unicens-controller: insert initial code of service

Bug-AGL: SPEC-2738

- adds service widget to control microphone mode,
  amplifier and slimamp master volume

Signed-off-by: Tobias Jahnke <tobias.jahnke@microchip.com>
Change-Id: I2463b0351c740c738e35185997d926a602bb2489
Signed-off-by: Tobias Jahnke <tobias.jahnke@microchip.com>

1 files changed, 81 insertions, 0 deletions

diff --git a/binding/binding.c b/binding/binding.c
new file mode 100644
index 0000000..cebc54a
--- /dev/null
+++ b/binding/binding.c
@@ -0,0 +1,81 @@
+/*
+ *  Copyright 2019 Microchip Technology Inc. and its subsidiaries
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+#define _GNU_SOURCE
+#ifndef AFB_BINDING_VERSION
+#  define AFB_BINDING_VERSION 3
+#endif
+
+#include <stdio.h>
+#include <string.h>
+#include <wrap-json.h>
+#include <afb/afb-binding.h>
+#include "wrap-unicens.h"
+#include "slimamp.h"
+#include "amplifier.h"
+#include "microphone.h"
+
+/* callback at load of the binding */
+static int preinit(afb_api_t api) {
+    AFB_API_NOTICE(afbBindingRoot, "UNICENS-CONTROLLER: PREINIT");
+    return 0;
+}
+
+/* callback for starting the service */
+static int init(afb_api_t api) {
+    AFB_API_NOTICE(afbBindingRoot, "UNICENS-CONTROLLER: INIT");
+    wrap_ucs_init(api);
+    wrap_ucs_subscribe_sync();
+    return 0;
+}
+
+static void on_availability_cb(uint16_t node, bool available) {
+    amplifier_availablility_changed(node, available);
+    slimamp_availablility_changed(node, available);
+    microphone_availablility_changed(node, available);
+}
+
+/* callback for handling events */
+static void onevent(afb_api_t api, const char *event, struct json_object *object) {
+    AFB_API_NOTICE(afbBindingRoot, "UNICENS-CONTROLLER: Event: %s object: %s", event, json_object_get_string(object));
+    wrap_ucs_interpret_event(event, object, &on_availability_cb);
+}
+
+static void ping(afb_req_t request) {
+    AFB_API_NOTICE(afbBindingRoot, "UNICENS-CONTROLLER: Ping successful");
+    afb_req_success(request, 0, NULL);
+}
+
+static const afb_verb_t verbs[] = {
+    {.verb = "ping", .session = AFB_SESSION_NONE, .callback = ping, .auth = NULL},
+    {.verb = "slimamp_master_volume_set", .session = AFB_SESSION_NONE, .callback = slimamp_master_vol_set_api, .auth = NULL},
+    {.verb = "amplifier_master_volume_set", .session = AFB_SESSION_NONE, .callback = amplifier_master_vol_set_api, .auth = NULL},
+    {.verb = "microphone_mode_set", .session = AFB_SESSION_NONE, .callback = microphone_mode_set_api, .auth = NULL},
+    {NULL}
+};
+
+const afb_binding_t afbBindingExport = {
+    .api = "unicens-controller",
+    .specification = NULL,
+    .verbs = verbs,
+    .preinit = preinit,
+    .init = init,
+    .onevent = onevent,
+    .userdata = NULL,
+    .provide_class = NULL,
+    .require_class = NULL,
+    .require_api = NULL,
+    .noconcurrency = 0
+};