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components/bt/host/bluedroid/bta/hf_client/bta_hf_client_sco.c
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/******************************************************************************
*
* Copyright (c) 2014 The Android Open Source Project
* Copyright (C) 2004-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
#include "bta_hf_client_int.h"
#include "bta/bta_hf_client_api.h"
#include "common/bt_trace.h"
#include <string.h>
#include "common/bt_defs.h"
#include "common/bt_target.h"
#include "osi/allocator.h"
#if (BTM_SCO_HCI_INCLUDED == TRUE )
#include "bta/bta_hf_client_co.h"
#include "hci/hci_audio.h"
#endif
#if BT_HF_CLIENT_BQB_INCLUDED
static BOOLEAN s_bta_hf_client_bqb_esco_s1_flag = false;
#endif /* BT_HF_CLIENT_BQB_INCLUDED */
#if (BTA_HF_INCLUDED == TRUE)
#define BTA_HF_CLIENT_NO_EDR_ESCO (BTM_SCO_PKT_TYPES_MASK_NO_2_EV3 | \
BTM_SCO_PKT_TYPES_MASK_NO_3_EV3 | \
BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 | \
BTM_SCO_PKT_TYPES_MASK_NO_3_EV5)
#define BTA_HF_CLIENT_SCO_PARAM_IDX_CVSD 0 /* SCO setting for CVSD */
#define BTA_HF_CLIENT_ESCO_PARAM_IDX_CVSD_S3 1 /* eSCO setting for CVSD S3 */
#define BTA_HF_CLIENT_ESCO_PARAM_IDX_MSBC_T2 2 /* eSCO setting for mSBC T2 */
#define BTA_HF_CLIENT_ESCO_PARAM_IDX_CVSD_S4 3 /* eSCO setting for CVSD S4 */
#define BTA_HF_CLIENT_ESCO_PARAM_IDX_CVSD_S1 4 /* eSCO setting for CVSD S1 */
static const tBTM_ESCO_PARAMS bta_hf_client_esco_params[] = {
/* SCO CVSD */
{
.rx_bw = BTM_64KBITS_RATE,
.tx_bw = BTM_64KBITS_RATE,
.max_latency = 10,
.voice_contfmt = BTM_VOICE_SETTING_CVSD,
.packet_types = (BTM_SCO_PKT_TYPES_MASK_HV1 |
BTM_SCO_PKT_TYPES_MASK_HV3 |
BTM_SCO_PKT_TYPES_MASK_NO_2_EV3 |
BTM_SCO_PKT_TYPES_MASK_NO_3_EV3 |
BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 |
BTM_SCO_PKT_TYPES_MASK_NO_3_EV5),
.retrans_effort = BTM_ESCO_RETRANS_OFF,
},
/* ESCO CVSD */
{
.rx_bw = BTM_64KBITS_RATE,
.tx_bw = BTM_64KBITS_RATE,
.max_latency = 10,
.voice_contfmt = BTM_VOICE_SETTING_CVSD,
/* Packet Types : 2-EV3 */
.packet_types = (BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 |
BTM_SCO_PKT_TYPES_MASK_NO_3_EV3 |
BTM_SCO_PKT_TYPES_MASK_NO_3_EV5),
.retrans_effort = BTM_ESCO_RETRANS_POWER,
},
/* ESCO mSBC */
{
.rx_bw = BTM_64KBITS_RATE,
.tx_bw = BTM_64KBITS_RATE,
.max_latency = 13,
.voice_contfmt = BTM_VOICE_SETTING_TRANS,
/* Packet Types : 2-EV3 */
.packet_types = (BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 |
BTM_SCO_PKT_TYPES_MASK_NO_3_EV3 |
BTM_SCO_PKT_TYPES_MASK_NO_3_EV5),
.retrans_effort = BTM_ESCO_RETRANS_QUALITY,
},
/* HFP 1.7+ */
/* ESCO CVSD S4 */
{
.rx_bw = BTM_64KBITS_RATE,
.tx_bw = BTM_64KBITS_RATE,
.max_latency = 12,
.voice_contfmt = BTM_VOICE_SETTING_CVSD,
/* Packet Types : 2-EV3 */
.packet_types = (BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 |
BTM_SCO_PKT_TYPES_MASK_NO_3_EV3 |
BTM_SCO_PKT_TYPES_MASK_NO_3_EV5),
.retrans_effort = BTM_ESCO_RETRANS_QUALITY,
},
/* ESCO CVSD S1 */
#if BT_HF_CLIENT_BQB_INCLUDED
