Install custom AnimationDriver

mediafx/animation.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include <QAnimationDriver>
+
+class AnimationDriver : public QAnimationDriver {
+public:
+    AnimationDriver(qint64 frameDuration, QObject* parent = nullptr)
+        : QAnimationDriver(parent)
+        , m_frameDuration(frameDuration)
+    {
+    }
+
+    void advance() override
+    {
+        m_elapsed += m_frameDuration;
+        advanceAnimation();
+    }
+
+    qint64 elapsed() const override
+    {
+        return m_elapsed;
+    }
+
+private:
+    qint64 m_frameDuration;
+    qint64 m_elapsed = 0;
+};

mediafx/session.cpp

@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "session.h"
+#include "animation.h"
 #include "mediafx.h"
 #include <QByteArray>
 #include <QCoreApplication>
@@ -26,9 +27,12 @@ Session::Session(QSize& size, qint64 frameDuration)
     , m_frameDuration(frameDuration)
     , frameTime(0, frameDuration)
     , quickView(QUrl(), &renderControl)
+    , animationDriver(new AnimationDriver(frameDuration, this))
 {
     connect(this, &Session::exitApp, qApp, &QCoreApplication::exit, Qt::QueuedConnection);
 
+    animationDriver->install();
+
     MediaFXForeign::s_singletonInstance = new MediaFX(this, this);
 
     quickView.setResizeMode(QQuickView::ResizeMode::SizeRootObjectToView);
@@ -95,6 +99,7 @@ void Session::render()
         }
         /**** XXX ****/
 
+        animationDriver->advance();
         frameTime = frameTime.translated(frameDuration());
     }
 

mediafx/session.h

@@ -15,6 +15,7 @@ class MediaFX;
 class QQmlError;
 class QSize;
 class QUrl;
+class AnimationDriver;
 
 class Session : public QObject {
     Q_OBJECT
@@ -43,4 +44,5 @@ private slots:
     RenderControl renderControl;
     QQuickView quickView;
     MediaFX* mediaFX;
+    AnimationDriver* animationDriver;
 };