| /****************************************************************************** |
| * |
| * Copyright 2003-2012 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 is the main implementation file for the BTA audio gateway. |
| * |
| ******************************************************************************/ |
| |
| #include <string> |
| #include <vector> |
| |
| #include "bta/ag/bta_ag_int.h" |
| #include "main/shim/dumpsys.h" |
| #include "osi/include/alarm.h" |
| #include "osi/include/compat.h" |
| #include "osi/include/log.h" |
| #include "osi/include/osi.h" |
| #include "stack/include/bt_hdr.h" |
| #include "stack/include/btm_api.h" |
| #include "types/raw_address.h" |
| |
| #include <base/logging.h> |
| |
| /***************************************************************************** |
| * Constants and types |
| ****************************************************************************/ |
| /* state machine states */ |
| enum { BTA_AG_INIT_ST, BTA_AG_OPENING_ST, BTA_AG_OPEN_ST, BTA_AG_CLOSING_ST }; |
| |
| #define CASE_RETURN_STR(const) \ |
| case const: \ |
| return #const; |
| |
| static const char* bta_ag_res_str(tBTA_AG_RES result) { |
| switch (result) { |
| CASE_RETURN_STR(BTA_AG_SPK_RES) |
| CASE_RETURN_STR(BTA_AG_MIC_RES) |
| CASE_RETURN_STR(BTA_AG_INBAND_RING_RES) |
| CASE_RETURN_STR(BTA_AG_CIND_RES) |
| CASE_RETURN_STR(BTA_AG_BINP_RES) |
| CASE_RETURN_STR(BTA_AG_IND_RES) |
| CASE_RETURN_STR(BTA_AG_BVRA_RES) |
| CASE_RETURN_STR(BTA_AG_CNUM_RES) |
| CASE_RETURN_STR(BTA_AG_BTRH_RES) |
| CASE_RETURN_STR(BTA_AG_CLCC_RES) |
| CASE_RETURN_STR(BTA_AG_COPS_RES) |
| CASE_RETURN_STR(BTA_AG_IN_CALL_RES) |
| CASE_RETURN_STR(BTA_AG_IN_CALL_CONN_RES) |
| CASE_RETURN_STR(BTA_AG_CALL_WAIT_RES) |
| CASE_RETURN_STR(BTA_AG_OUT_CALL_ORIG_RES) |
| CASE_RETURN_STR(BTA_AG_OUT_CALL_ALERT_RES) |
| CASE_RETURN_STR(BTA_AG_OUT_CALL_CONN_RES) |
| CASE_RETURN_STR(BTA_AG_CALL_CANCEL_RES) |
| CASE_RETURN_STR(BTA_AG_END_CALL_RES) |
| CASE_RETURN_STR(BTA_AG_IN_CALL_HELD_RES) |
| CASE_RETURN_STR(BTA_AG_UNAT_RES) |
| CASE_RETURN_STR(BTA_AG_MULTI_CALL_RES) |
| CASE_RETURN_STR(BTA_AG_BIND_RES) |
| CASE_RETURN_STR(BTA_AG_IND_RES_ON_DEMAND) |
| default: |
| return "Unknown AG Result"; |
| } |
| } |
| |
| static const char* bta_ag_evt_str(uint16_t event) { |
| switch (event) { |
| CASE_RETURN_STR(BTA_AG_API_REGISTER_EVT) |
| CASE_RETURN_STR(BTA_AG_API_DEREGISTER_EVT) |
| CASE_RETURN_STR(BTA_AG_API_OPEN_EVT) |
| CASE_RETURN_STR(BTA_AG_API_CLOSE_EVT) |
| CASE_RETURN_STR(BTA_AG_API_AUDIO_OPEN_EVT) |
| CASE_RETURN_STR(BTA_AG_API_AUDIO_CLOSE_EVT) |
| CASE_RETURN_STR(BTA_AG_API_RESULT_EVT) |
| CASE_RETURN_STR(BTA_AG_API_SETCODEC_EVT) |
| CASE_RETURN_STR(BTA_AG_RFC_OPEN_EVT) |
| CASE_RETURN_STR(BTA_AG_RFC_CLOSE_EVT) |
| CASE_RETURN_STR(BTA_AG_RFC_SRV_CLOSE_EVT) |
| CASE_RETURN_STR(BTA_AG_RFC_DATA_EVT) |
| CASE_RETURN_STR(BTA_AG_SCO_OPEN_EVT) |
| CASE_RETURN_STR(BTA_AG_SCO_CLOSE_EVT) |
| CASE_RETURN_STR(BTA_AG_DISC_ACP_RES_EVT) |
| CASE_RETURN_STR(BTA_AG_DISC_INT_RES_EVT) |
| CASE_RETURN_STR(BTA_AG_DISC_OK_EVT) |
| CASE_RETURN_STR(BTA_AG_DISC_FAIL_EVT) |
| CASE_RETURN_STR(BTA_AG_RING_TIMEOUT_EVT) |
| CASE_RETURN_STR(BTA_AG_SVC_TIMEOUT_EVT) |
