public void OpenOverlay(Guid gPresenter)
{
object o;
if (m_ImageHandlers != null)
{
foreach (ImageHandler ih in m_ImageHandlers)
{
ih.Dispose();
}
m_ImageHandlers = null;
}
m_ImageHandlers = new ImageHandler[2];
m_ImageHandlers[0] = new ImageFromPixels(30, new FourCC("YUY2"), 320, 240, 16);
//m_ImageHandlers[0] = new ImageFromPixels(30, new FourCC(3), 320, 240, 32, 255);
//m_ImageHandlers[0] = new ImageFromPixels(30, new FourCC("AYUV"), 320, 240, 32, 255);
//m_ImageHandlers[0] = new ImageFromPixels(30, new FourCC("NV12"), 320, 240, 12, 255);
//m_ImageHandlers[1] = new ImageFromText(30, new FourCC(3), 320, 240, 32);
m_ImageHandlers[1] = new ImageFromText(30, new FourCC("AYUV"), 320, 240, 32);
InitializeGraph();
SetupGraph(gPresenter);
IMFGetService pGetService = (IMFGetService)m_pEVR;
pGetService.GetService(MFServices.MR_VIDEO_MIXER_SERVICE, typeof(IMFVideoMixerControl).GUID, out o);
m_pMixer = (IMFVideoMixerControl)o;
pGetService.GetService(MFServices.MR_VIDEO_RENDER_SERVICE, typeof(IMFVideoPositionMapper).GUID, out o);
m_pMapper = (IMFVideoPositionMapper)o;
}
protected override void Initialize(IGraphBuilder pGraphBuilder, IntPtr hMediaWindow)
{
object factoryObject = null;
object presenterObject = null;
try
{
int hr = ClassFactory.GetEvrPresenterClassFactory(ref CLSID_CustomEVRPresenter, ref ClassFactory.IID_ClassFactory, out factoryObject);
Marshal.ThrowExceptionForHR(hr);
IClassFactory factory = (IClassFactory)factoryObject;
var iidPresenter = typeof(IMFVideoPresenter).GUID;
hr = factory.CreateInstance(null, ref iidPresenter, out presenterObject);
Marshal.ThrowExceptionForHR(hr);
IMFVideoPresenter presenter = (IMFVideoPresenter)presenterObject;
IMFVideoRenderer renderer = (IMFVideoRenderer)BaseFilter; // will be released when IBaseFilter is released
renderer.InitializeRenderer(null, presenter);
IMFGetService pMFGetService = (IMFGetService)BaseFilter; // will be released when IBaseFilter is released
object o;
var serviceId = ServiceID.EnhancedVideoRenderer;
var iidImfVideoDisplayControl = typeof(IMFVideoDisplayControl).GUID;
Marshal.ThrowExceptionForHR(pMFGetService.GetService(ref serviceId, ref iidImfVideoDisplayControl, out o));
_pMFVideoDisplayControl = (IMFVideoDisplayControl)o;
_pMFVideoDisplayControl.SetVideoWindow(hMediaWindow);
_pMFVideoDisplayControl.SetAspectRatioMode(MFVideoAspectRatioMode.MFVideoARMode_None);
_pvpPresenterConfig = (IPvpPresenterConfig)presenterObject;
_pvpPresenterConfig.SetBufferCount(PRESENTER_BUFFER_COUNT);
_pvpPresenterHook.HookUp(presenterObject);
// as EVR requests IMFVideoDisplayControl from the presenter and our custom presenter implements IPvpPresenter and IPvpPresenterConfig
// presenterObject and _pMFVideoDisplayControl point to the same RCW
presenterObject = null; // we will release the presenter when releasing _pMFVideoDisplayControl
}
catch
{
_pMFVideoDisplayControl = null;
_pvpPresenterConfig = null;
}
finally
{
if (factoryObject != null)
{
Marshal.FinalReleaseComObject(factoryObject);
}
if (presenterObject != null)
{
Marshal.FinalReleaseComObject(presenterObject);
}
}
}
protected override void Initialize(IGraphBuilder pGraphBuilder, IntPtr hMediaWindow)
{
// QUERY the EVR interfaces
try
{
IMFGetService pMFGetService = (IMFGetService)BaseFilter; // will be released when IBaseFilter is released
object o;
Guid serviceId = ServiceID.EnhancedVideoRenderer;
Guid IID_IMFVideoDisplayControl = typeof(IMFVideoDisplayControl).GUID;
Marshal.ThrowExceptionForHR(pMFGetService.GetService(ref serviceId, ref IID_IMFVideoDisplayControl, out o));
_pMfVideoDisplayControl = (IMFVideoDisplayControl)o;
_pMfVideoDisplayControl.SetVideoWindow(hMediaWindow);
_pMfVideoDisplayControl.SetAspectRatioMode(MFVideoAspectRatioMode.MFVideoARMode_None);
}
catch (Exception e)
{
throw new FilterGraphBuilderException(GraphBuilderError.ConfigureEVR, e);
}
}
/// <summary>
/// Retrieves a service interface.
