Enabling APOs in Sysvad driver

For the past few weeks i have been working with SYSVAD sample driver.

And i have gone through the codes. It is not a real driver that works with the actual hardware it is a virtual driver. So it can't play the actual playback audio and the actual audio recording from the microphone. When the output of the SYSVAD speaker is captured we notice a sine wave. Actually the SYSVAD is generating a sine wave and the audio which actually played will taken from the loopback, and saving the audio with the name STREAM. I have been trying to enable the Swap APO by modifying the code and by changing the registry values for the Swap APO, still I can't able to see swap between the left and right audio.

Thanks in advance.

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