 0; |
|
while ($x < $meta['width']) { |
|
switch ($meta['bits']) { |
|
case 32: |
|
case 24: |
|
if (!($part = substr($data, $p, 3))) { |
|
$this->logger->warning($error, array('app' => 'core')); |
|
return $im; |
|
} |
|
$color = @unpack('V', $part . $vide); |
|
break; |
|
case 16: |
|
if (!($part = substr($data, $p, 2))) { |
|
fclose($fh); |
|
$this->logger->warning($error, array('app' => 'core')); |
|
return $im; |
|
} |
|
$color = @unpack('v', $part); |
|
$color[1] = (($color[1] & 0xf800) >> 8) * 65536 + (($color[1] & 0x07e0) >> 3) * 256 + (($color[1] & 0x001f) << 3); |
|
break; |
|
case 8: |
|
$color = @unpack('n', $vide . ($data[$p] ?? '')); |
|
$color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1]; |
|
break; |
|
case 4: |
|
$color = @unpack('n', $vide . ($data[floor($p)] ?? '')); |
|
$color[1] = ($p * 2) % 2 == 0 ? $color[1] >> 4 : $color[1] & 0x0F; |
|
$color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1]; |
|
break; |
|
case 1: |
|
$color = @unpack('n', $vide . ($data[floor($p)] ?? '')); |
|
switch (($p * 8) % 8) { |
|
case 0: |
|
$color[1] = $color[1] >> 7; |
|
break; |
|
case 1: |
|
$color[1] = ($color[1] & 0x40) >> 6; |
|
break; |
|
case 2: |
|
$color[1] = ($color[1] & 0x20) >> 5; |
|
break; |
|
case 3: |
|
$color[1] = ($color[1] & 0x10) >> 4; |
|
break; |
|
case 4: |
|
$color[1] = ($color[1] & 0x8) >> 3; |
|
break; |
|
case 5: |
|
$color[1] = ($color[1] & 0x4) >> 2; |
|
break; |
|
case 6: |
|
$color[1] = ($color[1] & 0x2) >> 1; |
|
break; |
|
case 7: |
|
$color[1] = ($color[1] & 0x1); |
|
break; |
|
} |
|
$color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1]; |
|
break; |
|
default: |
|
fclose($fh); |
|
$this->logger->warning('imagecreatefrombmp: ' . $fileName . ' has ' . $meta['bits'] . ' bits and this is not supported!', array('app' => 'core')); |
|
return false; |
|
} |
|
imagesetpixel($im, $x, $y, $color[1]); |
|
$x++; |
|
$p += $meta['bytes']; |
|
} |
|
$y--; |
|
$p += $meta['decal']; |
|
} |
|
fclose($fh); |
|
return $im; |
|
} |
|
|
|
/** |
|
* Resizes the image preserving ratio. |
|
* |
|
* @param integer $maxSize The maximum size of either the width or height. |
|
* @return bool |
|
*/ |
|
public function resize($maxSize) { |
|
if (!$this->valid()) { |
|
$this->logger->error(__METHOD__ . '(): No image loaded', array('app' => 'core')); |
|
return false; |
|
} |
|
$widthOrig = imagesx($this->resource); |
|
$heightOrig = imagesy($this->resource); |
|
$ratioOrig = $widthOrig / $heightOrig; |
|
|
|
if ($ratioOrig > 1) { |
|
$newHeight = round($maxSize / $ratioOrig); |
|
$newWidth = $maxSize; |
|
} else { |
|
$newWidth = round($maxSize * $ratioOrig); |
|
$newHeight = $maxSize; |
|
} |
|
|
|
$this->preciseResize((int)round($newWidth), (int)round($newHeight)); |
|
return true; |
|
} |
|
|
|
/** |
|
* @param int $width |
|
* @param int $height |
|
* @return bool |
|
*/ |
|
public function preciseResize(int $width, int $height): bool { |
|
if (!$this->valid()) { |
|
$this->logger->error(__METHOD__ . '(): No image loaded', array('app' => 'core')); |
|
return false; |
|
} |
|
$widthOrig = imagesx($this->resource); |
|
$heightOrig = imagesy($this->resource); |
|
$process = imagecreatetruecolor($width, $height); |
|
