diff options
| -rw-r--r-- | synapse/config/repository.py | 59 | ||||
| -rw-r--r-- | synapse/rest/media/v1/base_resource.py | 82 | ||||
| -rw-r--r-- | synapse/rest/media/v1/thumbnail_resource.py | 106 |
3 files changed, 226 insertions, 21 deletions
diff --git a/synapse/config/repository.py b/synapse/config/repository.py index 6891abd71d..64644b9a7a 100644 --- a/synapse/config/repository.py +++ b/synapse/config/repository.py @@ -14,6 +14,39 @@ # limitations under the License. from ._base import Config +from collections import namedtuple + +ThumbnailRequirement = namedtuple( + "ThumbnailRequirement", ["width", "height", "method", "media_type"] +) + + +def parse_thumbnail_requirements(thumbnail_sizes): + """ Takes a list of dictionaries with "width", "height", and "method" keys + and creates a map from image media types to the thumbnail size, thumnailing + method, and thumbnail media type to precalculate + + Args: + thumbnail_sizes(list): List of dicts with "width", "height", and + "method" keys + Returns: + Dictionary mapping from media type string to list of + ThumbnailRequirement tuples. + """ + requirements = {} + for size in thumbnail_sizes: + width = size["width"] + height = size["height"] + method = size["method"] + 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/gif", []).append(png_thumbnail) + requirements.setdefault("image/png", []).append(png_thumbnail) + return { + media_type: tuple(thumbnails) + for media_type, thumbnails in requirements.items() + } class ContentRepositoryConfig(Config): @@ -22,6 +55,10 @@ class ContentRepositoryConfig(Config): self.max_image_pixels = self.parse_size(config["max_image_pixels"]) self.media_store_path = self.ensure_directory(config["media_store_path"]) self.uploads_path = self.ensure_directory(config["uploads_path"]) + self.dynamic_thumbnails = config["dynamic_thumbnails"] + self.thumbnail_requirements = parse_thumbnail_requirements( + config["thumbnail_sizes"] + ) def default_config(self, config_dir_path, server_name): media_store = self.default_path("media_store") @@ -38,4 +75,26 @@ class ContentRepositoryConfig(Config): # Maximum number of pixels that will be thumbnailed max_image_pixels: "32M" + + # Whether to generate new thumbnails on the fly to precisely match + # the resolution requested by the client. If true then whenever + # a new resolution is requested by the client the server will + # generate a new thumbnail. If false the server will pick a thumbnail + # from a precalcualted list. + dynamic_thumbnails: false + + # List of thumbnail to precalculate when an image is uploaded. + thumbnail_sizes: + - width: 32 + height: 32 + method: crop + - width: 96 + height: 96 + method: crop + - width: 320 + height: 240 + method: scale + - width: 640 + height: 480 + method: scale """ % locals() diff --git a/synapse/rest/media/v1/base_resource.py b/synapse/rest/media/v1/base_resource.py index 84e1961a21..4e21527c3d 100644 --- a/synapse/rest/media/v1/base_resource.py +++ b/synapse/rest/media/v1/base_resource.py @@ -69,6 +69,8 @@ class BaseMediaResource(Resource): self.filepaths = filepaths self.version_string = hs.version_string self.downloads = {} + self.dynamic_thumbnails = hs.config.dynamic_thumbnails + self.thumbnail_requirements = hs.config.thumbnail_requirements def _respond_404(self, request): respond_with_json( @@ -208,22 +210,74 @@ class BaseMediaResource(Resource): self._respond_404(request) def _get_thumbnail_requirements(self, media_type): - if media_type == "image/jpeg": - return ( - (32, 32, "crop", "image/jpeg"), - (96, 96, "crop", "image/jpeg"), - (320, 240, "scale", "image/jpeg"), - (640, 480, "scale", "image/jpeg"), - ) - elif (media_type == "image/png") or (media_type == "image/gif"): - return ( - (32, 32, "crop", "image/png"), - (96, 96, "crop", "image/png"), - (320, 