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a2dp_source: use sep_discovery_cid instead of a2dp_source_cid

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This commit is contained in:
Matthias Ringwald 2021-03-15 15:53:19 +01:00
parent 16d361c46f
commit b1041d0e98
1 changed files with 41 additions and 40 deletions
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81
src/classic/a2dp_source.c
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@ -78,9 +78,8 @@ static const char * default_a2dp_source_service_provider_name = "BTstack A2DP So
static btstack_timer_source_t a2dp_source_set_config_timer;
static btstack_packet_handler_t a2dp_source_packet_handler_user;
static uint16_t a2dp_source_cid;
// discover remote seps
static uint16_t sep_discovery_cid;
static uint16_t num_remote_seps;
static avdtp_sep_t remote_seps[AVDTP_MAX_SEP_NUM];
@ -198,17 +197,11 @@ static void a2dp_signaling_emit_reconfigured(uint16_t cid, uint8_t local_seid, u
(*a2dp_source_packet_handler_user)(HCI_EVENT_PACKET, 0, event, sizeof(event));
}
static void a2dp_source_discover_stream_endpoints(uint16_t avdtp_cid){
a2dp_source_cid = avdtp_cid;
avdtp_source_discover_stream_endpoints(avdtp_cid);
}
static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer){
uint16_t avdtp_cid = (uint16_t)(uintptr_t) btstack_run_loop_get_timer_context(timer);
avdtp_connection_t * connection = avdtp_get_connection_for_avdtp_cid(avdtp_cid);
btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL);
if (connection == NULL) {
log_info("a2dp_discover_seps_with_next_waiting_connection");
a2dp_discover_seps_with_next_waiting_connection();
@ -216,7 +209,7 @@ static void a2dp_source_set_config_timer_handler(btstack_timer_source_t * timer)
}
if (connection->a2dp_source_stream_endpoint_configured) return;
a2dp_source_discover_stream_endpoints(avdtp_cid);
avdtp_source_discover_stream_endpoints(avdtp_cid);
}
static void a2dp_source_set_config_timer_start(uint16_t avdtp_cid){
@ -234,17 +227,20 @@ static void a2dp_source_set_config_timer_stop(void){
btstack_run_loop_set_timer_context(&a2dp_source_set_config_timer, NULL);
}
// Discover seps, both incoming and outgoing
static void a2dp_start_discovering_seps(avdtp_connection_t * connection){
connection->a2dp_source_state = A2DP_DISCOVER_SEPS;
connection->a2dp_source_discover_seps = false;
sc.active_remote_sep_index = 0;
num_remote_seps = 0;
memset(remote_seps, 0, sizeof(avdtp_sep_t) * AVDTP_MAX_SEP_NUM);
connection->a2dp_source_discover_seps = false;
sep_discovery_cid = connection->avdtp_cid;
// if we initiated the connection, start config right away, else wait a bit to give remote a chance to do it first
if (connection->a2dp_source_outgoing_active && (a2dp_source_cid == connection->avdtp_cid)){
if (connection->a2dp_source_outgoing_active){
log_info("discover seps");
a2dp_source_discover_stream_endpoints(connection->avdtp_cid);
avdtp_source_discover_stream_endpoints(connection->avdtp_cid);
} else {
log_info("wait a bit, then discover seps");
a2dp_source_set_config_timer_start(connection->avdtp_cid);
@ -252,6 +248,7 @@ static void a2dp_start_discovering_seps(avdtp_connection_t * connection){
}
static void a2dp_discover_seps_with_next_waiting_connection(void){
btstack_assert(sep_discovery_cid == 0);
btstack_linked_list_iterator_t it;
btstack_linked_list_iterator_init(&it, avdtp_get_connections());
while (btstack_linked_list_iterator_has_next(&it)){
@ -261,24 +258,42 @@ static void a2dp_discover_seps_with_next_waiting_connection(void){
}
}
static void a2dp_source_ready_for_sep_discovery(avdtp_connection_t * connection){
// start discover seps now if:
// - outgoing active: signaling for outgoing connection
// - outgoing not active: incoming connection and no sep discover ongoing
// sep discovery active?
if (sep_discovery_cid == 0){
a2dp_start_discovering_seps(connection);
} else {
// post-pone sep discovery
connection->a2dp_source_discover_seps = true;
}
}
static void a2dp_handle_received_configuration(const uint8_t *packet, uint8_t local_seid) {
uint16_t cid = avdtp_subevent_signaling_media_codec_sbc_configuration_get_avdtp_cid(packet);
avdtp_connection_t * avdtp_connection = avdtp_get_connection_for_avdtp_cid(cid);
btstack_assert(avdtp_connection != NULL);
if ((a2dp_source_cid == cid) && (avdtp_connection->a2dp_source_state == A2DP_W4_SET_CONFIGURATION)){
avdtp_connection->a2dp_source_stream_endpoint_configured = true;
// stop timer
if (sep_discovery_cid == cid) {
a2dp_source_set_config_timer_stop();
sep_discovery_cid = 0;
}
// outgoing active?
