/******************************************************************************
*
* Copyright (C) 2009-2012 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.
*
******************************************************************************/
/************************************************************************************
*
* Filename: btif_hf.c
*
* Description: Handsfree Profile Bluetooth Interface
*
*
***********************************************************************************/
#include <hardware/bluetooth.h>
#include <hardware/bt_hf.h>
#include <stdlib.h>
#define LOG_TAG "BTIF_HF"
#include "btif_common.h"
#include "btif_util.h"
#include "btif_profile_queue.h"
#include "bd.h"
#include "bta_ag_api.h"
/************************************************************************************
** Constants & Macros
************************************************************************************/
#ifndef BTIF_HSAG_SERVICE_NAME
#define BTIF_HSAG_SERVICE_NAME ("Headset Gateway")
#endif
#ifndef BTIF_HFAG_SERVICE_NAME
#define BTIF_HFAG_SERVICE_NAME ("Handsfree Gateway")
#endif
#ifndef BTIF_HF_SERVICES
#define BTIF_HF_SERVICES (BTA_HSP_SERVICE_MASK | BTA_HFP_SERVICE_MASK )
#endif
#ifndef BTIF_HF_SERVICE_NAMES
#define BTIF_HF_SERVICE_NAMES {BTIF_HSAG_SERVICE_NAME , BTIF_HFAG_SERVICE_NAME}
#endif
#ifndef BTIF_HF_SECURITY
#define BTIF_HF_SECURITY (BTA_SEC_AUTHENTICATE | BTA_SEC_ENCRYPT)
#endif
#ifndef BTIF_HF_FEATURES
#define BTIF_HF_FEATURES ( BTA_AG_FEAT_3WAY | \
BTA_AG_FEAT_ECNR | \
BTA_AG_FEAT_REJECT | \
BTA_AG_FEAT_ECS | \
BTA_AG_FEAT_EXTERR | \
BTA_AG_FEAT_BTRH | \
BTA_AG_FEAT_VREC | \
BTA_AG_FEAT_UNAT)
#endif
#define BTIF_HF_ID_1 0
#define BTIF_HF_CALL_END_TIMEOUT 6
/************************************************************************************
** Local type definitions
************************************************************************************/
/************************************************************************************
** Static variables
************************************************************************************/
static bthf_callbacks_t *bt_hf_callbacks = NULL;
#define CHECK_BTHF_INIT() if (bt_hf_callbacks == NULL)\
{\
BTIF_TRACE_WARNING1("BTHF: %s: BTHF not initialized", __FUNCTION__);\
return BT_STATUS_NOT_READY;\
}\
else\
{\
BTIF_TRACE_EVENT1("BTHF: %s", __FUNCTION__);\
}
#define CHECK_BTHF_SLC_CONNECTED() if (bt_hf_callbacks == NULL)\
{\
BTIF_TRACE_WARNING1("BTHF: %s: BTHF not initialized", __FUNCTION__);\
return BT_STATUS_NOT_READY;\
}\
else if (btif_hf_cb.state != BTHF_CONNECTION_STATE_SLC_CONNECTED)\
{\
BTIF_TRACE_WARNING2("BTHF: %s: SLC connection not up. state=%s", __FUNCTION__, dump_hf_conn_state(btif_hf_cb.state));\
return BT_STATUS_NOT_READY;\
}\
else\
{\
BTIF_TRACE_EVENT1("BTHF: %s", __FUNCTION__);\
}
/* BTIF-HF control block to map bdaddr to BTA handle */
typedef struct _btif_hf_cb
{
UINT16 handle;
bt_bdaddr_t connected_bda;
bthf_connection_state_t state;
bthf_vr_state_t vr_state;
tBTA_AG_PEER_FEAT peer_feat;
int num_active;
int num_held;
struct timespec call_end_timestamp;
bthf_call_state_t call_setup_state;
} btif_hf_cb_t;
static btif_hf_cb_t btif_hf_cb;
/************************************************************************************
** Static functions
************************************************************************************/
/************************************************************************************
** Externs
************************************************************************************/
/************************************************************************************
** Functions
************************************************************************************/
/*******************************************************************************
**
** Function is_connected
**
** Description Internal function to check if HF is connected
**
** Returns TRUE if connected
**
*******************************************************************************/
static BOOLEAN is_connected(bt_bdaddr_t *bd_addr)