/// </summary>
/// <typeparam name="T">The COM interface being requested.</typeparam>
/// <param name="getService">A valid IMFGetService instance.</param>
/// <param name="guidService">The service identifier (SID) of the service.</param>
/// <param name="service">Receives the interface instance.</param>
/// <returns>If this function succeeds, it returns the S_OK member. Otherwise, it returns another HResult's member that describe the error.</returns>
public static HResult GetService <T>(this IMFGetService getService, Guid guidService, out T service) where T : class
{
if (getService == null)
{
throw new ArgumentNullException("getService");
}
Type typeOfT = typeof(T);
if (!typeOfT.IsInterface)
{
throw new ArgumentOutOfRangeException("T", "T must be a COM visible interface.");
}
object tmp;
HResult hr = getService.GetService(guidService, typeOfT.GUID, out tmp);
service = hr.Succeeded() ? tmp as T : default(T);
return(hr);
}
/// <summary>
/// Event that is raised after a DaggerNode has been created and associated to the UI element
/// </summary>
/// <param name="node"></param>
void DSFilterNodeUI_DaggerNodeAttached(DaggerLib.Core.DaggerNode node)
{
_dsfilternode = (DSFilterNode)node;
CaptionText = node.ToString();
// hook the AfterNodeRemoved event to dispose of any directshow interfaces
node.AfterNodeRemoved += new DaggerLib.Core.AfterNodeRemoveHandler(node_AfterNodeRemoved);
// get the IBaseFilter from the DSFilterNode
IBaseFilter filter = _dsfilternode._filter;
// only grab the video window or EVR if it was manually added to the graph via the UI
if (_dsfilternode._manualAdded || (_dsfilternode.ParentGraph.ParentUIGraph as DSDaggerUIGraph)._filterGraphCreated)
{
// if it supports IVideoWindow create a VideoInternalWindow for it
IVideoWindow vw = filter as IVideoWindow;
if (vw != null)
{
try
{
_videoWindow = new VideoInternalWindow(CaptionText, filter);
_videoWindow.Dock = DockStyle.Fill;
_videoWindow.Visible = true;
InternalControl.Controls.Add(_videoWindow);
// only nodes with video windows are resizeable
Resizable = true;
// hook the connection events to init/deinit the video window
node.ParentGraph.AfterPinsConnected += new DaggerLib.Core.PinAfterConnectedHandler(ParentGraph_AfterPinsConnected);
}
catch (Exception ex)
{
#if DEBUG
MessageBox.Show(ex.Message);
#endif
_videoWindow = null;
}
}
// if it's an Enhaced Video Renderer create a VideoInternalWindow for it
// (see docs for Windows Media Foundation)
IMFGetService mfgs = filter as IMFGetService;
if (mfgs != null)
{
// this is a video horse of a different color
// create a video clipping window for the Media Foundation Enhanced Video Renderer
try
{
// get the IMFVideoDisplayControl for the EVR filter
object o = null;
mfgs.GetService(MediaFoundation.MFServices.MR_VIDEO_RENDER_SERVICE,
typeof(IMFVideoDisplayControl).GUID,
out o
);
m_pVideoDisplay = o as IMFVideoDisplayControl;
// if the Video Size is 0,0 the EVR hasn't been initialized/connected yet
MediaFoundation.Misc.SIZE videoSize = new MediaFoundation.Misc.SIZE();
MediaFoundation.Misc.SIZE ar = new MediaFoundation.Misc.SIZE();
m_pVideoDisplay.GetNativeVideoSize(videoSize, ar);
if (videoSize.cx == 0 && videoSize.cy == 0)
{
// You only get one chance to set the number of pins in an EVR filter.
