Microsoft Speech Platform

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ISpAudio::SetBufferInfo

ISpAudio::SetBufferInfo sets the audio stream buffer information.

HRESULT SetBufferInfo(
   const SPAUDIOBUFFERINFO  *pBuffInfo
);

Parameters

pBuffInfo

[in] Pointer to the SPAUDIOBUFFERINFO buffer providing the requested settings.

Return values

Value	Description
S_OK	Function completed successfully.
SPERR_UNINITIALIZED	Audio stream not initialized.
E_INVALIDARG	pBuffInfo is invalid or the parameters do not meet the criteria described above.
SPERR_DEVICE_BUSY	Audio device is not in the SPAS_CLOSED state.
FAILED(hr)	Appropriate error message.

Remarks

This method can be called only when the audio device is in the SPAS_CLOSED state. The SPAUDIOBUFFERINFO members must conform to the following restrictions:

SPAudioBufferInfo.ulMsMinNotification cannot be larger than one quarter the size of SPAudioBufferInfo.ulMsBufferSize and must not be zero.

SPAudioBufferInfo.ulMsEventBias cannot be larger than SPAudioBufferInfo.ulMsBufferSize.

SPAudioBufferInfo.ulMsBufferSize must be greater than or equal to 200 milliseconds.