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media-session: add bluez-autoswitch module

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Add module that switches bluez device profile to HFP/HSP if an input
stream (non-monitor, autoconnect) appears, and the current default
output device is bluez one that does not have input route.

When all input streams are gone, switch all changed profiles back.

Pending restore state is saved to session manager state files, in order
to restore it if e.g. devices get disconnected.  This usually is not
currently necessary since the bluez5 plugin prefers to connect to A2DP
over HFP, but might matter in future with backchannel-enabled A2DP
codecs.
This commit is contained in:
Pauli Virtanen 2021-07-30 19:40:32 +03:00 • committed by Wim Taymans
parent 127781cfc8
commit 76bae0cac4
6 changed files with 625 additions and 0 deletions
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2
src/examples/media-session/media-session.c
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@ -94,6 +94,7 @@ int sm_alsa_midi_start(struct sm_media_session *sess);
int sm_v4l2_monitor_start(struct sm_media_session *sess);
int sm_libcamera_monitor_start(struct sm_media_session *sess);
int sm_bluez5_monitor_start(struct sm_media_session *sess);
int sm_bluez5_autoswitch_start(struct sm_media_session *sess);
int sm_alsa_monitor_start(struct sm_media_session *sess);
int sm_suspend_node_start(struct sm_media_session *sess);
#ifdef HAVE_SYSTEMD
@ -2388,6 +2389,7 @@ static const struct {
{ "v4l2", "video for linux udev detection", sm_v4l2_monitor_start, NULL },
{ "libcamera", "libcamera udev detection", sm_libcamera_monitor_start, NULL },
{ "bluez5", "bluetooth support", sm_bluez5_monitor_start, NULL },
{ "bluez5-autoswitch", "switch bluetooth profiles automatically", sm_bluez5_autoswitch_start, NULL },
{ "suspend-node", "suspend inactive nodes", sm_suspend_node_start, NULL },
{ "policy-node", "configure and link nodes", sm_policy_node_start, NULL },
{ "pulse-bridge", "accept pulseaudio clients", sm_pulse_bridge_start, NULL },