Changed directory structure and renamed applications

- autopilot -> drone_controller
- rtsp_ai_player -> ai_controller
- added top level qmake project file
- updated documentation
- moved small demo applications from tmp/ to misc/

misc/udp/udp_server/udpserver.cpp

@@ -0,0 +1,42 @@
+#include <QJsonObject>
+#include <QJsonDocument>
+#include "udpserver.h"
+
+UdpServer::UdpServer(int portNumber, QObject *parent)
+    : QObject{parent}
+{
+    mUdpSocket = new QUdpSocket(this);
+    connect(mUdpSocket, &QUdpSocket::readyRead, this, &UdpServer::readPendingDatagrams);
+    mUdpSocket->bind(QHostAddress::Any, portNumber);
+}
+
+
+void UdpServer::readPendingDatagrams()
+{
+    while (mUdpSocket->hasPendingDatagrams()) {
+        QByteArray datagram;
+        datagram.resize(mUdpSocket->pendingDatagramSize());
+        mUdpSocket->readDatagram(datagram.data(), datagram.size());
+
+        QJsonParseError jsonError;
+        QJsonDocument jsonDoc = QJsonDocument::fromJson(datagram, &jsonError);
+        if (jsonError.error != QJsonParseError::NoError) {
+            qWarning() << "Error parsing JSON:" << jsonError.errorString();
+            continue;
+        }
+
+        if (jsonDoc.isObject()) {
+            emit newJsonDocument(jsonDoc);
+        }
+
+        // Test code to see that valid value was in the doc.
+        QJsonObject jsonObj = jsonDoc.object();
+        if (jsonObj.contains("value") && jsonObj["value"].isDouble()) {
+            int value = jsonObj["value"].toInt();
+            qDebug() << "Received value:" << value;
+        }
+        else {
+            qWarning() << "Invalid or missing 'value' field in JSON";
+        }
+    }
+}