java.awt.image.BufferedImage.getRaster()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中java.awt.image.BufferedImage.getRaster()方法的一些代码示例，展示了BufferedImage.getRaster()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。BufferedImage.getRaster()方法的具体详情如下：
包路径：java.awt.image.BufferedImage
类名称：BufferedImage
方法名：getRaster

BufferedImage.getRaster介绍

暂无

代码示例

代码示例来源：origin: libgdx/libgdx

public Rect (BufferedImage source, int left, int top, int newWidth, int newHeight, boolean isPatch) {
  image = new BufferedImage(source.getColorModel(),
    source.getRaster().createWritableChild(left, top, newWidth, newHeight, 0, 0, null),
    source.getColorModel().isAlphaPremultiplied(), null);
  offsetX = left;
  offsetY = top;
  regionWidth = newWidth;
  regionHeight = newHeight;
  originalWidth = source.getWidth();
  originalHeight = source.getHeight();
  width = newWidth;
  height = newHeight;
  this.isPatch = isPatch;
}

代码示例来源：origin: stackoverflow.com

public byte[] extractBytes (String ImageName) throws IOException {
 // open image
 File imgPath = new File(ImageName);
 BufferedImage bufferedImage = ImageIO.read(imgPath);

 // get DataBufferBytes from Raster
 WritableRaster raster = bufferedImage .getRaster();
 DataBufferByte data   = (DataBufferByte) raster.getDataBuffer();

 return ( data.getData() );
}

代码示例来源：origin: stackoverflow.com

private static void copySrcIntoDstAt(final BufferedImage src,
    final BufferedImage dst, final int dx, final int dy) {
  int[] srcbuf = ((DataBufferInt) src.getRaster().getDataBuffer()).getData();
  int[] dstbuf = ((DataBufferInt) dst.getRaster().getDataBuffer()).getData();
  int width = src.getWidth();
  int height = src.getHeight();
  int dstoffs = dx + dy * dst.getWidth();
  int srcoffs = 0;
  for (int y = 0 ; y < height ; y++ , dstoffs+= dst.getWidth(), srcoffs += width ) {
    System.arraycopy(srcbuf, srcoffs , dstbuf, dstoffs, width);
  }
}

代码示例来源：origin: wuyouzhuguli/FEBS-Shiro

private void getImagePixels() {
  int w = image.getWidth();
  int h = image.getHeight();
  int type = image.getType();
  if ((w != width) || (h != height) || (type != BufferedImage.TYPE_3BYTE_BGR)) {
    BufferedImage temp = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
    Graphics2D g = temp.createGraphics();
    g.drawImage(image, 0, 0, null);
    image = temp;
  }
  pixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
}

代码示例来源：origin: plantuml/plantuml

private static BufferedImage deepCopy(BufferedImage bi) {
    final ColorModel cm = bi.getColorModel();
    final boolean isAlphaPremultiplied = cm.isAlphaPremultiplied();
    final WritableRaster raster = bi.copyData(bi.getRaster().createCompatibleWritableRaster());
    return new BufferedImage(cm, raster, isAlphaPremultiplied, null);
  }
}

代码示例来源：origin: jMonkeyEngine/jmonkeyengine

public static final ByteBuffer getImageDataFromImage(BufferedImage bufferedImage) {
  WritableRaster wr;
  DataBuffer db;
  BufferedImage bi = new BufferedImage(128, 64, BufferedImage.TYPE_INT_ARGB);
  Graphics2D g = bi.createGraphics();
  g.drawImage(bufferedImage, null, null);
  bufferedImage = bi;
  wr = bi.getRaster();
  db = wr.getDataBuffer();
  DataBufferInt dbi = (DataBufferInt) db;
  int[] data = dbi.getData();
  ByteBuffer byteBuffer = ByteBuffer.allocateDirect(data.length * 4);
  byteBuffer.order(ByteOrder.LITTLE_ENDIAN);
  byteBuffer.asIntBuffer().put(data);
  byteBuffer.flip();
  return byteBuffer;
}

代码示例来源：origin: sarxos/webcam-capture

/**
 * Based on answer: https://stackoverflow.com/a/12062505/7030976
 *
 * @param bgr - byte array in bgr format
 * @return new image
 */
private BufferedImage buildImage(byte[] bgr) {
  BufferedImage image = new BufferedImage(resolution.width, resolution.height, BufferedImage.TYPE_3BYTE_BGR);
  byte[] imageData = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
  System.arraycopy(bgr, 0, imageData, 0, bgr.length);
  return image;
}

