Examples of java.awt.image.ComponentSampleModel

java.awt.image.ComponentSampleModel
This class represents image data which is stored such that each sample of a pixel occupies one data element of the DataBuffer. It stores the N samples which make up a pixel in N separate data array elements. Different bands may be in different banks of the DataBuffer. Accessor methods are provided so that image data can be manipulated directly. This class can support different kinds of interleaving, e.g. band interleaving, scanline interleaving, and pixel interleaving. Pixel stride is the number of data array elements between two samples for the same band on the same scanline. Scanline stride is the number of data array elements between a given sample and the corresponding sample in the same column of the next scanline. Band offsets denote the number of data array elements from the first data array element of the bank of the DataBuffer holding each band to the first sample of the band. The bands are numbered from 0 to N-1. This class can represent image data for which each sample is an unsigned integral number which can be stored in 8, 16, or 32 bits (using DataBuffer.TYPE_BYTE, DataBuffer.TYPE_USHORT, or DataBuffer.TYPE_INT, respectively), data for which each sample is a signed integral number which can be stored in 16 bits (using DataBuffer.TYPE_SHORT), or data for which each sample is a signed float or double quantity (using DataBuffer.TYPE_FLOAT or DataBuffer.TYPE_DOUBLE, respectively). All samples of a given ComponentSampleModel are stored with the same precision. All strides and offsets must be non-negative. This class supports {@link DataBuffer#TYPE_BYTE TYPE_BYTE}, {@link DataBuffer#TYPE_USHORT TYPE_USHORT}, {@link DataBuffer#TYPE_SHORT TYPE_SHORT}, {@link DataBuffer#TYPE_INT TYPE_INT}, {@link DataBuffer#TYPE_FLOAT TYPE_FLOAT}, {@link DataBuffer#TYPE_DOUBLE TYPE_DOUBLE}, @see java.awt.image.PixelInterleavedSampleModel @see java.awt.image.BandedSampleModel

            } else if (dataClass.isAssignableFrom(Byte.class)) {
                dataType = DataBuffer.TYPE_BYTE;
            }
        }
        if (sampleModel == null) {
            sampleModel = new ComponentSampleModel(dataType, width, height, 1, width, new int[]{0});
        }


        WritableRaster raster = RasterFactory.createWritableRaster(sampleModel, null);
        if (value != null) {
            // autobox only once

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public class equals implements Testlet
{
  public void test(TestHarness harness)
  {
    ComponentSampleModel m1 = new ComponentSampleModel(DataBuffer.TYPE_INT, 
            10, 20, 3, 40, new int[] {0, 1, 2});
    ComponentSampleModel m2 = new ComponentSampleModel(DataBuffer.TYPE_INT, 
            10, 20, 3, 40, new int[] {0, 1, 2});
    harness.check(m1.equals(m2));
    
    m1 = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 
            10, 20, 3, 40, new int[] {0, 1, 2});
    harness.check(!m1.equals(m2));
    m2 = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 
            10, 20, 3, 40, new int[] {0, 1, 2});
    harness.check(m1.equals(m2));
    
    m1 = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 
            9, 20, 3, 40, new int[] {0, 1, 2});
    harness.check(!m1.equals(m2));
    m2 = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 
            9, 20, 3, 40, new int[] {0, 1, 2});
    harness.check(m1.equals(m2));
    
    m1 = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 
            9, 19, 3, 40, new int[] {0, 1, 2});
    harness.check(!m1.equals(m2));
    m2 = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 
            9, 19, 3, 40, new int[] {0, 1, 2});
    harness.check(m1.equals(m2));
    
    m1 = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 
            9, 19, 4, 40, new int[] {0, 1, 2});
    harness.check(!m1.equals(m2));
    m2 = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 
            9, 19, 4, 40, new int[] {0, 1, 2});
    harness.check(m1.equals(m2));


    m1 = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 
            9, 19, 4, 40, new int[] {0, 2, 1});
    harness.check(!m1.equals(m2));
    m2 = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 
            9, 19, 4, 40, new int[] {0, 2, 1});
    harness.check(m1.equals(m2));
  }

