private void ConfigureCompressor()
{
// Have the compressor use the same height and width settings as the device
// Because these are structs that access their members through properties
// some of the properties (like BitmapInfo) are copied, so we work on the
// copy and then restore it at the end
BITMAPINFOHEADER bmih = cVI.BitmapInfo;
bmih.Width = SystemInformation.PrimaryMonitorSize.Width;
bmih.Height = SystemInformation.PrimaryMonitorSize.Height;
bmih.Size = (uint)Marshal.SizeOf(typeof(BITMAPINFOHEADER));
bmih.Planes = 1;
cVI.BitmapInfo = bmih;
// Configure the bit rate
cVI.BitRate = (uint)(hsbBitRate.Value * 1024); // Change to kilobits
// Update the structure in memory
Marshal.StructureToPtr(cVI, cMT.pbFormat, false);
// Allow compressor specific configuration
// e.g. WM9+ requires extra configuration, others may as well
ConfigureWMScreenEncoder();
Console.WriteLine(MediaType.Dump(cMT));
// Use the structure in the compressor
IAMStreamConfig iSC = (IAMStreamConfig)cOutputPin;
iSC.SetFormat(ref cMT);
IAMVideoCompression iVC = (IAMVideoCompression)cOutputPin;
}
public void DoTests()
{
// Get an audio device
m_ivc = GetCompressionFilter();
try
{
TestKeyFrameRate();
TestPFrames();
TestQuality();
TestWindow();
TestOverride();
TestGetInfo();
}
finally
{
Marshal.ReleaseComObject(m_ivc);
}
}
// Find an video compression filter
IAMVideoCompression GetCompressionFilter()
{
DsDevice [] capDevices;
IAMVideoCompression ifcd = null;
IBaseFilter ibf;
int x;
string s = "";
// Get the collection of video devices
capDevices = DsDevice.GetDevicesOfCat(FilterCategory.VideoCompressorCategory);
if (capDevices.Length == 0)
{
throw new Exception("No video compressors found!");
}
for (x = 0; x < capDevices.Length; x++)
{
DsDevice dev = capDevices[x];
dev.Mon.GetDisplayName(null, null, out s);
if (dev.Name == "Intel Indeo® Video 4.5") //"Microsoft Video 1")
{
break;
}
}
if (x >= capDevices.Length)
{
throw new Exception("can't find the video 1 filter");
}
ibf = Marshal.BindToMoniker(s) as IBaseFilter;
IPin outpin = DsFindPin.ByDirection(ibf, PinDirection.Output, 0);
ifcd = outpin as IAMVideoCompression;
return(ifcd);
}
private void GetIAMVideoCompression()
{
iVC = OutputPin as IAMVideoCompression;
if(iVC != null)
{
// See if it supports GetInfo
try
{
int pcbVersion = 0;
int pcbDescription = 0;
// Make the call to get the lengths of the strings
iVC.GetInfo(null, ref pcbVersion, null, ref pcbDescription,
out defaultKFR, out defaultPFPKF, out defaultQuality, out capabilities);
StringBuilder version = new StringBuilder(pcbVersion / 2);
StringBuilder description = new StringBuilder(pcbDescription / 2);
iVC.GetInfo(version, ref pcbVersion, description, ref pcbDescription,
out defaultKFR, out defaultPFPKF, out defaultQuality, out capabilities);
this.version = version.ToString();
this.description = description.ToString();
getInfo = true;
}
catch(NotImplementedException){}
// Windows Media lies about its capabilities, so we test them 1 by 1
if(capabilities == 0)
{
// Assume it CanCrunch
capabilities |= (int)CompressionCaps.CompressionCaps_CanCrunch;
try
{
int kfr;
iVC.get_KeyFrameRate(out kfr);
iVC.put_KeyFrameRate(kfr);
capabilities |= (int)CompressionCaps.CompressionCaps_CanKeyFrame;
}
catch(Exception){}
try
{
double quality;
iVC.get_Quality(out quality);
iVC.put_Quality(quality);
capabilities |= (int)CompressionCaps.CompressionCaps_CanQuality;
