public override void Dispose()
{
FLLog.Info("Video", "Closing Windows Media Foundation backend");
if (session != null)
{
session.Stop();
session.ClearTopologies();
//Sample grabber thread works asynchronously (as task), so we need give him a time, to understand, that session is closed
//minimal time to wait: 33 ms (1000 ms / 30 fps), but I decide to use a little more
System.Threading.Thread.Sleep(100);
session.Close();
session.Dispose();
session = null;
}
if (topology != null)
{
topology.Dispose();
topology = null;
}
if (videoSampler != null)
{
videoSampler.Dispose();
videoSampler = null;
}
if (clock != null)
{
clock.Dispose();
clock = null;
}
if (_texture != null)
{
_texture.Dispose();
_texture = null;
}
if (cb != null)
{
cb.Dispose();
cb = null;
}
}
public override void PlayFile(string filename)
{
//Load the file
MediaSource mediaSource;
{
var resolver = new SourceResolver();
ObjectType otype;
var source = new ComObject(resolver.CreateObjectFromURL(filename, SourceResolverFlags.MediaSource, null, out otype));
try
{
// Sometimes throws HRESULT: [0x80004002], Module: [General], ApiCode: [E_NOINTERFACE/No such interface supported], Message: No such interface supported. Bug?
mediaSource = source.QueryInterface <MediaSource>();
}
catch (SharpDXException)
{
mediaSource = null;
FLLog.Error("VideoPlayerWMF", "QueryInterface failed on Media Foundation");
}
resolver.Dispose();
source.Dispose();
}
if (mediaSource is null)
{
return;
}
PresentationDescriptor presDesc;
mediaSource.CreatePresentationDescriptor(out presDesc);
for (int i = 0; i < presDesc.StreamDescriptorCount; i++)
{
SharpDX.Mathematics.Interop.RawBool selected;
StreamDescriptor desc;
presDesc.GetStreamDescriptorByIndex(i, out selected, out desc);
if (selected)
{
TopologyNode sourceNode;
MediaFactory.CreateTopologyNode(TopologyType.SourceStreamNode, out sourceNode);
sourceNode.Set(TopologyNodeAttributeKeys.Source, mediaSource);
sourceNode.Set(TopologyNodeAttributeKeys.PresentationDescriptor, presDesc);
sourceNode.Set(TopologyNodeAttributeKeys.StreamDescriptor, desc);
TopologyNode outputNode;
MediaFactory.CreateTopologyNode(TopologyType.OutputNode, out outputNode);
var majorType = desc.MediaTypeHandler.MajorType;
if (majorType == MediaTypeGuids.Video)
{
Activate activate;
videoSampler = new MFSamples();
//retrieve size of video
long sz = desc.MediaTypeHandler.CurrentMediaType.Get <long>(new Guid("{1652c33d-d6b2-4012-b834-72030849a37d}"));
int height = (int)(sz & uint.MaxValue), width = (int)(sz >> 32);
_texture = new Texture2D(width, height, false, SurfaceFormat.Color);
mt = new MediaType();
mt.Set(MediaTypeAttributeKeys.MajorType, MediaTypeGuids.Video);
// Specify that we want the data to come in as RGB32.
mt.Set(MediaTypeAttributeKeys.Subtype, new Guid("00000016-0000-0010-8000-00AA00389B71"));
GetMethods();
MFCreateSampleGrabberSinkActivate(mt, videoSampler, out activate);
outputNode.Object = activate;
}
if (majorType == MediaTypeGuids.Audio)
{
Activate activate;
MediaFactory.CreateAudioRendererActivate(out activate);
outputNode.Object = activate;
}
topology.AddNode(sourceNode);
topology.AddNode(outputNode);
sourceNode.ConnectOutput(0, outputNode, 0);
sourceNode.Dispose();
outputNode.Dispose();
}
desc.Dispose();
}
presDesc.Dispose();
mediaSource.Dispose();
//Play the file
cb = new MFCallback(this, session);
session.BeginGetEvent(cb, null);
session.SetTopology(SessionSetTopologyFlags.Immediate, topology);
// Get the clock
clock = session.Clock.QueryInterface <PresentationClock>();
// Start playing.
Playing = true;
}
