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Always return a thumbnail of the requested size.

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Before, we returned a thumbnail that was at least as big (if possible)
as the requested size. Now, if we don't have a thumbnail of the given
size we generate (and persist) one of that size.
This commit is contained in:
Erik Johnston 2015-07-23 14:12:49 +01:00
parent 6886bba988
commit ff7c2e41de
2 changed files with 162 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

81
synapse/rest/media/v1/thumbnail_resource.py
View file

@ -43,11 +43,11 @@ class ThumbnailResource(BaseMediaResource):
m_type = parse_string(request, "type", "image/png")
if server_name == self.server_name:
yield self._respond_local_thumbnail(
yield self._select_or_generate_local_thumbnail(
request, media_id, width, height, method, m_type
)
else:
yield self._respond_remote_thumbnail(
yield self._select_or_generate_remote_thumbnail(
request, server_name, media_id,
width, height, method, m_type
)
@ -82,6 +82,83 @@ class ThumbnailResource(BaseMediaResource):
request, media_info, width, height, method, m_type,
)
@defer.inlineCallbacks
def _select_or_generate_local_thumbnail(self, request, media_id, desired_width,
desired_height, desired_method,
desired_type):
media_info = yield self.store.get_local_media(media_id)
if not media_info:
self._respond_404(request)
return
thumbnail_infos = yield self.store.get_local_media_thumbnails(media_id)
for info in thumbnail_infos:
t_w = info["thumbnail_width"] == desired_width
t_h = info["thumbnail_height"] == desired_height
t_method = info["thumbnail_method"] == desired_method
t_type = info["thumbnail_type"] == desired_type
if t_w and t_h and t_method and t_type:
file_path = self.filepaths.local_media_thumbnail(
media_id, desired_width, desired_height, desired_type, desired_method,
)
yield self._respond_with_file(request, desired_type, file_path)
return
logger.debug("We don't have a local thumbnail of that size. Generating")
# Okay, so we generate one.
file_path = yield self._generate_local_exact_thumbnail(
media_id, desired_width, desired_height, desired_method, desired_type
)
if file_path:
yield self._respond_with_file(request, desired_type, file_path)
else:
yield self._respond_default_thumbnail(
request, media_info, desired_width, desired_height,
desired_method, desired_type,
)
@defer.inlineCallbacks
def _select_or_generate_remote_thumbnail(self, request, server_name, media_id,
desired_width, desired_height,
desired_method, desired_type):
media_info = yield self._get_remote_media(server_name, media_id)
thumbnail_infos = yield self.store.get_remote_media_thumbnails(
server_name, media_id,
)
for info in thumbnail_infos:
t_w = info["thumbnail_width"] == desired_width
t_h = info["thumbnail_height"] == desired_height
t_method = info["thumbnail_method"] == desired_method
t_type = info["thumbnail_type"] == desired_type
if t_w and t_h and t_method and t_type:
file_path = self.filepaths.remote_media_thumbnail(
media_id, desired_width, desired_height, desired_type, desired_method,
)
yield self._respond_with_file(request, desired_type, file_path)
logger.debug("We don't have a local thumbnail of that size. Generating")
# Okay, so we generate one.
path = yield self._generate_remote_exact_thumbnail(
server_name, media_id, desired_width, desired_height,
desired_method, desired_type
)
if path:
yield self._respond_with_file(request, t_type, file_path)
else:
yield self._respond_default_thumbnail(
request, media_info, desired_width, desired_height,
desired_method, desired_type,
)
@defer.inlineCallbacks
def _respond_remote_thumbnail(self, request, server_name, media_id, width,
height, method, m_type):