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/******************************************************************************
*
* Copyright (C) 2003-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This is the main implementation file for the BTA audio gateway.
*
******************************************************************************/
#include <string.h>
#include "bta_api.h"
#include "bta_sys.h"
#include "bta_ag_co.h"
#include "bta_ag_int.h"
#include "bd.h"
/*****************************************************************************
** Constants and types
*****************************************************************************/
#ifndef BTA_AG_DEBUG
#define BTA_AG_DEBUG FALSE
#endif
#if BTA_AG_DEBUG == TRUE
static char *bta_ag_evt_str(UINT16 event, tBTA_AG_RES result);
static char *bta_ag_state_str(UINT8 state);
#endif
/* 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_CI_SCO_DATA,
BTA_AG_CI_RX_DATA,
BTA_AG_RCVD_SLC_READY,
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, tBTA_AG_DATA *p_data);
/* 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_ci_sco_data,
bta_ag_ci_rx_data,
bta_ag_rcvd_slc_ready
};
/* 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 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},
/* CI_RX_WRITE_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},
/* CI_SCO_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST},
/* CI_SLC_READY_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_INIT_ST}
};
/* state table for opening state */
const UINT8 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},
/* CI_RX_WRITE_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_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},
/* CI_SCO_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST},
/* CI_SLC_READY_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_OPENING_ST}
};
/* state table for open state */
const UINT8 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},
/* CI_RX_WRITE_EVT */ {BTA_AG_CI_RX_DATA, 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},
/* CI_SCO_DATA_EVT */ {BTA_AG_CI_SCO_DATA, BTA_AG_IGNORE, BTA_AG_OPEN_ST},
/* CI_SLC_READY_EVT */ {BTA_AG_RCVD_SLC_READY, BTA_AG_IGNORE, BTA_AG_OPEN_ST}
};
/* state table for closing state */
const UINT8 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},
/* CI_RX_WRITE_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},
/* CI_SCO_DATA_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST},
/* CI_SLC_READY_EVT */ {BTA_AG_IGNORE, BTA_AG_IGNORE, BTA_AG_CLOSING_ST}
};
/* type for state table */
typedef const UINT8 (*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 */
#if BTA_DYNAMIC_MEMORY == FALSE
tBTA_AG_CB bta_ag_cb;
#endif
/*******************************************************************************
**
** Function bta_ag_timer_cback
**
** Description AG timer callback.
**
**
** Returns void
**
*******************************************************************************/
static void bta_ag_timer_cback(void *p)
{
BT_HDR *p_buf;
TIMER_LIST_ENT *p_tle = (TIMER_LIST_ENT *) p;
if ((p_buf = (BT_HDR *) GKI_getbuf(sizeof(BT_HDR))) != NULL)
{
p_buf->event = p_tle->event;
p_buf->layer_specific = bta_ag_scb_to_idx((tBTA_AG_SCB *) p_tle->param);
bta_sys_sendmsg(p_buf);
}
}
/*******************************************************************************
**
** 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_NUM_SCB; i++, p_scb++)
{
if (!p_scb->in_use)
{
/* initialize variables */
p_scb->in_use = TRUE;
p_scb->sco_idx = BTM_INVALID_SCO_INDEX;
/* set up timers */
p_scb->act_timer.param = (UINT32) p_scb;
p_scb->act_timer.p_cback = bta_ag_timer_cback;
APPL_TRACE_DEBUG1("bta_ag_scb_alloc %d", bta_ag_scb_to_idx(p_scb));
break;
}
}
if (i == BTA_AG_NUM_SCB)
{
/* out of scbs */
p_scb = NULL;
APPL_TRACE_WARNING0("Out of ag scbs");
}
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 idx;
BOOLEAN allocated = FALSE;
APPL_TRACE_DEBUG1("bta_ag_scb_dealloc %d", bta_ag_scb_to_idx(p_scb));
/* stop timers */
bta_sys_stop_timer(&p_scb->act_timer);
#if (BTM_WBS_INCLUDED == TRUE)
bta_sys_stop_timer(&p_scb->cn_timer);
#endif
/* initialize control block */
memset(p_scb, 0, sizeof(tBTA_AG_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_NUM_SCB; idx++)
{
if (bta_ag_cb.scb[idx].in_use)
{
allocated = TRUE;
break;
}
}
if (!allocated)
{
(*bta_ag_cb.p_cback)(BTA_AG_DISABLE_EVT, NULL);
