Method getPixelValues

YUViewLib/src/video/FrameHandler.cpp:448–491

}

QStringPairList
FrameHandler::getPixelValues(const QPoint &pixelPos, int, FrameHandler *item2, const int)
{
  auto width  = (item2) ? std::min(frameSize.width, item2->frameSize.width) : frameSize.width;
  auto height = (item2) ? std::min(frameSize.height, item2->frameSize.height) : frameSize.height;

  if (pixelPos.x() < 0 || pixelPos.x() >= int(width) || pixelPos.y() < 0 ||
      pixelPos.y() >= int(height))
    return {};

  // Is the format (of both items) valid?
  if (!isFormatValid())
    return {};
  if (item2 && !item2->isFormatValid())
    return {};

  // Get the RGB values from the image
  QStringPairList values;

  if (item2)
  {
    // There is a second item. Return the difference values.
    auto pixel1 = getPixelVal(pixelPos);
    auto pixel2 = item2->getPixelVal(pixelPos);

    int r = int(qRed(pixel1)) - int(qRed(pixel2));
    int g = int(qGreen(pixel1)) - int(qGreen(pixel2));
    int b = int(qBlue(pixel1)) - int(qBlue(pixel2));

    values.append(QStringPair("R", QString::number(r)));
    values.append(QStringPair("G", QString::number(g)));
    values.append(QStringPair("B", QString::number(b)));
  }
  else
  {
    // No second item. Return the RGB values of this item.
    auto val = getPixelVal(pixelPos);
    values.append(QStringPair("R", QString::number(qRed(val))));
    values.append(QStringPair("G", QString::number(qGreen(val))));
    values.append(QStringPair("B", QString::number(qBlue(val))));
  }

  return values;
}

bool FrameHandler::setFormatFromString(QString format)
{