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/*  Copyright (c) 2010-2013  hkrn                                    */
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#ifndef VPVM_SCENEPLAYER_H
#define VPVM_SCENEPLAYER_H

#include <vpvl2/Common.h>
#include <vpvl2/extensions/BaseTimeIndexHolder.h>
#include <vpvl2/extensions/FPSCounter.h>
#include <vpvl2/qt/RenderContext.h>

#include <QtCore/QElapsedTimer>
#include <QtCore/QTimer>
#include <QProgressDialog>

namespace vpvl2 {
namespace extensions {
class AudioSource;
}
class IModel;
}

namespace vpvm
{

using namespace vpvl2;
using namespace vpvl2::qt;
class AVFactory;
class SceneWidget;
class PlaySettingDialog;

class ScenePlayer : public QObject
{
    Q_OBJECT

public:
    ScenePlayer(SceneWidget *sceneWidget, const PlaySettingDialog *dialog, QObject *parent = 0);
    ~ScenePlayer();

    void start();
    bool isActive() const;

public slots:
    void stop();
    /* これを呼ぶと再生終了時 renderFrameDidStop ではなく renderFrameDidStopAndRestoreState が呼ばれる */
    void setRestoreState() { m_restoreState = true; }

protected:
    void timerEvent(QTimerEvent *event);

signals:
    void renderFrameDidStart();
    void renderFrameDidUpdate(const Scalar &delta);
    void renderFrameDidStop();
    void renderFrameDidStopAndRestoreState();
    /* motionDidSeek は int 型な点に注意 (他は float 型) */
    void motionDidSeek(int timeIndex);
    void playerDidPlay(const QString &title, bool cancellable);
    void playerDidUpdate(int value, int max, const QString &text);
    void playerDidUpdateTitle(const QString &title);
    void playerDidStop();

private slots:
    void cancel();

private:
    void renderScene(const IKeyframe::TimeIndex &timeIndex);
    class TimeIndexHolder : public BaseTimeIndexHolder {
    public:
        TimeIndexHolder()
            : BaseTimeIndexHolder()
        {
        }
        ~TimeIndexHolder() {
        }
    private:
        void timerStart() {
            m_timer.start();
        }
        void timerReset() {
            m_timer.restart();
        }
        int64_t timerElapsed() const {
            return m_timer.elapsed();
        }
        QElapsedTimer m_timer;
    };

    const PlaySettingDialog *m_dialogRef;
    QScopedPointer<AudioSource> m_audioSource;
    SceneWidget *m_sceneWidgetRef;
    IModelSharedPtr m_selectedModelRef;
    QBasicTimer m_updateTimer;
    QString m_format;
    QByteArray m_buffer;
    FPSCounter m_counter;
    TimeIndexHolder m_timeHolder;
    Scalar m_prevSceneFPS;
    qreal m_lastCurrentTimeIndex;
    bool m_restoreState;
    bool m_cancelled;
};

} /* namespace vpvm */

#endif // SCENEPLAYER_H
