Deep redesign: fixed RTLSDR input plugin

plugins/samplesource/filesource/filesourceinput.cpp

@@ -109,6 +109,11 @@ void FileSourceInput::openFileStream()
 	getOutputMessageQueue()->push(report);
 }
 
+bool FileSourceInput::init(const Message& message)
+{
+	return false;
+}
+
 bool FileSourceInput::start(int device)
 {
 	QMutexLocker mutexLocker(&m_mutex);

plugins/samplesource/filesource/filesourceplugin.h

@@ -20,7 +20,7 @@
 #include <QObject>
 #include "plugin/plugininterface.h"
 
-class FileSourcePlugin : public QObject, PluginInterface {
+class FileSourcePlugin : public QObject, public PluginInterface {
 	Q_OBJECT
 	Q_INTERFACES(PluginInterface)
 	Q_PLUGIN_METADATA(IID "org.osmocom.sdr.samplesource.filesource")