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v811_spc009/system/bt/bta/ag/bta_ag_sco.cc

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/******************************************************************************
*
* Copyright 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.
*
******************************************************************************/
/******************************************************************************
*
* This file contains functions for managing the SCO connection used in AG.
*
******************************************************************************/
#include <base/bind.h>
#include <cstdint>
#include "bt_target.h" // Must be first to define build configuration
#include "bt_trace.h" // Legacy trace logging
#include "bta/ag/bta_ag_int.h"
#include "device/include/controller.h"
#include "device/include/esco_parameters.h"
#include "main/shim/dumpsys.h"
#include "osi/include/log.h"
#include "osi/include/osi.h" // UNUSED_ATTR
#include "stack/btm/btm_sco.h"
#include "stack/include/btm_api.h"
#include "stack/include/btu.h" // do_in_main_thread
#include "types/raw_address.h"
/* Codec negotiation timeout */
#ifndef BTA_AG_CODEC_NEGOTIATION_TIMEOUT_MS
#define BTA_AG_CODEC_NEGOTIATION_TIMEOUT_MS (3 * 1000) /* 3 seconds */
#endif
static bool sco_allowed = true;
static RawAddress active_device_addr = {};
/* sco events */
enum {
BTA_AG_SCO_LISTEN_E, /* listen request */
BTA_AG_SCO_OPEN_E, /* open request */
BTA_AG_SCO_XFER_E, /* transfer request */
BTA_AG_SCO_CN_DONE_E, /* codec negotiation done */
BTA_AG_SCO_REOPEN_E, /* Retry with other codec when failed */
BTA_AG_SCO_CLOSE_E, /* close request */
BTA_AG_SCO_SHUTDOWN_E, /* shutdown request */
BTA_AG_SCO_CONN_OPEN_E, /* sco open */
BTA_AG_SCO_CONN_CLOSE_E, /* sco closed */
};
#define CASE_RETURN_STR(const) \
case const: \
return #const;
static const char* bta_ag_sco_evt_str(uint8_t event) {
switch (event) {
CASE_RETURN_STR(BTA_AG_SCO_LISTEN_E)
CASE_RETURN_STR(BTA_AG_SCO_OPEN_E)
CASE_RETURN_STR(BTA_AG_SCO_XFER_E)
CASE_RETURN_STR(BTA_AG_SCO_CN_DONE_E)
CASE_RETURN_STR(BTA_AG_SCO_REOPEN_E)
CASE_RETURN_STR(BTA_AG_SCO_CLOSE_E)
CASE_RETURN_STR(BTA_AG_SCO_SHUTDOWN_E)
CASE_RETURN_STR(BTA_AG_SCO_CONN_OPEN_E)
CASE_RETURN_STR(BTA_AG_SCO_CONN_CLOSE_E)
default:
return "Unknown SCO Event";
}
}
static const char* bta_ag_sco_state_str(uint8_t state) {
switch (state) {
CASE_RETURN_STR(BTA_AG_SCO_SHUTDOWN_ST)
CASE_RETURN_STR(BTA_AG_SCO_LISTEN_ST)
CASE_RETURN_STR(BTA_AG_SCO_CODEC_ST)
CASE_RETURN_STR(BTA_AG_SCO_OPENING_ST)
CASE_RETURN_STR(BTA_AG_SCO_OPEN_CL_ST)
CASE_RETURN_STR(BTA_AG_SCO_OPEN_XFER_ST)
CASE_RETURN_STR(BTA_AG_SCO_OPEN_ST)
CASE_RETURN_STR(BTA_AG_SCO_CLOSING_ST)
CASE_RETURN_STR(BTA_AG_SCO_CLOSE_OP_ST)
CASE_RETURN_STR(BTA_AG_SCO_CLOSE_XFER_ST)
CASE_RETURN_STR(BTA_AG_SCO_SHUTTING_ST)
default:
return "Unknown SCO State";
}
}
/**
* Check if bd_addr is the current active device.
*
* @param bd_addr target device address
* @return True if bd_addr is the current active device, False otherwise or if
* no active device is set (i.e. active_device_addr is empty)
*/
bool bta_ag_sco_is_active_device(const RawAddress& bd_addr) {
return !active_device_addr.IsEmpty() && active_device_addr == bd_addr;
}
static void bta_ag_create_pending_sco(tBTA_AG_SCB* p_scb, bool is_local);
/*******************************************************************************
*
* Function bta_ag_sco_conn_cback
*
* Description BTM SCO connection callback.
*
*
* Returns void
*
******************************************************************************/
static void bta_ag_sco_conn_cback(uint16_t sco_idx) {
uint16_t handle;
tBTA_AG_SCB* p_scb;
/* match callback to scb; first check current sco scb */
if (bta_ag_cb.sco.p_curr_scb != nullptr && bta_ag_cb.sco.p_curr_scb->in_use) {
handle = bta_ag_scb_to_idx(bta_ag_cb.sco.p_curr_scb);
}
/* then check for scb connected to this peer */
else {
/* Check if SLC is up */
handle = bta_ag_idx_by_bdaddr(BTM_ReadScoBdAddr(sco_idx));
p_scb = bta_ag_scb_by_idx(handle);
if (p_scb && !p_scb->svc_conn) handle = 0;
}
if (handle != 0) {
do_in_main_thread(FROM_HERE,
base::Bind(&bta_ag_sm_execute_by_handle, handle,
BTA_AG_SCO_OPEN_EVT, tBTA_AG_DATA::kEmpty));
} else {
/* no match found; disconnect sco, init sco variables */
bta_ag_cb.sco.p_curr_scb = nullptr;
bta_ag_cb.sco.state = BTA_AG_SCO_SHUTDOWN_ST;
BTM_RemoveSco(sco_idx);
}
}
/*******************************************************************************
*
* Function bta_ag_sco_disc_cback
*
* Description BTM SCO disconnection callback.
