TV Tuner IF Samples for SDR

Hi All,

I want to implement SDR in my Laptop, I am using UTV-382 usb tv tuner. There are code samples (using Dshowlib and other libraries) for getting decoded video and audio signals but i require RF samples from tuner that would be IF samples.
Does anybody know any windows library or API for getting those RF data from tuner?.

Please Reply Soon
Masood