XImage.FromFile/FromStream throws InvalidOperationException (Unsupported image format.) for valid JPGs

[jirikanda]

See Issue.zip

The root cause

I guess the ImageImporterJpeg is missing the following feature:

Entropy-coded data segments (https://www.w3.org/Graphics/JPEG/itu-t81.pdf)

In order to ensure that a marker does not occur within an entropy-coded segment, any X’FF’ byte generated by either a Huffman or arithmetic encoder, or an X’FF’ byte that was generated by the padding of 1-bits described in NOTE 1 above, is followed by a “stuffed” zero byte...

PR with fix will follow.

[ThomasHoevel]

See #304

[PDFsharp-Team]

Fixed in 6.2.4. Thanks for your support.