/******************************************************************************
*
* 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 <bt_trace.h>
#include <string.h>
#include "bt_utils.h"
#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)
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_LINK_ONLY_MASK |
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_POWER,
},
/* ESCO CVSD */
{
.rx_bw = BTM_64KBITS_RATE,
.tx_bw = BTM_64KBITS_RATE,
.max_latency = 10,
.voice_contfmt = BTM_VOICE_SETTING_CVSD,
/* Allow controller to use all types available except 5-slot EDR */
.packet_types = (BTM_SCO_LINK_ALL_PKT_MASK |
BTM_SCO_PKT_TYPES_MASK_NO_2_EV5 |
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 : EV3 + 2-EV3 */
.packet_types = (BTM_SCO_PKT_TYPES_MASK_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_QUALITY,
}
};
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 */
};
/*******************************************************************************
**
** 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 evt;
memset(&evt, 0, sizeof(evt));
/* call app cback */
(*bta_hf_client_cb.p_cback)(event, (tBTA_HF_CLIENT *) &evt);
}
/*******************************************************************************
**
** 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;
APPL_TRACE_DEBUG("%s", __FUNCTION__);
if (bta_hf_client_cb.scb.sco_state == BTA_HF_CLIENT_SCO_LISTEN_ST)
{
if (p_data->link_type == BTM_LINK_TYPE_SCO)
{
resp = bta_hf_client_esco_params[0];
}
else
{
resp = bta_hf_client_esco_params[bta_hf_client_cb.scb.negotiated_codec];
}
/* tell sys to stop av if any */
bta_sys_sco_use(BTA_ID_HS, 1, bta_hf_client_cb.scb.peer_addr);
}
else
{
hci_status = HCI_ERR_HOST_REJECT_DEVICE;
}
BTM_EScoConnRsp(p_data->sco_inx, hci_status, &resp);
}
/*******************************************************************************
**
** 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)
{
UINT8 *rem_bd;
APPL_TRACE_DEBUG("%s %d", __FUNCTION__, sco_idx);
rem_bd = BTM_ReadScoBdAddr(sco_idx);
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)
{
BT_HDR *p_buf = (BT_HDR *)osi_malloc(sizeof(BT_HDR));
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)
{
APPL_TRACE_DEBUG("%s %d", __func__, sco_idx);
if (bta_hf_client_cb.scb.sco_idx == sco_idx) {
BT_HDR *p_buf = (BT_HDR *)osi_malloc(sizeof(BT_HDR));
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_create_sco
**
** 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;
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;
}
params = bta_hf_client_esco_params[1];
/* 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);
}
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);
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 (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);
}
}