Add API which can get information about the car state

getCarInfo() can get the car state informations as follows:
 - parking brake state        : true/false
 - accelerator pedal position : 0-127.5
 - car state                  : "stop"/"run"

The details are described in doc/ApplicationGuide.md
in project apps/agl-service-windowmanager-2017.

Change-Id: Iac1052c172414b652aa94d94b386e22dff94cfdb
Signed-off-by: Yuta Doi <yuta-d@witz-inc.co.jp>

2 files changed, 94 insertions, 1 deletions

diff --git a/src/libwindowmanager.cpp b/src/libwindowmanager.cpp
index c62550b..fb833d4 100644
--- a/src/libwindowmanager.cpp
+++ b/src/libwindowmanager.cpp
@@ -80,6 +80,7 @@ class LibWindowmanager::Impl {
 
     int getDisplayInfo(json_object *object);
     int getAreaInfo(json_object *in_obj, json_object *out_obj);
+    int getCarInfo(json_object *in_obj, json_object *out_obj);
 
     void set_event_handler(enum EventType et, handler_fun func);
 
@@ -557,6 +558,84 @@ int LibWindowmanager::Impl::getAreaInfo(json_object *in_obj, json_object *out_ob
     return rc;
 }
 
+int LibWindowmanager::Impl::getCarInfo(json_object *in_obj, json_object *out_obj) {
+    TRACE();
+    HMI_DEBUG("libwm", "called");
+
+    if (nullptr == in_obj) {
+        HMI_ERROR("libwm", "Argment is NULL!");
+        return -EINVAL;
+    }
+
+    if ((nullptr == this->loop) || (nullptr == this->wsj1)) {
+        HMI_ERROR("libwm", "LibWindowmanager is not initialized!");
+        return -EPERM;
+    }
+
+    int rc = -1;
+    /* send the request */
+    int rc2 =
+      this->api_call("GetCarInfo", in_obj,
+                     [&rc, out_obj](bool ok, json_object *j) {
+            if (ok) {
+                json_object *j_res;
+                HMI_DEBUG("libwm", "j:%s", json_object_get_string(j));
+                if (json_object_object_get_ex(j, "response", &j_res)) {
+                    HMI_DEBUG("libwm", "responce:%s", json_object_get_string(j_res));
+
+                    json_object *j_val = nullptr;
+                    if (!json_object_object_get_ex(j_res, "value", &j_val)) {
+                        HMI_ERROR("libwm", "Not found key \"value\"");
+                        rc = -EINVAL;
+                        return;
+                    }
+
+                    if (json_type_boolean == json_object_get_type(j_val)) {
+                        json_bool val_bool = json_object_get_boolean(j_val);
+                        json_object_object_add(out_obj, "value", json_object_new_boolean(val_bool));
+                    }
+                    else if (json_type_double == json_object_get_type(j_val)) {
+                        double val_double = json_object_get_double(j_val);
+                        json_object_object_add(out_obj, "value", json_object_new_double(val_double));
+                    }
+                    else if (json_type_string == json_object_get_type(j_val)) {
+                        const char* val_string = json_object_get_string(j_val);
+                        json_object_object_add(out_obj, "value", json_object_new_string(val_string));
+                    }
+                    else if (json_type_int == json_object_get_type(j_val)) {
+                        int val_int = json_object_get_int(j_val);
+                        json_object_object_add(out_obj, "value", json_object_new_int(val_int));
+                    }
+                    else {
+                        HMI_ERROR("libwm", "Invalid json_type");
+                        rc = -EINVAL;
+                    }
+                    rc = 0;
+                }
+                else {
+                    HMI_ERROR("libwm", "Not found key \"response\"");
+                    rc = -EINVAL;
+                    return;
+                }
+            } else {
+                HMI_ERROR("libwm", "Could not get car info: %s",
+                        j != nullptr ? json_object_to_json_string_ext(
+                                j, JSON_C_TO_STRING_PRETTY)
+                          : "no-info");
+                rc = -EINVAL;
+            }
+        });
+
+    if (0 > rc2) {
+        HMI_ERROR("libwm", "api_call() failed");
+        rc = rc2;
+    }
+
+    HMI_DEBUG("libwm", "out_obj:%s", json_object_get_string(out_obj));
+
+    return rc;
+}
+
 static void _on_reply_static(void *closure, struct afb_wsj1_msg *msg)
 {
 }
@@ -615,7 +694,8 @@ int LibWindowmanager::Impl::api_call(
     int rc = 0;
     if ((0 == strcmp("RequestSurface", verb)) ||
         (0 == strcmp("GetDisplayInfo", verb)) ||
-        (0 == strcmp("GetAreaInfo", verb))) {
+        (0 == strcmp("GetAreaInfo", verb)) ||
+        (0 == strcmp("GetCarInfo", verb))) {
         // We need to wrap the actual onReply call once in order to
         // *look* like a normal functions pointer (std::functions<>
         // with captures cannot convert to function pointers).
@@ -782,6 +862,16 @@ int LibWindowmanager::getAreaInfo(const char *label, json_object *out_obj) {
     return this->d->getAreaInfo(object, out_obj);
 }
 
+int LibWindowmanager::getCarInfo(json_object *in_obj, json_object *out_obj) {
+    return this->d->getCarInfo(in_obj, out_obj);
+}
+
+int LibWindowmanager::getCarInfo(const char *label, json_object *out_obj) {
+    json_object *object = json_object_new_object();
+    json_object_object_add(object, this->kKeyLabel, json_object_new_string(label));
+    return this->d->getCarInfo(object, out_obj);
+}
+
 void LibWindowmanager::set_event_handler(enum EventType et, handler_fun f) {
     return this->d->set_event_handler(et, std::move(f));
 }
diff --git a/src/libwindowmanager.h b/src/libwindowmanager.h
index bac9f46..59372e1 100644
--- a/src/libwindowmanager.h
+++ b/src/libwindowmanager.h
@@ -42,6 +42,7 @@ public:
     const char *kKeyDrawingArea = "drawing_area";
     const char *kKeyDrawingRect = "drawing_rect";
     const char *kKeyIviId = "ivi_id";
+    const char *kKeyLabel = "label";
 
     enum EventType {
        Event_Val_Invalid = -1,
@@ -79,8 +80,10 @@ public:
     int endDraw(json_object *object);
     int getDisplayInfo(json_object *object);
     int getAreaInfo(json_object *in_obj, json_object *out_obj);
+    int getCarInfo(json_object *in_obj, json_object *out_obj);
 
     int getAreaInfo(const char *label, json_object *out_obj);
+    int getCarInfo(const char *label, json_object *out_obj);
 
     void set_event_handler(enum EventType et, handler_fun f);