}
}
}
/*******************************************************************************
**
** Function bta_ag_scb_to_idx
**
** Description Given a pointer to an scb, return its index.
**
**
** Returns Index of scb.
**
*******************************************************************************/
UINT16 bta_ag_scb_to_idx(tBTA_AG_SCB *p_scb)
{
/* use array arithmetic to determine index */
return ((UINT16) (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 idx)
{
tBTA_AG_SCB *p_scb;
/* verify index */
if (idx > 0 && idx <= BTA_AG_NUM_SCB)
{
p_scb = &bta_ag_cb.scb[idx - 1];
if (!p_scb->in_use)
{
p_scb = NULL;
APPL_TRACE_WARNING1("ag scb idx %d not allocated", idx);
}
}
else
{
p_scb = NULL;
APPL_TRACE_DEBUG1("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 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 bta_ag_idx_by_bdaddr(BD_ADDR peer_addr)
{
tBTA_AG_SCB *p_scb = &bta_ag_cb.scb[0];
UINT16 i;
if (peer_addr != NULL)
{
for (i = 0; i < BTA_AG_NUM_SCB; i++, p_scb++)
{
if (p_scb->in_use && !bdcmp(peer_addr, p_scb->peer_addr))
{
return (i + 1);
}
}
}
/* no scb found */
APPL_TRACE_WARNING0("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.
**
*******************************************************************************/
BOOLEAN bta_ag_other_scb_open(tBTA_AG_SCB *p_curr_scb)
{
tBTA_AG_SCB *p_scb = &bta_ag_cb.scb[0];
int i;
for (i = 0; i < BTA_AG_NUM_SCB; 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_DEBUG0("No other ag scb open");
return FALSE;
}
/*******************************************************************************
**
** Function bta_ag_get_other_idle_scb
**
** Description Return other scb if it is in INIT st.
**
**
** Returns Pointer to other scb if INIT st, NULL otherwise.
**
*******************************************************************************/
tBTA_AG_SCB *bta_ag_get_other_idle_scb (tBTA_AG_SCB *p_curr_scb)
{
tBTA_AG_SCB *p_scb = &bta_ag_cb.scb[0];
UINT8 xx;
for (xx = 0; xx < BTA_AG_NUM_SCB; xx++, p_scb++)
{
if (p_scb->in_use && (p_scb != p_curr_scb) && (p_scb->state == BTA_AG_INIT_ST))
{
return p_scb;
}
}
/* no other scb found */
APPL_TRACE_DEBUG0("bta_ag_get_other_idle_scb: No idle AG scb");
return NULL;
}
/*******************************************************************************
**
** Function bta_ag_colli_timer_cback
**
** Description AG connection collision timer callback
**
**
** Returns void
**
*******************************************************************************/
static void bta_ag_colli_timer_cback (TIMER_LIST_ENT *p_tle)
{
tBTA_AG_SCB *p_scb;
APPL_TRACE_DEBUG0 ("bta_ag_colli_timer_cback");
if (p_tle)
{
p_scb = (tBTA_AG_SCB *)p_tle->param;
if (p_scb)
{
p_scb->colli_tmr_on = FALSE;
/* If the peer haven't opened AG connection */
/* we will restart opening process. */
bta_ag_resume_open (p_scb);
