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Handle DDE already running

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This commit is contained in:
David Rowe 2015-04-13 23:12:13 -07:00
parent b7f7cebb80
commit f509d08378
1 changed files with 12 additions and 8 deletions
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20
interface/src/devices/DdeFaceTracker.cpp
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@ -176,21 +176,25 @@ DdeFaceTracker::~DdeFaceTracker() {
void DdeFaceTracker::setEnabled(bool enabled) {
#ifdef HAVE_DDE
if (enabled && !_ddeProcess) {
qDebug() << "[Info] DDE Face Tracker Starting";
_ddeProcess = new QProcess(qApp);
connect(_ddeProcess, SIGNAL(finished(int, QProcess::ExitStatus)), SLOT(processFinished(int, QProcess::ExitStatus)));
_ddeProcess->start(QCoreApplication::applicationDirPath() + DDE_PROGRAM_PATH, DDE_ARGUMENTS);
}
// isOpen() does not work as one might expect on QUdpSocket; don't test isOpen() before closing socket.
_udpSocket.close();
if (enabled) {
_udpSocket.bind(_host, _serverPort);
}
if (enabled && !_ddeProcess) {
// Terminate any existing DDE process, perhaps left running after an Interface crash
const char* DDE_EXIT_COMMAND = "exit";
_udpSocket.writeDatagram(DDE_EXIT_COMMAND, DDE_SERVER_ADDR, _controlPort);
qDebug() << "[Info] DDE Face Tracker Starting";
_ddeProcess = new QProcess(qApp);
connect(_ddeProcess, SIGNAL(finished(int, QProcess::ExitStatus)), SLOT(processFinished(int, QProcess::ExitStatus)));
_ddeProcess->start(QCoreApplication::applicationDirPath() + DDE_PROGRAM_PATH, DDE_ARGUMENTS);
}
if (!enabled && _ddeProcess) {
_ddeProcess->kill();
_ddeProcess->kill(); // More robust than trying to send an "exit" command to DDE
_ddeProcess = NULL;
qDebug() << "[Info] DDE Face Tracker Stopped";
}