My application (Phone Amego) connects with a Bluetooth phone using
the Handsfree Profile for the purpose of CallerID and dialing. I've
noticed some phones establish an audio connection with the Mac by
default such that the speaker and microphone on the phone itself is
disabled.
I'm trying to figure out how to disable or close this audio
connection.
After further study, I understand SCO connections are established by
the Link Manager which resides within the Bluetooth Module or
controller on modern Macs. The HCI (Host Controller Interface) layer
provides the interface to the Bluetooth Module, but I haven't found a
published API to work with the HCI layer directly.
Apple's Packet Logger is able to capture HCI events and shows the SCO
connection setup and succeeding stream of SCO receive packets, so
there is at least an internal API for this. If anyone knows of some
sample code or other resources for working at the HCI layer, I sure
could use a pointer.
Thanks!
- Peter Sichel
Sustainable Softworks
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