version 1 .

; If headset present:
;  - ringing: speaker & headset
;  - notification: speaker & headset
;  - non-speakerphone call: headset
;  - speakerphone call: speaker
;  - music: headset
;
; If headset absent:
;  - ringing: speaker
;  - notification: speaker
;  - non-speakerphone call: earpiece
;  - speakerphone call: speaker
;  - music: speaker
;
.

Mapping = <alsa-mapping @abstract Endpoint @concrete string> .
Endpoint = <source @value Source> / <sink @value Sink> .

Sink =
/ =speaker
/ =headset
/ =earpiece
.

Source =
/ =speakerphone
/ =headset
/ =handset
.

HeadsetSpeakerPresent = <headset-speaker-present> .
HeadsetMicrophonePresent = <headset-microphone-present> .