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Fix gstreamer camera when env var QT_NO_GLIB is set

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It would fall into the glib code path because it was only checking
if QT_NO_GLIB was defined, but ignoring the env variable.

gst_bus_add_watch_full only works with a glib event loop running.

Task-Id: QTBUG-51607
Change-Id: I726afd5d6e114eacea6e5bc71e7a6e2d1c5bbd74
Reviewed-by: Yoann Lopes <yoann.lopes@theqtcompany.com>
This commit is contained in:
Sergio Martins
2016-03-02 12:48:39 +00:00
committed by Yoann Lopes
parent 176179fb32
commit d2d0d93f76
1 changed files with 20 additions and 20 deletions
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40
src/gsttools/qgstreamerbushelper.cpp
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@@ -35,6 +35,8 @@
#include <QtCore/qtimer.h>
#include <QtCore/qmutex.h>
#include <QtCore/qlist.h>
#include <QtCore/qabstracteventdispatcher.h>
#include <QtCore/qcoreapplication.h>
#include "qgstreamerbushelper_p.h"
@@ -47,31 +49,31 @@ class QGstreamerBusHelperPrivate : public QObject
public:
QGstreamerBusHelperPrivate(QGstreamerBusHelper *parent, GstBus* bus) :
QObject(parent),
m_tag(0),
m_bus(bus),
m_helper(parent)
m_helper(parent),
m_intervalTimer(nullptr)
{
#ifdef QT_NO_GLIB
Q_UNUSED(bus);
m_intervalTimer = new QTimer(this);
m_intervalTimer->setInterval(250);
connect(m_intervalTimer, SIGNAL(timeout()), SLOT(interval()));
m_intervalTimer->start();
#else
m_tag = gst_bus_add_watch_full(bus, 0, busCallback, this, NULL);
#endif
// glib event loop can be disabled either by env variable or QT_NO_GLIB define, so check the dispacher
QAbstractEventDispatcher *dispatcher = QCoreApplication::eventDispatcher();
const bool hasGlib = dispatcher && dispatcher->inherits("QEventDispatcherGlib");
if (!hasGlib) {
m_intervalTimer = new QTimer(this);
m_intervalTimer->setInterval(250);
connect(m_intervalTimer, SIGNAL(timeout()), SLOT(interval()));
m_intervalTimer->start();
} else {
m_tag = gst_bus_add_watch_full(bus, G_PRIORITY_DEFAULT, busCallback, this, NULL);
}
}
~QGstreamerBusHelperPrivate()
{
m_helper = 0;
#ifdef QT_NO_GLIB
m_intervalTimer->stop();
#else
g_source_remove(m_tag);
#endif
delete m_intervalTimer;
if (m_tag)
g_source_remove(m_tag);
}
GstBus* bus() const { return m_bus; }
@@ -110,9 +112,7 @@ private:
guint m_tag;
GstBus* m_bus;
QGstreamerBusHelper* m_helper;
#ifdef QT_NO_GLIB
QTimer* m_intervalTimer;
#endif
private slots:
void doProcessMessage(const QGstreamerMessage& msg)