}
catch(Exception){}
try
{
int pfpkr;
iVC.get_PFramesPerKeyFrame(out pfpkr);
iVC.put_PFramesPerKeyFrame(pfpkr);
capabilities |= (int)CompressionCaps.CompressionCaps_CanBFrame;
}
catch(Exception){}
try
{
ulong windowSize;
iVC.get_WindowSize(out windowSize);
iVC.put_WindowSize(windowSize);
capabilities |= (int)CompressionCaps.CompressionCaps_CanWindow;
}
catch(Exception){}
}
}
}
private void CompressorDiagnostics(string msg)
{
#if CompressorDiagnostics
Trace.WriteLine(msg);
#region IAMVideoCompression
IAMVideoCompression iVC = null;
try
{
iVC = (IAMVideoCompression)cOutputPin;
}
catch(InvalidCastException)
{
Trace.WriteLine("Compressor does not support IAMVideoCompression");
}
if(iVC != null)
{
try
{
int pcbVersion = 0;
int pcbDescription = 0;
int defaultKFR, defaultPFPK, capabilities;
double defaultQuality;
// Make the call to get the lengths of the strings
iVC.GetInfo(null, ref pcbVersion, null, ref pcbDescription,
out defaultKFR, out defaultPFPK, out defaultQuality, out capabilities);
StringBuilder version = new StringBuilder(pcbVersion / 2);
StringBuilder description = new StringBuilder(pcbDescription / 2);
iVC.GetInfo(version, ref pcbVersion, description, ref pcbDescription,
out defaultKFR, out defaultPFPK, out defaultQuality, out capabilities);
Trace.WriteLine(version.ToString());
Trace.WriteLine(description.ToString());
Trace.WriteLine(defaultKFR);
Trace.WriteLine(defaultPFPK);
Trace.WriteLine(defaultQuality);
Trace.WriteLine(capabilities);
}
catch(NotImplementedException)
{
Trace.WriteLine("Compressor does not support IAMVideoCompression.GetInfo");
}
try
{
int kfr;
iVC.get_KeyFrameRate(out kfr);
Trace.WriteLine("KeyFrameRate: " + kfr);
}
catch(NotImplementedException)
{
Trace.WriteLine("Compressor does not support IAMVideoCompression.get_KeyFrameRate");
}
try
{
int pfpkf;
iVC.get_PFramesPerKeyFrame(out pfpkf);
Trace.WriteLine("PFramesPerKeyFrame: " + pfpkf);
}
catch(NotImplementedException)
{
Trace.WriteLine("Compressor does not support IAMVideoCompression.get_PFramesPerKeyFrame");
}
try
{
double q;
iVC.get_Quality(out q);
Trace.WriteLine("Quality: " + q);
}
catch(NotImplementedException)
{
Trace.WriteLine("Compressor does not support IAMVideoCompression.get_Quality");
}
try
{
ulong ws;
iVC.get_WindowSize(out ws);
Trace.WriteLine("WindowSize: " + ws);
}
catch(NotImplementedException)
{
Trace.WriteLine("Compressor does not support IAMVideoCompression.get_WindowSize");
}
}
#endregion IAMVideoCompression
#region Native Interfaces
#region IWMCodecLeakyBucket
IWMCodecLeakyBucket iCLB = (IWMCodecLeakyBucket)compressor;
uint bsb;
try
{
iCLB.GetBufferSizeBits(out bsb);
Trace.WriteLine("IWMCodecLeakyBucket.GetBufferSizeBits: " + bsb);
}
catch(COMException){}
#endregion IWMCodecLeakyBucket
// IWMCodecMetaData - not implemented by encoder in this version
// IWMCodecOutputTimestamp - not interesting
// IWMCodePrivateData - used when setting media type
#region IWMCodecProps
IWMCodecProps iCP = (IWMCodecProps)compressor;
WMT_PROP_DATATYPE dt;
uint expSize = 64, actSize;
IntPtr ipData = Marshal.AllocCoTaskMem((int)expSize);
try
{
actSize = expSize;
iCP.GetCodecProp(cVI.BitmapInfo.Compression, WM9PropList.g_wszWMCPCodecName, out dt, ipData, ref actSize);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IWMCodecProps.GetCodecProp.WMCPCodecName: {0}, DataType: {1}, ActualSize: {2}",
