Cannot get a smaller sized image that is full frame

[marcmerlin]

Howdy, when I do

    Camera.setWidth ( 192 ); 
    Camera.setHeight ( 128 );

I get a tiny part of the middle of the sensor, when I'd like the full frame scaled down to 192x128

raspistill -w 192 -h 128 -o /tmp/raspicam_image.jpg does this fine, but this library does not.

Is there a way to get the library to scale down the image, or do I have to do it myself in code?

Thanks, Marc