public override int RenderVisualization()
{
if (VisualizationWindow.InvokeRequired)
{
ThreadSafeRenderDelegate d = new ThreadSafeRenderDelegate(RenderVisualization);
return((int)VisualizationWindow.Invoke(d));
}
RECT rect = new RECT();
rect.left = 0;
rect.top = 0;
rect.right = VisualizationWindow.Width;
rect.bottom = VisualizationWindow.Height;
TimedLvl.waveform = new byte[2048];
TimedLvl.frequency = new byte[2048];
TimedLvl.State = (int)WMPInterop.AudioState.Playing;
bool gotWaveData = GetWaveData(ref TimedLvl.waveform);
bool gotfreqData = GetFftData(ref TimedLvl.frequency);
IntPtr pTimedLevel = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(WMPInterop.TimedLevel)));
Marshal.StructureToPtr(TimedLvl, pTimedLevel, false);
int result = 0;
result = WMPInterop.RenderWMP(pTimedLevel, ref rect);
Marshal.FreeHGlobal(pTimedLevel);
return(result);
}
public override int RenderVisualization()
{
if (VisualizationWindow.InvokeRequired)
{
ThreadSafeRenderDelegate d = new ThreadSafeRenderDelegate(RenderVisualization);
return (int)VisualizationWindow.Invoke(d);
}
RECT rect = new RECT();
rect.left = 0;
rect.top = 0;
rect.right = VisualizationWindow.Width;
rect.bottom = VisualizationWindow.Height;
TimedLvl.waveform = new byte[2048];
TimedLvl.frequency = new byte[2048];
TimedLvl.State = (int)WMPInterop.AudioState.Playing;
bool gotWaveData = GetWaveData(ref TimedLvl.waveform);
bool gotfreqData = GetFftData(ref TimedLvl.frequency);
IntPtr pTimedLevel = Marshal.AllocHGlobal(Marshal.SizeOf(typeof (WMPInterop.TimedLevel)));
Marshal.StructureToPtr(TimedLvl, pTimedLevel, false);
int result = 0;
try
{
result = WMPInterop.RenderWMP(pTimedLevel, ref rect);
}
catch (AccessViolationException)
{
return result; // We could get an Access Violation when changing Vis
}
Marshal.FreeHGlobal(pTimedLevel);
return result;
}
