private void GetNewXY(ref double x, ref double y)
{
IMFormat pFormat = m_objMixer;
M_VID_PROPS vProps;
int nIndex;
string strNmae;
pFormat.FormatVideoGet(eMFormatType.eMFT_Output, out vProps, out nIndex, out strNmae);
double videoAspectRatio = (double)vProps.nAspectX / (double)vProps.nAspectY;
if (vProps.nAspectX == 0 && vProps.nAspectY == 0)
{
videoAspectRatio = (double)vProps.nWidth / (double)vProps.nHeight;
}
double previewAspectRatio = (double)panelPreview.Width / (double)panelPreview.Height;
double kX = 0;
double kY = 0;
if (videoAspectRatio < previewAspectRatio)
{
kX = (videoAspectRatio * (double)panelPreview.Height) / (double)panelPreview.Width;
x = (x - 0.5) / kX + 0.5;
}
else
{
kY = (double)panelPreview.Width / (videoAspectRatio * (double)panelPreview.Height);
y = (y - 0.5) / kY + 0.5;
}
}
private void OnMFormatObjectChanged(IMFormat oldValue, IMFormat newValue)
{
this.InitDownStream();
UpdateItems();
}