qt - QImage into QML -

my application receives live-stream of jpegs on network (16 frames per second). live-stream should displayed using qml. receiving part written in c++, ui written using qml.

how image data qml window? have looked around how qimage displayed, did not find solution yet.

implementing qdeclarativeimageprovider , refreshing source of image on , on again using different name seems solution, see http://qt-project.org/doc/qt-4.8/qdeclarativeimageprovider.html.

yes, unfortunately image element missing update() method (to forcibly reset it). setting same source url not trigger update.

you can use workaround:

image {     source: "image://yourimageprovider/something"     cache: false     function reload() {         var oldsource = source;         source = "";         source = oldsource;     } } 

(or switch between 2 urls, same provider name, different paths...)

you should push jpegs receive qml layer. once receive new image, should emit signal c++'s side object exposed qml engine, , connect signal reload() function. connections element there.

connections {     target: myc++objectexposedtotheqmlengine     onnewframereceived: image.reload();  }