const'ref

src/docclipbase.cpp

@@ -478,7 +478,7 @@ QString DocClipBase::markerComment(const GenTime &t) const
     return QString();
 }
 
-CommentedTime DocClipBase::markerAt(GenTime t) const
+CommentedTime DocClipBase::markerAt(const GenTime &t) const
 {
     QList < CommentedTime >::ConstIterator itt = m_snapMarkers.begin();
     while (itt != m_snapMarkers.end()) {
@@ -1048,7 +1048,7 @@ void DocClipBase::setProperties(QMap <QString, QString> properties)
     if (refreshProducer) slotRefreshProducer();
 }
 
-void DocClipBase::setMetadata(QMap <QString, QString> properties, QString tool)
+void DocClipBase::setMetadata(const QMap <QString, QString> &properties, const QString &tool)
 {
     QMapIterator<QString, QString> i(properties);
     while (i.hasNext()) {
@@ -1340,7 +1340,7 @@ bool DocClipBase::hasAudioCodec(const QString &codec) const
 }
 
 
-void DocClipBase::slotExtractImage(QList <int> frames)
+void DocClipBase::slotExtractImage(const QList <int> &frames)
 {
     if (m_thumbProd == NULL) return;
     m_thumbProd->extractImage(frames);

src/docclipbase.h

@@ -275,12 +275,12 @@ public slots:
     void addSnapMarker(const CommentedTime &marker);
     QList < GenTime > snapMarkers() const;
     QString markerComment(const GenTime &t) const;
-    CommentedTime markerAt(GenTime t) const;
+    CommentedTime markerAt(const GenTime &t) const;
     void setClipThumbFrame(const uint &ix);
     uint getClipThumbFrame() const;
     void setProperties(QMap<QString, QString> properties);
-    void setMetadata(QMap <QString, QString> properties, QString tool = QString());
-    void slotExtractImage(QList <int> frames);
+    void setMetadata(const QMap <QString, QString> &properties, const QString &tool = QString());
+    void slotExtractImage(const QList <int> &frames);
 
 signals:
     void gotAudioData();