| CASE_RETURN_STR(BTA_AG_COLLISION_EVT) |
| default: |
| return "Unknown AG Event"; |
| } |
| } |
| |
| static const char* bta_ag_state_str(uint8_t state) { |
| switch (state) { |
| CASE_RETURN_STR(BTA_AG_INIT_ST) |
| CASE_RETURN_STR(BTA_AG_OPENING_ST) |
| CASE_RETURN_STR(BTA_AG_OPEN_ST) |
| CASE_RETURN_STR(BTA_AG_CLOSING_ST) |
| default: |
| return "Unknown AG State"; |
| } |
| } |
| |
| /***************************************************************************** |
| * Global data |
| ****************************************************************************/ |
| |
| /* AG control block */ |
| tBTA_AG_CB bta_ag_cb; |
| const tBTA_AG_DATA tBTA_AG_DATA::kEmpty = {}; |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_scb_alloc |
| * |
| * Description Allocate an AG service control block. |
| * |
| * |
| * Returns pointer to the scb, or NULL if none could be allocated. |
| * |
| ******************************************************************************/ |
| static tBTA_AG_SCB* bta_ag_scb_alloc(void) { |
| tBTA_AG_SCB* p_scb = &bta_ag_cb.scb[0]; |
| int i; |
| |
| for (i = 0; i < BTA_AG_MAX_NUM_CLIENTS; i++, p_scb++) { |
| if (!p_scb->in_use) { |
| /* initialize variables */ |
| p_scb->in_use = true; |
| p_scb->sco_idx = BTM_INVALID_SCO_INDEX; |
| p_scb->received_at_bac = false; |
| p_scb->codec_updated = false; |
| p_scb->codec_fallback = false; |
| p_scb->peer_codecs = BTM_SCO_CODEC_CVSD; |
| p_scb->sco_codec = BTM_SCO_CODEC_CVSD; |
| p_scb->peer_version = HFP_HSP_VERSION_UNKNOWN; |
| p_scb->hsp_version = HSP_VERSION_1_2; |
| p_scb->peer_sdp_features = 0; |
| /* set up timers */ |
| p_scb->ring_timer = alarm_new("bta_ag.scb_ring_timer"); |
| p_scb->collision_timer = alarm_new("bta_ag.scb_collision_timer"); |
| p_scb->codec_negotiation_timer = |
| alarm_new("bta_ag.scb_codec_negotiation_timer"); |
| /* set eSCO mSBC setting to T2 as the preferred */ |
| p_scb->codec_msbc_settings = BTA_AG_SCO_MSBC_SETTINGS_T2; |
| APPL_TRACE_DEBUG("bta_ag_scb_alloc %d", bta_ag_scb_to_idx(p_scb)); |
| break; |
| } |
| } |
| |
| if (i == BTA_AG_MAX_NUM_CLIENTS) { |
| /* out of scbs */ |
| p_scb = nullptr; |
| APPL_TRACE_WARNING("%s: Out of scbs", __func__); |
| } |
| return p_scb; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_scb_dealloc |
| * |
| * Description Deallocate a service control block. |
| * |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void bta_ag_scb_dealloc(tBTA_AG_SCB* p_scb) { |
| uint8_t idx; |
| bool allocated = false; |
| |
| APPL_TRACE_DEBUG("bta_ag_scb_dealloc %d", bta_ag_scb_to_idx(p_scb)); |
| |
| /* stop and free timers */ |
| alarm_free(p_scb->ring_timer); |
| alarm_free(p_scb->codec_negotiation_timer); |
| alarm_free(p_scb->collision_timer); |
| |
| /* initialize control block */ |
| *p_scb = {}; |
| p_scb->sco_idx = BTM_INVALID_SCO_INDEX; |
| |
| /* If all scbs are deallocated, callback with disable event */ |
| if (!bta_sys_is_register(BTA_ID_AG)) { |
| for (idx = 0; idx < BTA_AG_MAX_NUM_CLIENTS; idx++) { |
| if (bta_ag_cb.scb[idx].in_use) { |
| allocated = true; |
| break; |
| } |
| } |
| |
| if (!allocated) { |
| (*bta_ag_cb.p_cback)(BTA_AG_DISABLE_EVT, nullptr); |
| } |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_scb_to_idx |
