Hello Everyone
Good day to you.
Request your time to review a simple fix for the bug
Bug: JDK-4954348 (https://bugs.openjdk.java.net/browse/JDK-4954348)
Title: JPGWriter.getNumThumbnailsSupported does not return -1 when passing
null values
Root Cause:
. As per ImageWriter specification, the method- getNumThumbnailsSupported,
should return -1 when invoked with insufficient data.
. However, the method's implementation in JpegImageWriter returns 0 instead
of -1 in this use-case.
Information on the fix:
. The logic within concerned method of Jpeg image writer requires one of
the two inputs- ImageTypeSpecifer (or) IIOMetadata.
. If both the required inputs are 'Null' the method has insufficient data &
thus cannot validate.
. A simple check is now added in the method to detect this use-case and
return -1 as recommended in the specification.
Kindly review the changes at your convenience
Link: http://cr.openjdk.java.net/~pnarayanan/4954348/webrev.00
Thank you
Have a good day
Prahalad N.
