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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QGSTREAMERCAPTURESESSION_H
#define QGSTREAMERCAPTURESESSION_H
#include <qmediarecordercontrol.h>
#include <qmediarecorder.h>
#include <QtCore/qurl.h>
#include <gst/gst.h>
#include <private/qgstreamerbushelper_p.h>
QT_BEGIN_NAMESPACE
class QGstreamerMessage;
class QGstreamerBusHelper;
class QGstreamerAudioEncode;
class QGstreamerVideoEncode;
class QGstreamerImageEncode;
class QGstreamerRecorderControl;
class QGstreamerMediaContainerControl;
class QGstreamerVideoRendererInterface;
class QGstreamerElementFactory
{
public:
virtual GstElement *buildElement() = 0;
virtual void prepareWinId() {}
};
class QGstreamerVideoInput : public QGstreamerElementFactory
{
public:
virtual QList<qreal> supportedFrameRates(const QSize &frameSize = QSize()) const = 0;
virtual QList<QSize> supportedResolutions(qreal frameRate = -1) const = 0;
};
class QGstreamerCaptureSession : public QObject, public QGstreamerBusMessageFilter
{
Q_OBJECT
Q_PROPERTY(qint64 duration READ duration NOTIFY durationChanged)
Q_ENUMS(State)
Q_ENUMS(CaptureMode)
Q_INTERFACES(QGstreamerBusMessageFilter)
public:
enum CaptureMode { Audio = 1, Video = 2, Image=4, AudioAndVideo = Audio | Video };
enum State { StoppedState, PreviewState, PausedState, RecordingState };
QGstreamerCaptureSession(CaptureMode captureMode, QObject *parent);
~QGstreamerCaptureSession();
QGstreamerBusHelper *bus() { return m_busHelper; }
CaptureMode captureMode() const { return m_captureMode; }
void setCaptureMode(CaptureMode);
QUrl outputLocation() const;
bool setOutputLocation(const QUrl& sink);
QGstreamerAudioEncode *audioEncodeControl() const { return m_audioEncodeControl; }
QGstreamerVideoEncode *videoEncodeControl() const { return m_videoEncodeControl; }
QGstreamerImageEncode *imageEncodeControl() const { return m_imageEncodeControl; }
QGstreamerRecorderControl *recorderControl() const { return m_recorderControl; }
QGstreamerMediaContainerControl *mediaContainerControl() const { return m_mediaContainerControl; }
QGstreamerElementFactory *audioInput() const { return m_audioInputFactory; }
void setAudioInput(QGstreamerElementFactory *audioInput);
QGstreamerElementFactory *audioPreview() const { return m_audioPreviewFactory; }
void setAudioPreview(QGstreamerElementFactory *audioPreview);
QGstreamerVideoInput *videoInput() const { return m_videoInputFactory; }
void setVideoInput(QGstreamerVideoInput *videoInput);
QObject *videoPreview() const { return m_viewfinder; }
void setVideoPreview(QObject *viewfinder);
void captureImage(int requestId, const QString &fileName);
State state() const;
qint64 duration() const;
bool isMuted() const { return m_muted; }
bool isReady() const;
bool processBusMessage(const QGstreamerMessage &message);
signals:
void stateChanged(QGstreamerCaptureSession::State state);
void durationChanged(qint64 duration);
void error(int error, const QString &errorString);
void imageExposed(int requestId);
void imageCaptured(int requestId, const QImage &img);
void imageSaved(int requestId, const QString &path);
void mutedChanged(bool);
void readyChanged(bool);
void viewfinderChanged();
public slots:
void setState(QGstreamerCaptureSession::State);
void setCaptureDevice(const QString &deviceName);
void dumpGraph(const QString &fileName);
void setMetaData(const QMap<QByteArray, QVariant>&);
void setMuted(bool);
private:
enum PipelineMode { EmptyPipeline, PreviewPipeline, RecordingPipeline, PreviewAndRecordingPipeline };
GstElement *buildEncodeBin();
GstElement *buildAudioSrc();
GstElement *buildAudioPreview();
GstElement *buildVideoSrc();
GstElement *buildVideoPreview();
GstElement *buildImageCapture();
void waitForStopped();
bool rebuildGraph(QGstreamerCaptureSession::PipelineMode newMode);
QUrl m_sink;
QString m_captureDevice;
State m_state;
State m_pendingState;
bool m_waitingForEos;
PipelineMode m_pipelineMode;
QGstreamerCaptureSession::CaptureMode m_captureMode;
QMap<QByteArray, QVariant> m_metaData;
QGstreamerElementFactory *m_audioInputFactory;
QGstreamerElementFactory *m_audioPreviewFactory;
QGstreamerVideoInput *m_videoInputFactory;
QObject *m_viewfinder;
QGstreamerVideoRendererInterface *m_viewfinderInterface;
QGstreamerAudioEncode *m_audioEncodeControl;
QGstreamerVideoEncode *m_videoEncodeControl;
QGstreamerImageEncode *m_imageEncodeControl;
QGstreamerRecorderControl *m_recorderControl;
QGstreamerMediaContainerControl *m_mediaContainerControl;
QGstreamerBusHelper *m_busHelper;
GstBus* m_bus;
GstElement *m_pipeline;
GstElement *m_audioSrc;
GstElement *m_audioTee;
GstElement *m_audioPreviewQueue;
GstElement *m_audioPreview;
GstElement *m_audioVolume;
bool m_muted;
GstElement *m_videoSrc;
GstElement *m_videoTee;
GstElement *m_videoPreviewQueue;
GstElement *m_videoPreview;
GstElement *m_imageCaptureBin;
GstElement *m_encodeBin;
public:
bool m_passImage;
bool m_passPrerollImage;
QString m_imageFileName;
int m_imageRequestId;
};
QT_END_NAMESPACE
#endif // QGSTREAMERCAPTURESESSION_H
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