*
*
* Returns void
*
******************************************************************************/
static void bta_ag_sco_disc_cback(uint16_t sco_idx) {
uint16_t handle = 0;
LOG_DEBUG(
"sco_idx: 0x%x sco.state:%s", sco_idx,
sco_state_text(static_cast<tSCO_STATE>(bta_ag_cb.sco.state)).c_str());
LOG_DEBUG(
" scb[0] in_use:%s sco_idx: 0x%x sco state:%s",
logbool(bta_ag_cb.scb[0].in_use).c_str(), bta_ag_cb.scb[0].sco_idx,
sco_state_text(static_cast<tSCO_STATE>(bta_ag_cb.scb[0].state)).c_str());
LOG_DEBUG(
" scb[1] in_use:%s sco_idx:0x%x sco state:%s",
logbool(bta_ag_cb.scb[1].in_use).c_str(), bta_ag_cb.scb[1].sco_idx,
sco_state_text(static_cast<tSCO_STATE>(bta_ag_cb.scb[1].state)).c_str());
/* match callback to scb */
if (bta_ag_cb.sco.p_curr_scb != nullptr && bta_ag_cb.sco.p_curr_scb->in_use) {
/* We only care about callbacks for the active SCO */
if (bta_ag_cb.sco.p_curr_scb->sco_idx != sco_idx) {
if (bta_ag_cb.sco.p_curr_scb->sco_idx != 0xFFFF) return;
}
handle = bta_ag_scb_to_idx(bta_ag_cb.sco.p_curr_scb);
}
if (handle != 0) {
/* Restore settings */
if (bta_ag_cb.sco.p_curr_scb->inuse_codec == BTA_AG_CODEC_MSBC) {
/* Bypass vendor specific and voice settings if enhanced eSCO supported */
if (!(controller_get_interface()
->supports_enhanced_setup_synchronous_connection())) {
BTM_WriteVoiceSettings(BTM_VOICE_SETTING_CVSD);
}
/* If SCO open was initiated by AG and failed for mSBC T2, try mSBC T1
* 'Safe setting' first. If T1 also fails, try CVSD */
if (bta_ag_sco_is_opening(bta_ag_cb.sco.p_curr_scb)) {
bta_ag_cb.sco.p_curr_scb->state = BTA_AG_SCO_CODEC_ST;
if (bta_ag_cb.sco.p_curr_scb->codec_msbc_settings ==
BTA_AG_SCO_MSBC_SETTINGS_T2) {
APPL_TRACE_WARNING(
"%s: eSCO/SCO failed to open, falling back to mSBC T1 settings",
__func__);
bta_ag_cb.sco.p_curr_scb->codec_msbc_settings =
BTA_AG_SCO_MSBC_SETTINGS_T1;
} else {
APPL_TRACE_WARNING(
"%s: eSCO/SCO failed to open, falling back to CVSD", __func__);
bta_ag_cb.sco.p_curr_scb->codec_fallback = true;
}
}
} else if (bta_ag_sco_is_opening(bta_ag_cb.sco.p_curr_scb)) {
APPL_TRACE_ERROR("%s: eSCO/SCO failed to open, no more fall back",
__func__);
}
bta_ag_cb.sco.p_curr_scb->inuse_codec = BTA_AG_CODEC_NONE;
do_in_main_thread(FROM_HERE,
base::Bind(&bta_ag_sm_execute_by_handle, handle,
BTA_AG_SCO_CLOSE_EVT, tBTA_AG_DATA::kEmpty));
} else {
/* no match found */
APPL_TRACE_DEBUG("no scb for ag_sco_disc_cback");
/* sco could be closed after scb dealloc'ed */
if (bta_ag_cb.sco.p_curr_scb != nullptr) {
bta_ag_cb.sco.p_curr_scb->sco_idx = BTM_INVALID_SCO_INDEX;
bta_ag_cb.sco.p_curr_scb = nullptr;
bta_ag_cb.sco.state = BTA_AG_SCO_SHUTDOWN_ST;
}
}
}
/*******************************************************************************
*
* Function bta_ag_remove_sco
*
* Description Removes the specified SCO from the system.
* If only_active is true, then SCO is only removed if
* connected
*
* Returns bool - true if SCO removal was started
*
******************************************************************************/
static bool bta_ag_remove_sco(tBTA_AG_SCB* p_scb, bool only_active) {
if (p_scb->sco_idx != BTM_INVALID_SCO_INDEX) {
if (!only_active || p_scb->sco_idx == bta_ag_cb.sco.cur_idx) {
tBTM_STATUS status = BTM_RemoveSco(p_scb->sco_idx);
LOG_DEBUG("Removed SCO index:0x%04x status:%s", p_scb->sco_idx,
btm_status_text(status).c_str());
if (status == BTM_CMD_STARTED) {
/* SCO is connected; set current control block */
bta_ag_cb.sco.p_curr_scb = p_scb;
return true;
} else if ((status == BTM_SUCCESS) || (status == BTM_UNKNOWN_ADDR)) {
/* If no connection reset the SCO handle */
p_scb->sco_idx = BTM_INVALID_SCO_INDEX;
}
}
}
return false;
}
/*******************************************************************************
*
* Function bta_ag_esco_connreq_cback
*
* Description BTM eSCO connection requests and eSCO change requests
* Only the connection requests are processed by BTA.
*
* Returns void
*
******************************************************************************/
static void bta_ag_esco_connreq_cback(tBTM_ESCO_EVT event,
tBTM_ESCO_EVT_DATA* p_data) {
/* Only process connection requests */
if (event == BTM_ESCO_CONN_REQ_EVT) {
uint16_t sco_inx = p_data->conn_evt.sco_inx;
const RawAddress* remote_bda = BTM_ReadScoBdAddr(sco_inx);
tBTA_AG_SCB* p_scb = bta_ag_scb_by_idx(bta_ag_idx_by_bdaddr(remote_bda));
if (remote_bda && bta_ag_sco_is_active_device(*remote_bda) && p_scb &&
p_scb->svc_conn) {
p_scb->sco_idx = sco_inx;
/* If no other SCO active, allow this one */
if (!bta_ag_cb.sco.p_curr_scb) {
APPL_TRACE_EVENT("%s: Accept Conn Request (sco_inx 0x%04x)", __func__,
sco_inx);
bta_ag_sco_conn_rsp(p_scb, &p_data->conn_evt);
bta_ag_cb.sco.state = BTA_AG_SCO_OPENING_ST;
bta_ag_cb.sco.p_curr_scb = p_scb;
bta_ag_cb.sco.cur_idx = p_scb->sco_idx;
} else {
/* Begin a transfer: Close current SCO before responding */
APPL_TRACE_DEBUG("bta_ag_esco_connreq_cback: Begin XFER");
bta_ag_cb.sco.p_xfer_scb = p_scb;
bta_ag_cb.sco.conn_data = p_data->conn_evt;
bta_ag_cb.sco.state = BTA_AG_SCO_OPEN_XFER_ST;
if (!bta_ag_remove_sco(bta_ag_cb.sco.p_curr_scb, true)) {
APPL_TRACE_ERROR(
"%s: Nothing to remove,so accept Conn Request(sco_inx 0x%04x)",
__func__, sco_inx);
bta_ag_cb.sco.p_xfer_scb = nullptr;
bta_ag_cb.sco.state = BTA_AG_SCO_LISTEN_ST;
bta_ag_sco_conn_rsp(p_scb, &p_data->conn_evt);
}
}
} else {
LOG(WARNING) << __func__
<< ": reject incoming SCO connection, remote_bda="
<< (remote_bda ? *remote_bda : RawAddress::kEmpty)
<< ", active_bda=" << active_device_addr << ", current_bda="
<< (p_scb ? p_scb->peer_addr : RawAddress::kEmpty);
BTM_EScoConnRsp(p_data->conn_evt.sco_inx, HCI_ERR_HOST_REJECT_RESOURCES,
(enh_esco_params_t*)nullptr);
}
} else if (event == BTM_ESCO_CHG_EVT) {
/* Received a change in the esco link */
APPL_TRACE_EVENT(
"%s: eSCO change event (inx %d): rtrans %d, "
"rxlen %d, txlen %d, txint %d",
__func__, p_data->chg_evt.sco_inx, p_data->chg_evt.retrans_window,
p_data->chg_evt.rx_pkt_len, p_data->chg_evt.tx_pkt_len,
p_data->chg_evt.tx_interval);
}
}
/*******************************************************************************
*
* Function bta_ag_cback_sco
*
* Description Call application callback function with SCO event.
