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do not degrade JPEG files.

This commit is contained in:
Anubhav Patel 2019-03-15 18:09:47 +05:30
parent d346b8cb0f
commit 25e616fa04
1 changed files with 5 additions and 2 deletions
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7
scrapy/pipelines/images.py
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@ -127,7 +127,7 @@ class ImagesPipeline(FilesPipeline):
raise ImageException("Image too small (%dx%d < %dx%d)" %
(width, height, self.min_width, self.min_height))
image, buf = self.convert_image(orig_image)
image, buf = self.convert_image(orig_image, BytesIO(response.body))
yield path, image, buf
for thumb_id, size in six.iteritems(self.thumbs):
@ -135,7 +135,7 @@ class ImagesPipeline(FilesPipeline):
thumb_image, thumb_buf = self.convert_image(image, size)
yield thumb_path, thumb_image, thumb_buf
def convert_image(self, image, size=None):
def convert_image(self, image, response_body, size=None):
if image.format == 'PNG' and image.mode == 'RGBA':
background = Image.new('RGBA', image.size, (255, 255, 255))
background.paste(image, image)
@ -152,6 +152,9 @@ class ImagesPipeline(FilesPipeline):
image = image.copy()
image.thumbnail(size, Image.ANTIALIAS)
if not size and image.format == 'JPEG':
return image, response_body
buf = BytesIO()
image.save(buf, 'JPEG')
return image, buf