CODEWITHSUNDEEP
c++windowswinapiwasapi
MieszkoPasierbek
MieszkoPasierbek

Reputation: 29

Difference between two IAudioClient::Initialize return values

I'm having trouble understanding the documentation for the IAudioClient::Initialize() function.

It's about the different return values E_INVALIDARG and AUDCLNT_E_UNSUPPORTED_FORMAT.

The E_INVALIDARG description says:

Parameter pFormat points to an invalid format description.

However, in the description for AUDCLNT_E_UNSUPPORTED_FORMAT:

The audio engine (shared mode) or audio endpoint device (exclusive mode) does not support the specified format.

What does it mean in E_INVALIDARG that the description format is "invalid"? I guess it's not that it doesn't fit the device, since that's already handled by AUDCLNT_E_UNSUPPORTED_FORMAT?

And, it's also not that it is pFormat == NULL, since that's already handled by E_POINTER.

So, what specific cases is pFormat incorrectness covered by E_INVALIDARG?

Upvotes: 0

Views: 98

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