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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 AVFCAMERASESSION_H
#define AVFCAMERASESSION_H
#include <QtCore/qmutex.h>
#include <QtMultimedia/qcamera.h>
#include <QVideoFrame>
#import <AVFoundation/AVFoundation.h>
@class AVFCameraSessionObserver;
QT_BEGIN_NAMESPACE
class AVFCameraControl;
class AVFCameraService;
class AVFCameraRendererControl;
class AVFMediaVideoProbeControl;
struct AVFCameraInfo
{
AVFCameraInfo() : position(QCamera::UnspecifiedPosition), orientation(0)
{ }
QByteArray deviceId;
QString description;
QCamera::Position position;
int orientation;
};
class AVFCameraSession : public QObject
{
Q_OBJECT
public:
AVFCameraSession(AVFCameraService *service, QObject *parent = 0);
~AVFCameraSession();
static int defaultCameraIndex();
static const QList<AVFCameraInfo> &availableCameraDevices();
static AVFCameraInfo cameraDeviceInfo(const QByteArray &device);
AVFCameraInfo activeCameraInfo() const { return m_activeCameraInfo; }
void setVideoOutput(AVFCameraRendererControl *output);
AVCaptureSession *captureSession() const { return m_captureSession; }
AVCaptureDevice *videoCaptureDevice() const;
QCamera::State state() const;
QCamera::State requestedState() const { return m_state; }
bool isActive() const { return m_active; }
void addProbe(AVFMediaVideoProbeControl *probe);
void removeProbe(AVFMediaVideoProbeControl *probe);
FourCharCode defaultCodec();
AVCaptureDeviceInput *videoInput() const {return m_videoInput;}
public Q_SLOTS:
void setState(QCamera::State state);
void processRuntimeError();
void processSessionStarted();
void processSessionStopped();
void onCameraFrameFetched(const QVideoFrame &frame);
Q_SIGNALS:
void readyToConfigureConnections();
void stateChanged(QCamera::State newState);
void activeChanged(bool);
void newViewfinderFrame(const QVideoFrame &frame);
void error(int error, const QString &errorString);
private:
static void updateCameraDevices();
void attachVideoInputDevice();
bool applyImageEncoderSettings();
bool applyViewfinderSettings();
static int m_defaultCameraIndex;
static QList<AVFCameraInfo> m_cameraDevices;
AVFCameraInfo m_activeCameraInfo;
AVFCameraService *m_service;
AVFCameraRendererControl *m_videoOutput;
QCamera::State m_state;
bool m_active;
AVCaptureSession *m_captureSession;
AVCaptureDeviceInput *m_videoInput;
AVFCameraSessionObserver *m_observer;
QSet<AVFMediaVideoProbeControl *> m_videoProbes;
QMutex m_videoProbesMutex;
FourCharCode m_defaultCodec;
};
QT_END_NAMESPACE
#endif
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