if (avdtp_connection->a2dp_source_state == A2DP_W4_SET_CONFIGURATION){
// outgoing: discovery and config of remote sink sep successful, trigger stream open
avdtp_connection->a2dp_source_state = A2DP_W2_OPEN_STREAM_WITH_SEID;
} else {
// incoming: accept cid, lookup local stream endpoint and wait for stream open
a2dp_source_cid = cid;
sc.local_stream_endpoint = avdtp_get_stream_endpoint_for_seid(local_seid);
btstack_assert(sc.local_stream_endpoint != NULL);
avdtp_connection->a2dp_source_state = A2DP_W4_OPEN_STREAM_WITH_SEID;
}
// config set: stop timer
a2dp_source_set_config_timer_stop();
avdtp_connection->a2dp_source_stream_endpoint_configured = true;
}
static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){
@ -305,7 +320,7 @@ static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t ch
status = avdtp_subevent_signaling_connection_established_get_status(packet);
if (status != ERROR_CODE_SUCCESS){
// notify about connection error only if we're initiator
if (connection->a2dp_source_outgoing_active && (a2dp_source_cid == cid)){
if (connection->a2dp_source_outgoing_active){
log_info("A2DP source signaling connection failed status 0x%02x", status);
connection->a2dp_source_outgoing_active = false;
a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED);
@ -313,24 +328,13 @@ static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t ch
break;
}
log_info("A2DP source signaling connection established avdtp_cid 0x%02x", cid);
connection->a2dp_source_state = A2DP_CONNECTED;
// notify app
a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_ESTABLISHED);
// we already have a valid setup
if (connection->a2dp_source_stream_endpoint_configured) return;
// start discover seps now if:
// - outgoing active: signaling for outgoing connection
// - outgoing not active: incoming connection and no sep discover ongoing
log_info("outgoing_active %d, current avdtp cid 0x%02x, a2dp_source_state %d", connection->a2dp_source_outgoing_active, cid, connection->a2dp_source_state);
if ((connection->a2dp_source_outgoing_active && (a2dp_source_cid == cid)) || (!connection->a2dp_source_outgoing_active && (connection->a2dp_source_state == A2DP_IDLE))){
a2dp_start_discovering_seps(connection);
} else {
// post-pone sep discovery
connection->a2dp_source_discover_seps = true;
}
// continue
a2dp_source_ready_for_sep_discovery(connection);
break;
case AVDTP_SUBEVENT_SIGNALING_SEP_FOUND:
@ -675,12 +679,13 @@ static void a2dp_source_packet_handler_internal(uint8_t packet_type, uint16_t ch
btstack_assert(connection != NULL);
// connect/release are passed on to app
if (a2dp_source_cid == cid){
if (sep_discovery_cid == cid){
a2dp_source_set_config_timer_stop();
connection->a2dp_source_stream_endpoint_configured = false;
sc.local_stream_endpoint = NULL;
connection->a2dp_source_state = A2DP_IDLE;
a2dp_source_cid = 0;
sep_discovery_cid = 0;
}
a2dp_replace_subevent_id_and_emit_cmd(a2dp_source_packet_handler_user, packet, size, A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED);
break;
@ -704,8 +709,6 @@ void a2dp_source_init(void){
void a2dp_source_deinit(void){
avdtp_source_deinit();
a2dp_source_cid = 0;
num_remote_seps = 0;
}
@ -751,7 +754,6 @@ uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid)
// setup state
connection->a2dp_source_outgoing_active = true;
connection->a2dp_source_state = A2DP_W4_CONNECTED;
a2dp_source_cid = outgoing_cid;
*avdtp_cid = outgoing_cid;
} else {
@ -765,9 +767,8 @@ uint8_t a2dp_source_establish_stream(bd_addr_t remote_addr, uint16_t *avdtp_cid)
case A2DP_CONNECTED:
// restart process e.g. if there no suitable stream endpoints or they had been in use
connection->a2dp_source_outgoing_active = true;
connection->a2dp_source_state = A2DP_DISCOVER_SEPS;
*avdtp_cid = connection->avdtp_cid;
a2dp_start_discovering_seps(connection);
a2dp_source_ready_for_sep_discovery(connection);
break;
default:
return ERROR_CODE_COMMAND_DISALLOWED;