Marshal.PtrToStringUni(ipData).ToString(), dt.ToString(), actSize.ToString()));
}
catch(COMException){}
actSize = expSize;
iCP.GetCodecProp(cVI.BitmapInfo.Compression, WM9PropList.g_wszWMCPSupportedVBRModes, out dt, ipData, ref actSize);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IWMCodecProps.GetCodecProp.WMCPSupportedVBRModes: {0}, DataType: {1}, ActualSize: {2}",
Marshal.ReadInt32(ipData).ToString(), dt.ToString(), actSize.ToString()));
actSize = expSize;
iCP.GetCodecProp(cVI.BitmapInfo.Compression, WM9PropList.g_wszWMVCComplexityExLive, out dt, ipData, ref actSize);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IWMCodecProps.GetCodecProp.WMVCComplexityExLive: {0}, DataType: {1}, ActualSize: {2}",
Marshal.ReadInt32(ipData).ToString(), dt.ToString(), actSize.ToString()));
actSize = expSize;
iCP.GetCodecProp(cVI.BitmapInfo.Compression, WM9PropList.g_wszWMVCComplexityExMax, out dt, ipData, ref actSize);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IWMCodecProps.GetCodecProp.WMVCComplexityExMax: {0}, DataType: {1}, ActualSize: {2}",
Marshal.ReadInt32(ipData).ToString(), dt.ToString(), actSize.ToString()));
actSize = expSize;
iCP.GetCodecProp(cVI.BitmapInfo.Compression, WM9PropList.g_wszWMVCComplexityExOffline, out dt, ipData, ref actSize);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IWMCodecProps.GetCodecProp.WMVCComplexityExOffline: {0}, DataType: {1}, ActualSize: {2}",
Marshal.ReadInt32(ipData).ToString(), dt.ToString(), actSize.ToString()));
actSize = expSize;
iCP.GetCodecProp(cVI.BitmapInfo.Compression,WM9PropList. g_wszWMVCDefaultCrisp, out dt, ipData, ref actSize);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IWMCodecProps.GetCodecProp.WMVCDefaultCrisp: {0}, DataType: {1}, ActualSize: {2}",
Marshal.ReadInt32(ipData).ToString(), dt.ToString(), actSize.ToString()));
actSize = expSize;
iCP.GetCodecProp(cVI.BitmapInfo.Compression, WM9PropList.g_wszWMVCPassesRecommended, out dt, ipData, ref actSize);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IWMCodecProps.GetCodecProp.WMVCPassesRecommended: {0}, DataType: {1}, ActualSize: {2}",
Marshal.ReadInt32(ipData).ToString(), dt.ToString(), actSize.ToString()));
try
{
actSize = expSize;
iCP.GetFormatProp(ref cMT, WM9PropList.g_wszWMVCVBREnabled, out dt, ipData, ref actSize);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IWMCodecProps.GetCodecProp.WMVCVBREnabled: {0}, DataType: {1}, ActualSize: {2}",
Marshal.ReadInt32(ipData).ToString(), dt.ToString(), actSize.ToString()));
}
catch(System.NotImplementedException){}
try
{
actSize = expSize;
iCP.GetFormatProp(ref cMT, WM9PropList.g_wszWMVCVBRQuality , out dt, ipData, ref actSize);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IWMCodecProps.GetCodecProp.WMVCVBRQuality: {0}, DataType: {1}, ActualSize: {2}",
Marshal.ReadInt32(ipData).ToString(), dt.ToString(), actSize.ToString()));
}
catch(System.NotImplementedException){}
Marshal.FreeCoTaskMem(ipData);
#endregion IWMCodecProps
#region IWMCodecStrings
IWMCodecStrings iCS = (IWMCodecStrings)compressor;
StringBuilder sbData = new StringBuilder(128);
uint length;
iCS.GetName(ref cMT, 128, sbData, out length);
Trace.WriteLine("IWMCodecStrings.GetName: " + sbData.ToString());
iCS.GetDescription(ref cMT, 128, sbData, out length);
Trace.WriteLine("IWMCodecStrings.GetDescription: " + sbData.ToString());
#endregion IWMCodecStrings