if ($process === false) { |
|
$this->logger->error(__METHOD__ . '(): Error creating true color image', array('app' => 'core')); |
|
return false; |
|
} |
|
|
|
// preserve transparency |
|
if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { |
|
imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); |
|
imagealphablending($process, false); |
|
imagesavealpha($process, true); |
|
} |
|
|
|
$res = imagecopyresampled($process, $this->resource, 0, 0, 0, 0, $width, $height, $widthOrig, $heightOrig); |
|
if ($res === false) { |
|
$this->logger->error(__METHOD__ . '(): Error re-sampling process image', array('app' => 'core')); |
|
imagedestroy($process); |
|
return false; |
|
} |
|
imagedestroy($this->resource); |
|
$this->resource = $process; |
|
return true; |
|
} |
|
|
|
/** |
|
* Crops the image to the middle square. If the image is already square it just returns. |
|
* |
|
* @param int $size maximum size for the result (optional) |
|
* @return bool for success or failure |
|
*/ |
|
public function centerCrop($size = 0) { |
|
if (!$this->valid()) { |
|
$this->logger->error('OC_Image->centerCrop, No image loaded', array('app' => 'core')); |
|
return false; |
|
} |
|
$widthOrig = imagesx($this->resource); |
|
$heightOrig = imagesy($this->resource); |
|
if ($widthOrig === $heightOrig and $size == 0) { |
|
return true; |
|
} |
|
$ratioOrig = $widthOrig / $heightOrig; |
|
$width = $height = min($widthOrig, $heightOrig); |
|
|
|
if ($ratioOrig > 1) { |
|
$x = ($widthOrig / 2) - ($width / 2); |
|
$y = 0; |
|
} else { |
|
$y = ($heightOrig / 2) - ($height / 2); |
|
$x = 0; |
|
} |
|
if ($size > 0) { |
|
$targetWidth = $size; |
|
$targetHeight = $size; |
|
} else { |
|
$targetWidth = $width; |
|
$targetHeight = $height; |
|
} |
|
$process = imagecreatetruecolor($targetWidth, $targetHeight); |
|
if ($process == false) { |
|
$this->logger->error('OC_Image->centerCrop, Error creating true color image', array('app' => 'core')); |
|
imagedestroy($process); |
|
return false; |
|
} |
|
|
|
// preserve transparency |
|
if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { |
|
imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); |
|
imagealphablending($process, false); |
|
imagesavealpha($process, true); |
|
} |
|
|
|
imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $targetWidth, $targetHeight, $width, $height); |
|
if ($process == false) { |
|
$this->logger->error('OC_Image->centerCrop, Error re-sampling process image ' . $width . 'x' . $height, array('app' => 'core')); |
|
imagedestroy($process); |
|
return false; |
|
} |
|
imagedestroy($this->resource); |
|
$this->resource = $process; |
|
return true; |
|
} |
|
|
|
/** |
|
* Crops the image from point $x$y with dimension $wx$h. |
|
* |
|
* @param int $x Horizontal position |
|
* @param int $y Vertical position |
|
* @param int $w Width |
|
* @param int $h Height |
|
* @return bool for success or failure |
|
*/ |
|
public function crop(int $x, int $y, int $w, int $h): bool { |
|
if (!$this->valid()) { |
|
$this->logger->error(__METHOD__ . '(): No image loaded', array('app' => 'core')); |
|
return false; |
|
} |
|
$process = imagecreatetruecolor($w, $h); |
|
if ($process == false) { |
|
