Java RenderedImage.getData方法代码示例

import java.awt.image.RenderedImage; //导入方法依赖的package包/类
@Override
public void write(IIOMetadata streamMetadata, IIOImage image, ImageWriteParam param) throws IOException {
  RenderedImage img = image.getRenderedImage();
  if (stream == null) {
    throw new IOException("Set an output first!");
  }
  if (param == null) {
    param = getDefaultWriteParam();
  }
  Rectangle sourceRegion = new Rectangle(0, 0, img.getWidth(), img.getHeight());
  if (param.getSourceRegion() != null) {
    sourceRegion = sourceRegion.intersection(param.getSourceRegion());
  }
  Raster raster = img.getData(sourceRegion);
  int quality = 85;
  if (param.getCompressionMode() == ImageWriteParam.MODE_EXPLICIT) {
    quality = (int) (param.getCompressionQuality() * 100);
  }
  try {
    stream.write(lib.encode(raster, quality).array());
  } catch (TurboJpegException e) {
    throw new IOException(e);
  }
}
 

import java.awt.image.RenderedImage; //导入方法依赖的package包/类
private void writeRows(RenderedImage image, LZWCompressor compressor,
                       int sx, int sdx, int sy, int sdy, int sw,
                       int dy, int ddy, int dw, int dh,
                       int numRowsWritten, int progressReportRowPeriod)
  throws IOException {
    if (DEBUG) System.out.println("Writing unoptimized");

    int[] sbuf = new int[sw];
    byte[] dbuf = new byte[dw];

    Raster raster =
        image.getNumXTiles() == 1 && image.getNumYTiles() == 1 ?
        image.getTile(0, 0) : image.getData();
    for (int y = dy; y < dh; y += ddy) {
        if (numRowsWritten % progressReportRowPeriod == 0) {
            if (abortRequested()) {
                processWriteAborted();
                return;
            }
            processImageProgress((numRowsWritten*100.0F)/dh);
        }

        raster.getSamples(sx, sy, sw, 1, 0, sbuf);
        for (int i = 0, j = 0; i < dw; i++, j += sdx) {
            dbuf[i] = (byte)sbuf[j];
        }
        compressor.compress(dbuf, 0, dw);
        numRowsWritten++;
        sy += sdy;
    }
}
 

import java.awt.image.RenderedImage; //导入方法依赖的package包/类
protected PaletteBuilder(RenderedImage src, int size) {
    this.src = src;
    this.srcColorModel = src.getColorModel();
    this.srcRaster = src.getData();

    this.transparency =
        srcColorModel.getTransparency();

    this.requiredSize = size;
}
 

import java.awt.image.RenderedImage; //导入方法依赖的package包/类
private void writeRows(RenderedImage image, LZWCompressor compressor,
                       int sx, int sdx, int sy, int sdy, int sw,
                       int dy, int ddy, int dw, int dh,
                       int numRowsWritten, int progressReportRowPeriod)
  throws IOException {
    if (DEBUG) System.out.println("Writing unoptimized");

    int[] sbuf = new int[sw];
    byte[] dbuf = new byte[dw];

    Raster raster =
        image.getNumXTiles() == 1 && image.getNumYTiles() == 1 ?
        image.getTile(0, 0) : image.getData();
    for (int y = dy; y < dh; y += ddy) {
        if (numRowsWritten % progressReportRowPeriod == 0) {
            processImageProgress((numRowsWritten*100.0F)/dh);
            if (abortRequested()) {
                processWriteAborted();
                return;
            }
        }

        raster.getSamples(sx, sy, sw, 1, 0, sbuf);
        for (int i = 0, j = 0; i < dw; i++, j += sdx) {
            dbuf[i] = (byte)sbuf[j];
        }
        compressor.compress(dbuf, 0, dw);
        numRowsWritten++;
        sy += sdy;
    }
}
 

