Hi Tim, DebugView information is from our SysFx. However, the request for the input format is coming from the DTM test infrastructure. Did not realize that I was getting invalid inFormat.dwValidBitsPerSample: 32 relative to the FormatTag. This information is directly from DebugView and so yes this information is contradictory to the format tag. db dnandy@xxxxxxxxx ________________________________ From: Tim Roberts <timr@xxxxxxxxx> To: wdmaudiodev@xxxxxxxxxxxxx Sent: Monday, April 6, 2009 12:53:19 PM Subject: [wdmaudiodev] Re: SysFx DTM failure: - ValidateDefaultAPOFormat Documentation Dibyendu Nandy wrote: Hello, I am trying to debug a DTM failure for a capture SysFx. The SysFx works as expected in normal operation and functionally error-free. It is only failing in DTM testing. The DTM log indicates the following, after stripping out the SysFx algorithms and leaving just the SysFx APO framework in place. Task Result Status Process Exit Status Start Time End Time Failed -2147220479 4/6/2009 10:22:27 AM 4/6/2009 10:23:22 AM Pass Fail Not Run Not Applicable 0 1 0 0 # Message Time Source Machine Name 1 4/6/2009 11:22:43 AM Execution Agent TEST_VISTA32 -2147220479 is 0x80040401, but I don't see any reasonable definitions that apply here. My question is why does ValidateDefaultAPOFormat fail on this requested format and how should this case be handled. Any input or a pointer to documentation about ValidateDefaultAPOFormat would be much appreciated. Extract from DebugView log: 000002961.84247351[1644] LFX | IsInputFormatSupported() Call 000002971.84253693[1644] LFX | ValidateDefaultAPOFormat hrInput 1 00000298 1.84258723[1644] LFX | ---------------- REQUESTED FORMAT ---------------- 000002991.84262025[1644] LFX | inFormat.dwSamplesPerFrame: 2 000003001.84267926[1644] LFX | inFormat.dwBytesPerSampleContainer: 4 000003011.84272802[1644] LFX | inFormat.dwValidBitsPerSample: 32 000003021.84278846[1644] LFX | inFormat.fFramesPerSecond: 48000.000000 000003031.84283817[1644] LFX | inFormat.dwChannelMask: 0 000003041.84293592[1644] LFX | FormatTag: 1 000003051.84300983[1644] LFX | ---------------- CaptureWI ---------------- 000003061.84309876[1644] LFX | m_CaptureWI.WF.Format.wFormatTag: 1 000003071.84314847[1644] LFX | m_CaptureWI.WF.Format.nChannels: 2 00000308 1.84320951[1644] LFX | m_CaptureWI.WF.Format.nSamplesPerSec: 48000 000003091.84325910[1644] LFX | m_CaptureWI.WF.Format.nAvgBytesPerSec: 192000 000003101.84331095[1644] LFX | m_CaptureWI.WF.Format.nBlockAlign: 4 000003111.84336054[1644] LFX | m_CaptureWI.WF.Format.wBitsPerSample: 16 000003121.84341133[1644] LFX | m_CaptureWI.WF.Format.cbSize: 0 000003131.84346080[1644] LFX | m_CaptureWI.WF.Samples.wValidBitsPerSample: 32 000003141.84354424[1644] LFX | m_CaptureWI.WF.dwChannelMask: 3 000003151.84359348[1644] LFX | m_CaptureWI.SamplesPerFrame: 480 This format information is a bit schizophrenic. The WAVEFORMATEX information seems to imply PCM 16-bit stereo at 48kHz, which would have nBlockAlign==4, but in that case wValidBitsPerSample cannot be 32. It must be 16. Is this information that your SYSFX is echoing? -- Tim Roberts, timr@xxxxxxxxx Providenza & Boekelheide, Inc.