[wdmaudiodev] LFX APO on Windows 7 x64
- From: Artem <smirnoff.artem@xxxxxxxxx>
- To: wdmaudiodev@xxxxxxxxxxxxx
- Date: Tue, 10 Dec 2019 11:02:42 +0300
Hi!
I have an APO (that does some sound virtualization stuff) in LFX on
Windows 7 x64 and on some machines windows continuously calls this
(for stereo source):
->VirtualAPO()
->Initialize()
->IsInputFormatSupported()
Input format:
guidFormatType: 3
dwSamplesPerFrame: 2
dwBytesPerSampleContainer: 4
dwValidBitsPerSample: 32
fFramesPerSecond: 48000
dwChannelMask: 3
Output format:
guidFormatType: 3
dwSamplesPerFrame: 2
dwBytesPerSampleContainer: 4
dwValidBitsPerSample: 32
fFramesPerSecond: 48000
dwChannelMask: 3
->~VirtualAPO()
This repeats many times and format seems to be the same. Once I saw
something like (not sure what 85 means):
Input format:
guidFormatType: 85
dwSamplesPerFrame: 2
dwBytesPerSampleContainer: 0
dwValidBitsPerSample: 0
fFramesPerSecond: 44100
I have implemented IsInputFormatSupported() and it basically accepts
all input channel configurations and then calls base class, but
skipped implementation of IsOutputFormatSupported().
Everything works perfectly on Windows 10 and some Windows 7 PCs, but
on some Windows 7 PCs I see the behavior described above. I can't see
the difference between OSs,
all updates are there and build numbers are the same.
Please advice something, I've already cracked my head :) I know that
Windows 7 is going away, but we have requirements to support it.
regards,
Artem
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