{
if (((btif_hf_cb.state == BTHF_CONNECTION_STATE_CONNECTED) || (btif_hf_cb.state == BTHF_CONNECTION_STATE_SLC_CONNECTED))&&
((bd_addr == NULL) || (bdcmp(bd_addr->address, btif_hf_cb.connected_bda.address) == 0)))
return TRUE;
else
return FALSE;
}
/*******************************************************************************
**
** Function callstate_to_callsetup
**
** Description Converts HAL call state to BTA call setup indicator value
**
** Returns BTA call indicator value
**
*******************************************************************************/
static UINT8 callstate_to_callsetup(bthf_call_state_t call_state)
{
UINT8 call_setup = 0;
if (call_state == BTHF_CALL_STATE_INCOMING)
call_setup = 1;
if (call_state == BTHF_CALL_STATE_DIALING)
call_setup = 2;
if (call_state == BTHF_CALL_STATE_ALERTING)
call_setup = 3;
return call_setup;
}
/*******************************************************************************
**
** Function send_at_result
**
** Description Send AT result code (OK/ERROR)
**
** Returns void
**
*******************************************************************************/
static void send_at_result(UINT8 ok_flag, UINT16 errcode)
{
tBTA_AG_RES_DATA ag_res;
memset (&ag_res, 0, sizeof (ag_res));
ag_res.ok_flag = ok_flag;
if (ok_flag == BTA_AG_OK_ERROR)
{
ag_res.errcode = errcode;
}
BTA_AgResult (btif_hf_cb.handle, BTA_AG_UNAT_RES, &ag_res);
}
/*******************************************************************************
**
** Function send_indicator_update
**
** Description Send indicator update (CIEV)
**
** Returns void
**
*******************************************************************************/
static void send_indicator_update (UINT16 indicator, UINT16 value)
{
tBTA_AG_RES_DATA ag_res;
memset(&ag_res, 0, sizeof(tBTA_AG_RES_DATA));
ag_res.ind.id = indicator;
ag_res.ind.value = value;
BTA_AgResult(BTA_AG_HANDLE_ALL, BTA_AG_IND_RES, &ag_res);
}
void clear_phone_state()
{
btif_hf_cb.call_setup_state = BTHF_CALL_STATE_IDLE;
btif_hf_cb.num_active = btif_hf_cb.num_held = 0;
}
/*****************************************************************************
** Section name (Group of functions)
*****************************************************************************/
/*****************************************************************************
**
** btif hf api functions (no context switch)
**
*****************************************************************************/
/*******************************************************************************
**
** Function btif_hf_upstreams_evt
**
** Description Executes HF UPSTREAMS events in btif context
**
** Returns void
**
*******************************************************************************/
static void btif_hf_upstreams_evt(UINT16 event, char* p_param)
{
tBTA_AG *p_data = (tBTA_AG *)p_param;
bdstr_t bdstr;
BTIF_TRACE_DEBUG2("%s: event=%s", __FUNCTION__, dump_hf_event(event));
switch (event)
{
case BTA_AG_ENABLE_EVT:
case BTA_AG_DISABLE_EVT:
break;
case BTA_AG_REGISTER_EVT:
btif_hf_cb.handle = p_data->reg.hdr.handle;
break;
case BTA_AG_OPEN_EVT:
if (p_data->open.status == BTA_AG_SUCCESS)
{
bdcpy(btif_hf_cb.connected_bda.address, p_data->open.bd_addr);
btif_hf_cb.state = BTHF_CONNECTION_STATE_CONNECTED;
btif_hf_cb.peer_feat = 0;
clear_phone_state();
}
else if (btif_hf_cb.state == BTHF_CONNECTION_STATE_CONNECTING)
{
btif_hf_cb.state = BTHF_CONNECTION_STATE_DISCONNECTED;
}
else
{
BTIF_TRACE_WARNING4("%s: AG open failed, but another device connected. status=%d state=%d connected device=%s",
__FUNCTION__, p_data->open.status, btif_hf_cb.state, bd2str(&btif_hf_cb.connected_bda, &bdstr));
break;
}
HAL_CBACK(bt_hf_callbacks, connection_state_cb, btif_hf_cb.state, &btif_hf_cb.connected_bda);
if (btif_hf_cb.state == BTHF_CONNECTION_STATE_DISCONNECTED)
bdsetany(btif_hf_cb.connected_bda.address);
if (p_data->open.status != BTA_AG_SUCCESS)
btif_queue_advance();
break;
case BTA_AG_CLOSE_EVT:
btif_hf_cb.state = BTHF_CONNECTION_STATE_DISCONNECTED;
