private IFilterGraph2 BuildGraph(string sFileName)
{
int hr;
IBaseFilter ibfRenderer = null;
IBaseFilter ibfAVISource = null;
IPin IPinIn = null;
IPin IPinOut = null;
IFilterGraph2 graphBuilder = new FilterGraph() as IFilterGraph2;
m_dsrot = new DsROTEntry(graphBuilder);
try
{
// Get the file source filter
ibfAVISource = new AsyncReader() as IBaseFilter;
// Add it to the graph
hr = graphBuilder.AddFilter(ibfAVISource, "Ds.NET AsyncReader");
Marshal.ThrowExceptionForHR(hr);
// Set the file name
IFileSourceFilter fsf = ibfAVISource as IFileSourceFilter;
hr = fsf.Load(sFileName, null);
Marshal.ThrowExceptionForHR(hr);
IPinOut = DsFindPin.ByDirection(ibfAVISource, PinDirection.Output, 0);
// Get the default video renderer
ibfRenderer = (IBaseFilter) new VideoRendererDefault();
// Add it to the graph
hr = graphBuilder.AddFilter(ibfRenderer, "Ds.NET VideoRendererDefault");
Marshal.ThrowExceptionForHR(hr);
IPinIn = DsFindPin.ByDirection(ibfRenderer, PinDirection.Input, 0);
hr = graphBuilder.Connect(IPinOut, IPinIn);
Marshal.ThrowExceptionForHR(hr);
}
catch
{
Marshal.ReleaseComObject(graphBuilder);
throw;
}
finally
{
Marshal.ReleaseComObject(ibfAVISource);
Marshal.ReleaseComObject(ibfRenderer);
Marshal.ReleaseComObject(IPinIn);
Marshal.ReleaseComObject(IPinOut);
}
return(graphBuilder);
}
private IFilterGraph2 BuildGraph(string sFileName)
{
int hr;
IBaseFilter ibfRenderer = null;
IBaseFilter ibfAVISource = null;
IPin IPinIn = null;
IPin IPinOut = null;
IPin iSampleIn = null;
IPin iSampleOut = null;
SampleGrabber sg = null;
IFilterGraph2 graphBuilder = new FilterGraph() as IFilterGraph2;
try
{
// Get the file source filter
ibfAVISource = new AsyncReader() as IBaseFilter;
// Add it to the graph
hr = graphBuilder.AddFilter(ibfAVISource, "Ds.NET AsyncReader");
Marshal.ThrowExceptionForHR(hr);
// Set the file name
IFileSourceFilter fsf = ibfAVISource as IFileSourceFilter;
hr = fsf.Load(sFileName, null);
Marshal.ThrowExceptionForHR(hr);
IPinOut = DsFindPin.ByDirection(ibfAVISource, PinDirection.Output, 0);
// Get a SampleGrabber
sg = new SampleGrabber();
IBaseFilter grabFilt = sg as IBaseFilter;
m_isg = sg as ISampleGrabber;
// Set the media type to Video/RBG24
AMMediaType media;
media = new AMMediaType();
media.majorType = MediaType.Video;
media.subType = MediaSubType.RGB24;
media.formatType = FormatType.VideoInfo;
hr = m_isg.SetMediaType(media);
Marshal.ThrowExceptionForHR(hr);
// Add the sample grabber to the graph
hr = graphBuilder.AddFilter(grabFilt, "Ds.NET SampleGrabber");
Marshal.ThrowExceptionForHR(hr);
iSampleIn = DsFindPin.ByDirection(grabFilt, PinDirection.Input, 0);
iSampleOut = DsFindPin.ByDirection(grabFilt, PinDirection.Output, 0);
// Get the default video renderer
ibfRenderer = (IBaseFilter) new VideoRendererDefault();
// Add it to the graph
hr = graphBuilder.AddFilter(ibfRenderer, "Ds.NET VideoRendererDefault");
Marshal.ThrowExceptionForHR(hr);
IPinIn = DsFindPin.ByDirection(ibfRenderer, PinDirection.Input, 0);
// Connect the file to the sample grabber
hr = graphBuilder.Connect(IPinOut, iSampleIn);
Marshal.ThrowExceptionForHR(hr);
// Connect the sample grabber to the renderer
hr = graphBuilder.Connect(iSampleOut, IPinIn);
Marshal.ThrowExceptionForHR(hr);
}
catch
{
Marshal.ReleaseComObject(graphBuilder);
throw;
}
finally
{
Marshal.ReleaseComObject(ibfRenderer);
Marshal.ReleaseComObject(ibfAVISource);
Marshal.ReleaseComObject(IPinIn);
Marshal.ReleaseComObject(IPinOut);
