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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef DSCAMERASESSION_H
#define DSCAMERASESSION_H
#include <QtCore/qobject.h>
#include <QTime>
#include <QUrl>
#include <QMutex>
#include <qcamera.h>
#include <QtMultimedia/qvideoframe.h>
#include <QtMultimedia/qabstractvideosurface.h>
#include <QtMultimedia/qvideosurfaceformat.h>
#include <private/qmediastoragelocation_p.h>
#include <tchar.h>
#include <dshow.h>
#include <objbase.h>
#include <initguid.h>
#ifdef Q_CC_MSVC
# pragma comment(lib, "strmiids.lib")
# pragma comment(lib, "ole32.lib")
#endif // Q_CC_MSVC
#include <windows.h>
#ifdef Q_CC_MSVC
# pragma include_alias("dxtrans.h","qedit.h")
#endif // Q_CC_MSVC
#define __IDxtCompositor_INTERFACE_DEFINED__
#define __IDxtAlphaSetter_INTERFACE_DEFINED__
#define __IDxtJpeg_INTERFACE_DEFINED__
#define __IDxtKey_INTERFACE_DEFINED__
struct ICaptureGraphBuilder2;
struct ISampleGrabber;
QT_BEGIN_NAMESPACE
class SampleGrabberCallbackPrivate;
class DSCameraSession : public QObject
{
Q_OBJECT
public:
DSCameraSession(QObject *parent = 0);
~DSCameraSession();
QCamera::Status status() const { return m_status; }
void setDevice(const QString &device);
bool load();
bool unload();
bool startPreview();
bool stopPreview();
bool isReadyForCapture();
int captureImage(const QString &fileName);
void setSurface(QAbstractVideoSurface* surface);
Q_SIGNALS:
void statusChanged(QCamera::Status);
void imageExposed(int id);
void imageCaptured(int id, const QImage &preview);
void imageSaved(int id, const QString &fileName);
void readyForCaptureChanged(bool);
void captureError(int id, int error, const QString &errorString);
private Q_SLOTS:
void presentFrame();
void updateReadyForCapture();
private:
void setStatus(QCamera::Status status);
void populateCommonResolutions();
void onFrameAvailable(const char *frameData, long len);
void saveCapturedImage(int id, const QImage &image, const QString &path);
bool createFilterGraph();
bool connectGraph();
void disconnectGraph();
void updateSourceCapabilities();
bool configurePreviewFormat();
QMutex m_presentMutex;
QMutex m_captureMutex;
// Capture Graph
ICaptureGraphBuilder2* m_graphBuilder;
IGraphBuilder* m_filterGraph;
// Source (camera)
QString m_sourceDeviceName;
IBaseFilter* m_sourceFilter;
AM_MEDIA_TYPE m_sourcePreferredFormat;
QSize m_sourcePreferredResolution;
bool m_needsHorizontalMirroring;
// Preview
IBaseFilter *m_previewFilter;
ISampleGrabber *m_previewSampleGrabber;
IBaseFilter *m_nullRendererFilter;
QVideoFrame m_currentFrame;
bool m_previewStarted;
QAbstractVideoSurface* m_surface;
QVideoSurfaceFormat m_previewSurfaceFormat;
QVideoFrame::PixelFormat m_previewPixelFormat;
QSize m_previewSize;
// Image capture
QString m_imageCaptureFileName;
QMediaStorageLocation m_fileNameGenerator;
bool m_readyForCapture;
int m_imageIdCounter;
int m_currentImageId;
QVideoFrame m_capturedFrame;
// Internal state
QCamera::Status m_status;
friend class SampleGrabberCallbackPrivate;
};
QT_END_NAMESPACE
#endif
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