本文整理汇总了Java中javax.imageio.ImageWriteParam.getSourceRegion方法的典型用法代码示例。如果您正苦于以下问题：Java ImageWriteParam.getSourceRegion方法的具体用法？Java ImageWriteParam.getSourceRegion怎么用？Java ImageWriteParam.getSourceRegion使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类javax.imageio.ImageWriteParam的用法示例。
在下文中一共展示了ImageWriteParam.getSourceRegion方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: write
import javax.imageio.ImageWriteParam; //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);
}
}
示例2: write
import javax.imageio.ImageWriteParam; //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);
}
示例3: computeRegions
import javax.imageio.ImageWriteParam; //导入方法依赖的package包/类
/**
* Compute the source region and destination dimensions taking any
* parameter settings into account.
*/
private static void computeRegions(Rectangle sourceBounds,
Dimension destSize,
ImageWriteParam p) {
ImageWriteParam param;
int periodX = 1;
int periodY = 1;
if (p != null) {
int[] sourceBands = p.getSourceBands();
if (sourceBands != null &&
(sourceBands.length != 1 ||
sourceBands[0] != 0)) {
throw new IllegalArgumentException("Cannot sub-band image!");
}
// Get source region and subsampling factors
Rectangle sourceRegion = p.getSourceRegion();
if (sourceRegion != null) {
// Clip to actual image bounds
sourceRegion = sourceRegion.intersection(sourceBounds);
sourceBounds.setBounds(sourceRegion);
}
// Adjust for subsampling offsets
int gridX = p.getSubsamplingXOffset();
int gridY = p.getSubsamplingYOffset();
sourceBounds.x += gridX;
sourceBounds.y += gridY;
sourceBounds.width -= gridX;
sourceBounds.height -= gridY;
// Get subsampling factors
periodX = p.getSourceXSubsampling();
periodY = p.getSourceYSubsampling();
}
// Compute output dimensions
destSize.setSize((sourceBounds.width + periodX - 1)/periodX,
(sourceBounds.height + periodY - 1)/periodY);
if (destSize.width <= 0 || destSize.height <= 0) {
throw new IllegalArgumentException("Empty source region!");
}
}