Marshal.ReleaseComObject(iSampleIn);
Marshal.ReleaseComObject(iSampleOut);
}
return(graphBuilder);
}
private IFilterGraph2 BuildGraph(string sFileName)
{
int hr;
IBaseFilter ibfRenderer = null;
IBaseFilter ibfAVISource = null;
IPin IPinIn = null;
IPin IPinOut = null;
IPin iSampleIn = null;
IPin iSampleOut = null;
SampleGrabber sg = null;
IFilterGraph2 graphBuilder = new FilterGraph() as IFilterGraph2;
try
{
// Get the file source filter
ibfAVISource = new AsyncReader() as IBaseFilter;
// Add it to the graph
hr = graphBuilder.AddFilter(ibfAVISource, "Ds.NET AsyncReader");
Marshal.ThrowExceptionForHR(hr);
// Set the file name
IFileSourceFilter fsf = ibfAVISource as IFileSourceFilter;
hr = fsf.Load(sFileName, null);
Marshal.ThrowExceptionForHR(hr);
IPinOut = DsFindPin.ByDirection(ibfAVISource, PinDirection.Output, 0);
// Get a SampleGrabber
sg = new SampleGrabber();
IBaseFilter grabFilt = sg as IBaseFilter;
ISampleGrabber isg = sg as ISampleGrabber;
// Add the sample grabber to the graph
hr = graphBuilder.AddFilter(grabFilt, "Ds.NET SampleGrabber");
Marshal.ThrowExceptionForHR(hr);
iSampleIn = DsFindPin.ByDirection(grabFilt, PinDirection.Input, 0);
iSampleOut = DsFindPin.ByDirection(grabFilt, PinDirection.Output, 0);
// Get the default video renderer
ibfRenderer = (IBaseFilter) new VideoRendererDefault();
// Add it to the graph
hr = graphBuilder.AddFilter(ibfRenderer, "Ds.NET VideoRendererDefault");
Marshal.ThrowExceptionForHR(hr);
IPinIn = DsFindPin.ByDirection(ibfRenderer, PinDirection.Input, 0);
// Connect the file to the sample grabber
hr = graphBuilder.Connect(IPinOut, iSampleIn);
Marshal.ThrowExceptionForHR(hr);
// Connect the sample grabber to the renderer
hr = graphBuilder.Connect(iSampleOut, IPinIn);
Marshal.ThrowExceptionForHR(hr);
// Configure the sample grabber
ConfigureSampleGrabber(isg);
// Grab a copy of the mediatype being used. Needed
// in one of the tests
m_MediaType = new AMMediaType();
hr = IPinOut.ConnectionMediaType(m_MediaType);
Marshal.ThrowExceptionForHR(hr);
}
catch
{
Marshal.ReleaseComObject(graphBuilder);
throw;
}
finally
{
Marshal.ReleaseComObject(ibfRenderer);
Marshal.ReleaseComObject(ibfAVISource);
Marshal.ReleaseComObject(IPinIn);
Marshal.ReleaseComObject(IPinOut);
Marshal.ReleaseComObject(iSampleIn);
Marshal.ReleaseComObject(iSampleOut);
Marshal.ReleaseComObject(sg);
}
return(graphBuilder);
}
private void SetupGraph(DsDevice dev, int iWidth, int iHeight, short iBPP, Control hControl)
{
int hr;
IAMVideoControl m_VidControl = null;
IFilterGraph2 m_FilterGraph = null;
ISampleGrabber sampGrabber = null;
IBaseFilter capFilter = null;
IPin pCaptureOut = null;
IPin pSampleIn = null;
IPin pRenderIn = null;
// Get the graphbuilder object
m_FilterGraph = new FilterGraph() as IFilterGraph2;
try
{
#if DEBUG
DsROTEntry m_rot = new DsROTEntry(m_FilterGraph);
#endif
// add the video input device
hr = m_FilterGraph.AddSourceFilterForMoniker(dev.Mon, null, dev.Name, out capFilter);
DsError.ThrowExceptionForHR(hr);
// Find the still pin
IPin m_pinStill = DsFindPin.ByCategory(capFilter, PinCategory.Still, 0);
// Didn't find one. Is there a preview pin?
if (m_pinStill == null)
{
m_pinStill = DsFindPin.ByCategory(capFilter, PinCategory.Preview, 0);
}
// Still haven't found one. Need to put a splitter in so we have
// one stream to capture the bitmap from, and one to display. Ok, we
// don't *have* to do it that way, but we are going to anyway.
