private async void mLaunchButton_Click(object sender, RoutedEventArgs e)
{
if (mLaunchButton.Content.ToString() == "Stop")
{
lock (this)
{
mAccess = false;
}
if (mISession != null)
{
await mISession.closeSessionAsync();
}
mLaunchButton.Content = "Launch";
mISession = null;
return;
}
var lSourceNode = mSourcesComboBox.SelectedItem as XmlNode;
if (lSourceNode == null)
{
return;
}
var lNode = lSourceNode.SelectSingleNode("Source.Attributes/Attribute[@Name='MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_SYMBOLIC_LINK']/SingleValue/@Value");
if (lNode == null)
{
return;
}
string lSymbolicLink = lNode.Value;
lSourceNode = mStreamsComboBox.SelectedItem as XmlNode;
if (lSourceNode == null)
{
return;
}
lNode = lSourceNode.SelectSingleNode("@Index");
if (lNode == null)
{
return;
}
uint lStreamIndex = 0;
if (!uint.TryParse(lNode.Value, out lStreamIndex))
{
return;
}
lSourceNode = mMediaTypesComboBox.SelectedItem as XmlNode;
if (lSourceNode == null)
{
return;
}
lNode = lSourceNode.SelectSingleNode("@Index");
if (lNode == null)
{
return;
}
uint lMediaTypeIndex = 0;
if (!uint.TryParse(lNode.Value, out lMediaTypeIndex))
{
return;
}
lNode = lSourceNode.SelectSingleNode("MediaTypeItem[@Name='MF_MT_FRAME_SIZE']/Value.ValueParts/ValuePart[1]/@Value");
if (lNode == null)
{
return;
}
uint lVideoWidth = 0;
if (!uint.TryParse(lNode.Value, out lVideoWidth))
{
return;
}
lNode = lSourceNode.SelectSingleNode("MediaTypeItem[@Name='MF_MT_FRAME_SIZE']/Value.ValueParts/ValuePart[2]/@Value");
if (lNode == null)
{
return;
}
uint lVideoHeight = 0;
if (!uint.TryParse(lNode.Value, out lVideoHeight))
{
return;
}
int lWidthInBytes = await mCaptureManager.getStrideForBitmapInfoHeaderAsync(
MFVideoFormat_RGB24,
lVideoWidth);
lsampleByteSize = (uint)Math.Abs(lWidthInBytes) * lVideoHeight;
mData = new byte[lsampleByteSize];
var lSinkControl = await mCaptureManager.createSinkControlAsync();
string lxmldoc = await mCaptureManager.getCollectionOfSinksAsync();
XmlDocument doc = new XmlDocument();
doc.LoadXml(lxmldoc);
var lSinkNode = doc.SelectSingleNode("SinkFactories/SinkFactory[@GUID='{3D64C48E-EDA4-4EE1-8436-58B64DD7CF13}']");
if (lSinkNode == null)
{
return;
}
var lContainerNode = lSinkNode.SelectSingleNode("Value.ValueParts/ValuePart[1]");
if (lContainerNode == null)
{
return;
}
setContainerFormat(lContainerNode);
var lSinkFactory = await lSinkControl.createSampleGrabberCallbackSinkFactoryAsync(mReadMode);
var lISampleGrabberCallbackAsync = await lSinkFactory.createOutputNodeAsync(
MFMediaType_Video,
MFVideoFormat_RGB24);
if (lISampleGrabberCallbackAsync != null)
{
byte[] lData = new byte[lsampleByteSize];
lISampleGrabberCallbackAsync.mUpdateEvent += delegate
(byte[] aData, uint aLength)
{
lock (this)
{
if (!mAccess)
{
return;
}
}
Dispatcher.Invoke(
DispatcherPriority.Normal,
new Action(() => mDisplayImage.Source = FromArray(aData, lVideoWidth, lVideoHeight, mChannels)));
};
var lSampleGrabberCallNode = lISampleGrabberCallbackAsync.getTopologyNode();
if (lSampleGrabberCallNode == null)
{
return;
}
var lSourceControl = await mCaptureManager.createSourceControlAsync();
if (lSourceControl == null)
{
return;
}
object lPtrSourceNode = await lSourceControl.createSourceNodeWithDownStreamConnectionAsync(
lSymbolicLink,
lStreamIndex,
lMediaTypeIndex,
lSampleGrabberCallNode);
List <object> lSourceMediaNodeList = new List <object>();
lSourceMediaNodeList.Add(lPtrSourceNode);
var lSessionControl = await mCaptureManager.createSessionControlAsync();
if (lSessionControl == null)
{
return;
}
mISession = await lSessionControl.createSessionAsync(
lSourceMediaNodeList.ToArray());
if (mISession == null)
{
return;
}
await mISession.startSessionAsync(0, Guid.Empty);
mLaunchButton.Content = "Stop";
mWebCamControl = await lSourceControl.createWebCamControlAsync(lSymbolicLink);
if (mWebCamControl != null)
{
string lXMLstring = await mWebCamControl.getCamParametrsAsync();
XmlDataProvider lXmlDataProvider = (XmlDataProvider)this.Resources["XmlWebCamParametrsProvider"];
if (lXmlDataProvider == null)
{
return;
}
System.Xml.XmlDocument ldoc = new System.Xml.XmlDocument();