$this->logger->error(__METHOD__ . '(): Error creating true color image', array('app' => 'core')); |
|
imagedestroy($process); |
|
return false; |
|
} |
|
|
|
// preserve transparency |
|
if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) { |
|
imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127)); |
|
imagealphablending($process, false); |
|
imagesavealpha($process, true); |
|
} |
|
|
|
imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $w, $h, $w, $h); |
|
if ($process == false) { |
|
$this->logger->error(__METHOD__ . '(): Error re-sampling process image ' . $w . 'x' . $h, array('app' => 'core')); |
|
imagedestroy($process); |
|
return false; |
|
} |
|
imagedestroy($this->resource); |
|
$this->resource = $process; |
|
return true; |
|
} |
|
|
|
/** |
|
* Resizes the image to fit within a boundary while preserving ratio. |
|
* |
|
* Warning: Images smaller than $maxWidth x $maxHeight will end up being scaled up |
|
* |
|
* @param integer $maxWidth |
|
* @param integer $maxHeight |
|
* @return bool |
|
*/ |
|
public function fitIn($maxWidth, $maxHeight) { |
|
if (!$this->valid()) { |
|
$this->logger->error(__METHOD__ . '(): No image loaded', array('app' => 'core')); |
|
return false; |
|
} |
|
$widthOrig = imagesx($this->resource); |
|
$heightOrig = imagesy($this->resource); |
|
$ratio = $widthOrig / $heightOrig; |
|
|
|
$newWidth = min($maxWidth, $ratio * $maxHeight); |
|
$newHeight = min($maxHeight, $maxWidth / $ratio); |
|
|
|
$this->preciseResize((int)round($newWidth), (int)round($newHeight)); |
|
return true; |
|
} |
|
|
|
/** |
|
* Shrinks larger images to fit within specified boundaries while preserving ratio. |
|
* |
|
* @param integer $maxWidth |
|
* @param integer $maxHeight |
|
* @return bool |
|
*/ |
|
public function scaleDownToFit($maxWidth, $maxHeight) { |
|
if (!$this->valid()) { |
|
$this->logger->error(__METHOD__ . '(): No image loaded', array('app' => 'core')); |
|
return false; |
|
} |
|
$widthOrig = imagesx($this->resource); |
|
$heightOrig = imagesy($this->resource); |
|
|
|
if ($widthOrig > $maxWidth || $heightOrig > $maxHeight) { |
|
return $this->fitIn($maxWidth, $maxHeight); |
|
} |
|
|
|
return false; |
|
} |
|
|
|
/** |
|
* Destroys the current image and resets the object |
|
*/ |
|
public function destroy() { |
|
if ($this->valid()) { |
|
imagedestroy($this->resource); |
|
} |
|
$this->resource = null; |
|
} |
|
|
|
public function __destruct() { |
|
$this->destroy(); |
|
} |
|
} |
|
|
|
if (!function_exists('imagebmp')) { |
|
/** |
|
* Output a BMP image to either the browser or a file |
|
* |
|
* @link http://www.ugia.cn/wp-data/imagebmp.php |
|
* @author legend <legendsky@hotmail.com> |
|
* @link http://www.programmierer-forum.de/imagebmp-gute-funktion-gefunden-t143716.htm |
|
* @author mgutt <marc@gutt.it> |
|
* @version 1.00 |
|
* @param resource $im |
|
* @param string $fileName [optional] <p>The path to save the file to.</p> |
|
* @param int $bit [optional] <p>Bit depth, (default is 24).</p> |
|
* @param int $compression [optional] |
|
* @return bool <b>TRUE</b> on success or <b>FALSE</b> on failure. |
|
*/ |
|
function imagebmp($im, $fileName = '', $bit = 24, $compression = 0) { |
|
if (!in_array($bit, array(1, 4, 8, 16, 24, 32))) { |
|