{
.rx_bw = BTM_64KBITS_RATE,
.tx_bw = BTM_64KBITS_RATE,
.max_latency = 7,
.voice_contfmt = BTM_VOICE_SETTING_CVSD,
/* Packet Types : EV3 */
.packet_types = (HCI_ESCO_PKT_TYPES_MASK_EV3 |
BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 |
BTM_SCO_PKT_TYPES_MASK_NO_2_EV3 |
BTM_SCO_PKT_TYPES_MASK_NO_3_EV3 |
BTM_SCO_PKT_TYPES_MASK_NO_3_EV5),
.retrans_effort = BTM_ESCO_RETRANS_POWER,
}
#endif /* BT_HF_CLIENT_BQB_INCLUDED */
};
enum {
BTA_HF_CLIENT_SCO_LISTEN_E,
BTA_HF_CLIENT_SCO_OPEN_E, /* open request */
BTA_HF_CLIENT_SCO_CLOSE_E, /* close request */
BTA_HF_CLIENT_SCO_SHUTDOWN_E, /* shutdown request */
BTA_HF_CLIENT_SCO_CONN_OPEN_E, /* sco opened */
BTA_HF_CLIENT_SCO_CONN_CLOSE_E, /* sco closed */
#if (BTM_SCO_HCI_INCLUDED == TRUE )
BTA_HF_CLIENT_SCO_CI_DATA_E, /* sco data ready */
#endif /* #if (BTM_SCO_HCI_INCLUDED == TRUE ) */
};
/*******************************************************************************
**
** Function bta_hf_client_bqb_esco_s1_ctrl
**
** Description Control the usage of CVSD eSCO S1 parameter for BQB test
**
** Returns void
**
*******************************************************************************/
#if BT_HF_CLIENT_BQB_INCLUDED
void bta_hf_client_bqb_esco_s1_ctrl(BOOLEAN enable)
{
s_bta_hf_client_bqb_esco_s1_flag = enable;
}
#endif /* BT_HF_CLIENT_BQB_INCLUDED */
static void bta_hf_client_sco_event(UINT8 event);
/*******************************************************************************
**
** Function bta_hf_client_remove_sco
**
** Description Removes the specified SCO from the system.
** If only_active is TRUE, then SCO is only removed if connected
**
** Returns BOOLEAN - TRUE if Sco removal was started
**
*******************************************************************************/
static BOOLEAN bta_hf_client_sco_remove(BOOLEAN only_active)
{
BOOLEAN removed_started = FALSE;
tBTM_STATUS status;
APPL_TRACE_DEBUG("%s %d", __FUNCTION__, only_active);
if (bta_hf_client_cb.scb.sco_idx != BTM_INVALID_SCO_INDEX) {
status = BTM_RemoveSco(bta_hf_client_cb.scb.sco_idx);
APPL_TRACE_DEBUG("%s idx 0x%04x, status:0x%x", __FUNCTION__, bta_hf_client_cb.scb.sco_idx, status);
if (status == BTM_CMD_STARTED) {
removed_started = TRUE;
}
/* If no connection reset the sco handle */
else if ( (status == BTM_SUCCESS) || (status == BTM_UNKNOWN_ADDR) ) {
bta_hf_client_cb.scb.sco_idx = BTM_INVALID_SCO_INDEX;
}
}
return removed_started;
}
/*******************************************************************************
**
** Function bta_hf_client_cback_sco
**
** Description Call application callback function with SCO event.
**
**
** Returns void
**
*******************************************************************************/
void bta_hf_client_cback_sco(UINT8 event)
{
tBTA_HF_CLIENT_HDR evt;
memset(&evt, 0, sizeof(evt));
evt.sync_conn_handle = BTM_ReadScoHandle(bta_hf_client_cb.scb.sco_idx);
/* call app cback */
(*bta_hf_client_cb.p_cback)(event, (tBTA_HF_CLIENT_HDR *) &evt);
}
#if (BTM_SCO_HCI_INCLUDED == TRUE )
