Fix building TIFF loader on big endian

[skip changelog]

Signed-off-by: Nils Philippsen <nils@tiptoe.de>

0001-plug-ins-Fix-building-TIFF-loader-on-big-endian.patch

@@ -0,0 +1,45 @@
+From d101dc6b0a1acceb0286b8232a58ff7b6448502b Mon Sep 17 00:00:00 2001
+From: Nils Philippsen <nils@tiptoe.de>
+Date: Thu, 15 Aug 2024 09:50:48 +0200
+Subject: [PATCH] plug-ins: Fix building TIFF loader on big endian
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+A recent addition to load layers in Sketchbook TIFFs contained a typo in
+code specific to big endian machines, making it fail to build there,
+which wasn’t caught in CI.
+
+In addition to this fix, use the appropriately named macro to convert
+from little endian to big endian.
+
+Signed-off-by: Nils Philippsen <nils@tiptoe.de>
+---
+ plug-ins/file-tiff/file-tiff-load.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/plug-ins/file-tiff/file-tiff-load.c b/plug-ins/file-tiff/file-tiff-load.c
+index 62988e793c..5988d2a77b 100644
+--- a/plug-ins/file-tiff/file-tiff-load.c
++++ b/plug-ins/file-tiff/file-tiff-load.c
+@@ -1911,7 +1911,7 @@ load_rgba (TIFF        *tif,
+       guint32 i;
+ 
+       for (i = row_start; i < row_end; i++)
+-        buffer[i] = GUINT32_TO_LE (buffer[i]);
++        buffer[i] = GUINT32_FROM_LE (buffer[i]);
+ #endif
+ 
+       gegl_buffer_set (channel[0].buffer,
+@@ -2451,7 +2451,7 @@ load_sketchbook_layers (TIFF      *tif,
+ 
+                   /* Make sure our channels are in the right order */
+                   for (i = row_start; i < row_end; i++)
+-                    pixels[i] = GUINT32_TO_LE (pixel[i]);
++                    pixels[i] = GUINT32_FROM_LE (pixels[i]);
+ #endif
+                   gegl_buffer_set (buffer,
+                                    GEGL_RECTANGLE (0, layer_height - row - 1,
+-- 
+2.46.0
+

gimp.spec

@@ -224,9 +224,15 @@ Patch2:         gimp-2.99.19-no-phone-home-default.patch
 # use external help browser directly if help browser plug-in is not built
 Patch3:         gimp-2.99.19-external-help-browser.patch
 
-# Don’t require an unreleased gegl version:
+# Don’t require an unreleased gegl version
 Patch4:         0001-Don-t-require-unreleased-gegl-version.patch
 
+# Submitted upstream:
+
+# Fix building TIFF loader plug-in on big endian
+# https://gitlab.gnome.org/GNOME/gimp/-/merge_requests/1778
+Patch5:         0001-plug-ins-Fix-building-TIFF-loader-on-big-endian.patch
+
 %description
 GIMP (GNU Image Manipulation Program) is a powerful image composition and
 editing program, which can be extremely useful for creating logos and other
@@ -288,6 +294,7 @@ EOF
 %patch 2 -p1 -b .no-phone-home-default
 %patch 3 -p1 -b .external-help-browser
 %patch 4 -p1 -b .don-t-require-unreleased-gegl-version
+%patch 5 -p1 -b .fix-building-tiff-loader-on-big-endian
 
 %build
 # Use hardening compiler/linker flags because gimp is likely to deal with files