/******************************************************************************
**
** MAIN PARSING FUNCTION
**
**
*******************************************************************************/
void bta_hf_client_at_parse(char *buf, unsigned int len)
{
APPL_TRACE_DEBUG("%s offset: %u len: %u", __FUNCTION__, bta_hf_client_cb.scb.at_cb.offset, len);
if (len + bta_hf_client_cb.scb.at_cb.offset > BTA_HF_CLIENT_AT_PARSER_MAX_LEN) {
unsigned int tmp = bta_hf_client_cb.scb.at_cb.offset;
unsigned int space_left = BTA_HF_CLIENT_AT_PARSER_MAX_LEN - bta_hf_client_cb.scb.at_cb.offset;
char *tmp_buff = osi_malloc(BTA_HF_CLIENT_AT_PARSER_MAX_LEN);
if (tmp_buff == NULL) {
APPL_TRACE_ERROR("No mem %s", __FUNCTION__);
return;
}
APPL_TRACE_DEBUG("%s overrun, trying to recover", __FUNCTION__);
/* fill up parser buffer */
memcpy(bta_hf_client_cb.scb.at_cb.buf + bta_hf_client_cb.scb.at_cb.offset, buf, space_left);
len -= space_left;
buf += space_left;
bta_hf_client_cb.scb.at_cb.offset += space_left;
/* find end of last complete command before proceeding */
while (bta_hf_client_check_at_complete() == FALSE) {
if (bta_hf_client_cb.scb.at_cb.offset == 0) {
APPL_TRACE_ERROR("HFPClient: AT parser buffer overrun, disconnecting");
bta_hf_client_at_reset();
bta_hf_client_sm_execute(BTA_HF_CLIENT_API_CLOSE_EVT, NULL);
osi_free(tmp_buff);
return;
}
bta_hf_client_cb.scb.at_cb.offset--;
}
/* cut buffer to complete AT event and keep cut data */
tmp += space_left - bta_hf_client_cb.scb.at_cb.offset;
memcpy(tmp_buff, bta_hf_client_cb.scb.at_cb.buf + bta_hf_client_cb.scb.at_cb.offset, tmp);
bta_hf_client_cb.scb.at_cb.buf[bta_hf_client_cb.scb.at_cb.offset] = '\0';
/* parse */
bta_hf_client_at_parse_start();
bta_hf_client_at_clear_buf();
/* recover cut data */
memcpy(bta_hf_client_cb.scb.at_cb.buf, tmp_buff, tmp);
bta_hf_client_cb.scb.at_cb.offset += tmp;
osi_free(tmp_buff);
}
memcpy(bta_hf_client_cb.scb.at_cb.buf + bta_hf_client_cb.scb.at_cb.offset, buf, len);
bta_hf_client_cb.scb.at_cb.offset += len;
/* If last event is complete, parsing can be started */
if (bta_hf_client_check_at_complete() == TRUE) {
bta_hf_client_at_parse_start();
bta_hf_client_at_clear_buf();
}
}
static void bta_hf_client_at_resp_timer_cback (TIMER_LIST_ENT *p_tle)
{
if (p_tle) {
bta_hf_client_cb.scb.at_cb.resp_timer_on = FALSE;
APPL_TRACE_ERROR("HFPClient: AT response timeout, disconnecting");
bta_hf_client_sm_execute(BTA_HF_CLIENT_API_CLOSE_EVT, NULL);