| * |
| * Description Given a pointer to an scb, return its index. |
| * |
| * |
| * Returns Index of scb starting from 1 |
| * |
| ******************************************************************************/ |
| uint16_t bta_ag_scb_to_idx(tBTA_AG_SCB* p_scb) { |
| /* use array arithmetic to determine index */ |
| return static_cast<uint16_t>(p_scb - bta_ag_cb.scb + 1); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_scb_by_idx |
| * |
| * Description Given an scb index return pointer to scb. |
| * |
| * |
| * Returns Pointer to scb or NULL if not allocated. |
| * |
| ******************************************************************************/ |
| tBTA_AG_SCB* bta_ag_scb_by_idx(uint16_t idx) { |
| tBTA_AG_SCB* p_scb; |
| |
| /* verify index */ |
| if (idx > 0 && idx <= BTA_AG_MAX_NUM_CLIENTS) { |
| p_scb = &bta_ag_cb.scb[idx - 1]; |
| if (!p_scb->in_use) { |
| p_scb = nullptr; |
| APPL_TRACE_WARNING("ag scb idx %d not allocated", idx); |
| } |
| } else { |
| p_scb = nullptr; |
| APPL_TRACE_DEBUG("ag scb idx %d out of range", idx); |
| } |
| return p_scb; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_service_to_idx |
| * |
| * Description Given a BTA service mask convert to profile index. |
| * |
| * |
| * Returns Profile ndex of scb. |
| * |
| ******************************************************************************/ |
| uint8_t bta_ag_service_to_idx(tBTA_SERVICE_MASK services) { |
| if (services & BTA_HFP_SERVICE_MASK) { |
| return BTA_AG_HFP; |
| } else { |
| return BTA_AG_HSP; |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_idx_by_bdaddr |
| * |
| * Description Find SCB associated with peer BD address. |
| * |
| * |
| * Returns Index of SCB or zero if none found. |
| * |
| ******************************************************************************/ |
| uint16_t bta_ag_idx_by_bdaddr(const RawAddress* peer_addr) { |
| tBTA_AG_SCB* p_scb = &bta_ag_cb.scb[0]; |
| if (peer_addr != nullptr) { |
| for (uint16_t i = 0; i < BTA_AG_MAX_NUM_CLIENTS; i++, p_scb++) { |
| if (p_scb->in_use && *peer_addr == p_scb->peer_addr) { |
| return (i + 1); |
| } |
| } |
| } |
| |
| /* no scb found */ |
| APPL_TRACE_WARNING("No ag scb for peer addr"); |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_other_scb_open |
| * |
| * Description Check whether any other scb is in open state. |
| * |
| * |
| * Returns true if another scb is in open state, false otherwise. |
| * |
| ******************************************************************************/ |
| bool bta_ag_other_scb_open(tBTA_AG_SCB* p_curr_scb) { |
| tBTA_AG_SCB* p_scb = &bta_ag_cb.scb[0]; |
| for (int i = 0; i < BTA_AG_MAX_NUM_CLIENTS; i++, p_scb++) { |
| if (p_scb->in_use && p_scb != p_curr_scb && |
| p_scb->state == BTA_AG_OPEN_ST) { |
| return true; |
| } |
| } |
| /* no other scb found */ |
| APPL_TRACE_DEBUG("No other ag scb open"); |
| return false; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_scb_open |
| * |
| * Description Check whether given scb is in open state. |
| * |
| * |
| * Returns true if scb is in open state, false otherwise. |
| * |
| ******************************************************************************/ |
