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<?php |
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namespace WebPConvert\Convert\Converters; |
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use WebPConvert\Convert\Converters\AbstractConverter; |
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use WebPConvert\Convert\Exceptions\ConversionFailedException; |
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use WebPConvert\Convert\Exceptions\ConversionFailed\ConverterNotOperational\SystemRequirementsNotMetException; |
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//use WebPConvert\Convert\Exceptions\ConversionFailed\InvalidInput\TargetNotFoundException; |
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/** |
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* Convert images to webp using Gmagick extension. |
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* |
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* @package WebPConvert |
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* @author Bjørn Rosell <[email protected]> |
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* @since Class available since Release 2.0.0 |
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*/ |
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class Gmagick extends AbstractConverter |
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{ |
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public function supportsLossless() |
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{ |
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return false; |
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} |
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/** |
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* Check (general) operationality of Gmagick converter. |
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* |
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* Note: |
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* It may be that Gd has been compiled without jpeg support or png support. |
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* We do not check for this here, as the converter could still be used for the other. |
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* |
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* @throws SystemRequirementsNotMetException if system requirements are not met |
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*/ |
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public function checkOperationality() |
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{ |
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if (!extension_loaded('Gmagick')) { |
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throw new SystemRequirementsNotMetException('Required Gmagick extension is not available.'); |
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} |
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if (!class_exists('Gmagick')) { |
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throw new SystemRequirementsNotMetException( |
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'Gmagick is installed, but not correctly. The class Gmagick is not available' |
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); |
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} |
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$im = new \Gmagick($this->source); |
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if (!in_array('WEBP', $im->queryformats())) { |
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throw new SystemRequirementsNotMetException('Gmagick was compiled without WebP support.'); |
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} |
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} |
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/** |
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* Check if specific file is convertable with current converter / converter settings. |
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* |
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* @throws SystemRequirementsNotMetException if Gmagick does not support image type |
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*/ |
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public function checkConvertability() |
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{ |
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$im = new \Gmagick(); |
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$mimeType = $this->getMimeTypeOfSource(); |
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switch ($mimeType) { |
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case 'image/png': |
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if (!in_array('PNG', $im->queryFormats())) { |
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throw new SystemRequirementsNotMetException( |
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'Imagick has been compiled without PNG support and can therefore not convert this PNG image.' |
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); |
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} |
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break; |
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case 'image/jpeg': |
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if (!in_array('JPEG', $im->queryFormats())) { |
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throw new SystemRequirementsNotMetException( |
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'Imagick has been compiled without Jpeg support and can therefore not convert this Jpeg image.' |
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); |
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} |
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break; |
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} |
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} |
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// Although this method is public, do not call directly. |
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// You should rather call the static convert() function, defined in AbstractConverter, which |
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// takes care of preparing stuff before calling doConvert, and validating after. |
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protected function doActualConvert() |
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{ |
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$options = $this->options; |
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try { |
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$im = new \Gmagick($this->source); |
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} catch (\Exception $e) { |
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throw new ConversionFailedException( |
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'Failed creating Gmagick object of file', |
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'Failed creating Gmagick object of file: "' . $this->source . '" - Gmagick threw an exception.', |
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$e |
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); |
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} |
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/* |
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Seems there are currently no way to set webp options |
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As noted in the following link, it should probably be done with a $im->addDefinition() method |
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- but that isn't exposed (yet) |
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(TODO: see if anyone has answered...) |
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https://stackoverflow.com/questions/47294962/how-to-write-lossless-webp-files-with-perlmagick |
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*/ |
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// The following two does not have any effect... How to set WebP options? |
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//$im->setimageoption('webp', 'webp:lossless', $options['lossless'] ? 'true' : 'false'); |
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//$im->setimageoption('WEBP', 'method', strval($options['method'])); |
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// It seems there is no COMPRESSION_WEBP... |
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// http://php.net/manual/en/imagick.setimagecompression.php |
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//$im->setImageCompression(Imagick::COMPRESSION_JPEG); |
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//$im->setImageCompression(Imagick::COMPRESSION_UNDEFINED); |
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$im->setimageformat('WEBP'); |
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if ($options['metadata'] == 'none') { |
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// Strip metadata and profiles |
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$im->stripImage(); |
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} |
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// Ps: Imagick automatically uses same quality as source, when no quality is set |
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// This feature is however not present in Gmagick |
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// TODO: However, it might be possible after all - see #91 |
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$im->setcompressionquality($this->getCalculatedQuality()); |
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try { |
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// We call getImageBlob(). |
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// That method is undocumented, but it is there! |
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// - just like it is in imagick, as pointed out here: |
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// https://www.php.net/manual/ru/gmagick.readimageblob.php |
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/** @scrutinizer ignore-call */ |
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$imageBlob = $im->getImageBlob(); |
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} catch (\ImagickException $e) { |
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throw new ConversionFailedException( |
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'Gmagick failed converting - getImageBlob() threw an exception)', |
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0, |
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$e |
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); |
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} |
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//$success = $im->writeimagefile(fopen($destination, 'wb')); |
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$success = @file_put_contents($this->destination, $imageBlob); |
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if (!$success) { |
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throw new ConversionFailedException('Failed writing file'); |
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} else { |
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//$logger->logLn('sooms we made it!'); |
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} |
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} |
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} |
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rosell-dk /
webp-convert