/*******************************************************************************
**
** Function bta_hf_client_sco_read_cback
**
** Description Callback function is the callback function for incoming
** SCO data over HCI.
**
** Returns void
**
*******************************************************************************/
static void bta_hf_client_sco_read_cback (UINT16 sco_idx, BT_HDR *p_data, tBTM_SCO_DATA_FLAG status)
{
if (status != BTM_SCO_DATA_CORRECT)
{
APPL_TRACE_DEBUG("%s: status(%d)", __FUNCTION__, status);
}
bta_hf_client_sco_co_in_data (p_data, status);
osi_free(p_data);
}
#endif /* BTM_SCO_HCI_INCLUDED */
/*******************************************************************************
**
** Function bta_hf_client_sco_conn_rsp
**
** Description Process the SCO connection request
**
**
** Returns void
**
*******************************************************************************/
static void bta_hf_client_sco_conn_rsp(tBTM_ESCO_CONN_REQ_EVT_DATA *p_data)
{
tBTM_ESCO_PARAMS resp;
UINT8 hci_status = HCI_SUCCESS;
UINT8 index = BTA_HF_CLIENT_ESCO_PARAM_IDX_CVSD_S3;
#if (BTM_SCO_HCI_INCLUDED == TRUE )
tBTA_HFP_CODEC_INFO codec_info = {BTA_HFP_SCO_CODEC_PCM};
UINT32 pcm_sample_rate;
#endif
APPL_TRACE_DEBUG("%s: negotiated codec = %d", __FUNCTION__, bta_hf_client_cb.scb.negotiated_codec);
if (bta_hf_client_cb.scb.sco_state == BTA_HF_CLIENT_SCO_LISTEN_ST) {
if (p_data->link_type == BTM_LINK_TYPE_SCO) {
index = BTA_HF_CLIENT_SCO_PARAM_IDX_CVSD;
} else {
if ((bta_hf_client_cb.scb.negotiated_codec == BTM_SCO_CODEC_CVSD) &&
(bta_hf_client_cb.scb.features && BTA_HF_CLIENT_FEAT_ESCO_S4) &&
(bta_hf_client_cb.scb.peer_features && BTA_HF_CLIENT_PEER_ESCO_S4)) {
index = BTA_HF_CLIENT_ESCO_PARAM_IDX_CVSD_S4;
#if BT_HF_CLIENT_BQB_INCLUDED
if (s_bta_hf_client_bqb_esco_s1_flag == true) {
index = BTA_HF_CLIENT_ESCO_PARAM_IDX_CVSD_S1;
}
#endif /* BT_HF_CLIENT_BQB_INCLUDED */
} else if (bta_hf_client_cb.scb.negotiated_codec == BTM_SCO_CODEC_MSBC) {
index = BTA_HF_CLIENT_ESCO_PARAM_IDX_MSBC_T2;
}
}
resp = bta_hf_client_esco_params[index];
/* tell sys to stop av if any */
bta_sys_sco_use(BTA_ID_HS, 1, bta_hf_client_cb.scb.peer_addr);
#if (BTM_SCO_HCI_INCLUDED == TRUE )
bta_hf_client_co_audio_state(bta_hf_client_cb.scb.sco_idx, SCO_STATE_SETUP, 0);
pcm_sample_rate = BTA_HFP_SCO_SAMP_RATE_8K;
/* initialize SCO setup, no voice setting for AG, data rate <==> sample rate */
BTM_ConfigScoPath(bta_hf_client_sco_co_init(pcm_sample_rate, pcm_sample_rate, &codec_info, 0),
bta_hf_client_sco_read_cback, NULL, TRUE);
#endif
} else {
hci_status = HCI_ERR_HOST_REJECT_DEVICE;
}
BTM_EScoConnRsp(p_data->sco_inx, hci_status, &resp);
}
#if (BTM_SCO_HCI_INCLUDED == TRUE)
/*******************************************************************************
**
** Function bta_hf_client_pkt_stat_nums
**
** Description Get the packet status number
**
**
** Returns void
**
*******************************************************************************/
void bta_hf_client_pkt_stat_nums(tBTA_HF_CLIENT_DATA *p_data)
{
tBTA_SCO_PKT_STAT_NUMS pkt_stat_nums;
uint16_t sync_conn_handle = p_data->pkt_stat.sync_conn_handle;
BTM_PktStatNumsGet(sync_conn_handle, (tBTM_SCO_PKT_STAT_NUMS *) &pkt_stat_nums);
/* call app cback */
if (bta_hf_client_cb.p_cback) {
(*bta_hf_client_cb.p_cback)(BTA_HF_CLIENT_PKT_STAT_NUMS_GET_EVT, (void*) &pkt_stat_nums);
}
}
/*******************************************************************************
**
** Function bta_hf_client_ci_sco_data
**
** Description Process the SCO data ready callin event
**
**
** Returns void
**
*******************************************************************************/
void bta_hf_client_ci_sco_data(tBTA_HF_CLIENT_DATA *p_data)
{
UNUSED(p_data);
bta_hf_client_sco_event(BTA_HF_CLIENT_SCO_CI_DATA_E);
