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bluez5: backend-native: Support legacy audio connection

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This allows to connect the SCO link with old HFP AG devices which
doesn't support the codec negotiation.
The audio connection could be done even without an ongoing call.
This commit is contained in:
Frédéric Danis 2025-03-13 10:59:28 +01:00 • committed by Wim Taymans
parent d238fc8199
commit f6fc307638
1 changed files with 21 additions and 15 deletions
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36
spa/plugins/bluez5/backend-native.c
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@ -1869,6 +1869,8 @@ static void hfp_hf_send_tones(void *data, const char *tones, enum spa_bt_telepho
*err = BT_TELEPHONY_ERROR_NONE;
}
static int sco_do_connect(struct spa_bt_transport *t);
static void hfp_hf_transport_activate(void *data, enum spa_bt_telephony_error *err, uint8_t *cme_error)
{
struct rfcomm *rfcomm = data;
@ -1876,26 +1878,30 @@ static void hfp_hf_transport_activate(void *data, enum spa_bt_telephony_error *e
char reply[20];
bool res;
if (spa_list_is_empty(&rfcomm->telephony_ag->call_list)) {
spa_log_debug(backend->log, "no ongoing call");
*err = BT_TELEPHONY_ERROR_INVALID_STATE;
return;
}
if (rfcomm->transport->fd > 0) {
if (rfcomm->transport && rfcomm->transport->fd > 0) {
spa_log_debug(backend->log, "transport is already active; SCO socket exists");
*err = BT_TELEPHONY_ERROR_INVALID_STATE;
return;
}
rfcomm_send_cmd(rfcomm, "AT+BCC");
res = hfp_hf_wait_for_reply(rfcomm, reply, sizeof(reply));
if (!res || !spa_strstartswith(reply, "OK")) {
spa_log_info(backend->log, "Failed to send AT+BCC");
if (res)
hfp_hf_get_error_from_reply(reply, err, cme_error);
else
*err = BT_TELEPHONY_ERROR_FAILED;
return;
if (rfcomm->codec_negotiation_supported) {
rfcomm_send_cmd(rfcomm, "AT+BCC");
res = hfp_hf_wait_for_reply(rfcomm, reply, sizeof(reply));
if (!res || !spa_strstartswith(reply, "OK")) {
spa_log_info(backend->log, "Failed to send AT+BCC");
if (res)
hfp_hf_get_error_from_reply(reply, err, cme_error);
else
*err = BT_TELEPHONY_ERROR_FAILED;
return;
}
} else {
if (!rfcomm->transport || rfcomm->transport->codec != HFP_AUDIO_CODEC_CVSD) {
*err = BT_TELEPHONY_ERROR_NOT_SUPPORTED;
return;
}
sco_do_connect(rfcomm->transport);
}
*err = BT_TELEPHONY_ERROR_NONE;