*
*
* Returns void
*
******************************************************************************/
static void bta_ag_cback_sco(tBTA_AG_SCB* p_scb, tBTA_AG_EVT event) {
tBTA_AG_HDR sco = {};
sco.handle = bta_ag_scb_to_idx(p_scb);
sco.app_id = p_scb->app_id;
/* call close cback */
(*bta_ag_cb.p_cback)(static_cast<tBTA_AG_EVT>(event), (tBTA_AG*)&sco);
}
/*******************************************************************************
*
* Function bta_ag_create_sco
*
* Description Create a SCO connection for a given control block
* p_scb : Pointer to the target AG control block
* is_orig : Whether to initiate or listen for SCO connection
*
* Returns void
*
******************************************************************************/
static void bta_ag_create_sco(tBTA_AG_SCB* p_scb, bool is_orig) {
LOG_DEBUG("BEFORE %s", p_scb->ToString().c_str());
tBTA_AG_PEER_CODEC esco_codec = BTA_AG_CODEC_CVSD;
if (!bta_ag_sco_is_active_device(p_scb->peer_addr)) {
LOG(WARNING) << __func__ << ": device " << p_scb->peer_addr
<< " is not active, active_device=" << active_device_addr;
if (bta_ag_cb.sco.p_curr_scb != nullptr &&
bta_ag_cb.sco.p_curr_scb->in_use && p_scb == bta_ag_cb.sco.p_curr_scb) {
do_in_main_thread(
FROM_HERE, base::Bind(&bta_ag_sm_execute, p_scb, BTA_AG_SCO_CLOSE_EVT,
tBTA_AG_DATA::kEmpty));
}
return;
}
/* Make sure this SCO handle is not already in use */
if (p_scb->sco_idx != BTM_INVALID_SCO_INDEX) {
APPL_TRACE_ERROR("%s: device %s, index 0x%04x already in use!", __func__,
p_scb->peer_addr.ToString().c_str(), p_scb->sco_idx);
return;
}
#if (DISABLE_WBS == FALSE)
if ((p_scb->sco_codec == BTA_AG_CODEC_MSBC) && !p_scb->codec_fallback)
esco_codec = BTA_AG_CODEC_MSBC;
#endif
if (p_scb->codec_fallback) {
p_scb->codec_fallback = false;
/* Force AG to send +BCS for the next audio connection. */
p_scb->codec_updated = true;
/* Reset mSBC settings to T2 for the next audio connection */
p_scb->codec_msbc_settings = BTA_AG_SCO_MSBC_SETTINGS_T2;
}
/* Initialize eSCO parameters */
enh_esco_params_t params = {};
/* If WBS included, use CVSD by default, index is 0 for CVSD by
* initialization. If eSCO codec is mSBC, index is T2 or T1 */
if (esco_codec == BTA_AG_CODEC_MSBC) {
if (p_scb->codec_msbc_settings == BTA_AG_SCO_MSBC_SETTINGS_T2) {
params = esco_parameters_for_codec(ESCO_CODEC_MSBC_T2);
} else {
params = esco_parameters_for_codec(ESCO_CODEC_MSBC_T1);
}
} else {
if (p_scb->features & BTA_AG_PEER_FEAT_ESCO_S4 &&
(p_scb->peer_features & BTA_AG_PEER_FEAT_ESCO_S4)) {
// HFP >=1.7 eSCO
params = esco_parameters_for_codec(ESCO_CODEC_CVSD_S4);
} else {
// HFP <=1.6 eSCO
params = esco_parameters_for_codec(ESCO_CODEC_CVSD_S3);
}
}
/* If initiating, setup parameters to start SCO/eSCO connection */
if (is_orig) {
bta_ag_cb.sco.is_local = true;
/* Set eSCO Mode */
BTM_SetEScoMode(&params);
bta_ag_cb.sco.p_curr_scb = p_scb;
/* save the current codec as sco_codec can be updated while SCO is open. */
p_scb->inuse_codec = esco_codec;
/* tell sys to stop av if any */
bta_sys_sco_use(BTA_ID_AG, p_scb->app_id, p_scb->peer_addr);
/* Send pending commands to create SCO connection to peer */
bta_ag_create_pending_sco(p_scb, bta_ag_cb.sco.is_local);
LOG_DEBUG("Initiating AG SCO inx 0x%04x, pkt types 0x%04x", p_scb->sco_idx,
params.packet_types);
} else {
/* Not initiating, go to listen mode */
tBTM_STATUS btm_status = BTM_CreateSco(
&p_scb->peer_addr, false, params.packet_types, &p_scb->sco_idx,
bta_ag_sco_conn_cback, bta_ag_sco_disc_cback);
if (btm_status == BTM_CMD_STARTED) {
BTM_RegForEScoEvts(p_scb->sco_idx, bta_ag_esco_connreq_cback);
}
LOG_DEBUG("Listening AG SCO inx 0x%04x status:%s pkt types 0x%04x",
p_scb->sco_idx, btm_status_text(btm_status).c_str(),
params.packet_types);
}
LOG_DEBUG("AFTER %s", p_scb->ToString().c_str());
}
/*******************************************************************************
*
* Function bta_ag_create_pending_sco
*
* Description This Function is called after the pre-SCO vendor setup is
* done for the BTA to continue and send the HCI Commands for
* creating/accepting SCO connection with peer based on the
* is_local parameter.
