[OpenJDK 2D-Dev] <OpenJDK 2D-Dev> Review request for JDK - 8146972 : ImageIO reader is not capable of reading JPEGs without JFIF header

[Jayathirth D V]

Hi,

 

This is backport of fix from JDK 9 bug : https://bugs.openjdk.java.net/browse/JDK-8041501 to JDK 8u. Changes in JDK9 are already checked in.

 

Please review the fix:

 

Bug : https://bugs.openjdk.java.net/browse/JDK-8146972 

 

Webrev : http://cr.openjdk.java.net/~jdv/8146972/webrev.00/ 

 

Issue : Pink discoloration when we read JPEG images without JFIF & EXIF header and having no subsampling.

 

Root cause : We are overriding JPEG color space set in IJG library at imageioJPEG.c without checking component ID's properly when JFIF & EXIF are not there. Decision to change color space is solely done consulting sampling factors.

 

Solution : Added extra check to verify component ID's also before changing color space determined by IJG library when there is no JFIF & EXIF header.

 

Thanks,

Jay

 
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