}
#endif
/*******************************************************************************
**
** Function bta_hf_client_sco_connreq_cback
**
** Description BTM eSCO connection requests and eSCO change requests
** Only the connection requests are processed by BTA.
**
** Returns void
**
*******************************************************************************/
static void bta_hf_client_esco_connreq_cback(tBTM_ESCO_EVT event, tBTM_ESCO_EVT_DATA *p_data)
{
APPL_TRACE_DEBUG("%s %d", __FUNCTION__, event);
if (event != BTM_ESCO_CONN_REQ_EVT) {
return;
}
/* TODO check remote bdaddr, should allow connect only from device with
* active SLC */
bta_hf_client_cb.scb.sco_idx = p_data->conn_evt.sco_inx;
bta_hf_client_sco_conn_rsp(&p_data->conn_evt);
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_OPENING_ST;
}
/*******************************************************************************
**
** Function bta_hf_client_sco_conn_cback
**
** Description BTM SCO connection callback.
**
**
** Returns void
**
*******************************************************************************/
static void bta_hf_client_sco_conn_cback(UINT16 sco_idx)
{
BT_HDR *p_buf;
UINT8 *rem_bd;
tBTM_ESCO_DATA sco_data;
APPL_TRACE_DEBUG("%s %d", __FUNCTION__, sco_idx);
rem_bd = BTM_ReadScoBdAddr(sco_idx);
BTM_ReadEScoLinkParms (sco_idx, &sco_data);
if (rem_bd && bdcmp(bta_hf_client_cb.scb.peer_addr, rem_bd) == 0 &&
bta_hf_client_cb.scb.svc_conn && bta_hf_client_cb.scb.sco_idx == sco_idx) {
bta_hf_client_cb.scb.link_type = sco_data.link_type;
bta_hf_client_cb.scb.tx_interval = sco_data.tx_interval;
bta_hf_client_cb.scb.retrans_window = sco_data.retrans_window;
bta_hf_client_cb.scb.air_mode = sco_data.air_mode;
if (sco_data.air_mode == BTM_SCO_AIR_MODE_CVSD) {
bta_hf_client_cb.scb.out_pkt_len = sco_data.tx_pkt_len * 2;
bta_hf_client_cb.scb.in_pkt_len = sco_data.rx_pkt_len * 2;
} else {
bta_hf_client_cb.scb.out_pkt_len = sco_data.tx_pkt_len;
bta_hf_client_cb.scb.in_pkt_len = sco_data.rx_pkt_len;
}
if ((p_buf = (BT_HDR *) osi_malloc(sizeof(BT_HDR))) != NULL) {
p_buf->event = BTA_HF_CLIENT_SCO_OPEN_EVT;
p_buf->layer_specific = bta_hf_client_cb.scb.conn_handle;
bta_sys_sendmsg(p_buf);
}
}
/* no match found; disconnect sco, init sco variables */
else {
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_SHUTDOWN_ST;
BTM_RemoveSco(sco_idx);
