Copyright (C) 2012, University of Cambridge, Department of Psychiatry.
Created by Rudolf Cardinal (firstname.lastname@example.org).
This file is part of CamCOPS.
CamCOPS is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
CamCOPS is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with CamCOPS. If not, see <https://www.gnu.org/licenses/>.
class CameraFrameGrabber : public QAbstractVideoSurface
// Class to use a video surface as a camera's viewfinder, and grab a frame
// from it.
explicit CameraFrameGrabber(QObject* parent = nullptr);
virtual QList<QVideoFrame::PixelFormat> supportedPixelFormats(
QAbstractVideoBuffer::HandleType handle_type) const override;
virtual bool present(const QVideoFrame& frame) override;
void frameAvailable(QImage image); // QImage is copy-on-write
// ... https://stackoverflow.com/questions/8455887/stack-object-qt-signal-and-parameter-as-reference/18146433