public int GetDefaultCaps(int nIndex, out VideoStreamConfigCaps _caps)
{
_caps = new VideoStreamConfigCaps();
_caps.guid = FormatType.VideoInfo;
_caps.VideoStandard = AnalogVideoStandard.None;
_caps.InputSize.Width = c_iDefaultWidth;
_caps.InputSize.Height = c_iDefaultHeight;
_caps.MinCroppingSize.Width = c_nMinWidth;
_caps.MinCroppingSize.Height = c_nMinHeight;
_caps.MaxCroppingSize.Width = c_nMaxWidth;
_caps.MaxCroppingSize.Height = c_nMaxHeight;
_caps.CropGranularityX = c_nGranularityW;
_caps.CropGranularityY = c_nGranularityH;
_caps.CropAlignX = 0;
_caps.CropAlignY = 0;
_caps.MinOutputSize.Width = _caps.MinCroppingSize.Width;
_caps.MinOutputSize.Height = _caps.MinCroppingSize.Height;
_caps.MaxOutputSize.Width = _caps.MaxCroppingSize.Width;
_caps.MaxOutputSize.Height = _caps.MaxCroppingSize.Height;
_caps.OutputGranularityX = _caps.CropGranularityX;
_caps.OutputGranularityY = _caps.CropGranularityY;
_caps.StretchTapsX = 0;
_caps.StretchTapsY = 0;
_caps.ShrinkTapsX = 0;
_caps.ShrinkTapsY = 0;
_caps.MinFrameInterval = UNITS / c_nMaxFPS;
_caps.MaxFrameInterval = UNITS / c_nMinFPS;
_caps.MinBitsPerSecond = (_caps.MinOutputSize.Width * _caps.MinOutputSize.Height * c_nDefaultBitCount) * c_nMinFPS;
_caps.MaxBitsPerSecond = (_caps.MaxOutputSize.Width * _caps.MaxOutputSize.Height * c_nDefaultBitCount) * c_nMaxFPS;
return NOERROR;
}
public int GetStreamCaps(int iIndex,out AMMediaType ppmt, out VideoStreamConfigCaps _caps)
{
ppmt = null;
_caps = null;
if (iIndex < 0) return E_INVALIDARG;
ppmt = new AMMediaType();
HRESULT hr = (HRESULT)GetMediaType(iIndex, ref ppmt);
if (FAILED(hr)) return hr;
if (hr == VFW_S_NO_MORE_ITEMS) return S_FALSE;
hr = (HRESULT)GetDefaultCaps(iIndex, out _caps);
return hr;
}
public int GetDefaultCaps(int nIndex, out VideoStreamConfigCaps caps)
{
caps = new VideoStreamConfigCaps
{
guid = FormatType.VideoInfo,
VideoStandard = AnalogVideoStandard.None,
InputSize =
{
Width = _width,
Height = _height
},
MinCroppingSize =
{
Width = MinWidth,
Height = MinHeight
},
MaxCroppingSize =
{
Width = MaxWidth,
Height = MaxHeight
},
CropGranularityX = GranularityW,
CropGranularityY = GranularityH,
CropAlignX = 0,
CropAlignY = 0
};
caps.MinOutputSize.Width = caps.MinCroppingSize.Width;
caps.MinOutputSize.Height = caps.MinCroppingSize.Height;
caps.MaxOutputSize.Width = caps.MaxCroppingSize.Width;
caps.MaxOutputSize.Height = caps.MaxCroppingSize.Height;
caps.OutputGranularityX = caps.CropGranularityX;
caps.OutputGranularityY = caps.CropGranularityY;
caps.StretchTapsX = 0;
caps.StretchTapsY = 0;
caps.ShrinkTapsX = 0;
caps.ShrinkTapsY = 0;
caps.MinFrameInterval = UNITS / MaxFps;
caps.MaxFrameInterval = UNITS / MinFps;
caps.MinBitsPerSecond = (caps.MinOutputSize.Width * caps.MinOutputSize.Height * _bitCount) * MinFps;
caps.MaxBitsPerSecond = (caps.MaxOutputSize.Width * caps.MaxOutputSize.Height * _bitCount) * MaxFps;
return NOERROR;
}