HAL_CBACK(bt_hf_callbacks, connection_state_cb, btif_hf_cb.state, &btif_hf_cb.connected_bda);
bdsetany(btif_hf_cb.connected_bda.address);
btif_hf_cb.peer_feat = 0;
clear_phone_state();
/* If AG_OPEN was received but SLC was not setup in a specified time (10 seconds),
** then AG_CLOSE may be received. We need to advance the queue here
*/
btif_queue_advance();
break;
case BTA_AG_CONN_EVT:
btif_hf_cb.peer_feat = p_data->conn.peer_feat;
btif_hf_cb.state = BTHF_CONNECTION_STATE_SLC_CONNECTED;
HAL_CBACK(bt_hf_callbacks, connection_state_cb, btif_hf_cb.state,
&btif_hf_cb.connected_bda);
btif_queue_advance();
break;
case BTA_AG_AUDIO_OPEN_EVT:
HAL_CBACK(bt_hf_callbacks, audio_state_cb, BTHF_AUDIO_STATE_CONNECTED, &btif_hf_cb.connected_bda);
break;
case BTA_AG_AUDIO_CLOSE_EVT:
HAL_CBACK(bt_hf_callbacks, audio_state_cb, BTHF_AUDIO_STATE_DISCONNECTED, &btif_hf_cb.connected_bda);
break;
/* BTA auto-responds, silently discard */
case BTA_AG_SPK_EVT:
case BTA_AG_MIC_EVT:
HAL_CBACK(bt_hf_callbacks, volume_cmd_cb,
(event == BTA_AG_SPK_EVT) ? BTHF_VOLUME_TYPE_SPK : BTHF_VOLUME_TYPE_MIC, p_data->val.num);
break;
case BTA_AG_AT_A_EVT:
HAL_CBACK(bt_hf_callbacks, answer_call_cmd_cb);
break;
/* Java needs to send OK/ERROR for these commands */
case BTA_AG_AT_BLDN_EVT:
case BTA_AG_AT_D_EVT:
HAL_CBACK(bt_hf_callbacks, dial_call_cmd_cb,
(event == BTA_AG_AT_D_EVT) ? p_data->val.str : NULL);
break;
case BTA_AG_AT_CHUP_EVT:
HAL_CBACK(bt_hf_callbacks, hangup_call_cmd_cb);
break;
case BTA_AG_AT_CIND_EVT:
HAL_CBACK(bt_hf_callbacks, cind_cmd_cb);
break;
case BTA_AG_AT_VTS_EVT:
HAL_CBACK(bt_hf_callbacks, dtmf_cmd_cb, p_data->val.str[0]);
break;
case BTA_AG_AT_BVRA_EVT:
HAL_CBACK(bt_hf_callbacks, vr_cmd_cb,
(p_data->val.num == 1) ? BTHF_VR_STATE_STARTED : BTHF_VR_STATE_STOPPED);
break;
case BTA_AG_AT_NREC_EVT:
HAL_CBACK(bt_hf_callbacks, nrec_cmd_cb,
(p_data->val.num == 1) ? BTHF_NREC_START : BTHF_NREC_STOP);
break;
/* TODO: Add a callback for CBC */
case BTA_AG_AT_CBC_EVT:
break;
case BTA_AG_AT_CKPD_EVT:
HAL_CBACK(bt_hf_callbacks, key_pressed_cmd_cb);
break;
/* Java needs to send OK/ERROR for these commands */
case BTA_AG_AT_CHLD_EVT:
HAL_CBACK(bt_hf_callbacks, chld_cmd_cb, atoi(p_data->val.str));
break;
case BTA_AG_AT_CLCC_EVT:
HAL_CBACK(bt_hf_callbacks, clcc_cmd_cb, p_data->val.num);
break;
case BTA_AG_AT_COPS_EVT:
HAL_CBACK(bt_hf_callbacks, cops_cmd_cb);
break;
case BTA_AG_AT_UNAT_EVT:
HAL_CBACK(bt_hf_callbacks, unknown_at_cmd_cb,
p_data->val.str);
break;
case BTA_AG_AT_CNUM_EVT:
HAL_CBACK(bt_hf_callbacks, cnum_cmd_cb);
break;
/* TODO: Some of these commands may need to be sent to app. For now respond with error */
case BTA_AG_AT_BINP_EVT:
case BTA_AG_AT_BTRH_EVT:
send_at_result(BTA_AG_OK_ERROR, BTA_AG_ERR_OP_NOT_SUPPORTED);
break;
default:
BTIF_TRACE_WARNING2("%s: Unhandled event: %d", __FUNCTION__, event);
break;
}
}
/*******************************************************************************
**
** Function bte_hf_evt
**
** Description Switches context from BTE to BTIF for all HF events
**
** Returns void
**
*******************************************************************************/
static void bte_hf_evt(tBTA_AG_EVT event, tBTA_AG *p_data)
{
bt_status_t status;
int param_len = 0;
/* TODO: BTA sends the union members and not tBTA_AG. If using param_len=sizeof(tBTA_AG), we get a crash on memcpy */
if (BTA_AG_REGISTER_EVT == event)
param_len = sizeof(tBTA_AG_REGISTER);
else if (BTA_AG_OPEN_EVT == event)
param_len = sizeof(tBTA_AG_OPEN);
else if (BTA_AG_CONN_EVT == event)
param_len = sizeof(tBTA_AG_CONN);
else if ( (BTA_AG_CLOSE_EVT == event) || (BTA_AG_AUDIO_OPEN_EVT == event) || (BTA_AG_AUDIO_CLOSE_EVT == event))
param_len = sizeof(tBTA_AG_HDR);
else if (p_data)
param_len = sizeof(tBTA_AG_VAL);
/* switch context to btif task context (copy full union size for convenience) */
status = btif_transfer_context(btif_hf_upstreams_evt, (uint16_t)event, (void*)p_data, param_len, NULL);
/* catch any failed context transfers */
ASSERTC(status == BT_STATUS_SUCCESS, "context transfer failed", status);
