public static Boolean TryMediaOpen(MediaTypes mediaType, String path)
{
Boolean ret = false;
switch (mediaType)
{
case MediaTypes.Audio:
{
DirectShowLib.IGraphBuilder gb = (DirectShowLib.IGraphBuilder) new DirectShowLib.FilterGraph();
//Int32 hr = gb.RenderFile(path, null);
if (gb.RenderFile(path, null) == 0)
{
ret = true;
}
Marshal.ReleaseComObject(gb);
gb = null;
break;
}
case MediaTypes.Video:
{
DirectShowLib.IGraphBuilder gb = (DirectShowLib.IGraphBuilder) new DirectShowLib.FilterGraph();
Int32 hr = gb.RenderFile(path, null);
if (hr == 0)
{
DirectShowLib.IVideoWindow videoWindow = (DirectShowLib.IVideoWindow)gb;
OABool lVisible;
if (videoWindow.get_Visible(out lVisible) == 0)
{
ret = true;
}
videoWindow = null;
}
Marshal.ReleaseComObject(gb);
gb = null;
break;
}
case MediaTypes.Karaoke:
{
ret = true;
try
{
Sequence sequence = new Sequence(path);
sequence.Dispose();
}
catch (Exception)
{
ret = false;
}
break;
}
default:
break;
}
return(ret);
}
