[digikam] [Bug 441648] preview of next/previous HEIF (iPhone) image is very slow

[Maik Qualmann]

https://bugs.kde.org/show_bug.cgi?id=441648

--- Comment #12 from Maik Qualmann <metzpinguin at gmail.com> ---
Yes, that's an optimization if you don't know how much memory is required. It's
faster to request larger blocks than to constantly expand with small blocks.
Something similar for QVector with QVector::reserve().

https://doc.qt.io/qt-5/qvector.html#reserve

Maik

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