public void Reset()
{
sampleIndex = 0;
sampleProcessed = 0;
sampleDropped = 0;
mediaState = null;
bProcess = true;
lastMediaTime = -1;
sample.Buffer = null;
if (sample.UnmanagedBuffer != null)
{
sample.UnmanagedBuffer.Release();
}
sample.UnmanagedBuffer = null;
}
} // EnumInputDev
private int InitInputDev(MediaState ms, DevItem videoItem, DevItem audioItem)
{
int hr = 0;
// create Filter Graph Manager
if (ms.graph == null)
{
//ms.graph = new FilterGraph() as IGraphBuilder;
ms.graph = new FilterGraph() as IFilterGraph2;
if (ms.graph == null)
{
throw new COMException("Cannot create FilterGraph");
}
ms.captureGraph = new CaptureGraphBuilder2() as ICaptureGraphBuilder2;
if (ms.captureGraph == null)
{
throw new COMException("Cannot create CaptureGraphBuilder2");
}
hr = ms.captureGraph.SetFiltergraph(ms.graph);
DsError.ThrowExceptionForHR(hr);
}
if (audioItem != null)
{
// remove the old audio input
if (ms.audioInput != null)
{
hr = ms.graph.RemoveFilter(ms.audioInput);
Util.ReleaseComObject(ref ms.audioInput);
DsError.ThrowExceptionForHR(hr);
}
// create audio input
if (!audioItem.Disabled)
{
// using BindToMoniker
ms.audioInput = Marshal.BindToMoniker(audioItem.DisplayName) as IBaseFilter;
// add audio input to the graph
hr = ms.graph.AddFilter(ms.audioInput, audioItem.FriendlyName);
DsError.ThrowExceptionForHR(hr);
}
}
if (videoItem != null)
{
// remove the old video input
if (ms.videoInput != null)
{
hr = ms.graph.RemoveFilter(ms.videoInput);
Util.ReleaseComObject(ref ms.videoInput);
DsError.ThrowExceptionForHR(hr);
}
// create video input
// Using BindToMoniker
ms.videoInput = Marshal.BindToMoniker(videoItem.DisplayName) as IBaseFilter;
// add video input to the graph
hr = ms.graph.AddFilter(ms.videoInput, videoItem.FriendlyName);
DsError.ThrowExceptionForHR(hr);
}
return(hr);
}