| bool bta_ag_scb_open(tBTA_AG_SCB* p_curr_scb) { |
| return p_curr_scb && p_curr_scb->in_use && |
| p_curr_scb->state == BTA_AG_OPEN_ST; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_collision_cback |
| * |
| * Description Get notified about collision. |
| * |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void bta_ag_collision_cback(UNUSED_ATTR tBTA_SYS_CONN_STATUS status, uint8_t id, |
| UNUSED_ATTR uint8_t app_id, |
| const RawAddress& peer_addr) { |
| /* Check if we have opening scb for the peer device. */ |
| uint16_t handle = bta_ag_idx_by_bdaddr(&peer_addr); |
| tBTA_AG_SCB* p_scb = bta_ag_scb_by_idx(handle); |
| |
| if (p_scb && (p_scb->state == BTA_AG_OPENING_ST)) { |
| if (id == BTA_ID_SYS) { |
| LOG(WARNING) << __func__ << ": AG found collision (ACL) for handle " |
| << unsigned(handle) << " device " << peer_addr; |
| } else if (id == BTA_ID_AG) { |
| LOG(WARNING) << __func__ << ": AG found collision (RFCOMM) for handle " |
| << unsigned(handle) << " device " << peer_addr; |
| } else { |
| LOG(WARNING) << __func__ << ": AG found collision (UNKNOWN) for handle " |
| << unsigned(handle) << " device " << peer_addr; |
| } |
| bta_ag_sm_execute(p_scb, BTA_AG_COLLISION_EVT, tBTA_AG_DATA::kEmpty); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_resume_open |
| * |
| * Description Resume opening process. |
| * |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void bta_ag_resume_open(tBTA_AG_SCB* p_scb) { |
| if (p_scb->state == BTA_AG_INIT_ST) { |
| LOG(INFO) << __func__ << ": Resume connection to " << p_scb->peer_addr |
| << ", handle" << bta_ag_scb_to_idx(p_scb); |
| tBTA_AG_DATA open_data = {.api_open = {.bd_addr = p_scb->peer_addr}}; |
| bta_ag_sm_execute(p_scb, BTA_AG_API_OPEN_EVT, open_data); |
| } else { |
| VLOG(1) << __func__ << ": device " << p_scb->peer_addr |
| << " is already in state " << std::to_string(p_scb->state); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_api_enable |
| * |
| * Description Handle an API enable event. |
| * |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void bta_ag_api_enable(tBTA_AG_CBACK* p_cback) { |
| /* initialize control block */ |
| for (tBTA_AG_SCB& scb : bta_ag_cb.scb) { |
| alarm_free(scb.ring_timer); |
| alarm_free(scb.codec_negotiation_timer); |
| alarm_free(scb.collision_timer); |
| scb = {}; |
| } |
| |
| /* store callback function */ |
| bta_ag_cb.p_cback = p_cback; |
| |
| /* call init call-out */ |
| BTM_WriteVoiceSettings(AG_VOICE_SETTINGS); |
| |
| bta_sys_collision_register(BTA_ID_AG, bta_ag_collision_cback); |
| |
| /* call callback with enable event */ |
| (*bta_ag_cb.p_cback)(BTA_AG_ENABLE_EVT, nullptr); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_api_disable |
| * |
| * Description Handle an API disable event. |
| * |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void bta_ag_api_disable() { |
| /* deregister all scbs in use */ |
| tBTA_AG_SCB* p_scb = &bta_ag_cb.scb[0]; |
| bool do_dereg = false; |
| int i; |
| |
| if (!bta_sys_is_register(BTA_ID_AG)) { |
| APPL_TRACE_ERROR("BTA AG is already disabled, ignoring ..."); |
| return; |
| } |
| |
| /* De-register with BTA system manager */ |
| bta_sys_deregister(BTA_ID_AG); |
| |