$bit = 24; |
|
} else if ($bit == 32) { |
|
$bit = 24; |
|
} |
|
$bits = pow(2, $bit); |
|
imagetruecolortopalette($im, true, $bits); |
|
$width = imagesx($im); |
|
$height = imagesy($im); |
|
$colorsNum = imagecolorstotal($im); |
|
$rgbQuad = ''; |
|
if ($bit <= 8) { |
|
for ($i = 0; $i < $colorsNum; $i++) { |
|
$colors = imagecolorsforindex($im, $i); |
|
$rgbQuad .= chr($colors['blue']) . chr($colors['green']) . chr($colors['red']) . "\0"; |
|
} |
|
$bmpData = ''; |
|
if ($compression == 0 || $bit < 8) { |
|
$compression = 0; |
|
$extra = ''; |
|
$padding = 4 - ceil($width / (8 / $bit)) % 4; |
|
if ($padding % 4 != 0) { |
|
$extra = str_repeat("\0", $padding); |
|
} |
|
for ($j = $height - 1; $j >= 0; $j--) { |
|
$i = 0; |
|
while ($i < $width) { |
|
$bin = 0; |
|
$limit = $width - $i < 8 / $bit ? (8 / $bit - $width + $i) * $bit : 0; |
|
for ($k = 8 - $bit; $k >= $limit; $k -= $bit) { |
|
$index = imagecolorat($im, $i, $j); |
|
$bin |= $index << $k; |
|
$i++; |
|
} |
|
$bmpData .= chr($bin); |
|
} |
|
$bmpData .= $extra; |
|
} |
|
} // RLE8 |
|
else if ($compression == 1 && $bit == 8) { |
|
for ($j = $height - 1; $j >= 0; $j--) { |
|
$lastIndex = "\0"; |
|
$sameNum = 0; |
|
for ($i = 0; $i <= $width; $i++) { |
|
$index = imagecolorat($im, $i, $j); |
|
if ($index !== $lastIndex || $sameNum > 255) { |
|
if ($sameNum != 0) { |
|
$bmpData .= chr($sameNum) . chr($lastIndex); |
|
} |
|
$lastIndex = $index; |
|
$sameNum = 1; |
|
} else { |
|
$sameNum++; |
|
} |
|
} |
|
$bmpData .= "\0\0"; |
|
} |
|
$bmpData .= "\0\1"; |
|
} |
|
$sizeQuad = strlen($rgbQuad); |
|
$sizeData = strlen($bmpData); |
|
} else { |
|
$extra = ''; |
|
$padding = 4 - ($width * ($bit / 8)) % 4; |
|
if ($padding % 4 != 0) { |
|
$extra = str_repeat("\0", $padding); |
|
} |
|
$bmpData = ''; |
|
for ($j = $height - 1; $j >= 0; $j--) { |
|
for ($i = 0; $i < $width; $i++) { |
|
$index = imagecolorat($im, $i, $j); |
|
$colors = imagecolorsforindex($im, $index); |
|
if ($bit == 16) { |
|
$bin = 0 << $bit; |
|
$bin |= ($colors['red'] >> 3) << 10; |
|
$bin |= ($colors['green'] >> 3) << 5; |
|
$bin |= $colors['blue'] >> 3; |
|
$bmpData .= pack("v", $bin); |
|
} else { |
|
$bmpData .= pack("c*", $colors['blue'], $colors['green'], $colors['red']); |
|
} |
|
} |
|
$bmpData .= $extra; |
|
} |
|
$sizeQuad = 0; |
|
$sizeData = strlen($bmpData); |
|
$colorsNum = 0; |
|
} |
|
$fileHeader = 'BM' . pack('V3', 54 + $sizeQuad + $sizeData, 0, 54 + $sizeQuad); |
|
$infoHeader = pack('V3v2V*', 0x28, $width, $height, 1, $bit, $compression, $sizeData, 0, 0, $colorsNum, 0); |
|
if ($fileName != '') { |
|
$fp = fopen($fileName, 'wb'); |
|
fwrite($fp, $fileHeader . $infoHeader . $rgbQuad . $bmpData); |
|
fclose($fp); |
|
return true; |
|
} |
|
echo $fileHeader . $infoHeader . $rgbQuad . $bmpData; |
|
return true; |
|
} |
|
} |
|
|
|
if (!function_exists('exif_imagetype')) { |
|
/** |
|
* Workaround if exif_imagetype does not exist |
|
* |
|
* @link http://www.php.net/manual/en/function.exif-imagetype.php#80383 |
|
* @param string $fileName |
|
* @return string|boolean |
|
*/ |
|
function exif_imagetype($fileName) { |
|
if (($info = getimagesize($fileName)) !== false) { |
|
return $info[2]; |
|
} |
|
return false; |
|
} |
|
}
|
|
|