unicens-controller: add DOA feature

Introduce a new API to retrieve the current direction
of audio (DOA) recognized by the microphone.

Bug-AGL: SPEC-2899

Signed-off-by: Tobias Jahnke <tobias.jahnke@microchip.com>
Change-Id: I387efaeaf0cffd06b3d88efbeeaf2ef7eb23c780

1 files changed, 50 insertions, 0 deletions

diff --git a/binding/wrap-unicens/wrap-unicens.c b/binding/wrap-unicens/wrap-unicens.c
index e5d4570..84b94cd 100644
--- a/binding/wrap-unicens/wrap-unicens.c
+++ b/binding/wrap-unicens/wrap-unicens.c
@@ -66,6 +66,56 @@ extern int wrap_ucs_subscribe_sync(void) {
     return 0;
 }
 
+/*
+ * Subscribes to unicens2-binding RX message events.
+ * \return    Returns 0 if successful, otherwise != 0".
+ */
+extern int wrap_ucs_subscriberx_sync(void) {
+    int err;
+
+    json_object *j_response, *j_query = NULL;
+    char *error, *info;
+
+    /* Build an empty JSON object */
+    if((err = wrap_json_pack(&j_query, "{}"))) {
+        AFB_API_ERROR(api_handle_, "Failed to create subscribe RX json object");
+        return err;
+    }
+
+    if((err = afb_api_call_sync(api_handle_, "UNICENS", "subscriberx", j_query, &j_response, &error, &info))) {
+        AFB_API_ERROR(api_handle_, "Fail subscribing to UNICENS RX events");
+        return err;
+    }
+    else {
+        AFB_API_NOTICE(api_handle_, "Subscribed to UNICENS RX events, res=%s", json_object_to_json_string(j_response));
+        json_object_put(j_response);
+    }
+
+    return 0;
+}
+
+extern int wrap_ucs_interpretrx_event(const char *event, struct json_object *object, wrap_ucs_rx_message_cb_t callback) {
+    int node_id = 0;
+    int msg_id = 0;
+    uint8_t *data_ptr = NULL;
+    size_t data_sz = 0;
+
+    if (strcmp(event, "UNICENS/rx-message") != 0) {
+        return -1; // unhandled event
+    }
+
+    if (wrap_json_unpack(object, "{s:i, s:i, s?Y}", "node", &node_id, "msgid", &msg_id, "data", &data_ptr, &data_sz) != 0) {
+        AFB_API_NOTICE(api_handle_, "Parsing rx-message failed.");
+        return -2;
+    }
+
+    if (callback != NULL) {
+        callback((uint16_t)node_id, (uint16_t)msg_id, (uint16_t)data_sz, data_ptr);
+    }
+
+    return 0;
+}
+
 extern int wrap_ucs_interpret_event(const char *event, struct json_object *object, wrap_ucs_availability_cb_t callback) {
     int node_id = 0;
     int available = false;