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Added two more metadata dates to fall back to, instead of file date. This fixes the png-test

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This commit is contained in:
gras 2024-02-11 22:35:19 +01:00
parent a2c9208706
commit 25acd6f30d
2 changed files with 13 additions and 3 deletions
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14
src/backend/model/fileaccess/MetadataLoader.ts
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@ -39,7 +39,7 @@ export class MetadataLoader {
try {
const stat = fs.statSync(fullPath);
metadata.fileSize = stat.size;
metadata.creationDate = stat.mtime.getTime();
metadata.creationDate = stat.mtime.getTime(); //Default date is file system time of last modification
} catch (err) {
console.log(err);
// ignoring errors
@ -359,8 +359,10 @@ export class MetadataLoader {
//if (exif.ifd0.ModifyDate) {} //Deferred to the exif-section where the other timestamps are
}
//exif section
//exif section starting with the date sectino
if (exif.exif) {
//Preceedence of dates: exif.DateTimeOriginal, exif.CreateDate, ifd0.ModifyDate, ihdr["Creation Time"], xmp.MetadataDate, file system date
//Filesystem is the absolute last resort, and it's hard to write tests for, since file system dates are changed on e.g. git clone.
if (exif.exif.DateTimeOriginal) {
//DateTimeOriginal is when the camera shutter closed
if (exif.exif.OffsetTimeOriginal) { //OffsetTimeOriginal is the corresponding offset
@ -391,6 +393,14 @@ export class MetadataLoader {
metadata.creationDate = timestampToMS(exif.ifd0.ModifyDate, alt_offset);
metadata.creationDateOffset = alt_offset;
}
} else if (exif.ihdr && exif.ihdr["Creation Time"]) {// again else if (another fallback date if the good ones aren't there) {
const any_offset = exif.exif.DateTimeOriginal || exif.exif.OffsetTimeDigitized || exif.exif.OffsetTime || getTimeOffsetByGPSStamp(exif.ifd0.ModifyDate, exif.exif.GPSTimeStamp, exif.gps);
metadata.creationDate = timestampToMS(exif.ihdr["Creation Time"], any_offset);
metadata.creationDateOffset = any_offset;
} else if (exif.xmp?.MetadataDate) {// again else if (another fallback date if the good ones aren't there - metadata date is probably later than actual creation date, but much better than file time) {
const any_offset = exif.exif.DateTimeOriginal || exif.exif.OffsetTimeDigitized || exif.exif.OffsetTime || getTimeOffsetByGPSStamp(exif.ifd0.ModifyDate, exif.exif.GPSTimeStamp, exif.gps);
metadata.creationDate = timestampToMS(exif.xmp.MetadataDate, any_offset);
metadata.creationDateOffset = any_offset;
}
if (exif.exif.LensModel && exif.exif.LensModel !== '') {
metadata.cameraData = metadata.cameraData || {};

2
test/backend/assets/test_png.json
View File

@ -25,5 +25,5 @@
"height": 26,
"width": 26
},
"creationDate": 1707171121504
"creationDate": 1544748139000
}