0.98.1: Degraded HEIF performance for unicode files

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zzqnsnna
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Joined: Tue Feb 23, 2021 3:40 am

0.98.1: Degraded HEIF performance for unicode files

Post by zzqnsnna »

XnView: MP 0.98.1 - 64-bit
OS: Windows 10 - 64-bit

Effect: I observed degraded HEIF performance if file name contains Unicode and windows settings "Language for non-Unicode programs" doesn't match file name characters. If I change "Language for non-Unicode programs" to match file name characters, the performance improved dramatically.

Attached thread dump in the degraded scenario. I guess there is a different branches in XnViewMP code base. If heif_context_read_from_file fails, it switches to transitional fget and causes the degraded decode performance.
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xnview
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Joined: Mon Oct 13, 2003 7:31 am
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Re: 0.98.1: Degraded HEIF performance for unicode files

Post by xnview »

right, the problem is that heif_context_read_from_file doesn't support unicode
Pierre.
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