if (m_pinStill == null)
{
IPin pRaw = null;
IPin pSmart = null;
// There is no still pin
m_VidControl = null;
// Add a splitter
IBaseFilter iSmartTee = (IBaseFilter) new SmartTee();
try
{
hr = m_FilterGraph.AddFilter(iSmartTee, "SmartTee");
DsError.ThrowExceptionForHR(hr);
// Find the find the capture pin from the video device and the
// input pin for the splitter, and connnect them
pRaw = DsFindPin.ByCategory(capFilter, PinCategory.Capture, 0);
pSmart = DsFindPin.ByDirection(iSmartTee, PinDirection.Input, 0);
hr = m_FilterGraph.Connect(pRaw, pSmart);
DsError.ThrowExceptionForHR(hr);
// Now set the capture and still pins (from the splitter)
m_pinStill = DsFindPin.ByName(iSmartTee, "Preview");
pCaptureOut = DsFindPin.ByName(iSmartTee, "Capture");
// If any of the default config items are set, perform the config
// on the actual video device (rather than the splitter)
if (iHeight + iWidth + iBPP > 0)
{
//SetConfigParms(pRaw, iWidth, iHeight, iBPP);
}
}
finally
{
if (pRaw != null)
{
Marshal.ReleaseComObject(pRaw);
}
if (pRaw != pSmart)
{
Marshal.ReleaseComObject(pSmart);
}
if (pRaw != iSmartTee)
{
Marshal.ReleaseComObject(iSmartTee);
}
}
}
else
{
// Get a control pointer (used in Click())
m_VidControl = capFilter as IAMVideoControl;
pCaptureOut = DsFindPin.ByCategory(capFilter, PinCategory.Capture, 0);
// If any of the default config items are set
if (iHeight + iWidth + iBPP > 0)
{
//SetConfigParms(m_pinStill, iWidth, iHeight, iBPP);
}
}
// Get the SampleGrabber interface
sampGrabber = new SampleGrabber() as ISampleGrabber;
// Configure the sample grabber
IBaseFilter baseGrabFlt = sampGrabber as IBaseFilter;
//ConfigureSampleGrabber(sampGrabber);
pSampleIn = DsFindPin.ByDirection(baseGrabFlt, PinDirection.Input, 0);
// Get the default video renderer
IBaseFilter pRenderer = new VideoRendererDefault() as IBaseFilter;
hr = m_FilterGraph.AddFilter(pRenderer, "Renderer");
DsError.ThrowExceptionForHR(hr);
pRenderIn = DsFindPin.ByDirection(pRenderer, PinDirection.Input, 0);
// Add the sample grabber to the graph
hr = m_FilterGraph.AddFilter(baseGrabFlt, "Ds.NET Grabber");
DsError.ThrowExceptionForHR(hr);
/*if (m_VidControl == null)
* {
* // Connect the Still pin to the sample grabber
* hr = m_FilterGraph.Connect(m_pinStill, pSampleIn);
* DsError.ThrowExceptionForHR(hr);
*
* // Connect the capture pin to the renderer
* hr = m_FilterGraph.Connect(pCaptureOut, pRenderIn);
* DsError.ThrowExceptionForHR(hr);
* }
* else
* {
* // Connect the capture pin to the renderer
* hr = m_FilterGraph.Connect(pCaptureOut, pRenderIn);
* DsError.ThrowExceptionForHR(hr);
*
* // Connect the Still pin to the sample grabber
* hr = m_FilterGraph.Connect(m_pinStill, pSampleIn);
* DsError.ThrowExceptionForHR(hr);
* }*/
// Learn the video properties
//SaveSizeInfo(sampGrabber);
//ConfigVideoWindow(hControl);
// Start the graph
IMediaControl mediaCtrl = m_FilterGraph as IMediaControl;
hr = mediaCtrl.Run();
DsError.ThrowExceptionForHR(hr);
}
finally
{
if (sampGrabber != null)
{
Marshal.ReleaseComObject(sampGrabber);
sampGrabber = null;
}
if (pCaptureOut != null)
{
Marshal.ReleaseComObject(pCaptureOut);
pCaptureOut = null;
}
if (pRenderIn != null)
{
Marshal.ReleaseComObject(pRenderIn);
pRenderIn = null;
}
if (pSampleIn != null)
{
Marshal.ReleaseComObject(pSampleIn);
pSampleIn = null;
}
}
}
