source: trunk/examples/multimedia/videowidget/videowidgetsurface.cpp@ 561

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#include "videowidgetsurface.h"

#include <QtMultimedia>

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]