Examples of SampleModel

ae.java.awt.image.SampleModel
This abstract class defines an interface for extracting samples of pixels in an image. All image data is expressed as a collection of pixels. Each pixel consists of a number of samples. A sample is a datum for one band of an image and a band consists of all samples of a particular type in an image. For example, a pixel might contain three samples representing its red, green and blue components. There are three bands in the image containing this pixel. One band consists of all the red samples from all pixels in the image. The second band consists of all the green samples and the remaining band consists of all of the blue samples. The pixel can be stored in various formats. For example, all samples from a particular band can be stored contiguously or all samples from a single pixel can be stored contiguously.
Subclasses of SampleModel specify the types of samples they can represent (e.g. unsigned 8-bit byte, signed 16-bit short, etc.) and may specify how the samples are organized in memory. In the Java 2D(tm) API, built-in image processing operators may not operate on all possible sample types, but generally will work for unsigned integral samples of 16 bits or less. Some operators support a wider variety of sample types.
A collection of pixels is represented as a Raster, which consists of a DataBuffer and a SampleModel. The SampleModel allows access to samples in the DataBuffer and may provide low-level information that a programmer can use to directly manipulate samples and pixels in the DataBuffer.
This class is generally a fall back method for dealing with images. More efficient code will cast the SampleModel to the appropriate subclass and extract the information needed to directly manipulate pixels in the DataBuffer. @see ae.java.awt.image.DataBuffer @see ae.java.awt.image.Raster @see ae.java.awt.image.ComponentSampleModel @see ae.java.awt.image.PixelInterleavedSampleModel @see ae.java.awt.image.BandedSampleModel @see ae.java.awt.image.MultiPixelPackedSampleModel @see ae.java.awt.image.SinglePixelPackedSampleModel
com.google.code.appengine.awt.image.SampleModel
com.jgraph.gaeawt.java.awt.image.SampleModel
com.pcmsolutions.device.EMU.E4.sample.SampleModel
Created by IntelliJ IDEA. User: pmeehan impl_ Date: 24-May-2003 Time: 13:30:15 To change this template use Options | File Templates.
java.awt.image.SampleModel
This abstract class defines an interface for extracting samples of pixels in an image. All image data is expressed as a collection of pixels. Each pixel consists of a number of samples. A sample is a datum for one band of an image and a band consists of all samples of a particular type in an image. For example, a pixel might contain three samples representing its red, green and blue components. There are three bands in the image containing this pixel. One band consists of all the red samples from all pixels in the image. The second band consists of all the green samples and the remaining band consists of all of the blue samples. The pixel can be stored in various formats. For example, all samples from a particular band can be stored contiguously or all samples from a single pixel can be stored contiguously.
Subclasses of SampleModel specify the types of samples they can represent (e.g. unsigned 8-bit byte, signed 16-bit short, etc.) and may specify how the samples are organized in memory. In the Java 2D(tm) API, built-in image processing operators may not operate on all possible sample types, but generally will work for unsigned integral samples of 16 bits or less. Some operators support a wider variety of sample types.
A collection of pixels is represented as a Raster, which consists of a DataBuffer and a SampleModel. The SampleModel allows access to samples in the DataBuffer and may provide low-level information that a programmer can use to directly manipulate samples and pixels in the DataBuffer.
This class is generally a fall back method for dealing with images. More efficient code will cast the SampleModel to the appropriate subclass and extract the information needed to directly manipulate pixels in the DataBuffer. @see java.awt.image.DataBuffer @see java.awt.image.Raster @see java.awt.image.ComponentSampleModel @see java.awt.image.PixelInterleavedSampleModel @see java.awt.image.BandedSampleModel @see java.awt.image.MultiPixelPackedSampleModel @see java.awt.image.SinglePixelPackedSampleModel
siena.base.test.model.SampleModel

Examples of java.awt.image.SampleModel

  int bitsPerPixel = 24;
  boolean isPalette = false;
  int paletteEntries = 0;
  IndexColorModel icm = null;
 
  SampleModel sm = im.getSampleModel();
  int numBands = sm.getNumBands();


  ColorModel cm = im.getColorModel();


  if (numBands != 1 && numBands != 3) {
      throw new 
    IllegalArgumentException(JaiI18N.getString("BMPImageEncoder1"));
  }
  
  int sampleSize[] = sm.getSampleSize();
  if (sampleSize[0] > 8) {
      throw new RuntimeException(JaiI18N.getString("BMPImageEncoder2"));
  }


  for (int i=1; i<sampleSize.length; i++) {
      if (sampleSize[i] != sampleSize[0]) {
    throw 
        new RuntimeException(JaiI18N.getString("BMPImageEncoder3"));
      }
  }