View Full Code Here

  
  private void test1(TestHarness harness)
  {
    harness.checkPoint("(int, int, int, double, DataBuffer)");  
    DataBuffer db = new DataBufferDouble(12);
    ComponentSampleModel m = new ComponentSampleModel(DataBuffer.TYPE_DOUBLE,
            3, 2, 2, 6, new int[] {0, 1});
    m.setSample(2, 1, 0, 99.9, db);
    harness.check(db.getElem(0, 10), 99.0d);
    m.setSample(2, 1, 1, 88.8, db);
    harness.check(db.getElem(0, 11), 88.0d);
    
    // what happens if the data buffer doesn't hold doubles?
    DataBuffer db2 = new DataBufferInt(12);
    m.setSample(2, 1, 0, 99.9d, db2);
    harness.check(db2.getElem(0, 10), 99);
    m.setSample(2, 1, 1, 88.8d, db2);
    harness.check(db2.getElem(0, 11), 88); 


    // check that a null data buffer generates a NullPointerException
    boolean pass = false;
    try
      {
        m.setSample(2, 1, 1, 77.7d, null);
      }
    catch (NullPointerException e)
      {
        pass = true;
      }

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  private void test2(TestHarness harness)
  {
    harness.checkPoint("(int, int, int, float, DataBuffer)");  


    DataBuffer db = new DataBufferFloat(12);
    ComponentSampleModel m = new ComponentSampleModel(DataBuffer.TYPE_FLOAT,
            3, 2, 2, 6, new int[] {0, 1});
    m.setSample(2, 1, 0, 99.9f, db);
    harness.check(db.getElem(0, 10), 99.0f);
    m.setSample(2, 1, 1, 88.8f, db);
    harness.check(db.getElem(0, 11), 88.0f);
    
    // what happens if the data buffer doesn't hold floats?
    DataBuffer db2 = new DataBufferInt(12);
    m.setSample(2, 1, 0, 99.9f, db2);
    harness.check(db2.getElem(0, 10), 99);
    m.setSample(2, 1, 1, 88.8f, db2);
    harness.check(db2.getElem(0, 11), 88); 
     
    // check that a null data buffer generates a NullPointerException
    boolean pass = false;
    try
      {
        m.setSample(2, 1, 1, 77.7f, null);
      }
    catch (NullPointerException e)
      {
        pass = true;
      }

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  private void test3(TestHarness harness)
  {
    harness.checkPoint("(int, int, int, int, DataBuffer)");  
    
    DataBuffer db = new DataBufferInt(12);
    ComponentSampleModel m = new ComponentSampleModel(DataBuffer.TYPE_INT,
            3, 2, 2, 6, new int[] {0, 1});
    m.setSample(2, 1, 0, 99, db);
    harness.check(db.getElem(0, 10), 99);
    m.setSample(2, 1, 1, 88, db);
    harness.check(db.getElem(0, 11), 88);
    
    // what happens if the data buffer doesn't hold integers?
    DataBuffer db2 = new DataBufferByte(12);
    m.setSample(2, 1, 0, 99, db2);
    harness.check(db2.getElem(0, 10), 99);
    m.setSample(2, 1, 1, 888, db2);
    harness.check(db2.getElem(0, 11), 120);  // (byte) 888
    
    // check that a null data buffer generates a NullPointerException
    boolean pass = false;
    try
      {
        m.setSample(2, 1, 1, 77, null);
      }
    catch (NullPointerException e)
      {
        pass = true;
      }

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  public void test(TestHarness harness)
  {
    DataBuffer db = new DataBufferInt(12);
    for (int i = 0; i < 12; i++)
      db.setElem(i, i);
    ComponentSampleModel m = new ComponentSampleModel(DataBuffer.TYPE_INT,
            3, 2, 2, 6, new int[] {0, 1});
    Object elements = m.getDataElements(0, 0, 2, 1, null, db);
    int[] de = (int[]) elements;
    harness.check(de.length, 4);
    harness.check(de[0], 0);
    harness.check(de[1], 1);
    harness.check(de[2], 2);
    harness.check(de[3], 3);
    
    // try passing in a result array
    int[] result = new int[4];
    de = (int[]) m.getDataElements(0, 0, 2, 1, result, db);
    harness.check(de[0], 0);
    harness.check(de[1], 1);
    harness.check(de[2], 2);
    harness.check(de[3], 3);
    harness.check(de == result);
    
