demo version

demo/camera_client/dependencies/libvisiontransfer/visiontransfer/deviceenumeration.h

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+/*******************************************************************************
+ * Copyright (c) 2021 Nerian Vision GmbH
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *******************************************************************************/
+
+#ifndef VISIONTRANSFER_DEVICEENUMERATION_H
+#define VISIONTRANSFER_DEVICEENUMERATION_H
+
+#include <vector>
+#include "visiontransfer/common.h"
+#include "visiontransfer/deviceinfo.h"
+
+namespace visiontransfer {
+
+/**
+ * \brief Allows for the discovery of devices in the network.
+ *
+ * Devices are discovered by transmitting a broad-cast message to all
+ * network interfaces and then waiting for replies.
+ */
+class VT_EXPORT DeviceEnumeration {
+public:
+    typedef std::vector<DeviceInfo> DeviceList;
+
+    DeviceEnumeration();
+    ~DeviceEnumeration();
+
+    /**
+     * \brief Discovers new devices and returns the list of all devices
+     * that have been found
+     * \return List of devices found
+     */
+    DeviceList discoverDevices() {
+        // This code is inlined in order to provide binary compatibility with
+        // different STL implementations
+        int numDevices = 0;
+        DeviceInfo* devices = getDevicesPointer(&numDevices);
+        std::vector<DeviceInfo> ret(devices, &devices[numDevices]);
+        return ret;
+    }
+
+private:
+    // We follow the pimpl idiom
+    class Pimpl;
+    Pimpl* pimpl;
+
+    // This class cannot be copied
+    DeviceEnumeration(const DeviceEnumeration& other);
+    DeviceEnumeration& operator=(const DeviceEnumeration&);
+
+    DeviceInfo* getDevicesPointer(int* numDevices);
+};
+
+} // namespace
+
+#endif