Output profile support

Author: robgridley

src/Ghostscript.php

@@ -69,6 +69,13 @@ class Ghostscript
      */
     protected $fitPage;
 
+    /**
+     * The output ICC profile.
+     *
+     * @var LocalFile|null
+     */
+    protected $outputProfile = null;
+
     /**
      * Create a new Ghostscript instance.
      *
@@ -170,6 +177,17 @@ public function setFitPage(int $width, int $height)
         $this->fitPage = compact('width', 'height');
     }
 
+    /**
+     * Set the output ICC profile.
+     *
+     * @param LocalFile $profile
+     * @return void
+     */
+    public function setOutputProfile(LocalFile $profile)
+    {
+        $this->outputProfile = $profile;
+    }
+
     /**
      * Convert the specified PDF to an image.
      *
@@ -202,6 +220,10 @@ public function convert(LocalFile $file, int $page = 1, LocalFile $outputFile =
             $command[] = '-dUse' . $this->pageBox;
         }
 
+        if (!is_null($this->outputProfile)) {
+            $command[] = "-sOutputICCProfile={$this->outputProfile->getLocalPath()}";
+        }
+
         $command[] = '-dNOPLATFONTS';
         $command[] = '-dBATCH';
         $command[] = '-dNOPAUSE';