ldoc.LoadXml(lXMLstring);
lXmlDataProvider.Document = ldoc;
}
lock (this)
{
mAccess = true;
}
}
}
private async void mLaunchButton_Click(object sender, RoutedEventArgs e)
{
if (mLaunchButton.Content.ToString() == "Stop")
{
mTimer.Stop();
if (mISession != null)
{
await mISession.closeSessionAsync();
}
mLaunchButton.Content = "Launch";
if (mISampleGrabberCall != null)
{
System.Runtime.InteropServices.Marshal.ReleaseComObject(mISampleGrabberCall.getTopologyNode());
}
return;
}
var lSourceNode = mSourcesComboBox.SelectedItem as XmlNode;
if (lSourceNode == null)
{
return;
}
var lNode = lSourceNode.SelectSingleNode("Source.Attributes/Attribute[@Name='MF_DEVSOURCE_ATTRIBUTE_SOURCE_TYPE_VIDCAP_SYMBOLIC_LINK']/SingleValue/@Value");
if (lNode == null)
{
return;
}
string lSymbolicLink = lNode.Value;
lSourceNode = mStreamsComboBox.SelectedItem as XmlNode;
if (lSourceNode == null)
{
return;
}
lNode = lSourceNode.SelectSingleNode("@Index");
if (lNode == null)
{
return;
}
uint lStreamIndex = 0;
if (!uint.TryParse(lNode.Value, out lStreamIndex))
{
return;
}
lSourceNode = mMediaTypesComboBox.SelectedItem as XmlNode;
if (lSourceNode == null)
{
return;
}
lNode = lSourceNode.SelectSingleNode("@Index");
if (lNode == null)
{
return;
}
uint lMediaTypeIndex = 0;
if (!uint.TryParse(lNode.Value, out lMediaTypeIndex))
{
return;
}
lNode = lSourceNode.SelectSingleNode("MediaTypeItem[@Name='MF_MT_FRAME_SIZE']/Value.ValueParts/ValuePart[1]/@Value");
if (lNode == null)
{
return;
}
if (!uint.TryParse(lNode.Value, out mVideoWidth))
{
return;
}
lNode = lSourceNode.SelectSingleNode("MediaTypeItem[@Name='MF_MT_FRAME_SIZE']/Value.ValueParts/ValuePart[2]/@Value");
if (lNode == null)
{
return;
}
if (!uint.TryParse(lNode.Value, out mVideoHeight))
{
return;
}
int lWidthInBytes = await mCaptureManager.getStrideForBitmapInfoHeaderAsync(
MFVideoFormat_RGB32,
mVideoWidth);
lsampleByteSize = (uint)Math.Abs(lWidthInBytes) * mVideoHeight;
mData = new byte[lsampleByteSize];
var lSinkControl = await mCaptureManager.createSinkControlAsync();
string lxmldoc = await mCaptureManager.getCollectionOfSinksAsync();
XmlDocument doc = new XmlDocument();
doc.LoadXml(lxmldoc);
var lSinkNode = doc.SelectSingleNode("SinkFactories/SinkFactory[@GUID='{759D24FF-C5D6-4B65-8DDF-8A2B2BECDE39}']");
if (lSinkNode == null)
{
return;
}
var lContainerNode = lSinkNode.SelectSingleNode("Value.ValueParts/ValuePart[1]");
if (lContainerNode == null)
{
return;
}
setContainerFormat(lContainerNode);
mSinkFactory = await lSinkControl.createSampleGrabberCallSinkFactoryAsync(mReadMode);
mISampleGrabberCall = await mSinkFactory.createOutputNodeAsync(
MFMediaType_Video,
MFVideoFormat_RGB32,
lsampleByteSize);
if (mISampleGrabberCall != null)
{
var lSampleGrabberCallNode = mISampleGrabberCall.getTopologyNode();
if (lSampleGrabberCallNode == null)
{
return;
}
object lPtrSourceNode;
var lSourceControl = await mCaptureManager.createSourceControlAsync();
if (lSourceControl == null)
{
return;
}
lPtrSourceNode = await lSourceControl.createSourceNodeWithDownStreamConnectionAsync(
lSymbolicLink,
lStreamIndex,
lMediaTypeIndex,
lSampleGrabberCallNode);
List <object> lSourceMediaNodeList = new List <object>();
lSourceMediaNodeList.Add(lPtrSourceNode);
var lSessionControl = await mCaptureManager.createSessionControlAsync();
if (lSessionControl == null)
{
return;
}
mISession = await lSessionControl.createSessionAsync(
lSourceMediaNodeList.ToArray());
if (mISession == null)
{
return;
}
await mISession.startSessionAsync(0, Guid.Empty);
mLaunchButton.Content = "Stop";
mWebCamControl = await lSourceControl.createWebCamControlAsync(lSymbolicLink);
if (mWebCamControl != null)
{
string lXMLstring = await mWebCamControl.getCamParametrsAsync();
XmlDataProvider lXmlDataProvider = (XmlDataProvider)this.Resources["XmlWebCamParametrsProvider"];
if (lXmlDataProvider == null)
{
return;
}
System.Xml.XmlDocument ldoc = new System.Xml.XmlDocument();
if (!string.IsNullOrWhiteSpace(lXMLstring))
{
ldoc.LoadXml(lXMLstring);
}
lXmlDataProvider.Document = ldoc;
}
mTimer.Start();
}
}
