drewnoakes/metadata-extractor

End of data reached when parsing photoshop directory of jpg

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#551 建立於 2021年8月30日

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 (2 留言) (0 反應) (0 負責人)Java (2,411 star) (470 fork)batch import
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描述

One of our photographers had a problem with the image linked below. The actual error that happens is "End of data reached." for the Photoshop directory. He told me the problem persisted even after cropping the image. This leads me to believe it is not simply a corrupt image but either a bug in either Lightroom (that outputs invalid meta data) or in this library.

What also smells funny is that it ends up producing two Photoshop directories with errors in them. I read in the PhotoshopReader class that it will produce both Photoshop and IPTC directories so maybe it is the culprint.

image

https://www.dust2.dk/img/problemsample.jpg

貢獻者指南

技術棧
java
領域
backenddatatooling
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
3
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-2 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
stale
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
needs investigation
前置要求
Java knowledgeImage metadata formatsFamiliarity with metadata extractor library
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
30
研究方向
Investigate the PhotoshopReader class, particularly the parsing logic that leads to 'End of data reached' and duplicate directories. Reproduce the issue using the sample image linked. Examine how Photoshop and IPTC directories are handled to identify the root cause of the parsing failure and duplication.