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bluetooth: remember negotiated HFP codec in native backend

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Part-of: <https://gitlab.freedesktop.org/pulseaudio/pulseaudio/-/merge_requests/507>
This commit is contained in:
Igor V. Kovalenko 2021-02-26 00:23:18 +03:00 • committed by PulseAudio Marge Bot
parent ddad63a23c
commit 436813d8a8
1 changed files with 33 additions and 7 deletions
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40
src/modules/bluetooth/backend-native.c
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@ -60,7 +60,9 @@ struct transport_data {
struct hfp_config {
uint32_t capabilities;
int state;
bool support_codec_negotiation;
bool support_msbc;
int selected_codec;
};
/*
@ -561,6 +563,10 @@ static bool hfp_rfcomm_handle(int fd, pa_bluetooth_transport *t, const char *buf
int val;
char str[5];
/* first-time initialize selected codec to CVSD */
if (c->selected_codec == 0)
c->selected_codec = 1;
/* stateful negotiation */
if (c->state == 0 && sscanf(buf, "AT+BRSF=%d", &val) == 1) {
c->capabilities = val;
@ -569,15 +575,25 @@ static bool hfp_rfcomm_handle(int fd, pa_bluetooth_transport *t, const char *buf
c->state = 1;
return true;
} else if (c->state == 1 && sscanf(buf, "AT+BAC=%3s", str) == 1) {
} else if (sscanf(buf, "AT+BAC=%3s", str) == 1) {
if (strncmp(str, "1,2", 3) == 0)
c->support_msbc = true;
else
c->support_msbc = false;
c->support_codec_negotiation = true;
if (c->state == 1) {
/* initial list of codecs supported by HF */
} else {
/* HF sent updated list of codecs */
}
/* no state change */
return true;
} else if (c->state == 1 && pa_startswith(buf, "AT+CIND=?")) {
/* we declare minimal no indicators */
/* we declare minimal no indicators */
rfcomm_write_response(fd, "+CIND: "
/* many indicators can be supported, only call and
* callheld are mandatory, so that's all we repy */
@ -594,9 +610,14 @@ static bool hfp_rfcomm_handle(int fd, pa_bluetooth_transport *t, const char *buf
} else if ((c->state == 2 || c->state == 3) && pa_startswith(buf, "AT+CMER=")) {
rfcomm_write_response(fd, "OK");
if (c->support_msbc) {
rfcomm_write_response(fd, "+BCS:2");
c->state = 4;
if (c->support_codec_negotiation) {
if (c->support_msbc) {
rfcomm_write_response(fd, "+BCS:2");
c->state = 4;
} else {
rfcomm_write_response(fd, "+BCS:1");
c->state = 4;
}
} else {
c->state = 5;
pa_bluetooth_transport_reconfigure(t, pa_bluetooth_get_hf_codec("CVSD"), sco_transport_write, NULL);
@ -609,8 +630,13 @@ static bool hfp_rfcomm_handle(int fd, pa_bluetooth_transport *t, const char *buf
pa_bluetooth_transport_reconfigure(t, pa_bluetooth_get_hf_codec("CVSD"), sco_transport_write, NULL);
} else if (val == 2) {
pa_bluetooth_transport_reconfigure(t, pa_bluetooth_get_hf_codec("mSBC"), sco_transport_write, sco_setsockopt_enable_bt_voice);
} else
pa_assert_not_reached();
} else {
pa_assert_fp(val != 1 && val != 2);
rfcomm_write_response(fd, "ERROR");
return false;
}
c->selected_codec = val;
if (c->state == 4) {
c->state = 5;