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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef qgstpipeline_p_H
#define qgstpipeline_p_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qtmultimediaglobal_p.h>
#include <QObject>
#include <qgst_p.h>
QT_BEGIN_NAMESPACE
class QGstreamerMessage;
class QGstreamerSyncMessageFilter {
public:
//returns true if message was processed and should be dropped, false otherwise
virtual bool processSyncMessage(const QGstreamerMessage &message) = 0;
};
class QGstreamerBusMessageFilter {
public:
//returns true if message was processed and should be dropped, false otherwise
virtual bool processBusMessage(const QGstreamerMessage &message) = 0;
};
class QGstPipelinePrivate;
class QGstPipeline : public QGstBin
{
QGstPipelinePrivate *d = nullptr;
public:
constexpr QGstPipeline() = default;
QGstPipeline(const QGstPipeline &o);
QGstPipeline &operator=(const QGstPipeline &o);
QGstPipeline(const char *name);
QGstPipeline(GstPipeline *p);
~QGstPipeline() override;
// This is needed to help us avoid sending QVideoFrames or audio buffers to the
// application while we're prerolling the pipeline.
// QMediaPlayer is still in a stopped state, while we put the gstreamer pipeline into a
// Paused state so that we can get the required metadata of the stream and also have a fast
// transition to play.
bool inStoppedState() const;
void setInStoppedState(bool stopped);
void setFlushOnConfigChanges(bool flush);
void installMessageFilter(QGstreamerSyncMessageFilter *filter);
void removeMessageFilter(QGstreamerSyncMessageFilter *filter);
void installMessageFilter(QGstreamerBusMessageFilter *filter);
void removeMessageFilter(QGstreamerBusMessageFilter *filter);
GstStateChangeReturn setState(GstState state);
GstPipeline *pipeline() const { return GST_PIPELINE_CAST(m_object); }
void dumpGraph(const char *fileName)
{
if (isNull())
return;
#if 1 //def QT_GST_CAPTURE_DEBUG
GST_DEBUG_BIN_TO_DOT_FILE(bin(),
GstDebugGraphDetails(GST_DEBUG_GRAPH_SHOW_ALL |
GST_DEBUG_GRAPH_SHOW_MEDIA_TYPE | GST_DEBUG_GRAPH_SHOW_NON_DEFAULT_PARAMS | GST_DEBUG_GRAPH_SHOW_STATES),
fileName);
#else
Q_UNUSED(fileName);
#endif
}
void beginConfig();
void endConfig();
void flush();
bool seek(qint64 pos, double rate);
bool setPlaybackRate(double rate);
double playbackRate() const;
bool setPosition(qint64 pos);
qint64 position() const;
qint64 duration() const;
};
QT_END_NAMESPACE
#endif
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