}
}
}
/*******************************************************************************
**
** Function bta_ag_collision_cback
**
** Description Get notified about collision.
**
**
** Returns void
**
*******************************************************************************/
void bta_ag_collision_cback (tBTA_SYS_CONN_STATUS status, UINT8 id,
UINT8 app_id, BD_ADDR peer_addr)
{
UINT16 handle;
tBTA_AG_SCB *p_scb;
/* Check if we have opening scb for the peer device. */
handle = bta_ag_idx_by_bdaddr (peer_addr);
p_scb = bta_ag_scb_by_idx (handle);
if (p_scb && (p_scb->state == BTA_AG_OPENING_ST))
{
if (id == BTA_ID_SYS) /* ACL collision */
{
APPL_TRACE_WARNING0 ("AG found collision (ACL) ...");
}
else if (id == BTA_ID_AG) /* RFCOMM collision */
{
APPL_TRACE_WARNING0 ("AG found collision (RFCOMM) ...");
}
else
{
APPL_TRACE_WARNING0 ("AG found collision (\?\?\?) ...");
}
p_scb->state = BTA_AG_INIT_ST;
/* Cancel SDP if it had been started. */
if(p_scb->p_disc_db)
{
(void)SDP_CancelServiceSearch (p_scb->p_disc_db);
bta_ag_free_db(p_scb, NULL);
}
/* reopen registered servers */
/* Collision may be detected before or after we close servers. */
if (bta_ag_is_server_closed (p_scb))
bta_ag_start_servers(p_scb, p_scb->reg_services);
/* Start timer to han */
p_scb->colli_timer.p_cback = (TIMER_CBACK*)&bta_ag_colli_timer_cback;
p_scb->colli_timer.param = (INT32)p_scb;
bta_sys_start_timer(&p_scb->colli_timer, 0, BTA_AG_COLLISION_TIMER);
p_scb->colli_tmr_on = TRUE;
}
}
/*******************************************************************************
**
** Function bta_ag_resume_open
**
** Description Resume opening process.
**
**
** Returns void
**
*******************************************************************************/
void bta_ag_resume_open (tBTA_AG_SCB *p_scb)
{
if (p_scb)
{
APPL_TRACE_DEBUG1 ("bta_ag_resume_open, Handle(%d)", bta_ag_scb_to_idx(p_scb));
/* resume opening process. */
if (p_scb->state == BTA_AG_INIT_ST)
{
p_scb->state = BTA_AG_OPENING_ST;
bta_ag_start_open (p_scb, NULL);
}
}
else
{
APPL_TRACE_ERROR0 ("bta_ag_resume_open, Null p_scb");
}
}
/*******************************************************************************
**
** Function bta_ag_api_enable
**
** Description Handle an API enable event.
**
**
** Returns void
**
*******************************************************************************/
static void bta_ag_api_enable(tBTA_AG_DATA *p_data)
{
/* initialize control block */
memset(&bta_ag_cb, 0, sizeof(tBTA_AG_CB));
/* store callback function */
bta_ag_cb.p_cback = p_data->api_enable.p_cback;
bta_ag_cb.parse_mode = p_data->api_enable.parse_mode;
/* call init call-out */
bta_ag_co_init();
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, NULL);
}
/*******************************************************************************
**
** Function bta_ag_api_disable
**
** Description Handle an API disable event.
**
**
** Returns void
**
*******************************************************************************/
static void bta_ag_api_disable(tBTA_AG_DATA *p_data)
{
/* deregister all scbs in use */
tBTA_AG_SCB *p_scb = &bta_ag_cb.scb[0];
BOOLEAN do_dereg = FALSE;
int i;
if (!bta_sys_is_register (BTA_ID_AG))
{
APPL_TRACE_ERROR0("BTA AG is already disabled, ignoring ...");
return;
}
/* De-register with BTA system manager */
GKI_sched_lock();
bta_sys_deregister(BTA_ID_AG);
GKI_sched_unlock();
for (i = 0; i < BTA_AG_NUM_SCB; i++, p_scb++)
{
if (p_scb->in_use)
{
bta_ag_sm_execute(p_scb, BTA_AG_API_DEREGISTER_EVT, p_data);
do_dereg = TRUE;
}
}
if (!do_dereg)
{
/* Done, send callback evt to app */
(*bta_ag_cb.p_cback)(BTA_AG_DISABLE_EVT, NULL);
}
bta_sys_collision_register (BTA_ID_AG, NULL);
}
/*******************************************************************************
**
** Function bta_ag_api_register
**
** Description Handle an API event registers a new service.
**
**
** Returns void
**
*******************************************************************************/
static void bta_ag_api_register(tBTA_AG_DATA *p_data)
{
tBTA_AG_SCB *p_scb;
tBTA_AG_REGISTER reg;
/* allocate an scb */
if ((p_scb = bta_ag_scb_alloc()) != NULL)
{
bta_ag_sm_execute(p_scb, p_data->hdr.event, p_data);
}
else
{
reg.status = BTA_AG_FAIL_RESOURCES;
(*bta_ag_cb.p_cback)(BTA_AG_REGISTER_EVT, (tBTA_AG *) &reg);
