Using a MacBook Pro as a monitor for Canon XF300

I used to have a Canon XH-A1, with which I used the FireWire output into my MacBook Pro, and used Adobe OnLocation as a field monitoring solution.

 

This worked absolutely fine for me... until I upgraded my camera to the XF300. The XF300 doesn't have a FireWire output, only HDMI and Component etc. Adobe OnLocation only supports FireWire input, not HDMI.

 

Now I'm stuck - I can no longer use my MacBook on location shoots as a monitor!

 

Can anyone recommend any alternative monitoring software that allows HDMI signal input? Adobe have discontinued OnLocation, so there's no hope of there being an update to improve compatibility.

 

I know that there is a piece of hardware that converts the HDMI signal from the camera into an HDV signal ready for FireWire that is compatible with OnLocation (http://bit.ly/cua9f0) - but it's nearly £600 GBP, and I'm not spending that much money on a simple converter!

 

I just want a piece of monitoring software that I can use on my MacBook that is compatible with the HDMI signal from my XF300.

 

Any help is appreciated!