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Add support for webp thumbnailing (#7586)

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Closes #4382

Signed-off-by: Maxim Plotnikov <wgh@torlan.ru>
This commit is contained in:
WGH 2020-06-05 13:54:27 +03:00 committed by GitHub
parent f4e6495b5d
commit e55ee7c32f
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3 changed files with 101 additions and 36 deletions
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1
changelog.d/7586.feature Normal file
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@ -0,0 +1 @@
Add support for generating thumbnails for WebP images. Previously, users would see an empty box instead of preview image.

1
synapse/config/repository.py
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@ -70,6 +70,7 @@ def parse_thumbnail_requirements(thumbnail_sizes):
jpeg_thumbnail = ThumbnailRequirement(width, height, method, "image/jpeg")
png_thumbnail = ThumbnailRequirement(width, height, method, "image/png")
requirements.setdefault("image/jpeg", []).append(jpeg_thumbnail)
requirements.setdefault("image/webp", []).append(jpeg_thumbnail)
requirements.setdefault("image/gif", []).append(png_thumbnail)
requirements.setdefault("image/png", []).append(png_thumbnail)
return {

135
tests/rest/media/v1/test_media_storage.py
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@ -18,10 +18,16 @@ import os
import shutil
import tempfile
from binascii import unhexlify
from io import BytesIO
from typing import Optional
from mock import Mock
from six.moves.urllib import parse
import attr
import PIL.Image as Image
from parameterized import parameterized_class
from twisted.internet.defer import Deferred
from synapse.logging.context import make_deferred_yieldable
@ -94,6 +100,68 @@ class MediaStorageTests(unittest.HomeserverTestCase):
self.assertEqual(test_body, body)
@attr.s
class _TestImage:
"""An image for testing thumbnailing with the expected results
Attributes:
data: The raw image to thumbnail
content_type: The type of the image as a content type, e.g. "image/png"
extension: The extension associated with the format, e.g. ".png"
expected_cropped: The expected bytes from cropped thumbnailing, or None if
test should just check for success.
expected_scaled: The expected bytes from scaled thumbnailing, or None if
test should just check for a valid image returned.
"""
data = attr.ib(type=bytes)
content_type = attr.ib(type=bytes)
extension = attr.ib(type=bytes)
expected_cropped = attr.ib(type=Optional[bytes])
expected_scaled = attr.ib(type=Optional[bytes])
@parameterized_class(
("test_image",),
[
# smol png
(
_TestImage(
unhexlify(
b"89504e470d0a1a0a0000000d4948445200000001000000010806"
b"0000001f15c4890000000a49444154789c63000100000500010d"
b"0a2db40000000049454e44ae426082"
),
b"image/png",
b".png",
unhexlify(
b"89504e470d0a1a0a0000000d4948445200000020000000200806"
b"000000737a7af40000001a49444154789cedc101010000008220"
b"ffaf6e484001000000ef0610200001194334ee0000000049454e"
b"44ae426082"
),
unhexlify(
b"89504e470d0a1a0a0000000d4948445200000001000000010806"
b"0000001f15c4890000000d49444154789c636060606000000005"
b"0001a5f645400000000049454e44ae426082"
),
),
),
# small lossless webp
(
_TestImage(
unhexlify(
b"524946461a000000574542505650384c0d0000002f0000001007"
b"1011118888fe0700"
),
b"image/webp",
b".webp",
None,
None,
),
),
],
)
class MediaRepoTests(unittest.HomeserverTestCase):
hijack_auth = True
@ -151,13 +219,6 @@ class MediaRepoTests(unittest.HomeserverTestCase):
self.download_resource = self.media_repo.children[b"download"]
self.thumbnail_resource = self.media_repo.children[b"thumbnail"]
# smol png
self.end_content = unhexlify(
b"89504e470d0a1a0a0000000d4948445200000001000000010806"
b"0000001f15c4890000000a49444154789c63000100000500010d"
b"0a2db40000000049454e44ae426082"
)
self.media_id = "example.com/12345"
def _req(self, content_disposition):
@ -176,14 +237,14 @@ class MediaRepoTests(unittest.HomeserverTestCase):
