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  1. PDFBox
  2. PDFBOX-3981

It won't catch the exception when read the CMYK image in PDF for DCTFilter.class

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Incomplete
    • Affects Version/s: 2.0.7
    • Fix Version/s: None
    • Component/s: None
    • Labels:
    • Environment:
      Windows/Liunx

      Description

      In below code of DCTFilter.class, can't catch the IIOException because the right Exception is IOException.

      And when I change the code, in my testing, when I convert the PDF to image, I found the CMYK image will be lost in converted image, it's very strange when I set "String numChannels = '2'", I got positive result.

                  if ("3".equals(numChannels) || numChannels.isEmpty())
                  {
                      try
                      {
                          // I'd like to use ImageReader#readRaster but it is buggy and can't read RGB correctly
                          BufferedImage image = reader.read(0);
                          raster = image.getRaster();
                      }
                      catch (IIOException e)
                      {
                          // JAI can't read CMYK JPEGs using ImageReader#read or ImageIO.read but
                          // fortunately ImageReader#readRaster isn't buggy when reading 4-channel files
                          raster = reader.readRaster(0, null);
                      }
                  }
      

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            • Assignee:
              Unassigned
              Reporter:
              cdfly813 austinchen
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                Updated:
                Resolved: