gstreamerASCIIConnection.cc

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// gstreamer
#include "gstreamerASCIIFactory.h"
#include "gstreamerConventions.h"
 
// Implementation note (non-Doxygen):
// Header documentation in gstreamerASCIIFactory.h is authoritative.
 
bool GstreamerTextFactory::openConnection() {
    if (ofile.is_open()) {
        // Already open for this thread; nothing to do.
        return true;
    }
 
    ofile.clear(); // clear fail/eof bits from last use
    // std::ios::out — open for writing.
    // std::ios::trunc — if the file already exists, truncate it to size 0 on open (wipe its contents). If it doesn’t exist, it will be created.
    // another variant: std::ios::app: append
    ofile.open(filename(), std::ios::out | std::ios::trunc);
 
    if (!ofile.is_open() || !ofile) {
        log->error(ERR_CANTOPENOUTPUT, SFUNCTION_NAME, " could not open file ", filename());
    }
 
    log->info(0, "GstreamerTextFactory: opened file " + filename());
    return true;
}
 
bool GstreamerTextFactory::closeConnectionImpl() {
    // Ensure any buffered events are written before closing the file.
    flushEventBuffer();
 
    if (ofile.is_open()) ofile.close();
 
    if (ofile.is_open()) { log->error(ERR_CANTCLOSEOUTPUT, SFUNCTION_NAME, " could not close file " + filename()); }
 
    return true;
}