}
/*******************************************************************************
**
** Function btif_in_hf_generic_evt
**
** Description Processes generic events to be sent to JNI that are not triggered from the BTA.
** Always runs in BTIF context
**
** Returns void
**
*******************************************************************************/
static void btif_in_hf_generic_evt(UINT16 event, char *p_param)
{
BTIF_TRACE_EVENT2("%s: event=%d", __FUNCTION__, event);
switch (event) {
case BTIF_HFP_CB_AUDIO_CONNECTING:
{
HAL_CBACK(bt_hf_callbacks, audio_state_cb, BTHF_AUDIO_STATE_CONNECTING,
&btif_hf_cb.connected_bda);
} break;
default:
{
BTIF_TRACE_WARNING2("%s : Unknown event 0x%x", __FUNCTION__, event);
}
break;
}
}
/*******************************************************************************
**
** Function btif_hf_init
**
** Description initializes the hf interface
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t init( bthf_callbacks_t* callbacks )
{
BTIF_TRACE_EVENT1("%s", __FUNCTION__);
bt_hf_callbacks = callbacks;
/* Invoke the enable service API to the core to set the appropriate service_id
* Internally, the HSP_SERVICE_ID shall also be enabled if HFP is enabled (phone)
* othwerwise only HSP is enabled (tablet)
*/
#if (defined(BTIF_HF_SERVICES) && (BTIF_HF_SERVICES & BTA_HFP_SERVICE_MASK))
btif_enable_service(BTA_HFP_SERVICE_ID);
#else
btif_enable_service(BTA_HSP_SERVICE_ID);
#endif
memset(&btif_hf_cb, 0, sizeof(btif_hf_cb_t));
clear_phone_state();
return BT_STATUS_SUCCESS;
}
/*******************************************************************************
**
** Function connect
**
** Description connect to headset
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t connect_int( bt_bdaddr_t *bd_addr )
{
if (!is_connected(bd_addr))
{
btif_hf_cb.state = BTHF_CONNECTION_STATE_CONNECTING;
bdcpy(btif_hf_cb.connected_bda.address, bd_addr->address);
BTA_AgOpen(btif_hf_cb.handle, btif_hf_cb.connected_bda.address,
BTIF_HF_SECURITY, BTIF_HF_SERVICES);
return BT_STATUS_SUCCESS;
}
return BT_STATUS_BUSY;
}
static bt_status_t connect( bt_bdaddr_t *bd_addr )
{
CHECK_BTHF_INIT();
return btif_queue_connect(UUID_SERVCLASS_AG_HANDSFREE, bd_addr, connect_int);
}
/*******************************************************************************
**
** Function disconnect
**
** Description disconnect from headset
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t disconnect( bt_bdaddr_t *bd_addr )
{
CHECK_BTHF_INIT();
if (is_connected(bd_addr))
{
BTA_AgClose(btif_hf_cb.handle);
return BT_STATUS_SUCCESS;
}
return BT_STATUS_FAIL;
}
/*******************************************************************************
**
** Function connect_audio
**
** Description create an audio connection
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t connect_audio( bt_bdaddr_t *bd_addr )
{
CHECK_BTHF_INIT();
if (is_connected(bd_addr))
{
BTA_AgAudioOpen(btif_hf_cb.handle);
/* Inform the application that the audio connection has been initiated successfully */
btif_transfer_context(btif_in_hf_generic_evt, BTIF_HFP_CB_AUDIO_CONNECTING,
(char *)bd_addr, sizeof(bt_bdaddr_t), NULL);
return BT_STATUS_SUCCESS;
}
return BT_STATUS_FAIL;
}
/*******************************************************************************
**
** Function disconnect_audio
**
** Description close the audio connection
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t disconnect_audio( bt_bdaddr_t *bd_addr )
{
CHECK_BTHF_INIT();
if (is_connected(bd_addr))
{
BTA_AgAudioClose(btif_hf_cb.handle);
return BT_STATUS_SUCCESS;
}
return BT_STATUS_FAIL;
}
/*******************************************************************************
**
** Function start_voice_recognition
**
** Description start voice recognition
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t start_voice_recognition()
