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FiffFileSharer

Namespace: FIFFLIB  ·  Library: FIFF Library

#include <fiff/fiff_file_sharer.h>

class FIFFLIB::FiffFileSharer

Copies FIFF recordings into a shared directory and signals their arrival to a watching consumer.

src/examples/ex_fiff_structure/main.cpp
// Hand a finished recording to another application through a watched directory.
QDir::setCurrent(tmp.path());
FiffFileSharer consumer("shared");
QStringList arrived;
QObject::connect(&consumer, &FiffFileSharer::newFileAtPath, [&](const QString& path) { arrived << path; });
consumer.initWatcher();
FiffFileSharer producer("shared");
producer.copyRealtimeFile(rawPath); // shared/realtime_file0_raw.fif

Inheritance​

Public Methods​

FiffFileSharer()​

Constructs a FiffFileSharer with default paramaters (based on m_sDefaultDirectory and m_sDefaultFileName).

FiffFileSharer(sDirName)​

Constructs a FiffFileSharer to watch/save to sDirName.

Parameters:

  • sDirName : const QString & Directory to/from which data will saved/read

copyRealtimeFile(sSourcePath)​

Copies an unfinished FIFF file into the shared directory and closes its raw block; the copy appears there only once it is complete.

Parameters:

  • sSourcePath : const QString & source file to ber copied

initWatcher()​

Sets member QFileSystemWatcher to watch set directory.

Example​

Used in examples​

ex_fiff_structure​

FIFF library: fixed-length epochs, CTF compensation, the file directory and raw buffers, and handing.

src/examples/ex_fiff_structure/main.cpp, line 152
// Hand a finished recording to another application through a watched directory.
QDir::setCurrent(tmp.path());
FiffFileSharer consumer("shared");
QStringList arrived;
QObject::connect(&consumer, &FiffFileSharer::newFileAtPath, [&](const QString& path) { arrived << path; });
consumer.initWatcher();
FiffFileSharer producer("shared");
producer.copyRealtimeFile(rawPath); // shared/realtime_file0_raw.fif
QEventLoop loop;
QTimer::singleShot(5000, &loop, &QEventLoop::quit);
QObject::connect(&consumer, &FiffFileSharer::newFileAtPath, &loop, &QEventLoop::quit);
if (arrived.isEmpty())
    loop.exec();

Authors of this file​