protected virtual void InsertAudioFilter(IBaseFilter sourceFilter, string audioDecoder)
{
if (string.IsNullOrEmpty(audioDecoder))
{
return;
}
// Set Audio Codec
// Remove Pin
var audioPinFrom = DirectShowLib.DsFindPin.ByName(sourceFilter, "Audio");
IPin audioPinTo;
if (audioPinFrom != null)
{
int hr = audioPinFrom.ConnectedTo(out audioPinTo);
if (hr >= 0 && audioPinTo != null)
{
PinInfo pInfo;
audioPinTo.QueryPinInfo(out pInfo);
FilterInfo fInfo;
pInfo.filter.QueryFilterInfo(out fInfo);
DirectShowUtil.DisconnectAllPins(m_graph, pInfo.filter);
m_graph.RemoveFilter(pInfo.filter);
DsUtils.FreePinInfo(pInfo);
Marshal.ReleaseComObject(fInfo.pGraph);
Marshal.ReleaseComObject(audioPinTo);
audioPinTo = null;
}
Marshal.ReleaseComObject(audioPinFrom);
audioPinFrom = null;
}
DirectShowUtil.AddFilterToGraph(m_graph, audioDecoder, Guid.Empty);
}
/// <summary>
/// Opens the media by initializing the DirectShow graph
/// </summary>
protected virtual void OpenSource()
{
/* Make sure we clean up any remaining mess */
FreeResources();
if (m_sourceUri == null)
{
return;
}
string fileSource = m_sourceUri.OriginalString;
if (string.IsNullOrEmpty(fileSource))
{
return;
}
try
{
/* Creates the GraphBuilder COM object */
m_graph = new FilterGraphNoThread() as IGraphBuilder;
if (m_graph == null)
{
throw new Exception("Could not create a graph");
}
var filterGraph = m_graph as IFilterGraph2;
if (filterGraph == null)
{
throw new Exception("Could not QueryInterface for the IFilterGraph2");
}
IBaseFilter sourceFilter;
int hr;
//var file = System.IO.File.CreateText(@"M:\DirectShowLog.txt");
//filterGraph.SetLogFile((file.BaseStream as System.IO.FileStream).SafeFileHandle.DangerousGetHandle());
// Set LAV Splitter
LAVSplitterSource reader = new LAVSplitterSource();
sourceFilter = reader as IBaseFilter;
var objectWithSite = reader as IObjectWithSite;
if (objectWithSite != null)
{
objectWithSite.SetSite(this);
}
hr = m_graph.AddFilter(sourceFilter, SplitterSource);
DsError.ThrowExceptionForHR(hr);
IFileSourceFilter interfaceFile = (IFileSourceFilter)sourceFilter;
hr = interfaceFile.Load(fileSource, null);
DsError.ThrowExceptionForHR(hr);
// Set Video Codec
// Remove Pin
var videoPinFrom = DirectShowLib.DsFindPin.ByName(sourceFilter, "Video");
IPin videoPinTo;
if (videoPinFrom != null)
{
hr = videoPinFrom.ConnectedTo(out videoPinTo);
if (hr >= 0 && videoPinTo != null)
{
PinInfo pInfo;
videoPinTo.QueryPinInfo(out pInfo);
FilterInfo fInfo;
pInfo.filter.QueryFilterInfo(out fInfo);
DirectShowUtil.DisconnectAllPins(m_graph, pInfo.filter);
m_graph.RemoveFilter(pInfo.filter);
DsUtils.FreePinInfo(pInfo);
Marshal.ReleaseComObject(fInfo.pGraph);
Marshal.ReleaseComObject(videoPinTo);
videoPinTo = null;
}
Marshal.ReleaseComObject(videoPinFrom);
videoPinFrom = null;
}
DirectShowUtil.AddFilterToGraph(m_graph, VideoDecoder, Guid.Empty);
// Set Audio Codec
// Remove Pin
var audioPinFrom = DirectShowLib.DsFindPin.ByName(sourceFilter, "Audio");
IPin audioPinTo;
if (audioPinFrom != null)
{
hr = audioPinFrom.ConnectedTo(out audioPinTo);
if (hr >= 0 && audioPinTo != null)
{
PinInfo pInfo;
audioPinTo.QueryPinInfo(out pInfo);
FilterInfo fInfo;
pInfo.filter.QueryFilterInfo(out fInfo);
DirectShowUtil.DisconnectAllPins(m_graph, pInfo.filter);
m_graph.RemoveFilter(pInfo.filter);
DsUtils.FreePinInfo(pInfo);
Marshal.ReleaseComObject(fInfo.pGraph);
Marshal.ReleaseComObject(audioPinTo);
audioPinTo = null;
}
Marshal.ReleaseComObject(audioPinFrom);
audioPinFrom = null;
}
DirectShowUtil.AddFilterToGraph(m_graph, AudioDecoder, Guid.Empty);
/* Add our prefered audio renderer */
InsertAudioRenderer(AudioRenderer);
IBaseFilter renderer = CreateVideoRenderer(VideoRenderer, m_graph, 2);
/* We will want to enum all the pins on the source filter */