}
}
/*******************************************************************************
**
** Function bta_ag_api_result
**
** Description Handle an API result event.
**
**
** Returns void
**
*******************************************************************************/
static void bta_ag_api_result(tBTA_AG_DATA *p_data)
{
tBTA_AG_SCB *p_scb;
int i;
if (p_data->hdr.layer_specific != BTA_AG_HANDLE_ALL)
{
if ((p_scb = bta_ag_scb_by_idx(p_data->hdr.layer_specific)) != NULL)
{
bta_ag_sm_execute(p_scb, BTA_AG_API_RESULT_EVT, p_data);
}
}
else
{
for (i = 0, p_scb = &bta_ag_cb.scb[0]; i < BTA_AG_NUM_SCB; i++, p_scb++)
{
if (p_scb->in_use)
{
bta_ag_sm_execute(p_scb, BTA_AG_API_RESULT_EVT, p_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 event, tBTA_AG_DATA *p_data)
{
tBTA_AG_ST_TBL state_table;
UINT8 action;
int i;
#if BTA_AG_DEBUG == TRUE
UINT16 in_event = event;
UINT8 in_state = p_scb->state;
/* Ignore displaying of AT results when not connected (Ignored in state machine) */
if (in_event != BTA_AG_API_RESULT_EVT || p_scb->state == BTA_AG_OPEN_ST)
{
APPL_TRACE_EVENT5("AG evt (hdl 0x%04x): State %d (%s), Event 0x%04x (%s)",
bta_ag_scb_to_idx(p_scb),
p_scb->state, bta_ag_state_str(p_scb->state),
event, bta_ag_evt_str(event, p_data->api_result.result));
}
#else
APPL_TRACE_EVENT3("AG evt (hdl 0x%04x): State %d, Event 0x%04x",
bta_ag_scb_to_idx(p_scb), p_scb->state, event);
#endif
event &= 0x00FF;
if (event >= (BTA_AG_MAX_EVT & 0x00FF))
{
APPL_TRACE_ERROR0("AG evt out of range, ignoring...");
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++)
{
if ((action = state_table[event][i]) != BTA_AG_IGNORE)
{
(*bta_ag_action[action])(p_scb, p_data);
}
else
{
break;
}
}
#if BTA_AG_DEBUG == TRUE
if (p_scb->state != in_state)
{
APPL_TRACE_EVENT3("BTA AG State Change: [%s] -> [%s] after Event [%s]",
bta_ag_state_str(in_state),
bta_ag_state_str(p_scb->state),
bta_ag_evt_str(in_event, p_data->api_result.result));
}
#endif
}
/*******************************************************************************
**
** Function bta_ag_hdl_event
**
** Description Data gateway main event handling function.
**
**
** Returns BOOLEAN
**
*******************************************************************************/
BOOLEAN bta_ag_hdl_event(BT_HDR *p_msg)
{
tBTA_AG_SCB *p_scb;
switch (p_msg->event)
{
/* handle enable event */
case BTA_AG_API_ENABLE_EVT:
bta_ag_api_enable((tBTA_AG_DATA *) p_msg);
break;
/* handle disable event */
case BTA_AG_API_DISABLE_EVT:
bta_ag_api_disable((tBTA_AG_DATA *) p_msg);
break;
/* handle register event */
case BTA_AG_API_REGISTER_EVT:
bta_ag_api_register((tBTA_AG_DATA *) p_msg);
break;
/* handle result event */
case BTA_AG_API_RESULT_EVT:
bta_ag_api_result((tBTA_AG_DATA *) p_msg);
break;
/* all others reference scb by handle */
default:
if ((p_scb = bta_ag_scb_by_idx(p_msg->layer_specific)) != NULL)
{
bta_ag_sm_execute(p_scb, p_msg->event, (tBTA_AG_DATA *) p_msg);
}
break;
}
return TRUE;
}
#if BTA_AG_DEBUG == TRUE
static char *bta_ag_evt_str(UINT16 event, tBTA_AG_RES result)
