bool QPainterRenderer::preparePixmap(const VideoFrame &frame)
{
DPTR_D(QPainterRenderer);
// already locked in a larger scope of receive()
QImage::Format imgfmt = frame.imageFormat();
if (frame.constBits(0)) {
d.video_frame = frame;
} else {
if (imgfmt == QImage::Format_Invalid) {
d.video_frame = frame.to(VideoFormat::Format_RGB32);
imgfmt = d.video_frame.imageFormat();
} else {
d.video_frame = frame.to(frame.pixelFormat());
}
}
const bool swapRGB = (int)imgfmt < 0;
if (swapRGB) {
imgfmt = (QImage::Format)(-imgfmt);
}
// DO NOT use frameData().data() because it's temp ptr while d.image does not deep copy the data
QImage image = QImage((uchar*)d.video_frame.constBits(), d.video_frame.width(), d.video_frame.height(), d.video_frame.bytesPerLine(), imgfmt);
if (swapRGB)
image = image.rgbSwapped();
d.pixmap = QPixmap::fromImage(image);
//Format_RGB32 is fast. see document
return true;
}
void VideoCaptureNode::inputsUpdated( qint64 pTimeStamp )
{
NodeControlBase::inputsUpdated( pTimeStamp );
// if( !mNode->context()->active() )
// {
// return;
// }
if( mDevice && mDevice->timestamp() > mLastFrameTimeStamp )
{
fugio::Performance P( mNode, __FUNCTION__, pTimeStamp );
fugio::Image Output = mValOutputImage->variant().value<fugio::Image>();
for( int i = 0 ; i < 3 ; i++ )
{
Output.setBuffer( i, nullptr );
}
VideoFrame VF = mDevice->frame();
if( VF.width() != mVideoFrame.width() || VF.height() != mVideoFrame.height() || VF.pixelFormat() != mVideoFrame.pixelFormat() )
{
Output.setSize( VF.width(), VF.height() );
#if defined( VIDEOCAPTURE_SUPPORTED )
switch( VF.pixelFormat() )
{
case CA_YUV422P: /* YUV422 Planar */
case CA_YUVJ420P: /* YUV420 Planar Full Range (JPEG), J comes from the JPEG. (values 0-255 used) */
case CA_YUVJ420BP: /* YUV420 Bi-Planer Full Range (JPEG), J comes fro the JPEG. (values: luma = [16,235], chroma=[16,240]) */
case CA_JPEG_OPENDML: /* JPEG with Open-DML extensions */
case CA_H264: /* H264 */
return;
case CA_YUV420BP: /* YUV420 Bi Planar */
Output.setFormat( fugio::ImageFormat::NV12 );
break;
case CA_MJPEG: /* MJPEG 2*/
Output.setFormat( fugio::ImageFormat::YUVJ422P );
break;
case CA_YUV420P: /* YUV420 Planar */
Output.setFormat( fugio::ImageFormat::YUV420P );
break;
case CA_UYVY422: /* Cb Y0 Cr Y1 */
Output.setFormat( fugio::ImageFormat::UYVY422 );
break;
case CA_YUYV422: /* Y0 Cb Y1 Cr */
Output.setFormat( fugio::ImageFormat::YUYV422 );
break;
case CA_ARGB32: /* ARGB 8:8:8:8 32bpp, ARGBARGBARGB... */
case CA_RGBA32: /* RGBA 8:8:8:8 32bpp. */
Output.setFormat( fugio::ImageFormat::RGBA8 );
break;
case CA_BGRA32: /* BGRA 8:8:8:8 32bpp, BGRABGRABGRA... */
Output.setFormat( fugio::ImageFormat::BGRA8 );
break;
case CA_RGB24: /* RGB 8:8:8 24bit */
#if defined( Q_OS_WIN )
Output.setFormat( fugio::ImageFormat::BGR8 );
#else
Output.setFormat( fugio::ImageFormat::RGB8 );
#endif
break;
}
#endif
for( int i = 0 ; i < 3 ; i++ )
{
Output.setLineSize( i, VF.stride( i ) );
}
}
if( Output.isValid() )
{
mVideoFrame = VF;
for( int i = 0 ; i < 3 ; i++ )
{
Output.setBuffer( i, mVideoFrame.plane( i ) );
}
pinUpdated( mPinOutputImage );
}
mLastFrameTimeStamp = mDevice->timestamp();
}
}