self.assertEqual(self.fetches[0][3], {"allow_remote": "false"})
headers = {
b"Content-Length": [b"%d" % (len(self.end_content))],
b"Content-Type": [b"image/png"],
b"Content-Length": [b"%d" % (len(self.test_image.data))],
b"Content-Type": [self.test_image.content_type],
}
if content_disposition:
headers[b"Content-Disposition"] = [content_disposition]
self.fetches[0][0].callback(
(self.end_content, (len(self.end_content), headers))
(self.test_image.data, (len(self.test_image.data), headers))
)
self.pump()
@ -196,12 +257,15 @@ class MediaRepoTests(unittest.HomeserverTestCase):
If the filename is filename=<ascii> then Synapse will decode it as an
ASCII string, and use filename= in the response.
"""
channel = self._req(b"inline; filename=out.png")
channel = self._req(b"inline; filename=out" + self.test_image.extension)
headers = channel.headers
self.assertEqual(headers.getRawHeaders(b"Content-Type"), [b"image/png"])
self.assertEqual(
headers.getRawHeaders(b"Content-Disposition"), [b"inline; filename=out.png"]
headers.getRawHeaders(b"Content-Type"), [self.test_image.content_type]
)
self.assertEqual(
headers.getRawHeaders(b"Content-Disposition"),
[b"inline; filename=out" + self.test_image.extension],
)
def test_disposition_filenamestar_utf8escaped(self):
@ -211,13 +275,17 @@ class MediaRepoTests(unittest.HomeserverTestCase):
response.
"""
filename = parse.quote("\u2603".encode("utf8")).encode("ascii")
channel = self._req(b"inline; filename*=utf-8''" + filename + b".png")
channel = self._req(
b"inline; filename*=utf-8''" + filename + self.test_image.extension
)
headers = channel.headers
self.assertEqual(headers.getRawHeaders(b"Content-Type"), [b"image/png"])
self.assertEqual(
headers.getRawHeaders(b"Content-Type"), [self.test_image.content_type]
)
self.assertEqual(
headers.getRawHeaders(b"Content-Disposition"),
[b"inline; filename*=utf-8''" + filename + b".png"],
[b"inline; filename*=utf-8''" + filename + self.test_image.extension],
)
def test_disposition_none(self):
@ -228,27 +296,16 @@ class MediaRepoTests(unittest.HomeserverTestCase):
channel = self._req(None)
headers = channel.headers
self.assertEqual(headers.getRawHeaders(b"Content-Type"), [b"image/png"])
self.assertEqual(
headers.getRawHeaders(b"Content-Type"), [self.test_image.content_type]
)
self.assertEqual(headers.getRawHeaders(b"Content-Disposition"), None)
def test_thumbnail_crop(self):
expected_body = unhexlify(
b"89504e470d0a1a0a0000000d4948445200000020000000200806"
b"000000737a7af40000001a49444154789cedc101010000008220"
b"ffaf6e484001000000ef0610200001194334ee0000000049454e"
b"44ae426082"
)
self._test_thumbnail("crop", expected_body)
self._test_thumbnail("crop", self.test_image.expected_cropped)
def test_thumbnail_scale(self):
expected_body = unhexlify(
b"89504e470d0a1a0a0000000d4948445200000001000000010806"
b"0000001f15c4890000000d49444154789c636060606000000005"
b"0001a5f645400000000049454e44ae426082"
)
self._test_thumbnail("scale", expected_body)
self._test_thumbnail("scale", self.test_image.expected_scaled)
def _test_thumbnail(self, method, expected_body):
params = "?width=32&height=32&method=" + method
@ -259,13 +316,19 @@ class MediaRepoTests(unittest.HomeserverTestCase):
self.pump()
headers = {
b"Content-Length": [b"%d" % (len(self.end_content))],
b"Content-Type": [b"image/png"],
b"Content-Length": [b"%d" % (len(self.test_image.data))],
b"Content-Type": [self.test_image.content_type],
}
self.fetches[0][0].callback(
(self.end_content, (len(self.end_content), headers))
(self.test_image.data, (len(self.test_image.data), headers))
)
self.pump()
self.assertEqual(channel.code, 200)
self.assertEqual(channel.result["body"], expected_body, channel.result["body"])
if expected_body is not None:
self.assertEqual(
channel.result["body"], expected_body, channel.result["body"]
)
else:
# ensure that the result is at least some valid image
Image.open(BytesIO(channel.result["body"]))