From 1e4afd57cfbade1a678d750824aa89fa7ea48c91 Mon Sep 17 00:00:00 2001
From: Oliver Vogel <oliver@olivervogel.com>
Date: Wed, 10 Jan 2024 15:08:16 +0100
Subject: [PATCH] Fix decoding error with Imagick driver

See: https://github.com/Intervention/image/issues/1261
---
 src/Drivers/Imagick/Decoders/BinaryImageDecoder.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Drivers/Imagick/Decoders/BinaryImageDecoder.php b/src/Drivers/Imagick/Decoders/BinaryImageDecoder.php
index e5db14187..ac001ef7c 100644
--- a/src/Drivers/Imagick/Decoders/BinaryImageDecoder.php
+++ b/src/Drivers/Imagick/Decoders/BinaryImageDecoder.php
@@ -29,7 +29,12 @@ public function decode(mixed $input): ImageInterface|ColorInterface
             throw new DecoderException('Unable to decode input');
         }
 
-        $imagick = $imagick->coalesceImages();
+        // For some JPEG formats, the "coalesceImages()" call leads to an image
+        // completely filled with background color. The logic behind this is
+        // incomprehensible; could be an imagemagick bug.
+        if ($imagick->getImageFormat() != 'JPEG') {
+            $imagick = $imagick->coalesceImages();
+        }
 
         // fix image orientation
         switch ($imagick->getImageOrientation()) {