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Fix saving of non-RGB thumbnails as PNG (#17736)

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Martin Weinelt 2024-10-08 19:32:25 +02:00 committed by GitHub
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commit 60aebdb27e
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2 changed files with 2 additions and 1 deletions
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changelog.d/17736.bugfix Normal file
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@ -0,0 +1 @@
Fix saving of PNG thumbnails, when the original image is in the CMYK color space.

2
synapse/media/thumbnailer.py
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@ -206,7 +206,7 @@ class Thumbnailer:
def _encode_image(self, output_image: Image.Image, output_type: str) -> BytesIO:
output_bytes_io = BytesIO()
fmt = self.FORMATS[output_type]
if fmt == "JPEG":
if fmt == "JPEG" or fmt == "PNG" and output_image.mode == "CMYK":
output_image = output_image.convert("RGB")
output_image.save(output_bytes_io, fmt, quality=80)
return output_bytes_io