private IBaseFilter ConfigAsf(ICaptureGraphBuilder2 capGraph,
string szOutputFileName,
CaptureOptions.VideoCompression quality)
{
IFileSinkFilter pTmpSink = null;
IBaseFilter asfWriter = null;
int hr = capGraph.SetOutputFileName(MediaSubType.Asf, szOutputFileName, out asfWriter, out pTmpSink);
Marshal.ThrowExceptionForHR(hr);
try
{
IConfigAsfWriter lConfig = (IConfigAsfWriter)asfWriter;
string profileData;
int bitRate;
switch (quality)
{
case CaptureOptions.VideoCompression.MinimalSize:
bitRate = (int)(1000000.0 * (_inFrameWidth * _inFrameHeight * _FPS) / (720 * 1280 * 25));
break;
case CaptureOptions.VideoCompression.Optimal:
bitRate = (int)(2000000.0 * (_inFrameWidth * _inFrameHeight * _FPS) / (720 * 1280 * 25));
break;
case CaptureOptions.VideoCompression.BestQuality:
bitRate = (int)(4000000.0 * (_inFrameWidth * _inFrameHeight * _FPS) / (720 * 1280 * 25));
break;
default:
throw new ApplicationException("Internal error: unknown type of the required video codec");
}
//Getting XML with profile.
using (var reader = new StreamReader(Path.Combine(Directories.GetConfigDirectory(), "Encoder.prx")))
{
profileData = reader.ReadToEnd();
}
profileData = profileData.Replace("__FRAME_WIDTH__", _inFrameWidth.ToString());
profileData = profileData.Replace("__FRAME_HEIGHT__", _inFrameHeight.ToString());
profileData = profileData.Replace("__BIT_RATE__", bitRate.ToString());
// Get manager
IWMProfileManager profileManager;
WMUtils.WMCreateProfileManager(out profileManager);
// Create profile
IWMProfile profile;
profileManager.LoadProfileByData(profileData, out profile);
lConfig.ConfigureFilterUsingProfile(profile);
}
finally
{
Marshal.ReleaseComObject(pTmpSink);
}
return(asfWriter);
}
/// <summary>
/// Configures the WM ASF Writer filter. (populates member variables as well)
/// </summary>
protected void ConfigureWriterFilter()
{
IWMProfile profile = GetWMProfile(CurrentProfile);
WindowsMediaLib.IConfigAsfWriter configAsf = (WindowsMediaLib.IConfigAsfWriter)_asfFilter;
configAsf.ConfigureFilterUsingProfile(profile);
//Retreive the IWMWriter* objects from the WM ASF Writer filter.
_writerAdvanced = GetWriterAdvanced();
_writer = (IWMWriter)_writerAdvanced;
//The WM ASF Writer comes with a File-Writer-Sink, which we need to remove.
RemoveAllSinks(_writerAdvanced);
//set SourceConfig settings
_writerAdvanced.SetSyncTolerance(SourceConfig.SyncToleranceMilliseconds);
_writerAdvanced.SetLiveSource(SourceConfig.LiveSource);
}
void ConfigureASFWriter(WMAsfWriter asf_filter, WTVStreamingVideoRequest strq, FrameSize SourceFrameSize)
{
int hr;
// Now it's added to the graph, configure it with the selected WM Profile
SendDebugMessage("Getting WM profile with quality of " + strq.Quality.ToString(), 0);
WindowsMediaLib.IWMProfileManager profileManager;
WMUtils.WMCreateProfileManager(out profileManager);
IWMProfile wmProfile;
string txtPrxProfile = getPRXProfileForQuality(strq.Quality);
if (!(string.IsNullOrEmpty(txtPrxProfile)))
{
SendDebugMessage("Adjusting WM profile to fit video within designated frame size", 0);
// SET VIDEO SIZE TO FIT WITHIN THE RIGHT FRAME
SendDebugMessage("Source video size is " + SourceFrameSize.ToString(), 0);
FrameSize containerSize = frameSizeForStreamRequest(strq);
SendDebugMessage("Container size is " + containerSize.ToString(), 0);
FrameSize newVideoSize = new FrameSize(SourceFrameSize, containerSize);
SendDebugMessage("Output size is " + newVideoSize.ToString(), 0);
SetProfileFrameSize(ref txtPrxProfile, newVideoSize);
SetProfileCustomSettings(ref txtPrxProfile, ref strq); // returns immediately if not custom quality
SendDebugMessage("Configuring ASF Writer with profile", 0);