*
* Returns void
*
******************************************************************************/
static void bta_ag_create_pending_sco(tBTA_AG_SCB* p_scb, bool is_local) {
tBTA_AG_PEER_CODEC esco_codec = p_scb->inuse_codec;
enh_esco_params_t params = {};
bta_ag_cb.sco.p_curr_scb = p_scb;
bta_ag_cb.sco.cur_idx = p_scb->sco_idx;
/* Local device requested SCO connection to peer */
if (is_local) {
if (esco_codec == BTA_AG_CODEC_MSBC) {
if (p_scb->codec_msbc_settings == BTA_AG_SCO_MSBC_SETTINGS_T2) {
params = esco_parameters_for_codec(ESCO_CODEC_MSBC_T2);
} else {
params = esco_parameters_for_codec(ESCO_CODEC_MSBC_T1);
}
} else {
if (p_scb->features & BTA_AG_PEER_FEAT_ESCO_S4 &&
(p_scb->peer_features & BTA_AG_PEER_FEAT_ESCO_S4)) {
// HFP >=1.7 eSCO
params = esco_parameters_for_codec(ESCO_CODEC_CVSD_S4);
} else {
// HFP <=1.6 eSCO
params = esco_parameters_for_codec(ESCO_CODEC_CVSD_S3);
}
}
/* Bypass voice settings if enhanced SCO setup command is supported */
if (!(controller_get_interface()
->supports_enhanced_setup_synchronous_connection())) {
if (esco_codec == BTA_AG_CODEC_MSBC) {
BTM_WriteVoiceSettings(BTM_VOICE_SETTING_TRANS);
} else {
BTM_WriteVoiceSettings(BTM_VOICE_SETTING_CVSD);
}
}
if (BTM_CreateSco(&p_scb->peer_addr, true, params.packet_types,
&p_scb->sco_idx, bta_ag_sco_conn_cback,
bta_ag_sco_disc_cback) == BTM_CMD_STARTED) {
/* Initiating the connection, set the current sco handle */
bta_ag_cb.sco.cur_idx = p_scb->sco_idx;
}
APPL_TRACE_DEBUG("%s: initiated SCO connection", __func__);
} else {
// Local device accepted SCO connection from peer(HF)
// Because HF devices usually do not send AT+BAC and +BCS command,
// and there is no plan to implement corresponding command handlers,
// so we only accept CVSD connection from HF no matter what's
// requested.
if (p_scb->features & BTA_AG_PEER_FEAT_ESCO_S4 &&
(p_scb->peer_features & BTA_AG_PEER_FEAT_ESCO_S4)) {
// HFP >=1.7 eSCO
params = esco_parameters_for_codec(ESCO_CODEC_CVSD_S4);
} else {
// HFP <=1.6 eSCO
params = esco_parameters_for_codec(ESCO_CODEC_CVSD_S3);
}
BTM_EScoConnRsp(p_scb->sco_idx, HCI_SUCCESS, &params);
APPL_TRACE_DEBUG("%s: listening for SCO connection", __func__);
}
}
/*******************************************************************************
*
* Function bta_ag_codec_negotiation_timer_cback
*
* Description
*
*
* Returns void
*
******************************************************************************/
static void bta_ag_codec_negotiation_timer_cback(void* data) {
LOG_WARN("Codec negotiation timeout");
tBTA_AG_SCB* p_scb = (tBTA_AG_SCB*)data;
/* Announce that codec negotiation failed. */
bta_ag_sco_codec_nego(p_scb, false);
/* call app callback */
bta_ag_cback_sco(p_scb, BTA_AG_AUDIO_CLOSE_EVT);
}
/*******************************************************************************
*
* Function bta_ag_codec_negotiate
*
* Description Initiate codec negotiation by sending AT command.
* If not necessary, skip negotiation.
*
* Returns void
*
******************************************************************************/
void bta_ag_codec_negotiate(tBTA_AG_SCB* p_scb) {
bta_ag_cb.sco.p_curr_scb = p_scb;
uint8_t* p_rem_feat = BTM_ReadRemoteFeatures(p_scb->peer_addr);
bool sdp_wbs_support = p_scb->peer_sdp_features & BTA_AG_FEAT_WBS_SUPPORT;
if (p_rem_feat == nullptr) {
LOG_WARN("Skip codec negotiation, failed to read remote features");
bta_ag_sco_codec_nego(p_scb, false);
return;
}
// Workaround for misbehaving HFs, which indicate which one is not support on
// Transparent Synchronous Data in Remote Supported Features, WBS in SDP and
// and Codec Negotiation in BRSF. Fluoride will assume CVSD codec by default.
// In Sony XAV AX100 car kit and Sony MW600 Headset case, which indicate
// Transparent Synchronous Data and WBS support, but no codec negotiation
// support, using mSBC codec can result background noise or no audio.
// In Skullcandy JIB case, which indicate WBS and codec negotiation support,
// but no Transparent Synchronous Data support, using mSBC codec can result
// SCO setup fail by Firmware reject.