IEnumPins pinEnum;
hr = sourceFilter.EnumPins(out pinEnum);
DsError.ThrowExceptionForHR(hr);
IntPtr fetched = IntPtr.Zero;
IPin[] pins = { null };
/* Counter for how many pins successfully rendered */
int pinsRendered = 0;
if (VideoRenderer == VideoRendererType.VideoMixingRenderer9)
{
var mixer = renderer as IVMRMixerControl9;
if (mixer != null)
{
VMR9MixerPrefs dwPrefs;
mixer.GetMixingPrefs(out dwPrefs);
dwPrefs &= ~VMR9MixerPrefs.RenderTargetMask;
dwPrefs |= VMR9MixerPrefs.RenderTargetRGB;
//mixer.SetMixingPrefs(dwPrefs);
}
}
/* Test using FFDShow Video Decoder Filter
* var ffdshow = new FFDShow() as IBaseFilter;
*
* if (ffdshow != null)
* m_graph.AddFilter(ffdshow, "ffdshow");
*/
/* Loop over each pin of the source filter */
while (pinEnum.Next(pins.Length, pins, fetched) == 0)
{
if (filterGraph.RenderEx(pins[0],
AMRenderExFlags.RenderToExistingRenderers,
IntPtr.Zero) >= 0)
{
pinsRendered++;
}
Marshal.ReleaseComObject(pins[0]);
}
Marshal.ReleaseComObject(pinEnum);
Marshal.ReleaseComObject(sourceFilter);
if (pinsRendered == 0)
{
throw new Exception("Could not render any streams from the source Uri");
}
#if DEBUG
/* Adds the GB to the ROT so we can view
* it in graphedit */
m_dsRotEntry = new DsROTEntry(m_graph);
#endif
/* Configure the graph in the base class */
SetupFilterGraph(m_graph);
HasVideo = true;
/* Sets the NaturalVideoWidth/Height */
//SetNativePixelSizes(renderer);
}
catch (Exception ex)
{
/* This exection will happen usually if the media does
* not exist or could not open due to not having the
* proper filters installed */
FreeResources();
/* Fire our failed event */
InvokeMediaFailed(new MediaFailedEventArgs(ex.Message, ex));
}
InvokeMediaOpened();
}
/// <summary>
/// Opens the media by initializing the DirectShow graph
/// </summary>
protected virtual void OpenSource()
{
/* Make sure we clean up any remaining mess */
FreeResources();
string fileSource = FileSource;
if (string.IsNullOrEmpty(fileSource))
{
return;
}
try
{
/* Creates the GraphBuilder COM object */
m_graph = new FilterGraphNoThread() as IGraphBuilder;
if (m_graph == null)
{
throw new WPFMediaKitException("Could not create a graph");
}
var filterGraph = m_graph as IFilterGraph2;
if (filterGraph == null)
{
throw new WPFMediaKitException("Could not QueryInterface for the IFilterGraph2");
}
IBaseFilter sourceFilter;
int hr;
// Set LAV Splitter
/* LAVSplitterSource reader = new LAVSplitterSource();
* sourceFilter = reader as IBaseFilter;
* var objectWithSite = reader as IObjectWithSite;
* if (objectWithSite != null)
* {
* objectWithSite.SetSite(this);
* }
*
*
* hr = m_graph.AddFilter(sourceFilter, SplitterSource);
* DsError.ThrowExceptionForHR(hr);*/
sourceFilter = DirectShowUtil.AddFilterToGraph(m_graph, SplitterSource, Guid.Empty);
if (sourceFilter == null)
{
throw new WPFMediaKitException("Could not add SplitterSource to graph.");
}
IFileSourceFilter interfaceFile = (IFileSourceFilter)sourceFilter;
hr = interfaceFile.Load(fileSource, null);
DsError.ThrowExceptionForHR(hr);
// Set Video Codec
// Remove Pin
var videoPinFrom = DirectShowLib.DsFindPin.ByName(sourceFilter, "Video");
IPin videoPinTo;
if (videoPinFrom != null)
{
hr = videoPinFrom.ConnectedTo(out videoPinTo);
if (hr >= 0 && videoPinTo != null)
{
PinInfo pInfo;
videoPinTo.QueryPinInfo(out pInfo);
FilterInfo fInfo;
pInfo.filter.QueryFilterInfo(out fInfo);
DirectShowUtil.DisconnectAllPins(m_graph, pInfo.filter);
m_graph.RemoveFilter(pInfo.filter);
DsUtils.FreePinInfo(pInfo);
Marshal.ReleaseComObject(fInfo.pGraph);
Marshal.ReleaseComObject(videoPinTo);
videoPinTo = null;
}
Marshal.ReleaseComObject(videoPinFrom);
videoPinFrom = null;
HasVideo = true;
}
else
{
HasVideo = false;
}
DirectShowUtil.AddFilterToGraph(m_graph, VideoDecoder, Guid.Empty);
try
{