| for (i = 0; i < BTA_AG_MAX_NUM_CLIENTS; i++, p_scb++) { |
| if (p_scb->in_use) { |
| bta_ag_sm_execute(p_scb, BTA_AG_API_DEREGISTER_EVT, tBTA_AG_DATA::kEmpty); |
| do_dereg = true; |
| } |
| } |
| |
| if (!do_dereg) { |
| /* Done, send callback evt to app */ |
| (*bta_ag_cb.p_cback)(BTA_AG_DISABLE_EVT, nullptr); |
| } |
| |
| bta_sys_collision_register(BTA_ID_AG, nullptr); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_api_register |
| * |
| * Description Handle an API event registers a new service. |
| * |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void bta_ag_api_register(tBTA_SERVICE_MASK services, tBTA_AG_FEAT features, |
| const std::vector<std::string>& service_names, |
| uint8_t app_id) { |
| tBTA_AG_SCB* p_scb = bta_ag_scb_alloc(); |
| if (p_scb) { |
| APPL_TRACE_DEBUG("bta_ag_api_register: p_scb 0x%08x ", p_scb); |
| tBTA_AG_DATA data = {}; |
| data.api_register.features = features; |
| data.api_register.services = services; |
| data.api_register.app_id = app_id; |
| for (int i = 0; i < BTA_AG_NUM_IDX; i++) { |
| if (!service_names[i].empty()) { |
| strlcpy(data.api_register.p_name[i], service_names[i].c_str(), |
| BTA_SERVICE_NAME_LEN); |
| } else { |
| data.api_register.p_name[i][0] = 0; |
| } |
| } |
| bta_ag_sm_execute(p_scb, BTA_AG_API_REGISTER_EVT, data); |
| } else { |
| tBTA_AG bta_ag = {}; |
| bta_ag.reg.status = BTA_AG_FAIL_RESOURCES; |
| (*bta_ag_cb.p_cback)(BTA_AG_REGISTER_EVT, &bta_ag); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_api_result |
| * |
| * Description Handle an API result event. |
| * |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void bta_ag_api_result(uint16_t handle, tBTA_AG_RES result, |
| const tBTA_AG_RES_DATA& result_data) { |
| tBTA_AG_DATA event_data = {}; |
| event_data.api_result.result = result; |
| event_data.api_result.data = result_data; |
| tBTA_AG_SCB* p_scb; |
| if (handle != BTA_AG_HANDLE_ALL) { |
| p_scb = bta_ag_scb_by_idx(handle); |
| if (p_scb) { |
| LOG_DEBUG("Audio gateway event for one client handle:%hu scb:%s", handle, |
| p_scb->ToString().c_str()); |
| bta_ag_sm_execute(p_scb, static_cast<uint16_t>(BTA_AG_API_RESULT_EVT), |
| event_data); |
| } else { |
| LOG_WARN( |
| "Received audio gateway event for unknown AG control block " |
| "handle:%hu", |
| handle); |
| } |
| } else { |
| int i; |
| for (i = 0, p_scb = &bta_ag_cb.scb[0]; i < BTA_AG_MAX_NUM_CLIENTS; |
| i++, p_scb++) { |
| if (p_scb->in_use && p_scb->svc_conn) { |
| LOG_DEBUG("Audio gateway event for all clients scb:%s", |
| p_scb->ToString().c_str()); |
| bta_ag_sm_execute(p_scb, static_cast<uint16_t>(BTA_AG_API_RESULT_EVT), |
| event_data); |
| } |
| } |
| } |
| } |
| |
| static void bta_ag_better_state_machine(tBTA_AG_SCB* p_scb, uint16_t event, |
| const tBTA_AG_DATA& data) { |
| switch (p_scb->state) { |
| case BTA_AG_INIT_ST: |
| switch (event) { |
| case BTA_AG_API_REGISTER_EVT: |
| bta_ag_register(p_scb, data); |
| break; |
| case BTA_AG_API_DEREGISTER_EVT: |
| bta_ag_deregister(p_scb, data); |
| break; |
| case BTA_AG_API_OPEN_EVT: |
| p_scb->state = BTA_AG_OPENING_ST; |
| bta_ag_start_open(p_scb, data); |
| break; |
| case BTA_AG_RFC_OPEN_EVT: |
| p_scb->state = BTA_AG_OPEN_ST; |