{
switch (event)
{
case BTA_AG_API_REGISTER_EVT:
return "Register Request";
case BTA_AG_API_DEREGISTER_EVT:
return "Deregister Request";
case BTA_AG_API_OPEN_EVT:
return "Open SLC Request";
case BTA_AG_API_CLOSE_EVT:
return "Close SLC Request";
case BTA_AG_API_AUDIO_OPEN_EVT:
return "Open Audio Request";
case BTA_AG_API_AUDIO_CLOSE_EVT:
return "Close Audio Request";
case BTA_AG_API_RESULT_EVT:
switch (result)
{
case BTA_AG_SPK_RES: return ("AT Result BTA_AG_SPK_RES");
case BTA_AG_MIC_RES: return ("AT Result BTA_AG_MIC_RES");
case BTA_AG_INBAND_RING_RES: return ("AT Result BTA_AG_INBAND_RING_RES");
case BTA_AG_CIND_RES: return ("AT Result BTA_AG_CIND_RES");
case BTA_AG_BINP_RES: return ("AT Result BTA_AG_BINP_RES");
case BTA_AG_IND_RES: return ("AT Result BTA_AG_IND_RES");
case BTA_AG_BVRA_RES: return ("AT Result BTA_AG_BVRA_RES");
case BTA_AG_CNUM_RES: return ("AT Result BTA_AG_CNUM_RES");
case BTA_AG_BTRH_RES: return ("AT Result BTA_AG_BTRH_RES");
case BTA_AG_CLCC_RES: return ("AT Result BTA_AG_CLCC_RES");
case BTA_AG_COPS_RES: return ("AT Result BTA_AG_COPS_RES");
case BTA_AG_IN_CALL_RES: return ("AT Result BTA_AG_IN_CALL_RES");
case BTA_AG_IN_CALL_CONN_RES: return ("AT Result BTA_AG_IN_CALL_CONN_RES");
case BTA_AG_CALL_WAIT_RES: return ("AT Result BTA_AG_CALL_WAIT_RES");
case BTA_AG_OUT_CALL_ORIG_RES: return ("AT Result BTA_AG_OUT_CALL_ORIG_RES");
case BTA_AG_OUT_CALL_ALERT_RES: return ("AT Result BTA_AG_OUT_CALL_ALERT_RES");
case BTA_AG_OUT_CALL_CONN_RES: return ("AT Result BTA_AG_OUT_CALL_CONN_RES");
case BTA_AG_CALL_CANCEL_RES: return ("AT Result BTA_AG_CALL_CANCEL_RES");
case BTA_AG_END_CALL_RES: return ("AT Result BTA_AG_END_CALL_RES");
case BTA_AG_UNAT_RES: return ("AT Result BTA_AG_UNAT_RES");
default: return ("Unknown AG Result");
}
case BTA_AG_API_SETCODEC_EVT:
return "Set Codec Request";
case BTA_AG_RFC_OPEN_EVT:
return "RFC Opened";
case BTA_AG_RFC_CLOSE_EVT:
return "RFC Closed";
case BTA_AG_RFC_SRV_CLOSE_EVT:
return "RFC SRV Closed";
case BTA_AG_RFC_DATA_EVT:
return "RFC Data";
case BTA_AG_SCO_OPEN_EVT:
return "Audio Opened";
case BTA_AG_SCO_CLOSE_EVT:
return "Audio Closed";
case BTA_AG_DISC_ACP_RES_EVT:
return "Discovery ACP Result";
case BTA_AG_DISC_INT_RES_EVT:
return "Discovery INT Result";
case BTA_AG_DISC_OK_EVT:
return "Discovery OK";
case BTA_AG_DISC_FAIL_EVT:
return "Discovery Failed";
case BTA_AG_CI_RX_WRITE_EVT:
return "CI RX Write";
case BTA_AG_RING_TOUT_EVT:
return "Ring Timeout";
case BTA_AG_SVC_TOUT_EVT:
return "Service Timeout";
case BTA_AG_API_ENABLE_EVT:
return "Enable AG";
case BTA_AG_API_DISABLE_EVT:
return "Disable AG";
case BTA_AG_CI_SCO_DATA_EVT:
return "SCO data Callin";
case BTA_AG_CI_SLC_READY_EVT:
return "SLC Ready Callin";
default:
return "Unknown AG Event";
}
}
static char *bta_ag_state_str(UINT8 state)
{
switch (state)
{
case BTA_AG_INIT_ST:
return "Initial";
case BTA_AG_OPENING_ST:
return "Opening";
case BTA_AG_OPEN_ST:
return "Open";
case BTA_AG_CLOSING_ST:
return "Closing";
default:
return "Unknown AG State";
}
}
#endif