first fo all I'm sorry caurse i'm not good at english

I had make sound filter dirver

and inject to "Media Class" to Upper

Just I want that chang the PCM data to speaker

but, the driver wasn't work sometimes

i intercept IOCTL_KS_WRITE_STREAM

but directsound play doesn't make IOCTL_KS_WRITE_STREAM

the driver was work with some sound card , doesn't work with another sound
card

sound chip waveout dsound

Sigmatel work work
Realtek work X
c-media work X

how can i intercept directsound buffer with Realtek and c-media sound card?