if (!HCI_LMP_TRANSPNT_SUPPORTED(p_rem_feat) || !sdp_wbs_support ||
!(p_scb->peer_features & BTA_AG_PEER_FEAT_CODEC)) {
LOG_INFO("Assume CVSD by default due to mask mismatch");
p_scb->sco_codec = UUID_CODEC_CVSD;
}
if ((p_scb->codec_updated || p_scb->codec_fallback) &&
(p_scb->peer_features & BTA_AG_PEER_FEAT_CODEC)) {
LOG_INFO("Starting codec negotiation");
/* Change the power mode to Active until SCO open is completed. */
bta_sys_busy(BTA_ID_AG, p_scb->app_id, p_scb->peer_addr);
/* Send +BCS to the peer */
bta_ag_send_bcs(p_scb);
/* Start timer to handle timeout */
alarm_set_on_mloop(p_scb->codec_negotiation_timer,
BTA_AG_CODEC_NEGOTIATION_TIMEOUT_MS,
bta_ag_codec_negotiation_timer_cback, p_scb);
} else {
/* use same codec type as previous SCO connection, skip codec negotiation */
LOG_INFO("Skip codec negotiation, using the same codec");
bta_ag_sco_codec_nego(p_scb, true);
}
}
static void bta_ag_sco_event(tBTA_AG_SCB* p_scb, uint8_t event) {
tBTA_AG_SCO_CB* p_sco = &bta_ag_cb.sco;
uint8_t previous_state = p_sco->state;
LOG_INFO("device:%s index:0x%04x state:%s[%d] event:%s[%d]",
PRIVATE_ADDRESS(p_scb->peer_addr), p_scb->sco_idx,
bta_ag_sco_state_str(p_sco->state), p_sco->state,
bta_ag_sco_evt_str(event), event);
switch (p_sco->state) {
case BTA_AG_SCO_SHUTDOWN_ST:
switch (event) {
case BTA_AG_SCO_LISTEN_E:
/* create sco listen connection */
bta_ag_create_sco(p_scb, false);
p_sco->state = BTA_AG_SCO_LISTEN_ST;
break;
default:
LOG_WARN("BTA_AG_SCO_SHUTDOWN_ST: Ignoring event %s[%d]",
bta_ag_sco_evt_str(event), event);
break;
}
break;
case BTA_AG_SCO_LISTEN_ST:
switch (event) {
case BTA_AG_SCO_LISTEN_E:
/* create sco listen connection (Additional channel) */
bta_ag_create_sco(p_scb, false);
break;
case BTA_AG_SCO_OPEN_E:
/* remove listening connection */
bta_ag_remove_sco(p_scb, false);
#if (DISABLE_WBS == FALSE)
/* start codec negotiation */
p_sco->state = BTA_AG_SCO_CODEC_ST;
bta_ag_codec_negotiate(p_scb);
#else
bta_ag_create_sco(p_scb, true);
p_sco->state = BTA_AG_SCO_OPENING_ST;
#endif
break;
case BTA_AG_SCO_SHUTDOWN_E:
/* remove listening connection */
bta_ag_remove_sco(p_scb, false);
if (p_scb == p_sco->p_curr_scb) p_sco->p_curr_scb = nullptr;
/* If last SCO instance then finish shutting down */
if (!bta_ag_other_scb_open(p_scb)) {
p_sco->state = BTA_AG_SCO_SHUTDOWN_ST;
}
break;
case BTA_AG_SCO_CLOSE_E:
/* remove listening connection */
/* Ignore the event. Keep listening SCO for the active SLC */
LOG_WARN("BTA_AG_SCO_LISTEN_ST: Ignoring event %s[%d]",
bta_ag_sco_evt_str(event), event);
break;
case BTA_AG_SCO_CONN_CLOSE_E:
/* sco failed; create sco listen connection */
bta_ag_create_sco(p_scb, false);
p_sco->state = BTA_AG_SCO_LISTEN_ST;
break;
default:
LOG_WARN("BTA_AG_SCO_LISTEN_ST: Ignoring event %s[%d]",
bta_ag_sco_evt_str(event), event);
break;
}
break;
case BTA_AG_SCO_CODEC_ST:
switch (event) {
case BTA_AG_SCO_LISTEN_E:
/* create sco listen connection (Additional channel) */
bta_ag_create_sco(p_scb, false);
break;
case BTA_AG_SCO_CN_DONE_E:
/* create sco connection to peer */
bta_ag_create_sco(p_scb, true);
p_sco->state = BTA_AG_SCO_OPENING_ST;
break;
case BTA_AG_SCO_XFER_E:
/* save xfer scb */
p_sco->p_xfer_scb = p_scb;
p_sco->state = BTA_AG_SCO_CLOSE_XFER_ST;
break;
case BTA_AG_SCO_SHUTDOWN_E:
/* remove listening connection */
bta_ag_remove_sco(p_scb, false);
if (p_scb == p_sco->p_curr_scb) p_sco->p_curr_scb = nullptr;
/* If last SCO instance then finish shutting down */
if (!bta_ag_other_scb_open(p_scb)) {
p_sco->state = BTA_AG_SCO_SHUTDOWN_ST;
}
break;
case BTA_AG_SCO_CLOSE_E:
/* sco open is not started yet. just go back to listening */
p_sco->state = BTA_AG_SCO_LISTEN_ST;
break;
case BTA_AG_SCO_CONN_CLOSE_E:
/* sco failed; create sco listen connection */
bta_ag_create_sco(p_scb, false);
p_sco->state = BTA_AG_SCO_LISTEN_ST;
break;
default:
LOG_WARN("BTA_AG_SCO_CODEC_ST: Ignoring event %s[%d]",
bta_ag_sco_evt_str(event), event);
break;
}
break;
case BTA_AG_SCO_OPENING_ST:
switch (event) {
case BTA_AG_SCO_LISTEN_E:
/* second headset has now joined */
/* create sco listen connection (Additional channel) */
if (p_scb != p_sco->p_curr_scb) {
bta_ag_create_sco(p_scb, false);
}
break;
#if (DISABLE_WBS == FALSE)
case BTA_AG_SCO_REOPEN_E:
/* start codec negotiation */
p_sco->state = BTA_AG_SCO_CODEC_ST;
bta_ag_codec_negotiate(p_scb);
break;
#endif
case BTA_AG_SCO_XFER_E:
/* save xfer scb */
p_sco->p_xfer_scb = p_scb;
p_sco->state = BTA_AG_SCO_CLOSE_XFER_ST;
break;
case BTA_AG_SCO_CLOSE_E:
p_sco->state = BTA_AG_SCO_OPEN_CL_ST;
break;
case BTA_AG_SCO_SHUTDOWN_E:
/* If not opening scb, just close it */
if (p_scb != p_sco->p_curr_scb) {
/* remove listening connection */
bta_ag_remove_sco(p_scb, false);
} else
p_sco->state = BTA_AG_SCO_SHUTTING_ST;
break;
case BTA_AG_SCO_CONN_OPEN_E:
p_sco->state = BTA_AG_SCO_OPEN_ST;
break;
case BTA_AG_SCO_CONN_CLOSE_E:
/* sco failed; create sco listen connection */
bta_ag_create_sco(p_scb, false);