profileManager.LoadProfileByData(txtPrxProfile, out wmProfile);
WindowsMediaLib.IConfigAsfWriter configWriter = (WindowsMediaLib.IConfigAsfWriter)asf_filter;
configWriter.ConfigureFilterUsingProfile(wmProfile);
configWriter.SetIndexMode(true); // yes index - DEFAULT
/* Additional config - TEST
* //DirectShowLib.IConfigAsfWriter2 configAsfWriter2 = (DirectShowLib.IConfigAsfWriter2)asf_filter;
* //configAsfWriter2.SetParam(ASFWriterConfig.AutoIndex, 0, 0); // IT IS DEFAULT */
// (NOT WORKING)
// SET ANAMORPHIC VIDEO MARKERS WITHIN STREAM (ASPECT RATIO) *******************************
UInt32 uiAspectX = (UInt32)SourceFrameSize.Width;
byte[] bAspectX = BitConverter.GetBytes(uiAspectX);
UInt32 uiAspectY = (UInt32)SourceFrameSize.Height;
byte[] bAspectY = BitConverter.GetBytes(uiAspectY);
DirectShowLib.IServiceProvider pServiceProvider; // http://msdn.microsoft.com/en-us/library/dd390985%28VS.85%29.aspx
pServiceProvider = (DirectShowLib.IServiceProvider)asf_filter;
DsGuid dsgIWMHeaderinfo = DsGuid.FromGuid(new Guid(GUIDs.IWMWriterAdvanced2));
object o3 = null;
hr = pServiceProvider.QueryService(dsgIWMHeaderinfo, dsgIWMHeaderinfo, out o3); // FAILS IN A STA THREAD
DsError.ThrowExceptionForHR(hr);
IWMHeaderInfo headerinfo = (IWMHeaderInfo)o3;
// Get access to WMwriterAdvanced2 object using pServiceProvider (poss not futureproof) (see http://groups.google.com/group/microsoft.public.win32.programmer.directx.video/browse_thread/thread/36b154d41cb76ffd/c571d6ef56de11af?#c571d6ef56de11af )
DsGuid dsgWMwriterAdvanced2 = DsGuid.FromGuid(new Guid(GUIDs.IWMWriterAdvanced2));
object o = null;
hr = pServiceProvider.QueryService(dsgWMwriterAdvanced2, dsgWMwriterAdvanced2, out o); // FAILS IN A STA THREAD
DsError.ThrowExceptionForHR(hr);
IWMWriterAdvanced2 WMWriterAdvanced2 = null;
WMWriterAdvanced2 = (IWMWriterAdvanced2)o;
// Get Access to IWMHeaderInfo3 through WMWriterAdvanced2
object o2 = null;
//pServiceProvider = (DirectShowLib.IServiceProvider)WMWriterAdvanced2;
DsGuid dsgIWMHeaderInfo3 = DsGuid.FromGuid(new Guid(GUIDs.IWMHeaderInfo3));
hr = pServiceProvider.QueryService(dsgWMwriterAdvanced2, dsgIWMHeaderInfo3, out o2); // LET'S SEE
DsError.ThrowExceptionForHR(hr);
IWMHeaderInfo3 WMHeaderInfo3 = null;
WMHeaderInfo3 = (IWMHeaderInfo3)o2;
short pwIndex;
// Add Aspect Ratio information
WMHeaderInfo3.AddAttribute(2, "AspectRatioX", out pwIndex, AttrDataType.DWORD, 0, bAspectX, bAspectX.Length);
WMHeaderInfo3.AddAttribute(2, "AspectRatioY", out pwIndex, AttrDataType.DWORD, 0, bAspectY, bAspectY.Length);
// Try with other interface too
headerinfo.SetAttribute(2, "AspectRatioX", AttrDataType.DWORD, bAspectX, Convert.ToInt16(bAspectX.Length));
headerinfo.SetAttribute(2, "AspectRatioY", AttrDataType.DWORD, bAspectY, Convert.ToInt16(bAspectY.Length));
// ************ DEINTERLACE (experimental)
if (strq.DeInterlaceMode > 0)
{
DeInterlaceModes dimode = DeInterlaceModes.WM_DM_NOTINTERLACED;
// Deinterlace Mode
if (strq.DeInterlaceMode == 1)
{
dimode = DeInterlaceModes.WM_DM_DEINTERLACE_NORMAL;
}
else if (strq.DeInterlaceMode == 2)
{
dimode = DeInterlaceModes.WM_DM_DEINTERLACE_HALFSIZE;
}
// Index of video pin
int pinIndex = FilterGraphTools.FindPinIndexByMediaType(currentOutputFilter, PinDirection.Input, MediaType.Video, MediaSubType.Null);
byte[] bDiMode = BitConverter.GetBytes((int)dimode);
short szOf = (short)bDiMode.Length;
// Set to use deinterlace mode
try
{
WMWriterAdvanced2.SetInputSetting(pinIndex, g_wszDeinterlaceMode, AttrDataType.DWORD, bDiMode, szOf);
}
catch (Exception ex)
{
SendDebugMessageWithException("Could not set interlace mode:", ex);
}
}
}
else
{
SendDebugMessage("Warning - PRX Profile string was empty; using default WM config.");
}
}