IAMVideoCompression::get_Quality
| Microsoft DirectShow 9.0 |
IAMVideoCompression::get_Quality
The get_Quality method retrieves the current compression quality.
Syntax
HRESULT get_Quality( double *pQuality );
Parameters
pQuality
[out] Pointer to a variable that receives the relative compression quality. The quality is expressed as a value between 0.0 and 1.0, where 1.0 indicates the best quality and 0.0 indicates the worst quality. If the value is negative, the filter will use the default quality.
Return Values
Returns an HRESULT value.
Remarks
The exact meaning of the quality setting depends on the filter.
To determine if the filter supports this method, call the IAMVideoCompression::GetInfo method and check for the CompressionCaps_CanQuality flag in the pCapabilities parameter. The GetInfo method also returns the default quality.
Requirements
Header: Declared in Strmif.h; include Dshow.h.
Library: Use Strmiids.lib.
See Also