  // Float and Double data cannot be written in a BMP format.
  int dataType = sm.getTransferType();
        if (dataType != DataBuffer.TYPE_BYTE &&
            !CodecUtils.isPackedByteImage(im)) {
            throw new RuntimeException(JaiI18N.getString("BMPImageEncoder0"));
        }


  // Number of bytes that a scanline for the image written out will have.
  int destScanlineBytes = w * numBands;
  int compression = 0;




  byte r[] = null, g[] = null, b[] = null, a[] = null;


  if (cm instanceof IndexColorModel) {


      isPalette = true;
      icm = (IndexColorModel)cm;
      paletteEntries = icm.getMapSize();


      if (paletteEntries <= 2) {


    bitsPerPixel = 1;
    destScanlineBytes = (int)Math.ceil((double)w/8.0);


      } else if (paletteEntries <= 16) {


    bitsPerPixel = 4;
    destScanlineBytes = (int)Math.ceil((double)w/2.0);


      } else if (paletteEntries <= 256) {


    bitsPerPixel = 8;


      } else {


    // Cannot be written as a Palette image. So write out as 
    // 24 bit image.
    bitsPerPixel = 24;
    isPalette = false;
    paletteEntries = 0;
    destScanlineBytes = w * 3;
      }


      if (isPalette == true) {


    r = new byte[paletteEntries];
    g = new byte[paletteEntries];
    b = new byte[paletteEntries];
    a = new byte[paletteEntries];
    
    icm.getAlphas(a);
    icm.getReds(r);
    icm.getGreens(g);
    icm.getBlues(b);
      }


  } else {
      
      // Grey scale images
      if (numBands == 1) {
    
    isPalette = true;
    paletteEntries = 256;
    //    int sampleSize[] = sm.getSampleSize();
    bitsPerPixel = sampleSize[0];
    
    destScanlineBytes = (int)Math.ceil((double)(w * bitsPerPixel) /
               8.0);


    r = new byte[256];
    g = new byte[256];
    b = new byte[256];
    a = new byte[256];
    
    for (int i = 0; i < 256; i++) {
        r[i] = (byte)i;
        g[i] = (byte)i;
        b[i] = (byte)i;
        //Fix 4672486: BMPEncoder writes wrong alpha lut into 
        // stream for gray-scale image
        a[i] = (byte)255;
    }
      } else if (sm instanceof SinglePixelPackedSampleModel) {
    bitsPerPixel = DataBuffer.getDataTypeSize(sm.getDataType());
    destScanlineBytes = w * bitsPerPixel + 7 >> 3;
      }
  }


  // actual writing of image data
  int fileSize = 0;
  int offset = 0;
  int headerSize = 0;
  int imageSize = 0;
  int xPelsPerMeter = 0;
  int yPelsPerMeter = 0;
  int colorsUsed = 0;
  int colorsImportant = paletteEntries;
  int padding = 0;


  // Calculate padding for each scanline
  int remainder = destScanlineBytes % 4;
  if (remainder != 0) {
      padding = 4 - remainder;
  }
  
  switch (version) {      
  case BMPEncodeParam.VERSION_2:
      offset = 26 + paletteEntries * 3;
      headerSize = 12;
      imageSize = (destScanlineBytes + padding) * h;
      fileSize = imageSize + offset;
      throw new 
    RuntimeException(JaiI18N.getString("BMPImageEncoder5"));
      //break;
      
  case BMPEncodeParam.VERSION_3:
      // FileHeader is 14 bytes, BitmapHeader is 40 bytes, 
      // add palette size and that is where the data will begin
      if (isCompressed &&  bitsPerPixel == 8) {
    compression = 1;
      } else if (isCompressed && bitsPerPixel == 4) {
    compression = 2;
      }
      offset = 54 + paletteEntries * 4;


      imageSize = (destScanlineBytes + padding) * h;
      fileSize = imageSize + offset;
      headerSize = 40;
      break;
    
  case BMPEncodeParam.VERSION_4:
      headerSize = 108;
      throw new
    RuntimeException(JaiI18N.getString("BMPImageEncoder5"));
      // break;
  }


  int redMask = 0, blueMask = 0, greenMask = 0;
  if (cm instanceof DirectColorModel) {
      redMask = ((DirectColorModel)cm).getRedMask();
      greenMask = ((DirectColorModel)cm).getGreenMask();
      blueMask = ((DirectColorModel)cm).getBlueMask();
      destScanlineBytes = w;
      compression = 3;
      fileSize += 12;
      offset += 12;
  }


  writeFileHeader(fileSize, offset);
  
  writeInfoHeader(headerSize, bitsPerPixel);