p_sco->state = BTA_AG_SCO_LISTEN_ST;
break;
default:
LOG_WARN("BTA_AG_SCO_OPENING_ST: Ignoring event %s[%d]",
bta_ag_sco_evt_str(event), event);
break;
}
break;
case BTA_AG_SCO_OPEN_CL_ST:
switch (event) {
case BTA_AG_SCO_XFER_E:
/* save xfer scb */
p_sco->p_xfer_scb = p_scb;
p_sco->state = BTA_AG_SCO_CLOSE_XFER_ST;
break;
case BTA_AG_SCO_OPEN_E:
p_sco->state = BTA_AG_SCO_OPENING_ST;
break;
case BTA_AG_SCO_SHUTDOWN_E:
/* If not opening scb, just close it */
if (p_scb != p_sco->p_curr_scb) {
/* remove listening connection */
bta_ag_remove_sco(p_scb, false);
} else
p_sco->state = BTA_AG_SCO_SHUTTING_ST;
break;
case BTA_AG_SCO_CONN_OPEN_E:
/* close sco connection */
bta_ag_remove_sco(p_scb, true);
p_sco->state = BTA_AG_SCO_CLOSING_ST;
break;
case BTA_AG_SCO_CONN_CLOSE_E:
/* sco failed; create sco listen connection */
p_sco->state = BTA_AG_SCO_LISTEN_ST;
break;
default:
LOG_WARN("BTA_AG_SCO_OPEN_CL_ST: Ignoring event %s[%d]",
bta_ag_sco_evt_str(event), event);
break;
}
break;
case BTA_AG_SCO_OPEN_XFER_ST:
switch (event) {
case BTA_AG_SCO_CLOSE_E:
/* close sco connection */
bta_ag_remove_sco(p_scb, true);
p_sco->state = BTA_AG_SCO_CLOSING_ST;
break;
case BTA_AG_SCO_SHUTDOWN_E:
/* remove all connection */
bta_ag_remove_sco(p_scb, false);
p_sco->state = BTA_AG_SCO_SHUTTING_ST;
break;
case BTA_AG_SCO_CONN_CLOSE_E:
/* closed sco; place in listen mode and
accept the transferred connection */
bta_ag_create_sco(p_scb, false); /* Back into listen mode */
/* Accept sco connection with xfer scb */
bta_ag_sco_conn_rsp(p_sco->p_xfer_scb, &p_sco->conn_data);
p_sco->state = BTA_AG_SCO_OPENING_ST;
p_sco->p_curr_scb = p_sco->p_xfer_scb;
p_sco->cur_idx = p_sco->p_xfer_scb->sco_idx;
p_sco->p_xfer_scb = nullptr;
break;
default:
LOG_WARN("BTA_AG_SCO_OPEN_XFER_ST: Ignoring event %s[%d]",
bta_ag_sco_evt_str(event), event);
break;
}
break;
case BTA_AG_SCO_OPEN_ST:
switch (event) {
case BTA_AG_SCO_LISTEN_E:
/* second headset has now joined */
/* create sco listen connection (Additional channel) */
if (p_scb != p_sco->p_curr_scb) {
bta_ag_create_sco(p_scb, false);
}
break;
case BTA_AG_SCO_XFER_E:
/* close current sco connection */
bta_ag_remove_sco(p_sco->p_curr_scb, true);
/* save xfer scb */
p_sco->p_xfer_scb = p_scb;
p_sco->state = BTA_AG_SCO_CLOSE_XFER_ST;
break;
case BTA_AG_SCO_CLOSE_E:
/* close sco connection if active */
if (bta_ag_remove_sco(p_scb, true)) {
p_sco->state = BTA_AG_SCO_CLOSING_ST;
}
break;
case BTA_AG_SCO_SHUTDOWN_E:
/* remove all listening connections */
bta_ag_remove_sco(p_scb, false);
/* If SCO was active on this scb, close it */
if (p_scb == p_sco->p_curr_scb) {
p_sco->state = BTA_AG_SCO_SHUTTING_ST;
}
break;
case BTA_AG_SCO_CONN_CLOSE_E:
/* peer closed sco; create sco listen connection */
bta_ag_create_sco(p_scb, false);
p_sco->state = BTA_AG_SCO_LISTEN_ST;
break;
default:
LOG_WARN("BTA_AG_SCO_OPEN_ST: Ignoring event %s[%d]",
bta_ag_sco_evt_str(event), event);
break;
}
break;
case BTA_AG_SCO_CLOSING_ST:
switch (event) {
case BTA_AG_SCO_LISTEN_E:
/* create sco listen connection (Additional channel) */
if (p_scb != p_sco->p_curr_scb) {
bta_ag_create_sco(p_scb, false);
}
break;
case BTA_AG_SCO_OPEN_E:
p_sco->state = BTA_AG_SCO_CLOSE_OP_ST;
break;
case BTA_AG_SCO_XFER_E:
/* save xfer scb */
p_sco->p_xfer_scb = p_scb;
p_sco->state = BTA_AG_SCO_CLOSE_XFER_ST;
break;
case BTA_AG_SCO_SHUTDOWN_E:
/* If not closing scb, just close it */
if (p_scb != p_sco->p_curr_scb) {
/* remove listening connection */
bta_ag_remove_sco(p_scb, false);
} else
p_sco->state = BTA_AG_SCO_SHUTTING_ST;
break;
case BTA_AG_SCO_CONN_CLOSE_E:
/* peer closed sco; create sco listen connection */
bta_ag_create_sco(p_scb, false);
p_sco->state = BTA_AG_SCO_LISTEN_ST;
break;
default:
LOG_WARN("BTA_AG_SCO_CLOSING_ST: Ignoring event %s[%d]",
bta_ag_sco_evt_str(event), event);
break;
}
break;
case BTA_AG_SCO_CLOSE_OP_ST:
switch (event) {
case BTA_AG_SCO_CLOSE_E:
p_sco->state = BTA_AG_SCO_CLOSING_ST;
break;
case BTA_AG_SCO_SHUTDOWN_E:
p_sco->state = BTA_AG_SCO_SHUTTING_ST;
break;
case BTA_AG_SCO_CONN_CLOSE_E:
/* start codec negotiation */
p_sco->state = BTA_AG_SCO_CODEC_ST;
bta_ag_codec_negotiate(p_scb);
break;
case BTA_AG_SCO_LISTEN_E:
/* create sco listen connection (Additional channel) */
if (p_scb != p_sco->p_curr_scb) {
bta_ag_create_sco(p_scb, false);
}
break;
default:
LOG_WARN("BTA_AG_SCO_CLOSE_OP_ST: Ignoring event %s[%d]",
bta_ag_sco_evt_str(event), event);
break;
}
break;
case BTA_AG_SCO_CLOSE_XFER_ST:
switch (event) {
case BTA_AG_SCO_CONN_OPEN_E:
/* close sco connection so headset can be transferred
Probably entered this state from "opening state" */
bta_ag_remove_sco(p_scb, true);
break;
case BTA_AG_SCO_CLOSE_E:
/* clear xfer scb */
p_sco->p_xfer_scb = nullptr;
p_sco->state = BTA_AG_SCO_CLOSING_ST;
break;
case BTA_AG_SCO_SHUTDOWN_E:
/* clear xfer scb */
p_sco->p_xfer_scb = nullptr;
p_sco->state = BTA_AG_SCO_SHUTTING_ST;
break;
case BTA_AG_SCO_CONN_CLOSE_E: {
/* closed sco; place old sco in listen mode,
