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Support writing IFD tag types

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This commit is contained in:
Andrew Murray 2025-10-23 20:03:14 +11:00
parent b04d8792f5
commit ddd4f00720
2 changed files with 15 additions and 1 deletions
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14
Tests/test_file_libtiff.py
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@ -355,6 +355,20 @@ class TestFileLibTiff(LibTiffTestCase):
# Should not segfault # Should not segfault
im.save(outfile) im.save(outfile)
def test_ifd(self, monkeypatch: pytest.MonkeyPatch, tmp_path: Path) -> None:
monkeypatch.setattr(TiffImagePlugin, "WRITE_LIBTIFF", True)
ifd = TiffImagePlugin.ImageFileDirectory_v2()
ifd[37000] = 100
ifd.tagtype[37000] = TiffTags.IFD
out = tmp_path / "temp.tif"
im = Image.new("L", (1, 1))
im.save(out, tiffinfo=ifd)
with Image.open(out) as reloaded:
assert reloaded.tag_v2[37000] == 100
def test_inknames_tag( def test_inknames_tag(
self, monkeypatch: pytest.MonkeyPatch, tmp_path: Path self, monkeypatch: pytest.MonkeyPatch, tmp_path: Path
) -> None: ) -> None:

2
src/encode.c
View File

@ -974,7 +974,7 @@ PyImaging_LibTiffEncoderNew(PyObject *self, PyObject *args) {
status = ImagingLibTiffSetField( status = ImagingLibTiffSetField(
&encoder->state, (ttag_t)key_int, (UINT16)PyLong_AsLong(value) &encoder->state, (ttag_t)key_int, (UINT16)PyLong_AsLong(value)
); );
} else if (type == TIFF_LONG) { } else if (type == TIFF_LONG || type == TIFF_IFD) {
status = ImagingLibTiffSetField( status = ImagingLibTiffSetField(
&encoder->state, (ttag_t)key_int, (UINT32)PyLong_AsLong(value) &encoder->state, (ttag_t)key_int, (UINT32)PyLong_AsLong(value)
); );