Java ComponentSampleModel.getNumBands方法代码示例

import java.awt.image.ComponentSampleModel; //导入方法依赖的package包/类
public static LCMSImageLayout createImageLayout(Raster r) {
    LCMSImageLayout l = new LCMSImageLayout();
    if (r instanceof ByteComponentRaster &&
            r.getSampleModel() instanceof ComponentSampleModel) {
        ByteComponentRaster br = (ByteComponentRaster)r;

        ComponentSampleModel csm = (ComponentSampleModel)r.getSampleModel();

        l.pixelType = CHANNELS_SH(br.getNumBands()) | BYTES_SH(1);

        int[] bandOffsets = csm.getBandOffsets();
        BandOrder order = BandOrder.getBandOrder(bandOffsets);

        int firstBand = 0;
        switch (order) {
            case INVERTED:
                l.pixelType |= DOSWAP;
                firstBand  = csm.getNumBands() - 1;
                break;
            case DIRECT:
                // do nothing
                break;
            default:
                // unable to create the image layout;
                return null;
        }

        l.nextRowOffset = br.getScanlineStride();
        l.nextPixelOffset = br.getPixelStride();

        l.offset = br.getDataOffset(firstBand);
        l.dataArray = br.getDataStorage();
        l.dataType = DT_BYTE;

        l.width = br.getWidth();
        l.height = br.getHeight();

        if (l.nextRowOffset == l.width * br.getPixelStride()) {
            l.imageAtOnce = true;
        }
        return l;
    }
    return null;
}
 

import java.awt.image.ComponentSampleModel; //导入方法依赖的package包/类
/**
 * Returns whether the image has contiguous data across rows.
 */
public static final boolean imageIsContiguous(RenderedImage image) {
    SampleModel sm;
    if(image instanceof BufferedImage) {
        WritableRaster ras = ((BufferedImage)image).getRaster();
        sm = ras.getSampleModel();
    } else {
        sm = image.getSampleModel();
    }

    if (sm instanceof ComponentSampleModel) {
        // Ensure image rows samples are stored contiguously
        // in a single bank.
        ComponentSampleModel csm = (ComponentSampleModel)sm;

        if (csm.getPixelStride() != csm.getNumBands()) {
            return false;
        }

        int[] bandOffsets = csm.getBandOffsets();
        for (int i = 0; i < bandOffsets.length; i++) {
            if (bandOffsets[i] != i) {
                return false;
            }
        }

        int[] bankIndices = csm.getBankIndices();
        for (int i = 0; i < bandOffsets.length; i++) {
            if (bankIndices[i] != 0) {
                return false;
            }
        }

        return true;
    }

    // Otherwise true if and only if it's a bilevel image with
    // a MultiPixelPackedSampleModel, 1 bit per pixel, and 1 bit
    // pixel stride.
    return ImageUtil.isBinary(sm);
}
 

import java.awt.image.ComponentSampleModel; //导入方法依赖的package包/类
public WritableRaster filter(Raster src, WritableRaster dest)
{
  if (dest == null)
    dest = createCompatibleDestRaster(src);

  DataBuffer  srcDB =  src.getDataBuffer();
  DataBuffer destDB = dest.getDataBuffer();

  ComponentSampleModel  srcSM = (ComponentSampleModel)  src.getSampleModel();
  ComponentSampleModel destSM = (ComponentSampleModel) dest.getSampleModel();


  // Calculate offset to data in the underlying arrays:

  int  srcScanlineStride =  srcSM.getScanlineStride();
  int destScanlineStride = destSM.getScanlineStride();
  int srcX  =  src.getMinX() -  src.getSampleModelTranslateX();
  int srcY  =  src.getMinY() -  src.getSampleModelTranslateY();
  int destX = dest.getMinX() - dest.getSampleModelTranslateX();
  int destY = dest.getMinY() - dest.getSampleModelTranslateY();

  int numBands = srcSM.getNumBands();

  /* We can't use getOffset(x, y) from the sample model since we
     don't want the band offset added in. */

  int srcOffset =
    numBands*srcX + srcScanlineStride*srcY +    // from sample model
    srcDB.getOffset();                          // from data buffer

  int destOffset =
    numBands*destX + destScanlineStride*destY + // from sample model
    destDB.getOffset();                         // from data buffer

  // Determine how much, and how many times to blit.

  int rowSize = src.getWidth()*numBands;
  int h = src.getHeight();

  if ((rowSize == srcScanlineStride) &&
      (rowSize == destScanlineStride))
    {
      // collapse scan line blits to one large blit.
      rowSize *= h;
      h = 1;
    }


  // Do blitting

  Object srcArray  = Buffers.getData(srcDB);
  Object destArray = Buffers.getData(destDB);

  for (int yd = 0; yd<h; yd++)
    {
      System.arraycopy(srcArray, srcOffset,
                       destArray, destOffset,
                       rowSize);
      srcOffset  +=  srcScanlineStride;
      destOffset += destScanlineStride;
    }


  return dest;
}
 

import java.awt.image.ComponentSampleModel; //导入方法依赖的package包/类
public WritableRaster filter(Raster src, WritableRaster dest)
 {
   if (dest == null)
     dest = createCompatibleDestRaster(src);
   
