public VideoCompressorQualityInfo(VideoCompressorQualityInfo vcqi) :
this(vcqi.MediaSubType, vcqi.BitRate, vcqi.KeyFrameRate, vcqi.Quality){}
private void ConfigureWMEncoder(VideoCompressorQualityInfo vcqi)
{
//
// Note: Configure compressor before setting private data
//
IPropertyBag iPB = (IPropertyBag)filter;
object o = 1; // 1 == Live, can be obtained from IWMCodecProps.GetCodecProp(WM9PropList.g_wszWMVCComplexityExLive)
iPB.Write(WM9PropList.g_wszWMVCComplexityEx, ref o);
if(vcqi.KeyFrameRate != VideoCompressorQualityInfo.KeyFrameRateDefault)
{
o = vcqi.KeyFrameRate;
iPB.Write(WM9PropList.g_wszWMVCKeyframeDistance, ref o);
}
// // More configuration possibilities
// o = 0;
// iPB.Write(WM9PropList.g_wszWMVCComplexityMode, ref o);
//
// o = 0;
// iPB.Write(WM9PropList.g_wszWMVCCrisp, ref o);
//
// o = "MP";
// iPB.Write(WM9PropList.g_wszWMVCDecoderComplexityRequested, ref o);
//
// o = 10000;
// iPB.Write(WM9PropList.g_wszWMVCVideoWindow, ref o);
//
// o = true;
// iPB.Write(WM9PropList.g_wszWMVCVBREnabled, ref o);
//
// Set Private Data
//
IWMCodecPrivateData iPD = (IWMCodecPrivateData)filter;
iPD.SetPartialOutputType(ref mt);
uint cbData = 0;
iPD.GetPrivateData(IntPtr.Zero, ref cbData);
if(cbData != 0)
{
int vihSize = Marshal.SizeOf(vih);
// Allocate space for video info header + private data
IntPtr vipd = Marshal.AllocCoTaskMem(vihSize + (int)cbData);
// Copy vih into place
Marshal.StructureToPtr(vih, vipd, false);
// Fill in private data
iPD.GetPrivateData(new IntPtr(vipd.ToInt32() + vihSize), ref cbData);
// Reset it
MediaType.Free(ref mt); // Clean it up, so we can reuse it
mt.pbFormat = vipd;
mt.cbFormat = (uint)vihSize + cbData;
}
}
private void ConfigureCompressor(VideoCompressorQualityInfo vcqi)
{
// This method is called after the compressor is connected to the
// source filter, so that the media types and format blocks contain
// useable information.
_AMMediaType[] mts;
object[] fbs;
GetMediaTypes(out mts, out fbs);
for(int i = 0; i < mts.Length; i++)
{
if(mts[i].subtype == vcqi.MediaSubType)
{
mt = mts[i];
vih = (VIDEOINFOHEADER)fbs[i];
break;
}
}
if (mt.subtype != vcqi.MediaSubType) {
//If we are using non-standard codecs, there may not be a match.
//PRI2: Some compressors will likely need to be configured using their own custom tools or dialogs, or will require special case subclasses.
return;
}
Debug.Assert(mt.subtype == vcqi.MediaSubType);
// Configure the bit rate - .Net makes a copy of fb
vih.BitRate = vcqi.BitRate;
// Update the structure in memory with what we have
mt = MediaType.Construct(mt, vih);
// Allow compressor specific configuration
// e.g. WM9+ requires extra configuration, others may as well
CompressorSpecificConfiguration(vcqi);
// Use the structure in the compressor - this will free the format
// block when it is done.
try {
//This was observed to fail for some non-standard compressors.
SetMediaType(ref mt);
}
catch (Exception ex) {
Trace.WriteLine("Failed to set video compressor MediaType: " + ex.ToString());
}
// Check for other video compression settings
IAMVideoCompression iVC = OutputPin as IAMVideoCompression;
if(iVC != null)
{
// WMV9 and WMVAdv don't work well if you modify them this way
if (FriendlyName != "WMVideo8 Encoder DMO" &&
FriendlyName != "WMVideo9 Encoder DMO")
{
try {
iVC.put_KeyFrameRate(vcqi.KeyFrameRate);
iVC.put_Quality(vcqi.Quality);
}
catch(Exception ex) {
Trace.WriteLine("Failed to set video compressor quality: " + ex.ToString());
}
}
}
CompressorDiagnostics("After setting media type");
}
private void CompressorSpecificConfiguration(VideoCompressorQualityInfo vcqi)
{
// ------------------------------------------------------------------------------------
// Very specific to the WM9+ codec
// Must come after setting the VideoInfo properties in order to get the "correct" private data
// ------------------------------------------------------------------------------------
if (FriendlyName == "WMVideo8 Encoder DMO" ||
FriendlyName == "WMVideo9 Encoder DMO")
{
ConfigureWMEncoder(vcqi);
}
//
// Add your compressor specific configuration needs here
//
}
private void ConfigureCompressor(VideoCompressorQualityInfo vcqi)
{
// This method is called after the compressor is connected to the
// source filter, so that the media types and format blocks contain
// useable information.
_AMMediaType[] mts;
object[] fbs;
GetMediaTypes(out mts, out fbs);
for(int i = 0; i < mts.Length; i++)
{
if(mts[i].subtype == vcqi.MediaSubType)
{
mt = mts[i];
vih = (VIDEOINFOHEADER)fbs[i];
break;
}
}
Debug.Assert(mt.subtype == vcqi.MediaSubType);
// Configure the bit rate - .Net makes a copy of fb
vih.BitRate = vcqi.BitRate;
// Update the structure in memory with what we have
mt = MediaType.Construct(mt, vih);
// Allow compressor specific configuration
// e.g. WM9+ requires extra configuration, others may as well
CompressorSpecificConfiguration(vcqi);
// Use the structure in the compressor - this will free the format
// block when it is done
SetMediaType(ref mt);
// Check for other video compression settings
IAMVideoCompression iVC = OutputPin as IAMVideoCompression;
if(iVC != null)
{
// WMV9 and WMVAdv don't work well if you modify them this way
if (FriendlyName != "WMVideo8 Encoder DMO" &&
FriendlyName != "WMVideo9 Encoder DMO")
{
iVC.put_KeyFrameRate(vcqi.KeyFrameRate);
iVC.put_Quality(vcqi.Quality);
}
}
CompressorDiagnostics("After setting media type");
}