import java.awt.image.RenderedImage; //导入方法依赖的package包/类
@Override
public void write(IIOMetadata streamMetadata, IIOImage image, ImageWriteParam param) throws IOException {
  RenderedImage img = image.getRenderedImage();
  if (param == null) {
    param = getDefaultWriteParam();
  }
  Rectangle sourceRegion = new Rectangle(0, 0, img.getWidth(), img.getHeight());
  if (param.getSourceRegion() != null) {
    sourceRegion = sourceRegion.intersection(param.getSourceRegion());
  }
  Raster raster = img.getData(sourceRegion);
  opj_cparameters cparams = ((OpenJp2ImageWriteParam) param).toNativeParams(lib);
  lib.encode(raster, this.wrapper, cparams);
}
 

import java.awt.image.RenderedImage; //导入方法依赖的package包/类
/**
 * The runnable method for this class. This will produce an image using
 * the current RenderableImage and RenderContext and send it to all the
 * ImageConsumer currently registered with this class.
 */
public void run() {
    // First get the rendered image
    RenderedImage rdrdImage;
    if (rc != null) {
        rdrdImage = rdblImage.createRendering(rc);
    } else {
        rdrdImage = rdblImage.createDefaultRendering();
    }

    // And its ColorModel
    ColorModel colorModel = rdrdImage.getColorModel();
    Raster raster = rdrdImage.getData();
    SampleModel sampleModel = raster.getSampleModel();
    DataBuffer dataBuffer = raster.getDataBuffer();

    if (colorModel == null) {
        colorModel = ColorModel.getRGBdefault();
    }
    int minX = raster.getMinX();
    int minY = raster.getMinY();
    int width = raster.getWidth();
    int height = raster.getHeight();

    Enumeration<ImageConsumer> icList;
    ImageConsumer ic;
    // Set up the ImageConsumers
    icList = ics.elements();
    while (icList.hasMoreElements()) {
        ic = icList.nextElement();
        ic.setDimensions(width,height);
        ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT |
                    ImageConsumer.COMPLETESCANLINES |
                    ImageConsumer.SINGLEPASS |
                    ImageConsumer.SINGLEFRAME);
    }

    // Get RGB pixels from the raster scanline by scanline and
    // send to consumers.
    int pix[] = new int[width];
    int i,j;
    int numBands = sampleModel.getNumBands();
    int tmpPixel[] = new int[numBands];
    for (j = 0; j < height; j++) {
        for(i = 0; i < width; i++) {
            sampleModel.getPixel(i, j, tmpPixel, dataBuffer);
            pix[i] = colorModel.getDataElement(tmpPixel, 0);
        }
        // Now send the scanline to the Consumers
        icList = ics.elements();
        while (icList.hasMoreElements()) {
            ic = icList.nextElement();
            ic.setPixels(0, j, width, 1, colorModel, pix, 0, width);
        }
    }

    // Now tell the consumers we're done.
    icList = ics.elements();
    while (icList.hasMoreElements()) {
        ic = icList.nextElement();
        ic.imageComplete(ImageConsumer.STATICIMAGEDONE);
    }
}
 

import java.awt.image.RenderedImage; //导入方法依赖的package包/类
public static double[] readSLCRasterBand(int x, int y, int width, int height) throws IOException {
	
	final double[] srcArray;
	
	final ImageReader reader = ImageIO.getImageReadersByFormatName("tiff").next();
	ImageInputStream iis = ImageIO.createImageInputStream(file);
	reader.setInput(iis);
	
	final ImageReadParam param = reader.getDefaultReadParam();
	param.setSourceSubsampling(width,height,0,0);

	final RenderedImage image = reader.readAsRenderedImage(0,param);
	
	
	final Raster data = image.getData(new Rectangle(0,0, width, height));

	final SampleModel sampleModel = data.getSampleModel();

	srcArray = new double[width * height];
	double[] samples = sampleModel.getSamples(0, 0, width, height, 0, srcArray,data.getDataBuffer());
	
	/*if (oneOfTwo)
		copyLine1Of2(srcArray, (short[]) destBuffer.getElems(), sourceStepX);
	else
		copyLine2Of2(srcArray, (short[]) destBuffer.getElems(), sourceStepX);*/
	
	return samples;
}