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From "Luis Bernardo (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (XGC-102) Problem in rendering PNG images with ImageLoaderRawPNG in XMLGraphics 2.0.1 and FOP2.0
Date Wed, 18 Nov 2015 12:30:11 GMT

    [ https://issues.apache.org/jira/browse/XGC-102?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15010892#comment-15010892
] 

Luis Bernardo commented on XGC-102:
-----------------------------------

ImageLoaderRawPNG was not available in FOP 1.0. Can you provide the output generated with
FOP 1.0 and the original PNG used?. I think the issue you see is not resolution but the gamma
chunk. The ImageLoaderRawPNG does not handle the gamma chunk. And not all viewers apply the
gamma transformation. It is possible that the ImageLoaderImageIO applies the gamma transformation,
in which case you get the desired output, even if it looks different from what your viewer
shows (if the viewer ignores the gamma chunk).

> Problem in rendering PNG images with ImageLoaderRawPNG in XMLGraphics 2.0.1 and FOP2.0
> --------------------------------------------------------------------------------------
>
>                 Key: XGC-102
>                 URL: https://issues.apache.org/jira/browse/XGC-102
>             Project: XMLGraphicsCommons
>          Issue Type: Bug
>          Components: general
>    Affects Versions: 2.0.1
>         Environment: FOP 2.0., PDF rendering of a PNG Image using ImageLoaderRawPNG
>            Reporter: Mandar Nimbkar
>             Fix For: 2.0.1
>
>         Attachments: Docs.zip, FOP_2.0.rar, Images.rar
>
>
> I am migrating from FOP 1.0 to FOP 2.0
> I have made the required Java code changes as per the changed API.
> There are PNG images used in the report generated using PDF renderer..
> Initially with FOP 1.0, I tried ImageLoaderPNG. However, the resolution of the image
gets impacted. So I shifted to ImageLoaderRawPNG which rendered it properly.
> So this was working fine with FOP 1.0
> However, FOP 2.0 is not able to render the image with ImageLoaderRawPNG and throws exception..
> Attached the PNG image, exception and  the intermediate XSL-FO file (partial) generated
with ImageLoaderRawPNG.



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