refs #277, slow auio init

* fixed QHostInfo::localHostName()
* move to BlackMisc, as it can be used elsewhere
* temp. change, moved methods in body until refs #278, #277 is fixed/ resolved

src/blackmisc/audiodevice.cpp

@@ -5,7 +5,6 @@
 
 #include "audiodevice.h"
 #include "blackmisc/blackmiscfreefunctions.h"
-#include <QtNetwork/QHostInfo>
 #include <tuple>
 
 namespace BlackMisc
@@ -17,7 +16,7 @@ namespace BlackMisc
          */
         CAudioDevice::CAudioDevice() :
             m_type(Unknown), m_deviceIndex(invalidDeviceIndex()),
-            m_deviceName(""), m_hostName(CAudioDevice::computerHostName())
+            m_deviceName(""), m_hostName(BlackMisc::localHostName())
         {
             // void
         }
@@ -27,20 +26,11 @@ namespace BlackMisc
          */
         CAudioDevice::CAudioDevice(DeviceType type, const qint16 index, const QString &name) :
             m_type(type), m_deviceIndex(index),
-            m_deviceName(name), m_hostName(CAudioDevice::computerHostName())
+            m_deviceName(name), m_hostName(BlackMisc::localHostName())
         {
             // void
         }
 
-        /*
-         * Host name
-         */
-        const QString &CAudioDevice::computerHostName()
-        {
-            static const QString hostName = QHostInfo::fromName(QHostInfo::localHostName()).localHostName();
-            return hostName;
-        }
-
         /*
          * Compare
          */

src/blackmisc/audiodevice.h

@@ -135,10 +135,6 @@ namespace BlackMisc
             QString m_deviceName;
             //! \brief We use a DBus based system. Hence an audio device can reside on a differen computers, this here is its name
             QString m_hostName;
-
-        private:
-            //! Own host name
-            static const QString &computerHostName();
         };
 
     } // Audio

src/blackmisc/blackmiscfreefunctions.cpp

@@ -15,6 +15,10 @@
 #include "variant.h"
 #include "statusmessagelist.h"
 #include "audioallclasses.h"
+#include <QtNetwork/QHostInfo>
+#include <QProcessEnvironment>
+#include <QSysInfo>
+
 
 /*
  * Metadata for PQs
@@ -439,3 +443,23 @@ void BlackMisc::displayAllUserMetatypesTypes()
         qDebug() << "type:" << mt << "name:" << QMetaType::typeName(mt) << QMetaType::sizeOf(mt) << BlackMisc::heapSizeOf(metaType);
     }
 }
+
+/*
+ * Local host name
+ */
+const QString &BlackMisc::localHostName()
+{
+    static const QString hostName = QHostInfo::localHostName();
+    return hostName;
+}
+
+/*
+ * Local host name
+ */
+const QString &BlackMisc::localHostNameEnvVariable()
+{
+    static const QString hostName =
+        QProcessEnvironment::systemEnvironment().value("COMPUTERNAME",
+                QProcessEnvironment::systemEnvironment().value("HOSTNAME"));
+    return hostName;
+}

src/blackmisc/blackmiscfreefunctions.h

@@ -140,6 +140,12 @@ namespace BlackMisc
     //! Real heap size of an object
     size_t heapSizeOf(const QMetaObject &objectType);
 
+    //! Get local host name
+    const QString &localHostName();
+
+    //! Get local host name env.variable
+    const QString &localHostNameEnvVariable();
+
 } // BlackMisc
 
 #endif // guard