}
}
/*******************************************************************************
**
** Function bta_hf_client_sco_disc_cback
**
** Description BTM SCO disconnection callback.
**
**
** Returns void
**
*******************************************************************************/
static void bta_hf_client_sco_disc_cback(UINT16 sco_idx)
{
BT_HDR *p_buf;
APPL_TRACE_DEBUG("%s %d", __FUNCTION__, sco_idx);
if (bta_hf_client_cb.scb.sco_idx == sco_idx) {
#if (BTM_SCO_HCI_INCLUDED == TRUE )
tBTM_STATUS status = BTM_ConfigScoPath(BTM_SCO_ROUTE_PCM, NULL, NULL, TRUE);
APPL_TRACE_DEBUG("%s close config status = %d", __FUNCTION__, status);
UNUSED(status);
/* SCO clean up here */
bta_hf_client_sco_co_close();
#endif
if ((p_buf = (BT_HDR *) osi_malloc(sizeof(BT_HDR))) != NULL) {
p_buf->event = BTA_HF_CLIENT_SCO_CLOSE_EVT;
p_buf->layer_specific = bta_hf_client_cb.scb.conn_handle;;
bta_sys_sendmsg(p_buf);
}
}
}
/*******************************************************************************
**
** Function bta_hf_client_sco_create
**
** Description
**
**
** Returns void
**
*******************************************************************************/
static void bta_hf_client_sco_create(BOOLEAN is_orig)
{
tBTM_STATUS status;
UINT8 *p_bd_addr = NULL;
tBTM_ESCO_PARAMS params;
UINT8 index = BTA_HF_CLIENT_ESCO_PARAM_IDX_CVSD_S3;
#if (BTM_SCO_HCI_INCLUDED == TRUE )
tBTM_SCO_ROUTE_TYPE sco_route;
tBTA_HFP_CODEC_INFO codec_info = {BTA_HFP_SCO_CODEC_PCM};
UINT32 pcm_sample_rate;
#endif
APPL_TRACE_DEBUG("%s %d", __FUNCTION__, is_orig);
/* Make sure this sco handle is not already in use */
if (bta_hf_client_cb.scb.sco_idx != BTM_INVALID_SCO_INDEX) {
APPL_TRACE_WARNING("%s: Index 0x%04x already in use", __FUNCTION__,
bta_hf_client_cb.scb.sco_idx);
return;
}
if (bta_hf_client_cb.scb.negotiated_codec == BTM_SCO_CODEC_CVSD) {
if ((bta_hf_client_cb.scb.features && BTA_HF_CLIENT_FEAT_ESCO_S4) &&
(bta_hf_client_cb.scb.peer_features && BTA_HF_CLIENT_PEER_ESCO_S4)) {
index = BTA_HF_CLIENT_ESCO_PARAM_IDX_CVSD_S4;
}
} else if (bta_hf_client_cb.scb.negotiated_codec == BTM_SCO_CODEC_MSBC) {
index = BTA_HF_CLIENT_ESCO_PARAM_IDX_MSBC_T2;
}
params = bta_hf_client_esco_params[index];
/* if initiating set current scb and peer bd addr */
if (is_orig) {
/* Attempt to use eSCO if remote host supports HFP >= 1.5 */
if (bta_hf_client_cb.scb.peer_version >= HFP_VERSION_1_5 && !bta_hf_client_cb.scb.retry_with_sco_only) {
BTM_SetEScoMode(BTM_LINK_TYPE_ESCO, ¶ms);
/* If ESCO or EDR ESCO, retry with SCO only in case of failure */
if ((params.packet_types & BTM_ESCO_LINK_ONLY_MASK)
|| !((params.packet_types & ~(BTM_ESCO_LINK_ONLY_MASK | BTM_SCO_LINK_ONLY_MASK)) ^ BTA_HF_CLIENT_NO_EDR_ESCO)) {
bta_hf_client_cb.scb.retry_with_sco_only = TRUE;
APPL_TRACE_API("Setting retry_with_sco_only to TRUE");
}
} else {
if (bta_hf_client_cb.scb.retry_with_sco_only) {
APPL_TRACE_API("retrying with SCO only");
}
bta_hf_client_cb.scb.retry_with_sco_only = FALSE;
BTM_SetEScoMode(BTM_LINK_TYPE_SCO, ¶ms);
}
/* tell sys to stop av if any */
bta_sys_sco_use(BTA_ID_HS, 1, bta_hf_client_cb.scb.peer_addr);
#if (BTM_SCO_HCI_INCLUDED == TRUE )
/* Allow any platform specific pre-SCO set up to take place */
bta_hf_client_co_audio_state(bta_hf_client_cb.scb.sco_idx, SCO_STATE_SETUP, 0);
pcm_sample_rate = BTA_HFP_SCO_SAMP_RATE_8K;
sco_route = bta_hf_client_sco_co_init(pcm_sample_rate, pcm_sample_rate, &codec_info, 0);
/* initialize SCO setup, no voice setting for AG, data rate <==> sample rate */
BTM_ConfigScoPath(sco_route, bta_hf_client_sco_read_cback, NULL, TRUE);
#endif
} else {
bta_hf_client_cb.scb.retry_with_sco_only = FALSE;
}
p_bd_addr = bta_hf_client_cb.scb.peer_addr;
