[nrf fromlist] tests: bluetooth: tester: Start stream from connected_cb

- When we are a peripheral we want to be able to start a stream
  from the stream_connected_cb, given that we are in an enabling state
  and the stream is in the sink direction

Signed-off-by: Alexander Svensen <[email protected]>
(cherry picked from commit 6569214eb39f5b4847fa1c21fa6b10f2290f7e8c)

Author: alexsven

tests/bluetooth/tester/src/audio/btp_bap_unicast.c

@@ -693,21 +693,21 @@ static void stream_started_cb(struct bt_bap_stream *stream)
 static void stream_connected_cb(struct bt_bap_stream *stream)
 {
 	struct bt_conn_info conn_info;
+	struct bt_bap_ep_info ep_info;
+	int err;
 
 	LOG_DBG("Connected stream %p", stream);
 
-	(void)bt_conn_get_info(stream->conn, &conn_info);
-	if (conn_info.role == BT_HCI_ROLE_CENTRAL) {
-		struct bt_bap_ep_info ep_info;
-		int err;
+	err = bt_bap_ep_get_info(stream->ep, &ep_info);
+	if (err != 0) {
+		LOG_ERR("Failed to get info: %d", err);
 
-		err = bt_bap_ep_get_info(stream->ep, &ep_info);
-		if (err != 0) {
-			LOG_ERR("Failed to get info: %d", err);
+		return;
+	}
 
-			return;
-		}
+	(void)bt_conn_get_info(stream->conn, &conn_info);
 
+	if (conn_info.role == BT_HCI_ROLE_CENTRAL) {
 		if (ep_info.dir == BT_AUDIO_DIR_SOURCE) {
 			if (ep_info.state == BT_BAP_EP_STATE_ENABLING) {
 				/* Automatically do the receiver start ready operation for source
@@ -727,6 +727,18 @@ static void stream_connected_cb(struct bt_bap_stream *stream)
 							     BT_ASCS_START_OP,
 							     BTP_ASCS_STATUS_SUCCESS);
 		}
+	} else {
+		if (ep_info.dir == BT_AUDIO_DIR_SINK && ep_info.state == BT_BAP_EP_STATE_ENABLING) {
+			/* Automatically do the receiver start ready operation for sink
+			 * ASEs as the server when in the enabling state.
+			 * The CIS may be connected in the QoS Configured state as well, in
+			 * which case we should wait until we enter the enabling state.
+			 */
+			err = bt_bap_stream_start(stream);
+			if (err != 0) {
+				LOG_ERR("Failed to start stream %p", stream);
+			}
+		}
 	}
 
 	btp_send_ascs_cis_connected_ev(stream);