File indexing completed on 2024-05-19 04:29:18

 /* This file is part of the KDE project
    SPDX-FileCopyrightText: 2022 Emmet O'Neill <emmetoneill.pdx@gmail.com>
    SPDX-FileCopyrightText: 2022 Eoin O'Neill <eoinoneill1991@gmail.com>
 
    SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 #ifndef KISPLAYBACKENGINEQT_H
 #define KISPLAYBACKENGINEQT_H
 
 #include "KisPlaybackEngine.h"
 
 #include <kritaui_export.h>
 
 
 #include "canvas/KisCanvasAnimationState.h"
 #include <boost/optional.hpp>
 
 #include <QElapsedTimer>
 
 /**
  * @brief The KisPlaybackEngineQT class is an implementation of KisPlaybackEngine
  * that drives animation playback using simple Qt functionality alone.
  *
  * As of right now, this playback engine is used as a fallback for when KisPlaybackEngineMLT is unavailable,
  * invalid, or otherwise unwanted.
  */
 class KRITAUI_EXPORT KisPlaybackEngineQT : public KisPlaybackEngine
 {
     Q_OBJECT
 
 public:
     explicit KisPlaybackEngineQT(QObject *parent = nullptr);
     ~KisPlaybackEngineQT();
 
     void seek(int frameIndex, SeekOptionFlags flags = SEEK_FINALIZE | SEEK_PUSH_AUDIO) override;
 
     void setMute(bool) override {}
     bool isMute() override { return true; }
 
     bool supportsAudio() override {return false;}
     bool supportsVariablePlaybackSpeed() override { return true; }
 
     void setDropFramesMode(bool value) override;
 
     boost::optional<int64_t> activeFramesPerSecond() const;
 
     PlaybackStats playbackStatistics() const override;
 
 protected Q_SLOTS:
     /**
      * @brief throttledDriverCallback handles signals from the internal driver
      * that drives playback within this engine. It will either increment frame time,
      * wrapping within bounds, and communicate with KisFrameDisplayProxy or use the
      * driver's desired time to control which frame is visible...
      */
     void throttledDriverCallback();
 
 
 protected:
     void setCanvas(KoCanvasBase* canvas) override;
     void unsetCanvas() override;
 
 private:
     struct Private;
     QScopedPointer<Private> m_d;
 };
 
 #endif // KISPLAYBACKENGINEQT_H