240, "scale", "image/png"), - (640, 480, "scale", "image/png"), + return self.thumbnail_requirements.get(media_type, ()) + + def _generate_thumbnail(self, input_path, t_path, t_width, t_height, + t_method, t_type): + thumbnailer = Thumbnailer(input_path) + m_width = thumbnailer.width + m_height = thumbnailer.height + + if m_width * m_height >= self.max_image_pixels: + logger.info( + "Image too large to thumbnail %r x %r > %r", + m_width, m_height, self.max_image_pixels ) + return + + if t_method == "crop": + t_len = thumbnailer.crop(t_path, t_width, t_height, t_type) + elif t_method == "scale": + t_len = thumbnailer.scale(t_path, t_width, t_height, t_type) else: - return () + t_len = None + + return t_len + + @defer.inlineCallbacks + def _generate_local_exact_thumbnail(self, media_id, t_width, t_height, + t_method, t_type): + input_path = self.filepaths.local_media_filepath(media_id) + + t_path = self.filepaths.local_media_thumbnail( + media_id, t_width, t_height, t_type, t_method + ) + self._makedirs(t_path) + + t_len = yield threads.deferToThread( + self._generate_thumbnail, + input_path, t_path, t_width, t_height, t_method, t_type + ) + + if t_len: + yield self.store.store_local_thumbnail( + media_id, t_width, t_height, t_type, t_method, t_len + ) + + defer.returnValue(t_path) + + @defer.inlineCallbacks + def _generate_remote_exact_thumbnail(self, server_name, file_id, media_id, + t_width, t_height, t_method, t_type): + input_path = self.filepaths.remote_media_filepath(server_name, file_id) + + t_path = self.filepaths.remote_media_thumbnail( + server_name, file_id, t_width, t_height, t_type, t_method + ) + self._makedirs(t_path) + + t_len = yield threads.deferToThread( + self._generate_thumbnail, + input_path, t_path, t_width, t_height, t_method, t_type + ) + + if t_len: + yield self.store.store_remote_media_thumbnail( + server_name, media_id, file_id, + t_width, t_height, t_type, t_method, t_len + ) + + defer.returnValue(t_path) @defer.inlineCallbacks def _generate_local_thumbnails(self, media_id, media_info): diff --git a/synapse/rest/media/v1/thumbnail_resource.py b/synapse/rest/media/v1/thumbnail_resource.py index 61f88e486e..e506dad934 100644 --- a/synapse/rest/media/v1/thumbnail_resource.py +++ b/synapse/rest/media/v1/thumbnail_resource.py @@ -43,14 +43,25 @@ class ThumbnailResource(BaseMediaResource): m_type = parse_string(request, "type", "image/png") if server_name == self.server_name: - yield self._respond_local_thumbnail( - request, media_id, width, height, method, m_type - ) + if self.dynamic_thumbnails: + yield self._select_or_generate_local_thumbnail( + request, media_id, width, height, method, m_type + ) + else: + yield self._respond_local_thumbnail( + request, media_id, width, height, method, m_type + ) else: - yield self._respond_remote_thumbnail( - request, server_name, media_id, - width, height, method, m_type - ) + if self.dynamic_thumbnails: + yield self._select_or_generate_remote_thumbnail( + request, server_name, media_id, + width, height, method, m_type + ) + else: + yield self._respond_remote_thumbnail( + request, server_name, media_id, + width, height, method, m_type + ) @defer.inlineCallbacks def _respond_local_thumbnail(self, request, media_id, width, height, @@ -83,6 +94,87 @@ class ThumbnailResource(BaseMediaResource): ) @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, + ) + + file_id = media_info["filesystem_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( + server_name, file_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_remote_exact_thumbnail( + server_name, file_id, 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 _respond_remote_thumbnail(self, request, server_name, media_id, width, height, method, m_type): # TODO: Don't download the whole remote file |