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https://issues.apache.org/jira/browse/IMAGING-186?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15401111#comment-15401111
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Benedikt Ritter commented on IMAGING-186:
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{code}
$ svn ci -m "IMAGING-186: Add sCAL support to PNG reading and writing. Thanks
to Ric Emery. This also closes #23 from GitHub."
Sending src/changes/changes.xml
Sending
src/main/java/org/apache/commons/imaging/formats/png/ChunkType.java
Adding
src/main/java/org/apache/commons/imaging/formats/png/PhysicalScale.java
Sending
src/main/java/org/apache/commons/imaging/formats/png/PngConstants.java
Sending
src/main/java/org/apache/commons/imaging/formats/png/PngImageInfo.java
Sending
src/main/java/org/apache/commons/imaging/formats/png/PngImageParser.java
Sending
src/main/java/org/apache/commons/imaging/formats/png/PngWriter.java
Adding
src/main/java/org/apache/commons/imaging/formats/png/chunks/PngChunkScal.java
Adding
src/test/java/org/apache/commons/imaging/formats/png/PhysicalScaleTest.java
Sending
src/test/java/org/apache/commons/imaging/formats/png/PngWriteReadTest.java
Adding src/test/java/org/apache/commons/imaging/formats/png/chunks
Adding
src/test/java/org/apache/commons/imaging/formats/png/chunks/PngChunkScalTest.java
Transmitting file data ...........done
Committing transaction...
Committed revision 1754653.
{code}
Thank you!
> Add sCAL support to PNG reading and writing
> -------------------------------------------
>
> Key: IMAGING-186
> URL: https://issues.apache.org/jira/browse/IMAGING-186
> Project: Commons Imaging
> Issue Type: Improvement
> Components: Format: PNG
> Reporter: Ric Emery
> Priority: Minor
> Labels: feature, newbie
> Fix For: 1.0
>
>
> It would be nice if the optional PNG - Physical Scale - sCAL chunk could be
> read and written.
> http://www.libpng.org/pub/png/book/chapter11.html#png.ch11.div.9
> For my use case, the pHYs chunk is not a good alternative. the pHYs x and y
> values are ints which lose necessary precision.
> I have a patch (with junits) ready for your review if you are interested.
> Thanks
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