static void hfp_run_for_context(hfp_connection_t *context){
if (!context) return;
if (!rfcomm_can_send_packet_now(context->rfcomm_cid)) return;
if (context->command == HFP_CMD_UNKNOWN){
context->ok_pending = 0;
context->send_error = 0;
context->command = HFP_CMD_NONE;
hfp_ag_error(context->rfcomm_cid);
return;
}
if (context->ok_pending){
context->ok_pending = 0;
context->command = HFP_CMD_NONE;
hfp_ag_ok(context->rfcomm_cid);
return;
}
if (context->send_error){
context->send_error = 0;
context->command = HFP_CMD_NONE;
hfp_ag_error(context->rfcomm_cid);
return;
}
int done = hfp_ag_run_for_context_service_level_connection(context);
if (!done){
done = hfp_ag_run_for_context_service_level_connection_queries(context);
}
if (!done){
done = incoming_call_state_machine(context);
}
if (!done){
done = hfp_ag_run_for_audio_connection(context);
}
if (context->command == HFP_CMD_NONE && !done){
log_info("context->command == HFP_CMD_NONE");
switch(context->state){
case HFP_W2_DISCONNECT_RFCOMM:
context->state = HFP_W4_RFCOMM_DISCONNECTED;
rfcomm_disconnect_internal(context->rfcomm_cid);
break;
default:
break;
}
}
if (done){
context->command = HFP_CMD_NONE;
}
}
static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * context){
// if (context->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0;
int done = codecs_exchange_state_machine(context);
if (done) return done;
// printf(" -> State machine: SLC Queries\n");
switch(context->command){
case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME:
hfp_ag_report_network_operator_name_cmd(context->rfcomm_cid, context->network_operator);
return 1;
case HFP_CMD_QUERY_OPERATOR_SELECTION_NAME_FORMAT:
if (context->network_operator.format != 0){
hfp_ag_error(context->rfcomm_cid);
} else {
hfp_ag_ok(context->rfcomm_cid);
}
return 1;
case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE:
hfp_ag_ok(context->rfcomm_cid);
return 1;
case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR:
if (context->extended_audio_gateway_error){
context->extended_audio_gateway_error = 0;
hfp_ag_report_extended_audio_gateway_error(context->rfcomm_cid, context->extended_audio_gateway_error);
return 1;
}
case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE:
printf("TODO\n");
break;
default:
break;
}
return 0;
}
void hfp_run_for_context(hfp_connection_t *context){
if (!context) return;
if (!rfcomm_can_send_packet_now(context->rfcomm_cid)) return;
// printf("AG hfp_run_for_context 1 state %d, command %d\n", context->state, context->command);
if (context->send_ok){
hfp_ag_ok(context->rfcomm_cid);
context->send_ok = 0;
return;
}
if (context->send_error){
hfp_ag_error(context->rfcomm_cid);
context->send_error = 0;
return;
}
int done;
if (!rfcomm_can_send_packet_now(context->rfcomm_cid)) return;
hfp_ag_run_for_context_service_level_connection(context);
if (!rfcomm_can_send_packet_now(context->rfcomm_cid)) return;
done = hfp_ag_run_for_context_service_level_connection_queries(context);
if (!rfcomm_can_send_packet_now(context->rfcomm_cid) || done) return;
done = hfp_ag_run_for_context_codecs_connection(context);
if (context->command == HFP_CMD_NONE){
switch(context->state){
case HFP_W2_DISCONNECT_RFCOMM:
// printf("rfcomm_disconnect_internal cid 0x%02x\n", context->rfcomm_cid);
context->state = HFP_W4_RFCOMM_DISCONNECTED;
