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/*
Copyright (C) 2010 George Kiagiadakis <kiagiadakis.george@gmail.com>
Copyright (C) 2010 Marco Ballesio <gibrovacco@gmail.com>
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __PLAYER_H__
#define __PLAYER_H__
#include <QtCore/QEvent>
#include <QtCore/QTimer>
#include <QtCore/QString>
#include <QtCore/QTime>
#include <QGst/Global>
#include <QGst/Pipeline>
#include <QGst/Ui/VideoWidget>
/* This is a simple example of a command-line player. It accepts the URI of
* an media file as the first command line argument and then constructs a pipeline
* that uses playbin2 to decode the stream.
* In the future this example will perhaps gain a simple GUI. */
class Player : public QGst::Ui::VideoWidget
{
Q_OBJECT;
public:
Player(QWidget *parent = 0);
~Player();
void setUri(const QString &uri);
QTime position();
QTime length();
QGst::State state();
/* Everything is compiled with QT_NO_KEYWORDS because otherwise Signals::emit wouldn't compile
* so use Q_SLOTS instead of "slots" */
public Q_SLOTS:
void stop();
void play();
void pause();
void setPosition(QTime pos);
void updatePosition();
Q_SIGNALS:
void positionChanged(QTime);
void stateChanged(QGst::State state);
private:
void busMessage(const QGst::MessagePtr & message);
void elementAdded(const QGst::ElementPtr & element);
void handleStateChange(QGst::StateChangedMessagePtr);
QGst::XOverlayPtr binVideoSink(QGst::BinPtr & bin);
/* This smart pointer is needed to keep a reference to the underlying GstPipeline object.
* Even if we are not going to use it, we must keep a reference to the pipeline,
* so that it remains in memory, together with all its child elements. If this
* reference is gone, the pipeline and all the elements will be destroyed.
* Note that we don't need to keep references to the individual elements, because
* when they are added in the pipeline, the pipeline keeps a reference on them. */
QGst::PipelinePtr m_pipeline;
QTimer m_positionTimer;
};
#endif
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