diff --git a/synapse/rest/media/v1/_base.py b/synapse/rest/media/v1/_base.py
index 5fefee4dde..65bbf00073 100644
--- a/synapse/rest/media/v1/_base.py
+++ b/synapse/rest/media/v1/_base.py
@@ -195,7 +195,7 @@ def respond_with_responder(request, responder, media_type, file_size, upload_nam
respond_404(request)
return
- logger.debug("Responding to media request with responder %s")
+ logger.debug("Responding to media request with responder %s", responder)
add_file_headers(request, media_type, file_size, upload_name)
try:
with responder:
diff --git a/synapse/rest/media/v1/thumbnailer.py b/synapse/rest/media/v1/thumbnailer.py
index c995d7e043..8cf415e29d 100644
--- a/synapse/rest/media/v1/thumbnailer.py
+++ b/synapse/rest/media/v1/thumbnailer.py
@@ -82,13 +82,21 @@ class Thumbnailer(object):
else:
return (max_height * self.width) // self.height, max_height
+ def _resize(self, width, height):
+ # 1-bit or 8-bit color palette images need converting to RGB
+ # otherwise they will be scaled using nearest neighbour which
+ # looks awful
+ if self.image.mode in ["1", "P"]:
+ self.image = self.image.convert("RGB")
+ return self.image.resize((width, height), Image.ANTIALIAS)
+
def scale(self, width, height, output_type):
"""Rescales the image to the given dimensions.
Returns:
BytesIO: the bytes of the encoded image ready to be written to disk
"""
- scaled = self.image.resize((width, height), Image.ANTIALIAS)
+ scaled = self._resize(width, height)
return self._encode_image(scaled, output_type)
def crop(self, width, height, output_type):
@@ -107,13 +115,13 @@ class Thumbnailer(object):
"""
if width * self.height > height * self.width:
scaled_height = (width * self.height) // self.width
- scaled_image = self.image.resize((width, scaled_height), Image.ANTIALIAS)
+ scaled_image = self._resize(width, scaled_height)
crop_top = (scaled_height - height) // 2
crop_bottom = height + crop_top
cropped = scaled_image.crop((0, crop_top, width, crop_bottom))
else:
scaled_width = (height * self.width) // self.height
- scaled_image = self.image.resize((scaled_width, height), Image.ANTIALIAS)
+ scaled_image = self._resize(scaled_width, height)
crop_left = (scaled_width - width) // 2
crop_right = width + crop_left
cropped = scaled_image.crop((crop_left, 0, crop_right, height))
diff --git a/synapse/rest/media/v1/upload_resource.py b/synapse/rest/media/v1/upload_resource.py
index 5d76bbdf68..83d005812d 100644
--- a/synapse/rest/media/v1/upload_resource.py
+++ b/synapse/rest/media/v1/upload_resource.py
@@ -17,7 +17,7 @@ import logging
from twisted.web.server import NOT_DONE_YET
-from synapse.api.errors import SynapseError
+from synapse.api.errors import Codes, SynapseError
from synapse.http.server import (
DirectServeResource,
respond_with_json,
@@ -56,7 +56,11 @@ class UploadResource(DirectServeResource):
if content_length is None:
raise SynapseError(msg="Request must specify a Content-Length", code=400)
if int(content_length) > self.max_upload_size:
- raise SynapseError(msg="Upload request body is too large", code=413)
+ raise SynapseError(
+ msg="Upload request body is too large",
+ code=413,
+ errcode=Codes.TOO_LARGE,
+ )
upload_name = parse_string(request, b"filename", encoding=None)
if upload_name:
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