** Changed in: canonical-devices-system-image
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1391368
Title:
Thumbnail generation is slow when requesting a sourceSize that needs
to be rescaled
Status in the base for Ubuntu mobile products:
Fix Released
Status in Thumbnail generator for all kinds of files:
New
Status in thumbnailer package in Ubuntu:
Fix Released
Status in thumbnailer package in Ubuntu RTM:
Fix Released
Bug description:
The music app sets the "sourceSize" property of the Image component
used for the Thumbnailer image provider. The values used are based on
the size of the displayed image. For instance, on a Nexus 4 in the
Music app's Albums tab this appears to be either "330" or "165"
depending on if it is the full image or if is part of a quadrant/grid.
However, setting the sourceSize to these values causes the
thumbnailing processing to be extremely slow. Simply requesting that
the source be 512 (which is the size of the xlarge) art is much faster
--because I assume the image is not resized.
One or both of the following could/should be done 1) the resizing
needs to be made significantly faster, and/or 2) there needs to be an
API that provides a property so users of the Thumbnailer can request
sizes of 128 (normal), 256 (large), or 512 (xlarge). Hardcoding these
values in the app would cause regression if the Thumbnailing service
ever changed the corresponding default sizes. Ideally I think both of
these enhancements should be made.
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