[Digikam-devel] [Bug 161783] exif autorotation on import should be backgrounded / pipelined

[Gilles Caulier]

https://bugs.kde.org/show_bug.cgi?id=161783

--- Comment #13 from Gilles Caulier <caulier.gilles at gmail.com> ---
Islam,

The real choice to parallel programming interface choice will depend of a
technical issue, reported in the past in bugzilla.

The problem is simple : when user connect a DLSR to computer to upload item
from device to digiKam, this can take a while. During this operation, device
battery will be discharged, which can be a problem in pro photograph workflow. 

Note that not all photographer have a stand alone memory card reader or
included with computer, especially during a trip. Photographer use camera as
memory card reader as well...

Currently, in 2.6.0, digiKam download items and process process batch operation
when item is in computer. This is done, step by step, for each item.

The ideal case, to limit camera battery time consuming, is to download all
items in one time, and to process batch operation after downloading process.
Like this we can said to user that all items are now stored in computer and it
can disconnect device from computer. The batch operation do not require camera
anymore...

As you can see, the way to separate downloading and batch operations using
parallel programming interface is important... I don't know which API can offer
you to do it in easy way...

Gilles Caulier

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