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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 QWINDOWSCAMERAREADER_H
#define QWINDOWSCAMERAREADER_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.
//
#include <mfapi.h>
#include <mfidl.h>
#include <Mfreadwrite.h>
#include <QtCore/qobject.h>
#include <QtCore/qmutex.h>
#include <QtCore/qsemaphore.h>
#include <qvideoframe.h>
QT_BEGIN_NAMESPACE
class QVideoSink;
class QWindowsCameraReader : public QObject,
public IMFSourceReaderCallback,
public IMFSinkWriterCallback
{
Q_OBJECT
public:
explicit QWindowsCameraReader(QObject *parent = nullptr);
~QWindowsCameraReader();
QVideoSink *surface() const;
void setSurface(QVideoSink *surface);
//from IUnknown
STDMETHODIMP QueryInterface(REFIID riid, LPVOID *ppvObject);
STDMETHODIMP_(ULONG) AddRef(void);
STDMETHODIMP_(ULONG) Release(void);
//from IMFSourceReaderCallback
STDMETHODIMP OnReadSample(HRESULT hrStatus, DWORD dwStreamIndex,
DWORD dwStreamFlags, LONGLONG llTimestamp, IMFSample *pSample);
STDMETHODIMP OnFlush(DWORD dwStreamIndex);
STDMETHODIMP OnEvent(DWORD dwStreamIndex, IMFMediaEvent *pEvent);
//from IMFSinkWriterCallback
STDMETHODIMP OnFinalize(HRESULT hrStatus);
STDMETHODIMP OnMarker(DWORD dwStreamIndex, LPVOID pvContext);
bool activate(const QString &cameraId);
void deactivate();
bool startRecording(const QString &fileName, const GUID &container,
const GUID &videoFormat, UINT32 bitRate, UINT32 width,
UINT32 height, qreal frameRate);
void stopRecording();
bool pauseRecording();
bool resumeRecording();
UINT32 frameWidth() const;
UINT32 frameHeight() const;
qreal frameRate() const;
Q_SIGNALS:
void streamingStarted();
void streamingStopped();
void recordingStarted();
void recordingStopped();
void durationChanged(qint64 duration);
private:
void stopStreaming();
long m_cRef = 1;
QMutex m_mutex;
QSemaphore m_finalizeSemaphore;
IMFMediaSource *m_source = nullptr;
IMFSourceReader *m_sourceReader = nullptr;
IMFMediaType *m_sourceMediaType = nullptr;
IMFSinkWriter *m_sinkWriter = nullptr;
DWORD m_videoStreamIndex = 0;
QVideoSink *m_surface = nullptr;
UINT32 m_frameWidth = 0;
UINT32 m_frameHeight = 0;
qreal m_frameRate = 0.0;
LONG m_stride = 0;
bool m_active = false;
bool m_streaming = false;
bool m_recording = false;
bool m_firstFrame = false;
bool m_paused = false;
bool m_pauseChanging = false;
QVideoFrameFormat::PixelFormat m_pixelFormat = QVideoFrameFormat::Format_Invalid;
LONGLONG m_timeOffset = 0;
LONGLONG m_pauseTime = 0;
};
QT_END_NAMESPACE
#endif//QWINDOWSCAMERAREADER_H
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