rfcomm_disconnect_internal(context->rfcomm_cid);
break;
default:
break;
}
}
context->command = HFP_CMD_NONE;
}
static int hfp_ag_run_for_context_codecs_connection(hfp_connection_t * context){
if (context->state <= HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED ||
context->state > HFP_CODECS_CONNECTION_ESTABLISHED) return 0;
int done = 0;
printf(" AG run for context_codecs_connection: ");
switch (context->state){
case HFP_SLE_W2_EXCHANGE_COMMON_CODEC:
if (context->ag_trigger_codec_connection_setup){ // received BCS
printf(" send BCS \n");
context->ag_trigger_codec_connection_setup = 0;
context->state = HFP_SLE_W4_EXCHANGE_COMMON_CODEC;
context->suggested_codec = hfp_ag_suggest_codec(context);
hfp_ag_cmd_suggest_codec(context->rfcomm_cid, context->suggested_codec);
done = 1;
break;
}
break;
case HFP_SLE_W4_EXCHANGE_COMMON_CODEC:
switch(context->command){
case HFP_CMD_AVAILABLE_CODECS:
if (context->notify_ag_on_new_codecs){ // received BAC
printf(" received BAC\n");
context->notify_ag_on_new_codecs = 0;
if (context->suggested_codec != hfp_ag_suggest_codec(context)){
context->suggested_codec = hfp_ag_suggest_codec(context);
context->state = HFP_SLE_W4_EXCHANGE_COMMON_CODEC;
}
hfp_ag_ok(context->rfcomm_cid);
done = 1;
break;
}
break;
case HFP_CMD_HF_CONFIRMED_CODEC:
printf(" received AT+BCS\n");
if (context->codec_confirmed != context->suggested_codec){
context->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED;
hfp_ag_error(context->rfcomm_cid);
done = 1;
break;
}
context->negotiated_codec = context->codec_confirmed;
context->state = HFP_CODECS_CONNECTION_ESTABLISHED;
hfp_emit_event(hfp_callback, HFP_SUBEVENT_CODECS_CONNECTION_COMPLETE, 0);
hfp_ag_ok(context->rfcomm_cid);
done = 1;
break;
default:
break;
}
break;
case HFP_CODECS_CONNECTION_ESTABLISHED:
switch(context->command){
case HFP_CMD_AVAILABLE_CODECS:
if (context->notify_ag_on_new_codecs){ // received BAC
context->notify_ag_on_new_codecs = 0;
if (context->suggested_codec != hfp_ag_suggest_codec(context)){
context->suggested_codec = hfp_ag_suggest_codec(context);
context->state = HFP_SLE_W4_EXCHANGE_COMMON_CODEC;
}
hfp_ag_ok(context->rfcomm_cid);
done = 1;
break;
}
break;
case HFP_CMD_AG_SUGGESTED_CODEC:
if (context->ag_trigger_codec_connection_setup){
context->ag_trigger_codec_connection_setup = 0;
if (context->negotiated_codec != hfp_ag_suggest_codec(context)){
context->state = HFP_SLE_W4_EXCHANGE_COMMON_CODEC;
context->suggested_codec = hfp_ag_suggest_codec(context);
hfp_ag_cmd_suggest_codec(context->rfcomm_cid, context->suggested_codec);
done = 1;
break;
}
}
break;
default:
break;
}
default:
break;
}
return done;
}
static int hfp_ag_run_for_context_service_level_connection_queries(hfp_connection_t * context){
if (context->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) return 0;
int done = 0;
printf(" SLC queries: ");
switch(context->command){
case HFP_CMD_AVAILABLE_CODECS:
context->suggested_codec = hfp_ag_suggest_codec(context);
printf("received BAC == new HF codecs, suggested codec %d\n", context->suggested_codec);
hfp_ag_ok(context->rfcomm_cid);
done = 1;
break;
case HFP_CMD_QUERY_OPERATOR_SELECTION:
if (context->operator_name_format == 1){
if (context->network_operator.format != 0){
hfp_ag_error(context->rfcomm_cid);
done = 1;
break;
}
hfp_ag_ok(context->rfcomm_cid);
done = 1;
context->operator_name_format = 0;
