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Basic implementation of backup media store

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This commit is contained in:
Erik Johnston 2017-10-12 15:20:59 +01:00
parent f807f7f804
commit bf4fb1fb40
4 changed files with 130 additions and 125 deletions
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16
synapse/rest/media/v1/thumbnailer.py
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@ -50,12 +50,12 @@ class Thumbnailer(object):
else:
return ((max_height * self.width) // self.height, max_height)
def scale(self, output_path, width, height, output_type):
def scale(self, width, height, output_type):
"""Rescales the image to the given dimensions"""
scaled = self.image.resize((width, height), Image.ANTIALIAS)
return self.save_image(scaled, output_type, output_path)
return self._encode_image(scaled, output_type)
def crop(self, output_path, width, height, output_type):
def crop(self, width, height, output_type):
"""Rescales and crops the image to the given dimensions preserving
aspect::
(w_in / h_in) = (w_scaled / h_scaled)
@ -82,13 +82,9 @@ class Thumbnailer(object):
crop_left = (scaled_width - width) // 2
crop_right = width + crop_left
cropped = scaled_image.crop((crop_left, 0, crop_right, height))
return self.save_image(cropped, output_type, output_path)
return self._encode_image(cropped, output_type)
def save_image(self, output_image, output_type, output_path):
def _encode_image(self, output_image, output_type):
output_bytes_io = BytesIO()
output_image.save(output_bytes_io, self.FORMATS[output_type], quality=80)
output_bytes = output_bytes_io.getvalue()
with open(output_path, "wb") as output_file:
output_file.write(output_bytes)
logger.info("Stored thumbnail in file %r", output_path)
return len(output_bytes)
return output_bytes_io