| bta_ag_rfc_acp_open(p_scb, data); |
| bta_ag_sco_listen(p_scb, data); |
| break; |
| case BTA_AG_SCO_OPEN_EVT: |
| bta_ag_sco_conn_open(p_scb, data); |
| break; |
| case BTA_AG_SCO_CLOSE_EVT: |
| bta_ag_sco_conn_close(p_scb, data); |
| break; |
| case BTA_AG_DISC_ACP_RES_EVT: |
| bta_ag_free_db(p_scb, data); |
| break; |
| default: |
| LOG_ERROR("unknown event %d at state %d", event, p_scb->state); |
| break; |
| } |
| break; |
| case BTA_AG_OPENING_ST: |
| switch (event) { |
| case BTA_AG_API_DEREGISTER_EVT: |
| p_scb->state = BTA_AG_CLOSING_ST; |
| bta_ag_rfc_do_close(p_scb, data); |
| bta_ag_start_dereg(p_scb, data); |
| break; |
| case BTA_AG_API_OPEN_EVT: |
| bta_ag_open_fail(p_scb, data); |
| break; |
| case BTA_AG_API_CLOSE_EVT: |
| p_scb->state = BTA_AG_CLOSING_ST; |
| bta_ag_rfc_do_close(p_scb, data); |
| break; |
| case BTA_AG_RFC_OPEN_EVT: |
| p_scb->state = BTA_AG_OPEN_ST; |
| bta_ag_rfc_open(p_scb, data); |
| bta_ag_sco_listen(p_scb, data); |
| break; |
| case BTA_AG_RFC_CLOSE_EVT: |
| p_scb->state = BTA_AG_INIT_ST; |
| bta_ag_rfc_fail(p_scb, data); |
| break; |
| case BTA_AG_SCO_OPEN_EVT: |
| bta_ag_sco_conn_open(p_scb, data); |
| break; |
| case BTA_AG_SCO_CLOSE_EVT: |
| bta_ag_sco_conn_close(p_scb, data); |
| break; |
| case BTA_AG_DISC_INT_RES_EVT: |
| bta_ag_disc_int_res(p_scb, data); |
| break; |
| case BTA_AG_DISC_OK_EVT: |
| bta_ag_rfc_do_open(p_scb, data); |
| break; |
| case BTA_AG_DISC_FAIL_EVT: |
| p_scb->state = BTA_AG_INIT_ST; |
| bta_ag_disc_fail(p_scb, data); |
| break; |
| case BTA_AG_COLLISION_EVT: |
| p_scb->state = BTA_AG_INIT_ST; |
| bta_ag_handle_collision(p_scb, data); |
| break; |
| default: |
| LOG_ERROR("unknown event %d at state %d", event, p_scb->state); |
| break; |
| } |
| break; |
| case BTA_AG_OPEN_ST: |
| switch (event) { |
| case BTA_AG_API_DEREGISTER_EVT: |
| p_scb->state = BTA_AG_CLOSING_ST; |
| bta_ag_start_close(p_scb, data); |
| bta_ag_start_dereg(p_scb, data); |
| break; |
| case BTA_AG_API_OPEN_EVT: |
| bta_ag_open_fail(p_scb, data); |
| break; |
| case BTA_AG_API_CLOSE_EVT: |
| p_scb->state = BTA_AG_CLOSING_ST; |
| bta_ag_start_close(p_scb, data); |
| break; |
| case BTA_AG_API_AUDIO_OPEN_EVT: |
| bta_ag_sco_open(p_scb, data); |
| break; |
| case BTA_AG_API_AUDIO_CLOSE_EVT: |
| bta_ag_sco_close(p_scb, data); |
| break; |
| case BTA_AG_API_RESULT_EVT: |
| bta_ag_result(p_scb, data); |
| break; |
| case BTA_AG_API_SETCODEC_EVT: |
| bta_ag_setcodec(p_scb, data); |
| break; |
| case BTA_AG_RFC_CLOSE_EVT: |
| p_scb->state = BTA_AG_INIT_ST; |
| bta_ag_rfc_close(p_scb, data); |
| break; |
| case BTA_AG_RFC_DATA_EVT: |
| bta_ag_rfc_data(p_scb, data); |
| break; |
| case BTA_AG_SCO_OPEN_EVT: |
| bta_ag_sco_conn_open(p_scb, data); |
| bta_ag_post_sco_open(p_scb, data); |
| break; |
| case BTA_AG_SCO_CLOSE_EVT: |
| bta_ag_sco_conn_close(p_scb, data); |
| bta_ag_post_sco_close(p_scb, data); |
| break; |
| case BTA_AG_DISC_ACP_RES_EVT: |
| bta_ag_disc_acp_res(p_scb, data); |
| break; |
| case BTA_AG_RING_TIMEOUT_EVT: |
| bta_ag_send_ring(p_scb, data); |
| break; |
| case BTA_AG_SVC_TIMEOUT_EVT: |
| p_scb->state = BTA_AG_CLOSING_ST; |
| bta_ag_start_close(p_scb, data); |
| break; |
| default: |