}
}
/*******************************************************************************
**
** Function bta_hf_client_do_disc
**
** Description Do service discovery.
**
**
** Returns void
**
*******************************************************************************/
void bta_hf_client_do_disc(void)
{
tSDP_UUID uuid_list[2];
UINT16 num_uuid = 1;
UINT16 attr_list[4];
UINT8 num_attr;
BOOLEAN db_inited = FALSE;
/* initiator; get proto list and features */
if (bta_hf_client_cb.scb.role == BTA_HF_CLIENT_INT) {
attr_list[0] = ATTR_ID_SERVICE_CLASS_ID_LIST;
attr_list[1] = ATTR_ID_PROTOCOL_DESC_LIST;
attr_list[2] = ATTR_ID_BT_PROFILE_DESC_LIST;
attr_list[3] = ATTR_ID_SUPPORTED_FEATURES;
num_attr = 4;
uuid_list[0].uu.uuid16 = UUID_SERVCLASS_AG_HANDSFREE;
}
/* acceptor; get features */
else {
attr_list[0] = ATTR_ID_SERVICE_CLASS_ID_LIST;
attr_list[1] = ATTR_ID_BT_PROFILE_DESC_LIST;
attr_list[2] = ATTR_ID_SUPPORTED_FEATURES;
num_attr = 3;
uuid_list[0].uu.uuid16 = UUID_SERVCLASS_AG_HANDSFREE;
}
/* allocate buffer for sdp database */
bta_hf_client_cb.scb.p_disc_db = (tSDP_DISCOVERY_DB *) osi_malloc(BT_DEFAULT_BUFFER_SIZE);
if (bta_hf_client_cb.scb.p_disc_db) {
/* set up service discovery database; attr happens to be attr_list len */
uuid_list[0].len = LEN_UUID_16;
uuid_list[1].len = LEN_UUID_16;
db_inited = SDP_InitDiscoveryDb(bta_hf_client_cb.scb.p_disc_db, BT_DEFAULT_BUFFER_SIZE, num_uuid,
uuid_list, num_attr, attr_list);
}
if (db_inited) {
/*Service discovery not initiated */
db_inited = SDP_ServiceSearchAttributeRequest(bta_hf_client_cb.scb.peer_addr,
bta_hf_client_cb.scb.p_disc_db, bta_hf_client_sdp_cback);
}
if (!db_inited) {
/*free discover db */
bta_hf_client_free_db(NULL);
/* sent failed event */
bta_hf_client_sm_execute(BTA_HF_CLIENT_DISC_FAIL_EVT, NULL);
}
}
static void bta_hf_client_at_parse_start(void)
{
char *buf = bta_hf_client_cb.scb.at_cb.buf;
APPL_TRACE_DEBUG("%s", __FUNCTION__);
#ifdef BTA_HF_CLIENT_AT_DUMP
bta_hf_client_dump_at();
#endif
while(*buf != '\0')
{
int i;
char *tmp = NULL;
for(i = 0; i < bta_hf_client_psraser_cb_count; i++)
{
tmp = bta_hf_client_parser_cb[i](buf);
if (tmp == NULL)
{
APPL_TRACE_ERROR("HFPCient: AT event/reply parsing failed, skipping");
tmp = bta_hf_client_skip_unknown(buf);
break;
}
/* matched or unknown skipped, if unknown failed tmp is NULL so
this is also handled */
if (tmp != buf)
{
buf = tmp;
break;
}
}
/* could not skip unknown (received garbage?)... disconnect */
if (tmp == NULL)
{
APPL_TRACE_ERROR("HFPCient: could not skip unknown AT event, disconnecting");
bta_hf_client_at_reset();
bta_hf_client_sm_execute(BTA_HF_CLIENT_API_CLOSE_EVT, NULL);
return;
}
buf = tmp;
}
}
/*******************************************************************************
**
** Function bta_hf_client_disc_int_res
**
** Description This function handles a discovery result when initiator.
**
**
** Returns void
**
*******************************************************************************/
void bta_hf_client_disc_int_res(tBTA_HF_CLIENT_DATA *p_data)
{
UINT16 event = BTA_HF_CLIENT_DISC_FAIL_EVT;
APPL_TRACE_DEBUG ("bta_hf_client_disc_int_res: Status: %d", p_data->disc_result.status);
/* if found service */
if (p_data->disc_result.status == SDP_SUCCESS ||
p_data->disc_result.status == SDP_DB_FULL)
{
/* get attributes */
if (bta_hf_client_sdp_find_attr())
{
event = BTA_HF_CLIENT_DISC_OK_EVT;
}
}
/* free discovery db */
bta_hf_client_free_db(p_data);
/* send ourselves sdp ok/fail event */
bta_hf_client_sm_execute(event, p_data);
}