代码示例来源：origin: MovingBlocks/Terasology

@Override
public void render(BufferedImage img, Region region) {
  FloraFacet treeFacet = region.getFacet(FloraFacet.class);
  Graphics2D g = img.createGraphics();
  int width = img.getWidth();
  ColorModel colorModel = img.getColorModel();
  ColorBlender blender = ColorBlenders.forColorModel(ColorModels.RGBA, colorModel);
  DataBufferInt dataBuffer = (DataBufferInt) img.getRaster().getDataBuffer();
  for (Entry<BaseVector3i, FloraType> entry : treeFacet.getRelativeEntries().entrySet()) {
    FloraType treeGen = entry.getValue();
    int wx = entry.getKey().getX();
    int wz = entry.getKey().getZ();
    Color color = colorFunc.apply(treeGen);
    int src = color.rgba();
    int dst = dataBuffer.getElem(wz * width + wx);
    int mix = blender.blend(src, dst);
    dataBuffer.setElem(wz * width + wx, mix);
  }
  g.dispose();
}

代码示例来源：origin: jMonkeyEngine/jmonkeyengine

public static void convertScreenShot2(IntBuffer bgraBuf, BufferedImage out){
    WritableRaster wr = out.getRaster();
    DataBufferInt db = (DataBufferInt) wr.getDataBuffer();
    
    int[] cpuArray = db.getData();
    
    bgraBuf.clear();
    bgraBuf.get(cpuArray);
    
//        int width  = wr.getWidth();
//        int height = wr.getHeight();
//
//        // flip the components the way AWT likes them
//        for (int y = 0; y < height / 2; y++){
//            for (int x = 0; x < width; x++){
//                int inPtr  = (y * width + x);
//                int outPtr = ((height-y-1) * width + x);
//                int pixel = cpuArray[inPtr];
//                cpuArray[inPtr] = cpuArray[outPtr];
//                cpuArray[outPtr] = pixel;
//            }
//        }
  }

代码示例来源：origin: haraldk/TwelveMonkeys

Raster raster = image instanceof BufferedImage ? ((BufferedImage) image).getRaster() : image.getData();
DataBuffer buf = raster.getDataBuffer();
if (buf instanceof DataBufferByte) {
  writePICTData(
      0, 0, image.getWidth(), image.getHeight(),
      image.getColorModel(), ((DataBufferByte) buf).getData(),
      0, image.getWidth()
  );

代码示例来源：origin: plantuml/plantuml

/**
 * Extracts image pixels into byte array "pixels"
 */
protected void getImagePixels() {
  int w = image.getWidth();
  int h = image.getHeight();
  int type = image.getType();
  if ((w != width) || (h != height) || (type != BufferedImage.TYPE_3BYTE_BGR)) {
    // create new image with right size/format
    BufferedImage temp = new BufferedImage(width, height, BufferedImage.TYPE_3BYTE_BGR);
    Graphics2D g = temp.createGraphics();
    g.drawImage(image, 0, 0, null);
    image = temp;
  }
  pixels = ((DataBufferByte) image.getRaster().getDataBuffer()).getData();
}

代码示例来源：origin: libgdx/libgdx

public Rect (BufferedImage source, int left, int top, int newWidth, int newHeight, boolean isPatch) {
  image = new BufferedImage(source.getColorModel(),
    source.getRaster().createWritableChild(left, top, newWidth, newHeight, 0, 0, null),
    source.getColorModel().isAlphaPremultiplied(), null);
  offsetX = left;
  offsetY = top;
  regionWidth = newWidth;
  regionHeight = newHeight;
  originalWidth = source.getWidth();
  originalHeight = source.getHeight();
  width = newWidth;
  height = newHeight;
  this.isPatch = isPatch;
}

代码示例来源：origin: Dreampie/Resty

public BufferedImage filter(BufferedImage src, BufferedImage dest) {
 if (dest == null) {
  dest = createCompatibleDestImage(src, null);
 }
 int width = src.getWidth();
 int height = src.getHeight();
 int[] inPixels = new int[width * height];
 int[] outPixels = new int[width * height];
 src.getRaster().getDataElements(0, 0, width, height, inPixels);
 filter(inPixels, outPixels, width, height);
 dest.getRaster().setDataElements(0, 0, width, height, outPixels);
 return dest;
}

