/****************************************************************************** * * 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 #include #include #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; }