| LOG_ERROR("unknown event %d at state %d", event, p_scb->state); |
| break; |
| } |
| break; |
| case BTA_AG_CLOSING_ST: |
| switch (event) { |
| case BTA_AG_API_DEREGISTER_EVT: |
| bta_ag_start_dereg(p_scb, data); |
| break; |
| case BTA_AG_API_OPEN_EVT: |
| bta_ag_open_fail(p_scb, data); |
| break; |
| case BTA_AG_RFC_CLOSE_EVT: |
| p_scb->state = BTA_AG_INIT_ST; |
| bta_ag_rfc_close(p_scb, data); |
| break; |
| case BTA_AG_SCO_OPEN_EVT: |
| bta_ag_sco_conn_open(p_scb, data); |
| break; |
| case BTA_AG_SCO_CLOSE_EVT: |
| bta_ag_sco_conn_close(p_scb, data); |
| bta_ag_post_sco_close(p_scb, data); |
| break; |
| case BTA_AG_DISC_ACP_RES_EVT: |
| bta_ag_free_db(p_scb, data); |
| break; |
| case BTA_AG_DISC_INT_RES_EVT: |
| p_scb->state = BTA_AG_INIT_ST; |
| bta_ag_free_db(p_scb, data); |
| break; |
| default: |
| LOG_ERROR("unknown event %d at state %d", event, p_scb->state); |
| break; |
| } |
| break; |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_sm_execute |
| * |
| * Description State machine event handling function for AG |
| * |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void bta_ag_sm_execute(tBTA_AG_SCB* p_scb, uint16_t event, |
| const tBTA_AG_DATA& data) { |
| uint16_t previous_event = event; |
| uint8_t previous_state = p_scb->state; |
| |
| LOG_DEBUG( |
| "Execute AG event handle:0x%04x bd_addr:%s state:%s[0x%02x]" |
| " event:%s[0x%04x] result:%s[0x%02x]", |
| bta_ag_scb_to_idx(p_scb), PRIVATE_ADDRESS(p_scb->peer_addr), |
| bta_ag_state_str(p_scb->state), p_scb->state, bta_ag_evt_str(event), |
| event, bta_ag_res_str(data.api_result.result), data.api_result.result); |
| |
| bta_ag_better_state_machine(p_scb, event, data); |
| |
| if (p_scb->state != previous_state) { |
| LOG_DEBUG( |
| "State changed handle:0x%04x bd_addr:%s " |
| "state_change:%s[0x%02x]->%s[0x%02x]" |
| " event:%s[0x%04x] result:%s[0x%02x]", |
| bta_ag_scb_to_idx(p_scb), PRIVATE_ADDRESS(p_scb->peer_addr), |
| bta_ag_state_str(previous_state), previous_state, |
| bta_ag_state_str(p_scb->state), p_scb->state, |
| bta_ag_evt_str(previous_event), previous_event, |
| bta_ag_res_str(data.api_result.result), data.api_result.result); |
| } |
| } |
| |
| void bta_ag_sm_execute_by_handle(uint16_t handle, uint16_t event, |
| const tBTA_AG_DATA& data) { |
| tBTA_AG_SCB* p_scb = bta_ag_scb_by_idx(handle); |
| if (p_scb) { |
| LOG_DEBUG("AG state machine event:%s[0x%04x] handle:0x%04x", |
| bta_ag_evt_str(event), event, handle); |
| bta_ag_sm_execute(p_scb, event, data); |
| } |
| } |
| |
| /** |
| * Handles event from bta_sys_sendmsg(). It is here to support legacy alarm |
| * implementation that is mainly for timeouts. |
| * |
| * @param p_msg event message |
| * @return True to free p_msg, or False if p_msg is freed within this function |
| */ |
| bool bta_ag_hdl_event(BT_HDR_RIGID* p_msg) { |
| switch (p_msg->event) { |
| case BTA_AG_RING_TIMEOUT_EVT: |
| case BTA_AG_SVC_TIMEOUT_EVT: |
| bta_ag_sm_execute_by_handle(p_msg->layer_specific, p_msg->event, |
| tBTA_AG_DATA::kEmpty); |
| break; |
| default: |
| LOG(FATAL) << __func__ << ": bad event " << p_msg->event |
| << " layer_specific=" << p_msg->layer_specific; |
| break; |
| } |
| return true; |
| } |
