gstreamerROOTConnection.cc

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// gstreamer
#include "gstreamerROOTFactory.h"
#include "gstreamerConventions.h"
 
// root
#include <TFile.h>
 
// Implementation summary:
// Manage the lifetime of the ROOT file that owns all trees created by the plugin.
 
bool GstreamerRootFactory::openConnection() {
    log->debug(NORMAL, "GstreamerRootFactory::openConnection -> opening file " + filename());
 
    rootfile = std::make_unique<TFile>(filename().c_str(), "RECREATE");
 
    if (rootfile->IsZombie()) {
        log->error(gstreamer::ERR_CANTOPENOUTPUT,
                   "GstreamerRootFactory: could not create file " + filename() + " (file is a zombie)");
    }
 
    log->info(1, SFUNCTION_NAME, "GstreamerRootFactory: opened file " + filename());
 
    return true;
}
 
bool GstreamerRootFactory::closeConnectionImpl() {
    // The public closeConnection() wrapper already flushes buffered events before this method runs.
 
    // Persist all tree content, then destroy tree wrappers before closing the file so ROOT
    // object ownership is torn down in a controlled order.
    rootfile->Write();
    gRootTrees.clear();
    rootfile->Close();
 
    log->info(1, SFUNCTION_NAME, "GstreamerRootFactory: closed file " + filename());
 
    return true;
}