qv4l2filedescriptor_p.h

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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QV4L2FILEDESCRIPTOR_P_H
#define QV4L2FILEDESCRIPTOR_P_H
 
#include <QtMultimedia/private/qtmultimediaglobal_p.h>
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
QT_BEGIN_NAMESPACE
 
int xioctl(int fd, int request, void *arg);
 
class QV4L2FileDescriptor
{
public:
    QV4L2FileDescriptor(int descriptor);
 
    ~QV4L2FileDescriptor();
 
    bool call(int request, void *arg) const;
 
    int get() const { return m_descriptor; }
 
    bool requestBuffers(quint32 memoryType, quint32 &buffersCount) const;
 
    bool startStream();
 
    bool stopStream();
 
    bool streamStarted() const { return m_streamStarted; }
 
private:
    int m_descriptor;
    bool m_streamStarted = false;
};
 
QT_END_NAMESPACE
 
#endif // QV4L2FILEDESCRIPTOR_P_H