bool TCPServerProcessor::process()
{
QVariantList frameData;
PipelineElement::InputPinMap::iterator itr = m_inputPins.begin();
for( ; itr != m_inputPins.end(); ++itr )
{
if( itr->second->isConnected() )
{
QVariant v;
itr->second->getVariant(v);
frameData.append(v);
}
}
quint32 frameNumber = (quint32)getProcessingSerial();
emit sendFrame(frameNumber, frameData);
return true;
}
bool TCPServerProcessor::process()
{
QVariantList frameData;
PipelineElement::InputPinMap::iterator itr = m_inputPins.begin();
for( ; itr != m_inputPins.end(); ++itr )
{
plv::IInputPin* pin = itr->second.getPtr();
if( pin->isConnected() )
{
if( pin->getTypeId() == m_cvMatDataTypeId &&
m_convertCvMatToQImage )
{
QVariant v;
pin->getVariant(v);
plv::CvMatData data = v.value<plv::CvMatData>();
QImage img = plvgui::ImageConverter::cvMatToQImageNoThrow(data);
QVariant v2;
v2.setValue(img);
frameData.append(v2);
}
else
{
QVariant v;
pin->getVariant(v);
frameData.append(v);
}
}
}
quint32 frameNumber = (quint32)getProcessingSerial();
QByteArray block;
QDataStream out(&block, QIODevice::WriteOnly);
out.setVersion(QDataStream::Qt_4_0);
// write the header
out << (quint32)0; // reserved for number of bytes later
out << (quint32)PROTO_FRAME; // msg type
out << (quint32)frameNumber; // frame number / serial number
out << (quint32)frameData.size(); // number of arguments
// write all data to the stream
foreach( const QVariant& v, frameData )
{
#if 0
// we do not want QImage to convert
// to the default PNG because that
// is way too slow
if( v.type() == QVariant::Image )
{
out << QVariant::UserType;
if(out.version() >= QDataStream::Qt_4_2)
out << qint8(v.isNull());
QByteArray a("plv::QImageWrapper");
out << a;
if( !v.isValid() )
{
out << QString();
}
else
{
QImage img = v.value<QImage>();
QImageWriter writer(out.device(), "png");
if(!writer.write(img))
{
QString err = writer.errorString();
qWarning() << "Failed to write image to stream because " << err;
}
}
}
else
{
out << v;
}
#else
out << v;
#endif
}
// calculate size of total data and write it as first 4 bytes
out.device()->seek(0);
out << (quint32)(block.size() - sizeof(quint32));
m_server->sendFrame(frameNumber, block);
return true;
}