{
CHECK_BTHF_INIT();
if (is_connected(NULL))
{
if (btif_hf_cb.peer_feat & BTA_AG_PEER_FEAT_VREC)
{
tBTA_AG_RES_DATA ag_res;
memset(&ag_res, 0, sizeof(ag_res));
ag_res.state = 1;
BTA_AgResult (btif_hf_cb.handle, BTA_AG_BVRA_RES, &ag_res);
return BT_STATUS_SUCCESS;
}
else
{
return BT_STATUS_UNSUPPORTED;
}
}
return BT_STATUS_NOT_READY;
}
/*******************************************************************************
**
** Function stop_voice_recognition
**
** Description stop voice recognition
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t stop_voice_recognition()
{
CHECK_BTHF_INIT();
if (is_connected(NULL))
{
if (btif_hf_cb.peer_feat & BTA_AG_PEER_FEAT_VREC)
{
tBTA_AG_RES_DATA ag_res;
memset(&ag_res, 0, sizeof(ag_res));
ag_res.state = 0;
BTA_AgResult (btif_hf_cb.handle, BTA_AG_BVRA_RES, &ag_res);
return BT_STATUS_SUCCESS;
}
else
{
return BT_STATUS_UNSUPPORTED;
}
}
return BT_STATUS_NOT_READY;
}
/*******************************************************************************
**
** Function volume_control
**
** Description volume control
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t volume_control(bthf_volume_type_t type, int volume)
{
CHECK_BTHF_INIT();
tBTA_AG_RES_DATA ag_res;
memset(&ag_res, 0, sizeof(tBTA_AG_RES_DATA));
if (is_connected(NULL))
{
ag_res.num = volume;
BTA_AgResult(btif_hf_cb.handle,
(type == BTHF_VOLUME_TYPE_SPK) ? BTA_AG_SPK_RES : BTA_AG_MIC_RES,
&ag_res);
return BT_STATUS_SUCCESS;
}
return BT_STATUS_FAIL;
}
/*******************************************************************************
**
** Function device_status_notification
**
** Description Combined device status change notification
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t device_status_notification(bthf_network_state_t ntk_state,
bthf_service_type_t svc_type, int signal, int batt_chg)
{
CHECK_BTHF_INIT();
if (is_connected(NULL))
{
/* send all indicators to BTA.
** BTA will make sure no duplicates are sent out
*/
send_indicator_update(BTA_AG_IND_SERVICE,
(ntk_state == BTHF_NETWORK_STATE_AVAILABLE) ? 1 : 0);
send_indicator_update(BTA_AG_IND_ROAM,
(svc_type == BTHF_SERVICE_TYPE_HOME) ? 0 : 1);
send_indicator_update(BTA_AG_IND_SIGNAL, signal);
send_indicator_update(BTA_AG_IND_BATTCHG, batt_chg);
return BT_STATUS_SUCCESS;
}
return BT_STATUS_SUCCESS;
}
/*******************************************************************************
**
** Function cops_response
**
** Description Response for COPS command
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t cops_response(const char *cops)
{
CHECK_BTHF_INIT();
if (is_connected(NULL))
{
tBTA_AG_RES_DATA ag_res;
/* Format the response */
sprintf (ag_res.str, "0,0,\"%s\"", cops);
ag_res.ok_flag = BTA_AG_OK_DONE;
BTA_AgResult (btif_hf_cb.handle, BTA_AG_COPS_RES, &ag_res);
return BT_STATUS_SUCCESS;
}
return BT_STATUS_FAIL;
}
/*******************************************************************************
**
** Function cind_response
**
** Description Response for CIND command
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t cind_response(int svc, int num_active, int num_held,
bthf_call_state_t call_setup_state,
int signal, int roam, int batt_chg)
{
CHECK_BTHF_INIT();
if (is_connected(NULL))
{
tBTA_AG_RES_DATA ag_res;
memset (&ag_res, 0, sizeof (ag_res));
/* per the errata 2043, call=1 implies atleast one call is in progress (active/held)
** https://www.bluetooth.org/errata/errata_view.cfm?errata_id=2043
**/
sprintf (ag_res.str, "%d,%d,%d,%d,%d,%d,%d",
(num_active + num_held) ? 1 : 0, /* Call state */
callstate_to_callsetup(call_setup_state), /* Callsetup state */
svc, /* network service */
signal, /* Signal strength */
roam, /* Roaming indicator */
