IWMResamplerProps::SetUserChannelMtx
Specifies the channel matrix.
Syntax
HRESULT SetUserChannelMtx(ChMtxType*userChannelMtx);
Parameters
userChannelMtx
[in] Pointer to an array of floating-point values that represents a channel conversion matrix.
Return Values
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
Return code | Description |
S_OK | The method succeeded. |
Remarks
This method is equivalent to setting the MFPKEY_WMRESAMP_CHANNELMTX property, except that the matrix is represented differently:
- Values are floating point.
- The matrix is transposed.
To convert from the integer values given in the MFPKEY_WMRESAMP_CHANNELMTX property to floating-point values, use the following formula:
(float)pow(10.0,((double)Coeff)/(65536.0*20.0))
where Coeff is an integer coefficient.
Requirements
Client: Requires Windows Vista or Windows XP.
Header: Include wmcodecdsp.h.
See Also