status = BTM_CreateSco(p_bd_addr, is_orig, params.packet_types,
&bta_hf_client_cb.scb.sco_idx, bta_hf_client_sco_conn_cback,
bta_hf_client_sco_disc_cback);
if (status == BTM_CMD_STARTED && !is_orig) {
if (!BTM_RegForEScoEvts(bta_hf_client_cb.scb.sco_idx, bta_hf_client_esco_connreq_cback)) {
APPL_TRACE_DEBUG("%s SCO registration success", __FUNCTION__);
}
}
APPL_TRACE_API("%s: orig %d, inx 0x%04x, status 0x%x, pkt types 0x%04x",
__FUNCTION__, is_orig, bta_hf_client_cb.scb.sco_idx,
status, params.packet_types);
}
/*******************************************************************************
**
** Function bta_hf_client_sco_event
**
** Description Handle SCO events
**
**
** Returns void
**
*******************************************************************************/
static void bta_hf_client_sco_event(UINT8 event)
{
APPL_TRACE_DEBUG("%s state: %d event: %d", __FUNCTION__,
bta_hf_client_cb.scb.sco_state, event);
#if (BTM_SCO_HCI_INCLUDED == TRUE )
tBTA_HF_CLIENT_SCB *p_scb = &bta_hf_client_cb.scb;
BT_HDR *p_buf;
#endif
#if (BTM_SCO_HCI_INCLUDED == TRUE )
if (event == BTA_HF_CLIENT_SCO_CI_DATA_E) {
UINT16 pkt_offset = 1 + HCI_SCO_PREAMBLE_SIZE;
UINT16 len_to_send = 0;
while (true)
{
p_buf = osi_calloc(sizeof(BT_HDR) + pkt_offset + p_scb->out_pkt_len);
if (!p_buf) {
APPL_TRACE_WARNING("%s, no mem", __FUNCTION__);
break;
}
p_buf->offset = pkt_offset;
len_to_send = bta_hf_client_sco_co_out_data(p_buf->data + pkt_offset);
p_buf->len = len_to_send;
if (len_to_send == p_scb->out_pkt_len) {
// expect to get the exact size of data from upper layer
if (bta_hf_client_cb.scb.sco_state == BTA_HF_CLIENT_SCO_OPEN_ST) {
tBTM_STATUS write_stat = BTM_WriteScoData(p_scb->sco_idx, p_buf);
if (write_stat != BTM_SUCCESS) {
break;
}
} else {
osi_free(p_buf);
}
} else {
osi_free(p_buf);
break;
}
}
return;
}
#endif
switch (bta_hf_client_cb.scb.sco_state) {
case BTA_HF_CLIENT_SCO_SHUTDOWN_ST:
switch (event) {
case BTA_HF_CLIENT_SCO_LISTEN_E:
/* create sco listen connection */
bta_hf_client_sco_create(FALSE);
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_LISTEN_ST;
break;
default:
APPL_TRACE_WARNING("BTA_HF_CLIENT_SCO_SHUTDOWN_ST: Ignoring event %d", event);
break;
}
break;
case BTA_HF_CLIENT_SCO_LISTEN_ST:
switch (event) {
case BTA_HF_CLIENT_SCO_LISTEN_E:
/* create sco listen connection (Additional channel) */
bta_hf_client_sco_create(FALSE);
break;
case BTA_HF_CLIENT_SCO_OPEN_E:
/* remove listening connection */
bta_hf_client_sco_remove(FALSE);
/* create sco connection to peer */
bta_hf_client_sco_create(TRUE);
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_OPENING_ST;
break;
case BTA_HF_CLIENT_SCO_SHUTDOWN_E:
/* remove listening connection */
bta_hf_client_sco_remove(FALSE);
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_SHUTDOWN_ST;
break;
case BTA_HF_CLIENT_SCO_CLOSE_E:
/* remove listening connection */
/* Ignore the event. We need to keep listening SCO for the active SLC */
APPL_TRACE_WARNING("BTA_HF_CLIENT_SCO_LISTEN_ST: Ignoring event %d", event);
break;
case BTA_HF_CLIENT_SCO_CONN_CLOSE_E:
/* sco failed; create sco listen connection */
bta_hf_client_sco_create(FALSE);
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_LISTEN_ST;
break;
default:
APPL_TRACE_WARNING("BTA_HF_CLIENT_SCO_LISTEN_ST: Ignoring event %d", event);
break;
}
break;
case BTA_HF_CLIENT_SCO_OPENING_ST:
switch (event) {
case BTA_HF_CLIENT_SCO_CLOSE_E:
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_OPEN_CL_ST;
break;
case BTA_HF_CLIENT_SCO_SHUTDOWN_E:
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_SHUTTING_ST;
break;
case BTA_HF_CLIENT_SCO_CONN_OPEN_E:
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_OPEN_ST;
break;
