Examples of java.awt.image.ColorConvertOp.filter()

java.awt.image.ColorConvertOp.filter()
ColorConverts the source BufferedImage. If the destination image is null, a BufferedImage will be created with an appropriate ColorModel. @param src the source BufferedImage to be converted @param dest the destination BufferedImage, or null @return dest color converted from src or a new, converted BufferedImage if dest is null @exception IllegalArgumentException if dest is null and this op wasconstructed using the constructor which takes only a RenderingHints argument, since the operation is ill defined.

    // Simpler tests (ie, src != dest) are skipped, assume they work here if
    // they worked earlier
    
    try
    {
      BufferedImage dst = op.filter(img, null);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_RGB);
      // PYCC would have been ColorSpace.TYPE_3CLR
    }
    catch (IllegalArgumentException e)
    {

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    }
   
    try
    {
      BufferedImage dst = new BufferedImage(20, 20, BufferedImage.TYPE_INT_ARGB_PRE);
      op.filter(img, dst);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_RGB);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);

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                                               ICC_Profile.getInstance(ColorSpace.CS_sRGB)};
    ColorConvertOp op = new ColorConvertOp(profile, null);
    
    try
    {
      BufferedImage dst = op.filter(img, null);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_RGB);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);

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    }
    
    try
    {
      BufferedImage dst = new BufferedImage(20, 20, BufferedImage.TYPE_BYTE_GRAY);
      dst = op.filter(img, dst);
      harness.check(dst.getColorModel().getColorSpace().getType(), ColorSpace.TYPE_GRAY);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(false);

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    // Src and dst rasters cannot be the same (different from 
    // filter(BufferedImage, BufferedImage) )
    try
    {
      op.filter(raster, raster);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);

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    // Src and dst are different sizes (not allowed, unlike some other Ops)
    BufferedImage dst = new BufferedImage(30, 40, BufferedImage.TYPE_BYTE_GRAY);
    WritableRaster raster2 = dst.getRaster();
    try
    {
      op.filter(raster, raster2);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);

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    {
      harness.check(true);
    }
    
    // Null destination
    WritableRaster dstRaster = op.filter(raster, null);
    harness.check(dstRaster.getTransferType(), op.createCompatibleDestRaster(raster).getTransferType());
    harness.check(dstRaster.getNumBands(), op.createCompatibleDestRaster(raster).getNumBands());
    harness.check(dstRaster.getNumDataElements(), op.createCompatibleDestRaster(raster).getNumDataElements());


    // Incompatible constructor (ie, not enough information)

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    // Incompatible constructor (ie, not enough information)
    op = new ColorConvertOp(null);
    try
    {
      op.filter(raster, null);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);

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    }
    
    op = new ColorConvertOp(cs1, null);
    try
    {
      op.filter(raster, null);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);

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    op = new ColorConvertOp(cs1, cs2, null);
    dstRaster = new BufferedImage(20, 20, BufferedImage.TYPE_INT_ARGB).getRaster();
    
    try
    {
      op.filter(raster, dstRaster);
      harness.check(false);
    }
    catch (IllegalArgumentException e)
    {
      harness.check(true);

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