How can I differentiate streams in an SFX Audio Processing Object

Question

I have been developing an SFX APO to process individual audio streams from applications. Does the API provide a way to tell where the audio is coming from so that I can treat streams from different processes/applications differently?

Answer 1

Some information about the audio stream is available in the APOInitSystemEffect2 structure passed to IAudioProcessingObject::Initialize; see https://docs.microsoft.com/en-us/windows/win32/api/audioenginebaseapo/ns-audioenginebaseapo-apoinitsystemeffects2

A good peer-to-peer resource for audio driver questions is the wdmaudiodev email list https://www.freelists.org/list/wdmaudiodev

If you need more information about the application than is provided by APOInitSystemEffects, please share the scenario you are trying to enable, so we can consider that when designing future versions of Windows.

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Matthew van Eerde

Answer 2

Hi Eyebrowsoffire, I'm in the same situation.Did you figure out?