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Diffstat (limited to 'examples/videowidget/videowidgetsurface.cpp')
| -rw-r--r-- | examples/videowidget/videowidgetsurface.cpp | 176 |
1 files changed, 0 insertions, 176 deletions
diff --git a/examples/videowidget/videowidgetsurface.cpp b/examples/videowidget/videowidgetsurface.cpp deleted file mode 100644 index a0b71bf..0000000 --- a/examples/videowidget/videowidgetsurface.cpp +++ /dev/null @@ -1,176 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). -** All rights reserved. -** Contact: Nokia Corporation (qt-info@nokia.com) -** -** This file is part of the examples of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:BSD$ -** You may use this file under the terms of the BSD license as follows: -** -** "Redistribution and use in source and binary forms, with or without -** modification, are permitted provided that the following conditions are -** met: -** * Redistributions of source code must retain the above copyright -** notice, this list of conditions and the following disclaimer. -** * Redistributions in binary form must reproduce the above copyright -** notice, this list of conditions and the following disclaimer in -** the documentation and/or other materials provided with the -** distribution. -** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor -** the names of its contributors may be used to endorse or promote -** products derived from this software without specific prior written -** permission. -** -** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "videowidgetsurface.h" - -#include <QtWidgets> -#include <qabstractvideosurface.h> -#include <qvideosurfaceformat.h> - -VideoWidgetSurface::VideoWidgetSurface(QWidget *widget, QObject *parent) - : QAbstractVideoSurface(parent) - , widget(widget) - , imageFormat(QImage::Format_Invalid) -{ -} - -//! [0] -QList<QVideoFrame::PixelFormat> VideoWidgetSurface::supportedPixelFormats( - QAbstractVideoBuffer::HandleType handleType) const -{ - if (handleType == QAbstractVideoBuffer::NoHandle) { - return QList<QVideoFrame::PixelFormat>() - << QVideoFrame::Format_RGB32 - << QVideoFrame::Format_ARGB32 - << QVideoFrame::Format_ARGB32_Premultiplied - << QVideoFrame::Format_RGB565 - << QVideoFrame::Format_RGB555; - } else { - return QList<QVideoFrame::PixelFormat>(); - } -} -//! [0] - -//! [1] -bool VideoWidgetSurface::isFormatSupported( - const QVideoSurfaceFormat &format, QVideoSurfaceFormat *similar) const -{ - Q_UNUSED(similar); - - const QImage::Format imageFormat = QVideoFrame::imageFormatFromPixelFormat(format.pixelFormat()); - const QSize size = format.frameSize(); - - return imageFormat != QImage::Format_Invalid - && !size.isEmpty() - && format.handleType() == QAbstractVideoBuffer::NoHandle; -} -//! [1] - -//! [2] -bool VideoWidgetSurface::start(const QVideoSurfaceFormat &format) -{ - const QImage::Format imageFormat = QVideoFrame::imageFormatFromPixelFormat(format.pixelFormat()); - const QSize size = format.frameSize(); - - if (imageFormat != QImage::Format_Invalid && !size.isEmpty()) { - this->imageFormat = imageFormat; - imageSize = size; - sourceRect = format.viewport(); - - QAbstractVideoSurface::start(format); - - widget->updateGeometry(); - updateVideoRect(); - - return true; - } else { - return false; - } -} -//! [2] - -//! [3] -void VideoWidgetSurface::stop() -{ - currentFrame = QVideoFrame(); - targetRect = QRect(); - - QAbstractVideoSurface::stop(); - - widget->update(); -} -//! [3] - -//! [4] -bool VideoWidgetSurface::present(const QVideoFrame &frame) -{ - if (surfaceFormat().pixelFormat() != frame.pixelFormat() - || surfaceFormat().frameSize() != frame.size()) { - setError(IncorrectFormatError); - stop(); - - return false; - } else { - currentFrame = frame; - - widget->repaint(targetRect); - - return true; - } -} -//! [4] - -//! [5] -void VideoWidgetSurface::updateVideoRect() -{ - QSize size = surfaceFormat().sizeHint(); - size.scale(widget->size().boundedTo(size), Qt::KeepAspectRatio); - - targetRect = QRect(QPoint(0, 0), size); - targetRect.moveCenter(widget->rect().center()); -} -//! [5] - -//! [6] -void VideoWidgetSurface::paint(QPainter *painter) -{ - if (currentFrame.map(QAbstractVideoBuffer::ReadOnly)) { - const QTransform oldTransform = painter->transform(); - - if (surfaceFormat().scanLineDirection() == QVideoSurfaceFormat::BottomToTop) { - painter->scale(1, -1); - painter->translate(0, -widget->height()); - } - - QImage image( - currentFrame.bits(), - currentFrame.width(), - currentFrame.height(), - currentFrame.bytesPerLine(), - imageFormat); - - painter->drawImage(targetRect, image, sourceRect); - - painter->setTransform(oldTransform); - - currentFrame.unmap(); - } -} -//! [6] |