Need help on setting QtGstreamer element property

[ly tran]

Hi,

I'm developing softphone using QtGStreamer and libnice for NAT traversal.

Libnice have nicesrc and nicesink element for RTP transmission.

I'm now having problem when setting "agent" property for nicesrc Element in QtGstreamer

Here is my code

int channel_rx(NiceAgent *v_agent,int v_stream_id){

    QGst::PipelinePtr m_pipeline;

    QGst::ElementPtr vudpsrc, videofilter, videofilter_rx, vdecoder, vdepayload, ffcolor, videosink;

    QGst::CapsPtr vcaps, rxcaps;

    QGst::BinPtr rxBin;

  rxBin = QGst::Bin::create();

    m_pipeline = QGst::Pipeline::create();

    vudpsrc = QGst::ElementFactory::make("nicesrc");

    vudpsrc->setProperty("stream", v_stream_id);

    vudpsrc->setProperty("component", 1);

    QGlib::Type type = QGlib::Type::fromInstance(v_agent);

    QGlib::Value agent_type =
 vudpsrc->property("agent");

    agent_type = QGlib::Value::create(type);

    vudpsrc->setProperty("agent", agent_type);  //compile OK but have the following error when run
			//(SIPPhoneGUI:8513): GLib-GObject-WARNING **: unable to set property `agent' 
				//of type `NiceAgent' from value of type `GType'
    vudpsrc->setProperty("agent", v_agent);  // cannot compile because of 
				/usr/include/QtGStreamer/QGst/../QGlib/type.h:182: error: could not convert 'QGlib::GetTypeImpl<_NiceAgent*>()' 
				from 'QGlib::GetTypeImpl<_NiceAgent*>' to 'QGlib::Type'

Can you help me how to set the "agent" property ?

Thanks.

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