    // try null data buffer
    boolean pass = false;
    try
      {
        m.getDataElements(0, 0, 2, 1, result, null);
      }
    catch (NullPointerException e)
      {
        pass = true;  
      }

View Full Code Here

{
  public void test(TestHarness harness)
  {
    DataBuffer db = new DataBufferInt(12);
    int[] pixel = new int[] {11, 22};
    ComponentSampleModel m = new ComponentSampleModel(DataBuffer.TYPE_INT,
            3, 2, 2, 6, new int[] {0, 1});
    m.setPixel(1, 1, pixel, db);
    harness.check(db.getElem(0, 8), 11);
    harness.check(db.getElem(0, 9), 22);
        
    // check that a null pixel array generates a NullPointerException
    boolean pass = false;
    try
      {
        m.setPixel(1, 1, (int[]) null, db);
      }
    catch (NullPointerException e)
      {
        pass = true;
      }
    harness.check(pass);    


    // check that a null data buffer generates a NullPointerException
    pass = false;
    try
      {
        m.setPixel(1, 1, pixel, null);
      }
    catch (NullPointerException e)
      {
        pass = true;
      }

View Full Code Here

  
  public void testConstructor1(TestHarness harness)
  {
    harness.checkPoint("testConstructor1()");
    
    ComponentSampleModel m = new ComponentSampleModel(DataBuffer.TYPE_BYTE,
            10, 20, 3, 30, new int[] {0, 1, 2});
    harness.check(m.getDataType(), DataBuffer.TYPE_BYTE);
    harness.check(m.getWidth(), 10);
    harness.check(m.getHeight(), 20);
    harness.check(m.getPixelStride(), 3);
    harness.check(m.getScanlineStride(), 30);
    harness.check(Arrays.equals(m.getBandOffsets(), new int[] {0, 1, 2}));
    
    // try bad type
    boolean pass = false;
    try
    {
      m = new ComponentSampleModel(DataBuffer.TYPE_UNDEFINED, 10, 20, 3, 30, 
              new int[] {0, 1, 2});
    }
    catch (IllegalArgumentException e)
    {
      pass = true;
    }
    harness.check(pass);
    
    // try zero width
    pass = false;
    try
    {
      m = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 0, 20, 3, 30, 
              new int[] {0, 1, 2});
    }
    catch (IllegalArgumentException e)
    {
      pass = true;
    }
    harness.check(pass);


    // try zero height
    pass = false;
    try
    {
      m = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 10, 0, 3, 30, 
              new int[] {0, 1, 2});
    }
    catch (IllegalArgumentException e)
    {
      pass = true;
    }
    harness.check(pass);
    
    // try negative pixel stride
    pass = false;
    try
    {
      m = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 10, 20, -1, 30, 
              new int[] {0, 1, 2});
    }
    catch (IllegalArgumentException e)
    {
      pass = true;
    }
    harness.check(pass);


    // try negative scanline stride
    pass = false;
    try
    {
      m = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 10, 20, 3, -1, 
              new int[] {0, 1, 2});
    }
    catch (IllegalArgumentException e)
    {
      pass = true;
    }
    harness.check(pass);
    
    // try width * height > Integer.MAX_VALUE
    pass = false;
    try
    {
      m = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 3, 
              Integer.MAX_VALUE / 2, 3, 30, new int[] {0, 1, 2});
    }
    catch (IllegalArgumentException e)
    {
      pass = true;
    }
    harness.check(pass);
    
    // try null band offsets
    pass = false;
    try
    {
      m = new ComponentSampleModel(DataBuffer.TYPE_BYTE, 10, 20, 3, 30, null);
    }
    catch (NullPointerException e)
    {
      pass = true;
    }

View Full Code Here

    harness.checkPoint("(int, int, int, int, int, int[], int[])");


    int[] bankIndices = new int[] {0, 1};
    int[] bandOffsets = new int[] {0, 0};
    
