/******************************************************************************
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*
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* Copyright 2003-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* This is the main implementation file for the BTA audio gateway.
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*
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******************************************************************************/
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#include <stack/include/bt_types.h>
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#include <string.h>
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#include "bta_ag_int.h"
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#include "bta_api.h"
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#include "bta_sys.h"
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#include "osi/include/osi.h"
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#include "utl.h"
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/*****************************************************************************
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* Constants and types
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****************************************************************************/
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/* state machine states */
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enum { BTA_AG_INIT_ST, BTA_AG_OPENING_ST, BTA_AG_OPEN_ST, BTA_AG_CLOSING_ST };
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/* state machine action enumeration list */
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enum {
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BTA_AG_REGISTER,
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BTA_AG_DEREGISTER,
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BTA_AG_START_OPEN,
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BTA_AG_RFC_DO_OPEN,
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BTA_AG_RFC_DO_CLOSE,
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BTA_AG_START_DEREG,
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BTA_AG_START_CLOSE,
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BTA_AG_RFC_OPEN,
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BTA_AG_OPEN_FAIL,
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BTA_AG_RFC_ACP_OPEN,
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BTA_AG_RFC_CLOSE,
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BTA_AG_RFC_FAIL,
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BTA_AG_RFC_DATA,
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BTA_AG_DISC_INT_RES,
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BTA_AG_DISC_FAIL,
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BTA_AG_DISC_ACP_RES,
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BTA_AG_FREE_DB,
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BTA_AG_SCO_CONN_OPEN,
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BTA_AG_SCO_CONN_CLOSE,
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BTA_AG_SCO_LISTEN,
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BTA_AG_SCO_OPEN,
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BTA_AG_SCO_CLOSE,
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BTA_AG_SCO_SHUTDOWN,
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BTA_AG_POST_SCO_OPEN,
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BTA_AG_POST_SCO_CLOSE,
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BTA_AG_SVC_CONN_OPEN,
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BTA_AG_RESULT,
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BTA_AG_SETCODEC,
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BTA_AG_SEND_RING,
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BTA_AG_HANDLE_COLLISION,
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BTA_AG_NUM_ACTIONS
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};
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#define BTA_AG_IGNORE BTA_AG_NUM_ACTIONS
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/* type for action functions */
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typedef void (*tBTA_AG_ACTION)(tBTA_AG_SCB* p_scb, const tBTA_AG_DATA& data);
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#define CASE_RETURN_STR(const) \
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case const: \
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return #const;
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static const char* bta_ag_res_str(tBTA_AG_RES result) {
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switch (result) {
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CASE_RETURN_STR(BTA_AG_SPK_RES)
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CASE_RETURN_STR(BTA_AG_MIC_RES)
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CASE_RETURN_STR(BTA_AG_INBAND_RING_RES)
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CASE_RETURN_STR(BTA_AG_CIND_RES)
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CASE_RETURN_STR(BTA_AG_BINP_RES)
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CASE_RETURN_STR(BTA_AG_IND_RES)
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CASE_RETURN_STR(BTA_AG_BVRA_RES)
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CASE_RETURN_STR(BTA_AG_CNUM_RES)
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CASE_RETURN_STR(BTA_AG_BTRH_RES)
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CASE_RETURN_STR(BTA_AG_CLCC_RES)
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CASE_RETURN_STR(BTA_AG_COPS_RES)
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CASE_RETURN_STR(BTA_AG_IN_CALL_RES)
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CASE_RETURN_STR(BTA_AG_IN_CALL_CONN_RES)
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CASE_RETURN_STR(BTA_AG_CALL_WAIT_RES)