break;
}
if (context->operator_name == 1){
hfp_ag_report_network_operator_name_cmd(context->rfcomm_cid, context->network_operator);
context->operator_name = 0;
done = 1;
break;
}
break;
case HFP_CMD_ENABLE_INDIVIDUAL_AG_INDICATOR_STATUS_UPDATE:{
int i;
for (i = 0; i < context->ag_indicators_nr; i++){
if (context->ag_indicators[i].enabled == 0) continue;
if (context->ag_indicators[i].status_changed == 0) continue;
hfp_ag_transfer_ag_indicators_status_cmd(context->rfcomm_cid, context->ag_indicators[i]);
done = 1;
context->ag_indicators[i].status_changed = 0;
return done;
}
break;
}
case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP:
if (context->hf_trigger_codec_connection_setup){ // received BCC
printf(" received BCC \n");
context->hf_trigger_codec_connection_setup = 0;
context->ag_trigger_codec_connection_setup = 1;
context->state = HFP_SLE_W2_EXCHANGE_COMMON_CODEC;
hfp_ag_ok(context->rfcomm_cid);
done = 1;
return done;
}
if (context->ag_trigger_codec_connection_setup){ // received BCS
printf(" send BCS \n");
context->ag_trigger_codec_connection_setup = 0;
context->state = HFP_SLE_W4_EXCHANGE_COMMON_CODEC;
context->suggested_codec = hfp_ag_suggest_codec(context);
hfp_ag_cmd_suggest_codec(context->rfcomm_cid, context->suggested_codec);
done = 1;
return done;
}
break;
case HFP_CMD_ENABLE_EXTENDED_AUDIO_GATEWAY_ERROR:
if (context->extended_audio_gateway_error){
hfp_ag_report_extended_audio_gateway_error(context->rfcomm_cid, context->extended_audio_gateway_error);
context->extended_audio_gateway_error = 0;
done = 1;
break;
}
case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE:
printf("TODO\n");
break;
default:
break;
}
return done;
}
void hfp_run_for_context(hfp_connection_t *context) {
// printf(" hfp_run_for_context \n");
if (!context) return;
if (!rfcomm_can_send_packet_now(context->rfcomm_cid)) return;
//printf(" hfp_run_for_context 1 state %d, command %d\n", context->state, context->command);
if (context->state == HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) {
if (context->send_ok) {
hfp_ag_ok(context->rfcomm_cid);
context->send_ok = 0;
return;
}
if (context->send_error) {
hfp_ag_error(context->rfcomm_cid);
context->send_error = 0;
return;
}
if (context->enable_status_update_for_ag_indicators) {
int i;
for (i = 0; i < context->ag_indicators_nr; i++) {
if (context->ag_indicators[i].enabled == 0) continue;
if (context->ag_indicators[i].status_changed == 0) continue;
hfp_ag_transfer_ag_indicators_status_cmd(context->rfcomm_cid, context->ag_indicators[i]);
context->ag_indicators[i].status_changed = 0;
return;
}
}
if (context->enable_extended_audio_gateway_error_report) {
if (context->extended_audio_gateway_error) {
hfp_ag_report_extended_audio_gateway_error(context->rfcomm_cid, context->extended_audio_gateway_error);
context->extended_audio_gateway_error = 0;
return;
}
}
}
if (context->state == HFP_AUDIO_CONNECTION_ESTABLISHED) {
// TODO
}
switch(context->command) {
// START codec setup
case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP:
if (!hfp_ag_choose_codec(context)) {
hfp_ag_error(context->rfcomm_cid);
break;
}
switch (context->state) {
case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED:
// hfp_ag_ok(context->rfcomm_cid);
context->negotiated_codec = hfp_ag_choose_codec(context);
