Moved general gstreamer helper classes into separate library.
Cleaned up configuration of gstreamer with a separate config test. Change-Id: I1ec9ee466233687fbcfdc544a12d9fce578e4379 Reviewed-on: http://codereview.qt-project.org/6459 Sanity-Review: Qt Sanity Bot <qt_sanity_bot@ovi.com> Reviewed-by: Michael Goddard <michael.goddard@nokia.com>
This commit is contained in:
Jonas Rabbe
Qt by Nokia
237
src/gsttools/qgstreamerbushelper.cpp
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237
src/gsttools/qgstreamerbushelper.cpp
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** GNU Lesser General Public License Usage
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** This file may be used under the terms of the GNU Lesser General Public
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** License version 2.1 as published by the Free Software Foundation and
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** appearing in the file LICENSE.LGPL included in the packaging of this
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** file. Please review the following information to ensure the GNU Lesser
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** General Public License version 2.1 requirements will be met:
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU General
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** Public License version 3.0 as published by the Free Software Foundation
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** and appearing in the file LICENSE.GPL included in the packaging of this
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** file. Please review the following information to ensure the GNU General
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** Public License version 3.0 requirements will be met:
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** http://www.gnu.org/copyleft/gpl.html.
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**
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** Other Usage
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** Alternatively, this file may be used in accordance with the terms and
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** conditions contained in a signed written agreement between you and Nokia.
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include <QtCore/qmap.h>
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#include <QtCore/qtimer.h>
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#include <QtCore/qmutex.h>
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#include <QtCore/qlist.h>
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#include "qgstreamerbushelper_p.h"
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#ifndef QT_NO_GLIB
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class QGstreamerBusHelperPrivate : public QObject
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{
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Q_OBJECT
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public:
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void addWatch(GstBus* bus, QGstreamerBusHelper* helper)
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{
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setParent(helper);
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m_tag = gst_bus_add_watch_full(bus, 0, busCallback, this, NULL);
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m_helper = helper;
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}
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void removeWatch(QGstreamerBusHelper* helper)
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{
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Q_UNUSED(helper);
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g_source_remove(m_tag);
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}
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static QGstreamerBusHelperPrivate* instance()
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{
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return new QGstreamerBusHelperPrivate;
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}
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private:
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void processMessage(GstBus* bus, GstMessage* message)
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{
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Q_UNUSED(bus);
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QGstreamerMessage msg(message);
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foreach (QGstreamerBusMessageFilter *filter, busFilters) {
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if (filter->processBusMessage(msg))
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break;
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}
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emit m_helper->message(msg);
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}
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static gboolean busCallback(GstBus *bus, GstMessage *message, gpointer data)
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{
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reinterpret_cast<QGstreamerBusHelperPrivate*>(data)->processMessage(bus, message);
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return TRUE;
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}
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guint m_tag;
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QGstreamerBusHelper* m_helper;
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public:
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GstBus* bus;
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QMutex filterMutex;
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QList<QGstreamerSyncMessageFilter*> syncFilters;
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QList<QGstreamerBusMessageFilter*> busFilters;
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};
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#else
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class QGstreamerBusHelperPrivate : public QObject
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{
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Q_OBJECT
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typedef QMap<QGstreamerBusHelper*, GstBus*> HelperMap;
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public:
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void addWatch(GstBus* bus, QGstreamerBusHelper* helper)
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{
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m_helperMap.insert(helper, bus);
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if (m_helperMap.size() == 1)
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m_intervalTimer->start();
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}
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void removeWatch(QGstreamerBusHelper* helper)
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{
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m_helperMap.remove(helper);
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if (m_helperMap.size() == 0)
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m_intervalTimer->stop();
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}
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static QGstreamerBusHelperPrivate* instance()
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{
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static QGstreamerBusHelperPrivate self;
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return &self;
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}
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private slots:
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void interval()
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{
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for (HelperMap::iterator it = m_helperMap.begin(); it != m_helperMap.end(); ++it) {
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GstMessage* message;
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while ((message = gst_bus_poll(it.value(), GST_MESSAGE_ANY, 0)) != 0) {
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QGstreamerMessage msg(message);
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foreach (QGstreamerBusMessageFilter *filter, busFilters) {
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if (filter->processBusMessage(msg))
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break;
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}
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emit it.key()->message(msg);
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gst_message_unref(message);
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}
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emit it.key()->message(QGstreamerMessage());
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}
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}
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private:
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QGstreamerBusHelperPrivate()
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{
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m_intervalTimer = new QTimer(this);
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m_intervalTimer->setInterval(250);
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connect(m_intervalTimer, SIGNAL(timeout()), SLOT(interval()));
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}
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HelperMap m_helperMap;
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QTimer* m_intervalTimer;
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public:
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GstBus* bus;
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QMutex filterMutex;
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QList<QGstreamerSyncMessageFilter*> syncFilters;
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QList<QGstreamerBusMessageFilter*> busFilters;
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};
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#endif
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static GstBusSyncReply syncGstBusFilter(GstBus* bus, GstMessage* message, QGstreamerBusHelperPrivate *d)
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{
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Q_UNUSED(bus);
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QMutexLocker lock(&d->filterMutex);
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foreach (QGstreamerSyncMessageFilter *filter, d->syncFilters) {
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if (filter->processSyncMessage(QGstreamerMessage(message)))
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return GST_BUS_DROP;
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}
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return GST_BUS_PASS;
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}
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/*!
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\class gstreamer::QGstreamerBusHelper
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\internal
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*/
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QGstreamerBusHelper::QGstreamerBusHelper(GstBus* bus, QObject* parent):
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QObject(parent),
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d(QGstreamerBusHelperPrivate::instance())
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{
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d->bus = bus;
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d->addWatch(bus, this);
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gst_bus_set_sync_handler(bus, (GstBusSyncHandler)syncGstBusFilter, d);
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}
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QGstreamerBusHelper::~QGstreamerBusHelper()
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{
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d->removeWatch(this);
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gst_bus_set_sync_handler(d->bus,0,0);
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}
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void QGstreamerBusHelper::installMessageFilter(QObject *filter)
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{
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QGstreamerSyncMessageFilter *syncFilter = qobject_cast<QGstreamerSyncMessageFilter*>(filter);
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if (syncFilter) {
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QMutexLocker lock(&d->filterMutex);
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if (!d->syncFilters.contains(syncFilter))
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d->syncFilters.append(syncFilter);
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}
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QGstreamerBusMessageFilter *busFilter = qobject_cast<QGstreamerBusMessageFilter*>(filter);
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if (busFilter && !d->busFilters.contains(busFilter))
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d->busFilters.append(busFilter);
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}
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void QGstreamerBusHelper::removeMessageFilter(QObject *filter)
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{
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QGstreamerSyncMessageFilter *syncFilter = qobject_cast<QGstreamerSyncMessageFilter*>(filter);
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if (syncFilter) {
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QMutexLocker lock(&d->filterMutex);
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d->syncFilters.removeAll(syncFilter);
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}
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QGstreamerBusMessageFilter *busFilter = qobject_cast<QGstreamerBusMessageFilter*>(filter);
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if (busFilter)
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d->busFilters.removeAll(busFilter);
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}
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#include "qgstreamerbushelper.moc"
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