batt_chg, /* Battery level */
((num_held == 0) ? 0 : ((num_active == 0) ? 2 : 1))); /* Call held */
BTA_AgResult (btif_hf_cb.handle, BTA_AG_CIND_RES, &ag_res);
return BT_STATUS_SUCCESS;
}
return BT_STATUS_FAIL;
}
/*******************************************************************************
**
** Function formatted_at_response
**
** Description Pre-formatted AT response, typically in response to unknown AT cmd
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t formatted_at_response(const char *rsp)
{
CHECK_BTHF_INIT();
tBTA_AG_RES_DATA ag_res;
if (is_connected(NULL))
{
/* Format the response and send */
memset (&ag_res, 0, sizeof (ag_res));
strncpy(ag_res.str, rsp, BTA_AG_AT_MAX_LEN);
BTA_AgResult (btif_hf_cb.handle, BTA_AG_UNAT_RES, &ag_res);
return BT_STATUS_SUCCESS;
}
return BT_STATUS_FAIL;
}
/*******************************************************************************
**
** Function at_response
**
** Description ok/error response
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t at_response(bthf_at_response_t response_code, int error_code)
{
CHECK_BTHF_INIT();
if (is_connected(NULL))
{
send_at_result((response_code == BTHF_AT_RESPONSE_OK) ? BTA_AG_OK_DONE
: BTA_AG_OK_ERROR, error_code);
return BT_STATUS_SUCCESS;
}
return BT_STATUS_FAIL;
}
/*******************************************************************************
**
** Function clcc_response
**
** Description response for CLCC command
** Can be iteratively called for each call index. Call index
** of 0 will be treated as NULL termination (Completes response)
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t clcc_response(int index, bthf_call_direction_t dir,
bthf_call_state_t state, bthf_call_mode_t mode,
bthf_call_mpty_type_t mpty, const char *number,
bthf_call_addrtype_t type)
{
CHECK_BTHF_INIT();
if (is_connected(NULL))
{
tBTA_AG_RES_DATA ag_res;
int xx;
memset (&ag_res, 0, sizeof (ag_res));
/* Format the response */
if (index == 0)
{
ag_res.ok_flag = BTA_AG_OK_DONE;
}
else
{
BTIF_TRACE_EVENT6("clcc_response: [%d] dir %d state %d mode %d number = %s type = %d",
index, dir, state, mode, number, type);
xx = sprintf (ag_res.str, "%d,%d,%d,%d,%d",
index, dir, state, mode, mpty);
if (number)
{
if ((type == BTHF_CALL_ADDRTYPE_INTERNATIONAL) && (*number != '+'))
sprintf (&ag_res.str[xx], ",\"+%s\",%d", number, type);
else
sprintf (&ag_res.str[xx], ",\"%s\",%d", number, type);
}
}
BTA_AgResult (btif_hf_cb.handle, BTA_AG_CLCC_RES, &ag_res);
return BT_STATUS_SUCCESS;
}
return BT_STATUS_FAIL;
}
/*******************************************************************************
**
** Function phone_state_change
**
** Description notify of a call state change
** number & type: valid only for incoming & waiting call
**
** Returns bt_status_t
**
*******************************************************************************/
static bt_status_t phone_state_change(int num_active, int num_held, bthf_call_state_t call_setup_state,
const char *number, bthf_call_addrtype_t type)
{
tBTA_AG_RES res = 0xff;
tBTA_AG_RES_DATA ag_res;
bt_status_t status = BT_STATUS_SUCCESS;
BOOLEAN activeCallUpdated = FALSE;
CHECK_BTHF_SLC_CONNECTED();
BTIF_TRACE_DEBUG6("phone_state_change: num_active=%d [prev: %d] num_held=%d[prev: %d]"\
" call_setup=%s [prev: %s]", num_active, btif_hf_cb.num_active,
num_held, btif_hf_cb.num_held,
dump_hf_call_state(call_setup_state), dump_hf_call_state(btif_hf_cb.call_setup_state));
/* if all indicators are 0, send end call and return */
if (num_active == 0 && num_held == 0 && call_setup_state == BTHF_CALL_STATE_IDLE)
{
BTIF_TRACE_DEBUG1("%s: Phone on hook", __FUNCTION__);
/* record call termination timestamp if there was an active/held call or callsetup state > BTHF_CALL_STATE_IDLE */
