Feature #475

Performance: Don't read TIFF-based files completely

Added by Andreas Huggel almost 11 years ago. Updated over 8 years ago.

Status:ClosedStart date:
Priority:NormalDue date:
Assignee:Andreas Huggel% Done:

0%

Category:design
Target version:0.11

Description

TIFF and TIFF-based RAW files tend to be large. Loading the whole file into memory takes time. In practice, the metadata is usually located at the beginning of the file, although the TIFF standard doesn't require this.
A smarter load mechanism is required to avoid reading the whole picture if it is n ot necessary.


Related issues

Related to Exiv2 - Feature #579: Implement memory mapping for Windows platforms Closed

History

#1 Updated by Andreas Huggel over 10 years ago

Addressed with mmap approach, which improves read performance by factor 6.
Testing.

#2 Updated by Andreas Huggel over 10 years ago

Closing this, no complaints so far.

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