本文整理汇总了C++中VideoFrame::convertTo方法的典型用法代码示例。如果您正苦于以下问题：C++ VideoFrame::convertTo方法的具体用法？C++ VideoFrame::convertTo怎么用？C++ VideoFrame::convertTo使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类VideoFrame的用法示例。
在下文中一共展示了VideoFrame::convertTo方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: initializeOnFrame
void QPainterFilterContext::initializeOnFrame(Frame *frame)
{
if (!frame) {
if (!painter) {
painter = new QPainter(); //warning: more than 1 painter on 1 device
}
if (!paint_device) {
paint_device = painter->device();
}
if (!paint_device && !painter->isActive()) {
qWarning("No paint device and painter is not active. No painting!");
return;
}
if (!painter->isActive())
painter->begin(paint_device);
return;
}
VideoFrame *vframe = static_cast<VideoFrame*>(frame);
VideoFormat format = vframe->format();
if (!format.isValid()) {
qWarning("Not a valid format");
return;
}
if (format.imageFormat() == QImage::Format_Invalid) {
format.setPixelFormat(VideoFormat::Format_RGB32);
vframe->convertTo(format);
}
if (paint_device) {
if (painter && painter->isActive()) {
painter->end(); //destroy a paint device that is being painted is not allowed!
}
delete paint_device;
paint_device = 0;
}
Q_ASSERT(video_width > 0 && video_height > 0);
// direct draw on frame data, so use VideoFrame::bits()
paint_device = new QImage((uchar*)vframe->bits(0), video_width, video_height, vframe->bytesPerLine(0), format.imageFormat());
if (!painter)
painter = new QPainter();
own_painter = true;
own_paint_device = true; //TODO: what about renderer is not a widget?
painter->begin((QImage*)paint_device);
}