if ((btif_hf_cb.call_setup_state != BTHF_CALL_STATE_IDLE ) || (btif_hf_cb.num_active) ||(btif_hf_cb.num_held))
{
BTIF_TRACE_DEBUG1("%s: Record call termination timestamp", __FUNCTION__);
clock_gettime(CLOCK_MONOTONIC, &btif_hf_cb.call_end_timestamp);
}
BTA_AgResult (BTA_AG_HANDLE_ALL, BTA_AG_END_CALL_RES, NULL);
/* if held call was present, reset that as well */
if (btif_hf_cb.num_held)
send_indicator_update(BTA_AG_IND_CALLHELD, 0);
goto update_call_states;
}
/* active state can change when:
** 1. an outgoing/incoming call was answered
** 2. an held was resumed
** 3. without callsetup notifications, call became active
** (3) can happen if call is active and a headset connects to us
**
** In the case of (3), we will have to notify the stack of an active
** call, instead of sending an indicator update. This will also
** force the SCO to be setup. Handle this special case here prior to
** call setup handling
*/
if ( (num_active == 1) && (btif_hf_cb.num_active == 0) && (btif_hf_cb.num_held == 0) &&
(btif_hf_cb.call_setup_state == BTHF_CALL_STATE_IDLE) )
{
BTIF_TRACE_DEBUG1("%s: Active call notification received without call setup update",
__FUNCTION__);
memset(&ag_res, 0, sizeof(tBTA_AG_RES_DATA));
ag_res.audio_handle = btif_hf_cb.handle;
res = BTA_AG_OUT_CALL_CONN_RES;
BTA_AgResult(BTA_AG_HANDLE_ALL, res, &ag_res);
activeCallUpdated = TRUE;
}
/* Ringing call changed? */
if (call_setup_state != btif_hf_cb.call_setup_state)
{
BTIF_TRACE_DEBUG3("%s: Call setup states changed. old: %s new: %s",
__FUNCTION__, dump_hf_call_state(btif_hf_cb.call_setup_state),
dump_hf_call_state(call_setup_state));
memset(&ag_res, 0, sizeof(tBTA_AG_RES_DATA));
switch (call_setup_state)
{
case BTHF_CALL_STATE_IDLE:
{
switch (btif_hf_cb.call_setup_state)
{
case BTHF_CALL_STATE_INCOMING:
if (num_active > btif_hf_cb.num_active)
{
res = BTA_AG_IN_CALL_CONN_RES;
ag_res.audio_handle = btif_hf_cb.handle;
}
else if (num_held > btif_hf_cb.num_held)
res = BTA_AG_IN_CALL_HELD_RES;
else
res = BTA_AG_CALL_CANCEL_RES;
break;
case BTHF_CALL_STATE_DIALING:
case BTHF_CALL_STATE_ALERTING:
if (num_active > btif_hf_cb.num_active)
{
ag_res.audio_handle = BTA_AG_HANDLE_SCO_NO_CHANGE;
res = BTA_AG_OUT_CALL_CONN_RES;
}
else
res = BTA_AG_CALL_CANCEL_RES;
break;
default:
BTIF_TRACE_ERROR1("%s: Incorrect Call setup state transition", __FUNCTION__);
status = BT_STATUS_PARM_INVALID;
break;
}
} break;
case BTHF_CALL_STATE_INCOMING:
if (num_active || num_held)
res = BTA_AG_CALL_WAIT_RES;
else
res = BTA_AG_IN_CALL_RES;
if (number)
{
int xx = 0;
if ((type == BTHF_CALL_ADDRTYPE_INTERNATIONAL) && (*number != '+'))
xx = sprintf (ag_res.str, "\"+%s\"", number);
else
xx = sprintf (ag_res.str, "\"%s\"", number);
ag_res.num = type;
if (res == BTA_AG_CALL_WAIT_RES)
sprintf(&ag_res.str[xx], ",%d", type);
}
break;
case BTHF_CALL_STATE_DIALING:
ag_res.audio_handle = btif_hf_cb.handle;
res = BTA_AG_OUT_CALL_ORIG_RES;
break;
case BTHF_CALL_STATE_ALERTING:
/* if we went from idle->alert, force SCO setup here. dialing usually triggers it */
if (btif_hf_cb.call_setup_state == BTHF_CALL_STATE_IDLE)
ag_res.audio_handle = btif_hf_cb.handle;
res = BTA_AG_OUT_CALL_ALERT_RES;
break;
default:
BTIF_TRACE_ERROR1("%s: Incorrect new ringing call state", __FUNCTION__);
status = BT_STATUS_PARM_INVALID;
break;
}
BTIF_TRACE_DEBUG3("%s: Call setup state changed. res=%d, audio_handle=%d", __FUNCTION__, res, ag_res.audio_handle);
if (res)
BTA_AgResult(BTA_AG_HANDLE_ALL, res, &ag_res);
/* if call setup is idle, we have already updated call indicator, jump out */
if (call_setup_state == BTHF_CALL_STATE_IDLE)
{
/* check & update callheld */
if ((num_held > 0) && (num_active > 0))
send_indicator_update(BTA_AG_IND_CALLHELD, 1);
goto update_call_states;
