/*******************************************************************************
**
** Function bta_av_sm_execute
**
** Description State machine event handling function for AV
**
**
** Returns void
**
*******************************************************************************/
void bta_av_sm_execute(tBTA_AV_CB *p_cb, UINT16 event, tBTA_AV_DATA *p_data)
{
tBTA_AV_ST_TBL state_table;
UINT8 action;
#if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
APPL_TRACE_EVENT4("AV event=0x%x(%s) state=%d(%s)",
event, bta_av_evt_code(event), p_cb->state, bta_av_st_code(p_cb->state));
#else
APPL_TRACE_EVENT2("AV event=0x%x state=%d", event, p_cb->state);
#endif
/* look up the state table for the current state */
state_table = bta_av_st_tbl[p_cb->state];
event &= 0x00FF;
/* set next state */
p_cb->state = state_table[event][BTA_AV_NEXT_STATE];
APPL_TRACE_EVENT1("next state=%d", p_cb->state);
/* execute action functions */
if ((action = state_table[event][BTA_AV_ACTION_COL]) != BTA_AV_IGNORE)
{
(*bta_av_action[action])(p_cb, p_data);
}
}
/*******************************************************************************
**
** Function bta_av_hdl_event
**
** Description Advanced audio/video main event handling function.
**
**
** Returns BOOLEAN
**
*******************************************************************************/
BOOLEAN bta_av_hdl_event(BT_HDR *p_msg)
{
UINT16 event = p_msg->event;
UINT16 first_event = BTA_AV_FIRST_NSM_EVT;
if (event > BTA_AV_LAST_EVT)
{
return TRUE; /* to free p_msg */
}
if(event >= first_event)
{
#if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
APPL_TRACE_VERBOSE2("AV nsm event=0x%x(%s)", event, bta_av_evt_code(event));
#else
APPL_TRACE_VERBOSE1("AV nsm event=0x%x", event);
#endif
/* non state machine events */
(*bta_av_nsm_act[event - BTA_AV_FIRST_NSM_EVT]) ((tBTA_AV_DATA *) p_msg);
#ifdef A2DP_SINK
if (event == BTA_AV_CI_SNK_DATA_READY_EVT)
{
APPL_TRACE_DEBUG0("not to free p_msg, media task uses it directly to avoid memory copy");
return FALSE;
}
#endif
}
else if (event >= BTA_AV_FIRST_SM_EVT && event <= BTA_AV_LAST_SM_EVT)
{
#if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
APPL_TRACE_VERBOSE2("AV sm event=0x%x(%s)", event, bta_av_evt_code(event));
#else
APPL_TRACE_VERBOSE1("AV sm event=0x%x", event);
#endif
/* state machine events */
bta_av_sm_execute(&bta_av_cb, p_msg->event, (tBTA_AV_DATA *) p_msg);
}
else
{
APPL_TRACE_VERBOSE1("handle=0x%x", p_msg->layer_specific);
/* stream state machine events */
bta_av_ssm_execute( bta_av_hndl_to_scb(p_msg->layer_specific),
p_msg->event, (tBTA_AV_DATA *) p_msg);
}
return TRUE;
}
/*******************************************************************************
**
** Function bta_av_ssm_execute
**
** Description Stream state machine event handling function for AV
**
**
** Returns void
**
*******************************************************************************/
void bta_av_ssm_execute(tBTA_AV_SCB *p_scb, UINT16 event, tBTA_AV_DATA *p_data)
{
tBTA_AV_SST_TBL state_table;
UINT8 action;
int i, xx;
if(p_scb == NULL)
{
/* this stream is not registered */
APPL_TRACE_EVENT("AV channel not registered");
return;
}
/* In case incoming connection is for VDP, we need to swap scb. */
/* When ACP_CONNECT_EVT was received, we put first available scb to */
/* to Incoming state. Later, when STR_CONFIG_IND_EVT is coming, we */
/* know if it is A2DP or VDP. */
if ((p_scb->state == BTA_AV_INIT_SST) && (event == BTA_AV_STR_CONFIG_IND_EVT))
{
for (xx = 0; xx < BTA_AV_NUM_STRS; xx++)
{
if (bta_av_cb.p_scb[xx])
{
if (bta_av_cb.p_scb[xx]->state == BTA_AV_INCOMING_SST)
{
bta_av_cb.p_scb[xx]->state = BTA_AV_INIT_SST;
bta_av_cb.p_scb[xx]->coll_mask = 0;
p_scb->state = BTA_AV_INCOMING_SST;
break;
}
}
}
}
if ((event != BTA_AV_STR_WRITE_CFM_EVT) && (event != BTA_AV_SRC_DATA_READY_EVT))
{
#if (defined(BTA_AV_DEBUG) && BTA_AV_DEBUG == TRUE)
APPL_TRACE_IMP("AV Sevent(0x%x)=0x%x(%s) state=%d(%s)",
p_scb->hndl, event, bta_av_evt_code(event), p_scb->state, bta_av_sst_code(p_scb->state));
#else
APPL_TRACE_IMP("AV Sevent=0x%x state=%d", event, p_scb->state);
#endif
}
/* look up the state table for the current state */
state_table = bta_av_sst_tbl[p_scb->state];
event -= BTA_AV_FIRST_SSM_EVT;
/* set next state */
p_scb->state = state_table[event][BTA_AV_SNEXT_STATE];
/* execute action functions */
for(i=0; i< BTA_AV_SACTIONS; i++)
{
if ((action = state_table[event][i]) != BTA_AV_SIGNORE)
{
(*p_scb->p_act_tbl[action])(p_scb, p_data);
}
else
break;
}
}
