Commits
Misael Lopez Cruz committed 8bbadc3eca1
audio: Legacy: BT SCO voice call support
The Bluetooth SCO voice call has the following data flow:
Uplink:
+----------- SRC -----------+
| |
McASP7 McASP3
| |
Bluetooth Mic
Downlink:
+----------- SRC -----------+
| |
McASP7 McASP3
| |
Bluetooth Speaker
The voice call uses the ALSA PCM devices that are normally used
by the primary output and input. The primary output is switched
to a null/dummy sink when the voice call starts, and switched
back to the ALSA devices when the call ends.
The null/dummy sink consumes the data at the same rate than an
actual PCM device does, but does not render anything to an output
device (e.g. speaker).
Change-Id: I63a41de96c4ed34b60aab9240d10ad83c06c69ac
Signed-off-by: Misael Lopez Cruz <misael.lopez@ti.com>