Initial copy of QtMultimediaKit.

Comes from original repo, with SHA1:
2c82d5611655e5967f5c5095af50c0991c4378b2

src/plugins/gstreamer/mediaplayer/qgstreamerplayercontrol.h

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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 Mobility Components.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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 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.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef QGSTREAMERPLAYERCONTROL_H
+#define QGSTREAMERPLAYERCONTROL_H
+
+#include <QtCore/qobject.h>
+#include <QtCore/qstack.h>
+
+#include <qmediaplayercontrol.h>
+#include <qmediaplayer.h>
+
+#include <limits.h>
+
+QT_BEGIN_NAMESPACE
+class QMediaPlaylist;
+class QMediaPlaylistNavigator;
+class QSocketNotifier;
+QT_END_NAMESPACE
+
+QT_USE_NAMESPACE
+
+class QGstreamerPlayerSession;
+class QGstreamerPlayerService;
+class PlayerResourcePolicy;
+
+class QGstreamerPlayerControl : public QMediaPlayerControl
+{
+    Q_OBJECT
+    Q_PROPERTY(bool mediaDownloadEnabled READ isMediaDownloadEnabled WRITE setMediaDownloadEnabled)
+
+public:
+    QGstreamerPlayerControl(QGstreamerPlayerSession *session, QObject *parent = 0);
+    ~QGstreamerPlayerControl();
+
+    QMediaPlayer::State state() const;
+    QMediaPlayer::MediaStatus mediaStatus() const;
+
+    qint64 position() const;
+    qint64 duration() const;
+
+    int bufferStatus() const;
+
+    int volume() const;
+    bool isMuted() const;
+
+    bool isAudioAvailable() const;
+    bool isVideoAvailable() const;
+    void setVideoOutput(QObject *output);
+
+    bool isSeekable() const;
+    QMediaTimeRange availablePlaybackRanges() const;
+
+    qreal playbackRate() const;
+    void setPlaybackRate(qreal rate);
+
+    QMediaContent media() const;
+    const QIODevice *mediaStream() const;
+    void setMedia(const QMediaContent&, QIODevice *);
+
+    bool isMediaDownloadEnabled() const;
+    void setMediaDownloadEnabled(bool enabled);
+
+public Q_SLOTS:
+    void setPosition(qint64 pos);
+
+    void play();
+    void pause();
+    void stop();
+
+    void setVolume(int volume);
+    void setMuted(bool muted);
+
+private Q_SLOTS:
+    void writeFifo();
+    void fifoReadyWrite(int socket);
+
+    void updateSessionState(QMediaPlayer::State state);
+    void updateMediaStatus();
+    void processEOS();
+    void setBufferProgress(int progress);
+    void applyPendingSeek(bool isSeekable);
+
+    void handleInvalidMedia();
+
+    void handleResourcesGranted();
+    void handleResourcesLost();
+
+private:
+    bool openFifo();
+    void closeFifo();
+    void playOrPause(QMediaPlayer::State state);
+
+    void pushState();
+    void popAndNotifyState();
+
+    bool m_ownStream;
+    QGstreamerPlayerSession *m_session;
+    QMediaPlayer::State m_state;
+    QMediaPlayer::MediaStatus m_mediaStatus;
+    QStack<QMediaPlayer::State> m_stateStack;
+    QStack<QMediaPlayer::MediaStatus> m_mediaStatusStack;
+
+    int m_bufferProgress;
+    bool m_seekToStartPending;
+    qint64 m_pendingSeekPosition;
+    QMediaContent m_currentResource;
+    QIODevice *m_stream;
+    QSocketNotifier *m_fifoNotifier;
+    int m_fifoFd[2];
+    bool m_fifoCanWrite;
+    int m_bufferSize;
+    int m_bufferOffset;
+    char m_buffer[PIPE_BUF];
+
+    PlayerResourcePolicy *m_resources;
+};
+
+#endif