mitk::NavigationDataSet::Pointer mitk::NavigationDataReaderXML::Read(std::istream* stream)
{
//save old locale
char * oldLocale;
oldLocale = setlocale( LC_ALL, 0 );
//define own locale
std::locale C("C");
setlocale( LC_ALL, "C" );
// first get the file version
m_FileVersion = this->GetFileVersion(stream);
// check if we have a valid version: m_FileVersion has to be always bigger than 1 for playing
if (m_FileVersion < 1)
{
StreamInvalid("Playing not possible. Invalid file version!");
return 0;
}
m_NumberOfOutputs = this->GetNumberOfNavigationDatas(stream);
if (m_NumberOfOutputs == 0) { return 0; }
mitk::NavigationDataSet::Pointer dataSet = this->ReadNavigationDataSet();
//switch back to old locale
setlocale( LC_ALL, oldLocale );
return dataSet;
}
void mitk::NavigationDataPlayer::InitPlayer()
{
if (m_Stream == NULL)
{
StreamInvalid("Playing not possible. Wrong file name or path?");
return;
}
if (!m_Stream->good())
{
StreamInvalid("Playing not possible. Stream is not good!");
return;
}
//first get the file version
m_FileVersion = GetFileVersion(m_Stream);
//check if we have a valid version: m_FileVersion has to be always bigger than 1 for playing
if (m_FileVersion < 1)
{
StreamInvalid("Playing not possible. Invalid file version!");
return;
}
if(m_NumberOfOutputs == 0) {m_NumberOfOutputs = GetNumberOfNavigationDatas(m_Stream);}
//with the information about the tracked tool number we can generate the output
if (m_NumberOfOutputs > 0)
{
//Generate the output only if there are changes to the amount of outputs
//This happens when the player is stopped and start again with different file
if (this->GetNumberOfOutputs() != m_NumberOfOutputs) {SetNumberOfOutputs(m_NumberOfOutputs);}
//initialize the player with first data
GetFirstData();
//set stream valid
m_ErrorMessage = "";
m_StreamValid = true;
}
else
{
StreamInvalid("The input stream seems to have NavigationData incompatible format");
return;
}
}
