[PDFBOX-5787] LCMS error 13: Mismatched alpha channels

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.2 PDFBox
• Fix Version/s: 2.0.31, 3.0.3 PDFBox, 4.0.0
• Component/s: Rendering
• Assignee: Tilman Hausherr
• Reporter: Niklas
• Created: 17/Mar/24 15:58
• Updated: 24/Mar/24 18:12
• Resolved: 20/Mar/24 09:51

Description

Using Kotlin to load the first page and trying to render it as an `BufferedImage`:

```kotlin
val pdf = Loader.loadPDF(file)
val preview = PDFRenderer(pdf).renderImage(0, 1.0f)
```

with a PDF, I'm running into:

```
Exception in thread "main" java.awt.color.CMMException: LCMS error 13: Mismatched alpha channels
    at java.desktop/sun.java2d.cmm.lcms.LCMS.createNativeTransform(Native Method)
    at java.desktop/sun.java2d.cmm.lcms.LCMS.createTransform(LCMS.java:113)
    at java.desktop/sun.java2d.cmm.lcms.LCMSTransform.doTransform(LCMSTransform.java:114)
    at java.desktop/sun.java2d.cmm.lcms.LCMSTransform.colorConvert(LCMSTransform.java:149)
    at java.desktop/java.awt.image.ColorConvertOp.ICCBIFilter(ColorConvertOp.java:350)
    at java.desktop/java.awt.image.ColorConvertOp.filter(ColorConvertOp.java:277)
    at org.apache.pdfbox.pdmodel.graphics.color.PDColorSpace.toRGBImageAWT(PDColorSpace.java:375)
    at org.apache.pdfbox.pdmodel.graphics.color.PDDeviceCMYK.toRGBImageAWT(PDDeviceCMYK.java:212)
    at org.apache.pdfbox.pdmodel.graphics.color.PDDeviceCMYK.toRGBImage(PDDeviceCMYK.java:159)
    at org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.from8bit(SampledImageReader.java:506)
    at org.apache.pdfbox.pdmodel.graphics.image.SampledImageReader.getRGBImage(SampledImageReader.java:217)
    at org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.getImage(PDImageXObject.java:477)
    at org.apache.pdfbox.pdmodel.graphics.image.PDImageXObject.getImage(PDImageXObject.java:438)
    at org.apache.pdfbox.rendering.PageDrawer.drawImage(PageDrawer.java:1106)
    at org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:74)
    at org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:893)
    at org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:531)
    at org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:506)
    at org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:153)
    at org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:286)
    at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:330)
    at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:247)
    at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:207)
```

Would it be possible to somehow privately share the PDF? It's slightly sensitive as it is from a customer of mine and I would not want to share it publicly.