bap: Add API for Scan Delegator probe

Since a BAP Broadcast Sink might probe Broadcasters autonomously or with
the help of a Broadcast Assistant, BAP needs to support 2 types of
Broadcaster probing: short-lived and long-lived.

This adds a BAP API for Scan Delegators probe Broadcaster devices
long-lived.

Signed-off-by: Anuj Jain <anuj01.jain@samsung.com>

diff --git a/profiles/audio/bap.c b/profiles/audio/bap.c
index 57b4ac2aa8d70f98f65381e6e0206c3e2afeadda..10710fff2ff408ef49d80e087b629a44c6fa8b4b 100644 (file)
--- a/profiles/audio/bap.c
+++ b/profiles/audio/bap.c
@@ -3175,12 +3175,29 @@ static bool match_bap_adapter(const void *data, const void *match_data)
        return adapter->adapter == match_data;
 }
 
+void bap_scan_delegator_probe(struct btd_device *device)
+{
+       struct bap_data *data;
+
+       /* Create BAP session for the Broadcaster device */
+       data = bap_data_new(device);
+       data->device = device;
+
+       bap_data_add(data);
+
+       /* Add Broadcast Audio Announcement Service UUID
+        * to device and probe service.
+        */
+       btd_device_add_uuid(device, BCAAS_UUID_STR);
+}
+
 static int bap_bcast_probe(struct btd_service *service)
 {
        struct btd_device *device = btd_service_get_device(service);
        struct btd_adapter *adapter = device_get_adapter(device);
        struct btd_gatt_database *database = btd_adapter_get_database(adapter);
        struct bap_bcast_pa_req *req;
+       uint8_t type = BAP_PA_LONG_REQ;
        struct bap_data *data;
 
        if (!btd_adapter_has_exp_feature(adapter, EXP_FEAT_ISO_SOCKET)) {
@@ -3188,10 +3205,27 @@ static int bap_bcast_probe(struct btd_service *service)
                return -ENOTSUP;
        }
 
-       data = bap_data_new(device);
+       data = queue_find(sessions, match_device, device);
+       if (data && data->service) {
+               error("Profile probed twice for the same device!");
+               return -EINVAL;
+       }
+
+       if (!data) {
+               data = bap_data_new(device);
+               data->device = device;
+               bap_data_add(data);
+
+               /* The Broadcaster was scanned autonomously,
+                * so it should be probed short-lived.
+                */
+               type = BAP_PA_SHORT_REQ;
+       }
+
        data->service = service;
+       btd_service_set_user_data(service, data);
+
        data->adapter = queue_find(adapters, match_bap_adapter, adapter);
-       data->device = device;
        data->bap = bt_bap_new(btd_gatt_database_get_db(database),
                        btd_gatt_database_get_db(database));
        if (!data->bap) {
@@ -3206,8 +3240,6 @@ static int bap_bcast_probe(struct btd_service *service)
                return -EINVAL;
        }
 
-       bap_data_add(data);
-
        data->ready_id = bt_bap_ready_register(data->bap, bap_ready, service,
                                                                NULL);
        data->state_id = bt_bap_state_register(data->bap, bap_state_bcast_sink,
@@ -3224,11 +3256,10 @@ static int bap_bcast_probe(struct btd_service *service)
                                                        pa_idle_timer,
                                                        data->adapter);
 
-       /* Enqueue this device advertisement so that we can do short-lived
-        */
+       /* Enqueue this device advertisement so that we can create PA sync. */
        DBG("enqueue service: %p", service);
        req = new0(struct bap_bcast_pa_req, 1);
-       req->type = BAP_PA_SHORT_REQ;
+       req->type = type;
        req->in_progress = FALSE;
        req->data.service = service;
        queue_push_tail(data->adapter->bcast_pa_requests, req);

diff --git a/profiles/audio/bap.h b/profiles/audio/bap.h
index 66f8db88713a3e162d23b92ffe9325df8999e28a..cfe63331186df34a57f12c0bc4191d2092d5a964 100644 (file)
--- a/profiles/audio/bap.h
+++ b/profiles/audio/bap.h
@@ -8,3 +8,4 @@
  */
 
 struct bt_bap *bap_get_session(struct btd_device *device);
+void bap_scan_delegator_probe(struct btd_device *device);