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CASE_RETURN_STR(BTA_AG_OUT_CALL_ORIG_RES)
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CASE_RETURN_STR(BTA_AG_OUT_CALL_ALERT_RES)
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CASE_RETURN_STR(BTA_AG_OUT_CALL_CONN_RES)
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CASE_RETURN_STR(BTA_AG_CALL_CANCEL_RES)
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CASE_RETURN_STR(BTA_AG_END_CALL_RES)
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CASE_RETURN_STR(BTA_AG_IN_CALL_HELD_RES)
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CASE_RETURN_STR(BTA_AG_UNAT_RES)
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CASE_RETURN_STR(BTA_AG_MULTI_CALL_RES)
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CASE_RETURN_STR(BTA_AG_BIND_RES)
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CASE_RETURN_STR(BTA_AG_IND_RES_ON_DEMAND)
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default:
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return "Unknown AG Result";
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}
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}
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static const char* bta_ag_evt_str(uint16_t event) {
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switch (event) {
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CASE_RETURN_STR(BTA_AG_API_REGISTER_EVT)
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CASE_RETURN_STR(BTA_AG_API_DEREGISTER_EVT)
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CASE_RETURN_STR(BTA_AG_API_OPEN_EVT)
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CASE_RETURN_STR(BTA_AG_API_CLOSE_EVT)
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CASE_RETURN_STR(BTA_AG_API_AUDIO_OPEN_EVT)
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CASE_RETURN_STR(BTA_AG_API_AUDIO_CLOSE_EVT)
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CASE_RETURN_STR(BTA_AG_API_RESULT_EVT)
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CASE_RETURN_STR(BTA_AG_API_SETCODEC_EVT)
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CASE_RETURN_STR(BTA_AG_RFC_OPEN_EVT)
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CASE_RETURN_STR(BTA_AG_RFC_CLOSE_EVT)
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CASE_RETURN_STR(BTA_AG_RFC_SRV_CLOSE_EVT)
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CASE_RETURN_STR(BTA_AG_RFC_DATA_EVT)
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CASE_RETURN_STR(BTA_AG_SCO_OPEN_EVT)
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CASE_RETURN_STR(BTA_AG_SCO_CLOSE_EVT)
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CASE_RETURN_STR(BTA_AG_DISC_ACP_RES_EVT)
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CASE_RETURN_STR(BTA_AG_DISC_INT_RES_EVT)
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CASE_RETURN_STR(BTA_AG_DISC_OK_EVT)
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CASE_RETURN_STR(BTA_AG_DISC_FAIL_EVT)
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CASE_RETURN_STR(BTA_AG_RING_TIMEOUT_EVT)
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CASE_RETURN_STR(BTA_AG_SVC_TIMEOUT_EVT)
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CASE_RETURN_STR(BTA_AG_COLLISION_EVT)
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default:
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return "Unknown AG Event";
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}
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}
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static const char* bta_ag_state_str(uint8_t state) {
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switch (state) {
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CASE_RETURN_STR(BTA_AG_INIT_ST)
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CASE_RETURN_STR(BTA_AG_OPENING_ST)
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CASE_RETURN_STR(BTA_AG_OPEN_ST)
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CASE_RETURN_STR(BTA_AG_CLOSING_ST)
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default:
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return "Unknown AG State";
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}
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}
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/* action functions */
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const tBTA_AG_ACTION bta_ag_action[] = {
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bta_ag_register, bta_ag_deregister, bta_ag_start_open,
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bta_ag_rfc_do_open, bta_ag_rfc_do_close, bta_ag_start_dereg,
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bta_ag_start_close, bta_ag_rfc_open, bta_ag_open_fail,
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bta_ag_rfc_acp_open, bta_ag_rfc_close, bta_ag_rfc_fail,
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bta_ag_rfc_data, bta_ag_disc_int_res, bta_ag_disc_fail,
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bta_ag_disc_acp_res, bta_ag_free_db, bta_ag_sco_conn_open,
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bta_ag_sco_conn_close, bta_ag_sco_listen, bta_ag_sco_open,
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bta_ag_sco_close, bta_ag_sco_shutdown, bta_ag_post_sco_open,
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bta_ag_post_sco_close, bta_ag_svc_conn_open, bta_ag_result,
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bta_ag_setcodec, bta_ag_send_ring, bta_ag_handle_collision};
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static_assert(sizeof(bta_ag_action) / sizeof(tBTA_AG_ACTION) ==
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BTA_AG_NUM_ACTIONS,
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"bta_ag_action must handle all actions");
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/* state table information */