take current sco out of listen, and
create originating sco for current */
bta_ag_create_sco(p_scb, false);
bta_ag_remove_sco(p_sco->p_xfer_scb, false);
#if (DISABLE_WBS == FALSE)
/* start codec negotiation */
p_sco->state = BTA_AG_SCO_CODEC_ST;
tBTA_AG_SCB* p_cn_scb = p_sco->p_xfer_scb;
p_sco->p_xfer_scb = nullptr;
bta_ag_codec_negotiate(p_cn_scb);
#else
/* create sco connection to peer */
bta_ag_create_sco(p_sco->p_xfer_scb, true);
p_sco->p_xfer_scb = nullptr;
p_sco->state = BTA_AG_SCO_OPENING_ST;
#endif
break;
}
default:
LOG_WARN(" BTA_AG_SCO_CLOSE_XFER_ST: Ignoring event %s[%d]",
bta_ag_sco_evt_str(event), event);
break;
}
break;
case BTA_AG_SCO_SHUTTING_ST:
switch (event) {
case BTA_AG_SCO_CONN_OPEN_E:
/* close sco connection; wait for conn close event */
bta_ag_remove_sco(p_scb, true);
break;
case BTA_AG_SCO_CONN_CLOSE_E:
/* If last SCO instance then finish shutting down */
if (!bta_ag_other_scb_open(p_scb)) {
p_sco->state = BTA_AG_SCO_SHUTDOWN_ST;
} else /* Other instance is still listening */
{
p_sco->state = BTA_AG_SCO_LISTEN_ST;
}
/* If SCO closed for other HS which is not being disconnected,
then create listen sco connection for it as scb still open */
if (bta_ag_scb_open(p_scb)) {
bta_ag_create_sco(p_scb, false);
p_sco->state = BTA_AG_SCO_LISTEN_ST;
}
if (p_scb == p_sco->p_curr_scb) {
p_sco->p_curr_scb->sco_idx = BTM_INVALID_SCO_INDEX;
p_sco->p_curr_scb = nullptr;
}
break;
case BTA_AG_SCO_LISTEN_E:
/* create sco listen connection (Additional channel) */
if (p_scb != p_sco->p_curr_scb) {
bta_ag_create_sco(p_scb, false);
}
break;
case BTA_AG_SCO_SHUTDOWN_E:
if (!bta_ag_other_scb_open(p_scb)) {
p_sco->state = BTA_AG_SCO_SHUTDOWN_ST;
} else /* Other instance is still listening */
{
p_sco->state = BTA_AG_SCO_LISTEN_ST;
}
if (p_scb == p_sco->p_curr_scb) {
p_sco->p_curr_scb->sco_idx = BTM_INVALID_SCO_INDEX;
p_sco->p_curr_scb = nullptr;
}
break;
default:
LOG_WARN("BTA_AG_SCO_SHUTTING_ST: Ignoring event %s[%d]",
bta_ag_sco_evt_str(event), event);
break;
}
break;
default:
break;
}
if (p_sco->state != previous_state) {
LOG_WARN(
"SCO_state_change: [%s(0x%02x)]->[%s(0x%02x)] "
"after event [%s(0x%02x)]",
bta_ag_sco_state_str(previous_state), previous_state,
bta_ag_sco_state_str(p_sco->state), p_sco->state,
bta_ag_sco_evt_str(event), event);
}
}
/*******************************************************************************
*
* Function bta_ag_sco_is_open
*
* Description Check if sco is open for this scb.
*
*
* Returns true if sco open for this scb, false otherwise.
*
******************************************************************************/
bool bta_ag_sco_is_open(tBTA_AG_SCB* p_scb) {
return ((bta_ag_cb.sco.state == BTA_AG_SCO_OPEN_ST) &&
(bta_ag_cb.sco.p_curr_scb == p_scb));
}
/*******************************************************************************
*
* Function bta_ag_sco_is_opening
*
* Description Check if sco is in Opening state.
*
*
* Returns true if sco is in Opening state for this scb, false
* otherwise.
*
******************************************************************************/
bool bta_ag_sco_is_opening(tBTA_AG_SCB* p_scb) {
return ((bta_ag_cb.sco.state == BTA_AG_SCO_OPENING_ST) &&
(bta_ag_cb.sco.p_curr_scb == p_scb));
}
/*******************************************************************************
*
* Function bta_ag_sco_listen
*
* Description
*
*
* Returns void
*
******************************************************************************/
void bta_ag_sco_listen(tBTA_AG_SCB* p_scb,
UNUSED_ATTR const tBTA_AG_DATA& data) {
LOG(INFO) << __func__ << ": " << p_scb->peer_addr;
bta_ag_sco_event(p_scb, BTA_AG_SCO_LISTEN_E);
}
/*******************************************************************************
*
* Function bta_ag_sco_open
*
* Description
*
*
* Returns void
*
******************************************************************************/
void bta_ag_sco_open(tBTA_AG_SCB* p_scb, UNUSED_ATTR const tBTA_AG_DATA& data) {
if (!sco_allowed) {
LOG(INFO) << __func__ << ": not opening sco, by policy";
return;
}
/* if another scb using sco, this is a transfer */
if (bta_ag_cb.sco.p_curr_scb && bta_ag_cb.sco.p_curr_scb != p_scb) {
LOG(INFO) << __func__ << ": transfer "
<< bta_ag_cb.sco.p_curr_scb->peer_addr << " -> "
<< p_scb->peer_addr;
bta_ag_sco_event(p_scb, BTA_AG_SCO_XFER_E);
} else {
/* else it is an open */
LOG(INFO) << __func__ << ": open " << p_scb->peer_addr;
bta_ag_sco_event(p_scb, BTA_AG_SCO_OPEN_E);
}
}
/*******************************************************************************
*
* Function bta_ag_sco_close
*
* Description
*
*
* Returns void
*
******************************************************************************/
void bta_ag_sco_close(tBTA_AG_SCB* p_scb,
UNUSED_ATTR const tBTA_AG_DATA& data) {
/* if scb is in use */
/* sco_idx is not allocated in SCO_CODEC_ST, still need to move to listen
* state. */
if ((p_scb->sco_idx != BTM_INVALID_SCO_INDEX) ||
(bta_ag_cb.sco.state == BTA_AG_SCO_CODEC_ST)) {
