On 2011-05-23 18:33, Paul Titchener wrote:
To my best understanding an sAPO must be signed to be specific to a particular driver.
Well, if you want the sAPO to process DRM protected audio, it *must* be signed by WHQL itself. This is of course to prevent clever people from intercepting protected audio using custom-made sAPOs.
Of course, I can imagine that Microsoft would never sign an sAPO which is designed to copy the audio stream for the user.
So you're completely right: it's impossible to do this using an sAPO without Microsoft's blessing. They must be using some other technique to access DRM protected audio.
-- Etienne Dechamps / e-t172 - AKE Group Phone: +33 6 23 42 24 82 ****************** WDMAUDIODEV addresses: Post message: mailto:wdmaudiodev@xxxxxxxxxxxxx Subscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=subscribe Unsubscribe: mailto:wdmaudiodev-request@xxxxxxxxxxxxx?subject=unsubscribe Moderator: mailto:wdmaudiodev-moderators@xxxxxxxxxxxxx URL to WDMAUDIODEV page: http://www.wdmaudiodev.com/