[Git][wine/wine][master] 2 commits: windowscodecs/tests: Add some tests for multi-frame tiffs vs SUBFILETYPE tag.

[Alexandre Julliard (＠julliard)]

Alexandre Julliard pushed to branch master at wine / wine

Commits:
93142366 by Nikolay Sivov at 2025-05-13T10:51:30+02:00
windowscodecs/tests: Add some tests for multi-frame tiffs vs SUBFILETYPE tag.

Signed-off-by: Nikolay Sivov

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742c7440 by Nikolay Sivov at 2025-05-13T10:51:32+02:00
windowscodecs/tiff: Skip frames marked with SUBFILETYPE(0x1).

This is important for RAW formats that use TIFF container, but mark
directories as 'reduced-size'. Those files should be processed with
appropriate RAW decoder, instead of displaying auxiliary frame with
the TIFF decoder.

Unfortunately libtiff skips old tag OSUBFILETYPE == 0xff,
it's not available via TIFFGetField() and SUBFILETYPE is not synthesized
from it. On Windows both tags have the same effect on frames
being skipped by the decoder.

Signed-off-by: Nikolay Sivov

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2 changed files:

- dlls/windowscodecs/libtiff.c
- dlls/windowscodecs/tests/tiffformat.c

View it on GitLab: https://gitlab.winehq.org/wine/wine/-/compare/bceff039c85231dc6c44eb88038fa3...