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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/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 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef AVFCAMERASESSION_H
#define AVFCAMERASESSION_H

#include <QtCore/qmutex.h>
#include <QtMultimedia/qcamera.h>

#import <AVFoundation/AVFoundation.h>

@class AVFCameraSessionObserver;

QT_BEGIN_NAMESPACE

class AVFCameraControl;
class AVFCameraService;
class AVFVideoRendererControl;

class AVFCameraSession : public QObject
{
    Q_OBJECT
public:
    AVFCameraSession(AVFCameraService *service, QObject *parent = 0);
    ~AVFCameraSession();

    void setVideoOutput(AVFVideoRendererControl *output);
    AVCaptureSession *captureSession() const { return m_captureSession; }

    QCamera::State state() const;
    QCamera::State requestedState() const { return m_state; }
    bool isActive() const { return m_active; }

public Q_SLOTS:
    void setState(QCamera::State state);

    void processRuntimeError();
    void processSessionStarted();
    void processSessionStopped();

Q_SIGNALS:
    void readyToConfigureConnections();
    void stateChanged(QCamera::State newState);
    void activeChanged(bool);
    void error(int error, const QString &errorString);

private:
    void attachInputDevices();

    AVFCameraService *m_service;
    AVFVideoRendererControl *m_videoOutput;

    QCamera::State m_state;
    bool m_active;

    AVCaptureSession *m_captureSession;
    AVCaptureDeviceInput *m_videoInput;
    AVCaptureDeviceInput *m_audioInput;
    AVFCameraSessionObserver *m_observer;
};

QT_END_NAMESPACE

#endif