Support writing LONG8 offsets

python-pillow · Sep 25, 2024 · 24e9961 · 24e9961
1 parent 0a99d63
commit 24e9961
Show file tree

Hide file tree

Showing 2 changed files with 1 addition and 5 deletions.
diff --git a/Tests/test_file_tiff.py b/Tests/test_file_tiff.py
@@ -108,10 +108,6 @@ def test_bigtiff(self, tmp_path: Path) -> None:
             assert_image_equal_tofile(im, "Tests/images/hopper.tif")
 
         with Image.open("Tests/images/hopper_bigtiff.tif") as im:
-            # The data type of this file's StripOffsets tag is LONG8,
-            # which is not yet supported for offset data when saving multiple frames.
-            del im.tag_v2[273]
-
             outfile = str(tmp_path / "temp.tif")
             im.save(outfile, save_all=True, append_images=[im], tiffinfo=im.tag_v2)
 

diff --git a/src/PIL/TiffImagePlugin.py b/src/PIL/TiffImagePlugin.py
@@ -2123,7 +2123,7 @@ def write(self, data: Buffer, /) -> int:
 
     def _fmt(self, field_size: int) -> str:
         try:
-            return {2: "H", 4: "L"}[field_size]
+            return {2: "H", 4: "L", 8: "Q"}[field_size]
         except KeyError:
             msg = "offset is not supported"
             raise RuntimeError(msg)