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#ifndef QGSTBUFFERPOOL_H
#define QGSTBUFFERPOOL_H

#include <qabstractvideobuffer.h>
#include <qvideosurfaceformat.h>

#include <gst/gst.h>

/*!
    Abstract interface for video buffers allocation.
*/
class QAbstractGstBufferPool
{
public:
    virtual ~QAbstractGstBufferPool() {}

    virtual bool isFormatSupported(const QVideoSurfaceFormat &format) const = 0;

    virtual GType bufferType() const = 0;
    virtual GstBuffer *takeBuffer(const QVideoSurfaceFormat &format, GstCaps *caps) = 0;
    virtual void clear() = 0;

    virtual QAbstractVideoBuffer::HandleType handleType() const = 0;

    /*!
      Build an QAbstractVideoBuffer instance from compatible (mathcing gst buffer type)
      GstBuffer.

      This method is called from gstreamer video sink thread.
     */
    virtual QAbstractVideoBuffer *prepareVideoBuffer(GstBuffer *buffer, int bytesPerLine) = 0;
};

#endif