hfp_ag_cmd_confirm_codec(context->rfcomm_cid, context->negotiated_codec);
context->state = HFP_SLE_W4_EXCHANGE_COMMON_CODEC;
break;
default:
hfp_ag_error(context->rfcomm_cid);
break;
}
break;
case HFP_CMD_CONFIRM_COMMON_CODEC:
hfp_ag_ok(context->rfcomm_cid);
context->state = HFP_CODECS_CONNECTION_ESTABLISHED;
break;
// END codec setup
case HFP_CMD_SUPPORTED_FEATURES:
switch(context->state) {
case HFP_W4_EXCHANGE_SUPPORTED_FEATURES:
hfp_ag_exchange_supported_features_cmd(context->rfcomm_cid);
if (has_codec_negotiation_feature(context)) {
context->state = HFP_W4_NOTIFY_ON_CODECS;
break;
}
context->state = HFP_W4_RETRIEVE_INDICATORS;
break;
default:
break;
}
break;
case HFP_CMD_AVAILABLE_CODECS:
switch(context->state) {
case HFP_W4_NOTIFY_ON_CODECS:
hfp_ag_retrieve_codec_cmd(context->rfcomm_cid);
context->state = HFP_W4_RETRIEVE_INDICATORS;
break;
default:
break;
}
break;
case HFP_CMD_INDICATOR:
switch(context->state) {
case HFP_W4_RETRIEVE_INDICATORS:
if (context->retrieve_ag_indicators == 0) break;
hfp_ag_retrieve_indicators_cmd(context->rfcomm_cid, context);
context->state = HFP_W4_RETRIEVE_INDICATORS_STATUS;
break;
case HFP_W4_RETRIEVE_INDICATORS_STATUS:
if (context->retrieve_ag_indicators_status == 0) break;
hfp_ag_retrieve_indicators_status_cmd(context->rfcomm_cid);
context->state = HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE;
break;
default:
break;
}
break;
case HFP_CMD_ENABLE_INDICATOR_STATUS_UPDATE:
switch(context->state) {
case HFP_W4_ENABLE_INDICATORS_STATUS_UPDATE:
hfp_ag_toggle_indicator_status_update_cmd(context->rfcomm_cid, 1);
if (has_call_waiting_and_3way_calling_feature(context)) {
context->state = HFP_W4_RETRIEVE_CAN_HOLD_CALL;
break;
}
if (has_hf_indicators_feature(context)) {
context->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS;
break;
}
context->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED;
hfp_emit_event(hfp_callback, HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED, 0);
break;
case HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED:
// TODO
break;
default:
break;
}
break;
case HFP_CMD_SUPPORT_CALL_HOLD_AND_MULTIPARTY_SERVICES:
switch(context->state) {
case HFP_W4_RETRIEVE_CAN_HOLD_CALL:
hfp_ag_retrieve_can_hold_call_cmd(context->rfcomm_cid);
if (has_hf_indicators_feature(context)) {
context->state = HFP_W4_LIST_GENERIC_STATUS_INDICATORS;
break;
}
context->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED;
hfp_emit_event(hfp_callback, HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED, 0);
break;
default:
break;
}
break;
case HFP_CMD_GENERIC_STATUS_INDICATOR:
switch(context->state) {
case HFP_W4_LIST_GENERIC_STATUS_INDICATORS:
if (context->list_generic_status_indicators == 0) break;
hfp_ag_list_supported_generic_status_indicators_cmd(context->rfcomm_cid);
context->state = HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS;
context->list_generic_status_indicators = 0;
break;
case HFP_W4_RETRIEVE_GENERIC_STATUS_INDICATORS:
if (context->retrieve_generic_status_indicators == 0) break;
hfp_ag_retrieve_supported_generic_status_indicators_cmd(context->rfcomm_cid);
context->state = HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS;
context->retrieve_generic_status_indicators = 0;
break;
case HFP_W4_RETRIEVE_INITITAL_STATE_GENERIC_STATUS_INDICATORS:
if (context->retrieve_generic_status_indicators_state == 0) break;
