| /****************************************************************************** |
| * |
| * 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 <cstddef> |
| |
| #include "bt_common.h" |
| #include "bta_ag_api.h" |
| #include "bta_ag_int.h" |
| #include "bta_api.h" |
| #include "btm_api.h" |
| #include "device/include/controller.h" |
| #include "device/include/esco_parameters.h" |
| #include "osi/include/osi.h" |
| #include "stack/include/btu.h" |
| #include "utl.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; |
| |
| APPL_TRACE_DEBUG( |
| "bta_ag_sco_disc_cback(): sco_idx: 0x%x p_cur_scb: 0x%08x sco.state: " |
| "%d", |
| sco_idx, bta_ag_cb.sco.p_curr_scb, bta_ag_cb.sco.state); |
| |
| APPL_TRACE_DEBUG( |
| "bta_ag_sco_disc_cback(): scb[0] addr: 0x%08x in_use: %u sco_idx: 0x%x " |
| " sco state: %u", |
| &bta_ag_cb.scb[0], bta_ag_cb.scb[0].in_use, bta_ag_cb.scb[0].sco_idx, |
| bta_ag_cb.scb[0].state); |
| APPL_TRACE_DEBUG( |
| "bta_ag_sco_disc_cback(): scb[1] addr: 0x%08x in_use: %u sco_idx: 0x%x " |
| " sco state: %u", |
| &bta_ag_cb.scb[1], bta_ag_cb.scb[1].in_use, bta_ag_cb.scb[1].sco_idx, |
| bta_ag_cb.scb[1].state); |
| |
| /* 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); |
| APPL_TRACE_DEBUG("%s: SCO index 0x%04x, status %d", __func__, |
| p_scb->sco_idx, status); |
| 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, uint8_t 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)(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) { |
| APPL_TRACE_DEBUG( |
| "%s: BEFORE codec_updated=%d, codec_fallback=%d, " |
| "sco_codec=%d, peer_codec=%d, msbc_settings=%d, device=%s", |
| __func__, p_scb->codec_updated, p_scb->codec_fallback, p_scb->sco_codec, |
| p_scb->peer_codecs, p_scb->codec_msbc_settings, |
| p_scb->peer_addr.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; |
| } |
| |
| esco_codec_t codec_index = ESCO_CODEC_CVSD; |
| /* 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) { |
| codec_index = ESCO_CODEC_MSBC_T2; |
| } else { |
| codec_index = ESCO_CODEC_MSBC_T1; |
| } |
| } |
| |
| /* Initialize eSCO parameters */ |
| enh_esco_params_t params = esco_parameters_for_codec(codec_index); |
| /* For CVSD */ |
| if (esco_codec == BTM_SCO_CODEC_CVSD) { |
| /* Use the applicable packet types |
| (3-EV3 not allowed due to errata 2363) */ |
| params.packet_types = |
| p_bta_ag_cfg->sco_pkt_types | ESCO_PKT_TYPES_MASK_NO_3_EV3; |
| if ((!(p_scb->features & BTA_AG_FEAT_ESCO)) || |
| (!(p_scb->peer_features & BTA_AG_PEER_FEAT_ESCO))) { |
| params.max_latency_ms = 10; |
| params.retransmission_effort = ESCO_RETRANSMISSION_POWER; |
| } |
| } |
| |
| /* If initiating, setup parameters to start SCO/eSCO connection */ |
| if (is_orig) { |
| bta_ag_cb.sco.is_local = true; |
| /* Set eSCO Mode */ |
| BTM_SetEScoMode(¶ms); |
| 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); |
| APPL_TRACE_API("%s: orig %d, inx 0x%04x, pkt types 0x%04x", __func__, |
| is_orig, p_scb->sco_idx, params.packet_types); |
| } else { |
| /* Not initiating, go to listen mode */ |
| tBTM_STATUS 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 (status == BTM_CMD_STARTED) { |
| BTM_RegForEScoEvts(p_scb->sco_idx, bta_ag_esco_connreq_cback); |
| } |
| |
| APPL_TRACE_API("%s: orig %d, inx 0x%04x, status 0x%x, pkt types 0x%04x", |
| __func__, is_orig, p_scb->sco_idx, status, |
| params.packet_types); |
| } |
| APPL_TRACE_DEBUG( |
| "%s: AFTER codec_updated=%d, codec_fallback=%d, " |
| "sco_codec=%d, peer_codec=%d, msbc_settings=%d, device=%s", |
| __func__, p_scb->codec_updated, p_scb->codec_fallback, p_scb->sco_codec, |
| p_scb->peer_codecs, p_scb->codec_msbc_settings, |
| p_scb->peer_addr.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 { |
| params = esco_parameters_for_codec(ESCO_CODEC_CVSD); |
| if ((!(p_scb->features & BTA_AG_FEAT_ESCO)) || |
| (!(p_scb->peer_features & BTA_AG_PEER_FEAT_ESCO))) { |
| params.max_latency_ms = 10; |
