Rewrite of image meta

[evanoberholster]

Rewrite of imagemeta

[coveralls]

Pull Request Test Coverage Report for Build 4275534749

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

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Details

• 298 of 2481 (12.01%) changed or added relevant lines in 46 files are covered.
• 57 unchanged lines in 4 files lost coverage.
• Overall coverage decreased (-21.2%) to 30.914%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
imagehash/transforms/dct.go	0	1	0.0%
meta/canon/utils.go	0	2	0.0%
xmp/exif.go	0	2	0.0%
meta/meta.go	2	5	40.0%
exif2/ifds/mknote/nikon/tags.go	0	5	0.0%
jpeg/log.go	3	9	33.33%
log.go	0	6	0.0%
exif2/ifds/make.go	0	10	0.0%
exif2/ifds/mknote/canon/canon.go	0	10	0.0%
exif2/ifds/mknote/nikon/nikon.go	3	13	23.08%

Files with Coverage Reduction	New Missed Lines	%
meta/exifTypes_gen.go	1	55.04%
imagemeta.go	3	0.0%
jpeg/jpeg.go	4	68.38%
imagehash/imagehash.go	49	0.0%

Totals
Change from base Build 2741911149:	-21.2%
Covered Lines:	1712
Relevant Lines:	5538

---

💛 - Coveralls

[evanoberholster]

• Stable ImageTypes API
• Exif parsing for jpg, heif, cr2, tiff, and dng
• Exif parsing for CR3
• Camera Make and Model lookup tables
• Stable Imagemeta API
• Canon Makernote initial support
• Nikon Makernote initial support
• Exif parsing for AVIF (ISOBMFF format)
• Exif parsing for CRW (ciff format)
• Preview image extraction
• Test coverage >50%

[evanoberholster]

Issues addressed:

• Exif timezone support Offsets Timezone support in DateTime() #26
• Parse function in imagemeta Will the develop branch have a Parse() function too? #47
• Initial Exif parsing of PNG files PNG image inclussion #41 implemented by @abrander
• Add initial AVIF support, will require further testing Cannot detect Avif Type #44

[mholt]

@evanoberholster I finally had a chance to clone this down and try it out. So far, it works! The Decode() function works nicely and returns timestamp and coordinate data with values as expected. I have yet to try other fields.

Is there a way to get all the extracted EXIF fields? Like a map I can iterate over?

It's OK if these fields don't have any special interpreation: just a key-value store of whatever fields were discovered. This would be easier for me to work with than a huge struct with hard-coded fields. (I think some struct fields are OK, especially if they are common or need interpretation to be useful -- but I'd still like a map of everything that was parsed anyway.)

Sorry if I have a lot of requests 🙃 I think we're getting close to something that works for my use case! 🎉

Excellent job with this, and thank you very much again.

[evanoberholster]

Thanks for the suggestion, as this is an enhancement that will need further work. Would prefer that it were merged from a new PR request. There for I have opened issue #49

The goal is to merge develop as soon as possible as it is a rewrite.

[mholt]

Makes sense - thanks!

[mholt]

Congrats on the rewrite 😃