// IWMVideoDecoderHurryup - is a decoder interface :-)
#endregion Native Interfaces
#region PropertyBag
IPropertyBag iPB = (IPropertyBag)compressor;
object o;
// VBR only
// try
// {
// iPB.RemoteRead(WM9PropList.g_wszWMVCAvgBitrate, out o, null, 0, null);
// Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCAvgBitrate: {0}", ((int)o).ToString()));
// }
// catch(COMException){}
try
{
iPB.RemoteRead(WM9PropList.g_wszWMVCAvgFrameRate, out o, null, 0, null);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCAvgFrameRate: {0}", ((double)o).ToString()));
}
catch(COMException){}
// VBR only
// try
// {
// iPB.RemoteRead(WM9PropList.g_wszWMVCBAvg, out o, null, 0, null);
// Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCBAvg: {0}", ((int)o).ToString()));
// }
// catch(COMException){}
// VBR only
// try
// {
// iPB.RemoteRead(WM9PropList.g_wszWMVCBMax, out o, null, 0, null);
// Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCBMax: {0}", ((int)o).ToString()));
// }
// catch(COMException){}
try
{
iPB.RemoteRead(WM9PropList.g_wszWMVCBufferFullnessInFirstByte, out o, null, 0, null);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCBufferFullnessInFirstByte: {0}", ((bool)o).ToString()));
}
catch(COMException){}
try
{
iPB.RemoteRead(WM9PropList.g_wszWMVCCodedFrames, out o, null, 0, null);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCCodedFrames: {0}", ((int)o).ToString()));
}
catch(COMException){}
// g_wszWMVCComplexityExLive - must use IWMCodecProps.GetCodecProp instead of IPropertyBag
// g_wszWMVCComplexityExMax - must use IWMCodecProps.GetCodecProp instead of IPropertyBag
// g_wszWMVCComplexityExOffline - must use IWMCodecProps.GetCodecProp instead of IPropertyBag
try
{
iPB.RemoteRead(WM9PropList.g_wszWMVCDecoderComplexityProfile, out o, null, 0, null);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCDecoderComplexityProfile: {0}", o.ToString()));
}
catch(COMException){}
try
{
iPB.RemoteRead(WM9PropList.g_wszWMVCDefaultCrisp, out o, null, 0, null);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCDefaultCrisp: {0}", o.ToString()));
}
catch(COMException){}
try
{
iPB.RemoteRead(WM9PropList.g_wszWMVCMaxBitrate, out o, null, 0, null);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCMaxBitrate: {0}", ((int)o).ToString()));
}
catch(COMException){}
try
{
iPB.RemoteRead(WM9PropList.g_wszWMVCPassesRecommended, out o, null, 0, null);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCPassesRecommended: {0}", ((int)o).ToString()));
}
catch(COMException){}
try
{
iPB.RemoteRead(WM9PropList.g_wszWMVCPassesUsed, out o, null, 0, null);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCPassesUsed: {0}", ((int)o).ToString()));
}
catch(COMException){}
try
{
iPB.RemoteRead(WM9PropList.g_wszWMVCTotalFrames, out o, null, 0, null);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCTotalFrames: {0}", ((int)o).ToString()));
}
catch(COMException){}
try
{
iPB.RemoteRead(WM9PropList.g_wszWMVCVBREnabled, out o, null, 0, null);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCVBREnabled: {0}", ((bool)o).ToString()));
}
catch(COMException){}
try
{
iPB.RemoteRead(WM9PropList.g_wszWMVCZeroByteFrames, out o, null, 0, null);
Trace.WriteLine(string.Format(CultureInfo.CurrentCulture, "IPropertyBag.g_wszWMVCZeroByteFrames: {0}", ((int)o).ToString()));
}
catch(COMException){}
#endregion PropertyBag
#endif
}
