// 이미지 높이
public int getImageHeight(String pathname) {
int height = -1;
File file = new File(pathname);
if (!file.exists()) return height;
ParameterBlock pb = new ParameterBlock();
pb.add(pathname);
RenderedOp rOp = JAI.create("fileload", pb);
BufferedImage bi = rOp.getAsBufferedImage();
height = bi.getHeight();
return height;
}
// 이미지 폭
public int getImageWidth(String pathname) {
int width = -1;
File file = new File(pathname);
if (!file.exists()) return width;
ParameterBlock pb = new ParameterBlock();
pb.add(pathname);
RenderedOp rOp = JAI.create("fileload", pb);
BufferedImage bi = rOp.getAsBufferedImage();
width = bi.getWidth();
return width;
}
@Test
public void test2BandsBug() {
// build a transparent image
BufferedImage image = new BufferedImage(256, 256, BufferedImage.TYPE_BYTE_GRAY);
RenderedOp img = BandMergeDescriptor.create(null, 0, false, null, image, image);
image = img.getAsBufferedImage();
// create a palette out of it
RenderedImage indexed = quantize(image);
assertTrue(indexed.getColorModel() instanceof IndexColorModel);
IndexColorModel icm = (IndexColorModel) indexed.getColorModel();
// png encoder go mad if they get a one element palette, we need at
// least two
assertEquals(2, icm.getMapSize());
}
/**
* Overrides to use the same method to slice the tiles than {@code MetatileMapOutputFormat} so the
* GeoServer settings such as use native accel are leveraged in the same way when calling {@link
* RenderedImageMapResponse#formatImageOutputStream},
*
* @see org.geowebcache.layer.MetaTile#createTile(int, int, int, int)
*/
@Override
public RenderedImage createTile(
final int x, final int y, final int tileWidth, final int tileHeight) {
// check image type
final int type;
if (metaTileImage instanceof PlanarImage) {
type = 1;
} else if (metaTileImage instanceof BufferedImage) {
type = 2;
} else {
type = 0;
}
// now do the splitting
RenderedImage tile;
switch (type) {
case 0:
// do a crop, and then turn it into a buffered image so that we can release
// the image chain
RenderedOp cropped =
GTCropDescriptor.create(
metaTileImage,
Float.valueOf(x),
Float.valueOf(y),
Float.valueOf(tileWidth),
Float.valueOf(tileHeight),
NO_CACHE);
tile = cropped.getAsBufferedImage();
disposeLater(cropped);
break;
case 1:
final PlanarImage pImage = (PlanarImage) metaTileImage;
final WritableRaster wTile =
WritableRaster.createWritableRaster(
pImage.getSampleModel().createCompatibleSampleModel(tileWidth, tileHeight),
new Point(x, y));
Rectangle sourceArea = new Rectangle(x, y, tileWidth, tileHeight);
sourceArea = sourceArea.intersection(pImage.getBounds());
// copying the data to ensure we don't have side effects when we clean the cache
pImage.copyData(wTile);
if (wTile.getMinX() != 0 || wTile.getMinY() != 0) {
tile =
new BufferedImage(
pImage.getColorModel(),
(WritableRaster) wTile.createTranslatedChild(0, 0),
pImage.getColorModel().isAlphaPremultiplied(),
null);
} else {
tile =
new BufferedImage(
pImage.getColorModel(),
wTile,
pImage.getColorModel().isAlphaPremultiplied(),
null);
}
break;
case 2:
final BufferedImage image = (BufferedImage) metaTileImage;
tile = image.getSubimage(x, y, tileWidth, tileHeight);
break;
default:
throw new IllegalStateException(
Errors.format(
ErrorKeys.ILLEGAL_ARGUMENT_$2,
"metaTile class",
metaTileImage.getClass().toString()));
}
return tile;
}
private static double getRenderTime(RenderedOp op) {
long t0 = System.nanoTime();
op.getAsBufferedImage();
long t1 = System.nanoTime();
return (t1 - t0) / (1000.0 * 1000.0);
}
