4a-hal-unicens: add Fiberdyne Master Volume

Bug-AGL: SPEC-1758

As preparation before introducing UNICENS 4a plugin:
- Init volume library at first
- Add fiberdyne master volume
- Introduce commands sent by control messages
- Removes outdated controls
- Known issue: turn ALSA volume above "93" to hear some sound

Change-Id: I591c6b109a51c9da602ad08514b67c2ec573e09c
Signed-off-by: Tobias Jahnke <tobias.jahnke@microchip.com>

1 files changed, 32 insertions, 0 deletions

diff --git a/MOST_UNICENS/wrap_unicens.c b/MOST_UNICENS/wrap_unicens.c
index 095a2fe..4b75780 100644
--- a/MOST_UNICENS/wrap_unicens.c
+++ b/MOST_UNICENS/wrap_unicens.c
@@ -334,3 +334,35 @@ OnErrorExit:
         json_object_put(j_query);
     return err;
 }
+
+extern int wrap_ucs_sendmessage(uint16_t src_addr, uint16_t msg_id, uint8_t *data_ptr, uint8_t data_sz) {
+
+    json_object *j_query, *j_response = NULL;
+    int err;
+    int node = (int)src_addr;
+    int msgid = (int)msg_id;
+    size_t data_size = (size_t)data_sz;
+
+    /* skip data attribute if possible, wrap_json_unpack may fail to deal with
+     * an empty Base64 string */
+    if (data_size > 0)
+        wrap_json_pack(&j_query, "{s:i, s:i, s:Y}", "node", node, "msgid", msgid, "data", data_ptr, data_size);
+    else
+        wrap_json_pack(&j_query, "{s:i, s:i}", "node", node, "msgid", msgid);
+
+    err = afb_service_call_sync("UNICENS", "sendmessage", j_query, &j_response);
+
+    if (err) {
+        AFB_ERROR("Failed to call wrap_ucs_sendmessage");
+        goto OnErrorExit;
+    }
+    else {
+        AFB_INFO("Called wrap_ucs_sendmessage, res=%s", json_object_to_json_string(j_response));
+        json_object_put(j_response);
+    }
+
+    j_query = NULL;
+
+OnErrorExit:
+    return err;
+}