    ComponentSampleModel m = new ComponentSampleModel(DataBuffer.TYPE_INT, 22, 
            11, 1, 25, bankIndices, new int[] {0, 0});
    harness.check(m.getDataType(), DataBuffer.TYPE_INT);
    harness.check(m.getWidth(), 22);
    harness.check(m.getHeight(), 11);
    harness.check(m.getPixelStride(), 1);
    harness.check(m.getNumBands(), 2);
    harness.check(m.getNumDataElements(), 2);
    harness.check(Arrays.equals(m.getBankIndices(), new int[] {0, 1}));
    harness.check(m.getBankIndices() != bankIndices);  // not the same instance
    harness.check(Arrays.equals(m.getBandOffsets(), bandOffsets));
    harness.check(m.getBandOffsets() != bandOffsets);  // not the same instance
    // check unknown data type
    boolean pass = false;
    try
      {
        m = new ComponentSampleModel(DataBuffer.TYPE_UNDEFINED, 22, 
                11, 1, 25, new int[] {0, 1}, new int[] {0, 0});
      }
    catch (IllegalArgumentException e)
      {
        pass = true;  
      }
    harness.check(pass);
    
    // check w = 0
    pass = false;
    try
      {
        m = new ComponentSampleModel(DataBuffer.TYPE_INT, 0, 
            11, 1, 25, new int[] {0, 1}, new int[] {0, 0});
      }
    catch (IllegalArgumentException e)
    {
      pass = true;
    }
    harness.check(pass);
    
    // check h = 0
    pass = false;
    try
      {
        m = new ComponentSampleModel(DataBuffer.TYPE_INT, 22, 
            0, 1, 25, new int[] {0, 1}, new int[] {0, 0});
      }
    catch (IllegalArgumentException e)
    {
      pass = true;
    }
    harness.check(pass);
    
    // check w * h exceeds Integer.MAX_VALUE
    pass = false;
    try
      {
        m = new ComponentSampleModel(DataBuffer.TYPE_INT, Integer.MAX_VALUE - 1, 
            2, 1, 25, new int[] {0, 1}, new int[] {0, 0});
      }
    catch (IllegalArgumentException e)
    {
      pass = true;
    }
    harness.check(pass);
    
    // try pixelStride < 0
    pass = false;
    try
      {
        m = new ComponentSampleModel(DataBuffer.TYPE_INT, 22, 
              11, -1, 25, new int[] {0, 1}, new int[] {0, 0});
      }
    catch (IllegalArgumentException e)
      {
        pass = true;  
      }
    harness.check(pass);
    
    // try scanlineStride = 0
    pass = false;
    try
      {
        m = new ComponentSampleModel(DataBuffer.TYPE_INT, 22, 
                11, 1, -1, new int[] {0, 1}, new int[] {0, 0});
      }
    catch (IllegalArgumentException e)
      {
        pass = true;  
      }
    harness.check(pass);


    // try null bankIndices
    pass = false;
    try
      {
        m = new ComponentSampleModel(DataBuffer.TYPE_INT, 22, 11, 1, 25, null, 
                new int[] {0, 0});
      }
    catch (NullPointerException e)
      {
        pass = true;
      }
    harness.check(pass);
      
    // try empty bankIndices
    pass = false;
    try
      { 
        m = new ComponentSampleModel(DataBuffer.TYPE_INT, 22, 11, 1, 25, 
                new int[0], new int[] {0, 0});
      }
    catch (ArrayIndexOutOfBoundsException e)
      {
        pass = true;
      }
    catch (IllegalArgumentException e)
      {
        pass = true;
      }
    harness.check(pass);
    
    // try null bandOffsets
    pass = false;
    try
      {
        m = new ComponentSampleModel(DataBuffer.TYPE_INT, 22, 11, 1, 25, 
                new int[] {0, 0}, null);
      }
    catch (NullPointerException e)
      {
        pass = true;
      }
    harness.check(pass);
    
    // try arrays of different lengths 
    pass = false;
    try
      {
        m = new ComponentSampleModel(DataBuffer.TYPE_INT, 22, 11, 1, 25, 
                new int[1], new int[2]);
      }
    catch (IllegalArgumentException e)
      {
        pass = true;

View Full Code Here


public class getPixelStride implements Testlet
{
  public void test(TestHarness harness)
  {
    ComponentSampleModel m1 = new ComponentSampleModel(DataBuffer.TYPE_INT, 22, 
        11, 2, 44, new int[] {0, 0});
    harness.check(m1.getPixelStride(), 2);
  }

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