代码示例来源：origin: kevin-wayne/algs4

WritableRaster raster = offscreenImage.getRaster();
WritableRaster newRaster;
newRaster = raster.createWritableChild(0, 0, width, height, 0, 0, new int[] {0, 1, 2});
                       cm.getGreenMask(),
                       cm.getBlueMask());
BufferedImage rgbBuffer = new BufferedImage(newCM, newRaster, false,  null);
try {
  ImageIO.write(rgbBuffer, suffix, file);

代码示例来源：origin: sarxos/webcam-capture

public void rgbFrame(boolean isPrerollFrame, int width, int height, IntBuffer rgb) {
  LOG.trace("RGB frame ({}x{}), preroll is {}", width, height, isPrerollFrame);
  final BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
  final int[] pixels = ((DataBufferInt) image.getRaster().getDataBuffer()).getData();
  rgb.get(pixels, 0, width * height);
  try {
    exchanger.exchange(image);
  } catch (InterruptedException e) {
    throw new WebcamException("Exchange has been interrupted", e);
  }
}

代码示例来源：origin: ivan-vasilev/neuralnetworks

images[i] = new BufferedImage(32, 32, BufferedImage.TYPE_3BYTE_BGR);
byte[] pixels = ((DataBufferByte) images[i].getRaster().getDataBuffer()).getData();

代码示例来源：origin: jMonkeyEngine/jmonkeyengine

private Object extractImageData(BufferedImage img){
  DataBuffer buf = img.getRaster().getDataBuffer();
  switch (buf.getDataType()){
    case DataBuffer.TYPE_BYTE:
      DataBufferByte byteBuf = (DataBufferByte) buf;
      return byteBuf.getData();
    case DataBuffer.TYPE_USHORT:
      DataBufferUShort shortBuf = (DataBufferUShort) buf;
      return shortBuf.getData();
  }
  return null;
}

代码示例来源：origin: apache/cloudstack

public static void main(String args[]) {
  System.setProperty("streamer.Element.debug", "true");
  BufferedImageCanvas canvas = new BufferedImageCanvas(4, 4);
  Element renderer = new BufferedImagePixelsAdapter("renderer", canvas);
  byte[] pixels = new byte[] {1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5,
      6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16};
  int[] pixelsLE = new int[] {0x04030201, 0x08070605, 0x0c0b0a09, 0x100f0e0d, 0x04030201, 0x08070605, 0x0c0b0a09, 0x100f0e0d, 0x04030201, 0x08070605,
      0x0c0b0a09, 0x100f0e0d, 0x04030201, 0x08070605, 0x0c0b0a09, 0x100f0e0d};
  ByteBuffer buf = new ByteBuffer(pixels);
  buf.putMetadata(TARGET_X, 0);
  buf.putMetadata(TARGET_Y, 0);
  buf.putMetadata(WIDTH, 4);
  buf.putMetadata(HEIGHT, 4);
  buf.putMetadata(PIXEL_FORMAT, RGB888LE32);
  renderer.handleData(buf, null);
  String actualData = Arrays.toString(((DataBufferInt)canvas.getOfflineImage().getRaster().getDataBuffer()).getData());
  String expectedData = Arrays.toString(pixelsLE);
  if (!actualData.equals(expectedData))
    s_logger.error("Actual image:   " + actualData + "\nExpected image: " + expectedData + ".");
}

代码示例来源：origin: MovingBlocks/Terasology

final WritableRaster raster = image.getRaster();
final DataBufferByte dbf = (DataBufferByte) raster.getDataBuffer();
byte[] data = dbf.getData();
final int stride = data.length / (image.getWidth() * image.getHeight());
   + image.getWidth() * image.getHeight() * stride + ", instead of " + data.length);
final ByteBuffer buf = ByteBuffer.allocateDirect(4 * image.getWidth() * image.getHeight());

代码示例来源：origin: libgdx/libgdx

private void generatePremultiplyAlpha(File out){
  try {
    BufferedImage outImage = new BufferedImage(image.getWidth(), image.getHeight(), BufferedImage.TYPE_INT_ARGB);
    float[] color = new float[4];
    WritableRaster raster = image.getRaster();
    WritableRaster outRaster = outImage.getRaster();
    for(int x =0, w = image.getWidth(); x< w; ++x)
      for(int y =0, h = image.getHeight(); y< h; ++y){
        raster.getPixel(x, y, color);
        float alpha = color[3]/255f;
        for(int i=0;i < 3; ++i) 
          color[i] *= alpha;
        outRaster.setPixel(x, y, color);
      }
    ImageIO.write(outImage, "png", out);
  } catch (IOException e) {
    e.printStackTrace();
  }
}

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