Added 2nd optional parameter to Image::convertToAlternative to prov…

…ide your own options for loading the image as tiff.

CHANGELOG.md

@@ -1,5 +1,9 @@
 # CHANGELOG
 
+### 0.1.0 (2017-12-06)
+
+  * Added 2nd optional parameter to `Image::convertToAlternative` to provide your own options for loading the image as tiff. 
+
 ### 0.0.5 (2017-12-03)
 
   * ext/vips 1.0.8 is required. Throw exceptions in methods, which needs vips 8.6.

lib/Imagine/Vips/Image.php

@@ -702,11 +702,12 @@ public static function getColorArrayAlpha(ColorInterface $color, $bands = 4): ar
     }
 
     /**
-     * @param ImagineInterface|null $imagine the alternative imagine interface to use, autodetects, if not set
+     * @param ImagineInterface|null $imagine     the alternative imagine interface to use, autodetects, if not set
+     * @param array|null            $tiffOptions options to load the tiff image for conversion, eg ['strip' => true]
      *
      * @return ImageInterface
      */
-    public function convertToAlternative(ImagineInterface $imagine = null)
+    public function convertToAlternative(ImagineInterface $imagine = null, array $tiffOptions = [])
     {
         if (null === $imagine) {
             if (class_exists('Imagick')) {
@@ -716,7 +717,7 @@ public function convertToAlternative(ImagineInterface $imagine = null)
             }
         }
 
-        return $imagine->load($this->getImageStringForLoad($this->vips));
+        return $imagine->load($this->getImageStringForLoad($this->vips, $tiffOptions));
     }
 
     protected function applyProfile(ProfileInterface $profile, VipsImage $vips)
@@ -784,13 +785,16 @@ protected function getDefaultProfileForInterpretation($vips)
     }
 
     /**
-     * @param VipsImage $res
+     * @param VipsImage  $res
+     * @param array|null $tiffOptions options to load the tiff image for conversion, eg ['strip' => true]
      *
      * @return string
      */
-    protected function getImageStringForLoad(VipsImage $res)
+    protected function getImageStringForLoad(VipsImage $res, $tiffOptions = [])
     {
-        return $res->tiffsave_buffer(['compression' => ForeignTiffCompression::NONE]);
+        $options = array_merge(['compression' => ForeignTiffCompression::NONE], $tiffOptions);
+
+        return $res->tiffsave_buffer($options);
     }
 
     /**