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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\Converters\ConverterTraits\ExecTrait; |
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use WebPConvert\Convert\Converters\ConverterTraits\EncodingAutoTrait; |
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use WebPConvert\Convert\Exceptions\ConversionFailed\ConverterNotOperational\SystemRequirementsNotMetException; |
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use WebPConvert\Convert\Exceptions\ConversionFailedException; |
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//use WebPConvert\Convert\Exceptions\ConversionFailed\InvalidInput\TargetNotFoundException; |
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/** |
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* Convert images to webp by calling imagemagick binary. |
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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 FFMpeg extends AbstractConverter |
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{ |
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use ExecTrait; |
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use EncodingAutoTrait; |
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protected function getUnsupportedDefaultOptions() |
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{ |
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return [ |
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'alpha-quality', |
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'auto-filter', |
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'encoding', |
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'low-memory', |
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'near-lossless', |
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'preset', |
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'size-in-percentage', |
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'use-nice' |
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]; |
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} |
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private function getPath() |
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{ |
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if (defined('WEBPCONVERT_FFMPEG_PATH')) { |
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return constant('WEBPCONVERT_FFMPEG_PATH'); |
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} |
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if (!empty(getenv('WEBPCONVERT_FFMPEG_PATH'))) { |
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return getenv('WEBPCONVERT_FFMPEG_PATH'); |
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} |
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return 'ffmpeg'; |
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} |
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public function isInstalled() |
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{ |
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exec($this->getPath() . ' -version 2>&1', $output, $returnCode); |
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return ($returnCode == 0); |
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} |
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// Check if webp delegate is installed |
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public function isWebPDelegateInstalled() |
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{ |
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exec($this->getPath() . ' -version 2>&1', $output, $returnCode); |
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foreach ($output as $line) { |
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if (preg_match('# --enable-libwebp#i', $line)) { |
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return true; |
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} |
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} |
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return false; |
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} |
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/** |
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* Check (general) operationality of imagack converter executable |
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* |
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* @throws SystemRequirementsNotMetException if system requirements are not met |
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*/ |
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public function checkOperationality() |
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{ |
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$this->checkOperationalityExecTrait(); |
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if (!$this->isInstalled()) { |
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throw new SystemRequirementsNotMetException( |
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'ffmpeg is not installed (cannot execute: "' . $this->getPath() . '")' |
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); |
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} |
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if (!$this->isWebPDelegateInstalled()) { |
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throw new SystemRequirementsNotMetException('ffmpeg was compiled without libwebp'); |
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} |
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} |
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/** |
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* Build command line options |
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* |
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* @return string |
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*/ |
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private function createCommandLineOptions() |
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{ |
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// PS: Available webp options for ffmpeg are documented here: |
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// https://www.ffmpeg.org/ffmpeg-codecs.html#libwebp |
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$commandArguments = []; |
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$commandArguments[] = '-i'; |
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$commandArguments[] = escapeshellarg($this->source); |
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// preset. Appears first in the list as recommended in the cwebp docs |
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if (!is_null($this->options['preset'])) { |
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if ($this->options['preset'] != 'none') { |
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$cmdOptions[] = '-preset ' . $this->options['preset']; |
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} |
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} |
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// Overwrite existing files?, yes! |
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$commandArguments[] = '-y'; |
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if ($this->isQualityDetectionRequiredButFailing()) { |
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// quality:auto was specified, but could not be determined. |
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// we cannot apply the max-quality logic, but we can provide auto quality |
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// simply by not specifying the quality option. |
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} else { |
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$commandArguments[] = '-qscale ' . escapeshellarg($this->getCalculatedQuality()); |
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} |
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if ($this->options['encoding'] == 'lossless') { |
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$commandArguments[] = '-lossless 1'; |
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} else { |
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$commandArguments[] = '-lossless 0'; |
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} |
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if ($this->options['metadata'] == 'none') { |
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// Unfortunately there seems to be no easy solution available for removing all metadata. |
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} |
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// compression_level maps to method, according to https://www.ffmpeg.org/ffmpeg-codecs.html#libwebp |
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$commandArguments[] = '-compression_level ' . $this->options['method']; |
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$commandArguments[] = escapeshellarg($this->destination); |
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return implode(' ', $commandArguments); |
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} |
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protected function doActualConvert() |
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{ |
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//$this->logLn($this->getVersion()); |
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$command = $this->getPath() . ' ' . $this->createCommandLineOptions() . ' 2>&1'; |
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$useNice = (($this->options['use-nice']) && self::hasNiceSupport()) ? true : false; |
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if ($useNice) { |
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$this->logLn('using nice'); |
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$command = 'nice ' . $command; |
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} |
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$this->logLn('Executing command: ' . $command); |
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exec($command, $output, $returnCode); |
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$this->logExecOutput($output); |
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if ($returnCode == 0) { |
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$this->logLn('success'); |
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} else { |
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$this->logLn('return code: ' . $returnCode); |
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} |
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if ($returnCode == 127) { |
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throw new SystemRequirementsNotMetException('ffmpeg is not installed'); |
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} |
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if ($returnCode != 0) { |
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throw new SystemRequirementsNotMetException('The exec call failed'); |
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} |
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} |
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} |
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rosell-dk /
webp-convert
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