case BTA_HF_CLIENT_SCO_CONN_CLOSE_E:
/* sco failed; create sco listen connection */
bta_hf_client_sco_create(FALSE);
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_LISTEN_ST;
break;
default:
APPL_TRACE_WARNING("BTA_HF_CLIENT_SCO_OPENING_ST: Ignoring event %d", event);
break;
}
break;
case BTA_HF_CLIENT_SCO_OPEN_CL_ST:
switch (event) {
case BTA_HF_CLIENT_SCO_OPEN_E:
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_OPENING_ST;
break;
case BTA_HF_CLIENT_SCO_SHUTDOWN_E:
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_SHUTTING_ST;
break;
case BTA_HF_CLIENT_SCO_CONN_OPEN_E:
/* close sco connection */
bta_hf_client_sco_remove(TRUE);
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_CLOSING_ST;
break;
case BTA_HF_CLIENT_SCO_CONN_CLOSE_E:
/* sco failed; create sco listen connection */
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_LISTEN_ST;
break;
default:
APPL_TRACE_WARNING("BTA_HF_CLIENT_SCO_OPEN_CL_ST: Ignoring event %d", event);
break;
}
break;
case BTA_HF_CLIENT_SCO_OPEN_ST:
switch (event) {
case BTA_HF_CLIENT_SCO_CLOSE_E:
/* close sco connection if active */
if (bta_hf_client_sco_remove(TRUE)) {
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_CLOSING_ST;
}
break;
case BTA_HF_CLIENT_SCO_SHUTDOWN_E:
/* remove all listening connections */
bta_hf_client_sco_remove(FALSE);
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_SHUTTING_ST;
break;
case BTA_HF_CLIENT_SCO_CONN_CLOSE_E:
/* peer closed sco; create sco listen connection */
bta_hf_client_sco_create(FALSE);
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_LISTEN_ST;
break;
default:
APPL_TRACE_WARNING("BTA_HF_CLIENT_SCO_OPEN_ST: Ignoring event %d", event);
break;
}
break;
case BTA_HF_CLIENT_SCO_CLOSING_ST:
switch (event) {
case BTA_HF_CLIENT_SCO_OPEN_E:
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_CLOSE_OP_ST;
break;
case BTA_HF_CLIENT_SCO_SHUTDOWN_E:
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_SHUTTING_ST;
break;
case BTA_HF_CLIENT_SCO_CONN_CLOSE_E:
/* peer closed sco; create sco listen connection */
bta_hf_client_sco_create(FALSE);
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_LISTEN_ST;
break;
default:
APPL_TRACE_WARNING("BTA_HF_CLIENT_SCO_CLOSING_ST: Ignoring event %d", event);
break;
}
break;
case BTA_HF_CLIENT_SCO_CLOSE_OP_ST:
switch (event) {
case BTA_HF_CLIENT_SCO_CLOSE_E:
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_CLOSING_ST;
break;
case BTA_HF_CLIENT_SCO_SHUTDOWN_E:
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_SHUTTING_ST;
break;
case BTA_HF_CLIENT_SCO_CONN_CLOSE_E:
/* open sco connection */
bta_hf_client_sco_create(TRUE);
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_OPENING_ST;
break;
default:
APPL_TRACE_WARNING("BTA_HF_CLIENT_SCO_CLOSE_OP_ST: Ignoring event %d", event);
break;
}
break;
case BTA_HF_CLIENT_SCO_SHUTTING_ST:
switch (event) {
case BTA_HF_CLIENT_SCO_CONN_OPEN_E:
/* close sco connection; wait for conn close event */
bta_hf_client_sco_remove(TRUE);
break;
case BTA_HF_CLIENT_SCO_CONN_CLOSE_E:
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_SHUTDOWN_ST;
break;
case BTA_HF_CLIENT_SCO_SHUTDOWN_E:
bta_hf_client_cb.scb.sco_state = BTA_HF_CLIENT_SCO_SHUTDOWN_ST;
break;
default:
APPL_TRACE_WARNING("BTA_HF_CLIENT_SCO_SHUTTING_ST: Ignoring event %d", event);
break;
}
break;
default:
break;
}
}
/*******************************************************************************
**
** Function bta_hf_client_sco_listen
**
** Description Initialize SCO listener
**
**
** Returns void
**
*******************************************************************************/
void bta_hf_client_sco_listen(tBTA_HF_CLIENT_DATA *p_data)
{
UNUSED(p_data);
APPL_TRACE_DEBUG("%s", __FUNCTION__);
