/// <summary>
/// Shut down graph
/// </summary>
private void CloseInterfaces()
{
int hr;
lock (this)
{
// Stop the graph
if (this.mediaControl != null)
{
//// Stop the graph
//hr = this.mediaControl.Stop();
}
// Free the preview window (ignore errors)
if (this.videoWindow != null)
{
this.videoWindow.put_Visible(OABool.False);
this.videoWindow.put_Owner(IntPtr.Zero);
this.videoWindow = null;
}
if (this.imageHandler != null)
{
this.imageHandler.Dispose();
this.imageHandler = null;
}
// Release the graph
if (this.filterGraph != null)
{
hr = ((IMediaEventSink)this.filterGraph).Notify(EventCode.UserAbort, IntPtr.Zero, IntPtr.Zero);
Marshal.ReleaseComObject(this.filterGraph);
this.filterGraph = null;
this.mediaControl = null;
}
}
#if DEBUG
if (this.dsRot != null)
{
this.dsRot.Dispose();
this.dsRot = null;
}
#endif
GC.Collect();
}
///////////////////////////////////////////////////////////////////////////////
// Construction and Initializing methods //
///////////////////////////////////////////////////////////////////////////////
#region CONSTRUCTION
/// <summary>
/// Initializes a new instance of the DSRecordWithDMO class.
/// </summary>
/// <param name="newImageHandler">An <see cref="ImageFromVectorGraphics"/>
/// with the callback.</param>
/// <param name="newVideoExportProperties">A <see cref="VideoExportProperties"/> with
/// the video export properties.</param>
/// <param name="newPreviewWindow">A <see cref="Control"/> with
/// the preview panel.</param>
public DSRecordWithDMO(
ImageFromVectorGraphics newImageHandler,
VideoExportProperties newVideoExportProperties,
Control newPreviewWindow)
{
try
{
// set the image provider
this.imageHandler = newImageHandler;
// set the video properties
this.videoExportProperties = newVideoExportProperties;
if (this.videoExportProperties.OutputVideoProperties.VideoCompressor != string.Empty)
{
// Create the filter for the selected video compressor
this.videoCompressor = DirectShowUtils.CreateFilter(
FilterCategory.VideoCompressorCategory,
this.videoExportProperties.OutputVideoProperties.VideoCompressor);
}
if (this.videoExportProperties.OutputVideoProperties.AudioCompressor != string.Empty)
{
// Create the filter for the selected video compressor
this.audioCompressor = DirectShowUtils.CreateFilter(
FilterCategory.AudioCompressorCategory,
this.videoExportProperties.OutputVideoProperties.AudioCompressor);
}
// Set up preview window
this.previewWindow = newPreviewWindow;
// Set up the graph
if (!this.SetupGraph())
{
throw new OperationCanceledException("The DirectShow graph could not be created,"
+ " try to use another video or audio compressor.");
}
}
catch
{
this.Dispose();
throw;
}
}
