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bluez5: remove mtu hardcoding

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Hardcoding MTU is no longer necessary with the reworked SCO i/o, which
guesses suitable write sizes based on rx.
This commit is contained in:
Pauli Virtanen 2020-12-30 21:40:26 +02:00
parent 368182d963
commit 073217ae63
3 changed files with 18 additions and 59 deletions
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27
spa/plugins/bluez5/backend-hsphfpd.c
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@ -56,7 +56,6 @@ struct spa_bt_backend {
unsigned int filters_added:1;
unsigned int msbc_supported:1;
int msbc_force_mtu;
};
enum hsphfpd_volume_control {
@ -713,27 +712,9 @@ static DBusHandlerResult hsphfpd_new_audio_connection(DBusConnection *conn, DBus
pa_hook_fire(pa_bluetooth_discovery_hook(hsphfpd->discovery, PA_BLUETOOTH_HOOK_TRANSPORT_TX_VOLUME_GAIN_CHANGED), transport);
#endif
if (transport->codec == HFP_AUDIO_CODEC_CVSD) {
transport->read_mtu = 48;
transport->write_mtu = 48;
} else if (transport->codec == HFP_AUDIO_CODEC_MSBC && backend->msbc_force_mtu != 0) {
transport->read_mtu = mtu;
transport->read_mtu = mtu;
transport->write_mtu = mtu;
/* Force low write packet size, as kernel (at least <= 5.9) does not
* provide correct values for userspace. The value 24 should be
* right for bluetooth ALT1 mode. See
* https://lore.kernel.org/linux-bluetooth/20201210003528.3pmaxvubiwegxmhl@pali/T/
*
* XXX: revise when hsphfpd/kernel reports correct numbers
*/
transport->write_mtu = (backend->msbc_force_mtu > 0) ? backend->msbc_force_mtu : 24;
spa_log_warn(backend->log, "hsphfpd: forcing write_mtu = %d for mSBC; "
"set bluez5.msbc-force-mtu=0 to use autodetected (%d)",
(int) transport->write_mtu, (int) mtu);
} else {
transport->read_mtu = mtu;
transport->write_mtu = mtu;
}
transport->fd = fd;
if ((r = dbus_message_new_method_return(m)) == NULL)
@ -1507,10 +1488,6 @@ struct spa_bt_backend *backend_hsphfpd_new(struct spa_bt_monitor *monitor,
backend->msbc_supported = strcmp(str, "true") == 0 || atoi(str) == 1;
else
backend->msbc_supported = false;
if (info && (str = spa_dict_lookup(info, "bluez5.msbc-force-mtu")))
backend->msbc_force_mtu = atoi(str);
else
backend->msbc_force_mtu = -1;
spa_list_init(&backend->endpoint_list);