hfp_ag_retrieve_initital_supported_generic_status_indicators_cmd(context->rfcomm_cid);
context->state = HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED;
context->retrieve_generic_status_indicators_state = 0;
hfp_emit_event(hfp_callback, HFP_SUBEVENT_SERVICE_LEVEL_CONNECTION_ESTABLISHED, 0);
break;
default:
break;
}
break;
case HFP_CMD_QUERY_OPERATOR_SELECTION:
if (context->state != HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED) break;
if (context->operator_name_format == 1) {
if (context->network_operator.format != 0) {
hfp_ag_error(context->rfcomm_cid);
break;
}
hfp_ag_ok(context->rfcomm_cid);
context->operator_name_format = 0;
break;
}
if (context->operator_name == 1) {
hfp_ag_report_network_operator_name_cmd(context->rfcomm_cid, context->network_operator);
context->operator_name = 0;
break;
}
break;
case HFP_CMD_NONE:
switch(context->state) {
case HFP_W2_DISCONNECT_RFCOMM:
// printf("rfcomm_disconnect_internal cid 0x%02x\n", context->rfcomm_cid);
context->state = HFP_W4_RFCOMM_DISCONNECTED;
rfcomm_disconnect_internal(context->rfcomm_cid);
break;
default:
break;
}
break;
default:
break;
}
// done
context->command = HFP_CMD_NONE;
}
static int codecs_exchange_state_machine(hfp_connection_t * context){
/* events ( == commands):
HFP_CMD_AVAILABLE_CODECS == received AT+BAC with list of codecs
HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP:
hf_trigger_codec_connection_setup == received BCC
ag_trigger_codec_connection_setup == received from AG to send BCS
HFP_CMD_HF_CONFIRMED_CODEC == received AT+BCS
*/
switch (context->codecs_state){
case HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE:
context->command = HFP_CMD_AG_SEND_COMMON_CODEC;
break;
case HFP_CODECS_AG_RESEND_COMMON_CODEC:
context->command = HFP_CMD_AG_SEND_COMMON_CODEC;
break;
default:
break;
}
// printf(" -> State machine: CC\n");
switch (context->command){
case HFP_CMD_AVAILABLE_CODECS:
//printf("HFP_CODECS_RECEIVED_LIST \n");
if (context->state < HFP_SERVICE_LEVEL_CONNECTION_ESTABLISHED){
context->codecs_state = HFP_CODECS_RECEIVED_LIST;
hfp_ag_ok(context->rfcomm_cid);
return 1;
}
switch (context->codecs_state){
case HFP_CODECS_AG_SENT_COMMON_CODEC:
case HFP_CODECS_EXCHANGED:
context->codecs_state = HFP_CODECS_AG_RESEND_COMMON_CODEC;
break;
default:
break;
}
hfp_ag_ok(context->rfcomm_cid);
return 1;
case HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP:
//printf(" HFP_CMD_TRIGGER_CODEC_CONNECTION_SETUP \n");
context->codecs_state = HFP_CODECS_RECEIVED_TRIGGER_CODEC_EXCHANGE;
hfp_ag_ok(context->rfcomm_cid);
return 1;
case HFP_CMD_AG_SEND_COMMON_CODEC:
//printf(" HFP_CMD_AG_SEND_COMMON_CODEC \n");
context->codecs_state = HFP_CODECS_AG_SENT_COMMON_CODEC;
context->suggested_codec = hfp_ag_suggest_codec(context);
hfp_ag_cmd_suggest_codec(context->rfcomm_cid, context->suggested_codec);
return 1;
case HFP_CMD_HF_CONFIRMED_CODEC:
//printf("HFP_CMD_HF_CONFIRMED_CODEC \n");
if (context->codec_confirmed != context->suggested_codec){
context->codecs_state = HFP_CODECS_ERROR;
hfp_ag_error(context->rfcomm_cid);
return 1;
}
context->negotiated_codec = context->codec_confirmed;
context->codecs_state = HFP_CODECS_EXCHANGED;
hfp_emit_event(hfp_callback, HFP_SUBEVENT_CODECS_CONNECTION_COMPLETE, 0);
hfp_ag_ok(context->rfcomm_cid);
return 1;
default:
break;
}
return 0;
}