}
}
memset(&ag_res, 0, sizeof(tBTA_AG_RES_DATA));
/* per the errata 2043, call=1 implies atleast one call is in progress (active/held)
** https://www.bluetooth.org/errata/errata_view.cfm?errata_id=2043
** Handle call indicator change
**/
if (!activeCallUpdated && ((num_active + num_held) != (btif_hf_cb.num_active + btif_hf_cb.num_held)) )
{
BTIF_TRACE_DEBUG3("%s: Active call states changed. old: %d new: %d", __FUNCTION__, btif_hf_cb.num_active, num_active);
send_indicator_update(BTA_AG_IND_CALL, ((num_active + num_held) > 0) ? 1 : 0);
}
/* Held Changed? */
if (num_held != btif_hf_cb.num_held)
{
BTIF_TRACE_DEBUG3("%s: Held call states changed. old: %d new: %d", __FUNCTION__, btif_hf_cb.num_held, num_held);
send_indicator_update(BTA_AG_IND_CALLHELD, ((num_held == 0) ? 0 : ((num_active == 0) ? 2 : 1)));
}
/* Calls Swapped? */
if ( (call_setup_state == btif_hf_cb.call_setup_state) &&
(num_active && num_held) &&
(num_active == btif_hf_cb.num_active) &&
(num_held == btif_hf_cb.num_held) )
{
BTIF_TRACE_DEBUG1("%s: Calls swapped", __FUNCTION__);
send_indicator_update(BTA_AG_IND_CALLHELD, 1);
}
update_call_states:
btif_hf_cb.num_active = num_active;
btif_hf_cb.num_held = num_held;
btif_hf_cb.call_setup_state = call_setup_state;
return status;
}
/*******************************************************************************
**
** Function btif_hf_call_terminated_recently
**
** Description Checks if a call has been terminated
**
** Returns bt_status_t
**
*******************************************************************************/
BOOLEAN btif_hf_call_terminated_recently()
{
struct timespec now;
clock_gettime(CLOCK_MONOTONIC, &now);
if (now.tv_sec < btif_hf_cb.call_end_timestamp.tv_sec + BTIF_HF_CALL_END_TIMEOUT)
{
return TRUE;
}
else
{
btif_hf_cb.call_end_timestamp.tv_sec = 0;
return FALSE;
}
}
/*******************************************************************************
**
** Function cleanup
**
** Description Closes the HF interface
**
** Returns bt_status_t
**
*******************************************************************************/
static void cleanup( void )
{
BTIF_TRACE_EVENT1("%s", __FUNCTION__);
if (bt_hf_callbacks)
{
btif_disable_service(BTA_HFP_SERVICE_ID);
bt_hf_callbacks = NULL;
}
}
static const bthf_interface_t bthfInterface = {
sizeof(bt_interface_t),
init,
connect,
disconnect,
connect_audio,
disconnect_audio,
start_voice_recognition,
stop_voice_recognition,
volume_control,
device_status_notification,
cops_response,
cind_response,
formatted_at_response,
at_response,
clcc_response,
phone_state_change,
cleanup,
};
/*******************************************************************************
**
** Function btif_hf_execute_service
**
** Description Initializes/Shuts down the service
**
** Returns BT_STATUS_SUCCESS on success, BT_STATUS_FAIL otherwise
**
*******************************************************************************/
bt_status_t btif_hf_execute_service(BOOLEAN b_enable)
{
char * p_service_names[] = BTIF_HF_SERVICE_NAMES;
if (b_enable)
{
/* Enable and register with BTA-AG */
BTA_AgEnable (BTA_AG_PARSE, bte_hf_evt);
BTA_AgRegister(BTIF_HF_SERVICES, BTIF_HF_SECURITY, BTIF_HF_FEATURES,
p_service_names, BTIF_HF_ID_1);
}
else {
/* De-register AG */
BTA_AgDeregister(btif_hf_cb.handle);
/* Disable AG */
BTA_AgDisable();
}
return BT_STATUS_SUCCESS;
}
/*******************************************************************************
**
** Function btif_hf_get_interface
**
** Description Get the hf callback interface
**
** Returns bthf_interface_t
**
*******************************************************************************/
const bthf_interface_t *btif_hf_get_interface()
{
BTIF_TRACE_EVENT1("%s", __FUNCTION__);
return &bthfInterface;
}