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https://issues.apache.org/jira/browse/SANSELAN-5?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Charles Matthew Chen resolved SANSELAN-5.
-----------------------------------------
Resolution: Fixed
Assignee: Charles Matthew Chen (was: Carsten Ziegeler)
Fixed two issues in the PNG reader. Wasn't handling the 16-bit mode 4 PNGs
properly. Also, wasn't gamma-correcting non-palette values properly in PNGs.
> Can't convert PNG image to GIF image
> ------------------------------------
>
> Key: SANSELAN-5
> URL: https://issues.apache.org/jira/browse/SANSELAN-5
> Project: Sanselan
> Issue Type: Bug
> Environment: Windows XP SP2, Eclipse IDE, Custom Java database
> conversion program, JRE 1.5.x
> Reporter: Dirk Daems
> Assignee: Charles Matthew Chen
> Priority: Blocker
> Attachments: 12118.png
>
>
> I want to transform a set of PNG images to GIF images.
>
> The code I tried:
> private static void convertImage(String sourceDir, String sourceFile, String
> targetDir){
> try{
>
> BufferedImage source = Sanselan.getBufferedImage(new File(sourceDir +
> File.separator + sourceFile));
> String targetFile = sourceFile.substring(0, sourceFile.indexOf('.')) +
> ".gif";
> Hashtable parms = new Hashtable();
> // parms.put(SanselanConstants.PARAM_KEY_VERBOSE, Boolean.TRUE);
> Sanselan.writeImage(source, new File(targetDir + File.separator +
> targetFile), ImageFormat.IMAGE_FORMAT_GIF, parms);
>
> }
> catch(Exception ex){
> ex.printStackTrace();
> }
>
> }
>
> I don't get any errors but the image that's generated cannot be displayed and
> is way too small (2kb).
> I attached an example of a PNG file I can't seem to convert.
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