[OpenJDK 2D-Dev] [9] Review request for 8041460, PNGImageWriter creates metadata with incorrect bitDepth

[mikhail cherkasov]

Hi all,

please review the fix:
http://cr.openjdk.java.net/~mcherkas/8041460/webrev.02/
for the following bug:
https://bugs.openjdk.java.net/browse/JDK-8041460

The problem is that during merging of metadata trees we take index of 
IHDR_bitDepths
and set this value to IHDR_bitDepth, but IHDR_bitDepth requires a real 
number of bits.
IHDR_bitDepths - store all valid values: "1", "2", "4", "8", "16", so to 
get
valid value we need: 1 << index.

Thanks,
Mikhail.

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