Adds support for the AVIF format

src/Intervention/Image/AbstractEncoder.php

@@ -84,6 +84,13 @@ abstract class AbstractEncoder
      */
     abstract protected function processWebp();
 
+    /**
+     * Processes and returns image as Avif encoded string
+     *
+     * @return string
+     */
+    abstract protected function processAvif();
+
     /**
      * Process a given image
      *
@@ -169,6 +176,11 @@ abstract class AbstractEncoder
                 $this->result = $this->processWebp();
                 break;
 
+            case 'avif':
+            case 'image/avif':
+                $this->result = $this->processAvif();
+                break;
+                
             default:
                 throw new NotSupportedException(
                     "Encoding format ({$format}) is not supported."

src/Intervention/Image/Gd/Encoder.php

@@ -121,4 +121,16 @@ class Encoder extends \Intervention\Image\AbstractEncoder
             "PSD format is not supported by Gd Driver."
         );
     }
+
+    /**
+     * Processes and returns encoded image as AVIF string
+     *
+     * @return string
+     */
+    protected function processAvif()
+    {
+        throw new NotSupportedException(
+            "AVIF format is not supported by Gd Driver."
+        );
+    }
 }

src/Intervention/Image/Imagick/Encoder.php

@@ -170,4 +170,26 @@ class Encoder extends AbstractEncoder
 
         return $imagick->getImagesBlob();
     }
+
+    protected function processAvif()
+    {
+        if ( ! \Imagick::queryFormats('AVIF')) {
+            throw new NotSupportedException(
+                "AVIF format is not supported by Imagick installation."
+            );
+        }
+
+        $format = 'avif';
+        $compression = \Imagick::COMPRESSION_UNDEFINED;
+
+        $imagick = $this->image->getCore();
+        $imagick->setFormat($format);
+        $imagick->setImageFormat($format);
+        $imagick->setCompression($compression);
+        $imagick->setImageCompression($compression);
+        $imagick->setCompressionQuality($this->quality);
+        $imagick->setImageCompressionQuality($this->quality);
+
+        return $imagick->getImagesBlob();
+    }
 }