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Merge pull request #4627 from radarhere/tiff_jpeg

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Replaced tiff_jpeg with jpeg compression when saving TIFF images
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Hugo van Kemenade 2020-06-20 15:49:09 +03:00 committed by GitHub
commit 2d9dcc7657
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2 changed files with 11 additions and 0 deletions
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8
Tests/test_file_libtiff.py
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@ -456,6 +456,14 @@ class TestFileLibTiff(LibTiffTestCase):
assert size_compressed > size_jpeg
assert size_jpeg > size_jpeg_30
def test_tiff_jpeg_compression(self, tmp_path):
im = hopper("RGB")
out = str(tmp_path / "temp.tif")
im.save(out, compression="tiff_jpeg")
with Image.open(out) as reloaded:
assert reloaded.info["compression"] == "jpeg"
def test_quality(self, tmp_path):
im = hopper("RGB")
out = str(tmp_path / "temp.tif")

3
src/PIL/TiffImagePlugin.py
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@ -1408,6 +1408,9 @@ def _save(im, fp, filename):
compression = im.encoderinfo.get("compression", im.info.get("compression"))
if compression is None:
compression = "raw"
elif compression == "tiff_jpeg":
# OJPEG is obsolete, so use new-style JPEG compression instead
compression = "jpeg"
libtiff = WRITE_LIBTIFF or compression != "raw"