/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef DIRECTSHOWSAMPLEGRABBER_H
#define DIRECTSHOWSAMPLEGRABBER_H

#include <QtCore/qglobal.h>
#include <QtCore/qobject.h>

// TODO: Fix this.
#include <directshowcameraglobal.h>

QT_BEGIN_NAMESPACE

class SampleGrabberCallbackPrivate;

class DirectShowSampleGrabber : public QObject
{
    Q_OBJECT
public:
    DirectShowSampleGrabber(QObject *p = nullptr);
    ~DirectShowSampleGrabber();

    // 0 = ISampleGrabberCB::SampleCB, 1 = ISampleGrabberCB::BufferCB
    enum class CallbackMethod : long
    {
        SampleCB,
        BufferCB
    };

    bool isValid() const { return m_filter && m_sampleGrabber; }
    bool getConnectedMediaType(AM_MEDIA_TYPE *mediaType);
    bool setMediaType(const AM_MEDIA_TYPE *mediaType);

    void stop();
    void start(CallbackMethod method, bool oneShot = false, bool bufferSamples = false);

    IBaseFilter *filter() const { return m_filter; }

Q_SIGNALS:
    void sampleAvailable(double time, IMediaSample *sample);
    void bufferAvailable(double time, const QByteArray &data);

private:
    IBaseFilter *m_filter = nullptr;
    ISampleGrabber *m_sampleGrabber = nullptr;
    SampleGrabberCallbackPrivate *m_sampleGabberCb = nullptr;
    CallbackMethod m_callbackType= CallbackMethod::BufferCB;
};

QT_END_NAMESPACE

#endif // DIRECTSHOWSAMPLEGRABBER_H
