Google Git
Sign in
android / platform / system / bt / 73b4e5c4ba4c0c96a26ec84564cd9653da50a26c / . / bta / ag / bta_ag_main.cc
blob: f7bb8be2e995e929a485e21c564fe9201a23a018 [file] [log] [blame]
/******************************************************************************
*
* 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 <stack/include/bt_types.h>
#include <string.h>
#include "bta_ag_int.h"
#include "bta_api.h"
#include "bta_sys.h"
#include "osi/include/osi.h"
#include "utl.h"
/*****************************************************************************
* Constants and types
****************************************************************************/
/* state machine states */
enum { BTA_AG_INIT_ST, BTA_AG_OPENING_ST, BTA_AG_OPEN_ST, BTA_AG_CLOSING_ST };
/* state machine action enumeration list */
enum {
BTA_AG_REGISTER,
BTA_AG_DEREGISTER,
BTA_AG_START_OPEN,
BTA_AG_RFC_DO_OPEN,
BTA_AG_RFC_DO_CLOSE,
BTA_AG_START_DEREG,
BTA_AG_START_CLOSE,
BTA_AG_RFC_OPEN,
BTA_AG_OPEN_FAIL,
BTA_AG_RFC_ACP_OPEN,
BTA_AG_RFC_CLOSE,
BTA_AG_RFC_FAIL,
BTA_AG_RFC_DATA,
BTA_AG_DISC_INT_RES,
BTA_AG_DISC_FAIL,
BTA_AG_DISC_ACP_RES,
BTA_AG_FREE_DB,
BTA_AG_SCO_CONN_OPEN,
BTA_AG_SCO_CONN_CLOSE,
BTA_AG_SCO_LISTEN,
BTA_AG_SCO_OPEN,
BTA_AG_SCO_CLOSE,
BTA_AG_SCO_SHUTDOWN,
BTA_AG_POST_SCO_OPEN,
BTA_AG_POST_SCO_CLOSE,
BTA_AG_SVC_CONN_OPEN,
BTA_AG_RESULT,
BTA_AG_SETCODEC,
BTA_AG_SEND_RING,
BTA_AG_HANDLE_COLLISION,
BTA_AG_NUM_ACTIONS
};
#define BTA_AG_IGNORE BTA_AG_NUM_ACTIONS
/* type for action functions */
typedef void (*tBTA_AG_ACTION)(tBTA_AG_SCB* p_scb, const tBTA_AG_DATA& data);
#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";
}
}
/* action functions */
const tBTA_AG_ACTION bta_ag_action[] = {
bta_ag_register, bta_ag_deregister, bta_ag_start_open,
bta_ag_rfc_do_open, bta_ag_rfc_do_close, bta_ag_start_dereg,
bta_ag_start_close, bta_ag_rfc_open, bta_ag_open_fail,
bta_ag_rfc_acp_open, bta_ag_rfc_close, bta_ag_rfc_fail,
bta_ag_rfc_data, bta_ag_disc_int_res, bta_ag_disc_fail,
bta_ag_disc_acp_res, bta_ag_free_db, bta_ag_sco_conn_open,
bta_ag_sco_conn_close, bta_ag_sco_listen, bta_ag_sco_open,
bta_ag_sco_close, bta_ag_sco_shutdown, bta_ag_post_sco_open,
bta_ag_post_sco_close, bta_ag_svc_conn_open, bta_ag_result,
bta_ag_setcodec, bta_ag_send_ring, bta_ag_handle_collision};
static_assert(sizeof(bta_ag_action) / sizeof(tBTA_AG_ACTION) ==
BTA_AG_NUM_ACTIONS,
"bta_ag_action must handle all actions");
/* state table information */
#define BTA_AG_ACTIONS 2 /* number of actions */
#define BTA_AG_NEXT_STATE 2 /* position of next state */
#define BTA_AG_NUM_COLS 3 /* number of columns in state tables */
/* state table for init state */
const uint8_t bta_ag_st_init[][BTA_AG_NUM_COLS] = {
/* Event Action 1 Action 2 Next state */
/* API_REGISTER_EVT */ {BTA_AG_REGISTER, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* API_DEREGISTER_EVT */ {BTA_AG_DEREGISTER, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* API_OPEN_EVT */ {BTA_AG_START_OPEN, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* API_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* API_AUDIO_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* API_AUDIO_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* API_RESULT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* API_SETCODEC_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* RFC_OPEN_EVT */ {BTA_AG_RFC_ACP_OPEN, BTA_AG_SCO_LISTEN, BTA_AG_OPEN_ST},
/* RFC_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* RFC_SRV_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* RFC_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* SCO_OPEN_EVT */ {BTA_AG_SCO_CONN_OPEN, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* SCO_CLOSE_EVT */ {BTA_AG_SCO_CONN_CLOSE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* DISC_ACP_RES_EVT */ {BTA_AG_FREE_DB, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* DISC_INT_RES_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* DISC_OK_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* DISC_FAIL_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* RING_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* SVC_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* COLLISION_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}};
/* state table for opening state */
const uint8_t bta_ag_st_opening[][BTA_AG_NUM_COLS] = {
/* Event Action 1 Action 2 Next state */
/* API_REGISTER_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* API_DEREGISTER_EVT */
{BTA_AG_RFC_DO_CLOSE, BTA_AG_START_DEREG, BTA_AG_CLOSING_ST},
/* API_OPEN_EVT */ {BTA_AG_OPEN_FAIL, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* API_CLOSE_EVT */ {BTA_AG_RFC_DO_CLOSE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* API_AUDIO_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* API_AUDIO_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* API_RESULT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* API_SETCODEC_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* RFC_OPEN_EVT */ {BTA_AG_RFC_OPEN, BTA_AG_SCO_LISTEN, BTA_AG_OPEN_ST},
/* RFC_CLOSE_EVT */ {BTA_AG_RFC_FAIL, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* RFC_SRV_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* RFC_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* SCO_OPEN_EVT */ {BTA_AG_SCO_CONN_OPEN, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* SCO_CLOSE_EVT */
