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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QGSTREAMERPLAYERSESSION_H
#define QGSTREAMERPLAYERSESSION_H
#include <QObject>
#include <QtCore/qmutex.h>
#include "qgstreameraudiodecodercontrol.h"
#include <private/qgstreamerbushelper_p.h>
#include "qaudiodecoder.h"
#if defined(HAVE_GST_APPSRC)
#include <private/qgstappsrc_p.h>
#endif
#include <gst/gst.h>
#include <gst/app/gstappsink.h>
QT_BEGIN_NAMESPACE
class QGstreamerBusHelper;
class QGstreamerMessage;
class QGstreamerAudioDecoderSession : public QObject,
public QGstreamerBusMessageFilter
{
Q_OBJECT
Q_INTERFACES(QGstreamerBusMessageFilter)
public:
QGstreamerAudioDecoderSession(QObject *parent);
virtual ~QGstreamerAudioDecoderSession();
QGstreamerBusHelper *bus() const { return m_busHelper; }
QAudioDecoder::State state() const { return m_state; }
QAudioDecoder::State pendingState() const { return m_pendingState; }
bool processBusMessage(const QGstreamerMessage &message);
#if defined(HAVE_GST_APPSRC)
QGstAppSrc *appsrc() const { return m_appSrc; }
static void configureAppSrcElement(GObject*, GObject*, GParamSpec*,QGstreamerAudioDecoderSession* _this);
#endif
QString sourceFilename() const;
void setSourceFilename(const QString &fileName);
QIODevice* sourceDevice() const;
void setSourceDevice(QIODevice *device);
void start();
void stop();
QAudioFormat audioFormat() const;
void setAudioFormat(const QAudioFormat &format);
QAudioBuffer read();
bool bufferAvailable() const;
qint64 position() const;
qint64 duration() const;
static GstFlowReturn new_sample(GstAppSink *sink, gpointer user_data);
signals:
void stateChanged(QAudioDecoder::State newState);
void formatChanged(const QAudioFormat &format);
void sourceChanged();
void error(int error, const QString &errorString);
void bufferReady();
void bufferAvailableChanged(bool available);
void finished();
void positionChanged(qint64 position);
void durationChanged(qint64 duration);
private slots:
void updateDuration();
private:
void setAudioFlags(bool wantNativeAudio);
void addAppSink();
void removeAppSink();
void processInvalidMedia(QAudioDecoder::Error errorCode, const QString& errorString);
static qint64 getPositionFromBuffer(GstBuffer* buffer);
QAudioDecoder::State m_state;
QAudioDecoder::State m_pendingState;
QGstreamerBusHelper *m_busHelper;
GstBus *m_bus;
GstElement *m_playbin;
GstElement *m_outputBin;
GstElement *m_audioConvert;
GstAppSink *m_appSink;
#if defined(HAVE_GST_APPSRC)
QGstAppSrc *m_appSrc;
#endif
QString mSource;
QIODevice *mDevice; // QWeakPointer perhaps
QAudioFormat mFormat;
mutable QMutex m_buffersMutex;
int m_buffersAvailable;
qint64 m_position;
qint64 m_duration;
int m_durationQueries;
};
QT_END_NAMESPACE
#endif // QGSTREAMERPLAYERSESSION_H
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