Data or iso image in ram, how to burn using Imapiv2?

Question

I have binary data stored in my application's ram and want to burn this to a disc (dvd, blu ray).

I noticed Imapiv2 requires the file locations to be specificed. Is there a way to pass a ram address's instead and associated parameters (size etc)? 

For data integrity reasons I want to avoid creating files.

I know for files they are staged in the temporary burn folder, so actually I am thinking of having the iso image created in RAM. If this was the case, how could I pass a reference to the Imapiv2?

I have considered a ram disk but this could be accessed by something else (too easily).

Many thanks