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#ifndef QGSTXVIMAGEBUFFER_H

#define QGSTXVIMAGEBUFFER_H

#include <QtMultimedia/qabstractvideobuffer.h>

#include <QtMultimedia/qvideosurfaceformat.h>

#include <QtCore/qmutex.h>

#include <QtCore/qwaitcondition.h>

#include <QtCore/qqueue.h>

#include <X11/Xlib.h>

#include <sys/ipc.h>

#include <sys/shm.h>

#include <X11/extensions/XShm.h>

#include <X11/Xlib.h>

#include <X11/extensions/Xv.h>

#include <X11/extensions/Xvlib.h>

#include <gst/gst.h>

class QGstXvImageBufferPool;

struct QGstXvImageBuffer {

    GstBuffer buffer;

    QGstXvImageBufferPool *pool;

    XvImage *xvImage;

    XShmSegmentInfo shmInfo;

    bool markedForDeletion;

    static GType get_type(void);

    static void class_init(gpointer g_class, gpointer class_data);

    static void buffer_init(QGstXvImageBuffer *xvimage, gpointer g_class);

    static void buffer_finalize(QGstXvImageBuffer * xvimage);

    static GstBufferClass *parent_class;

};

const QAbstractVideoBuffer::HandleType XvHandleType = QAbstractVideoBuffer::HandleType(4);

Q_DECLARE_METATYPE(XvImage*)

class QGstXvImageBufferPool : public QObject {

Q_OBJECT

friend class QGstXvImageBuffer;

public:

    QGstXvImageBufferPool(QObject *parent = 0);

    virtual ~QGstXvImageBufferPool();

    bool isFormatSupported(const QVideoSurfaceFormat &format);

    QGstXvImageBuffer *takeBuffer(const QVideoSurfaceFormat &format, GstCaps *caps);

    void clear();

private slots:

    void queuedAlloc();

    void queuedDestroy();

    void doClear();

    void recycleBuffer(QGstXvImageBuffer *);

    void destroyBuffer(QGstXvImageBuffer *);

private:

    struct XvShmImage {

        XvImage *xvImage;

        XShmSegmentInfo shmInfo;

    };

    QMutex m_poolMutex;

    QMutex m_allocMutex;

    QWaitCondition m_allocWaitCondition;

    QMutex m_destroyMutex;

    QVideoSurfaceFormat m_format;

    GstCaps *m_caps;

    QList<QGstXvImageBuffer*> m_pool;

    QList<QGstXvImageBuffer*> m_allBuffers;

    QList<XvShmImage> m_imagesToDestroy;

};

#endif