public synchronized Raster getTile(int tileX, int tileY) {
if (tileX != 0 || tileY != 0) {
throw new IllegalArgumentException(JaiI18N.getString("JPEGImageDecoder4"));
}
return image.getTile(0, 0);
}
/**
* Construct a JPEGmage.
*
* @param stream The JPEG InputStream.
*/
public JPEGImage(InputStream stream) {
com.sun.image.codec.jpeg.JPEGImageDecoder decoder =
com.sun.image.codec.jpeg.JPEGCodec.createJPEGDecoder(stream);
try {
// decodeAsBufferedImage performs default color conversions
image = decoder.decodeAsBufferedImage();
} catch (ImageFormatException e) {
throw new RuntimeException(JaiI18N.getString("JPEGImageDecoder1"));
} catch (IOException e) {
throw new RuntimeException(JaiI18N.getString("JPEGImageDecoder2"));
}
minX = 0;
minY = 0;
tileWidth = width = image.getWidth();
tileHeight = height = image.getHeight();
// Force image to have a ComponentSampleModel
// since SinglePixelPackedSampleModels are not working
if (!(image.getSampleModel() instanceof ComponentSampleModel)) {
int type = -1;
int numBands = image.getSampleModel().getNumBands();
if (numBands == 1) {
type = BufferedImage.TYPE_BYTE_GRAY;
} else if (numBands == 3) {
type = BufferedImage.TYPE_3BYTE_BGR;
} else if (numBands == 4) {
type = BufferedImage.TYPE_4BYTE_ABGR;
} else {
throw new RuntimeException(JaiI18N.getString("JPEGImageDecoder3"));
}
BufferedImage bi = new BufferedImage(width, height, type);
Graphics2D g = bi.createGraphics();
g.drawRenderedImage(image, new AffineTransform());
image = bi;
}
sampleModel = image.getSampleModel();
colorModel = image.getColorModel();
}
public RenderedImage decodeAsRenderedImage(int page) throws IOException {
if (page != 0) {
throw new IOException(JaiI18N.getString("JPEGImageDecoder0"));
}
return new JPEGImage(input);
}