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Merge pull request #5343 from radarhere/tiff_adobe_deflate

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Replaced tiff_deflate with tiff_adobe_deflate compression when saving TIFF images
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Hugo van Kemenade 2021-03-19 08:46:39 +02:00 committed by GitHub
commit 0d7e205aa7
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2 changed files with 10 additions and 0 deletions
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8
Tests/test_file_libtiff.py
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@ -471,6 +471,14 @@ class TestFileLibTiff(LibTiffTestCase):
with Image.open(out) as reloaded:
assert reloaded.info["compression"] == "jpeg"
def test_tiff_deflate_compression(self, tmp_path):
im = hopper("RGB")
out = str(tmp_path / "temp.tif")
im.save(out, compression="tiff_deflate")
with Image.open(out) as reloaded:
assert reloaded.info["compression"] == "tiff_adobe_deflate"
def test_quality(self, tmp_path):
im = hopper("RGB")
out = str(tmp_path / "temp.tif")

2
src/PIL/TiffImagePlugin.py
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@ -1442,6 +1442,8 @@ def _save(im, fp, filename):
elif compression == "tiff_jpeg":
# OJPEG is obsolete, so use new-style JPEG compression instead
compression = "jpeg"
elif compression == "tiff_deflate":
compression = "tiff_adobe_deflate"
libtiff = WRITE_LIBTIFF or compression != "raw"