Built and linked nlohmann::json package

app/src/main/cpp/Demo.cpp

@@ -15,17 +15,50 @@
 #include <android/sharedmem.h>
 #include <sys/mman.h>
 
+#include "nlohmann/json.hpp"
+
 #include "model/Song.h"
 
-int demoCall()
+model::Song initSong();
+
+int demoCall();
+
+void printSong(const model::Song&);
+
+
+model::Song initSong()
 {
     model::Song song;
     song.title = "hello";
     song.artist = "some artist";
+
+
+    return song;
+}
+
+
+int demoCall()
+{
+    model::Song song = initSong();
+
     std::cout << "testing" << std::endl;
+    printSong(song);
+
     return 0;
 }
 
+
+void printSong(const model::Song& song)
+{
+    std::cout << "\nsong information" << std::endl;
+    std::cout << "title: " << song.title << std::endl;
+    std::cout << "artist: " << song.artist << std::endl;
+    std::cout << "album: " << song.album << std::endl;
+    std::cout << "genre: " << song.genre << std::endl;
+    std::cout << "year: " << song.year << std::endl;
+}
+
+
 extern "C"
 JNIEXPORT void
         JNICALL
@@ -34,4 +67,14 @@ Java_com_example_mear_activities_MainActivity_test(
         jobject /* this */) {
 
     demoCall();
-}
+}
+
+extern "C"
+JNIEXPORT void
+JNICALL
+Java_com_example_mear_activities_DemoStreamActivity_test(
+        JNIEnv *env,
+        jobject /* this */) {
+
+    demoCall();
+}