public int GetCurFile(out string pszFileName, AMMediaType pmt)
{
pszFileName = m_sFileName;
if (pmt != null)
{
pmt.Set(Pins[0].CurrentMediaType);
}
return(NOERROR);
}
public override HRESULT GetMediaType(int iPosition, ref AMMediaType pmt)
{
if (iPosition == 0)
{
pmt.Set(_pmt);
return(NOERROR);
}
return(VFW_S_NO_MORE_ITEMS);
}
public override HRESULT GetMediaType(int iPosition, ref AMMediaType pmt)
{
if (iPosition < 0)
{
return(E_INVALIDARG);
}
if (iPosition > 0)
{
return(VFW_S_NO_MORE_ITEMS);
}
pmt.Set(m_mt);
return(NOERROR);
}
public int GetMediaType(int iPosition, ref AMMediaType pMediaType)
{
if (iPosition < 0)
{
return(E_INVALIDARG);
}
VideoStreamConfigCaps _caps;
GetDefaultCaps(0, out _caps);
int nWidth = 0;
int nHeight = 0;
if (iPosition == 0)
{
if (Pins.Count > 0 && Pins[0].CurrentMediaType.majorType == MediaType.Video)
{
pMediaType.Set(Pins[0].CurrentMediaType);
return(NOERROR);
}
nWidth = _caps.InputSize.Width;
nHeight = _caps.InputSize.Height;
}
else
{
iPosition--;
nWidth = _caps.MinOutputSize.Width + _caps.OutputGranularityX * iPosition;
nHeight = _caps.MinOutputSize.Height + _caps.OutputGranularityY * iPosition;
if (nWidth > _caps.MaxOutputSize.Width || nHeight > _caps.MaxOutputSize.Height)
{
return(VFW_S_NO_MORE_ITEMS);
}
}
pMediaType.majorType = DirectShow.MediaType.Video;
pMediaType.formatType = DirectShow.FormatType.VideoInfo;
VideoInfoHeader vih = new VideoInfoHeader();
vih.AvgTimePerFrame = m_nAvgTimePerFrame;
vih.BmiHeader.Compression = BI_RGB;
vih.BmiHeader.BitCount = (short)m_nBitCount;
vih.BmiHeader.Width = nWidth;
vih.BmiHeader.Height = nHeight;
vih.BmiHeader.Planes = 1;
vih.BmiHeader.ImageSize = vih.BmiHeader.Width * Math.Abs(vih.BmiHeader.Height) * vih.BmiHeader.BitCount / 8;
if (vih.BmiHeader.BitCount == 32)
{
pMediaType.subType = DirectShow.MediaSubType.RGB32;
}
if (vih.BmiHeader.BitCount == 24)
{
pMediaType.subType = DirectShow.MediaSubType.RGB24;
}
AMMediaType.SetFormat(ref pMediaType, ref vih);
pMediaType.fixedSizeSamples = true;
pMediaType.sampleSize = vih.BmiHeader.ImageSize;
return(NOERROR);
}
public override HRESULT GetMediaType(int iPosition, ref AMMediaType pmt)
{
pmt.Set(this.pmt);
return(NOERROR);
}
