Added getxmp() to WebPImagePlugin

[radarhere]

Resolves #6757

[bigcat88]

Are you sure that this will return dictionary and not a bytes when xmp is present?

Just do not see any call to _getxmp

[bigcat88]

Meant return like this:

Pillow/src/PIL/PngImagePlugin.py

Line 1021 in f276316

def getxmp(self):

Pillow/src/PIL/JpegImagePlugin.py

Line 482 in f276316

def getxmp(self):

Pillow/src/PIL/TiffImagePlugin.py

Line 1196 in f276316

return self._getxmp(self.tag_v2[XMP]) if XMP in self.tag_v2 else {}

[radarhere]

Yep, you're right. I've updated the commit.

[hugovk]

Let's document this in the release notes and at https://pillow--6758.org.readthedocs.build/en/6758/reference/plugins.html#PIL.WebPImagePlugin.WebPImageFile.getxmp

[radarhere]

Ok, https://pillow--6758.org.readthedocs.build/en/6758/reference/plugins.html#PIL.WebPImagePlugin.WebPImageFile.getxmp and https://pillow--6758.org.readthedocs.build/en/6758/releasenotes/9.4.0.html#getxmp now document the new addition.

[hugovk]

Thanks!