| params.retransmission_effort = ESCO_RETRANSMISSION_POWER; |
| } |
| } |
| |
| /* 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 */ |
| params = esco_parameters_for_codec(ESCO_CODEC_CVSD); |
| if ((!(p_scb->features & BTA_AG_FEAT_ESCO)) || |
| (!(p_scb->peer_features & BTA_AG_PEER_FEAT_ESCO))) { |
| params.max_latency_ms = 10; |
| params.retransmission_effort = ESCO_RETRANSMISSION_POWER; |
| } |
| |
| BTM_EScoConnRsp(p_scb->sco_idx, HCI_SUCCESS, ¶ms); |
| 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) { |
| APPL_TRACE_DEBUG("%s", __func__); |
| 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) { |
| APPL_TRACE_DEBUG("%s", __func__); |
| 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(WARNING) << __func__ |
| << ": Fail to read remote feature, skip codec negotiation"; |
| 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)) { |
| 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)) { |
| /* 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 */ |
| APPL_TRACE_DEBUG( |
| "use same codec type as previous SCO connection,skip codec " |
| "negotiation"); |
| bta_ag_sco_codec_nego(p_scb, true); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function bta_ag_sco_event |
| * |
| * Description |
| * |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| 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; |
| APPL_TRACE_EVENT("%s: index=0x%04x, device=%s, state=%s[%d], event=%s[%d]", |
| __func__, p_scb->sco_idx, |
| p_scb->peer_addr.ToString().c_str(), |
| 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: |
| APPL_TRACE_WARNING( |
| "%s: BTA_AG_SCO_SHUTDOWN_ST: Ignoring event %s[%d]", __func__, |
| 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 |
| */ |
| APPL_TRACE_WARNING("%s: BTA_AG_SCO_LISTEN_ST: Ignoring event %s[%d]", |
| __func__, 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: |
| APPL_TRACE_WARNING("%s: BTA_AG_SCO_LISTEN_ST: Ignoring event %s[%d]", |
| __func__, 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: |
| APPL_TRACE_WARNING("%s: BTA_AG_SCO_CODEC_ST: Ignoring event %s[%d]", |
| __func__, 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: |
| APPL_TRACE_WARNING("%s: BTA_AG_SCO_OPENING_ST: Ignoring event %s[%d]", |
| __func__, 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: |
| APPL_TRACE_WARNING("%s: BTA_AG_SCO_OPEN_CL_ST: Ignoring event %s[%d]", |
| __func__, 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: |
| APPL_TRACE_WARNING( |
| "%s: BTA_AG_SCO_OPEN_XFER_ST: Ignoring event %s[%d]", __func__, |
| 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: |
| APPL_TRACE_WARNING("%s: BTA_AG_SCO_OPEN_ST: Ignoring event %s[%d]", |
| __func__, 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: |
| APPL_TRACE_WARNING("%s: BTA_AG_SCO_CLOSING_ST: Ignoring event %s[%d]", |
| __func__, 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: |
| APPL_TRACE_WARNING( |
| "%s: BTA_AG_SCO_CLOSE_OP_ST: Ignoring event %s[%d]", __func__, |
| 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: |
| APPL_TRACE_WARNING( |
| "%s: BTA_AG_SCO_CLOSE_XFER_ST: Ignoring event %s[%d]", __func__, |
| 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: |
| APPL_TRACE_WARNING( |
| "%s: BTA_AG_SCO_SHUTTING_ST: Ignoring event %s[%d]", __func__, |
| bta_ag_sco_evt_str(event), event); |
| break; |
| } |
| break; |
| |
| default: |
| break; |
| } |
| if (p_sco->state != previous_state) { |
| APPL_TRACE_EVENT( |
| "%s: SCO_state_change: [%s(0x%02x)]->[%s(0x%02x)] " |
| "after event [%s(0x%02x)]", |
| __func__, 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__ << ": tranfer " << 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 */ |
| APPL_TRACE_DEBUG("%s: Succeeded for index 0x%04x, device %s", __func__, |
| 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 */ |
| APPL_TRACE_ERROR("%s: Failed for index 0x%04x, device %s", __func__, |
| 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; |
| } |