  // compression
  writeDWord(compression);
  
  // imageSize
  writeDWord(imageSize);


  // xPelsPerMeter
  writeDWord(xPelsPerMeter);
  
  // yPelsPerMeter
  writeDWord(yPelsPerMeter);
  
  // Colors Used
  writeDWord(colorsUsed);
  
  // Colors Important
  writeDWord(colorsImportant);


  if (compression == 3) {
      writeDWord(redMask);
      writeDWord(greenMask);
      writeDWord(blueMask);
  }


  if (compression == 3) {
            for (int i = 0; i < h; i++) {
                int row = minY + i;


                if (!isTopDown)
                    row = minY + h - i -1;


                // Get the pixels
                Rectangle srcRect =
                    new Rectangle(minX, row, w, 1);
                Raster src = im.getData(srcRect);


                SampleModel sm1 = src.getSampleModel();
                int pos = 0;
                int startX = srcRect.x - src.getSampleModelTranslateX();
                int startY = srcRect.y - src.getSampleModelTranslateY();
                if (sm1 instanceof SinglePixelPackedSampleModel) {
                    SinglePixelPackedSampleModel sppsm =

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Examples of java.awt.image.SampleModel

        return Object.class;
    }


    public boolean canEncodeImage(RenderedImage im,
                                  ImageEncodeParam param) {
        SampleModel sampleModel = im.getSampleModel();


        int dataType = sampleModel.getTransferType();
        if ((dataType == DataBuffer.TYPE_FLOAT) ||
            (dataType == DataBuffer.TYPE_DOUBLE)) {
            return false;
        }


        int numBands = sampleModel.getNumBands();
        if (numBands != 1 && numBands != 3) {
            return false;
        }


        return true;

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Examples of java.awt.image.SampleModel

        int minY = im.getMinY();
        int width = im.getWidth();
        int height = im.getHeight();


        // Get SampleModel.
        SampleModel sampleModel = im.getSampleModel();


        // Retrieve and verify sample size.
  int sampleSize[] = sampleModel.getSampleSize();
        for(int i = 1; i < sampleSize.length; i++) {
            if(sampleSize[i] != sampleSize[0]) {
                throw new RuntimeException(JaiI18N.getString("TIFFImageEncoder0"));
            }
        }


        // Check low bit limits.
  int numBands = sampleModel.getNumBands();
        if((sampleSize[0] == 1 || sampleSize[0] == 4) && numBands != 1) {
            throw new RuntimeException(JaiI18N.getString("TIFFImageEncoder1"));
        }


        // Retrieve and verify data type.
  int dataType = sampleModel.getDataType();
        switch(dataType) {
        case DataBuffer.TYPE_BYTE:
            if(sampleSize[0] != 1 && sampleSize[0] != 4 &&
               sampleSize[0] != 8) {
                throw new RuntimeException(JaiI18N.getString("TIFFImageEncoder2"));

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Examples of java.awt.image.SampleModel

                endX = XToTileX(xsect.x + xsect.width - 1);
                endY = YToTileY(xsect.y + xsect.height - 1);
            }


            // Create a WritableRaster of the desired size
            SampleModel sm =
                sampleModel.createCompatibleSampleModel(bounds.width,
                                                        bounds.height);


            // Translate it
            WritableRaster dest =

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Examples of java.awt.image.SampleModel

        Rectangle bounds;
        if (dest == null) {
            // Create a WritableRaster for the entire image.
            bounds = imageBounds;
            Point p = new Point(minX, minY);
            SampleModel sm =
                sampleModel.createCompatibleSampleModel(width, height);
            dest = RasterFactory.createWritableRaster(sm, p);
        } else {
            bounds = dest.getBounds();
        }

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Examples of siena.base.test.model.SampleModel

    assertEquals(disc, res.get(0));
  }
  
  
  public void testInsert() {
    SampleModel mod = new SampleModel();
    mod.clazz = String.class;
    mod.foobar = "FOOBAR";
    mod.publicField = "PUBLIC_FIELD";
    mod.setPrivateField("PRIVATE_FIELD");
    mod.type = SampleModel.Type.FOO;
    
    mod.insert();
    
    List<SampleModel> res = SampleModel.all().fetch();
    for(SampleModel m: res){
      assertEquals(mod, m);
    }

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