[OpenJDK 2D-Dev] Review request for JDK - 8041501 : ImageIO reader is not capable of reading JPEGs without JFIF header

[Jayathirth D V]

Hi,

 

This is backport of the fix that is already merged into JDK9.

 

Please review the fix in JDK8u:

 

Bug : https://bugs.openjdk.java.net/browse/JDK-8041501

 

Webrev : http://cr.openjdk.java.net/~jdv/8041501.8u/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