Allow extra FF bytes preceding JPEG markers #1247
Open
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
From the JPEG specification, B.1.1.2: "Any marker may optionally be preceded by any number of fill bytes, which are bytes assigned code X'FF'."
|
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
We recently encountered a JPEG with extra FF bytes preceding an APPE marker. Most programs ignore those bytes, but they were causing OpenPDF to fail to parse the file.
From the JPEG specification, B.1.1.2: "Any marker may optionally be preceded by any number of fill bytes, which are bytes assigned code X'FF'."