   DataBuffer  srcDB =  src.getDataBuffer();
   DataBuffer destDB = dest.getDataBuffer();
   
   ComponentSampleModel  srcSM = (ComponentSampleModel)  src.getSampleModel();
   ComponentSampleModel destSM = (ComponentSampleModel) dest.getSampleModel();

   
   // Calculate offset to data in the underlying arrays:

   int  srcScanlineStride =  srcSM.getScanlineStride();
   int destScanlineStride = destSM.getScanlineStride();
   int srcX  =  src.getMinX() -  src.getSampleModelTranslateX();
   int srcY  =  src.getMinY() -  src.getSampleModelTranslateY();
   int destX = dest.getMinX() - dest.getSampleModelTranslateX();
   int destY = dest.getMinY() - dest.getSampleModelTranslateY();

   int numBands = srcSM.getNumBands();

   /* We can't use getOffset(x, y) from the sample model since we
      don't want the band offset added in. */

   int srcOffset = 
     numBands*srcX + srcScanlineStride*srcY +    // from sample model
     srcDB.getOffset();                          // from data buffer

   int destOffset =
     numBands*destX + destScanlineStride*destY + // from sample model
     destDB.getOffset();                         // from data buffer

   // Determine how much, and how many times to blit.
   
   int rowSize = src.getWidth()*numBands;
   int h = src.getHeight();
   
   if ((rowSize == srcScanlineStride) &&
(rowSize == destScanlineStride))
     {
// collapse scan line blits to one large blit.
rowSize *= h;
h = 1;
     }


   // Do blitting
   
   Object srcArray  = Buffers.getData(srcDB);
   Object destArray = Buffers.getData(destDB);
   
   for (int yd = 0; yd<h; yd++)
     {
System.arraycopy(srcArray, srcOffset, 
		 destArray, destOffset,
		 rowSize);
srcOffset  +=  srcScanlineStride;
destOffset += destScanlineStride;
     }
   

   return dest;
 }
 

import java.awt.image.ComponentSampleModel; //导入方法依赖的package包/类
public static LCMSImageLayout createImageLayout(Raster r) {
    LCMSImageLayout l = new LCMSImageLayout();
    if (r instanceof ByteComponentRaster) {
        ByteComponentRaster br = (ByteComponentRaster)r;

        ComponentSampleModel csm = (ComponentSampleModel)r.getSampleModel();

        l.pixelType = CHANNELS_SH(br.getNumBands()) | BYTES_SH(1);

        int[] bandOffsets = csm.getBandOffsets();
        BandOrder order = BandOrder.getBandOrder(bandOffsets);

        int firstBand = 0;
        switch (order) {
            case INVERTED:
                l.pixelType |= DOSWAP;
                firstBand  = csm.getNumBands() - 1;
                break;
            case DIRECT:
                // do nothing
                break;
            default:
                // unable to create the image layout;
                return null;
        }

        l.nextRowOffset = br.getScanlineStride();
        l.nextPixelOffset = br.getPixelStride();

        l.offset = br.getDataOffset(firstBand);
        l.dataArray = br.getDataStorage();
        l.dataType = DT_BYTE;

        l.width = br.getWidth();
        l.height = br.getHeight();

        if (l.nextRowOffset == l.width * br.getPixelStride()) {
            l.imageAtOnce = true;
        }
        return l;
    }
    return null;
}
 

import java.awt.image.ComponentSampleModel; //导入方法依赖的package包/类
/**
 * Returns whether the image has contiguous data across rows.
 */
public static final boolean imageIsContiguous(RenderedImage image) {
    SampleModel sm;
    if(image instanceof BufferedImage) {
        WritableRaster ras = ((BufferedImage)image).getRaster();
        sm = ras.getSampleModel();
    } else {
        sm = image.getSampleModel();
    }
    
    if (sm instanceof ComponentSampleModel) {
        // Ensure image rows samples are stored contiguously
        // in a single bank.
        ComponentSampleModel csm = (ComponentSampleModel)sm;

        if (csm.getPixelStride() != csm.getNumBands()) {
            return false;
        }

        int[] bandOffsets = csm.getBandOffsets();
        for (int i = 0; i < bandOffsets.length; i++) {
            if (bandOffsets[i] != i) {
                return false;
            }
        }

        int[] bankIndices = csm.getBankIndices();
        for (int i = 0; i < bandOffsets.length; i++) {
            if (bankIndices[i] != 0) {
                return false;
            }
        }

        return true;
    }

    // Otherwise true if and only if it's a bilevel image with
    // a MultiPixelPackedSampleModel, 1 bit per pixel, and 1 bit
    // pixel stride.
    return ImageUtil.isBinary(sm);
}