public TIFFRenderedImage(
TIFFImageReader reader, int imageIndex, ImageReadParam readParam, int width, int height)
throws IOException {
this.reader = reader;
this.imageIndex = imageIndex;
this.tileParam = cloneImageReadParam(readParam, false);
this.subsampleX = tileParam.getSourceXSubsampling();
this.subsampleY = tileParam.getSourceYSubsampling();
this.isSubsampling = this.subsampleX != 1 || this.subsampleY != 1;
this.width = width / subsampleX;
this.height = height / subsampleY;
// If subsampling is being used, we may not match the
// true tile grid exactly, but everything should still work
this.tileWidth = reader.getTileWidth(imageIndex) / subsampleX;
this.tileHeight = reader.getTileHeight(imageIndex) / subsampleY;
Iterator iter = reader.getImageTypes(imageIndex);
this.its = (ImageTypeSpecifier) iter.next();
tileParam.setDestinationType(its);
}
