#85 - Added webp conversion

Author: stackpr

src/Configuration/ConfigurationDefaults.php

@@ -36,8 +36,8 @@ public function __construct(&$settings) {
       $lsb = trim(`which lsb_release`);
       if ($lsb !== '') {
         $lsb = escapeshellarg($lsb);
-        $settings['operating_system'] = trim(`$lsb -is`);
-        $settings['operating_system_version'] = trim(`$lsb -rs`);
+        $settings['operating_system'] = trim(`$lsb  -is`);
+        $settings['operating_system_version'] = trim(`$lsb  -rs`);
       }
     }
     elseif ($settings['operating_system'] === 'Windows NT') {
@@ -111,6 +111,11 @@ public function __construct(&$settings) {
           '#engine' => 'Convert\\Pandoc',
         ),
       ),
+      '(jpg|png|gif|svg|tiff|wmf)->(jpg|png|gif|svg|tiff|wmf)' => array(
+        'imagemagick:default' => array(
+          '#engine' => 'Convert\\ImageMagick',
+        ),
+      ),
       'pdf->jpg' => array(
         'imagemagick:default' => array(
           '#engine' => 'Convert\\ImageMagick',
@@ -145,6 +150,28 @@ public function __construct(&$settings) {
           'chain' => 'rtf->ps->pdf',
         ),
       ),
+      'webp->jpg' => array(
+        'webp->png->jpg' => array(
+          '#engine' => 'Chain',
+          'chain' => 'webp->png->jpg',
+        ),
+      ),
+      'webp->png' => array(
+        'webp:default' => array(
+          '#engine' => 'Convert\\WebP',
+        ),
+      ),
+      'jpg->webp' => array(
+        'jpg->png->webp' => array(
+          '#engine' => 'Chain',
+          'chain' => 'jpg->png->webp',
+        ),
+      ),
+      'png->webp' => array(
+        'webp:default' => array(
+          '#engine' => 'Convert\\WebP',
+        ),
+      ),
       'rtf->ps' => array(
         'ted:default' => array(
           '#engine' => 'Convert\\Ted',

src/Engine/Convert/WebP.php

@@ -0,0 +1,62 @@
+<?php
+/*
+ * This file is part of the FileConverter package.
+ *
+ * (c) Greg Payne
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace FileConverter\Engine\Convert;
+use FileConverter\Engine\EngineBase;
+use FileConverter\Util\Shell;
+class WebP extends EngineBase {
+  public function getConvertFileShell($source, &$destination) {
+    if ($this->conversion[1] === 'webp') {
+      $this->cmd = $this->shellWhich('cwebp');
+      return array(
+        $this->cmd,
+        //         '-lossless',
+        $source,
+        '-o',
+        $destination,
+      );
+    }
+    else {
+      return array(
+        $this->cmd,
+        $source,
+        '-o',
+        $destination,
+      );
+    }
+  }
+
+  protected function getHelpInstallation($os, $os_version) {
+    $help = array(
+      'title' => 'WebP',
+      'url' => 'https://developers.google.com/speed/webp/docs/using',
+    );
+    switch ($os) {
+      case 'Ubuntu':
+        $help['os'] = 'confirmed on Ubuntu 16.04';
+        $help['apt-get'] = 'webp';
+        return $help;
+    }
+
+    return parent::getHelpInstallation($os, $os_version);
+  }
+
+  public function getVersionInfo() {
+    $info = array(
+      'dwebp' => $this->shell('dwebp -version'),
+    );
+    return $info;
+  }
+
+  public function isAvailable() {
+    $this->cmd = $this->shellWhich('dwebp');
+    return isset($this->cmd);
+  }
+}