APPL_TRACE_DEBUG("bta_ag_sco_close: sco_inx = %d", p_scb->sco_idx);
bta_ag_sco_event(p_scb, BTA_AG_SCO_CLOSE_E);
}
}
/*******************************************************************************
*
* Function bta_ag_sco_codec_nego
*
* Description Handles result of eSCO codec negotiation
*
*
* Returns void
*
******************************************************************************/
void bta_ag_sco_codec_nego(tBTA_AG_SCB* p_scb, bool result) {
if (result) {
/* Subsequent SCO connection will skip codec negotiation */
LOG_INFO("Succeeded for index 0x%04x, device %s", p_scb->sco_idx,
p_scb->peer_addr.ToString().c_str());
p_scb->codec_updated = false;
bta_ag_sco_event(p_scb, BTA_AG_SCO_CN_DONE_E);
} else {
/* codec negotiation failed */
LOG_INFO("Failed for index 0x%04x, device %s", p_scb->sco_idx,
p_scb->peer_addr.ToString().c_str());
bta_ag_sco_event(p_scb, BTA_AG_SCO_CLOSE_E);
}
}
/*******************************************************************************
*
* Function bta_ag_sco_shutdown
*
* Description
*
*
* Returns void
*
******************************************************************************/
void bta_ag_sco_shutdown(tBTA_AG_SCB* p_scb,
UNUSED_ATTR const tBTA_AG_DATA& data) {
bta_ag_sco_event(p_scb, BTA_AG_SCO_SHUTDOWN_E);
}
/*******************************************************************************
*
* Function bta_ag_sco_conn_open
*
* Description
*
*
* Returns void
*
******************************************************************************/
void bta_ag_sco_conn_open(tBTA_AG_SCB* p_scb,
UNUSED_ATTR const tBTA_AG_DATA& data) {
bta_ag_sco_event(p_scb, BTA_AG_SCO_CONN_OPEN_E);
bta_sys_sco_open(BTA_ID_AG, p_scb->app_id, p_scb->peer_addr);
/* call app callback */
bta_ag_cback_sco(p_scb, BTA_AG_AUDIO_OPEN_EVT);
/* reset to mSBC T2 settings as the preferred */
p_scb->codec_msbc_settings = BTA_AG_SCO_MSBC_SETTINGS_T2;
}
/*******************************************************************************
*
* Function bta_ag_sco_conn_close
*
* Description
*
*
* Returns void
*
******************************************************************************/
void bta_ag_sco_conn_close(tBTA_AG_SCB* p_scb,
UNUSED_ATTR const tBTA_AG_DATA& data) {
/* clear current scb */
bta_ag_cb.sco.p_curr_scb = nullptr;
p_scb->sco_idx = BTM_INVALID_SCO_INDEX;
/* codec_fallback is set when AG is initiator and connection failed for mSBC.
* OR if codec is msbc and T2 settings failed, then retry Safe T1 settings */
if (p_scb->svc_conn &&
(p_scb->codec_fallback ||
(p_scb->sco_codec == BTM_SCO_CODEC_MSBC &&
p_scb->codec_msbc_settings == BTA_AG_SCO_MSBC_SETTINGS_T1))) {
bta_ag_sco_event(p_scb, BTA_AG_SCO_REOPEN_E);
} else {
/* Indicate if the closing of audio is because of transfer */
bta_ag_sco_event(p_scb, BTA_AG_SCO_CONN_CLOSE_E);
bta_sys_sco_close(BTA_ID_AG, p_scb->app_id, p_scb->peer_addr);
/* if av got suspended by this call, let it resume. */
/* In case call stays alive regardless of sco, av should not be affected. */
if (((p_scb->call_ind == BTA_AG_CALL_INACTIVE) &&
(p_scb->callsetup_ind == BTA_AG_CALLSETUP_NONE)) ||
(p_scb->post_sco == BTA_AG_POST_SCO_CALL_END)) {
bta_sys_sco_unuse(BTA_ID_AG, p_scb->app_id, p_scb->peer_addr);
}
/* call app callback */
bta_ag_cback_sco(p_scb, BTA_AG_AUDIO_CLOSE_EVT);
p_scb->codec_msbc_settings = BTA_AG_SCO_MSBC_SETTINGS_T2;
}
}
/*******************************************************************************
*
* Function bta_ag_sco_conn_rsp
*
* Description Process the SCO connection request
*
*
* Returns void
*
******************************************************************************/
void bta_ag_sco_conn_rsp(tBTA_AG_SCB* p_scb,
tBTM_ESCO_CONN_REQ_EVT_DATA* p_data) {
bta_ag_cb.sco.is_local = false;
APPL_TRACE_DEBUG("%s: eSCO %d, state %d", __func__,
controller_get_interface()
->supports_enhanced_setup_synchronous_connection(),
bta_ag_cb.sco.state);
if (bta_ag_cb.sco.state == BTA_AG_SCO_LISTEN_ST ||
bta_ag_cb.sco.state == BTA_AG_SCO_CLOSE_XFER_ST ||
bta_ag_cb.sco.state == BTA_AG_SCO_OPEN_XFER_ST) {
/* tell sys to stop av if any */
bta_sys_sco_use(BTA_ID_AG, p_scb->app_id, p_scb->peer_addr);
/* When HS initiated SCO, it cannot be WBS. */
}
/* If SCO open was initiated from HS, it must be CVSD */
p_scb->inuse_codec = BTA_AG_CODEC_NONE;
/* Send pending commands to create SCO connection to peer */
bta_ag_create_pending_sco(p_scb, bta_ag_cb.sco.is_local);
}
void bta_ag_set_sco_allowed(bool value) {
sco_allowed = value;
APPL_TRACE_DEBUG(sco_allowed ? "sco now allowed" : "sco now not allowed");
}
const RawAddress& bta_ag_get_active_device() { return active_device_addr; }
void bta_clear_active_device() { active_device_addr = RawAddress::kEmpty; }
void bta_ag_api_set_active_device(const RawAddress& new_active_device) {
if (new_active_device.IsEmpty()) {
APPL_TRACE_ERROR("%s: empty device", __func__);
return;
}
active_device_addr = new_active_device;
}
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