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#define BTA_AG_ACTIONS 2 /* number of actions */
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#define BTA_AG_NEXT_STATE 2 /* position of next state */
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#define BTA_AG_NUM_COLS 3 /* number of columns in state tables */
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/* state table for init state */
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const uint8_t bta_ag_st_init[][BTA_AG_NUM_COLS] = {
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/* Event Action 1 Action 2 Next state */
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/* API_REGISTER_EVT */ {BTA_AG_REGISTER, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* API_DEREGISTER_EVT */ {BTA_AG_DEREGISTER, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* API_OPEN_EVT */ {BTA_AG_START_OPEN, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* API_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* API_AUDIO_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* API_AUDIO_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* API_RESULT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* API_SETCODEC_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* RFC_OPEN_EVT */ {BTA_AG_RFC_ACP_OPEN, BTA_AG_SCO_LISTEN, BTA_AG_OPEN_ST},
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/* RFC_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* RFC_SRV_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* RFC_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* SCO_OPEN_EVT */ {BTA_AG_SCO_CONN_OPEN, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* SCO_CLOSE_EVT */ {BTA_AG_SCO_CONN_CLOSE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* DISC_ACP_RES_EVT */ {BTA_AG_FREE_DB, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* DISC_INT_RES_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* DISC_OK_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* DISC_FAIL_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* RING_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* SVC_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* COLLISION_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}};
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/* state table for opening state */
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const uint8_t bta_ag_st_opening[][BTA_AG_NUM_COLS] = {
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/* Event Action 1 Action 2 Next state */
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/* API_REGISTER_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* API_DEREGISTER_EVT */
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{BTA_AG_RFC_DO_CLOSE, BTA_AG_START_DEREG, BTA_AG_CLOSING_ST},
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/* API_OPEN_EVT */ {BTA_AG_OPEN_FAIL, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* API_CLOSE_EVT */ {BTA_AG_RFC_DO_CLOSE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* API_AUDIO_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* API_AUDIO_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* API_RESULT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* API_SETCODEC_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* RFC_OPEN_EVT */ {BTA_AG_RFC_OPEN, BTA_AG_SCO_LISTEN, BTA_AG_OPEN_ST},
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/* RFC_CLOSE_EVT */ {BTA_AG_RFC_FAIL, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* RFC_SRV_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* RFC_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* SCO_OPEN_EVT */ {BTA_AG_SCO_CONN_OPEN, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* SCO_CLOSE_EVT */
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{BTA_AG_SCO_CONN_CLOSE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* DISC_ACP_RES_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* DISC_INT_RES_EVT */
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{BTA_AG_DISC_INT_RES, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* DISC_OK_EVT */ {BTA_AG_RFC_DO_OPEN, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* DISC_FAIL_EVT */ {BTA_AG_DISC_FAIL, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* RING_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* SVC_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
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/* COLLISION_EVT */
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{BTA_AG_HANDLE_COLLISION, BTA_AG_IGNORE, BTA_AG_INIT_ST}};
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/* state table for open state */
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const uint8_t bta_ag_st_open[][BTA_AG_NUM_COLS] = {
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/* Event Action 1 Action 2 Next state */
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/* API_REGISTER_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* API_DEREGISTER_EVT */
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{BTA_AG_START_CLOSE, BTA_AG_START_DEREG, BTA_AG_CLOSING_ST},
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/* API_OPEN_EVT */ {BTA_AG_OPEN_FAIL, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* API_CLOSE_EVT */ {BTA_AG_START_CLOSE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* API_AUDIO_OPEN_EVT */ {BTA_AG_SCO_OPEN, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* API_AUDIO_CLOSE_EVT */ {BTA_AG_SCO_CLOSE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* API_RESULT_EVT */ {BTA_AG_RESULT, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* API_SETCODEC_EVT */ {BTA_AG_SETCODEC, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* RFC_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* RFC_CLOSE_EVT */ {BTA_AG_RFC_CLOSE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* RFC_SRV_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* RFC_DATA_EVT */ {BTA_AG_RFC_DATA, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* SCO_OPEN_EVT */
