qbatchrenderer_p.h

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// Copyright (C) 2018 The Qt Company Ltd.

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

// Qt-Security score:significant reason:default

#ifndef QBATCHRENDERER_H

#define QBATCHRENDERER_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 <QHash>

#include <QThread>

#include <QMutex>

#include <QWaitCondition>

QT_BEGIN_NAMESPACE

class QLottieRoot;

class QImage;

class QLottieAnimation;

class QBatchRenderer : public QThread

    Q_OBJECT

    struct Entry

        QLottieAnimation* animator = nullptr;

        QLottieRoot *lottieTreeBlueprint = nullptr;

        int startFrame = 0;

        int endFrame = 0;

        int currentFrame = 0;

        int animDir = 1;

        QHash<int, QLottieRoot *> frameCache;

};

public:

    ~QBatchRenderer() override;

    QBatchRenderer(QBatchRenderer const &) = delete;

    void operator=(QBatchRenderer const&) = delete;

    static QBatchRenderer *instance();

    static void deleteInstance();

    QLottieRoot *getFrame(QLottieAnimation *animator, int frameNumber);

Q_SIGNALS:

    void frameReady(QLottieAnimation *animator, int frameNumber);

public Q_SLOTS:

    void registerAnimator(QLottieAnimation *animator);

    void deregisterAnimator(QLottieAnimation *animator);

    bool gotoFrame(QLottieAnimation *animator, int frame);

    void frameRendered(QLottieAnimation *animator, int frameNumber);

protected:

    void run() override;

    void prerender(Entry *animEntry);

private:

    QBatchRenderer();

    void pruneFrameCache(Entry* e);

private:

    static QBatchRenderer *m_rendererInstance;

    QMutex m_mutex;

    QWaitCondition m_waitCondition;

    int m_cacheSize = 2;

    QHash<QLottieAnimation *, Entry *> m_animData;

    int m_lastRenderedFrame = -1;

};

QT_END_NAMESPACE

#endif // QBATCHRENDERER_H