PinsComboBoxForm pcf = new PinsComboBoxForm();
if (pcf.ShowDialog() == DialogResult.OK)
{
(filter as IEVRFilterConfig).SetNumberOfStreams(pcf.Value);
}
pcf.Dispose();
}
_videoWindow = new VideoInternalWindow(CaptionText, m_pVideoDisplay);
_videoWindow.Dock = DockStyle.Fill;
_videoWindow.Visible = true;
InternalControl.Controls.Add(_videoWindow);
// only nodes with video windows are resizeable
Resizable = true;
// hook the connection events to init/deinit the video window
node.ParentGraph.AfterPinsConnected += new DaggerLib.Core.PinAfterConnectedHandler(ParentGraph_AfterPinsConnected);
}
catch (InvalidCastException)
{
m_pVideoDisplay = null;
}
}
}
// if it's a DMO, create the DMO properties page for it
if ((filter as IDMOWrapperFilter) != null)
{
// set the caption to show it's a DMO
CaptionText = "DMO - " + CaptionText;
CaptionColor = Color.Green;
CaptionColorUnfocused = Color.LightGreen;
}
// remove clock button if it doesn't support IReferenceClock
_referenceClock = filter as IReferenceClock;
if (_referenceClock == null)
{
CaptionButtons.RemoveAt(CaptionButtons.AllButtons.IndexOf(_clockButton));
}
else
{
// see if this filter is the reference clock for the graph
IReferenceClock graphClock = null;
filter.GetSyncSource(out graphClock);
_clockButton.Tag = false;
_clockButton.MouseOutsideTint = Color.DarkGray;
if (graphClock != null)
{
if (graphClock == _referenceClock)
{
_clockButton.MouseOutsideTint = Color.Yellow;
_clockButton.Tag = true;
}
Marshal.ReleaseComObject(graphClock);
}
}
// remove video window button if it's not a video window
if (_videoWindow == null)
{
CaptionButtons.RemoveAt(CaptionButtons.AllButtons.IndexOf(_detachVideoWindowButton));
}
// Sync the pins to the Pin Property Pages
SyncPinPropertyPages(null);
// set it to the smallest possible size. DaggerLib uses InternalControlMinimumSize
// to prevent the UI node from being smaller than designated
this.Size = new Size(1, 1);
}
private void InitializeEVR(IBaseFilter pEVR, int dwStreams, out IMFVideoDisplayControl ppDisplay)
{
IMFVideoRenderer pRenderer;
IMFVideoDisplayControl pDisplay;
IEVRFilterConfig pConfig;
IMFVideoPresenter pPresenter;
// Before doing anything else, set any custom presenter or mixer.
// Presenter?
if (m_clsidPresenter != Guid.Empty)
{
Type type = Type.GetTypeFromCLSID(m_clsidPresenter);
// An error here means that the custom presenter sample from
// http://mfnet.sourceforge.net hasn't been installed or
// registered.
pPresenter = (IMFVideoPresenter)Activator.CreateInstance(type);
try
{
pRenderer = (IMFVideoRenderer)pEVR;
pRenderer.InitializeRenderer(null, pPresenter);
}
finally
{
//Marshal.ReleaseComObject(pPresenter);
}
}
// Continue with the rest of the set-up.
// Set the video window.
object o;
IMFGetService pGetService = null;
pGetService = (IMFGetService)pEVR;
pGetService.GetService(MFServices.MR_VIDEO_RENDER_SERVICE, typeof(IMFVideoDisplayControl).GUID, out o);
try
{
pDisplay = (IMFVideoDisplayControl)o;
}
catch
{
Marshal.ReleaseComObject(o);
throw;
}
try
{
// Set the number of streams.
pDisplay.SetVideoWindow(m_hwndVideo.Handle);
if (dwStreams > 1)
{
pConfig = (IEVRFilterConfig)pEVR;
pConfig.SetNumberOfStreams(dwStreams);
}
// Set the display position to the entire window.
Rectangle r = m_hwndVideo.ClientRectangle;
MFRect rc = new MFRect(r.Left, r.Top, r.Right, r.Bottom);
pDisplay.SetVideoPosition(null, rc);
// Return the IMFVideoDisplayControl pointer to the caller.
ppDisplay = pDisplay;
}
finally
{
//Marshal.ReleaseComObject(pDisplay);
}
m_pMixer = null;
}
