DirectSoundFullDuplexCreate8
HRESULT DirectSoundFullDuplexCreate8(
LPCGUID pcGuidCaptureDevice,
LPCGUID pcGuidRenderDevice,
LPCDSCBUFFERDESC pcDSCBufferDesc,
LPCDSBUFFERDESC pcDSBufferDesc,
HWND hWnd,
DWORD dwLevel,
LPDIRECTSOUNDFULLDUPLEX * ppDSFD,
LPDIRECTSOUNDCAPTUREBUFFER8 * ppDSCBuffer8,
LPDIRECTSOUNDBUFFER8 * ppDSBuffer8,
LPUNKNOWN pUnkOuter
)
Parameters
- pcGuidCaptureDevice
-
Address of the GUID that identifies the sound capture device. The value of this parameter must be one of the GUIDs returned by DirectSoundCaptureEnumerate, or NULL for the default device, or one of the following values.
Value Description DSDEVID_DefaultCapture System-wide default audio capture device. DSDEVID_DefaultVoiceCapture Default voice capture device. - pcGuidRenderDevice
-
Address of the GUID that identifies the sound render device for full-duplex output. Must be one of the GUIDs returned by DirectSoundEnumerate, or NULL for the default render device, or one of the following values.
Value Description DSDEVID_DefaultPlayback System-wide default audio playback device. DSDEVID_DefaultVoicePlayback Default voice playback device. - pcDSCBufferDesc
- Address of a DSCBUFFERDESC structure that specifies the characteristics of the capture buffer.
- pcDSBufferDesc
- Address of a DSCBUFFERDESC structure that specifies the characteristics of the render buffer.
- hWnd
- Handle to the application window.
- dwLevel
- Cooperative level for the device. For more information, see IDirectSound8::SetCooperativeLevel.
- ppDSFD
- Address of a variable that receives the IDirectSoundFullDuplex8 interface pointer.
- ppDSCBuffer8
- Address of a variable that receives the IDirectSoundCaptureBuffer8 interface of the capture buffer.
- ppDSBuffer8
- Address of a variable that receives the IDirectSoundBuffer8 interface of the render buffer.
- pUnkOuter
- Address of the controlling object's IUnknown interface for COM aggregation. Must be NULL, because aggregation is not supported.
Return Value
If the function succeeds, it returns DS_OK. If it fails, the return value may be one of the following.
| Return Code |
|---|
| DSERR_ALLOCATED |
| DSERR_INVALIDPARAM |
| DSERR_NOAGGREGATION |
| DSERR_NODRIVER |
| DSERR_OUTOFMEMORY |
Windows |
|---|
Important Note for Windows Vista Existing applications that access Windows XP Acoustic Echo Cancellation (AEC) features via the DirectSound API will no longer obtain AEC when running on Windows Vista. These applications will still run, but their calls to AEC-specific DirectSound API calls will have no effect on the captured audio. To learn how to obtain AEC in Windows Vista, See the Windows Vista AEC topics in the Windows SDK. |
Windows