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{BTA_AG_SCO_CONN_OPEN, BTA_AG_POST_SCO_OPEN, BTA_AG_OPEN_ST},
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/* SCO_CLOSE_EVT */
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{BTA_AG_SCO_CONN_CLOSE, BTA_AG_POST_SCO_CLOSE, BTA_AG_OPEN_ST},
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/* DISC_ACP_RES_EVT */ {BTA_AG_DISC_ACP_RES, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* DISC_INT_RES_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* DISC_OK_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* DISC_FAIL_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* RING_TOUT_EVT */ {BTA_AG_SEND_RING, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
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/* SVC_TOUT_EVT */ {BTA_AG_START_CLOSE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* COLLISION_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST}};
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/* state table for closing state */
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const uint8_t bta_ag_st_closing[][BTA_AG_NUM_COLS] = {
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/* Event Action 1 Action 2 Next state */
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/* API_REGISTER_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* API_DEREGISTER_EVT */
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{BTA_AG_START_DEREG, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* API_OPEN_EVT */ {BTA_AG_OPEN_FAIL, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* API_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* API_AUDIO_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* API_AUDIO_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* API_RESULT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* API_SETCODEC_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* RFC_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* RFC_CLOSE_EVT */ {BTA_AG_RFC_CLOSE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* RFC_SRV_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* RFC_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* SCO_OPEN_EVT */ {BTA_AG_SCO_CONN_OPEN, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* SCO_CLOSE_EVT */
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{BTA_AG_SCO_CONN_CLOSE, BTA_AG_POST_SCO_CLOSE, BTA_AG_CLOSING_ST},
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/* DISC_ACP_RES_EVT */ {BTA_AG_FREE_DB, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* DISC_INT_RES_EVT */ {BTA_AG_FREE_DB, BTA_AG_IGNORE, BTA_AG_INIT_ST},
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/* DISC_OK_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* DISC_FAIL_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* RING_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* SVC_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
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/* COLLISION_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}};
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constexpr size_t BTA_AG_NUM_EVENTS =
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BTA_AG_MAX_EVT - BTA_SYS_EVT_START(BTA_ID_AG);
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static_assert(sizeof(bta_ag_st_init) / BTA_AG_NUM_COLS == BTA_AG_NUM_EVENTS,
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"bta_ag_st_init must handle all AG events");
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static_assert(sizeof(bta_ag_st_opening) / BTA_AG_NUM_COLS == BTA_AG_NUM_EVENTS,
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"bta_ag_st_opening must handle all AG events");
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static_assert(sizeof(bta_ag_st_open) / BTA_AG_NUM_COLS == BTA_AG_NUM_EVENTS,
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"bta_ag_st_open must handle all AG events");
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static_assert(sizeof(bta_ag_st_closing) / BTA_AG_NUM_COLS == BTA_AG_NUM_EVENTS,
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"bta_ag_st_closing must handle all AG events");
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/* type for state table */
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typedef const uint8_t (*tBTA_AG_ST_TBL)[BTA_AG_NUM_COLS];
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/* state table */
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const tBTA_AG_ST_TBL bta_ag_st_tbl[] = {bta_ag_st_init, bta_ag_st_opening,
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bta_ag_st_open, bta_ag_st_closing};
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/*****************************************************************************
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* Global data
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****************************************************************************/
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/* AG control block */
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tBTA_AG_CB bta_ag_cb;
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const tBTA_AG_DATA tBTA_AG_DATA::kEmpty = {};
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/*******************************************************************************
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*
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* Function bta_ag_scb_alloc
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*
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* Description Allocate an AG service control block.
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*
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*
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* Returns pointer to the scb, or NULL if none could be allocated.
