float PixSzMM = userAgent.getPixelUnitToMillimeter();
int PixSzInch = (int)(25.4/PixSzMM+0.5);
params.setDensityUnit(JPEGEncodeParam.DENSITY_UNIT_DOTS_INCH);
params.setXDensity(PixSzInch);
params.setYDensity(PixSzInch);
jpegEncoder.encode(img, params);
ostream.flush();
} catch (IOException ex) {
throw new TranscoderException(ex);
}
}