// use preffered audio filter
InsertAudioFilter(sourceFilter, AudioDecoder);
}
catch (Exception ex)
{
// codecs misconfigured
log.Error(ex, "Cannot add audio decoder: {0}", AudioDecoder);
}
// use prefered audio renderer
try
{
InsertAudioRenderer(AudioRenderer);
}
catch (Exception ex)
{
log.Error(ex, "Cannot add audio render: {0}", AudioRenderer);
}
IBaseFilter renderer = CreateVideoRenderer(VideoRenderer, m_graph, 2);
/* We will want to enum all the pins on the source filter */
IEnumPins pinEnum;
hr = sourceFilter.EnumPins(out pinEnum);
DsError.ThrowExceptionForHR(hr);
IntPtr fetched = IntPtr.Zero;
IPin[] pins = { null };
/* Counter for how many pins successfully rendered */
int pinsRendered = 0;
if (VideoRenderer == VideoRendererType.VideoMixingRenderer9)
{
var mixer = renderer as IVMRMixerControl9;
if (mixer != null)
{
VMR9MixerPrefs dwPrefs;
mixer.GetMixingPrefs(out dwPrefs);
dwPrefs &= ~VMR9MixerPrefs.RenderTargetMask;
dwPrefs |= VMR9MixerPrefs.RenderTargetRGB;
//mixer.SetMixingPrefs(dwPrefs);
}
}
/* Loop over each pin of the source filter */
while (pinEnum.Next(pins.Length, pins, fetched) == 0)
{
if (filterGraph.RenderEx(pins[0],
AMRenderExFlags.RenderToExistingRenderers,
IntPtr.Zero) >= 0)
{
pinsRendered++;
}
Marshal.ReleaseComObject(pins[0]);
}
Marshal.ReleaseComObject(pinEnum);
Marshal.ReleaseComObject(sourceFilter);
if (pinsRendered == 0)
{
throw new WPFMediaKitException("Could not render any streams from the source Uri");
}
#if DEBUG
/* Adds the GB to the ROT so we can view
* it in graphedit */
m_dsRotEntry = new DsROTEntry(m_graph);
#endif
/* Configure the graph in the base class */
SetupFilterGraph(m_graph);
}
catch (Exception ex)
{
/* This exection will happen usually if the media does
* not exist or could not open due to not having the
* proper filters installed */
// Fallback try auto graph:
var result = oldOpenSource();
if (!result)
{
FreeResources();
HasVideo = false;
/* Fire our failed event */
InvokeMediaFailed(new MediaFailedEventArgs(ex.Message, ex));
return;
}
}
InvokeMediaOpened();
}
private bool DoesItHaveVideo(string filename)
{
if (string.IsNullOrEmpty(filename))
{
return(false);
}
bool result;
IGraphBuilder temp_graph = new FilterGraphNoThread() as IGraphBuilder;
try
{
if (temp_graph == null)
{
throw new WPFMediaKitException("Could not create a graph");
}
var filterGraph = temp_graph as IFilterGraph2;
if (filterGraph == null)
{
throw new WPFMediaKitException("Could not QueryInterface for the IFilterGraph2");
}
IBaseFilter sourceFilter;
int hr;
sourceFilter = DirectShowUtil.AddFilterToGraph(temp_graph, SplitterSource, LAVFilterDirectory, Guid.Empty);
if (sourceFilter == null)
{
throw new WPFMediaKitException("Could not add SplitterSource to graph.");
}
IFileSourceFilter interfaceFile = (IFileSourceFilter)sourceFilter;
hr = interfaceFile.Load(filename, null);
DsError.ThrowExceptionForHR(hr);
// Set Video Codec
// Remove Pin
var videoPinFrom = DirectShowLib.DsFindPin.ByName(sourceFilter, "Video");
IPin videoPinTo;
if (videoPinFrom != null)
{
hr = videoPinFrom.ConnectedTo(out videoPinTo);
if (hr >= 0 && videoPinTo != null)
{
PinInfo pInfo;
videoPinTo.QueryPinInfo(out pInfo);
FilterInfo fInfo;
pInfo.filter.QueryFilterInfo(out fInfo);
DirectShowUtil.DisconnectAllPins(temp_graph, pInfo.filter);
temp_graph.RemoveFilter(pInfo.filter);
DsUtils.FreePinInfo(pInfo);
Marshal.ReleaseComObject(fInfo.pGraph);
Marshal.ReleaseComObject(videoPinTo);
videoPinTo = null;
}
Marshal.ReleaseComObject(videoPinFrom);
videoPinFrom = null;
result = true;
}
else
{
result = false;
}
DirectShowUtil.RemoveFilters(temp_graph, SplitterSource.Name);
Marshal.FinalReleaseComObject(sourceFilter);
}
catch
{ result = false; }
finally
{
Marshal.ReleaseComObject(temp_graph);
}
return(result);
}