bta_hf_client_sco_event(BTA_HF_CLIENT_SCO_LISTEN_E);
}
/*******************************************************************************
**
** Function bta_hf_client_sco_shutdown
**
** Description
**
**
** Returns void
**
*******************************************************************************/
void bta_hf_client_sco_shutdown(tBTA_HF_CLIENT_DATA *p_data)
{
UNUSED(p_data);
APPL_TRACE_DEBUG("%s", __FUNCTION__);
bta_hf_client_sco_event(BTA_HF_CLIENT_SCO_SHUTDOWN_E);
}
/*******************************************************************************
**
** Function bta_hf_client_sco_conn_open
**
** Description
**
**
** Returns void
**
*******************************************************************************/
void bta_hf_client_sco_conn_open(tBTA_HF_CLIENT_DATA *p_data)
{
UNUSED(p_data);
APPL_TRACE_DEBUG("%s", __FUNCTION__);
bta_hf_client_sco_event(BTA_HF_CLIENT_SCO_CONN_OPEN_E);
bta_sys_sco_open(BTA_ID_HS, 1, bta_hf_client_cb.scb.peer_addr);
#if (BTM_SCO_HCI_INCLUDED == TRUE)
bta_hf_client_co_audio_state(bta_hf_client_cb.scb.sco_idx, SCO_STATE_ON, 0);
/* open SCO codec if SCO is routed through transport */
bta_hf_client_sco_co_open(bta_hf_client_cb.scb.sco_idx, bta_hf_client_cb.scb.air_mode,
bta_hf_client_cb.scb.out_pkt_len, BTA_HF_CLIENT_CI_SCO_DATA_EVT);
#endif
if (bta_hf_client_cb.scb.negotiated_codec == BTM_SCO_CODEC_MSBC) {
bta_hf_client_cback_sco(BTA_HF_CLIENT_AUDIO_MSBC_OPEN_EVT);
} else {
bta_hf_client_cback_sco(BTA_HF_CLIENT_AUDIO_OPEN_EVT);
}
bta_hf_client_cb.scb.retry_with_sco_only = FALSE;
}
/*******************************************************************************
**
** Function bta_hf_client_sco_conn_close
**
** Description
**
**
** Returns void
**
*******************************************************************************/
void bta_hf_client_sco_conn_close(tBTA_HF_CLIENT_DATA *p_data)
{
APPL_TRACE_DEBUG("%s", __FUNCTION__);
/* clear current scb */
bta_hf_client_cb.scb.sco_idx = BTM_INVALID_SCO_INDEX;
/* retry_with_sco_only, will be set only when initiator
** and HFClient is first trying to establish an eSCO connection */
if (bta_hf_client_cb.scb.retry_with_sco_only && bta_hf_client_cb.scb.svc_conn) {
bta_hf_client_sco_create(TRUE);
} else {
bta_hf_client_sco_event(BTA_HF_CLIENT_SCO_CONN_CLOSE_E);
bta_sys_sco_close(BTA_ID_HS, 1, bta_hf_client_cb.scb.peer_addr);
bta_sys_sco_unuse(BTA_ID_HS, 1, bta_hf_client_cb.scb.peer_addr);
/* call app callback */
bta_hf_client_cback_sco(BTA_HF_CLIENT_AUDIO_CLOSE_EVT);
if (bta_hf_client_cb.scb.sco_close_rfc == TRUE) {
bta_hf_client_cb.scb.sco_close_rfc = FALSE;
bta_hf_client_rfc_do_close(p_data);
}
}
bta_hf_client_cb.scb.retry_with_sco_only = FALSE;
}
/*******************************************************************************
**
** Function bta_hf_client_sco_open
**
** Description
**
**
** Returns void
**
*******************************************************************************/
void bta_hf_client_sco_open(tBTA_HF_CLIENT_DATA *p_data)
{
UNUSED(p_data);
APPL_TRACE_DEBUG("%s", __FUNCTION__);
bta_hf_client_sco_event(BTA_HF_CLIENT_SCO_OPEN_E);
}
/*******************************************************************************
**
** Function bta_hf_client_sco_close
**
** Description
**
**
** Returns void
**
*******************************************************************************/
void bta_hf_client_sco_close(tBTA_HF_CLIENT_DATA *p_data)
{
UNUSED(p_data);
APPL_TRACE_DEBUG("%s 0x%x", __FUNCTION__, bta_hf_client_cb.scb.sco_idx);
if (bta_hf_client_cb.scb.sco_idx != BTM_INVALID_SCO_INDEX) {
bta_hf_client_sco_event(BTA_HF_CLIENT_SCO_CLOSE_E);
}
}
#endif /* #if (BTA_HF_INCLUDED == TRUE) */
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