[Interest] QtConcurrent::run with lambdas

[Jason H]

I wish to achieve the following scenario in a QAbstractVideoSurface derived class called FrameHandler:
class FrameInfo {
public:
	unsigned int frameNumber;
	std::function<void(const FrameInfo &info)> frameFunction; // not sure this is right
	QImage image;
};

class FrameHandler: public QAbstractVideoSurface {
	std::function<void(const FrameInfo &info)> frameFunction;
	FrameInfo *_currentFrameInfo;
        FrameHandler(std::function<void(const FrameInfo &info)> func, QObject *parent = NULL);
...
};

bool FrameHandler::present(const QVideoFrame &frame) {


	frameInfo = new FrameInfo;
	frameInfo->frameFunction = frameFunction;
	frameInfo->frameNumber = frameCount;

	if (frame.pixelFormat() == QVideoFrame::Format_ARGB32) {
		QVideoFrame	frame2 = frame;
		QSize size = frame2.size();
		int bytes = frame.size().width() * frame.size().height() * 4; // 4=ARGB

		frameInfo->image = QImage(size, QImage::Format_ARGB32);
		frame2.map(QAbstractVideoBuffer::ReadOnly);
		memcpy(_currentFrameInfo->image.bits(), frame2.bits(), bytes); // takes about 1280x720 takes ~750 usec on a MBP
		frame2.unmap();

		QFuture<void> future = QtConcurrent::run(frameFunction, frameInfo); // I can't find any way to pass these to work
//		QFuture<void> future = QtConcurrent::run(frameInfo, &FrameInfo::frameFunction); 
//		QFuture<void> future = QtConcurrent::run(frameFunction, frameInfo);
		QFuture<void> future = QtConcurrent::run(frameFunction, frameInfo);     
	}
}


// else where in the application (main.cpp) I'd like to do
FrameHandler saver([] {
        QString filename = QString("test_%1.png").arg(info.frameNumber);
        info.image(filename); // will run on another core because of QtConcurrent::run(), takes about 600ms due to PNG compression
});


How can I do this?