Hi,
I am planning to write a kernel streaming filter that implements an equalizer filter. The filter can only process PCM wave data and is inserted between KMixer.sys and portcls.sys within WDM audio filter graph.Therefore, all sorts of sound format, such as PCM wave data, Redbook from CD audio and midi, can be added EQ effects.This seems to the GFX filter in winXP DDK.
I don’t know how to insert a KS filter into the proper position of the wdm audio filter graph. Can you give me some help?
Thanks and regards,
Yuhong