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*
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******************************************************************************/
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static tBTA_AG_SCB* bta_ag_scb_alloc(void) {
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tBTA_AG_SCB* p_scb = &bta_ag_cb.scb[0];
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int i;
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for (i = 0; i < BTA_AG_MAX_NUM_CLIENTS; i++, p_scb++) {
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if (!p_scb->in_use) {
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/* initialize variables */
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p_scb->in_use = true;
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p_scb->sco_idx = BTM_INVALID_SCO_INDEX;
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p_scb->received_at_bac = false;
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p_scb->codec_updated = false;
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p_scb->codec_fallback = false;
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p_scb->peer_codecs = BTA_AG_CODEC_CVSD;
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p_scb->sco_codec = BTA_AG_CODEC_CVSD;
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p_scb->peer_version = HFP_HSP_VERSION_UNKNOWN;
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p_scb->hsp_version = HSP_VERSION_1_2;
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p_scb->peer_sdp_features = 0;
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/* set up timers */
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p_scb->ring_timer = alarm_new("bta_ag.scb_ring_timer");
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p_scb->collision_timer = alarm_new("bta_ag.scb_collision_timer");
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p_scb->codec_negotiation_timer =
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alarm_new("bta_ag.scb_codec_negotiation_timer");
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/* set eSCO mSBC setting to T2 as the preferred */
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p_scb->codec_msbc_settings = BTA_AG_SCO_MSBC_SETTINGS_T2;
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APPL_TRACE_DEBUG("bta_ag_scb_alloc %d", bta_ag_scb_to_idx(p_scb));
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break;
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}
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}
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if (i == BTA_AG_MAX_NUM_CLIENTS) {
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/* out of scbs */
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p_scb = nullptr;
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APPL_TRACE_WARNING("%s: Out of scbs", __func__);
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}
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return p_scb;
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}
|
|
/*******************************************************************************
|
*
|
* 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,
|
.api_open.sec_mask = p_scb->cli_sec_mask};
|
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_SEC sec_mask,
|
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.sec_mask = sec_mask;
|
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) {
|
APPL_TRACE_DEBUG("bta_ag_api_result: p_scb 0x%08x ", p_scb);
|
bta_ag_sm_execute(p_scb, static_cast<uint16_t>(BTA_AG_API_RESULT_EVT),
|
event_data);
|
}
|
} 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) {
|
APPL_TRACE_DEBUG("bta_ag_api_result p_scb 0x%08x ", p_scb);
|
bta_ag_sm_execute(p_scb, static_cast<uint16_t>(BTA_AG_API_RESULT_EVT),
|
event_data);
|
}
|
}
|
}
|
}
|
|
/*******************************************************************************
|
*
|
* 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) {
|
tBTA_AG_ST_TBL state_table;
|
uint8_t action;
|
int i;
|
uint16_t previous_event = event;
|
uint8_t previous_state = p_scb->state;
|
|
APPL_TRACE_EVENT(
|
"%s: handle=0x%04x, bd_addr=%s, state=%s(0x%02x), "
|
"event=%s(0x%04x), result=%s(0x%02x)",
|
__func__, bta_ag_scb_to_idx(p_scb), p_scb->peer_addr.ToString().c_str(),
|
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);
|
|
event &= 0x00FF;
|
if (event >= (BTA_AG_MAX_EVT & 0x00FF)) {
|
APPL_TRACE_ERROR("%s: event out of range, ignored", __func__);
|
return;
|
}
|
|
/* look up the state table for the current state */
|
state_table = bta_ag_st_tbl[p_scb->state];
|
|
/* set next state */
|
p_scb->state = state_table[event][BTA_AG_NEXT_STATE];
|
|
/* execute action functions */
|
for (i = 0; i < BTA_AG_ACTIONS; i++) {
|
action = state_table[event][i];
|
if (action != BTA_AG_IGNORE) {
|
(*bta_ag_action[action])(p_scb, data);
|
} else {
|
break;
|
}
|
}
|
if (p_scb->state != previous_state) {
|
APPL_TRACE_EVENT(
|
"%s: handle=0x%04x, bd_addr=%s, state_change[%s(0x%02x)]->[%s(0x%02x)],"
|
" event[%s(0x%04x)], result[%s(0x%02x)]",
|
__func__, bta_ag_scb_to_idx(p_scb), p_scb->peer_addr.ToString().c_str(),
|
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) {
|
APPL_TRACE_DEBUG("%s: p_scb 0x%08x ", __func__, p_scb);
|
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* 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;
|
}
|