{BTA_AG_SCO_CONN_CLOSE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* DISC_ACP_RES_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* DISC_INT_RES_EVT */
{BTA_AG_DISC_INT_RES, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* DISC_OK_EVT */ {BTA_AG_RFC_DO_OPEN, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* DISC_FAIL_EVT */ {BTA_AG_DISC_FAIL, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* RING_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* SVC_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* COLLISION_EVT */
{BTA_AG_HANDLE_COLLISION, BTA_AG_IGNORE, BTA_AG_INIT_ST}};
/* state table for open state */
const uint8_t bta_ag_st_open[][BTA_AG_NUM_COLS] = {
/* Event Action 1 Action 2 Next state */
/* API_REGISTER_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* API_DEREGISTER_EVT */
{BTA_AG_START_CLOSE, BTA_AG_START_DEREG, BTA_AG_CLOSING_ST},
/* API_OPEN_EVT */ {BTA_AG_OPEN_FAIL, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* API_CLOSE_EVT */ {BTA_AG_START_CLOSE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* API_AUDIO_OPEN_EVT */ {BTA_AG_SCO_OPEN, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* API_AUDIO_CLOSE_EVT */ {BTA_AG_SCO_CLOSE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* API_RESULT_EVT */ {BTA_AG_RESULT, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* API_SETCODEC_EVT */ {BTA_AG_SETCODEC, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* RFC_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* RFC_CLOSE_EVT */ {BTA_AG_RFC_CLOSE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* RFC_SRV_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* RFC_DATA_EVT */ {BTA_AG_RFC_DATA, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* SCO_OPEN_EVT */
{BTA_AG_SCO_CONN_OPEN, BTA_AG_POST_SCO_OPEN, BTA_AG_OPEN_ST},
/* SCO_CLOSE_EVT */
{BTA_AG_SCO_CONN_CLOSE, BTA_AG_POST_SCO_CLOSE, BTA_AG_OPEN_ST},
/* DISC_ACP_RES_EVT */ {BTA_AG_DISC_ACP_RES, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* DISC_INT_RES_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* DISC_OK_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* DISC_FAIL_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* RING_TOUT_EVT */ {BTA_AG_SEND_RING, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* SVC_TOUT_EVT */ {BTA_AG_START_CLOSE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* COLLISION_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPEN_ST}};
/* state table for closing state */
const uint8_t bta_ag_st_closing[][BTA_AG_NUM_COLS] = {
/* Event Action 1 Action 2 Next state */
/* API_REGISTER_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* API_DEREGISTER_EVT */
{BTA_AG_START_DEREG, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* API_OPEN_EVT */ {BTA_AG_OPEN_FAIL, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* API_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* API_AUDIO_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* API_AUDIO_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* API_RESULT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* API_SETCODEC_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* RFC_OPEN_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* RFC_CLOSE_EVT */ {BTA_AG_RFC_CLOSE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* RFC_SRV_CLOSE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* RFC_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* SCO_OPEN_EVT */ {BTA_AG_SCO_CONN_OPEN, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* SCO_CLOSE_EVT */
{BTA_AG_SCO_CONN_CLOSE, BTA_AG_POST_SCO_CLOSE, BTA_AG_CLOSING_ST},
/* DISC_ACP_RES_EVT */ {BTA_AG_FREE_DB, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* DISC_INT_RES_EVT */ {BTA_AG_FREE_DB, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* DISC_OK_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* DISC_FAIL_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* RING_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* SVC_TOUT_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* COLLISION_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}};
constexpr size_t BTA_AG_NUM_EVENTS =
BTA_AG_MAX_EVT - BTA_SYS_EVT_START(BTA_ID_AG);
static_assert(sizeof(bta_ag_st_init) / BTA_AG_NUM_COLS == BTA_AG_NUM_EVENTS,
"bta_ag_st_init must handle all AG events");
static_assert(sizeof(bta_ag_st_opening) / BTA_AG_NUM_COLS == BTA_AG_NUM_EVENTS,
"bta_ag_st_opening must handle all AG events");
static_assert(sizeof(bta_ag_st_open) / BTA_AG_NUM_COLS == BTA_AG_NUM_EVENTS,
"bta_ag_st_open must handle all AG events");
static_assert(sizeof(bta_ag_st_closing) / BTA_AG_NUM_COLS == BTA_AG_NUM_EVENTS,
"bta_ag_st_closing must handle all AG events");
/* type for state table */
typedef const uint8_t (*tBTA_AG_ST_TBL)[BTA_AG_NUM_COLS];
/* state table */
const tBTA_AG_ST_TBL bta_ag_st_tbl[] = {bta_ag_st_init, bta_ag_st_opening,
bta_ag_st_open, bta_ag_st_closing};
/*****************************************************************************
* 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 = BTA_AG_CODEC_CVSD;
p_scb->sco_codec = BTA_AG_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,
.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;
}